annotate src/regex.c @ 814:a634e3b7acc8

[xemacs-hg @ 2002-04-14 12:41:59 by ben] latest changes TODO.ben-mule-21-5: Update. make-docfile.c: Add basic support for handling ISO 2022 doc strings -- we parse the basic charset designation sequences so we know whether we're in ASCII and have to pay attention to end quotes and such. Reformat code according to coding standards. abbrev.el: Add `global-abbrev-mode', which turns on or off abbrev-mode in all buffers. Added `defining-abbrev-turns-on-abbrev-mode' -- if non-nil, defining an abbrev through an interactive function will automatically turn on abbrev-mode, either globally or locally depending on the command. This is the "what you'd expect" behavior. indent.el: general function for indenting a balanced expression in a mode-correct way. Works similar to indent-region in that a mode can specify a specific command to do the whole operation; if not, figure out the region using forward-sexp and indent each line using indent-according-to-mode. keydefs.el: Removed. Modify M-C-backslash to do indent-region-or-balanced-expression. Make S-Tab just insert a TAB char, like it's meant to do. make-docfile.el: Now that we're using the call-process-in-lisp, we need to load an extra file win32-native.el because we're running a bare temacs. menubar-items.el: Totally redo the Cmds menu so that most used commands appear directly on the menu and less used commands appear in submenus. The old way may have been very pretty, but rather impractical. process.el: Under Windows, don't ever use old-call-process-internal, even in batch mode. We can do processes in batch mode. subr.el: Someone recoded truncate-string-to-width, saying "the FSF version is too complicated and does lots of hard-to-understand stuff" but the resulting recoded version was *totally* wrong! it misunderstood the basic point of this function, which is work in *columns* not chars. i dumped ours and copied the version from FSF 21.1. Also added truncate-string-with-continuation-dots, since this idiom is used often. config.inc.samp, xemacs.mak: Separate out debug and optimize flags. Remove all vestiges of USE_MINIMAL_TAGBITS, USE_INDEXED_LRECORD_IMPLEMENTATION, and GUNG_HO, since those ifdefs have long been removed. Make error-checking support actually work. Some rearrangement of config.inc.samp to make it more logical. Remove callproc.c and ntproc.c from xemacs.mak, no longer used. Make pdump the default. lisp.h: Add support for strong type-checking of Bytecount, Bytebpos, Charcount, Charbpos, and others, by making them classes, overloading the operators to provide integer-like operation and carefully controlling what operations are allowed. Not currently enabled in C++ builds because there are still a number of compile errors, and it won't really work till we merge in my "8-bit-Mule" workspace, in which I make use of the new types Charxpos, Bytexpos, Memxpos, representing a "position" either in a buffer or a string. (This is especially important in the extent code.) abbrev.c, alloc.c, eval.c, buffer.c, buffer.h, editfns.c, fns.c, text.h: Warning fixes, some of them related to new C++ strict type checking of Bytecount, Charbpos, etc. dired.c: Caught an actual error due to strong type checking -- char len being passed when should be byte len. alloc.c, backtrace.h, bytecode.c, bytecode.h, eval.c, sysdep.c: Further optimize Ffuncall: -- process arg list at compiled-function creation time, converting into an array for extra-quick access at funcall time. -- rewrite funcall_compiled_function to use it, and inline this function. -- change the order of check for magic stuff in SPECBIND_FAST_UNSAFE to be faster. -- move the check for need to garbage collect into the allocation code, so only a single flag needs to be checked in funcall. buffer.c, symbols.c: add debug funs to check on mule optimization info in buffers and strings. eval.c, emacs.c, text.c, regex.c, scrollbar-msw.c, search.c: Fix evil crashes due to eistrings not properly reinitialized under pdump. Redo a bit some of the init routines; convert some complex_vars_of() into simple vars_of(), because they didn't need complex processing. callproc.c, emacs.c, event-stream.c, nt.c, process.c, process.h, sysdep.c, sysdep.h, syssignal.h, syswindows.h, ntproc.c: Delete. Hallelujah, praise the Lord, there is no god but Allah!!! fix so that processes can be invoked in bare temacs -- thereby eliminating any need for callproc.c. (currently only eliminated under NT.) remove all crufty and unnecessary old process code in ntproc.c and elsewhere. move non-callproc-specific stuff (mostly environment) into process.c, so callproc.c can be left out under NT. console-tty.c, doc.c, file-coding.c, file-coding.h, lstream.c, lstream.h: fix doc string handling so it works with Japanese, etc docs. change handling of "character mode" so callers don't have to manually set it (quite error-prone). event-msw.c: spacing fixes. lread.c: eliminate unused crufty vintage-19 "FSF defun hack" code. lrecord.h: improve pdump description docs. buffer.c, ntheap.c, unexnt.c, win32.c, emacs.c: Mule-ize some unexec and startup code. It was pseudo-Mule-ized before by simply always calling the ...A versions of functions, but that won't cut it -- eventually we want to be able to run properly even if XEmacs has been installed in a Japanese directory. (The current problem is the timing of the loading of the Unicode tables; this will eventually be fixed.) Go through and fix various other places where the code was not Mule-clean. Provide a function mswindows_get_module_file_name() to get our own name without resort to PATH_MAX and such. Add a big comment in main() about the problem with Unicode table load timing that I just alluded to. emacs.c: When error-checking is enabled (interpreted as "user is developing XEmacs"), don't ask user to "pause to read messages" when a fatal error has occurred, because it will wedge if we are in an inner modal loop (typically when a menu is popped up) and make us unable to get a useful stack trace in the debugger. text.c: Correct update_entirely_ascii_p_flag to actually work. lisp.h, symsinit.h: declarations for above changes.
author ben
date Sun, 14 Apr 2002 12:43:31 +0000
parents a5954632b187
children 6728e641994e
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1 /* Extended regular expression matching and search library,
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2 version 0.12, extended for XEmacs.
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3 (Implements POSIX draft P10003.2/D11.2, except for
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4 internationalization features.)
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5
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6 Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
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7 Copyright (C) 1995 Sun Microsystems, Inc.
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8 Copyright (C) 1995, 2001, 2002 Ben Wing.
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9
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10 This program is free software; you can redistribute it and/or modify
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11 it under the terms of the GNU General Public License as published by
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12 the Free Software Foundation; either version 2, or (at your option)
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13 any later version.
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14
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15 This program is distributed in the hope that it will be useful,
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16 but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 GNU General Public License for more details.
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19
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20 You should have received a copy of the GNU General Public License
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21 along with this program; see the file COPYING. If not, write to
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22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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23 Boston, MA 02111-1307, USA. */
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24
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25 /* Synched up with: FSF 19.29. */
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26
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27 /* Changes made for XEmacs:
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28
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29 (1) the REGEX_BEGLINE_CHECK code from the XEmacs v18 regex routines
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30 was added. This causes a huge speedup in font-locking.
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31 (2) Rel-alloc is disabled when the MMAP version of rel-alloc is
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32 being used, because it's too slow -- all those calls to mmap()
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33 add humongous overhead.
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34 (3) Lots and lots of changes for Mule. They are bracketed by
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35 `#ifdef MULE' or with comments that have `XEmacs' in them.
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36 */
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37
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38 #ifdef HAVE_CONFIG_H
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39 #include <config.h>
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40 #endif
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41
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42 #ifndef REGISTER /* Rigidly enforced as of 20.3 */
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43 #define REGISTER
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44 #endif
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45
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46 #ifndef _GNU_SOURCE
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47 #define _GNU_SOURCE 1
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48 #endif
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49
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50 #ifdef emacs
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51 /* Converts the pointer to the char to BEG-based offset from the start. */
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52 #define PTR_TO_OFFSET(d) (MATCHING_IN_FIRST_STRING \
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53 ? (d) - string1 : (d) - (string2 - size1))
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54 #else
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55 #define PTR_TO_OFFSET(d) 0
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56 #endif
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57
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58 /* We assume non-Mule if emacs isn't defined. */
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59 #ifndef emacs
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60 #undef MULE
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61 #endif
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62
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63 /* We need this for `regex.h', and perhaps for the Emacs include files. */
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64 #include <sys/types.h>
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65 #include <stddef.h> /* needed for ptrdiff_t under Solaris */
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67 /* This is for other GNU distributions with internationalized messages. */
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68 #if defined (I18N3) && (defined (HAVE_LIBINTL_H) || defined (_LIBC))
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69 # include <libintl.h>
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70 #else
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71 # define gettext(msgid) (msgid)
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72 #endif
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73
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74 /* XEmacs addition */
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75 #ifdef REL_ALLOC
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76 #define REGEX_REL_ALLOC /* may be undefined below */
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77 #endif
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78
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79 /* XEmacs: define this to add in a speedup for patterns anchored at
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80 the beginning of a line. Keep the ifdefs so that it's easier to
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81 tell where/why this code has diverged from v19. */
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82 #define REGEX_BEGLINE_CHECK
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83
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84 /* XEmacs: the current mmap-based ralloc handles small blocks very
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85 poorly, so we disable it here. */
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86
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87 #if defined (HAVE_MMAP) || defined (DOUG_LEA_MALLOC)
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88 # undef REGEX_REL_ALLOC
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89 #endif
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90
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91 /* The `emacs' switch turns on certain matching commands
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92 that make sense only in Emacs. */
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93 #ifdef emacs
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94
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95 #include "lisp.h"
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96 #include "buffer.h"
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97 #include "syntax.h"
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98
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99 #if (defined (DEBUG_XEMACS) && !defined (DEBUG))
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100 #define DEBUG
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101 #endif
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102
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103 #ifdef MULE
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104
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105 Lisp_Object Vthe_lisp_rangetab;
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106
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107 void
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108 vars_of_regex (void)
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109 {
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110 Vthe_lisp_rangetab = Fmake_range_table ();
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111 staticpro (&Vthe_lisp_rangetab);
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112 }
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113
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114 #else /* not MULE */
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115
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116 void
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117 vars_of_regex (void)
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118 {
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119 }
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120
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121 #endif /* MULE */
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122
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123 #define RE_TRANSLATE(ch) TRT_TABLE_OF (translate, (Emchar) ch)
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124 #define TRANSLATE_P(tr) (!NILP (tr))
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125
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126 #else /* not emacs */
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127
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128 /* If we are not linking with Emacs proper,
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129 we can't use the relocating allocator
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130 even if config.h says that we can. */
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131 #undef REGEX_REL_ALLOC
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133 /* defined in lisp.h */
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134 #ifdef REGEX_MALLOC
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135 #ifndef DECLARE_NOTHING
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136 #define DECLARE_NOTHING struct nosuchstruct
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137 #endif
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138 #endif
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139
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140 #include <stdlib.h>
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141
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142 #define charptr_emchar(str) ((Emchar) (str)[0])
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143
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144 #if (LONGBITS > INTBITS)
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145 # define EMACS_INT long
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146 #else
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147 # define EMACS_INT int
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148 #endif
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149
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150 typedef int Emchar;
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151
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152 #define INC_CHARPTR(p) ((p)++)
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153 #define DEC_CHARPTR(p) ((p)--)
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154
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155 #include <string.h>
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156
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157 /* Define the syntax stuff for \<, \>, etc. */
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158
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159 /* This must be nonzero for the wordchar and notwordchar pattern
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160 commands in re_match_2. */
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161 #ifndef Sword
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162 #define Sword 1
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163 #endif
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164
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165 #ifdef SYNTAX_TABLE
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166
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167 extern char *re_syntax_table;
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168
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169 #else /* not SYNTAX_TABLE */
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170
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171 /* How many characters in the character set. */
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172 #define CHAR_SET_SIZE 256
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173
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174 static char re_syntax_table[CHAR_SET_SIZE];
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175
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176 static void
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177 init_syntax_once (void)
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178 {
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179 static int done = 0;
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180
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181 if (!done)
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182 {
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183 const char *word_syntax_chars =
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184 "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
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185
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186 memset (re_syntax_table, 0, sizeof (re_syntax_table));
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187
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188 while (*word_syntax_chars)
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189 re_syntax_table[(unsigned int) (*word_syntax_chars++)] = Sword;
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190
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191 done = 1;
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192 }
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193 }
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194
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195 #endif /* SYNTAX_TABLE */
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196
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197 #define SYNTAX_UNSAFE(ignored, c) re_syntax_table[c]
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198 #undef SYNTAX_FROM_CACHE
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199 #define SYNTAX_FROM_CACHE SYNTAX_UNSAFE
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200
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201 #define RE_TRANSLATE(c) translate[(unsigned char) (c)]
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202 #define TRANSLATE_P(tr) tr
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203
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204 #endif /* emacs */
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205
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206 /* Under XEmacs, this is needed because we don't define it elsewhere. */
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207 #ifdef SWITCH_ENUM_BUG
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208 #define SWITCH_ENUM_CAST(x) ((int)(x))
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209 #else
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210 #define SWITCH_ENUM_CAST(x) (x)
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211 #endif
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212
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213
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214 /* Get the interface, including the syntax bits. */
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215 #include "regex.h"
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216
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217 /* isalpha etc. are used for the character classes. */
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218 #include <ctype.h>
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219
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220 /* Jim Meyering writes:
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221
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222 "... Some ctype macros are valid only for character codes that
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223 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
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224 using /bin/cc or gcc but without giving an ansi option). So, all
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225 ctype uses should be through macros like ISPRINT... If
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226 STDC_HEADERS is defined, then autoconf has verified that the ctype
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227 macros don't need to be guarded with references to isascii. ...
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228 Defining isascii to 1 should let any compiler worth its salt
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229 eliminate the && through constant folding." */
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230
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231 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
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232 #define ISASCII_1(c) 1
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233 #else
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234 #define ISASCII_1(c) isascii(c)
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235 #endif
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236
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237 #ifdef MULE
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238 /* The IS*() macros can be passed any character, including an extended
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239 one. We need to make sure there are no crashes, which would occur
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240 otherwise due to out-of-bounds array references. */
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241 #define ISASCII(c) (((EMACS_UINT) (c)) < 0x100 && ISASCII_1 (c))
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242 #else
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243 #define ISASCII(c) ISASCII_1 (c)
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244 #endif /* MULE */
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245
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246 #ifdef isblank
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247 #define ISBLANK(c) (ISASCII (c) && isblank (c))
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248 #else
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249 #define ISBLANK(c) ((c) == ' ' || (c) == '\t')
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250 #endif
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251 #ifdef isgraph
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252 #define ISGRAPH(c) (ISASCII (c) && isgraph (c))
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253 #else
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254 #define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c))
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255 #endif
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256
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257 #define ISPRINT(c) (ISASCII (c) && isprint (c))
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258 #define ISDIGIT(c) (ISASCII (c) && isdigit (c))
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259 #define ISALNUM(c) (ISASCII (c) && isalnum (c))
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260 #define ISALPHA(c) (ISASCII (c) && isalpha (c))
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261 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
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262 #define ISLOWER(c) (ISASCII (c) && islower (c))
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263 #define ISPUNCT(c) (ISASCII (c) && ispunct (c))
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264 #define ISSPACE(c) (ISASCII (c) && isspace (c))
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265 #define ISUPPER(c) (ISASCII (c) && isupper (c))
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266 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
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267
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268 #ifndef NULL
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269 #define NULL (void *)0
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270 #endif
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271
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272 /* We remove any previous definition of `SIGN_EXTEND_CHAR',
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273 since ours (we hope) works properly with all combinations of
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274 machines, compilers, `char' and `unsigned char' argument types.
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275 (Per Bothner suggested the basic approach.) */
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276 #undef SIGN_EXTEND_CHAR
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277 #if __STDC__
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278 #define SIGN_EXTEND_CHAR(c) ((signed char) (c))
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279 #else /* not __STDC__ */
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280 /* As in Harbison and Steele. */
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281 #define SIGN_EXTEND_CHAR(c) ((((unsigned char) (c)) ^ 128) - 128)
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282 #endif
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283
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284 /* Should we use malloc or alloca? If REGEX_MALLOC is not defined, we
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285 use `alloca' instead of `malloc'. This is because using malloc in
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286 re_search* or re_match* could cause memory leaks when C-g is used in
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287 Emacs; also, malloc is slower and causes storage fragmentation. On
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288 the other hand, malloc is more portable, and easier to debug.
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289
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290 Because we sometimes use alloca, some routines have to be macros,
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291 not functions -- `alloca'-allocated space disappears at the end of the
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292 function it is called in. */
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293
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294 #ifdef REGEX_MALLOC
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295
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296 #define REGEX_ALLOCATE malloc
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297 #define REGEX_REALLOCATE(source, osize, nsize) realloc (source, nsize)
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298 #define REGEX_FREE free
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299
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300 #else /* not REGEX_MALLOC */
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301
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302 /* Emacs already defines alloca, sometimes. */
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303 #ifndef alloca
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304
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305 /* Make alloca work the best possible way. */
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306 #ifdef __GNUC__
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307 #define alloca __builtin_alloca
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308 #elif defined (__DECC) /* XEmacs: added next 3 lines, similar to config.h.in */
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309 #include <alloca.h>
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310 #pragma intrinsic(alloca)
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311 #else /* not __GNUC__ */
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312 #if HAVE_ALLOCA_H
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313 #include <alloca.h>
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314 #else /* not __GNUC__ or HAVE_ALLOCA_H */
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315 #ifndef _AIX /* Already did AIX, up at the top. */
444
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diff changeset
316 void *alloca ();
428
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317 #endif /* not _AIX */
446
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parents: 444
diff changeset
318 #endif /* HAVE_ALLOCA_H */
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diff changeset
319 #endif /* __GNUC__ */
428
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320
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321 #endif /* not alloca */
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322
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323 #define REGEX_ALLOCATE alloca
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cvs
parents:
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324
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
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325 /* Assumes a `char *destination' variable. */
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cvs
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326 #define REGEX_REALLOCATE(source, osize, nsize) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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327 (destination = (char *) alloca (nsize), \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
328 memmove (destination, source, osize), \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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329 destination)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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330
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
331 /* No need to do anything to free, after alloca. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
332 #define REGEX_FREE(arg) ((void)0) /* Do nothing! But inhibit gcc warning. */
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cvs
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333
446
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diff changeset
334 #endif /* REGEX_MALLOC */
428
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cvs
parents:
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335
3ecd8885ac67 Import from CVS: tag r21-2-22
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336 /* Define how to allocate the failure stack. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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337
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diff changeset
338 #ifdef REGEX_REL_ALLOC
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
339 #define REGEX_ALLOCATE_STACK(size) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
340 r_alloc ((char **) &failure_stack_ptr, (size))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
341 #define REGEX_REALLOCATE_STACK(source, osize, nsize) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
342 r_re_alloc ((char **) &failure_stack_ptr, (nsize))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
343 #define REGEX_FREE_STACK(ptr) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
344 r_alloc_free ((void **) &failure_stack_ptr)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
345
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943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
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parents: 665
diff changeset
346 #else /* not REGEX_REL_ALLOC */
428
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cvs
parents:
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347
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
348 #ifdef REGEX_MALLOC
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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349
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
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350 #define REGEX_ALLOCATE_STACK malloc
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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351 #define REGEX_REALLOCATE_STACK(source, osize, nsize) realloc (source, nsize)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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352 #define REGEX_FREE_STACK free
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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353
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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354 #else /* not REGEX_MALLOC */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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355
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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356 #define REGEX_ALLOCATE_STACK alloca
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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357
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
358 #define REGEX_REALLOCATE_STACK(source, osize, nsize) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
359 REGEX_REALLOCATE (source, osize, nsize)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
360 /* No need to explicitly free anything. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
361 #define REGEX_FREE_STACK(arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
362
446
1ccc32a20af4 Import from CVS: tag r21-2-38
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parents: 444
diff changeset
363 #endif /* REGEX_MALLOC */
771
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parents: 665
diff changeset
364 #endif /* REGEX_REL_ALLOC */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
365
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
366
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
367 /* True if `size1' is non-NULL and PTR is pointing anywhere inside
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
368 `string1' or just past its end. This works if PTR is NULL, which is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
369 a good thing. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
370 #define FIRST_STRING_P(ptr) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
371 (size1 && string1 <= (ptr) && (ptr) <= string1 + size1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
372
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
373 /* (Re)Allocate N items of type T using malloc, or fail. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
374 #define TALLOC(n, t) ((t *) malloc ((n) * sizeof (t)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
375 #define RETALLOC(addr, n, t) ((addr) = (t *) realloc (addr, (n) * sizeof (t)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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376 #define REGEX_TALLOC(n, t) ((t *) REGEX_ALLOCATE ((n) * sizeof (t)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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377
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
378 #define BYTEWIDTH 8 /* In bits. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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379
434
9d177e8d4150 Import from CVS: tag r21-2-25
cvs
parents: 428
diff changeset
380 #define STREQ(s1, s2) (strcmp (s1, s2) == 0)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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381
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
382 #undef MAX
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
383 #undef MIN
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
384 #define MAX(a, b) ((a) > (b) ? (a) : (b))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
385 #define MIN(a, b) ((a) < (b) ? (a) : (b))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
386
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
387 /* Type of source-pattern and string chars. */
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
388 typedef const unsigned char re_char;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
389
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
390 typedef char re_bool;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
391 #define false 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
392 #define true 1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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393
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
394
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
395 /* These are the command codes that appear in compiled regular
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
396 expressions. Some opcodes are followed by argument bytes. A
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
397 command code can specify any interpretation whatsoever for its
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
398 arguments. Zero bytes may appear in the compiled regular expression. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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399
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
400 typedef enum
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
401 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
402 no_op = 0,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
403
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
404 /* Succeed right away--no more backtracking. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
405 succeed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
406
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
407 /* Followed by one byte giving n, then by n literal bytes. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
408 exactn,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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409
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
410 /* Matches any (more or less) character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
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411 anychar,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
412
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
413 /* Matches any one char belonging to specified set. First
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
414 following byte is number of bitmap bytes. Then come bytes
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
415 for a bitmap saying which chars are in. Bits in each byte
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
416 are ordered low-bit-first. A character is in the set if its
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
417 bit is 1. A character too large to have a bit in the map is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
418 automatically not in the set. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
419 charset,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
420
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
421 /* Same parameters as charset, but match any character that is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
422 not one of those specified. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
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diff changeset
423 charset_not,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
424
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
425 /* Start remembering the text that is matched, for storing in a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
426 register. Followed by one byte with the register number, in
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
427 the range 1 to the pattern buffer's re_ngroups
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
428 field. Then followed by one byte with the number of groups
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
429 inner to this one. (This last has to be part of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
430 start_memory only because we need it in the on_failure_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
431 of re_match_2.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
432 start_memory,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
433
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
434 /* Stop remembering the text that is matched and store it in a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
435 memory register. Followed by one byte with the register
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
436 number, in the range 1 to `re_ngroups' in the
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
437 pattern buffer, and one byte with the number of inner groups,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
438 just like `start_memory'. (We need the number of inner
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
439 groups here because we don't have any easy way of finding the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
440 corresponding start_memory when we're at a stop_memory.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
441 stop_memory,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
442
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
443 /* Match a duplicate of something remembered. Followed by one
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
444 byte containing the register number. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
445 duplicate,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
446
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
447 /* Fail unless at beginning of line. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
448 begline,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
449
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
450 /* Fail unless at end of line. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
451 endline,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
452
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
453 /* Succeeds if at beginning of buffer (if emacs) or at beginning
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
454 of string to be matched (if not). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
455 begbuf,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
456
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
457 /* Analogously, for end of buffer/string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
458 endbuf,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
459
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
460 /* Followed by two byte relative address to which to jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
461 jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
462
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
463 /* Same as jump, but marks the end of an alternative. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
464 jump_past_alt,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
465
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
466 /* Followed by two-byte relative address of place to resume at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
467 in case of failure. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
468 on_failure_jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
469
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
470 /* Like on_failure_jump, but pushes a placeholder instead of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
471 current string position when executed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
472 on_failure_keep_string_jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
473
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
474 /* Throw away latest failure point and then jump to following
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
475 two-byte relative address. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
476 pop_failure_jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
477
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
478 /* Change to pop_failure_jump if know won't have to backtrack to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
479 match; otherwise change to jump. This is used to jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
480 back to the beginning of a repeat. If what follows this jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
481 clearly won't match what the repeat does, such that we can be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
482 sure that there is no use backtracking out of repetitions
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
483 already matched, then we change it to a pop_failure_jump.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
484 Followed by two-byte address. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
485 maybe_pop_jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
486
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
487 /* Jump to following two-byte address, and push a dummy failure
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
488 point. This failure point will be thrown away if an attempt
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
489 is made to use it for a failure. A `+' construct makes this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
490 before the first repeat. Also used as an intermediary kind
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
491 of jump when compiling an alternative. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
492 dummy_failure_jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
493
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
494 /* Push a dummy failure point and continue. Used at the end of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
495 alternatives. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
496 push_dummy_failure,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
497
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
498 /* Followed by two-byte relative address and two-byte number n.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
499 After matching N times, jump to the address upon failure. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
500 succeed_n,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
501
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
502 /* Followed by two-byte relative address, and two-byte number n.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
503 Jump to the address N times, then fail. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
504 jump_n,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
505
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
506 /* Set the following two-byte relative address to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
507 subsequent two-byte number. The address *includes* the two
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
508 bytes of number. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
509 set_number_at,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
510
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
511 wordchar, /* Matches any word-constituent character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
512 notwordchar, /* Matches any char that is not a word-constituent. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
513
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
514 wordbeg, /* Succeeds if at word beginning. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
515 wordend, /* Succeeds if at word end. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
516
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
517 wordbound, /* Succeeds if at a word boundary. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
518 notwordbound /* Succeeds if not at a word boundary. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
519
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
520 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
521 ,before_dot, /* Succeeds if before point. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
522 at_dot, /* Succeeds if at point. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
523 after_dot, /* Succeeds if after point. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
524
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
525 /* Matches any character whose syntax is specified. Followed by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
526 a byte which contains a syntax code, e.g., Sword. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
527 syntaxspec,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
528
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
529 /* Matches any character whose syntax is not that specified. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
530 notsyntaxspec
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
531
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
532 #endif /* emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
533
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
534 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
535 /* need extra stuff to be able to properly work with XEmacs/Mule
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
536 characters (which may take up more than one byte) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
537
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
538 ,charset_mule, /* Matches any character belonging to specified set.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
539 The set is stored in "unified range-table
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
540 format"; see rangetab.c. Unlike the `charset'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
541 opcode, this can handle arbitrary characters. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
542
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
543 charset_mule_not /* Same parameters as charset_mule, but match any
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
544 character that is not one of those specified. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
545
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
546 /* 97/2/17 jhod: The following two were merged back in from the Mule
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
547 2.3 code to enable some language specific processing */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
548 ,categoryspec, /* Matches entries in the character category tables */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
549 notcategoryspec /* The opposite of the above */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
550 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
551
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
552 } re_opcode_t;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
553
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
554 /* Common operations on the compiled pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
555
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
556 /* Store NUMBER in two contiguous bytes starting at DESTINATION. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
557
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
558 #define STORE_NUMBER(destination, number) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
559 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
560 (destination)[0] = (number) & 0377; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
561 (destination)[1] = (number) >> 8; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
562 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
563
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
564 /* Same as STORE_NUMBER, except increment DESTINATION to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
565 the byte after where the number is stored. Therefore, DESTINATION
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
566 must be an lvalue. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
567
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
568 #define STORE_NUMBER_AND_INCR(destination, number) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
569 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
570 STORE_NUMBER (destination, number); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
571 (destination) += 2; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
572 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
573
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
574 /* Put into DESTINATION a number stored in two contiguous bytes starting
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
575 at SOURCE. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
576
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
577 #define EXTRACT_NUMBER(destination, source) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
578 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
579 (destination) = *(source) & 0377; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
580 (destination) += SIGN_EXTEND_CHAR (*((source) + 1)) << 8; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
581 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
582
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
583 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
584 static void
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
585 extract_number (int *dest, re_char *source)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
586 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
587 int temp = SIGN_EXTEND_CHAR (*(source + 1));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
588 *dest = *source & 0377;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
589 *dest += temp << 8;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
590 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
591
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
592 #ifndef EXTRACT_MACROS /* To debug the macros. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
593 #undef EXTRACT_NUMBER
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
594 #define EXTRACT_NUMBER(dest, src) extract_number (&dest, src)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
595 #endif /* not EXTRACT_MACROS */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
596
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
597 #endif /* DEBUG */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
598
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
599 /* Same as EXTRACT_NUMBER, except increment SOURCE to after the number.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
600 SOURCE must be an lvalue. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
601
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
602 #define EXTRACT_NUMBER_AND_INCR(destination, source) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
603 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
604 EXTRACT_NUMBER (destination, source); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
605 (source) += 2; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
606 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
607
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
608 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
609 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
610 extract_number_and_incr (int *destination, unsigned char **source)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
611 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
612 extract_number (destination, *source);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
613 *source += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
614 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
615
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
616 #ifndef EXTRACT_MACROS
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
617 #undef EXTRACT_NUMBER_AND_INCR
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
618 #define EXTRACT_NUMBER_AND_INCR(dest, src) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
619 extract_number_and_incr (&dest, &src)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
620 #endif /* not EXTRACT_MACROS */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
621
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
622 #endif /* DEBUG */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
623
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
624 /* If DEBUG is defined, Regex prints many voluminous messages about what
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
625 it is doing (if the variable `debug' is nonzero). If linked with the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
626 main program in `iregex.c', you can enter patterns and strings
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
627 interactively. And if linked with the main program in `main.c' and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
628 the other test files, you can run the already-written tests. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
629
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
630 #if defined (DEBUG)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
631
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
632 /* We use standard I/O for debugging. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
633 #include <stdio.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
634
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
635 #ifndef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
636 /* XEmacs provides its own version of assert() */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
637 /* It is useful to test things that ``must'' be true when debugging. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
638 #include <assert.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
639 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
640
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
641 static int debug = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
642
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
643 #define DEBUG_STATEMENT(e) e
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
644 #define DEBUG_PRINT1(x) if (debug) printf (x)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
645 #define DEBUG_PRINT2(x1, x2) if (debug) printf (x1, x2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
646 #define DEBUG_PRINT3(x1, x2, x3) if (debug) printf (x1, x2, x3)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
647 #define DEBUG_PRINT4(x1, x2, x3, x4) if (debug) printf (x1, x2, x3, x4)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
648 #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
649 if (debug) print_partial_compiled_pattern (s, e)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
650 #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
651 if (debug) print_double_string (w, s1, sz1, s2, sz2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
652
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
653
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
654 /* Print the fastmap in human-readable form. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
655
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
656 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
657 print_fastmap (char *fastmap)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
658 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
659 int was_a_range = 0;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
660 int i = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
661
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
662 while (i < (1 << BYTEWIDTH))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
663 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
664 if (fastmap[i++])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
665 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
666 was_a_range = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
667 putchar (i - 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
668 while (i < (1 << BYTEWIDTH) && fastmap[i])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
669 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
670 was_a_range = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
671 i++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
672 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
673 if (was_a_range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
674 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
675 putchar ('-');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
676 putchar (i - 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
677 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
678 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
679 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
680 putchar ('\n');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
681 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
682
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
683
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
684 /* Print a compiled pattern string in human-readable form, starting at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
685 the START pointer into it and ending just before the pointer END. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
686
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
687 static void
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
688 print_partial_compiled_pattern (re_char *start, re_char *end)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
689 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
690 int mcnt, mcnt2;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
691 unsigned char *p = (unsigned char *) start;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
692 re_char *pend = end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
693
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
694 if (start == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
695 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
696 puts ("(null)");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
697 return;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
698 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
699
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
700 /* Loop over pattern commands. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
701 while (p < pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
702 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
703 printf ("%ld:\t", (long)(p - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
704
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
705 switch ((re_opcode_t) *p++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
706 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
707 case no_op:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
708 printf ("/no_op");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
709 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
710
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
711 case exactn:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
712 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
713 printf ("/exactn/%d", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
714 do
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
715 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
716 putchar ('/');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
717 putchar (*p++);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
718 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
719 while (--mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
720 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
721
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
722 case start_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
723 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
724 printf ("/start_memory/%d/%d", mcnt, *p++);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
725 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
726
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
727 case stop_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
728 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
729 printf ("/stop_memory/%d/%d", mcnt, *p++);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
730 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
731
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
732 case duplicate:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
733 printf ("/duplicate/%d", *p++);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
734 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
735
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
736 case anychar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
737 printf ("/anychar");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
738 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
739
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
740 case charset:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
741 case charset_not:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
742 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
743 REGISTER int c, last = -100;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
744 REGISTER int in_range = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
745
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
746 printf ("/charset [%s",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
747 (re_opcode_t) *(p - 1) == charset_not ? "^" : "");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
748
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
749 assert (p + *p < pend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
750
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
751 for (c = 0; c < 256; c++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
752 if (((unsigned char) (c / 8) < *p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
753 && (p[1 + (c/8)] & (1 << (c % 8))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
754 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
755 /* Are we starting a range? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
756 if (last + 1 == c && ! in_range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
757 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
758 putchar ('-');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
759 in_range = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
760 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
761 /* Have we broken a range? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
762 else if (last + 1 != c && in_range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
763 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
764 putchar (last);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
765 in_range = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
766 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
767
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
768 if (! in_range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
769 putchar (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
770
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
771 last = c;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
772 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
773
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
774 if (in_range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
775 putchar (last);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
776
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
777 putchar (']');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
778
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
779 p += 1 + *p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
780 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
781 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
782
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
783 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
784 case charset_mule:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
785 case charset_mule_not:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
786 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
787 int nentries, i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
788
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
789 printf ("/charset_mule [%s",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
790 (re_opcode_t) *(p - 1) == charset_mule_not ? "^" : "");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
791 nentries = unified_range_table_nentries (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
792 for (i = 0; i < nentries; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
793 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
794 EMACS_INT first, last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
795 Lisp_Object dummy_val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
796
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
797 unified_range_table_get_range (p, i, &first, &last,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
798 &dummy_val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
799 if (first < 0x100)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
800 putchar (first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
801 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
802 printf ("(0x%lx)", (long)first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
803 if (first != last)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
804 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
805 putchar ('-');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
806 if (last < 0x100)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
807 putchar (last);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
808 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
809 printf ("(0x%lx)", (long)last);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
810 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
811 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
812 putchar (']');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
813 p += unified_range_table_bytes_used (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
814 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
815 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
816 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
817
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
818 case begline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
819 printf ("/begline");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
820 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
821
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
822 case endline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
823 printf ("/endline");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
824 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
825
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
826 case on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
827 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
828 printf ("/on_failure_jump to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
829 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
830
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
831 case on_failure_keep_string_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
832 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
833 printf ("/on_failure_keep_string_jump to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
834 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
835
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
836 case dummy_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
837 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
838 printf ("/dummy_failure_jump to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
839 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
840
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
841 case push_dummy_failure:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
842 printf ("/push_dummy_failure");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
843 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
844
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
845 case maybe_pop_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
846 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
847 printf ("/maybe_pop_jump to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
848 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
849
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
850 case pop_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
851 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
852 printf ("/pop_failure_jump to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
853 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
854
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
855 case jump_past_alt:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
856 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
857 printf ("/jump_past_alt to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
858 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
859
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
860 case jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
861 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
862 printf ("/jump to %ld", (long)(p + mcnt - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
863 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
864
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
865 case succeed_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
866 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
867 extract_number_and_incr (&mcnt2, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
868 printf ("/succeed_n to %ld, %d times", (long)(p + mcnt - start), mcnt2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
869 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
870
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
871 case jump_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
872 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
873 extract_number_and_incr (&mcnt2, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
874 printf ("/jump_n to %ld, %d times", (long)(p + mcnt - start), mcnt2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
875 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
876
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
877 case set_number_at:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
878 extract_number_and_incr (&mcnt, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
879 extract_number_and_incr (&mcnt2, &p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
880 printf ("/set_number_at location %ld to %d", (long)(p + mcnt - start), mcnt2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
881 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
882
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
883 case wordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
884 printf ("/wordbound");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
885 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
886
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
887 case notwordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
888 printf ("/notwordbound");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
889 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
890
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
891 case wordbeg:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
892 printf ("/wordbeg");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
893 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
894
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
895 case wordend:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
896 printf ("/wordend");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
897
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
898 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
899 case before_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
900 printf ("/before_dot");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
901 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
902
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
903 case at_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
904 printf ("/at_dot");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
905 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
906
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
907 case after_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
908 printf ("/after_dot");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
909 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
910
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
911 case syntaxspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
912 printf ("/syntaxspec");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
913 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
914 printf ("/%d", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
915 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
916
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
917 case notsyntaxspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
918 printf ("/notsyntaxspec");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
919 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
920 printf ("/%d", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
921 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
922
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
923 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
924 /* 97/2/17 jhod Mule category patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
925 case categoryspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
926 printf ("/categoryspec");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
927 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
928 printf ("/%d", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
929 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
930
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
931 case notcategoryspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
932 printf ("/notcategoryspec");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
933 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
934 printf ("/%d", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
935 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
936 /* end of category patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
937 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
938 #endif /* emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
939
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
940 case wordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
941 printf ("/wordchar");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
942 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
943
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
944 case notwordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
945 printf ("/notwordchar");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
946 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
947
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
948 case begbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
949 printf ("/begbuf");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
950 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
951
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
952 case endbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
953 printf ("/endbuf");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
954 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
955
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
956 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
957 printf ("?%d", *(p-1));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
958 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
959
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
960 putchar ('\n');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
961 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
962
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
963 printf ("%ld:\tend of pattern.\n", (long)(p - start));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
964 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
965
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
966
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
967 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
968 print_compiled_pattern (struct re_pattern_buffer *bufp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
969 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
970 re_char *buffer = bufp->buffer;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
971
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
972 print_partial_compiled_pattern (buffer, buffer + bufp->used);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
973 printf ("%ld bytes used/%ld bytes allocated.\n", bufp->used,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
974 bufp->allocated);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
975
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
976 if (bufp->fastmap_accurate && bufp->fastmap)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
977 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
978 printf ("fastmap: ");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
979 print_fastmap (bufp->fastmap);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
980 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
981
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
982 printf ("re_nsub: %ld\t", (long)bufp->re_nsub);
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
983 printf ("re_ngroups: %ld\t", (long)bufp->re_ngroups);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
984 printf ("regs_alloc: %d\t", bufp->regs_allocated);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
985 printf ("can_be_null: %d\t", bufp->can_be_null);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
986 printf ("newline_anchor: %d\n", bufp->newline_anchor);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
987 printf ("no_sub: %d\t", bufp->no_sub);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
988 printf ("not_bol: %d\t", bufp->not_bol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
989 printf ("not_eol: %d\t", bufp->not_eol);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
990 printf ("syntax: %d\n", bufp->syntax);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
991 /* Perhaps we should print the translate table? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
992 /* and maybe the category table? */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
993
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
994 if (bufp->external_to_internal_register)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
995 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
996 int i;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
997
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
998 printf ("external_to_internal_register:\n");
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
999 for (i = 0; i <= bufp->re_nsub; i++)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1000 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1001 if (i > 0)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1002 printf (", ");
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1003 printf ("%d -> %d", i, bufp->external_to_internal_register[i]);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1004 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1005 printf ("\n");
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1006 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1007 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1008
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1009
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1010 static void
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1011 print_double_string (re_char *where, re_char *string1, int size1,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1012 re_char *string2, int size2)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1013 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1014 if (where == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1015 printf ("(null)");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1016 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1017 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1018 int this_char;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1019
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1020 if (FIRST_STRING_P (where))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1021 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1022 for (this_char = where - string1; this_char < size1; this_char++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1023 putchar (string1[this_char]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1024
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1025 where = string2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1026 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1027
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1028 for (this_char = where - string2; this_char < size2; this_char++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1029 putchar (string2[this_char]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1030 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1031 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1032
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1033 #else /* not DEBUG */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1034
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1035 #ifndef emacs
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1036 #undef assert
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1037 #define assert(e) ((void) (1))
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1038 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1039
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1040 #define DEBUG_STATEMENT(e)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1041 #define DEBUG_PRINT1(x)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1042 #define DEBUG_PRINT2(x1, x2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1043 #define DEBUG_PRINT3(x1, x2, x3)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1044 #define DEBUG_PRINT4(x1, x2, x3, x4)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1045 #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1046 #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1047
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1048 #endif /* DEBUG */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1049
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1050 /* Set by `re_set_syntax' to the current regexp syntax to recognize. Can
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1051 also be assigned to arbitrarily: each pattern buffer stores its own
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1052 syntax, so it can be changed between regex compilations. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1053 /* This has no initializer because initialized variables in Emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1054 become read-only after dumping. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1055 reg_syntax_t re_syntax_options;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1056
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1057
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1058 /* Specify the precise syntax of regexps for compilation. This provides
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1059 for compatibility for various utilities which historically have
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1060 different, incompatible syntaxes.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1061
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1062 The argument SYNTAX is a bit mask comprised of the various bits
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1063 defined in regex.h. We return the old syntax. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1064
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1065 reg_syntax_t
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1066 re_set_syntax (reg_syntax_t syntax)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1067 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1068 reg_syntax_t ret = re_syntax_options;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1069
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1070 re_syntax_options = syntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1071 return ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1072 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1073
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1074 /* This table gives an error message for each of the error codes listed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1075 in regex.h. Obviously the order here has to be same as there.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1076 POSIX doesn't require that we do anything for REG_NOERROR,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1077 but why not be nice? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1078
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1079 static const char *re_error_msgid[] =
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1080 {
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1081 "Success", /* REG_NOERROR */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1082 "No match", /* REG_NOMATCH */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1083 "Invalid regular expression", /* REG_BADPAT */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1084 "Invalid collation character", /* REG_ECOLLATE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1085 "Invalid character class name", /* REG_ECTYPE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1086 "Trailing backslash", /* REG_EESCAPE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1087 "Invalid back reference", /* REG_ESUBREG */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1088 "Unmatched [ or [^", /* REG_EBRACK */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1089 "Unmatched ( or \\(", /* REG_EPAREN */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1090 "Unmatched \\{", /* REG_EBRACE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1091 "Invalid content of \\{\\}", /* REG_BADBR */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1092 "Invalid range end", /* REG_ERANGE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1093 "Memory exhausted", /* REG_ESPACE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1094 "Invalid preceding regular expression", /* REG_BADRPT */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1095 "Premature end of regular expression", /* REG_EEND */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1096 "Regular expression too big", /* REG_ESIZE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1097 "Unmatched ) or \\)", /* REG_ERPAREN */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1098 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1099 "Invalid syntax designator", /* REG_ESYNTAX */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1100 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1101 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1102 "Ranges may not span charsets", /* REG_ERANGESPAN */
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cvs
parents:
diff changeset
1103 "Invalid category designator", /* REG_ECATEGORY */
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parents:
diff changeset
1104 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1105 };
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
1106
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1107 /* Avoiding alloca during matching, to placate r_alloc. */
3ecd8885ac67 Import from CVS: tag r21-2-22
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diff changeset
1108
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1109 /* Define MATCH_MAY_ALLOCATE unless we need to make sure that the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1110 searching and matching functions should not call alloca. On some
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1111 systems, alloca is implemented in terms of malloc, and if we're
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1112 using the relocating allocator routines, then malloc could cause a
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1113 relocation, which might (if the strings being searched are in the
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1114 ralloc heap) shift the data out from underneath the regexp
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1115 routines. [To clarify: The purpose of rel-alloc is to allow data to
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1116 be moved in memory from one place to another so that all data
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1117 blocks can be consolidated together and excess memory released back
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1118 to the operating system. This requires that all the blocks that
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1119 are managed by rel-alloc go at the very end of the program's heap,
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1120 after all regularly malloc()ed data. malloc(), however, is used to
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1121 owning the end of the heap, so that when more memory is needed, it
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1122 just expands the heap using sbrk(). This is reconciled by using a
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1123 malloc() (such as malloc.c, gmalloc.c, or recent versions of
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1124 malloc() in libc) where the sbrk() call can be replaced with a
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1125 user-specified call -- in this case, to rel-alloc's r_alloc_sbrk()
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1126 routine. This routine calls the real sbrk(), but then shifts all
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1127 the rel-alloc-managed blocks forward to the end of the heap again,
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1128 so that malloc() gets the memory it needs in the location it needs
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1129 it at. The regex routines may well have pointers to buffer data as
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1130 their arguments, and buffers are managed by rel-alloc if rel-alloc
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1131 has been enabled, so calling malloc() may potentially screw things
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1132 up badly if it runs out of space and asks for more from the OS.]
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1133
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1134 [[Here's another reason to avoid allocation: Emacs processes input
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1135 from X in a signal handler; processing X input may call malloc; if
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1136 input arrives while a matching routine is calling malloc, then
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1137 we're scrod. But Emacs can't just block input while calling
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1138 matching routines; then we don't notice interrupts when they come
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1139 in. So, Emacs blocks input around all regexp calls except the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1140 matching calls, which it leaves unprotected, in the faith that they
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1141 will not malloc.]] This previous paragraph is irrelevant.
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1142
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1143 XEmacs: We *do not* do anything so stupid as process input from
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1144 within a signal handler. However, the regexp routines may get
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1145 called reentrantly as a result of QUIT processing (e.g. under
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1146 Windows: re_match -> QUIT -> quit_p -> drain events -> process
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1147 WM_INITMENU -> call filter -> re_match), so we cannot have any
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1148 global variables (unless we do lots of trickiness including some
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1149 unwind-protects, which isn't worth it at this point). The first
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1150 paragraph appears utterly garbled to me -- shouldn't *ANY* use of
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1151 rel-alloc to different potentially cause buffer data to be
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1152 relocated? I must be missing something, though -- perhaps the
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1153 writer above is assuming that the failure stack(s) will always be
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1154 allocated after the buffer data, and thus reallocating them with
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1155 rel-alloc won't move buffer data. --ben */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1156
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1157 /* Normally, this is fine. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1158 #define MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1159
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1160 /* When using GNU C, we are not REALLY using the C alloca, no matter
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1161 what config.h may say. So don't take precautions for it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1162 #ifdef __GNUC__
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1163 #undef C_ALLOCA
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cvs
parents:
diff changeset
1164 #endif
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parents:
diff changeset
1165
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1166 /* The match routines may not allocate if (1) they would do it with malloc
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1167 and (2) it's not safe for them to use malloc.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1168 Note that if REL_ALLOC is defined, matching would not use malloc for the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1169 failure stack, but we would still use it for the register vectors;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1170 so REL_ALLOC should not affect this. */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1171
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1172 /* XEmacs change emacs -> REL_ALLOC */
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1173 #if (defined (C_ALLOCA) || defined (REGEX_MALLOC)) && defined (REL_ALLOC)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
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parents:
diff changeset
1174 #undef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1175 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1176
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1177 /* #### need better check */
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1178
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1179 #if !defined (MATCH_MAY_ALLOCATE) && defined (emacs) && defined (HAVE_MS_WINDOWS)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1180 #error regex must be handle reentrancy; MATCH_MAY_ALLOCATE must be defined
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1181 #endif
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1182
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1183
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1184 /* Failure stack declarations and macros; both re_compile_fastmap and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1185 re_match_2 use a failure stack. These have to be macros because of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1186 REGEX_ALLOCATE_STACK. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1187
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1188
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1189 /* Number of failure points for which to initially allocate space
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1190 when matching. If this number is exceeded, we allocate more
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1191 space, so it is not a hard limit. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1192 #ifndef INIT_FAILURE_ALLOC
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1193 #define INIT_FAILURE_ALLOC 5
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1194 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1195
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1196 /* Roughly the maximum number of failure points on the stack. Would be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1197 exactly that if always used MAX_FAILURE_SPACE each time we failed.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1198 This is a variable only so users of regex can assign to it; we never
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1199 change it ourselves. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1200 #if defined (MATCH_MAY_ALLOCATE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1201 /* 4400 was enough to cause a crash on Alpha OSF/1,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1202 whose default stack limit is 2mb. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1203 int re_max_failures = 20000;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1204 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1205 int re_max_failures = 2000;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1206 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1207
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1208 union fail_stack_elt
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1209 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1210 re_char *pointer;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1211 int integer;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1212 };
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1213
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1214 typedef union fail_stack_elt fail_stack_elt_t;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1215
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1216 typedef struct
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1217 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1218 fail_stack_elt_t *stack;
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
1219 Elemcount size;
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
1220 Elemcount avail; /* Offset of next open position. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1221 } fail_stack_type;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1222
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1223 #define FAIL_STACK_EMPTY() (fail_stack.avail == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1224 #define FAIL_STACK_PTR_EMPTY() (fail_stack_ptr->avail == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1225 #define FAIL_STACK_FULL() (fail_stack.avail == fail_stack.size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1226
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1227
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1228 /* Define macros to initialize and free the failure stack.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1229 Do `return -2' if the alloc fails. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1230
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1231 #ifdef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1232 #define INIT_FAIL_STACK() \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1233 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1234 fail_stack.stack = (fail_stack_elt_t *) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1235 REGEX_ALLOCATE_STACK (INIT_FAILURE_ALLOC * sizeof (fail_stack_elt_t)); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1236 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1237 if (fail_stack.stack == NULL) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1238 return -2; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1239 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1240 fail_stack.size = INIT_FAILURE_ALLOC; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1241 fail_stack.avail = 0; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1242 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1243
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1244 #define RESET_FAIL_STACK() REGEX_FREE_STACK (fail_stack.stack)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1245 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1246 #define INIT_FAIL_STACK() \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1247 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1248 fail_stack.avail = 0; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1249 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1250
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1251 #define RESET_FAIL_STACK()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1252 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1253
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1254
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1255 /* Double the size of FAIL_STACK, up to approximately `re_max_failures' items.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1256
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1257 Return 1 if succeeds, and 0 if either ran out of memory
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1258 allocating space for it or it was already too large.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1259
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1260 REGEX_REALLOCATE_STACK requires `destination' be declared. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1261
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1262 #define DOUBLE_FAIL_STACK(fail_stack) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1263 ((fail_stack).size > re_max_failures * MAX_FAILURE_ITEMS \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1264 ? 0 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1265 : ((fail_stack).stack = (fail_stack_elt_t *) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1266 REGEX_REALLOCATE_STACK ((fail_stack).stack, \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1267 (fail_stack).size * sizeof (fail_stack_elt_t), \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1268 ((fail_stack).size << 1) * sizeof (fail_stack_elt_t)), \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1269 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1270 (fail_stack).stack == NULL \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1271 ? 0 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1272 : ((fail_stack).size <<= 1, \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1273 1)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1274
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1275
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1276 /* Push pointer POINTER on FAIL_STACK.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1277 Return 1 if was able to do so and 0 if ran out of memory allocating
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1278 space to do so. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1279 #define PUSH_PATTERN_OP(POINTER, FAIL_STACK) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1280 ((FAIL_STACK_FULL () \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1281 && !DOUBLE_FAIL_STACK (FAIL_STACK)) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1282 ? 0 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1283 : ((FAIL_STACK).stack[(FAIL_STACK).avail++].pointer = POINTER, \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1284 1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1285
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1286 /* Push a pointer value onto the failure stack.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1287 Assumes the variable `fail_stack'. Probably should only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1288 be called from within `PUSH_FAILURE_POINT'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1289 #define PUSH_FAILURE_POINTER(item) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1290 fail_stack.stack[fail_stack.avail++].pointer = (unsigned char *) (item)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1291
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1292 /* This pushes an integer-valued item onto the failure stack.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1293 Assumes the variable `fail_stack'. Probably should only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1294 be called from within `PUSH_FAILURE_POINT'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1295 #define PUSH_FAILURE_INT(item) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1296 fail_stack.stack[fail_stack.avail++].integer = (item)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1297
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1298 /* Push a fail_stack_elt_t value onto the failure stack.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1299 Assumes the variable `fail_stack'. Probably should only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1300 be called from within `PUSH_FAILURE_POINT'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1301 #define PUSH_FAILURE_ELT(item) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1302 fail_stack.stack[fail_stack.avail++] = (item)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1303
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1304 /* These three POP... operations complement the three PUSH... operations.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1305 All assume that `fail_stack' is nonempty. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1306 #define POP_FAILURE_POINTER() fail_stack.stack[--fail_stack.avail].pointer
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1307 #define POP_FAILURE_INT() fail_stack.stack[--fail_stack.avail].integer
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1308 #define POP_FAILURE_ELT() fail_stack.stack[--fail_stack.avail]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1309
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1310 /* Used to omit pushing failure point id's when we're not debugging. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1311 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1312 #define DEBUG_PUSH PUSH_FAILURE_INT
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1313 #define DEBUG_POP(item_addr) *(item_addr) = POP_FAILURE_INT ()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1314 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1315 #define DEBUG_PUSH(item)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1316 #define DEBUG_POP(item_addr)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1317 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1318
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1319
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1320 /* Push the information about the state we will need
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1321 if we ever fail back to it.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1322
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1323 Requires variables fail_stack, regstart, regend, reg_info, and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1324 num_regs be declared. DOUBLE_FAIL_STACK requires `destination' be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1325 declared.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1326
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1327 Does `return FAILURE_CODE' if runs out of memory. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1328
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
1329 #if !defined (REGEX_MALLOC) && !defined (REGEX_REL_ALLOC)
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1330 #define DECLARE_DESTINATION char *destination
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1331 #else
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1332 #define DECLARE_DESTINATION DECLARE_NOTHING
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1333 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1334
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1335 #define PUSH_FAILURE_POINT(pattern_place, string_place, failure_code) \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1336 do { \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1337 DECLARE_DESTINATION; \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1338 /* Must be int, so when we don't save any registers, the arithmetic \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1339 of 0 + -1 isn't done as unsigned. */ \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1340 int this_reg; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1341 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1342 DEBUG_STATEMENT (failure_id++); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1343 DEBUG_STATEMENT (nfailure_points_pushed++); \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1344 DEBUG_PRINT2 ("\nPUSH_FAILURE_POINT #%d:\n", failure_id); \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1345 DEBUG_PRINT2 (" Before push, next avail: %ld\n", \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1346 (long) (fail_stack).avail); \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1347 DEBUG_PRINT2 (" size: %ld\n", \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1348 (long) (fail_stack).size); \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1349 \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1350 DEBUG_PRINT2 (" slots needed: %d\n", NUM_FAILURE_ITEMS); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1351 DEBUG_PRINT2 (" available: %ld\n", \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1352 (long) REMAINING_AVAIL_SLOTS); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1353 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1354 /* Ensure we have enough space allocated for what we will push. */ \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1355 while (REMAINING_AVAIL_SLOTS < NUM_FAILURE_ITEMS) \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1356 { \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1357 if (!DOUBLE_FAIL_STACK (fail_stack)) \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1358 return failure_code; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1359 \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1360 DEBUG_PRINT2 ("\n Doubled stack; size now: %ld\n", \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1361 (long) (fail_stack).size); \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1362 DEBUG_PRINT2 (" slots available: %ld\n", \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1363 (long) REMAINING_AVAIL_SLOTS); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1364 } \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1365 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1366 /* Push the info, starting with the registers. */ \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1367 DEBUG_PRINT1 ("\n"); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1368 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1369 for (this_reg = lowest_active_reg; this_reg <= highest_active_reg; \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1370 this_reg++) \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1371 { \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1372 DEBUG_PRINT2 (" Pushing reg: %d\n", this_reg); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1373 DEBUG_STATEMENT (num_regs_pushed++); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1374 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1375 DEBUG_PRINT2 (" start: 0x%lx\n", (long) regstart[this_reg]); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1376 PUSH_FAILURE_POINTER (regstart[this_reg]); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1377 \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1378 DEBUG_PRINT2 (" end: 0x%lx\n", (long) regend[this_reg]); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1379 PUSH_FAILURE_POINTER (regend[this_reg]); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1380 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1381 DEBUG_PRINT2 (" info: 0x%lx\n ", \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1382 * (long *) (&reg_info[this_reg])); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1383 DEBUG_PRINT2 (" match_null=%d", \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1384 REG_MATCH_NULL_STRING_P (reg_info[this_reg])); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1385 DEBUG_PRINT2 (" active=%d", IS_ACTIVE (reg_info[this_reg])); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1386 DEBUG_PRINT2 (" matched_something=%d", \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1387 MATCHED_SOMETHING (reg_info[this_reg])); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1388 DEBUG_PRINT2 (" ever_matched_something=%d", \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1389 EVER_MATCHED_SOMETHING (reg_info[this_reg])); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1390 DEBUG_PRINT1 ("\n"); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1391 PUSH_FAILURE_ELT (reg_info[this_reg].word); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1392 } \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1393 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1394 DEBUG_PRINT2 (" Pushing low active reg: %d\n", lowest_active_reg); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1395 PUSH_FAILURE_INT (lowest_active_reg); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1396 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1397 DEBUG_PRINT2 (" Pushing high active reg: %d\n", highest_active_reg); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1398 PUSH_FAILURE_INT (highest_active_reg); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1399 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1400 DEBUG_PRINT2 (" Pushing pattern 0x%lx: \n", (long) pattern_place); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1401 DEBUG_PRINT_COMPILED_PATTERN (bufp, pattern_place, pend); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1402 PUSH_FAILURE_POINTER (pattern_place); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1403 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1404 DEBUG_PRINT2 (" Pushing string 0x%lx: `", (long) string_place); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1405 DEBUG_PRINT_DOUBLE_STRING (string_place, string1, size1, string2, \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1406 size2); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1407 DEBUG_PRINT1 ("'\n"); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1408 PUSH_FAILURE_POINTER (string_place); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1409 \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1410 DEBUG_PRINT2 (" Pushing failure id: %u\n", failure_id); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1411 DEBUG_PUSH (failure_id); \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1412 } while (0)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1413
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1414 /* This is the number of items that are pushed and popped on the stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1415 for each register. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1416 #define NUM_REG_ITEMS 3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1417
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1418 /* Individual items aside from the registers. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1419 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1420 #define NUM_NONREG_ITEMS 5 /* Includes failure point id. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1421 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1422 #define NUM_NONREG_ITEMS 4
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1423 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1424
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1425 /* We push at most this many items on the stack. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1426 /* We used to use (num_regs - 1), which is the number of registers
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1427 this regexp will save; but that was changed to 5
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1428 to avoid stack overflow for a regexp with lots of parens. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1429 #define MAX_FAILURE_ITEMS (5 * NUM_REG_ITEMS + NUM_NONREG_ITEMS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1430
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1431 /* We actually push this many items. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1432 #define NUM_FAILURE_ITEMS \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1433 ((highest_active_reg - lowest_active_reg + 1) * NUM_REG_ITEMS \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1434 + NUM_NONREG_ITEMS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1435
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1436 /* How many items can still be added to the stack without overflowing it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1437 #define REMAINING_AVAIL_SLOTS ((fail_stack).size - (fail_stack).avail)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1438
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1439
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1440 /* Pops what PUSH_FAIL_STACK pushes.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1441
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1442 We restore into the parameters, all of which should be lvalues:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1443 STR -- the saved data position.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1444 PAT -- the saved pattern position.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1445 LOW_REG, HIGH_REG -- the highest and lowest active registers.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1446 REGSTART, REGEND -- arrays of string positions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1447 REG_INFO -- array of information about each subexpression.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1448
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1449 Also assumes the variables `fail_stack' and (if debugging), `bufp',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1450 `pend', `string1', `size1', `string2', and `size2'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1451
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1452 #define POP_FAILURE_POINT(str, pat, low_reg, high_reg, \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1453 regstart, regend, reg_info) \
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1454 do { \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1455 DEBUG_STATEMENT (fail_stack_elt_t ffailure_id;) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1456 int this_reg; \
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1457 const unsigned char *string_temp; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1458 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1459 assert (!FAIL_STACK_EMPTY ()); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1460 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1461 /* Remove failure points and point to how many regs pushed. */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1462 DEBUG_PRINT1 ("POP_FAILURE_POINT:\n"); \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1463 DEBUG_PRINT2 (" Before pop, next avail: %ld\n", \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1464 (long) fail_stack.avail); \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1465 DEBUG_PRINT2 (" size: %ld\n", \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1466 (long) fail_stack.size); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1467 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1468 assert (fail_stack.avail >= NUM_NONREG_ITEMS); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1469 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1470 DEBUG_POP (&ffailure_id.integer); \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1471 DEBUG_PRINT2 (" Popping failure id: %d\n", \
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1472 * (int *) &ffailure_id); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1473 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1474 /* If the saved string location is NULL, it came from an \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1475 on_failure_keep_string_jump opcode, and we want to throw away the \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1476 saved NULL, thus retaining our current position in the string. */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1477 string_temp = POP_FAILURE_POINTER (); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1478 if (string_temp != NULL) \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1479 str = string_temp; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1480 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1481 DEBUG_PRINT2 (" Popping string 0x%lx: `", (long) str); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1482 DEBUG_PRINT_DOUBLE_STRING (str, string1, size1, string2, size2); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1483 DEBUG_PRINT1 ("'\n"); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1484 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1485 pat = (unsigned char *) POP_FAILURE_POINTER (); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1486 DEBUG_PRINT2 (" Popping pattern 0x%lx: ", (long) pat); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1487 DEBUG_PRINT_COMPILED_PATTERN (bufp, pat, pend); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1488 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1489 /* Restore register info. */ \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1490 high_reg = POP_FAILURE_INT (); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1491 DEBUG_PRINT2 (" Popping high active reg: %d\n", high_reg); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1492 \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1493 low_reg = POP_FAILURE_INT (); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1494 DEBUG_PRINT2 (" Popping low active reg: %d\n", low_reg); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1495 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1496 for (this_reg = high_reg; this_reg >= low_reg; this_reg--) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1497 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1498 DEBUG_PRINT2 (" Popping reg: %d\n", this_reg); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1499 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1500 reg_info[this_reg].word = POP_FAILURE_ELT (); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1501 DEBUG_PRINT2 (" info: 0x%lx\n", \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1502 * (long *) &reg_info[this_reg]); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1503 \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1504 regend[this_reg] = POP_FAILURE_POINTER (); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1505 DEBUG_PRINT2 (" end: 0x%lx\n", (long) regend[this_reg]); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1506 \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1507 regstart[this_reg] = POP_FAILURE_POINTER (); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1508 DEBUG_PRINT2 (" start: 0x%lx\n", (long) regstart[this_reg]); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1509 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1510 \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1511 set_regs_matched_done = 0; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1512 DEBUG_STATEMENT (nfailure_points_popped++); \
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
1513 } while (0) /* POP_FAILURE_POINT */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1514
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1515
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1516
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1517 /* Structure for per-register (a.k.a. per-group) information.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1518 Other register information, such as the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1519 starting and ending positions (which are addresses), and the list of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1520 inner groups (which is a bits list) are maintained in separate
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1521 variables.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1522
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1523 We are making a (strictly speaking) nonportable assumption here: that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1524 the compiler will pack our bit fields into something that fits into
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1525 the type of `word', i.e., is something that fits into one item on the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1526 failure stack. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1527
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1528 typedef union
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1529 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1530 fail_stack_elt_t word;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1531 struct
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1532 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1533 /* This field is one if this group can match the empty string,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1534 zero if not. If not yet determined, `MATCH_NULL_UNSET_VALUE'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1535 #define MATCH_NULL_UNSET_VALUE 3
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1536 unsigned int match_null_string_p : 2;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1537 unsigned int is_active : 1;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1538 unsigned int matched_something : 1;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1539 unsigned int ever_matched_something : 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1540 } bits;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1541 } register_info_type;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1542
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1543 #define REG_MATCH_NULL_STRING_P(R) ((R).bits.match_null_string_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1544 #define IS_ACTIVE(R) ((R).bits.is_active)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1545 #define MATCHED_SOMETHING(R) ((R).bits.matched_something)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1546 #define EVER_MATCHED_SOMETHING(R) ((R).bits.ever_matched_something)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1547
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1548
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1549 /* Call this when have matched a real character; it sets `matched' flags
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1550 for the subexpressions which we are currently inside. Also records
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1551 that those subexprs have matched. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1552 #define SET_REGS_MATCHED() \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1553 do \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1554 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1555 if (!set_regs_matched_done) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1556 { \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1557 int r; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1558 set_regs_matched_done = 1; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1559 for (r = lowest_active_reg; r <= highest_active_reg; r++) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1560 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1561 MATCHED_SOMETHING (reg_info[r]) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1562 = EVER_MATCHED_SOMETHING (reg_info[r]) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1563 = 1; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1564 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1565 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1566 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1567 while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1568
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1569 /* Registers are set to a sentinel when they haven't yet matched. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1570 static unsigned char reg_unset_dummy;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1571 #define REG_UNSET_VALUE (&reg_unset_dummy)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1572 #define REG_UNSET(e) ((e) == REG_UNSET_VALUE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1573
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1574 /* Subroutine declarations and macros for regex_compile. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1575
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1576 /* Fetch the next character in the uncompiled pattern---translating it
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1577 if necessary. Also cast from a signed character in the constant
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1578 string passed to us by the user to an unsigned char that we can use
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1579 as an array index (in, e.g., `translate'). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1580 #define PATFETCH(c) \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1581 do { \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1582 PATFETCH_RAW (c); \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1583 c = TRANSLATE (c); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1584 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1585
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1586 /* Fetch the next character in the uncompiled pattern, with no
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1587 translation. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1588 #define PATFETCH_RAW(c) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1589 do {if (p == pend) return REG_EEND; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1590 assert (p < pend); \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1591 c = charptr_emchar (p); \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1592 INC_CHARPTR (p); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1593 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1594
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1595 /* Go backwards one character in the pattern. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1596 #define PATUNFETCH DEC_CHARPTR (p)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1597
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1598 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1599
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1600 #define PATFETCH_EXTENDED(emch) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1601 do {if (p == pend) return REG_EEND; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1602 assert (p < pend); \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
1603 emch = charptr_emchar ((const Intbyte *) p); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1604 INC_CHARPTR (p); \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1605 if (TRANSLATE_P (translate) && emch < 0x80) \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1606 emch = (Emchar) (unsigned char) RE_TRANSLATE (emch); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1607 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1608
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1609 #define PATFETCH_RAW_EXTENDED(emch) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1610 do {if (p == pend) return REG_EEND; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1611 assert (p < pend); \
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
1612 emch = charptr_emchar ((const Intbyte *) p); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1613 INC_CHARPTR (p); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1614 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1615
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1616 #define PATUNFETCH_EXTENDED DEC_CHARPTR (p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1617
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1618 #define PATFETCH_EITHER(emch) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1619 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1620 if (has_extended_chars) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1621 PATFETCH_EXTENDED (emch); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1622 else \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1623 PATFETCH (emch); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1624 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1625
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1626 #define PATFETCH_RAW_EITHER(emch) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1627 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1628 if (has_extended_chars) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1629 PATFETCH_RAW_EXTENDED (emch); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1630 else \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1631 PATFETCH_RAW (emch); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1632 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1633
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1634 #define PATUNFETCH_EITHER \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1635 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1636 if (has_extended_chars) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1637 PATUNFETCH_EXTENDED (emch); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1638 else \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1639 PATUNFETCH (emch); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1640 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1641
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1642 #else /* not MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1643
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1644 #define PATFETCH_EITHER(emch) PATFETCH (emch)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1645 #define PATFETCH_RAW_EITHER(emch) PATFETCH_RAW (emch)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1646 #define PATUNFETCH_EITHER PATUNFETCH
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1647
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1648 #endif /* MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1649
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1650 /* If `translate' is non-null, return translate[D], else just D. We
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1651 cast the subscript to translate because some data is declared as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1652 `char *', to avoid warnings when a string constant is passed. But
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1653 when we use a character as a subscript we must make it unsigned. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1654 #define TRANSLATE(d) (TRANSLATE_P (translate) ? RE_TRANSLATE (d) : (d))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1655
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1656 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1657
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1658 #define TRANSLATE_EXTENDED_UNSAFE(emch) \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1659 (TRANSLATE_P (translate) && emch < 0x80 ? RE_TRANSLATE (emch) : (emch))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1660
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1661 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1662
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1663 /* Macros for outputting the compiled pattern into `buffer'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1664
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1665 /* If the buffer isn't allocated when it comes in, use this. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1666 #define INIT_BUF_SIZE 32
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1667
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1668 /* Make sure we have at least N more bytes of space in buffer. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1669 #define GET_BUFFER_SPACE(n) \
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1670 while (buf_end - bufp->buffer + (n) > (ptrdiff_t) bufp->allocated) \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1671 EXTEND_BUFFER ()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1672
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1673 /* Make sure we have one more byte of buffer space and then add C to it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1674 #define BUF_PUSH(c) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1675 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1676 GET_BUFFER_SPACE (1); \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1677 *buf_end++ = (unsigned char) (c); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1678 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1679
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1680
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1681 /* Ensure we have two more bytes of buffer space and then append C1 and C2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1682 #define BUF_PUSH_2(c1, c2) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1683 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1684 GET_BUFFER_SPACE (2); \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1685 *buf_end++ = (unsigned char) (c1); \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1686 *buf_end++ = (unsigned char) (c2); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1687 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1688
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1689
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1690 /* As with BUF_PUSH_2, except for three bytes. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1691 #define BUF_PUSH_3(c1, c2, c3) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1692 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1693 GET_BUFFER_SPACE (3); \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1694 *buf_end++ = (unsigned char) (c1); \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1695 *buf_end++ = (unsigned char) (c2); \
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1696 *buf_end++ = (unsigned char) (c3); \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1697 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1698
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1699
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1700 /* Store a jump with opcode OP at LOC to location TO. We store a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1701 relative address offset by the three bytes the jump itself occupies. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1702 #define STORE_JUMP(op, loc, to) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1703 store_op1 (op, loc, (to) - (loc) - 3)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1704
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1705 /* Likewise, for a two-argument jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1706 #define STORE_JUMP2(op, loc, to, arg) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1707 store_op2 (op, loc, (to) - (loc) - 3, arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1708
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1709 /* Like `STORE_JUMP', but for inserting. Assume `buf_end' is the
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1710 buffer end. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1711 #define INSERT_JUMP(op, loc, to) \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1712 insert_op1 (op, loc, (to) - (loc) - 3, buf_end)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1713
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1714 /* Like `STORE_JUMP2', but for inserting. Assume `buf_end' is the
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1715 buffer end. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1716 #define INSERT_JUMP2(op, loc, to, arg) \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1717 insert_op2 (op, loc, (to) - (loc) - 3, arg, buf_end)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1718
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1719
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1720 /* This is not an arbitrary limit: the arguments which represent offsets
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1721 into the pattern are two bytes long. So if 2^16 bytes turns out to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1722 be too small, many things would have to change. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1723 #define MAX_BUF_SIZE (1L << 16)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1724
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1725
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1726 /* Extend the buffer by twice its current size via realloc and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1727 reset the pointers that pointed into the old block to point to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1728 correct places in the new one. If extending the buffer results in it
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1729 being larger than MAX_BUF_SIZE, then flag memory exhausted. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1730 #define EXTEND_BUFFER() \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1731 do { \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1732 re_char *old_buffer = bufp->buffer; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1733 if (bufp->allocated == MAX_BUF_SIZE) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1734 return REG_ESIZE; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1735 bufp->allocated <<= 1; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1736 if (bufp->allocated > MAX_BUF_SIZE) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1737 bufp->allocated = MAX_BUF_SIZE; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1738 bufp->buffer = (unsigned char *) realloc (bufp->buffer, bufp->allocated);\
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1739 if (bufp->buffer == NULL) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1740 return REG_ESPACE; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1741 /* If the buffer moved, move all the pointers into it. */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1742 if (old_buffer != bufp->buffer) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1743 { \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1744 buf_end = (buf_end - old_buffer) + bufp->buffer; \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1745 begalt = (begalt - old_buffer) + bufp->buffer; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1746 if (fixup_alt_jump) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1747 fixup_alt_jump = (fixup_alt_jump - old_buffer) + bufp->buffer;\
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1748 if (laststart) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1749 laststart = (laststart - old_buffer) + bufp->buffer; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1750 if (pending_exact) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1751 pending_exact = (pending_exact - old_buffer) + bufp->buffer; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1752 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1753 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1754
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1755
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1756 /* Since we have one byte reserved for the register number argument to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1757 {start,stop}_memory, the maximum number of groups we can report
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1758 things about is what fits in that byte. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1759 #define MAX_REGNUM 255
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1760
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1761 /* But patterns can have more than `MAX_REGNUM' registers. We just
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1762 ignore the excess.
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1763 #### not true! groups past this will fail in lots of ways, if we
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1764 ever have to backtrack.
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1765 */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1766 typedef int regnum_t;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1767
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1768 #define INIT_REG_TRANSLATE_SIZE 5
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1769
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1770 /* Macros for the compile stack. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1771
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1772 /* Since offsets can go either forwards or backwards, this type needs to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1773 be able to hold values from -(MAX_BUF_SIZE - 1) to MAX_BUF_SIZE - 1. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1774 typedef int pattern_offset_t;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1775
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1776 typedef struct
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1777 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1778 pattern_offset_t begalt_offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1779 pattern_offset_t fixup_alt_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1780 pattern_offset_t inner_group_offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1781 pattern_offset_t laststart_offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1782 regnum_t regnum;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1783 } compile_stack_elt_t;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1784
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1785
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1786 typedef struct
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1787 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1788 compile_stack_elt_t *stack;
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1789 int size;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
1790 int avail; /* Offset of next open position. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1791 } compile_stack_type;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1792
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1793
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1794 #define INIT_COMPILE_STACK_SIZE 32
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1795
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1796 #define COMPILE_STACK_EMPTY (compile_stack.avail == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1797 #define COMPILE_STACK_FULL (compile_stack.avail == compile_stack.size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1798
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1799 /* The next available element. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1800 #define COMPILE_STACK_TOP (compile_stack.stack[compile_stack.avail])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1801
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1802
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1803 /* Set the bit for character C in a bit vector. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1804 #define SET_LIST_BIT(c) \
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1805 (buf_end[((unsigned char) (c)) / BYTEWIDTH] \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1806 |= 1 << (((unsigned char) c) % BYTEWIDTH))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1807
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1808 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1809
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1810 /* Set the "bit" for character C in a range table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1811 #define SET_RANGETAB_BIT(c) put_range_table (rtab, c, c, Qt)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1812
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1813 /* Set the "bit" for character c in the appropriate table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1814 #define SET_EITHER_BIT(c) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1815 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1816 if (has_extended_chars) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1817 SET_RANGETAB_BIT (c); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1818 else \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1819 SET_LIST_BIT (c); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1820 } while (0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1821
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1822 #else /* not MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1823
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1824 #define SET_EITHER_BIT(c) SET_LIST_BIT (c)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1825
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1826 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1827
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1828
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1829 /* Get the next unsigned number in the uncompiled pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1830 #define GET_UNSIGNED_NUMBER(num) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1831 { if (p != pend) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1832 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1833 PATFETCH (c); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1834 while (ISDIGIT (c)) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1835 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1836 if (num < 0) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1837 num = 0; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1838 num = num * 10 + c - '0'; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1839 if (p == pend) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1840 break; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1841 PATFETCH (c); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1842 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1843 } \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1844 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1845
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1846 #define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1847
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1848 #define IS_CHAR_CLASS(string) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1849 (STREQ (string, "alpha") || STREQ (string, "upper") \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1850 || STREQ (string, "lower") || STREQ (string, "digit") \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1851 || STREQ (string, "alnum") || STREQ (string, "xdigit") \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1852 || STREQ (string, "space") || STREQ (string, "print") \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1853 || STREQ (string, "punct") || STREQ (string, "graph") \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1854 || STREQ (string, "cntrl") || STREQ (string, "blank"))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1855
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1856 static void store_op1 (re_opcode_t op, unsigned char *loc, int arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1857 static void store_op2 (re_opcode_t op, unsigned char *loc, int arg1, int arg2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1858 static void insert_op1 (re_opcode_t op, unsigned char *loc, int arg,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1859 unsigned char *end);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1860 static void insert_op2 (re_opcode_t op, unsigned char *loc, int arg1, int arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1861 unsigned char *end);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
1862 static re_bool at_begline_loc_p (re_char *pattern, re_char *p,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1863 reg_syntax_t syntax);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
1864 static re_bool at_endline_loc_p (re_char *p, re_char *pend, int syntax);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
1865 static re_bool group_in_compile_stack (compile_stack_type compile_stack,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1866 regnum_t regnum);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1867 static reg_errcode_t compile_range (re_char **p_ptr, re_char *pend,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1868 RE_TRANSLATE_TYPE translate,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1869 reg_syntax_t syntax,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1870 unsigned char *b);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1871 #ifdef MULE
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1872 static reg_errcode_t compile_extended_range (re_char **p_ptr,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1873 re_char *pend,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1874 RE_TRANSLATE_TYPE translate,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1875 reg_syntax_t syntax,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1876 Lisp_Object rtab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1877 #endif /* MULE */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
1878 static re_bool group_match_null_string_p (unsigned char **p,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1879 unsigned char *end,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1880 register_info_type *reg_info);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
1881 static re_bool alt_match_null_string_p (unsigned char *p, unsigned char *end,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1882 register_info_type *reg_info);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
1883 static re_bool common_op_match_null_string_p (unsigned char **p,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1884 unsigned char *end,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1885 register_info_type *reg_info);
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
1886 static int bcmp_translate (const unsigned char *s1, const unsigned char *s2,
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1887 REGISTER int len, RE_TRANSLATE_TYPE translate);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1888 static int re_match_2_internal (struct re_pattern_buffer *bufp,
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1889 re_char *string1, int size1,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1890 re_char *string2, int size2, int pos,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1891 struct re_registers *regs, int stop);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1892
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1893 #ifndef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1894
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1895 /* If we cannot allocate large objects within re_match_2_internal,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1896 we make the fail stack and register vectors global.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1897 The fail stack, we grow to the maximum size when a regexp
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1898 is compiled.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1899 The register vectors, we adjust in size each time we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1900 compile a regexp, according to the number of registers it needs. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1901
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1902 static fail_stack_type fail_stack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1903
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1904 /* Size with which the following vectors are currently allocated.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1905 That is so we can make them bigger as needed,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1906 but never make them smaller. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1907 static int regs_allocated_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1908
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1909 static re_char ** regstart, ** regend;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1910 static re_char ** old_regstart, ** old_regend;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1911 static re_char **best_regstart, **best_regend;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1912 static register_info_type *reg_info;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1913 static re_char **reg_dummy;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1914 static register_info_type *reg_info_dummy;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1915
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1916 /* Make the register vectors big enough for NUM_REGS registers,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1917 but don't make them smaller. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1918
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1919 static
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1920 regex_grow_registers (int num_regs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1921 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1922 if (num_regs > regs_allocated_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1923 {
551
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1924 RETALLOC (regstart, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1925 RETALLOC (regend, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1926 RETALLOC (old_regstart, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1927 RETALLOC (old_regend, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1928 RETALLOC (best_regstart, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1929 RETALLOC (best_regend, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1930 RETALLOC (reg_info, num_regs, register_info_type);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1931 RETALLOC (reg_dummy, num_regs, re_char *);
e9a3f8b4de53 [xemacs-hg @ 2001-05-21 05:26:06 by martinb]
martinb
parents: 544
diff changeset
1932 RETALLOC (reg_info_dummy, num_regs, register_info_type);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1933
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1934 regs_allocated_size = num_regs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1935 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1936 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1937
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1938 #endif /* not MATCH_MAY_ALLOCATE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1939
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1940 /* `regex_compile' compiles PATTERN (of length SIZE) according to SYNTAX.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1941 Returns one of error codes defined in `regex.h', or zero for success.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1942
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1943 Assumes the `allocated' (and perhaps `buffer') and `translate'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1944 fields are set in BUFP on entry.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1945
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1946 If it succeeds, results are put in BUFP (if it returns an error, the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1947 contents of BUFP are undefined):
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1948 `buffer' is the compiled pattern;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1949 `syntax' is set to SYNTAX;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1950 `used' is set to the length of the compiled pattern;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1951 `fastmap_accurate' is zero;
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1952 `re_ngroups' is the number of groups/subexpressions (including shy
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1953 groups) in PATTERN;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
1954 `re_nsub' is the number of non-shy groups in PATTERN;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1955 `not_bol' and `not_eol' are zero;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1956
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1957 The `fastmap' and `newline_anchor' fields are neither
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1958 examined nor set. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1959
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1960 /* Return, freeing storage we allocated. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1961 #define FREE_STACK_RETURN(value) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1962 return (free (compile_stack.stack), value)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1963
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1964 static reg_errcode_t
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1965 regex_compile (re_char *pattern, int size, reg_syntax_t syntax,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1966 struct re_pattern_buffer *bufp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1967 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1968 /* We fetch characters from PATTERN here. We declare these as int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1969 (or possibly long) so that chars above 127 can be used as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1970 array indices. The macros that fetch a character from the pattern
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1971 make sure to coerce to unsigned char before assigning, so we won't
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1972 get bitten by negative numbers here. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1973 /* XEmacs change: used to be unsigned char. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1974 REGISTER EMACS_INT c, c1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1975
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1976 /* A random temporary spot in PATTERN. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1977 re_char *p1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1978
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1979 /* Points to the end of the buffer, where we should append. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1980 REGISTER unsigned char *buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1981
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1982 /* Keeps track of unclosed groups. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1983 compile_stack_type compile_stack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1984
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1985 /* Points to the current (ending) position in the pattern. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1986 re_char *p = pattern;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1987 re_char *pend = pattern + size;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1988
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1989 /* How to translate the characters in the pattern. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
1990 RE_TRANSLATE_TYPE translate = bufp->translate;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1991
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1992 /* Address of the count-byte of the most recently inserted `exactn'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1993 command. This makes it possible to tell if a new exact-match
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1994 character can be added to that command or if the character requires
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1995 a new `exactn' command. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1996 unsigned char *pending_exact = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1997
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1998 /* Address of start of the most recently finished expression.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1999 This tells, e.g., postfix * where to find the start of its
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2000 operand. Reset at the beginning of groups and alternatives. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2001 unsigned char *laststart = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2002
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2003 /* Address of beginning of regexp, or inside of last group. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2004 unsigned char *begalt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2005
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2006 /* Place in the uncompiled pattern (i.e., the {) to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2007 which to go back if the interval is invalid. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2008 re_char *beg_interval;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2009
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2010 /* Address of the place where a forward jump should go to the end of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2011 the containing expression. Each alternative of an `or' -- except the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2012 last -- ends with a forward jump of this sort. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2013 unsigned char *fixup_alt_jump = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2014
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2015 /* Counts open-groups as they are encountered. Remembered for the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2016 matching close-group on the compile stack, so the same register
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2017 number is put in the stop_memory as the start_memory. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2018 regnum_t regnum = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2019
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2020 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2021 DEBUG_PRINT1 ("\nCompiling pattern: ");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2022 if (debug)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2023 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
2024 int debug_count;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2025
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2026 for (debug_count = 0; debug_count < size; debug_count++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2027 putchar (pattern[debug_count]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2028 putchar ('\n');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2029 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2030 #endif /* DEBUG */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2031
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2032 /* Initialize the compile stack. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2033 compile_stack.stack = TALLOC (INIT_COMPILE_STACK_SIZE, compile_stack_elt_t);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2034 if (compile_stack.stack == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2035 return REG_ESPACE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2036
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2037 compile_stack.size = INIT_COMPILE_STACK_SIZE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2038 compile_stack.avail = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2039
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2040 /* Initialize the pattern buffer. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2041 bufp->syntax = syntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2042 bufp->fastmap_accurate = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2043 bufp->not_bol = bufp->not_eol = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2044
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2045 /* Set `used' to zero, so that if we return an error, the pattern
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2046 printer (for debugging) will think there's no pattern. We reset it
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2047 at the end. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2048 bufp->used = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2049
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2050 /* Always count groups, whether or not bufp->no_sub is set. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2051 bufp->re_nsub = 0;
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2052 bufp->re_ngroups = 0;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2053
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2054 bufp->warned_about_incompatible_back_references = 0;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2055
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2056 if (bufp->external_to_internal_register == 0)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2057 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2058 bufp->external_to_internal_register_size = INIT_REG_TRANSLATE_SIZE;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2059 RETALLOC (bufp->external_to_internal_register,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2060 bufp->external_to_internal_register_size,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2061 int);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2062 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2063
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2064 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2065 int i;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2066
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2067 bufp->external_to_internal_register[0] = 0;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2068 for (i = 1; i < bufp->external_to_internal_register_size; i++)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2069 bufp->external_to_internal_register[i] = (int) 0xDEADBEEF;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2070 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2071
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2072 #if !defined (emacs) && !defined (SYNTAX_TABLE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2073 /* Initialize the syntax table. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2074 init_syntax_once ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2075 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2076
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2077 if (bufp->allocated == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2078 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2079 if (bufp->buffer)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2080 { /* If zero allocated, but buffer is non-null, try to realloc
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2081 enough space. This loses if buffer's address is bogus, but
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2082 that is the user's responsibility. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2083 RETALLOC (bufp->buffer, INIT_BUF_SIZE, unsigned char);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2084 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2085 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2086 { /* Caller did not allocate a buffer. Do it for them. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2087 bufp->buffer = TALLOC (INIT_BUF_SIZE, unsigned char);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2088 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2089 if (!bufp->buffer) FREE_STACK_RETURN (REG_ESPACE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2090
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2091 bufp->allocated = INIT_BUF_SIZE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2092 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2093
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2094 begalt = buf_end = bufp->buffer;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2095
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2096 /* Loop through the uncompiled pattern until we're at the end. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2097 while (p != pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2098 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2099 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2100
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2101 switch (c)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2102 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2103 case '^':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2104 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2105 if ( /* If at start of pattern, it's an operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2106 p == pattern + 1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2107 /* If context independent, it's an operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2108 || syntax & RE_CONTEXT_INDEP_ANCHORS
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2109 /* Otherwise, depends on what's come before. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2110 || at_begline_loc_p (pattern, p, syntax))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2111 BUF_PUSH (begline);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2112 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2113 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2114 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2115 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2116
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2117
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2118 case '$':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2119 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2120 if ( /* If at end of pattern, it's an operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2121 p == pend
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2122 /* If context independent, it's an operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2123 || syntax & RE_CONTEXT_INDEP_ANCHORS
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2124 /* Otherwise, depends on what's next. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2125 || at_endline_loc_p (p, pend, syntax))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2126 BUF_PUSH (endline);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2127 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2128 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2129 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2130 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2131
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2132
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2133 case '+':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2134 case '?':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2135 if ((syntax & RE_BK_PLUS_QM)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2136 || (syntax & RE_LIMITED_OPS))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2137 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2138 handle_plus:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2139 case '*':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2140 /* If there is no previous pattern... */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2141 if (!laststart)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2142 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2143 if (syntax & RE_CONTEXT_INVALID_OPS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2144 FREE_STACK_RETURN (REG_BADRPT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2145 else if (!(syntax & RE_CONTEXT_INDEP_OPS))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2146 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2147 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2148
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2149 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2150 /* true means zero/many matches are allowed. */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2151 re_bool zero_times_ok = c != '+';
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2152 re_bool many_times_ok = c != '?';
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2153
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2154 /* true means match shortest string possible. */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2155 re_bool minimal = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2156
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2157 /* If there is a sequence of repetition chars, collapse it
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2158 down to just one (the right one). We can't combine
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2159 interval operators with these because of, e.g., `a{2}*',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2160 which should only match an even number of `a's. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2161 while (p != pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2162 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2163 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2164
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2165 if (c == '*' || (!(syntax & RE_BK_PLUS_QM)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2166 && (c == '+' || c == '?')))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2167 ;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2168
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2169 else if (syntax & RE_BK_PLUS_QM && c == '\\')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2170 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2171 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2172
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2173 PATFETCH (c1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2174 if (!(c1 == '+' || c1 == '?'))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2175 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2176 PATUNFETCH;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2177 PATUNFETCH;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2178 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2179 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2180
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2181 c = c1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2182 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2183 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2184 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2185 PATUNFETCH;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2186 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2187 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2188
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2189 /* If we get here, we found another repeat character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2190 if (!(syntax & RE_NO_MINIMAL_MATCHING))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2191 {
440
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
2192 /* "*?" and "+?" and "??" are okay (and mean match
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
2193 minimally), but other sequences (such as "*??" and
8de8e3f6228a Import from CVS: tag r21-2-28
cvs
parents: 434
diff changeset
2194 "+++") are rejected (reserved for future use). */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2195 if (minimal || c != '?')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2196 FREE_STACK_RETURN (REG_BADRPT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2197 minimal = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2198 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2199 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2200 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2201 zero_times_ok |= c != '+';
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2202 many_times_ok |= c != '?';
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2203 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2204 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2205
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2206 /* Star, etc. applied to an empty pattern is equivalent
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2207 to an empty pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2208 if (!laststart)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2209 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2210
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2211 /* Now we know whether zero matches is allowed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2212 and whether two or more matches is allowed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2213 and whether we want minimal or maximal matching. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2214 if (minimal)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2215 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2216 if (!many_times_ok)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2217 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2218 /* "a??" becomes:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2219 0: /on_failure_jump to 6
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2220 3: /jump to 9
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2221 6: /exactn/1/A
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2222 9: end of pattern.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2223 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2224 GET_BUFFER_SPACE (6);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2225 INSERT_JUMP (jump, laststart, buf_end + 3);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2226 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2227 INSERT_JUMP (on_failure_jump, laststart, laststart + 6);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2228 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2229 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2230 else if (zero_times_ok)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2231 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2232 /* "a*?" becomes:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2233 0: /jump to 6
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2234 3: /exactn/1/A
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2235 6: /on_failure_jump to 3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2236 9: end of pattern.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2237 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2238 GET_BUFFER_SPACE (6);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2239 INSERT_JUMP (jump, laststart, buf_end + 3);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2240 buf_end += 3;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2241 STORE_JUMP (on_failure_jump, buf_end, laststart + 3);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2242 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2243 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2244 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2245 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2246 /* "a+?" becomes:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2247 0: /exactn/1/A
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2248 3: /on_failure_jump to 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2249 6: end of pattern.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2250 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2251 GET_BUFFER_SPACE (3);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2252 STORE_JUMP (on_failure_jump, buf_end, laststart);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2253 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2254 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2255 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2256 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2257 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2258 /* Are we optimizing this jump? */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2259 re_bool keep_string_p = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2260
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2261 if (many_times_ok)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2262 { /* More than one repetition is allowed, so put in
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2263 at the end a backward relative jump from
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2264 `buf_end' to before the next jump we're going
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2265 to put in below (which jumps from laststart to
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2266 after this jump).
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2267
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2268 But if we are at the `*' in the exact sequence `.*\n',
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2269 insert an unconditional jump backwards to the .,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2270 instead of the beginning of the loop. This way we only
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2271 push a failure point once, instead of every time
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2272 through the loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2273 assert (p - 1 > pattern);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2274
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2275 /* Allocate the space for the jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2276 GET_BUFFER_SPACE (3);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2277
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2278 /* We know we are not at the first character of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2279 pattern, because laststart was nonzero. And we've
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2280 already incremented `p', by the way, to be the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2281 character after the `*'. Do we have to do something
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2282 analogous here for null bytes, because of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2283 RE_DOT_NOT_NULL? */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2284 if (*(p - 2) == '.'
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2285 && zero_times_ok
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2286 && p < pend && *p == '\n'
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2287 && !(syntax & RE_DOT_NEWLINE))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2288 { /* We have .*\n. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2289 STORE_JUMP (jump, buf_end, laststart);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2290 keep_string_p = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2291 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2292 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2293 /* Anything else. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2294 STORE_JUMP (maybe_pop_jump, buf_end, laststart - 3);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2295
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2296 /* We've added more stuff to the buffer. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2297 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2298 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2299
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2300 /* On failure, jump from laststart to buf_end + 3,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2301 which will be the end of the buffer after this jump
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2302 is inserted. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2303 GET_BUFFER_SPACE (3);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2304 INSERT_JUMP (keep_string_p ? on_failure_keep_string_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2305 : on_failure_jump,
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2306 laststart, buf_end + 3);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2307 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2308
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2309 if (!zero_times_ok)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2310 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2311 /* At least one repetition is required, so insert a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2312 `dummy_failure_jump' before the initial
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2313 `on_failure_jump' instruction of the loop. This
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2314 effects a skip over that instruction the first time
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2315 we hit that loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2316 GET_BUFFER_SPACE (3);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2317 INSERT_JUMP (dummy_failure_jump, laststart, laststart + 6);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2318 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2319 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2320 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2321 pending_exact = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2322 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2323 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2324
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2325
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2326 case '.':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2327 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2328 BUF_PUSH (anychar);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2329 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2330
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2331
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2332 case '[':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2333 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2334 /* XEmacs change: this whole section */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2335 re_bool had_char_class = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2336 #ifdef MULE
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2337 re_bool has_extended_chars = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2338 REGISTER Lisp_Object rtab = Qnil;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2339 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2340
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2341 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2342
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2343 /* Ensure that we have enough space to push a charset: the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2344 opcode, the length count, and the bitset; 34 bytes in all. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2345 GET_BUFFER_SPACE (34);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2346
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2347 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2348
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2349 /* We test `*p == '^' twice, instead of using an if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2350 statement, so we only need one BUF_PUSH. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2351 BUF_PUSH (*p == '^' ? charset_not : charset);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2352 if (*p == '^')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2353 p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2354
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2355 /* Remember the first position in the bracket expression. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2356 p1 = p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2357
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2358 /* Push the number of bytes in the bitmap. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2359 BUF_PUSH ((1 << BYTEWIDTH) / BYTEWIDTH);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2361 /* Clear the whole map. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2362 memset (buf_end, 0, (1 << BYTEWIDTH) / BYTEWIDTH);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2363
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2364 /* charset_not matches newline according to a syntax bit. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2365 if ((re_opcode_t) buf_end[-2] == charset_not
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2366 && (syntax & RE_HAT_LISTS_NOT_NEWLINE))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2367 SET_LIST_BIT ('\n');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2368
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2369 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2370 start_over_with_extended:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2371 if (has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2372 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2373 /* There are extended chars here, which means we need to start
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2374 over and shift to unified range-table format. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2375 if (buf_end[-2] == charset)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2376 buf_end[-2] = charset_mule;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2377 else
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2378 buf_end[-2] = charset_mule_not;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2379 buf_end--;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2380 p = p1; /* go back to the beginning of the charset, after
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2381 a possible ^. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2382 rtab = Vthe_lisp_rangetab;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2383 Fclear_range_table (rtab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2384
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2385 /* charset_not matches newline according to a syntax bit. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2386 if ((re_opcode_t) buf_end[-1] == charset_mule_not
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2387 && (syntax & RE_HAT_LISTS_NOT_NEWLINE))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2388 SET_EITHER_BIT ('\n');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2389 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2390 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2391
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2392 /* Read in characters and ranges, setting map bits. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2393 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2394 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2395 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2396
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2397 PATFETCH (c);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2398
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2399 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2400 if (c >= 0x80 && !has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2401 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2402 has_extended_chars = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2403 /* Frumble-bumble, we've found some extended chars.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2404 Need to start over, process everything using
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2405 the general extended-char mechanism, and need
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2406 to use charset_mule and charset_mule_not instead
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2407 of charset and charset_not. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2408 goto start_over_with_extended;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2409 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2410 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2411 /* \ might escape characters inside [...] and [^...]. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2412 if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2413 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2414 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2415
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2416 PATFETCH (c1);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2417 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2418 if (c1 >= 0x80 && !has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2419 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2420 has_extended_chars = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2421 goto start_over_with_extended;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2422 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2423 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2424 SET_EITHER_BIT (c1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2425 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2426 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2427
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2428 /* Could be the end of the bracket expression. If it's
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2429 not (i.e., when the bracket expression is `[]' so
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2430 far), the ']' character bit gets set way below. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2431 if (c == ']' && p != p1 + 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2432 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2433
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2434 /* Look ahead to see if it's a range when the last thing
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2435 was a character class. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2436 if (had_char_class && c == '-' && *p != ']')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2437 FREE_STACK_RETURN (REG_ERANGE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2438
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2439 /* Look ahead to see if it's a range when the last thing
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2440 was a character: if this is a hyphen not at the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2441 beginning or the end of a list, then it's the range
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2442 operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2443 if (c == '-'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2444 && !(p - 2 >= pattern && p[-2] == '[')
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2445 && !(p - 3 >= pattern && p[-3] == '[' && p[-2] == '^')
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2446 && *p != ']')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2447 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2448 reg_errcode_t ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2449
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2450 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2451 if (* (unsigned char *) p >= 0x80 && !has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2452 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2453 has_extended_chars = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2454 goto start_over_with_extended;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2455 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2456 if (has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2457 ret = compile_extended_range (&p, pend, translate,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2458 syntax, rtab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2459 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2460 #endif /* MULE */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2461 ret = compile_range (&p, pend, translate, syntax, buf_end);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2462 if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2463 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2464
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2465 else if (p[0] == '-' && p[1] != ']')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2466 { /* This handles ranges made up of characters only. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2467 reg_errcode_t ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2468
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2469 /* Move past the `-'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2470 PATFETCH (c1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2471
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2472 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2473 if (* (unsigned char *) p >= 0x80 && !has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2474 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2475 has_extended_chars = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2476 goto start_over_with_extended;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2477 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2478 if (has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2479 ret = compile_extended_range (&p, pend, translate,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2480 syntax, rtab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2481 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2482 #endif /* MULE */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2483 ret = compile_range (&p, pend, translate, syntax, buf_end);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2484 if (ret != REG_NOERROR) FREE_STACK_RETURN (ret);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2485 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2486
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2487 /* See if we're at the beginning of a possible character
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2488 class. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2489
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2490 else if (syntax & RE_CHAR_CLASSES && c == '[' && *p == ':')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2491 { /* Leave room for the null. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2492 char str[CHAR_CLASS_MAX_LENGTH + 1];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2493
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2494 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2495 c1 = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2496
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2497 /* If pattern is `[[:'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2498 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2499
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2500 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2501 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2502 /* #### This code is unused.
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2503 Correctness is not checked after TRT
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2504 table change. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2505 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2506 if (c == ':' || c == ']' || p == pend
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2507 || c1 == CHAR_CLASS_MAX_LENGTH)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2508 break;
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
2509 str[c1++] = (char) c;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2510 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2511 str[c1] = '\0';
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2512
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2513 /* If isn't a word bracketed by `[:' and `:]':
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2514 undo the ending character, the letters, and leave
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2515 the leading `:' and `[' (but set bits for them). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2516 if (c == ':' && *p == ']')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2517 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2518 int ch;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2519 re_bool is_alnum = STREQ (str, "alnum");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2520 re_bool is_alpha = STREQ (str, "alpha");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2521 re_bool is_blank = STREQ (str, "blank");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2522 re_bool is_cntrl = STREQ (str, "cntrl");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2523 re_bool is_digit = STREQ (str, "digit");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2524 re_bool is_graph = STREQ (str, "graph");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2525 re_bool is_lower = STREQ (str, "lower");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2526 re_bool is_print = STREQ (str, "print");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2527 re_bool is_punct = STREQ (str, "punct");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2528 re_bool is_space = STREQ (str, "space");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2529 re_bool is_upper = STREQ (str, "upper");
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
2530 re_bool is_xdigit = STREQ (str, "xdigit");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2531
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2532 if (!IS_CHAR_CLASS (str))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2533 FREE_STACK_RETURN (REG_ECTYPE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2534
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2535 /* Throw away the ] at the end of the character
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2536 class. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2537 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2538
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2539 if (p == pend) FREE_STACK_RETURN (REG_EBRACK);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2540
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2541 for (ch = 0; ch < 1 << BYTEWIDTH; ch++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2542 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2543 /* This was split into 3 if's to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2544 avoid an arbitrary limit in some compiler. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2545 if ( (is_alnum && ISALNUM (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2546 || (is_alpha && ISALPHA (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2547 || (is_blank && ISBLANK (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2548 || (is_cntrl && ISCNTRL (ch)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2549 SET_EITHER_BIT (ch);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2550 if ( (is_digit && ISDIGIT (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2551 || (is_graph && ISGRAPH (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2552 || (is_lower && ISLOWER (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2553 || (is_print && ISPRINT (ch)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2554 SET_EITHER_BIT (ch);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2555 if ( (is_punct && ISPUNCT (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2556 || (is_space && ISSPACE (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2557 || (is_upper && ISUPPER (ch))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2558 || (is_xdigit && ISXDIGIT (ch)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2559 SET_EITHER_BIT (ch);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2560 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2561 had_char_class = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2562 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2563 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2564 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2565 c1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2566 while (c1--)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2567 PATUNFETCH;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2568 SET_EITHER_BIT ('[');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2569 SET_EITHER_BIT (':');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2570 had_char_class = false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2571 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2572 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2573 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2574 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2575 had_char_class = false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2576 SET_EITHER_BIT (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2577 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2578 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2579
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2580 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2581 if (has_extended_chars)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2582 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2583 /* We have a range table, not a bit vector. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2584 int bytes_needed =
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2585 unified_range_table_bytes_needed (rtab);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2586 GET_BUFFER_SPACE (bytes_needed);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2587 unified_range_table_copy_data (rtab, buf_end);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2588 buf_end += unified_range_table_bytes_used (buf_end);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2589 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2590 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2591 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2592 /* Discard any (non)matching list bytes that are all 0 at the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2593 end of the map. Decrease the map-length byte too. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2594 while ((int) buf_end[-1] > 0 && buf_end[buf_end[-1] - 1] == 0)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2595 buf_end[-1]--;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2596 buf_end += buf_end[-1];
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2597 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2598 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2599
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2600
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2601 case '(':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2602 if (syntax & RE_NO_BK_PARENS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2603 goto handle_open;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2604 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2605 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2606
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2607
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2608 case ')':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2609 if (syntax & RE_NO_BK_PARENS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2610 goto handle_close;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2611 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2612 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2613
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2614
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2615 case '\n':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2616 if (syntax & RE_NEWLINE_ALT)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2617 goto handle_alt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2618 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2619 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2620
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2621
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2622 case '|':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2623 if (syntax & RE_NO_BK_VBAR)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2624 goto handle_alt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2625 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2626 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2627
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2628
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2629 case '{':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2630 if (syntax & RE_INTERVALS && syntax & RE_NO_BK_BRACES)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2631 goto handle_interval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2632 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2633 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2634
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2635
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2636 case '\\':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2637 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2638
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2639 /* Do not translate the character after the \, so that we can
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2640 distinguish, e.g., \B from \b, even if we normally would
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2641 translate, e.g., B to b. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2642 PATFETCH_RAW (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2643
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2644 switch (c)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2645 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2646 case '(':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2647 if (syntax & RE_NO_BK_PARENS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2648 goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2649
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2650 handle_open:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2651 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2652 regnum_t r;
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2653 int shy = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2654
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2655 if (!(syntax & RE_NO_SHY_GROUPS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2656 && p != pend
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2657 && *p == '?')
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2658 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2659 p++;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2660 PATFETCH (c);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2661 switch (c)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2662 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2663 case ':': /* shy groups */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2664 shy = 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2665 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2666
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2667 /* All others are reserved for future constructs. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2668 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2669 FREE_STACK_RETURN (REG_BADPAT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2670 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2671 }
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2672
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2673 r = ++regnum;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2674 bufp->re_ngroups++;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2675 if (!shy)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2676 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2677 bufp->re_nsub++;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2678 while (bufp->external_to_internal_register_size <=
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2679 bufp->re_nsub)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2680 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2681 int i;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2682 int old_size =
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2683 bufp->external_to_internal_register_size;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2684 bufp->external_to_internal_register_size += 5;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2685 RETALLOC (bufp->external_to_internal_register,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2686 bufp->external_to_internal_register_size,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2687 int);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2688 /* debugging */
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2689 for (i = old_size;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2690 i < bufp->external_to_internal_register_size; i++)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2691 bufp->external_to_internal_register[i] =
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2692 (int) 0xDEADBEEF;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2693 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2694
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2695 bufp->external_to_internal_register[bufp->re_nsub] =
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2696 bufp->re_ngroups;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2697 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2698
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2699 if (COMPILE_STACK_FULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2700 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2701 RETALLOC (compile_stack.stack, compile_stack.size << 1,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2702 compile_stack_elt_t);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2703 if (compile_stack.stack == NULL) return REG_ESPACE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2704
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2705 compile_stack.size <<= 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2706 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2707
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2708 /* These are the values to restore when we hit end of this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2709 group. They are all relative offsets, so that if the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2710 whole pattern moves because of realloc, they will still
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2711 be valid. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2712 COMPILE_STACK_TOP.begalt_offset = begalt - bufp->buffer;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2713 COMPILE_STACK_TOP.fixup_alt_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2714 = fixup_alt_jump ? fixup_alt_jump - bufp->buffer + 1 : 0;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2715 COMPILE_STACK_TOP.laststart_offset = buf_end - bufp->buffer;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2716 COMPILE_STACK_TOP.regnum = r;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2717
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2718 /* We will eventually replace the 0 with the number of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2719 groups inner to this one. But do not push a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2720 start_memory for groups beyond the last one we can
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2721 represent in the compiled pattern.
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2722 #### bad bad bad. this will fail in lots of ways, if we
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2723 ever have to backtrack for these groups.
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
2724 */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2725 if (r <= MAX_REGNUM)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2726 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2727 COMPILE_STACK_TOP.inner_group_offset
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2728 = buf_end - bufp->buffer + 2;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2729 BUF_PUSH_3 (start_memory, r, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2730 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2731
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2732 compile_stack.avail++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2733
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2734 fixup_alt_jump = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2735 laststart = 0;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2736 begalt = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2737 /* If we've reached MAX_REGNUM groups, then this open
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2738 won't actually generate any code, so we'll have to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2739 clear pending_exact explicitly. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2740 pending_exact = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2741 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2742 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2743
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2744
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2745 case ')':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2746 if (syntax & RE_NO_BK_PARENS) goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2747
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2748 if (COMPILE_STACK_EMPTY) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2749 if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2750 goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2751 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2752 FREE_STACK_RETURN (REG_ERPAREN);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2753 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2754
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2755 handle_close:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2756 if (fixup_alt_jump)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2757 { /* Push a dummy failure point at the end of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2758 alternative for a possible future
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2759 `pop_failure_jump' to pop. See comments at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2760 `push_dummy_failure' in `re_match_2'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2761 BUF_PUSH (push_dummy_failure);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2762
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2763 /* We allocated space for this jump when we assigned
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2764 to `fixup_alt_jump', in the `handle_alt' case below. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2765 STORE_JUMP (jump_past_alt, fixup_alt_jump, buf_end - 1);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2766 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2767
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2768 /* See similar code for backslashed left paren above. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2769 if (COMPILE_STACK_EMPTY) {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2770 if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2771 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2772 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2773 FREE_STACK_RETURN (REG_ERPAREN);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2774 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2775
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2776 /* Since we just checked for an empty stack above, this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2777 ``can't happen''. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2778 assert (compile_stack.avail != 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2779 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2780 /* We don't just want to restore into `regnum', because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2781 later groups should continue to be numbered higher,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2782 as in `(ab)c(de)' -- the second group is #2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2783 regnum_t this_group_regnum;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2784
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2785 compile_stack.avail--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2786 begalt = bufp->buffer + COMPILE_STACK_TOP.begalt_offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2787 fixup_alt_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2788 = COMPILE_STACK_TOP.fixup_alt_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2789 ? bufp->buffer + COMPILE_STACK_TOP.fixup_alt_jump - 1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2790 : 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2791 laststart = bufp->buffer + COMPILE_STACK_TOP.laststart_offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2792 this_group_regnum = COMPILE_STACK_TOP.regnum;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2793 /* If we've reached MAX_REGNUM groups, then this open
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2794 won't actually generate any code, so we'll have to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2795 clear pending_exact explicitly. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2796 pending_exact = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2797
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2798 /* We're at the end of the group, so now we know how many
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2799 groups were inside this one. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2800 if (this_group_regnum <= MAX_REGNUM)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2801 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2802 unsigned char *inner_group_loc
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2803 = bufp->buffer + COMPILE_STACK_TOP.inner_group_offset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2804
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2805 *inner_group_loc = regnum - this_group_regnum;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2806 BUF_PUSH_3 (stop_memory, this_group_regnum,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2807 regnum - this_group_regnum);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2808 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2809 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2810 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2811
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2812
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2813 case '|': /* `\|'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2814 if (syntax & RE_LIMITED_OPS || syntax & RE_NO_BK_VBAR)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2815 goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2816 handle_alt:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2817 if (syntax & RE_LIMITED_OPS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2818 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2819
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2820 /* Insert before the previous alternative a jump which
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2821 jumps to this alternative if the former fails. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2822 GET_BUFFER_SPACE (3);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2823 INSERT_JUMP (on_failure_jump, begalt, buf_end + 6);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2824 pending_exact = 0;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2825 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2826
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2827 /* The alternative before this one has a jump after it
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2828 which gets executed if it gets matched. Adjust that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2829 jump so it will jump to this alternative's analogous
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2830 jump (put in below, which in turn will jump to the next
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2831 (if any) alternative's such jump, etc.). The last such
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2832 jump jumps to the correct final destination. A picture:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2833 _____ _____
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2834 | | | |
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2835 | v | v
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2836 a | b | c
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2837
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2838 If we are at `b', then fixup_alt_jump right now points to a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2839 three-byte space after `a'. We'll put in the jump, set
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2840 fixup_alt_jump to right after `b', and leave behind three
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2841 bytes which we'll fill in when we get to after `c'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2842
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2843 if (fixup_alt_jump)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2844 STORE_JUMP (jump_past_alt, fixup_alt_jump, buf_end);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2845
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2846 /* Mark and leave space for a jump after this alternative,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2847 to be filled in later either by next alternative or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2848 when know we're at the end of a series of alternatives. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2849 fixup_alt_jump = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2850 GET_BUFFER_SPACE (3);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2851 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2852
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2853 laststart = 0;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2854 begalt = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2855 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2856
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2857
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2858 case '{':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2859 /* If \{ is a literal. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2860 if (!(syntax & RE_INTERVALS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2861 /* If we're at `\{' and it's not the open-interval
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2862 operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2863 || ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2864 || (p - 2 == pattern && p == pend))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2865 goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2866
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2867 handle_interval:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2868 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2869 /* If got here, then the syntax allows intervals. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2870
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2871 /* At least (most) this many matches must be made. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2872 int lower_bound = -1, upper_bound = -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2873
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2874 beg_interval = p - 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2875
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2876 if (p == pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2877 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2878 if (syntax & RE_NO_BK_BRACES)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2879 goto unfetch_interval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2880 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2881 FREE_STACK_RETURN (REG_EBRACE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2882 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2883
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2884 GET_UNSIGNED_NUMBER (lower_bound);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2885
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2886 if (c == ',')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2887 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2888 GET_UNSIGNED_NUMBER (upper_bound);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2889 if (upper_bound < 0) upper_bound = RE_DUP_MAX;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2890 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2891 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2892 /* Interval such as `{1}' => match exactly once. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2893 upper_bound = lower_bound;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2894
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2895 if (lower_bound < 0 || upper_bound > RE_DUP_MAX
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2896 || lower_bound > upper_bound)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2897 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2898 if (syntax & RE_NO_BK_BRACES)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2899 goto unfetch_interval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2900 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2901 FREE_STACK_RETURN (REG_BADBR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2902 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2903
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2904 if (!(syntax & RE_NO_BK_BRACES))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2905 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2906 if (c != '\\') FREE_STACK_RETURN (REG_EBRACE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2907
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2908 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2909 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2910
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2911 if (c != '}')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2912 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2913 if (syntax & RE_NO_BK_BRACES)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2914 goto unfetch_interval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2915 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2916 FREE_STACK_RETURN (REG_BADBR);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2917 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2918
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2919 /* We just parsed a valid interval. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2920
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2921 /* If it's invalid to have no preceding re. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2922 if (!laststart)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2923 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2924 if (syntax & RE_CONTEXT_INVALID_OPS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2925 FREE_STACK_RETURN (REG_BADRPT);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2926 else if (syntax & RE_CONTEXT_INDEP_OPS)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2927 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2928 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2929 goto unfetch_interval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2930 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2931
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2932 /* If the upper bound is zero, don't want to succeed at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2933 all; jump from `laststart' to `b + 3', which will be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2934 the end of the buffer after we insert the jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2935 if (upper_bound == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2936 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2937 GET_BUFFER_SPACE (3);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2938 INSERT_JUMP (jump, laststart, buf_end + 3);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2939 buf_end += 3;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2940 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2941
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2942 /* Otherwise, we have a nontrivial interval. When
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2943 we're all done, the pattern will look like:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2944 set_number_at <jump count> <upper bound>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2945 set_number_at <succeed_n count> <lower bound>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2946 succeed_n <after jump addr> <succeed_n count>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2947 <body of loop>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2948 jump_n <succeed_n addr> <jump count>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2949 (The upper bound and `jump_n' are omitted if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2950 `upper_bound' is 1, though.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2951 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2952 { /* If the upper bound is > 1, we need to insert
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2953 more at the end of the loop. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
2954 int nbytes = 10 + (upper_bound > 1) * 10;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2955
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2956 GET_BUFFER_SPACE (nbytes);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2957
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2958 /* Initialize lower bound of the `succeed_n', even
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2959 though it will be set during matching by its
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2960 attendant `set_number_at' (inserted next),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2961 because `re_compile_fastmap' needs to know.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2962 Jump to the `jump_n' we might insert below. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2963 INSERT_JUMP2 (succeed_n, laststart,
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2964 buf_end + 5 + (upper_bound > 1) * 5,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2965 lower_bound);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2966 buf_end += 5;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2967
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2968 /* Code to initialize the lower bound. Insert
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2969 before the `succeed_n'. The `5' is the last two
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2970 bytes of this `set_number_at', plus 3 bytes of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2971 the following `succeed_n'. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2972 insert_op2 (set_number_at, laststart, 5, lower_bound, buf_end);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2973 buf_end += 5;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2974
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2975 if (upper_bound > 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2976 { /* More than one repetition is allowed, so
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2977 append a backward jump to the `succeed_n'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2978 that starts this interval.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2979
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2980 When we've reached this during matching,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2981 we'll have matched the interval once, so
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2982 jump back only `upper_bound - 1' times. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2983 STORE_JUMP2 (jump_n, buf_end, laststart + 5,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2984 upper_bound - 1);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
2985 buf_end += 5;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2986
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2987 /* The location we want to set is the second
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2988 parameter of the `jump_n'; that is `b-2' as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2989 an absolute address. `laststart' will be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2990 the `set_number_at' we're about to insert;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2991 `laststart+3' the number to set, the source
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2992 for the relative address. But we are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2993 inserting into the middle of the pattern --
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2994 so everything is getting moved up by 5.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2995 Conclusion: (b - 2) - (laststart + 3) + 5,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2996 i.e., b - laststart.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2997
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2998 We insert this at the beginning of the loop
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2999 so that if we fail during matching, we'll
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3000 reinitialize the bounds. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3001 insert_op2 (set_number_at, laststart,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3002 buf_end - laststart,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3003 upper_bound - 1, buf_end);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3004 buf_end += 5;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3005 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3006 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3007 pending_exact = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3008 beg_interval = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3009 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3010 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3011
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3012 unfetch_interval:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3013 /* If an invalid interval, match the characters as literals. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3014 assert (beg_interval);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3015 p = beg_interval;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3016 beg_interval = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3017
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3018 /* normal_char and normal_backslash need `c'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3019 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3020
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3021 if (!(syntax & RE_NO_BK_BRACES))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3022 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3023 if (p > pattern && p[-1] == '\\')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3024 goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3025 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3026 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3027
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3028 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3029 /* There is no way to specify the before_dot and after_dot
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3030 operators. rms says this is ok. --karl */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3031 case '=':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3032 BUF_PUSH (at_dot);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3033 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3034
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3035 case 's':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3036 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3037 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3038 /* XEmacs addition */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3039 if (c >= 0x80 || syntax_spec_code[c] == 0377)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3040 FREE_STACK_RETURN (REG_ESYNTAX);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3041 BUF_PUSH_2 (syntaxspec, syntax_spec_code[c]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3042 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3043
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3044 case 'S':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3045 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3046 PATFETCH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3047 /* XEmacs addition */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3048 if (c >= 0x80 || syntax_spec_code[c] == 0377)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3049 FREE_STACK_RETURN (REG_ESYNTAX);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3050 BUF_PUSH_2 (notsyntaxspec, syntax_spec_code[c]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3051 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3052
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3053 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3054 /* 97.2.17 jhod merged in to XEmacs from mule-2.3 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3055 case 'c':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3056 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3057 PATFETCH_RAW (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3058 if (c < 32 || c > 127)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3059 FREE_STACK_RETURN (REG_ECATEGORY);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3060 BUF_PUSH_2 (categoryspec, c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3061 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3062
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3063 case 'C':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3064 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3065 PATFETCH_RAW (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3066 if (c < 32 || c > 127)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3067 FREE_STACK_RETURN (REG_ECATEGORY);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3068 BUF_PUSH_2 (notcategoryspec, c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3069 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3070 /* end of category patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3071 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3072 #endif /* emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3073
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3074
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3075 case 'w':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3076 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3077 BUF_PUSH (wordchar);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3078 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3079
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3080
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3081 case 'W':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3082 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3083 BUF_PUSH (notwordchar);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3084 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3085
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3086
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3087 case '<':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3088 BUF_PUSH (wordbeg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3089 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3090
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3091 case '>':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3092 BUF_PUSH (wordend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3093 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3094
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3095 case 'b':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3096 BUF_PUSH (wordbound);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3097 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3098
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3099 case 'B':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3100 BUF_PUSH (notwordbound);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3101 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3102
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3103 case '`':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3104 BUF_PUSH (begbuf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3105 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3106
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3107 case '\'':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3108 BUF_PUSH (endbuf);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3109 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3110
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3111 case '1': case '2': case '3': case '4': case '5':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3112 case '6': case '7': case '8': case '9':
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3113 {
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3114 regnum_t reg, regint;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3115 int may_need_to_unfetch = 0;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3116 if (syntax & RE_NO_BK_REFS)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3117 goto normal_char;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3118
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3119 /* This only goes up to 99. It could be extended to work
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3120 up to 255 (the maximum number of registers that can be
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3121 handled by the current regexp engine, because it stores
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3122 its register numbers in the compiled pattern as one byte,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3123 ugh). Doing that's a bit trickier, because you might
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3124 have the case where \25 a back-ref but \255 is not, ... */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3125 reg = c - '0';
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3126 if (p < pend)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3127 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3128 PATFETCH (c);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3129 if (c >= '0' && c <= '9')
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3130 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3131 regnum_t new_reg = reg * 10 + c - '0';
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3132 if (new_reg <= bufp->re_nsub)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3133 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3134 reg = new_reg;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3135 may_need_to_unfetch = 1;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3136 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3137 else
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3138 PATUNFETCH;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3139 }
523
cd662ad69f40 [xemacs-hg @ 2001-05-09 13:43:49 by ben]
ben
parents: 502
diff changeset
3140 else
cd662ad69f40 [xemacs-hg @ 2001-05-09 13:43:49 by ben]
ben
parents: 502
diff changeset
3141 PATUNFETCH;
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3142 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3143
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3144 if (reg > bufp->re_nsub)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3145 FREE_STACK_RETURN (REG_ESUBREG);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3146
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3147 regint = bufp->external_to_internal_register[reg];
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3148 /* Can't back reference to a subexpression if inside of it. */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3149 if (group_in_compile_stack (compile_stack, regint))
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3150 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3151 if (may_need_to_unfetch)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3152 PATUNFETCH;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3153 goto normal_char;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3154 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3155
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3156 #ifdef emacs
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3157 if (reg > 9 &&
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3158 bufp->warned_about_incompatible_back_references == 0)
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3159 {
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3160 bufp->warned_about_incompatible_back_references = 1;
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3161 warn_when_safe (intern ("regex"), Qinfo,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3162 "Back reference \\%d now has new "
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3163 "semantics in %s", reg, pattern);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3164 }
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3165 #endif
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3166
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3167 laststart = buf_end;
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3168 BUF_PUSH_2 (duplicate, regint);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3169 }
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3170 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3171
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3172
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3173 case '+':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3174 case '?':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3175 if (syntax & RE_BK_PLUS_QM)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3176 goto handle_plus;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3177 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3178 goto normal_backslash;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3179
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3180 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3181 normal_backslash:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3182 /* You might think it would be useful for \ to mean
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3183 not to translate; but if we don't translate it,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3184 it will never match anything. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3185 c = TRANSLATE (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3186 goto normal_char;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3187 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3188 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3189
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3190
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3191 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3192 /* Expects the character in `c'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3193 /* `p' points to the location after where `c' came from. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3194 normal_char:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3195 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3196 /* XEmacs: modifications here for Mule. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3197 /* `q' points to the beginning of the next char. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3198 re_char *q = p;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3199
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3200 /* If no exactn currently being built. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3201 if (!pending_exact
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3202
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3203 /* If last exactn not at current position. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3204 || pending_exact + *pending_exact + 1 != buf_end
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3205
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3206 /* We have only one byte following the exactn for the count. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3207 || ((unsigned int) (*pending_exact + (q - p)) >=
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3208 ((unsigned int) (1 << BYTEWIDTH) - 1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3209
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3210 /* If followed by a repetition operator. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3211 || *q == '*' || *q == '^'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3212 || ((syntax & RE_BK_PLUS_QM)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3213 ? *q == '\\' && (q[1] == '+' || q[1] == '?')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3214 : (*q == '+' || *q == '?'))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3215 || ((syntax & RE_INTERVALS)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3216 && ((syntax & RE_NO_BK_BRACES)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3217 ? *q == '{'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3218 : (q[0] == '\\' && q[1] == '{'))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3219 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3220 /* Start building a new exactn. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3221
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3222 laststart = buf_end;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3223
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3224 BUF_PUSH_2 (exactn, 0);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3225 pending_exact = buf_end - 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3226 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3227
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3228 #ifndef MULE
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3229 BUF_PUSH (c);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3230 (*pending_exact)++;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3231 #else
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3232 {
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3233 Bytecount bt_count;
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
3234 Intbyte tmp_buf[MAX_EMCHAR_LEN];
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3235 int i;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3236
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3237 bt_count = set_charptr_emchar (tmp_buf, c);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3238
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3239 for (i = 0; i < bt_count; i++)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3240 {
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3241 BUF_PUSH (tmp_buf[i]);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3242 (*pending_exact)++;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3243 }
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3244 }
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3245 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3246 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3247 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3248 } /* switch (c) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3249 } /* while p != pend */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3250
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3251
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3252 /* Through the pattern now. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3253
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3254 if (fixup_alt_jump)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3255 STORE_JUMP (jump_past_alt, fixup_alt_jump, buf_end);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3256
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3257 if (!COMPILE_STACK_EMPTY)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3258 FREE_STACK_RETURN (REG_EPAREN);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3259
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3260 /* If we don't want backtracking, force success
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3261 the first time we reach the end of the compiled pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3262 if (syntax & RE_NO_POSIX_BACKTRACKING)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3263 BUF_PUSH (succeed);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3264
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3265 free (compile_stack.stack);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3266
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3267 /* We have succeeded; set the length of the buffer. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3268 bufp->used = buf_end - bufp->buffer;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3269
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3270 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3271 if (debug)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3272 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3273 DEBUG_PRINT1 ("\nCompiled pattern: \n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3274 print_compiled_pattern (bufp);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3275 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3276 #endif /* DEBUG */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3277
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3278 #ifndef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3279 /* Initialize the failure stack to the largest possible stack. This
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3280 isn't necessary unless we're trying to avoid calling alloca in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3281 the search and match routines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3282 {
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
3283 int num_regs = bufp->re_ngroups + 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3284
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3285 /* Since DOUBLE_FAIL_STACK refuses to double only if the current size
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3286 is strictly greater than re_max_failures, the largest possible stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3287 is 2 * re_max_failures failure points. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3288 if (fail_stack.size < (2 * re_max_failures * MAX_FAILURE_ITEMS))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3289 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3290 fail_stack.size = (2 * re_max_failures * MAX_FAILURE_ITEMS);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3291
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3292 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3293 if (! fail_stack.stack)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3294 fail_stack.stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3295 = (fail_stack_elt_t *) xmalloc (fail_stack.size
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3296 * sizeof (fail_stack_elt_t));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3297 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3298 fail_stack.stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3299 = (fail_stack_elt_t *) xrealloc (fail_stack.stack,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3300 (fail_stack.size
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3301 * sizeof (fail_stack_elt_t)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3302 #else /* not emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3303 if (! fail_stack.stack)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3304 fail_stack.stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3305 = (fail_stack_elt_t *) malloc (fail_stack.size
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3306 * sizeof (fail_stack_elt_t));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3307 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3308 fail_stack.stack
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3309 = (fail_stack_elt_t *) realloc (fail_stack.stack,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3310 (fail_stack.size
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3311 * sizeof (fail_stack_elt_t)));
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3312 #endif /* emacs */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3313 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3314
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3315 regex_grow_registers (num_regs);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3316 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3317 #endif /* not MATCH_MAY_ALLOCATE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3318
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3319 return REG_NOERROR;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3320 } /* regex_compile */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3321
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3322 /* Subroutines for `regex_compile'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3323
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3324 /* Store OP at LOC followed by two-byte integer parameter ARG. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3325
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3326 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3327 store_op1 (re_opcode_t op, unsigned char *loc, int arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3328 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3329 *loc = (unsigned char) op;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3330 STORE_NUMBER (loc + 1, arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3331 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3332
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3333
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3334 /* Like `store_op1', but for two two-byte parameters ARG1 and ARG2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3335
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3336 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3337 store_op2 (re_opcode_t op, unsigned char *loc, int arg1, int arg2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3338 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3339 *loc = (unsigned char) op;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3340 STORE_NUMBER (loc + 1, arg1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3341 STORE_NUMBER (loc + 3, arg2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3342 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3343
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3344
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3345 /* Copy the bytes from LOC to END to open up three bytes of space at LOC
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3346 for OP followed by two-byte integer parameter ARG. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3347
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3348 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3349 insert_op1 (re_opcode_t op, unsigned char *loc, int arg, unsigned char *end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3350 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3351 REGISTER unsigned char *pfrom = end;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3352 REGISTER unsigned char *pto = end + 3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3353
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3354 while (pfrom != loc)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3355 *--pto = *--pfrom;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3356
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3357 store_op1 (op, loc, arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3358 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3359
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3361 /* Like `insert_op1', but for two two-byte parameters ARG1 and ARG2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3362
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3363 static void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3364 insert_op2 (re_opcode_t op, unsigned char *loc, int arg1, int arg2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3365 unsigned char *end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3366 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3367 REGISTER unsigned char *pfrom = end;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3368 REGISTER unsigned char *pto = end + 5;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3369
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3370 while (pfrom != loc)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3371 *--pto = *--pfrom;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3372
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3373 store_op2 (op, loc, arg1, arg2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3374 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3375
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3376
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3377 /* P points to just after a ^ in PATTERN. Return true if that ^ comes
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3378 after an alternative or a begin-subexpression. We assume there is at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3379 least one character before the ^. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3380
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3381 static re_bool
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3382 at_begline_loc_p (re_char *pattern, re_char *p, reg_syntax_t syntax)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3383 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3384 re_char *prev = p - 2;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3385 re_bool prev_prev_backslash = prev > pattern && prev[-1] == '\\';
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3386
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3387 return
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3388 /* After a subexpression? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3389 (*prev == '(' && (syntax & RE_NO_BK_PARENS || prev_prev_backslash))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3390 /* After an alternative? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3391 || (*prev == '|' && (syntax & RE_NO_BK_VBAR || prev_prev_backslash));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3392 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3393
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3394
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3395 /* The dual of at_begline_loc_p. This one is for $. We assume there is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3396 at least one character after the $, i.e., `P < PEND'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3397
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3398 static re_bool
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3399 at_endline_loc_p (re_char *p, re_char *pend, int syntax)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3400 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3401 re_char *next = p;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3402 re_bool next_backslash = *next == '\\';
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3403 re_char *next_next = p + 1 < pend ? p + 1 : 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3404
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3405 return
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3406 /* Before a subexpression? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3407 (syntax & RE_NO_BK_PARENS ? *next == ')'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3408 : next_backslash && next_next && *next_next == ')')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3409 /* Before an alternative? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3410 || (syntax & RE_NO_BK_VBAR ? *next == '|'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3411 : next_backslash && next_next && *next_next == '|');
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3412 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3413
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3414
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3415 /* Returns true if REGNUM is in one of COMPILE_STACK's elements and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3416 false if it's not. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3417
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3418 static re_bool
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3419 group_in_compile_stack (compile_stack_type compile_stack, regnum_t regnum)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3420 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3421 int this_element;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3422
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3423 for (this_element = compile_stack.avail - 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3424 this_element >= 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3425 this_element--)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3426 if (compile_stack.stack[this_element].regnum == regnum)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3427 return true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3429 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3430 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3431
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3432
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3433 /* Read the ending character of a range (in a bracket expression) from the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3434 uncompiled pattern *P_PTR (which ends at PEND). We assume the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3435 starting character is in `P[-2]'. (`P[-1]' is the character `-'.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3436 Then we set the translation of all bits between the starting and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3437 ending characters (inclusive) in the compiled pattern B.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3438
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3439 Return an error code.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3440
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3441 We use these short variable names so we can use the same macros as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3442 `regex_compile' itself. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3443
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3444 static reg_errcode_t
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3445 compile_range (re_char **p_ptr, re_char *pend, RE_TRANSLATE_TYPE translate,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3446 reg_syntax_t syntax, unsigned char *buf_end)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3447 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
3448 Emchar this_char;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3449
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3450 re_char *p = *p_ptr;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3451 int range_start, range_end;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3452
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3453 if (p == pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3454 return REG_ERANGE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3455
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3456 /* Even though the pattern is a signed `char *', we need to fetch
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3457 with unsigned char *'s; if the high bit of the pattern character
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3458 is set, the range endpoints will be negative if we fetch using a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3459 signed char *.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3460
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3461 We also want to fetch the endpoints without translating them; the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3462 appropriate translation is done in the bit-setting loop below. */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3463 /* The SVR4 compiler on the 3B2 had trouble with unsigned const char *. */
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3464 range_start = ((const unsigned char *) p)[-2];
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
3465 range_end = ((const unsigned char *) p)[0];
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3466
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3467 /* Have to increment the pointer into the pattern string, so the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3468 caller isn't still at the ending character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3469 (*p_ptr)++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3470
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3471 /* If the start is after the end, the range is empty. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3472 if (range_start > range_end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3473 return syntax & RE_NO_EMPTY_RANGES ? REG_ERANGE : REG_NOERROR;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3474
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3475 /* Here we see why `this_char' has to be larger than an `unsigned
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3476 char' -- the range is inclusive, so if `range_end' == 0xff
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3477 (assuming 8-bit characters), we would otherwise go into an infinite
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3478 loop, since all characters <= 0xff. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3479 for (this_char = range_start; this_char <= range_end; this_char++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3480 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3481 SET_LIST_BIT (TRANSLATE (this_char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3482 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3483
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3484 return REG_NOERROR;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3485 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3486
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3487 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3488
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3489 static reg_errcode_t
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3490 compile_extended_range (re_char **p_ptr, re_char *pend,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3491 RE_TRANSLATE_TYPE translate,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3492 reg_syntax_t syntax, Lisp_Object rtab)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3493 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3494 Emchar this_char, range_start, range_end;
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
3495 const Intbyte *p;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3496
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3497 if (*p_ptr == pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3498 return REG_ERANGE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3499
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
3500 p = (const Intbyte *) *p_ptr;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3501 range_end = charptr_emchar (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3502 p--; /* back to '-' */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3503 DEC_CHARPTR (p); /* back to start of range */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3504 /* We also want to fetch the endpoints without translating them; the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3505 appropriate translation is done in the bit-setting loop below. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3506 range_start = charptr_emchar (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3507 INC_CHARPTR (*p_ptr);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3508
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3509 /* If the start is after the end, the range is empty. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3510 if (range_start > range_end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3511 return syntax & RE_NO_EMPTY_RANGES ? REG_ERANGE : REG_NOERROR;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3512
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3513 /* Can't have ranges spanning different charsets, except maybe for
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3514 ranges entirely within the first 256 chars. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3515
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3516 if ((range_start >= 0x100 || range_end >= 0x100)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3517 && CHAR_LEADING_BYTE (range_start) !=
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3518 CHAR_LEADING_BYTE (range_end))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3519 return REG_ERANGESPAN;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3520
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3521 /* As advertised, translations only work over the 0 - 0x7F range.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3522 Making this kind of stuff work generally is much harder.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3523 Iterating over the whole range like this would be way efficient
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3524 if the range encompasses 10,000 chars or something. You'd have
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3525 to do something like this:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3526
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3527 range_table a;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3528 range_table b;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3529 map over translation table in [range_start, range_end] of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3530 (put the mapped range in a;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3531 put the translation in b)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3532 invert the range in a and truncate to [range_start, range_end]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3533 compute the union of a, b
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3534 union the result into rtab
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3535 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3536 for (this_char = range_start;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3537 this_char <= range_end && this_char < 0x80; this_char++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3538 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3539 SET_RANGETAB_BIT (TRANSLATE (this_char));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3540 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3541
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3542 if (this_char <= range_end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3543 put_range_table (rtab, this_char, range_end, Qt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3544
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3545 return REG_NOERROR;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3546 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3547
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3548 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3549
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3550 /* re_compile_fastmap computes a ``fastmap'' for the compiled pattern in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3551 BUFP. A fastmap records which of the (1 << BYTEWIDTH) possible
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3552 characters can start a string that matches the pattern. This fastmap
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3553 is used by re_search to skip quickly over impossible starting points.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3554
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3555 The caller must supply the address of a (1 << BYTEWIDTH)-byte data
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3556 area as BUFP->fastmap.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3557
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3558 We set the `fastmap', `fastmap_accurate', and `can_be_null' fields in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3559 the pattern buffer.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3560
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3561 Returns 0 if we succeed, -2 if an internal error. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3562
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3563 int
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3564 re_compile_fastmap (struct re_pattern_buffer *bufp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3565 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3566 int j, k;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3567 #ifdef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3568 fail_stack_type fail_stack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3569 #endif
456
e7ef97881643 Import from CVS: tag r21-2-43
cvs
parents: 450
diff changeset
3570 DECLARE_DESTINATION;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3571 /* We don't push any register information onto the failure stack. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3572
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3573 REGISTER char *fastmap = bufp->fastmap;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3574 unsigned char *pattern = bufp->buffer;
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
3575 long size = bufp->used;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3576 unsigned char *p = pattern;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3577 REGISTER unsigned char *pend = pattern + size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3578
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
3579 #ifdef REGEX_REL_ALLOC
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3580 /* This holds the pointer to the failure stack, when
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3581 it is allocated relocatably. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3582 fail_stack_elt_t *failure_stack_ptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3583 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3584
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3585 /* Assume that each path through the pattern can be null until
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3586 proven otherwise. We set this false at the bottom of switch
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3587 statement, to which we get only if a particular path doesn't
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3588 match the empty string. */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3589 re_bool path_can_be_null = true;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3590
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3591 /* We aren't doing a `succeed_n' to begin with. */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3592 re_bool succeed_n_p = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3593
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3594 assert (fastmap != NULL && p != NULL);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3595
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3596 INIT_FAIL_STACK ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3597 memset (fastmap, 0, 1 << BYTEWIDTH); /* Assume nothing's valid. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3598 bufp->fastmap_accurate = 1; /* It will be when we're done. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3599 bufp->can_be_null = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3600
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3601 while (1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3602 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3603 if (p == pend || *p == succeed)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3604 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3605 /* We have reached the (effective) end of pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3606 if (!FAIL_STACK_EMPTY ())
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3607 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3608 bufp->can_be_null |= path_can_be_null;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3609
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3610 /* Reset for next path. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3611 path_can_be_null = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3612
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3613 p = (unsigned char *) fail_stack.stack[--fail_stack.avail].pointer;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3614
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3615 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3616 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3617 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3618 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3619 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3620
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3621 /* We should never be about to go beyond the end of the pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3622 assert (p < pend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3623
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3624 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3625 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3626
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3627 /* I guess the idea here is to simply not bother with a fastmap
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3628 if a backreference is used, since it's too hard to figure out
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3629 the fastmap for the corresponding group. Setting
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3630 `can_be_null' stops `re_search_2' from using the fastmap, so
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3631 that is all we do. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3632 case duplicate:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3633 bufp->can_be_null = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3634 goto done;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3635
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3636
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3637 /* Following are the cases which match a character. These end
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3638 with `break'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3639
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3640 case exactn:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3641 fastmap[p[1]] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3642 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3643
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3644
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3645 case charset:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3646 /* XEmacs: Under Mule, these bit vectors will
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3647 only contain values for characters below 0x80. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3648 for (j = *p++ * BYTEWIDTH - 1; j >= 0; j--)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3649 if (p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3650 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3651 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3652
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3653
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3654 case charset_not:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3655 /* Chars beyond end of map must be allowed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3656 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3657 for (j = *p * BYTEWIDTH; j < 0x80; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3658 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3659 /* And all extended characters must be allowed, too. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3660 for (j = 0x80; j < 0xA0; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3661 fastmap[j] = 1;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3662 #else /* not MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3663 for (j = *p * BYTEWIDTH; j < (1 << BYTEWIDTH); j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3664 fastmap[j] = 1;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3665 #endif /* MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3666
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3667 for (j = *p++ * BYTEWIDTH - 1; j >= 0; j--)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3668 if (!(p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3669 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3670 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3671
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3672 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3673 case charset_mule:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3674 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3675 int nentries;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3676 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3677
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3678 nentries = unified_range_table_nentries (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3679 for (i = 0; i < nentries; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3680 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3681 EMACS_INT first, last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3682 Lisp_Object dummy_val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3683 int jj;
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
3684 Intbyte strr[MAX_EMCHAR_LEN];
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3685
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3686 unified_range_table_get_range (p, i, &first, &last,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3687 &dummy_val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3688 for (jj = first; jj <= last && jj < 0x80; jj++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3689 fastmap[jj] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3690 /* Ranges below 0x100 can span charsets, but there
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3691 are only two (Control-1 and Latin-1), and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3692 either first or last has to be in them. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3693 set_charptr_emchar (strr, first);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3694 fastmap[*strr] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3695 if (last < 0x100)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3696 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3697 set_charptr_emchar (strr, last);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3698 fastmap[*strr] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3699 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3700 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3701 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3702 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3703
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3704 case charset_mule_not:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3705 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3706 int nentries;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3707 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3708
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3709 nentries = unified_range_table_nentries (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3710 for (i = 0; i < nentries; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3711 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3712 EMACS_INT first, last;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3713 Lisp_Object dummy_val;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3714 int jj;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3715 int smallest_prev = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3716
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3717 unified_range_table_get_range (p, i, &first, &last,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3718 &dummy_val);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3719 for (jj = smallest_prev; jj < first && jj < 0x80; jj++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3720 fastmap[jj] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3721 smallest_prev = last + 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3722 if (smallest_prev >= 0x80)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3723 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3724 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3725 /* Calculating which leading bytes are actually allowed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3726 here is rather difficult, so we just punt and allow
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3727 all of them. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3728 for (i = 0x80; i < 0xA0; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3729 fastmap[i] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3730 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3731 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3732 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3733
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3734
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3735 case wordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3736 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3737 k = (int) Sword;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3738 goto matchsyntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3739 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3740 for (j = 0; j < (1 << BYTEWIDTH); j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3741 if (SYNTAX_UNSAFE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3742 (XCHAR_TABLE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3743 (regex_emacs_buffer->mirror_syntax_table), j) == Sword)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3744 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3745 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3746 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3747
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3748
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3749 case notwordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3750 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3751 k = (int) Sword;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3752 goto matchnotsyntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3753 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3754 for (j = 0; j < (1 << BYTEWIDTH); j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3755 if (SYNTAX_UNSAFE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3756 (XCHAR_TABLE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3757 (regex_emacs_buffer->mirror_syntax_table), j) != Sword)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3758 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3759 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3760 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3761
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3762
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3763 case anychar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3764 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3765 int fastmap_newline = fastmap['\n'];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3766
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3767 /* `.' matches anything ... */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3768 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3769 /* "anything" only includes bytes that can be the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3770 first byte of a character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3771 for (j = 0; j < 0xA0; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3772 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3773 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3774 for (j = 0; j < (1 << BYTEWIDTH); j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3775 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3776 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3777
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3778 /* ... except perhaps newline. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3779 if (!(bufp->syntax & RE_DOT_NEWLINE))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3780 fastmap['\n'] = fastmap_newline;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3781
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3782 /* Return if we have already set `can_be_null'; if we have,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3783 then the fastmap is irrelevant. Something's wrong here. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3784 else if (bufp->can_be_null)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3785 goto done;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3786
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3787 /* Otherwise, have to check alternative paths. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3788 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3789 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3790
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3791 #ifdef emacs
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3792 case wordbound:
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3793 case notwordbound:
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3794 case wordbeg:
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3795 case wordend:
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3796 case notsyntaxspec:
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3797 case syntaxspec:
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3798 /* This match depends on text properties. These end with
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3799 aborting optimizations. */
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3800 bufp->can_be_null = 1;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3801 goto done;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3802
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3803 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3804 #if 0 /* Removed during syntax-table properties patch -- 2000/12/07 mct */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3805 case syntaxspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3806 k = *p++;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3807 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3808 matchsyntax:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3809 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3810 for (j = 0; j < 0x80; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3811 if (SYNTAX_UNSAFE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3812 (XCHAR_TABLE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3813 (regex_emacs_buffer->mirror_syntax_table), j) ==
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3814 (enum syntaxcode) k)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3815 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3816 for (j = 0x80; j < 0xA0; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3817 {
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
3818 if (LEADING_BYTE_PREFIX_P((unsigned char) j))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3819 /* too complicated to calculate this right */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3820 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3821 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3822 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3823 int multi_p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3824 Lisp_Object cset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3825
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3826 cset = CHARSET_BY_LEADING_BYTE (j);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3827 if (CHARSETP (cset))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3828 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3829 if (charset_syntax (regex_emacs_buffer, cset,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3830 &multi_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3831 == Sword || multi_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3832 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3833 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3834 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3835 }
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3836 #else /* not MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3837 for (j = 0; j < (1 << BYTEWIDTH); j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3838 if (SYNTAX_UNSAFE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3839 (XCHAR_TABLE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3840 (regex_emacs_buffer->mirror_syntax_table), j) ==
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3841 (enum syntaxcode) k)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3842 fastmap[j] = 1;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3843 #endif /* MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3844 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3845
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3846
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3847 #if 0 /* Removed during syntax-table properties patch -- 2000/12/07 mct */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3848 case notsyntaxspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3849 k = *p++;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3850 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3851 matchnotsyntax:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3852 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3853 for (j = 0; j < 0x80; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3854 if (SYNTAX_UNSAFE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3855 (XCHAR_TABLE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3856 (regex_emacs_buffer->mirror_syntax_table), j) !=
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3857 (enum syntaxcode) k)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3858 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3859 for (j = 0x80; j < 0xA0; j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3860 {
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
3861 if (LEADING_BYTE_PREFIX_P((unsigned char) j))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3862 /* too complicated to calculate this right */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3863 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3864 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3865 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3866 int multi_p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3867 Lisp_Object cset;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3868
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3869 cset = CHARSET_BY_LEADING_BYTE (j);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3870 if (CHARSETP (cset))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3871 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3872 if (charset_syntax (regex_emacs_buffer, cset,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3873 &multi_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3874 != Sword || multi_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3875 fastmap[j] = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3876 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3877 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3878 }
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3879 #else /* not MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3880 for (j = 0; j < (1 << BYTEWIDTH); j++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3881 if (SYNTAX_UNSAFE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3882 (XCHAR_TABLE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3883 (regex_emacs_buffer->mirror_syntax_table), j) !=
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3884 (enum syntaxcode) k)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3885 fastmap[j] = 1;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
3886 #endif /* MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3887 break;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3888 #endif /* emacs */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3889
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3890 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3891 /* 97/2/17 jhod category patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3892 case categoryspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3893 case notcategoryspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3894 bufp->can_be_null = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3895 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3896 /* end if category patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3897 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3898
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3899 /* All cases after this match the empty string. These end with
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3900 `continue'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3901
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3902
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3903 case before_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3904 case at_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3905 case after_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3906 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3907 #endif /* not emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3908
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3909
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3910 case no_op:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3911 case begline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3912 case endline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3913 case begbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3914 case endbuf:
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3915 #ifndef emacs
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3916 case wordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3917 case notwordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3918 case wordbeg:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3919 case wordend:
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
3920 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3921 case push_dummy_failure:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3922 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3923
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3924
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3925 case jump_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3926 case pop_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3927 case maybe_pop_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3928 case jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3929 case jump_past_alt:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3930 case dummy_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3931 EXTRACT_NUMBER_AND_INCR (j, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3932 p += j;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3933 if (j > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3934 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3935
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3936 /* Jump backward implies we just went through the body of a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3937 loop and matched nothing. Opcode jumped to should be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3938 `on_failure_jump' or `succeed_n'. Just treat it like an
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3939 ordinary jump. For a * loop, it has pushed its failure
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3940 point already; if so, discard that as redundant. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3941 if ((re_opcode_t) *p != on_failure_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3942 && (re_opcode_t) *p != succeed_n)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3943 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3944
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3945 p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3946 EXTRACT_NUMBER_AND_INCR (j, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3947 p += j;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3948
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3949 /* If what's on the stack is where we are now, pop it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3950 if (!FAIL_STACK_EMPTY ()
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3951 && fail_stack.stack[fail_stack.avail - 1].pointer == p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3952 fail_stack.avail--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3953
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3954 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3955
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3956
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3957 case on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3958 case on_failure_keep_string_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3959 handle_on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3960 EXTRACT_NUMBER_AND_INCR (j, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3961
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3962 /* For some patterns, e.g., `(a?)?', `p+j' here points to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3963 end of the pattern. We don't want to push such a point,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3964 since when we restore it above, entering the switch will
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3965 increment `p' past the end of the pattern. We don't need
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3966 to push such a point since we obviously won't find any more
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3967 fastmap entries beyond `pend'. Such a pattern can match
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3968 the null string, though. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3969 if (p + j < pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3970 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3971 if (!PUSH_PATTERN_OP (p + j, fail_stack))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3972 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3973 RESET_FAIL_STACK ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3974 return -2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3975 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3976 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3977 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3978 bufp->can_be_null = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3979
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3980 if (succeed_n_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3981 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3982 EXTRACT_NUMBER_AND_INCR (k, p); /* Skip the n. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3983 succeed_n_p = false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3984 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3985
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3986 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3987
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3988
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3989 case succeed_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3990 /* Get to the number of times to succeed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3991 p += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3992
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3993 /* Increment p past the n for when k != 0. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3994 EXTRACT_NUMBER_AND_INCR (k, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3995 if (k == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3996 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3997 p -= 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3998 succeed_n_p = true; /* Spaghetti code alert. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3999 goto handle_on_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4000 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4001 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4002
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4003
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4004 case set_number_at:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4005 p += 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4006 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4007
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4008
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4009 case start_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4010 case stop_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4011 p += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4012 continue;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4013
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4014
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4015 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4016 abort (); /* We have listed all the cases. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4017 } /* switch *p++ */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4018
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4019 /* Getting here means we have found the possible starting
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4020 characters for one path of the pattern -- and that the empty
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4021 string does not match. We need not follow this path further.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4022 Instead, look at the next alternative (remembered on the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4023 stack), or quit if no more. The test at the top of the loop
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4024 does these things. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4025 path_can_be_null = false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4026 p = pend;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4027 } /* while p */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4028
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4029 /* Set `can_be_null' for the last path (also the first path, if the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4030 pattern is empty). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4031 bufp->can_be_null |= path_can_be_null;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4032
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4033 done:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4034 RESET_FAIL_STACK ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4035 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4036 } /* re_compile_fastmap */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4037
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4038 /* Set REGS to hold NUM_REGS registers, storing them in STARTS and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4039 ENDS. Subsequent matches using PATTERN_BUFFER and REGS will use
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4040 this memory for recording register information. STARTS and ENDS
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4041 must be allocated using the malloc library routine, and must each
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4042 be at least NUM_REGS * sizeof (regoff_t) bytes long.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4043
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4044 If NUM_REGS == 0, then subsequent matches should allocate their own
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4045 register data.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4046
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4047 Unless this function is called, the first search or match using
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4048 PATTERN_BUFFER will allocate its own register data, without
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4049 freeing the old data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4050
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4051 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4052 re_set_registers (struct re_pattern_buffer *bufp, struct re_registers *regs,
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4053 int num_regs, regoff_t *starts, regoff_t *ends)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4054 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4055 if (num_regs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4056 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4057 bufp->regs_allocated = REGS_REALLOCATE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4058 regs->num_regs = num_regs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4059 regs->start = starts;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4060 regs->end = ends;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4061 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4062 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4063 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4064 bufp->regs_allocated = REGS_UNALLOCATED;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4065 regs->num_regs = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4066 regs->start = regs->end = (regoff_t *) 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4067 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4068 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4069
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4070 /* Searching routines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4071
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4072 /* Like re_search_2, below, but only one string is specified, and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4073 doesn't let you say where to stop matching. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4074
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4075 int
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4076 re_search (struct re_pattern_buffer *bufp, const char *string, int size,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4077 int startpos, int range, struct re_registers *regs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4078 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4079 return re_search_2 (bufp, NULL, 0, string, size, startpos, range,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4080 regs, size);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4081 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4082
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4083 #ifndef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4084 /* Snarfed from src/lisp.h, needed for compiling [ce]tags. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4085 # define bytecount_to_charcount(ptr, len) (len)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4086 # define charcount_to_bytecount(ptr, len) (len)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4087 typedef int Charcount;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4088 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4089
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4090 /* Using the compiled pattern in BUFP->buffer, first tries to match the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4091 virtual concatenation of STRING1 and STRING2, starting first at index
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4092 STARTPOS, then at STARTPOS + 1, and so on.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4093
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4094 With MULE, STARTPOS is a byte position, not a char position. And the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4095 search will increment STARTPOS by the width of the current leading
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4096 character.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4097
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4098 STRING1 and STRING2 have length SIZE1 and SIZE2, respectively.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4099
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4100 RANGE is how far to scan while trying to match. RANGE = 0 means try
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4101 only at STARTPOS; in general, the last start tried is STARTPOS +
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4102 RANGE.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4103
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4104 With MULE, RANGE is a byte position, not a char position. The last
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4105 start tried is the character starting <= STARTPOS + RANGE.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4106
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4107 In REGS, return the indices of the virtual concatenation of STRING1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4108 and STRING2 that matched the entire BUFP->buffer and its contained
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4109 subexpressions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4110
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4111 Do not consider matching one past the index STOP in the virtual
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4112 concatenation of STRING1 and STRING2.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4113
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4114 We return either the position in the strings at which the match was
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4115 found, -1 if no match, or -2 if error (such as failure
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4116 stack overflow). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4117
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4118 int
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4119 re_search_2 (struct re_pattern_buffer *bufp, const char *str1,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4120 int size1, const char *str2, int size2, int startpos,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4121 int range, struct re_registers *regs, int stop)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4122 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4123 int val;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4124 re_char *string1 = (re_char *) str1;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4125 re_char *string2 = (re_char *) str2;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4126 REGISTER char *fastmap = bufp->fastmap;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4127 REGISTER RE_TRANSLATE_TYPE translate = bufp->translate;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4128 int total_size = size1 + size2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4129 int endpos = startpos + range;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4130 #ifdef REGEX_BEGLINE_CHECK
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4131 int anchored_at_begline = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4132 #endif
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4133 re_char *d;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4134 Charcount d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4135
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4136 /* Check for out-of-range STARTPOS. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4137 if (startpos < 0 || startpos > total_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4138 return -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4139
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4140 /* Fix up RANGE if it might eventually take us outside
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4141 the virtual concatenation of STRING1 and STRING2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4142 if (endpos < 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4143 range = 0 - startpos;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4144 else if (endpos > total_size)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4145 range = total_size - startpos;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4146
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4147 /* If the search isn't to be a backwards one, don't waste time in a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4148 search for a pattern that must be anchored. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4149 if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == begbuf && range > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4150 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4151 if (startpos > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4152 return -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4153 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4154 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4155 d = ((const unsigned char *)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4156 (startpos >= size1 ? string2 - size1 : string1) + startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4157 range = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4158 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4159 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4160
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4161 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4162 /* In a forward search for something that starts with \=.
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4163 don't keep searching past point. */
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4164 if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == at_dot && range > 0)
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4165 {
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4166 range = BUF_PT (regex_emacs_buffer) - BUF_BEGV (regex_emacs_buffer)
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4167 - startpos;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4168 if (range < 0)
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4169 return -1;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4170 }
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4171 #endif /* emacs */
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4172
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4173 /* Update the fastmap now if not correct already. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4174 if (fastmap && !bufp->fastmap_accurate)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4175 if (re_compile_fastmap (bufp) == -2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4176 return -2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4177
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4178 #ifdef REGEX_BEGLINE_CHECK
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4179 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4180 long i = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4181
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4182 while (i < bufp->used)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4183 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4184 if (bufp->buffer[i] == start_memory ||
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4185 bufp->buffer[i] == stop_memory)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4186 i += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4187 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4188 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4189 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4190 anchored_at_begline = i < bufp->used && bufp->buffer[i] == begline;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4191 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4192 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4193
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4194 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4195 SETUP_SYNTAX_CACHE_FOR_OBJECT (regex_match_object,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4196 regex_emacs_buffer,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4197 SYNTAX_CACHE_OBJECT_BYTE_TO_CHAR (regex_match_object,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4198 regex_emacs_buffer,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4199 startpos),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4200 1);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4201 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4202
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4203 /* Loop through the string, looking for a place to start matching. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4204 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4205 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4206 #ifdef REGEX_BEGLINE_CHECK
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4207 /* If the regex is anchored at the beginning of a line (i.e. with a ^),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4208 then we can speed things up by skipping to the next beginning-of-
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4209 line. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4210 if (anchored_at_begline && startpos > 0 && startpos != size1 &&
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4211 range > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4212 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4213 /* whose stupid idea was it anyway to make this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4214 function take two strings to match?? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4215 int lim = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4216 int irange = range;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4217
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4218 if (startpos < size1 && startpos + range >= size1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4219 lim = range - (size1 - startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4220
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4221 d = ((const unsigned char *)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4222 (startpos >= size1 ? string2 - size1 : string1) + startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4223 DEC_CHARPTR(d); /* Ok, since startpos != size1. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4224 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4225
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4226 if (TRANSLATE_P (translate))
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4227 while (range > lim && *d != '\n')
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4228 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4229 d += d_size; /* Speedier INC_CHARPTR(d) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4230 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4231 range -= d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4232 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4233 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4234 while (range > lim && *d != '\n')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4235 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4236 d += d_size; /* Speedier INC_CHARPTR(d) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4237 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4238 range -= d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4239 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4240
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4241 startpos += irange - range;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4242 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4243 #endif /* REGEX_BEGLINE_CHECK */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4244
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4245 /* If a fastmap is supplied, skip quickly over characters that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4246 cannot be the start of a match. If the pattern can match the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4247 null string, however, we don't need to skip characters; we want
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4248 the first null string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4249 if (fastmap && startpos < total_size && !bufp->can_be_null)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4250 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4251 if (range > 0) /* Searching forwards. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4252 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4253 int lim = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4254 int irange = range;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4255
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4256 if (startpos < size1 && startpos + range >= size1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4257 lim = range - (size1 - startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4258
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4259 d = ((const unsigned char *)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4260 (startpos >= size1 ? string2 - size1 : string1) + startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4261
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4262 /* Written out as an if-else to avoid testing `translate'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4263 inside the loop. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4264 if (TRANSLATE_P (translate))
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4265 while (range > lim)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4266 {
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4267 #ifdef MULE
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4268 Emchar buf_ch;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4269
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4270 buf_ch = charptr_emchar (d);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4271 buf_ch = RE_TRANSLATE (buf_ch);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4272 if (buf_ch >= 0200 || fastmap[(unsigned char) buf_ch])
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4273 break;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4274 #else
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4275 if (fastmap[(unsigned char)RE_TRANSLATE (*d)])
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4276 break;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4277 #endif /* MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4278 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4279 range -= d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4280 d += d_size; /* Speedier INC_CHARPTR(d) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4281 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4282 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4283 while (range > lim && !fastmap[*d])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4284 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4285 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4286 range -= d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4287 d += d_size; /* Speedier INC_CHARPTR(d) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4288 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4289
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4290 startpos += irange - range;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4291 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4292 else /* Searching backwards. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4293 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4294 Emchar c = (size1 == 0 || startpos >= size1
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4295 ? charptr_emchar (string2 + startpos - size1)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4296 : charptr_emchar (string1 + startpos));
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4297 c = TRANSLATE (c);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4298 #ifdef MULE
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4299 if (!(c >= 0200 || fastmap[(unsigned char) c]))
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4300 goto advance;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4301 #else
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4302 if (!fastmap[(unsigned char) c])
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4303 goto advance;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4304 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4305 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4306 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4307
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4308 /* If can't match the null string, and that's all we have left, fail. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4309 if (range >= 0 && startpos == total_size && fastmap
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4310 && !bufp->can_be_null)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4311 return -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4312
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4313 #ifdef emacs /* XEmacs added, w/removal of immediate_quit */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4314 if (!no_quit_in_re_search)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4315 QUIT;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4316 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4317 val = re_match_2_internal (bufp, string1, size1, string2, size2,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4318 startpos, regs, stop);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4319 #ifndef REGEX_MALLOC
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4320 #ifdef C_ALLOCA
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4321 alloca (0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4322 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4323 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4324
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4325 if (val >= 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4326 return startpos;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4327
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4328 if (val == -2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4329 return -2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4330
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4331 advance:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4332 if (!range)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4333 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4334 else if (range > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4335 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4336 d = ((const unsigned char *)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4337 (startpos >= size1 ? string2 - size1 : string1) + startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4338 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4339 range -= d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4340 startpos += d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4341 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4342 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4343 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4344 /* Note startpos > size1 not >=. If we are on the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4345 string1/string2 boundary, we want to backup into string1. */
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4346 d = ((const unsigned char *)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4347 (startpos > size1 ? string2 - size1 : string1) + startpos);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4348 DEC_CHARPTR(d);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4349 d_size = charcount_to_bytecount (d, 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4350 range += d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4351 startpos -= d_size;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4352 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4353 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4354 return -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4355 } /* re_search_2 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4356
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4357 /* Declarations and macros for re_match_2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4358
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4359 /* This converts PTR, a pointer into one of the search strings `string1'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4360 and `string2' into an offset from the beginning of that string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4361 #define POINTER_TO_OFFSET(ptr) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4362 (FIRST_STRING_P (ptr) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4363 ? ((regoff_t) ((ptr) - string1)) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4364 : ((regoff_t) ((ptr) - string2 + size1)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4365
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4366 /* Macros for dealing with the split strings in re_match_2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4367
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4368 #define MATCHING_IN_FIRST_STRING (dend == end_match_1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4369
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4370 /* Call before fetching a character with *d. This switches over to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4371 string2 if necessary. */
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
4372 #define REGEX_PREFETCH() \
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4373 while (d == dend) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4374 { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4375 /* End of string2 => fail. */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4376 if (dend == end_match_2) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4377 goto fail; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4378 /* End of string1 => advance to string2. */ \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4379 d = string2; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4380 dend = end_match_2; \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4381 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4382
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4383
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4384 /* Test if at very beginning or at very end of the virtual concatenation
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4385 of `string1' and `string2'. If only one string, it's `string2'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4386 #define AT_STRINGS_BEG(d) ((d) == (size1 ? string1 : string2) || !size2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4387 #define AT_STRINGS_END(d) ((d) == end2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4388
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4389 /* XEmacs change:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4390 If the given position straddles the string gap, return the equivalent
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4391 position that is before or after the gap, respectively; otherwise,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4392 return the same position. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4393 #define POS_BEFORE_GAP_UNSAFE(d) ((d) == string2 ? end1 : (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4394 #define POS_AFTER_GAP_UNSAFE(d) ((d) == end1 ? string2 : (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4395
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4396 /* Test if CH is a word-constituent character. (XEmacs change) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4397 #define WORDCHAR_P_UNSAFE(ch) \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4398 (SYNTAX_UNSAFE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table), \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4399 ch) == Sword)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4400
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4401 /* Free everything we malloc. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4402 #ifdef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4403 #define FREE_VAR(var) if (var) REGEX_FREE (var); var = NULL
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4404 #define FREE_VARIABLES() \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4405 do { \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4406 REGEX_FREE_STACK (fail_stack.stack); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4407 FREE_VAR (regstart); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4408 FREE_VAR (regend); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4409 FREE_VAR (old_regstart); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4410 FREE_VAR (old_regend); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4411 FREE_VAR (best_regstart); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4412 FREE_VAR (best_regend); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4413 FREE_VAR (reg_info); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4414 FREE_VAR (reg_dummy); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4415 FREE_VAR (reg_info_dummy); \
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4416 } while (0)
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4417 #else /* not MATCH_MAY_ALLOCATE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4418 #define FREE_VARIABLES() ((void)0) /* Do nothing! But inhibit gcc warning. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4419 #endif /* MATCH_MAY_ALLOCATE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4420
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4421 /* These values must meet several constraints. They must not be valid
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4422 register values; since we have a limit of 255 registers (because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4423 we use only one byte in the pattern for the register number), we can
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4424 use numbers larger than 255. They must differ by 1, because of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4425 NUM_FAILURE_ITEMS above. And the value for the lowest register must
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4426 be larger than the value for the highest register, so we do not try
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4427 to actually save any registers when none are active. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4428 #define NO_HIGHEST_ACTIVE_REG (1 << BYTEWIDTH)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4429 #define NO_LOWEST_ACTIVE_REG (NO_HIGHEST_ACTIVE_REG + 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4430
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4431 /* Matching routines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4432
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4433 #ifndef emacs /* Emacs never uses this. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4434 /* re_match is like re_match_2 except it takes only a single string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4435
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4436 int
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4437 re_match (struct re_pattern_buffer *bufp, const char *string, int size,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4438 int pos, struct re_registers *regs)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4439 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4440 int result = re_match_2_internal (bufp, NULL, 0, (re_char *) string, size,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4441 pos, regs, size);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4442 alloca (0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4443 return result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4444 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4445 #endif /* not emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4446
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4447
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4448 /* re_match_2 matches the compiled pattern in BUFP against the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4449 (virtual) concatenation of STRING1 and STRING2 (of length SIZE1 and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4450 SIZE2, respectively). We start matching at POS, and stop matching
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4451 at STOP.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4452
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4453 If REGS is non-null and the `no_sub' field of BUFP is nonzero, we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4454 store offsets for the substring each group matched in REGS. See the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4455 documentation for exactly how many groups we fill.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4456
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4457 We return -1 if no match, -2 if an internal error (such as the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4458 failure stack overflowing). Otherwise, we return the length of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4459 matched substring. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4460
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4461 int
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4462 re_match_2 (struct re_pattern_buffer *bufp, const char *string1,
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
4463 int size1, const char *string2, int size2, int pos,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4464 struct re_registers *regs, int stop)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4465 {
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4466 int result;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4467
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4468 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4469 SETUP_SYNTAX_CACHE_FOR_OBJECT (regex_match_object,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4470 regex_emacs_buffer,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4471 SYNTAX_CACHE_OBJECT_BYTE_TO_CHAR (regex_match_object,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4472 regex_emacs_buffer,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4473 pos),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4474 1);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4475 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4476
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4477 result = re_match_2_internal (bufp, (re_char *) string1, size1,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4478 (re_char *) string2, size2,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4479 pos, regs, stop);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4480
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4481 alloca (0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4482 return result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4483 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4484
800
a5954632b187 [xemacs-hg @ 2002-03-31 08:27:14 by ben]
ben
parents: 771
diff changeset
4485 #if defined (ERROR_CHECK_TEXT) && defined (emacs)
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4486 int in_re_match_2_internal;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4487
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4488 /* #### I am seeing an error (once) where regex_match_object gets set
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4489 to a string while matching on a buffer. The only way this seems
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4490 possible is recursive invocation of re_match_2_internal(). */
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4491 static Lisp_Object
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4492 restore_in_re_match_2_internal (Lisp_Object val)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4493 {
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4494 in_re_match_2_internal = 0;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4495 return Qnil;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4496 }
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4497
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4498 #define RESTORE_IN_MATCH_FLAG unbind_to (speccount)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4499
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4500 #else
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4501
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4502 #define RESTORE_IN_MATCH_FLAG do {} while (0)
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4503
800
a5954632b187 [xemacs-hg @ 2002-03-31 08:27:14 by ben]
ben
parents: 771
diff changeset
4504 #endif /* defined (ERROR_CHECK_TEXT) && defined (emacs) */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4505
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4506
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4507 /* This is a separate function so that we can force an alloca cleanup
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4508 afterwards. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4509 static int
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4510 re_match_2_internal (struct re_pattern_buffer *bufp, re_char *string1,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4511 int size1, re_char *string2, int size2, int pos,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4512 struct re_registers *regs, int stop)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4513 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4514 /* General temporaries. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4515 int mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4516 unsigned char *p1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4517 int should_succeed; /* XEmacs change */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4518
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4519 /* Just past the end of the corresponding string. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4520 re_char *end1, *end2;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4521
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4522 /* Pointers into string1 and string2, just past the last characters in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4523 each to consider matching. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4524 re_char *end_match_1, *end_match_2;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4525
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4526 /* Where we are in the data, and the end of the current string. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4527 re_char *d, *dend;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4528
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4529 /* Where we are in the pattern, and the end of the pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4530 unsigned char *p = bufp->buffer;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4531 REGISTER unsigned char *pend = p + bufp->used;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4532
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4533 /* Mark the opcode just after a start_memory, so we can test for an
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4534 empty subpattern when we get to the stop_memory. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4535 re_char *just_past_start_mem = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4536
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4537 /* We use this to map every character in the string. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4538 RE_TRANSLATE_TYPE translate = bufp->translate;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4539
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4540 /* Failure point stack. Each place that can handle a failure further
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4541 down the line pushes a failure point on this stack. It consists of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4542 restart, regend, and reg_info for all registers corresponding to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4543 the subexpressions we're currently inside, plus the number of such
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4544 registers, and, finally, two char *'s. The first char * is where
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4545 to resume scanning the pattern; the second one is where to resume
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4546 scanning the strings. If the latter is zero, the failure point is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4547 a ``dummy''; if a failure happens and the failure point is a dummy,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4548 it gets discarded and the next one is tried. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4549 #ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4550 fail_stack_type fail_stack;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4551 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4552 #ifdef DEBUG
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4553 static int failure_id;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4554 int nfailure_points_pushed = 0, nfailure_points_popped = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4555 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4556
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4557 #ifdef REGEX_REL_ALLOC
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4558 /* This holds the pointer to the failure stack, when
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4559 it is allocated relocatably. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4560 fail_stack_elt_t *failure_stack_ptr;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4561 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4562
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4563 /* We fill all the registers internally, independent of what we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4564 return, for use in backreferences. The number here includes
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4565 an element for register zero. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4566 int num_regs = bufp->re_ngroups + 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4567
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4568 /* The currently active registers. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4569 int lowest_active_reg = NO_LOWEST_ACTIVE_REG;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4570 int highest_active_reg = NO_HIGHEST_ACTIVE_REG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4571
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4572 /* Information on the contents of registers. These are pointers into
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4573 the input strings; they record just what was matched (on this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4574 attempt) by a subexpression part of the pattern, that is, the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4575 regnum-th regstart pointer points to where in the pattern we began
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4576 matching and the regnum-th regend points to right after where we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4577 stopped matching the regnum-th subexpression. (The zeroth register
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4578 keeps track of what the whole pattern matches.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4579 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4580 re_char **regstart, **regend;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4581 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4582
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4583 /* If a group that's operated upon by a repetition operator fails to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4584 match anything, then the register for its start will need to be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4585 restored because it will have been set to wherever in the string we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4586 are when we last see its open-group operator. Similarly for a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4587 register's end. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4588 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4589 re_char **old_regstart, **old_regend;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4590 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4591
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4592 /* The is_active field of reg_info helps us keep track of which (possibly
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4593 nested) subexpressions we are currently in. The matched_something
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4594 field of reg_info[reg_num] helps us tell whether or not we have
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4595 matched any of the pattern so far this time through the reg_num-th
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4596 subexpression. These two fields get reset each time through any
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4597 loop their register is in. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4598 #ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4599 register_info_type *reg_info;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4600 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4601
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4602 /* The following record the register info as found in the above
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4603 variables when we find a match better than any we've seen before.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4604 This happens as we backtrack through the failure points, which in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4605 turn happens only if we have not yet matched the entire string. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4606 int best_regs_set = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4607 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4608 re_char **best_regstart, **best_regend;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4609 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4610
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4611 /* Logically, this is `best_regend[0]'. But we don't want to have to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4612 allocate space for that if we're not allocating space for anything
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4613 else (see below). Also, we never need info about register 0 for
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4614 any of the other register vectors, and it seems rather a kludge to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4615 treat `best_regend' differently than the rest. So we keep track of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4616 the end of the best match so far in a separate variable. We
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4617 initialize this to NULL so that when we backtrack the first time
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4618 and need to test it, it's not garbage. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4619 re_char *match_end = NULL;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4620
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4621 /* This helps SET_REGS_MATCHED avoid doing redundant work. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4622 int set_regs_matched_done = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4623
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4624 /* Used when we pop values we don't care about. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4625 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4626 re_char **reg_dummy;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4627 register_info_type *reg_info_dummy;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4628 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4629
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4630 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4631 /* Counts the total number of registers pushed. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
4632 int num_regs_pushed = 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4633 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4634
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4635 /* 1 if this match ends in the same string (string1 or string2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4636 as the best previous match. */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4637 re_bool same_str_p;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4638
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4639 /* 1 if this match is the best seen so far. */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
4640 re_bool best_match_p;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4641
800
a5954632b187 [xemacs-hg @ 2002-03-31 08:27:14 by ben]
ben
parents: 771
diff changeset
4642 #if defined (ERROR_CHECK_TEXT) && defined (emacs)
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4643 int speccount = specpdl_depth ();
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4644
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4645 #if 0
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4646 /* we've hopefully fixed the reentrancy problem. */
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4647 assert (!in_re_match_2_internal);
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4648 #endif
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4649 in_re_match_2_internal = 1;
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4650 record_unwind_protect (restore_in_re_match_2_internal, Qnil);
800
a5954632b187 [xemacs-hg @ 2002-03-31 08:27:14 by ben]
ben
parents: 771
diff changeset
4651 #endif /* defined (ERROR_CHECK_TEXT) && defined (emacs) */
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4652
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4653 DEBUG_PRINT1 ("\n\nEntering re_match_2.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4654
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4655 INIT_FAIL_STACK ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4656
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4657 #ifdef MATCH_MAY_ALLOCATE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4658 /* Do not bother to initialize all the register variables if there are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4659 no groups in the pattern, as it takes a fair amount of time. If
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4660 there are groups, we include space for register 0 (the whole
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4661 pattern), even though we never use it, since it simplifies the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4662 array indexing. We should fix this. */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4663 if (bufp->re_ngroups)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4664 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4665 regstart = REGEX_TALLOC (num_regs, re_char *);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4666 regend = REGEX_TALLOC (num_regs, re_char *);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4667 old_regstart = REGEX_TALLOC (num_regs, re_char *);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4668 old_regend = REGEX_TALLOC (num_regs, re_char *);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4669 best_regstart = REGEX_TALLOC (num_regs, re_char *);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4670 best_regend = REGEX_TALLOC (num_regs, re_char *);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4671 reg_info = REGEX_TALLOC (num_regs, register_info_type);
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4672 reg_dummy = REGEX_TALLOC (num_regs, re_char *);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4673 reg_info_dummy = REGEX_TALLOC (num_regs, register_info_type);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4674
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4675 if (!(regstart && regend && old_regstart && old_regend && reg_info
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4676 && best_regstart && best_regend && reg_dummy && reg_info_dummy))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4677 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4678 FREE_VARIABLES ();
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4679 RESTORE_IN_MATCH_FLAG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4680 return -2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4681 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4682 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4683 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4684 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4685 /* We must initialize all our variables to NULL, so that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4686 `FREE_VARIABLES' doesn't try to free them. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4687 regstart = regend = old_regstart = old_regend = best_regstart
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4688 = best_regend = reg_dummy = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4689 reg_info = reg_info_dummy = (register_info_type *) NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4690 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4691 #endif /* MATCH_MAY_ALLOCATE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4692
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4693 /* The starting position is bogus. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4694 if (pos < 0 || pos > size1 + size2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4695 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4696 FREE_VARIABLES ();
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4697 RESTORE_IN_MATCH_FLAG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4698 return -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4699 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4700
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4701 /* Initialize subexpression text positions to -1 to mark ones that no
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4702 start_memory/stop_memory has been seen for. Also initialize the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4703 register information struct. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4704 for (mcnt = 1; mcnt < num_regs; mcnt++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4705 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4706 regstart[mcnt] = regend[mcnt]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4707 = old_regstart[mcnt] = old_regend[mcnt] = REG_UNSET_VALUE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4708
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4709 REG_MATCH_NULL_STRING_P (reg_info[mcnt]) = MATCH_NULL_UNSET_VALUE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4710 IS_ACTIVE (reg_info[mcnt]) = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4711 MATCHED_SOMETHING (reg_info[mcnt]) = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4712 EVER_MATCHED_SOMETHING (reg_info[mcnt]) = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4713 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4714 /* We move `string1' into `string2' if the latter's empty -- but not if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4715 `string1' is null. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4716 if (size2 == 0 && string1 != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4717 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4718 string2 = string1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4719 size2 = size1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4720 string1 = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4721 size1 = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4722 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4723 end1 = string1 + size1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4724 end2 = string2 + size2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4725
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4726 /* Compute where to stop matching, within the two strings. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4727 if (stop <= size1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4728 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4729 end_match_1 = string1 + stop;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4730 end_match_2 = string2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4731 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4732 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4733 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4734 end_match_1 = end1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4735 end_match_2 = string2 + stop - size1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4736 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4737
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4738 /* `p' scans through the pattern as `d' scans through the data.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4739 `dend' is the end of the input string that `d' points within. `d'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4740 is advanced into the following input string whenever necessary, but
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4741 this happens before fetching; therefore, at the beginning of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4742 loop, `d' can be pointing at the end of a string, but it cannot
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4743 equal `string2'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4744 if (size1 > 0 && pos <= size1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4745 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4746 d = string1 + pos;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4747 dend = end_match_1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4748 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4749 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4750 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4751 d = string2 + pos - size1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4752 dend = end_match_2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4753 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4754
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4755 DEBUG_PRINT1 ("The compiled pattern is: \n");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4756 DEBUG_PRINT_COMPILED_PATTERN (bufp, p, pend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4757 DEBUG_PRINT1 ("The string to match is: `");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4758 DEBUG_PRINT_DOUBLE_STRING (d, string1, size1, string2, size2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4759 DEBUG_PRINT1 ("'\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4760
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4761 /* This loops over pattern commands. It exits by returning from the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4762 function if the match is complete, or it drops through if the match
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4763 fails at this starting point in the input data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4764 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4765 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4766 DEBUG_PRINT2 ("\n0x%lx: ", (long) p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4767 #ifdef emacs /* XEmacs added, w/removal of immediate_quit */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4768 if (!no_quit_in_re_search)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4769 QUIT;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4770 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4771
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4772 if (p == pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4773 { /* End of pattern means we might have succeeded. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4774 DEBUG_PRINT1 ("end of pattern ... ");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4775
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4776 /* If we haven't matched the entire string, and we want the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4777 longest match, try backtracking. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4778 if (d != end_match_2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4779 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4780 same_str_p = (FIRST_STRING_P (match_end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4781 == MATCHING_IN_FIRST_STRING);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4782
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4783 /* AIX compiler got confused when this was combined
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4784 with the previous declaration. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4785 if (same_str_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4786 best_match_p = d > match_end;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4787 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4788 best_match_p = !MATCHING_IN_FIRST_STRING;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4789
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4790 DEBUG_PRINT1 ("backtracking.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4791
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4792 if (!FAIL_STACK_EMPTY ())
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4793 { /* More failure points to try. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4794
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4795 /* If exceeds best match so far, save it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4796 if (!best_regs_set || best_match_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4797 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4798 best_regs_set = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4799 match_end = d;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4800
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4801 DEBUG_PRINT1 ("\nSAVING match as best so far.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4802
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4803 for (mcnt = 1; mcnt < num_regs; mcnt++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4804 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4805 best_regstart[mcnt] = regstart[mcnt];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4806 best_regend[mcnt] = regend[mcnt];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4807 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4808 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4809 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4810 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4811
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4812 /* If no failure points, don't restore garbage. And if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4813 last match is real best match, don't restore second
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4814 best one. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4815 else if (best_regs_set && !best_match_p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4816 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4817 restore_best_regs:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4818 /* Restore best match. It may happen that `dend ==
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4819 end_match_1' while the restored d is in string2.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4820 For example, the pattern `x.*y.*z' against the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4821 strings `x-' and `y-z-', if the two strings are
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4822 not consecutive in memory. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4823 DEBUG_PRINT1 ("Restoring best registers.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4824
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4825 d = match_end;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4826 dend = ((d >= string1 && d <= end1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4827 ? end_match_1 : end_match_2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4828
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4829 for (mcnt = 1; mcnt < num_regs; mcnt++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4830 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4831 regstart[mcnt] = best_regstart[mcnt];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4832 regend[mcnt] = best_regend[mcnt];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4833 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4834 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4835 } /* d != end_match_2 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4836
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4837 succeed_label:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4838 DEBUG_PRINT1 ("Accepting match.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4839
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4840 /* If caller wants register contents data back, do it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4841 if (regs && !bufp->no_sub)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4842 {
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4843 int num_nonshy_regs = bufp->re_nsub + 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4844 /* Have the register data arrays been allocated? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4845 if (bufp->regs_allocated == REGS_UNALLOCATED)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4846 { /* No. So allocate them with malloc. We need one
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4847 extra element beyond `num_regs' for the `-1' marker
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4848 GNU code uses. */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4849 regs->num_regs = MAX (RE_NREGS, num_nonshy_regs + 1);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4850 regs->start = TALLOC (regs->num_regs, regoff_t);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4851 regs->end = TALLOC (regs->num_regs, regoff_t);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4852 if (regs->start == NULL || regs->end == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4853 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4854 FREE_VARIABLES ();
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4855 RESTORE_IN_MATCH_FLAG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4856 return -2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4857 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4858 bufp->regs_allocated = REGS_REALLOCATE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4859 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4860 else if (bufp->regs_allocated == REGS_REALLOCATE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4861 { /* Yes. If we need more elements than were already
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4862 allocated, reallocate them. If we need fewer, just
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4863 leave it alone. */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4864 if (regs->num_regs < num_nonshy_regs + 1)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4865 {
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4866 regs->num_regs = num_nonshy_regs + 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4867 RETALLOC (regs->start, regs->num_regs, regoff_t);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4868 RETALLOC (regs->end, regs->num_regs, regoff_t);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4869 if (regs->start == NULL || regs->end == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4870 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4871 FREE_VARIABLES ();
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4872 RESTORE_IN_MATCH_FLAG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4873 return -2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4874 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4875 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4876 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4877 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4878 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4879 /* These braces fend off a "empty body in an else-statement"
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4880 warning under GCC when assert expands to nothing. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4881 assert (bufp->regs_allocated == REGS_FIXED);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4882 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4883
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4884 /* Convert the pointer data in `regstart' and `regend' to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4885 indices. Register zero has to be set differently,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4886 since we haven't kept track of any info for it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4887 if (regs->num_regs > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4888 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4889 regs->start[0] = pos;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4890 regs->end[0] = (MATCHING_IN_FIRST_STRING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4891 ? ((regoff_t) (d - string1))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4892 : ((regoff_t) (d - string2 + size1)));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4893 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4894
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4895 /* Go through the first `min (num_regs, regs->num_regs)'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4896 registers, since that is all we initialized. */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4897 for (mcnt = 1; mcnt < MIN (num_nonshy_regs, regs->num_regs);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4898 mcnt++)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4899 {
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4900 int internal_reg = bufp->external_to_internal_register[mcnt];
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4901 if (REG_UNSET (regstart[internal_reg]) ||
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4902 REG_UNSET (regend[internal_reg]))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4903 regs->start[mcnt] = regs->end[mcnt] = -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4904 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4905 {
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4906 regs->start[mcnt] =
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4907 (regoff_t) POINTER_TO_OFFSET (regstart[internal_reg]);
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4908 regs->end[mcnt] =
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4909 (regoff_t) POINTER_TO_OFFSET (regend[internal_reg]);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4910 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4911 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4912
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4913 /* If the regs structure we return has more elements than
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4914 were in the pattern, set the extra elements to -1. If
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4915 we (re)allocated the registers, this is the case,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4916 because we always allocate enough to have at least one
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4917 -1 at the end. */
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
4918 for (mcnt = num_nonshy_regs; mcnt < regs->num_regs; mcnt++)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4919 regs->start[mcnt] = regs->end[mcnt] = -1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4920 } /* regs && !bufp->no_sub */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4921
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4922 DEBUG_PRINT4 ("%u failure points pushed, %u popped (%u remain).\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4923 nfailure_points_pushed, nfailure_points_popped,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4924 nfailure_points_pushed - nfailure_points_popped);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4925 DEBUG_PRINT2 ("%u registers pushed.\n", num_regs_pushed);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4926
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4927 mcnt = d - pos - (MATCHING_IN_FIRST_STRING
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4928 ? string1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4929 : string2 - size1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4930
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4931 DEBUG_PRINT2 ("Returning %d from re_match_2.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4932
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4933 FREE_VARIABLES ();
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
4934 RESTORE_IN_MATCH_FLAG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4935 return mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4936 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4937
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4938 /* Otherwise match next pattern command. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4939 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4940 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4941 /* Ignore these. Used to ignore the n of succeed_n's which
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4942 currently have n == 0. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4943 case no_op:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4944 DEBUG_PRINT1 ("EXECUTING no_op.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4945 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4946
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4947 case succeed:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4948 DEBUG_PRINT1 ("EXECUTING succeed.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4949 goto succeed_label;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4950
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4951 /* Match the next n pattern characters exactly. The following
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4952 byte in the pattern defines n, and the n bytes after that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4953 are the characters to match. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4954 case exactn:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4955 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4956 DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4957
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4958 /* This is written out as an if-else so we don't waste time
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4959 testing `translate' inside the loop. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4960 if (TRANSLATE_P (translate))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4961 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4962 do
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4963 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4964 #ifdef MULE
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4965 Emchar pat_ch, buf_ch;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4966 Bytecount pat_len;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4967
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
4968 REGEX_PREFETCH ();
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4969 pat_ch = charptr_emchar (p);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4970 buf_ch = charptr_emchar (d);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4971 if (RE_TRANSLATE (buf_ch) != pat_ch)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4972 goto fail;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4973
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4974 pat_len = charcount_to_bytecount (p, 1);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4975 p += pat_len;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4976 INC_CHARPTR (d);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4977
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4978 mcnt -= pat_len;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4979 #else /* not MULE */
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
4980 REGEX_PREFETCH ();
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4981 if ((unsigned char) RE_TRANSLATE (*d++) != *p++)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4982 goto fail;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4983 mcnt--;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4984 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4985 }
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4986 while (mcnt > 0);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4987 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4988 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4989 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4990 do
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4991 {
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
4992 REGEX_PREFETCH ();
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
4993 if (*d++ != *p++) goto fail;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4994 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4995 while (--mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4996 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4997 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4998 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4999
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5000
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5001 /* Match any character except possibly a newline or a null. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5002 case anychar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5003 DEBUG_PRINT1 ("EXECUTING anychar.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5004
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5005 REGEX_PREFETCH ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5006
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5007 if ((!(bufp->syntax & RE_DOT_NEWLINE) && TRANSLATE (*d) == '\n')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5008 || (bufp->syntax & RE_DOT_NOT_NULL && TRANSLATE (*d) == '\000'))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5009 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5010
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5011 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5012 DEBUG_PRINT2 (" Matched `%d'.\n", *d);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5013 INC_CHARPTR (d); /* XEmacs change */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5014 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5015
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5016
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5017 case charset:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5018 case charset_not:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5019 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5020 REGISTER unsigned char c;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5021 re_bool not_p = (re_opcode_t) *(p - 1) == charset_not;
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5022
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5023 DEBUG_PRINT2 ("EXECUTING charset%s.\n", not_p ? "_not" : "");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5024
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5025 REGEX_PREFETCH ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5026 c = TRANSLATE (*d); /* The character to match. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5027
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
5028 /* Cast to `unsigned int' instead of `unsigned char' in case the
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5029 bit list is a full 32 bytes long. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
5030 if (c < (unsigned int) (*p * BYTEWIDTH)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5031 && p[1 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH)))
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5032 not_p = !not_p;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5033
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5034 p += 1 + *p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5035
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5036 if (!not_p) goto fail;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5037
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5038 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5039 INC_CHARPTR (d); /* XEmacs change */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5040 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5041 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5042
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5043 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5044 case charset_mule:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5045 case charset_mule_not:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5046 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5047 REGISTER Emchar c;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5048 re_bool not_p = (re_opcode_t) *(p - 1) == charset_mule_not;
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5049
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5050 DEBUG_PRINT2 ("EXECUTING charset_mule%s.\n", not_p ? "_not" : "");
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5051
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5052 REGEX_PREFETCH ();
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
5053 c = charptr_emchar ((const Intbyte *) d);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5054 c = TRANSLATE_EXTENDED_UNSAFE (c); /* The character to match. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5055
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5056 if (EQ (Qt, unified_range_table_lookup (p, c, Qnil)))
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5057 not_p = !not_p;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5058
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5059 p += unified_range_table_bytes_used (p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5060
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5061 if (!not_p) goto fail;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5062
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5063 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5064 INC_CHARPTR (d);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5065 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5066 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5067 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5068
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5069
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5070 /* The beginning of a group is represented by start_memory.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5071 The arguments are the register number in the next byte, and the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5072 number of groups inner to this one in the next. The text
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5073 matched within the group is recorded (in the internal
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5074 registers data structure) under the register number. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5075 case start_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5076 DEBUG_PRINT3 ("EXECUTING start_memory %d (%d):\n", *p, p[1]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5077
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5078 /* Find out if this group can match the empty string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5079 p1 = p; /* To send to group_match_null_string_p. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5080
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5081 if (REG_MATCH_NULL_STRING_P (reg_info[*p]) == MATCH_NULL_UNSET_VALUE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5082 REG_MATCH_NULL_STRING_P (reg_info[*p])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5083 = group_match_null_string_p (&p1, pend, reg_info);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5084
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5085 /* Save the position in the string where we were the last time
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5086 we were at this open-group operator in case the group is
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5087 operated upon by a repetition operator, e.g., with `(a*)*b'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5088 against `ab'; then we want to ignore where we are now in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5089 the string in case this attempt to match fails. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5090 old_regstart[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5091 ? REG_UNSET (regstart[*p]) ? d : regstart[*p]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5092 : regstart[*p];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5093 DEBUG_PRINT2 (" old_regstart: %d\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5094 POINTER_TO_OFFSET (old_regstart[*p]));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5095
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5096 regstart[*p] = d;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5097 DEBUG_PRINT2 (" regstart: %d\n", POINTER_TO_OFFSET (regstart[*p]));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5098
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5099 IS_ACTIVE (reg_info[*p]) = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5100 MATCHED_SOMETHING (reg_info[*p]) = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5101
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5102 /* Clear this whenever we change the register activity status. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5103 set_regs_matched_done = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5104
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5105 /* This is the new highest active register. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5106 highest_active_reg = *p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5107
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5108 /* If nothing was active before, this is the new lowest active
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5109 register. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5110 if (lowest_active_reg == NO_LOWEST_ACTIVE_REG)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5111 lowest_active_reg = *p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5112
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5113 /* Move past the register number and inner group count. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5114 p += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5115 just_past_start_mem = p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5116
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5117 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5118
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5119
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5120 /* The stop_memory opcode represents the end of a group. Its
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5121 arguments are the same as start_memory's: the register
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5122 number, and the number of inner groups. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5123 case stop_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5124 DEBUG_PRINT3 ("EXECUTING stop_memory %d (%d):\n", *p, p[1]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5125
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5126 /* We need to save the string position the last time we were at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5127 this close-group operator in case the group is operated
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5128 upon by a repetition operator, e.g., with `((a*)*(b*)*)*'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5129 against `aba'; then we want to ignore where we are now in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5130 the string in case this attempt to match fails. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5131 old_regend[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5132 ? REG_UNSET (regend[*p]) ? d : regend[*p]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5133 : regend[*p];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5134 DEBUG_PRINT2 (" old_regend: %d\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5135 POINTER_TO_OFFSET (old_regend[*p]));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5136
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5137 regend[*p] = d;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5138 DEBUG_PRINT2 (" regend: %d\n", POINTER_TO_OFFSET (regend[*p]));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5139
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5140 /* This register isn't active anymore. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5141 IS_ACTIVE (reg_info[*p]) = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5142
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5143 /* Clear this whenever we change the register activity status. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5144 set_regs_matched_done = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5145
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5146 /* If this was the only register active, nothing is active
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5147 anymore. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5148 if (lowest_active_reg == highest_active_reg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5149 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5150 lowest_active_reg = NO_LOWEST_ACTIVE_REG;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5151 highest_active_reg = NO_HIGHEST_ACTIVE_REG;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5152 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5153 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5154 { /* We must scan for the new highest active register, since
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5155 it isn't necessarily one less than now: consider
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5156 (a(b)c(d(e)f)g). When group 3 ends, after the f), the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5157 new highest active register is 1. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5158 unsigned char r = *p - 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5159 while (r > 0 && !IS_ACTIVE (reg_info[r]))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5160 r--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5161
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5162 /* If we end up at register zero, that means that we saved
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5163 the registers as the result of an `on_failure_jump', not
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5164 a `start_memory', and we jumped to past the innermost
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5165 `stop_memory'. For example, in ((.)*) we save
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5166 registers 1 and 2 as a result of the *, but when we pop
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5167 back to the second ), we are at the stop_memory 1.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5168 Thus, nothing is active. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5169 if (r == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5170 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5171 lowest_active_reg = NO_LOWEST_ACTIVE_REG;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5172 highest_active_reg = NO_HIGHEST_ACTIVE_REG;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5173 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5174 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5175 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5176 highest_active_reg = r;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5177
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5178 /* 98/9/21 jhod: We've also gotta set lowest_active_reg, don't we? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5179 r = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5180 while (r < highest_active_reg && !IS_ACTIVE(reg_info[r]))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5181 r++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5182 lowest_active_reg = r;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5183 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5184 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5185
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5186 /* If just failed to match something this time around with a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5187 group that's operated on by a repetition operator, try to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5188 force exit from the ``loop'', and restore the register
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5189 information for this group that we had before trying this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5190 last match. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5191 if ((!MATCHED_SOMETHING (reg_info[*p])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5192 || just_past_start_mem == p - 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5193 && (p + 2) < pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5194 {
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5195 re_bool is_a_jump_n = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5196
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5197 p1 = p + 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5198 mcnt = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5199 switch ((re_opcode_t) *p1++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5200 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5201 case jump_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5202 is_a_jump_n = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5203 case pop_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5204 case maybe_pop_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5205 case jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5206 case dummy_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5207 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5208 if (is_a_jump_n)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5209 p1 += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5210 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5211
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5212 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5213 /* do nothing */ ;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5214 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5215 p1 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5216
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5217 /* If the next operation is a jump backwards in the pattern
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5218 to an on_failure_jump right before the start_memory
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5219 corresponding to this stop_memory, exit from the loop
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5220 by forcing a failure after pushing on the stack the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5221 on_failure_jump's jump in the pattern, and d. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5222 if (mcnt < 0 && (re_opcode_t) *p1 == on_failure_jump
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5223 && (re_opcode_t) p1[3] == start_memory && p1[4] == *p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5224 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5225 /* If this group ever matched anything, then restore
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5226 what its registers were before trying this last
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5227 failed match, e.g., with `(a*)*b' against `ab' for
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5228 regstart[1], and, e.g., with `((a*)*(b*)*)*'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5229 against `aba' for regend[3].
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5230
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5231 Also restore the registers for inner groups for,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5232 e.g., `((a*)(b*))*' against `aba' (register 3 would
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5233 otherwise get trashed). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5234
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5235 if (EVER_MATCHED_SOMETHING (reg_info[*p]))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5236 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
5237 int r;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5238
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5239 EVER_MATCHED_SOMETHING (reg_info[*p]) = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5240
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5241 /* Restore this and inner groups' (if any) registers. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5242 for (r = *p; r < *p + *(p + 1); r++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5243 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5244 regstart[r] = old_regstart[r];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5245
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5246 /* xx why this test? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5247 if (old_regend[r] >= regstart[r])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5248 regend[r] = old_regend[r];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5249 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5250 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5251 p1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5252 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5253 PUSH_FAILURE_POINT (p1 + mcnt, d, -2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5254
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5255 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5256 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5257 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5258
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5259 /* Move past the register number and the inner group count. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5260 p += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5261 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5262
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5263
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5264 /* \<digit> has been turned into a `duplicate' command which is
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
5265 followed by the numeric value of <digit> as the register number.
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
5266 (Already passed through external-to-internal-register mapping,
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
5267 so it refers to the actual group number, not the non-shy-only
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
5268 numbering used in the external world.) */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5269 case duplicate:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5270 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5271 REGISTER re_char *d2, *dend2;
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
5272 /* Get which register to match against. */
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
5273 int regno = *p++;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5274 DEBUG_PRINT2 ("EXECUTING duplicate %d.\n", regno);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5275
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5276 /* Can't back reference a group which we've never matched. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5277 if (REG_UNSET (regstart[regno]) || REG_UNSET (regend[regno]))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5278 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5279
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5280 /* Where in input to try to start matching. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5281 d2 = regstart[regno];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5282
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5283 /* Where to stop matching; if both the place to start and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5284 the place to stop matching are in the same string, then
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5285 set to the place to stop, otherwise, for now have to use
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5286 the end of the first string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5287
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5288 dend2 = ((FIRST_STRING_P (regstart[regno])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5289 == FIRST_STRING_P (regend[regno]))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5290 ? regend[regno] : end_match_1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5291 for (;;)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5292 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5293 /* If necessary, advance to next segment in register
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5294 contents. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5295 while (d2 == dend2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5296 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5297 if (dend2 == end_match_2) break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5298 if (dend2 == regend[regno]) break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5299
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5300 /* End of string1 => advance to string2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5301 d2 = string2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5302 dend2 = regend[regno];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5303 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5304 /* At end of register contents => success */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5305 if (d2 == dend2) break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5306
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5307 /* If necessary, advance to next segment in data. */
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5308 REGEX_PREFETCH ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5309
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5310 /* How many characters left in this segment to match. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5311 mcnt = dend - d;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5312
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5313 /* Want how many consecutive characters we can match in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5314 one shot, so, if necessary, adjust the count. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5315 if (mcnt > dend2 - d2)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5316 mcnt = dend2 - d2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5317
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5318 /* Compare that many; failure if mismatch, else move
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5319 past them. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5320 if (TRANSLATE_P (translate)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5321 ? bcmp_translate ((unsigned char *) d,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5322 (unsigned char *) d2, mcnt, translate)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5323 : memcmp (d, d2, mcnt))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5324 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5325 d += mcnt, d2 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5326
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5327 /* Do this because we've match some characters. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5328 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5329 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5330 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5331 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5332
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5333
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5334 /* begline matches the empty string at the beginning of the string
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5335 (unless `not_bol' is set in `bufp'), and, if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5336 `newline_anchor' is set, after newlines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5337 case begline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5338 DEBUG_PRINT1 ("EXECUTING begline.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5339
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5340 if (AT_STRINGS_BEG (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5341 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5342 if (!bufp->not_bol) break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5343 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5344 else if (d[-1] == '\n' && bufp->newline_anchor)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5345 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5346 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5347 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5348 /* In all other cases, we fail. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5349 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5350
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5351
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5352 /* endline is the dual of begline. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5353 case endline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5354 DEBUG_PRINT1 ("EXECUTING endline.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5355
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5356 if (AT_STRINGS_END (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5357 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5358 if (!bufp->not_eol) break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5359 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5361 /* We have to ``prefetch'' the next character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5362 else if ((d == end1 ? *string2 : *d) == '\n'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5363 && bufp->newline_anchor)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5364 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5365 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5366 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5367 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5368
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5369
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5370 /* Match at the very beginning of the data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5371 case begbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5372 DEBUG_PRINT1 ("EXECUTING begbuf.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5373 if (AT_STRINGS_BEG (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5374 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5375 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5376
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5377
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5378 /* Match at the very end of the data. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5379 case endbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5380 DEBUG_PRINT1 ("EXECUTING endbuf.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5381 if (AT_STRINGS_END (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5382 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5383 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5384
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5385
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5386 /* on_failure_keep_string_jump is used to optimize `.*\n'. It
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5387 pushes NULL as the value for the string on the stack. Then
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5388 `pop_failure_point' will keep the current value for the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5389 string, instead of restoring it. To see why, consider
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5390 matching `foo\nbar' against `.*\n'. The .* matches the foo;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5391 then the . fails against the \n. But the next thing we want
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5392 to do is match the \n against the \n; if we restored the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5393 string value, we would be back at the foo.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5394
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5395 Because this is used only in specific cases, we don't need to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5396 check all the things that `on_failure_jump' does, to make
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5397 sure the right things get saved on the stack. Hence we don't
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5398 share its code. The only reason to push anything on the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5399 stack at all is that otherwise we would have to change
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5400 `anychar's code to do something besides goto fail in this
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5401 case; that seems worse than this. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5402 case on_failure_keep_string_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5403 DEBUG_PRINT1 ("EXECUTING on_failure_keep_string_jump");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5404
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5405 EXTRACT_NUMBER_AND_INCR (mcnt, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5406 DEBUG_PRINT3 (" %d (to 0x%lx):\n", mcnt, (long) (p + mcnt));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5407
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5408 PUSH_FAILURE_POINT (p + mcnt, (unsigned char *) 0, -2);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5409 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5410
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5411
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5412 /* Uses of on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5413
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5414 Each alternative starts with an on_failure_jump that points
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5415 to the beginning of the next alternative. Each alternative
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5416 except the last ends with a jump that in effect jumps past
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5417 the rest of the alternatives. (They really jump to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5418 ending jump of the following alternative, because tensioning
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5419 these jumps is a hassle.)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5420
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5421 Repeats start with an on_failure_jump that points past both
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5422 the repetition text and either the following jump or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5423 pop_failure_jump back to this on_failure_jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5424 case on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5425 on_failure:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5426 DEBUG_PRINT1 ("EXECUTING on_failure_jump");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5427
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5428 EXTRACT_NUMBER_AND_INCR (mcnt, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5429 DEBUG_PRINT3 (" %d (to 0x%lx)", mcnt, (long) (p + mcnt));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5430
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5431 /* If this on_failure_jump comes right before a group (i.e.,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5432 the original * applied to a group), save the information
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5433 for that group and all inner ones, so that if we fail back
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5434 to this point, the group's information will be correct.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5435 For example, in \(a*\)*\1, we need the preceding group,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5436 and in \(\(a*\)b*\)\2, we need the inner group. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5437
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5438 /* We can't use `p' to check ahead because we push
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5439 a failure point to `p + mcnt' after we do this. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5440 p1 = p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5441
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5442 /* We need to skip no_op's before we look for the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5443 start_memory in case this on_failure_jump is happening as
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5444 the result of a completed succeed_n, as in \(a\)\{1,3\}b\1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5445 against aba. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5446 while (p1 < pend && (re_opcode_t) *p1 == no_op)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5447 p1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5448
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5449 if (p1 < pend && (re_opcode_t) *p1 == start_memory)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5450 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5451 /* We have a new highest active register now. This will
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5452 get reset at the start_memory we are about to get to,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5453 but we will have saved all the registers relevant to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5454 this repetition op, as described above. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5455 highest_active_reg = *(p1 + 1) + *(p1 + 2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5456 if (lowest_active_reg == NO_LOWEST_ACTIVE_REG)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5457 lowest_active_reg = *(p1 + 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5458 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5459
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5460 DEBUG_PRINT1 (":\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5461 PUSH_FAILURE_POINT (p + mcnt, d, -2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5462 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5463
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5464
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5465 /* A smart repeat ends with `maybe_pop_jump'.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5466 We change it to either `pop_failure_jump' or `jump'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5467 case maybe_pop_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5468 EXTRACT_NUMBER_AND_INCR (mcnt, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5469 DEBUG_PRINT2 ("EXECUTING maybe_pop_jump %d.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5470 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5471 REGISTER unsigned char *p2 = p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5472
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5473 /* Compare the beginning of the repeat with what in the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5474 pattern follows its end. If we can establish that there
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5475 is nothing that they would both match, i.e., that we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5476 would have to backtrack because of (as in, e.g., `a*a')
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5477 then we can change to pop_failure_jump, because we'll
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5478 never have to backtrack.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5479
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5480 This is not true in the case of alternatives: in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5481 `(a|ab)*' we do need to backtrack to the `ab' alternative
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5482 (e.g., if the string was `ab'). But instead of trying to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5483 detect that here, the alternative has put on a dummy
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5484 failure point which is what we will end up popping. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5485
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5486 /* Skip over open/close-group commands.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5487 If what follows this loop is a ...+ construct,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5488 look at what begins its body, since we will have to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5489 match at least one of that. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5490 while (1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5491 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5492 if (p2 + 2 < pend
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5493 && ((re_opcode_t) *p2 == stop_memory
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5494 || (re_opcode_t) *p2 == start_memory))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5495 p2 += 3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5496 else if (p2 + 6 < pend
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5497 && (re_opcode_t) *p2 == dummy_failure_jump)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5498 p2 += 6;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5499 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5500 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5501 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5502
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5503 p1 = p + mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5504 /* p1[0] ... p1[2] are the `on_failure_jump' corresponding
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5505 to the `maybe_finalize_jump' of this case. Examine what
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5506 follows. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5507
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5508 /* If we're at the end of the pattern, we can change. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5509 if (p2 == pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5510 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5511 /* Consider what happens when matching ":\(.*\)"
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5512 against ":/". I don't really understand this code
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5513 yet. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5514 p[-3] = (unsigned char) pop_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5515 DEBUG_PRINT1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5516 (" End of pattern: change to `pop_failure_jump'.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5517 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5518
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5519 else if ((re_opcode_t) *p2 == exactn
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5520 || (bufp->newline_anchor && (re_opcode_t) *p2 == endline))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5521 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5522 REGISTER unsigned char c
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5523 = *p2 == (unsigned char) endline ? '\n' : p2[2];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5524
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5525 if ((re_opcode_t) p1[3] == exactn && p1[5] != c)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5526 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5527 p[-3] = (unsigned char) pop_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5528 DEBUG_PRINT3 (" %c != %c => pop_failure_jump.\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5529 c, p1[5]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5530 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5531
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5532 else if ((re_opcode_t) p1[3] == charset
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5533 || (re_opcode_t) p1[3] == charset_not)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5534 {
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5535 int not_p = (re_opcode_t) p1[3] == charset_not;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5536
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5537 if (c < (unsigned char) (p1[4] * BYTEWIDTH)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5538 && p1[5 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH)))
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5539 not_p = !not_p;
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5540
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5541 /* `not_p' is equal to 1 if c would match, which means
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5542 that we can't change to pop_failure_jump. */
458
c33ae14dd6d0 Import from CVS: tag r21-2-44
cvs
parents: 456
diff changeset
5543 if (!not_p)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5544 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5545 p[-3] = (unsigned char) pop_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5546 DEBUG_PRINT1 (" No match => pop_failure_jump.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5547 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5548 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5549 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5550 else if ((re_opcode_t) *p2 == charset)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5551 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5552 #ifdef DEBUG
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5553 REGISTER unsigned char c
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5554 = *p2 == (unsigned char) endline ? '\n' : p2[2];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5555 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5556
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5557 if ((re_opcode_t) p1[3] == exactn
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5558 && ! ((int) p2[1] * BYTEWIDTH > (int) p1[5]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5559 && (p2[2 + p1[5] / BYTEWIDTH]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5560 & (1 << (p1[5] % BYTEWIDTH)))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5561 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5562 p[-3] = (unsigned char) pop_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5563 DEBUG_PRINT3 (" %c != %c => pop_failure_jump.\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5564 c, p1[5]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5565 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5566
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5567 else if ((re_opcode_t) p1[3] == charset_not)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5568 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5569 int idx;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5570 /* We win if the charset_not inside the loop
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5571 lists every character listed in the charset after. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5572 for (idx = 0; idx < (int) p2[1]; idx++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5573 if (! (p2[2 + idx] == 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5574 || (idx < (int) p1[4]
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5575 && ((p2[2 + idx] & ~ p1[5 + idx]) == 0))))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5576 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5577
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5578 if (idx == p2[1])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5579 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5580 p[-3] = (unsigned char) pop_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5581 DEBUG_PRINT1 (" No match => pop_failure_jump.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5582 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5583 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5584 else if ((re_opcode_t) p1[3] == charset)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5585 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5586 int idx;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5587 /* We win if the charset inside the loop
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5588 has no overlap with the one after the loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5589 for (idx = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5590 idx < (int) p2[1] && idx < (int) p1[4];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5591 idx++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5592 if ((p2[2 + idx] & p1[5 + idx]) != 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5593 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5594
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5595 if (idx == p2[1] || idx == p1[4])
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5596 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5597 p[-3] = (unsigned char) pop_failure_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5598 DEBUG_PRINT1 (" No match => pop_failure_jump.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5599 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5600 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5601 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5602 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5603 p -= 2; /* Point at relative address again. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5604 if ((re_opcode_t) p[-1] != pop_failure_jump)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5605 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5606 p[-1] = (unsigned char) jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5607 DEBUG_PRINT1 (" Match => jump.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5608 goto unconditional_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5609 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5610 /* Note fall through. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5611
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5612
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5613 /* The end of a simple repeat has a pop_failure_jump back to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5614 its matching on_failure_jump, where the latter will push a
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5615 failure point. The pop_failure_jump takes off failure
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5616 points put on by this pop_failure_jump's matching
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5617 on_failure_jump; we got through the pattern to here from the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5618 matching on_failure_jump, so didn't fail. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5619 case pop_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5620 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5621 /* We need to pass separate storage for the lowest and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5622 highest registers, even though we don't care about the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5623 actual values. Otherwise, we will restore only one
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5624 register from the stack, since lowest will == highest in
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5625 `pop_failure_point'. */
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
5626 int dummy_low_reg, dummy_high_reg;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5627 unsigned char *pdummy;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5628 re_char *sdummy = NULL;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5629
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5630 DEBUG_PRINT1 ("EXECUTING pop_failure_jump.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5631 POP_FAILURE_POINT (sdummy, pdummy,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5632 dummy_low_reg, dummy_high_reg,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5633 reg_dummy, reg_dummy, reg_info_dummy);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5634 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5635 /* Note fall through. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5636
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5637
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5638 /* Unconditionally jump (without popping any failure points). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5639 case jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5640 unconditional_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5641 EXTRACT_NUMBER_AND_INCR (mcnt, p); /* Get the amount to jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5642 DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5643 p += mcnt; /* Do the jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5644 DEBUG_PRINT2 ("(to 0x%lx).\n", (long) p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5645 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5646
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5647
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5648 /* We need this opcode so we can detect where alternatives end
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5649 in `group_match_null_string_p' et al. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5650 case jump_past_alt:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5651 DEBUG_PRINT1 ("EXECUTING jump_past_alt.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5652 goto unconditional_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5653
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5654
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5655 /* Normally, the on_failure_jump pushes a failure point, which
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5656 then gets popped at pop_failure_jump. We will end up at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5657 pop_failure_jump, also, and with a pattern of, say, `a+', we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5658 are skipping over the on_failure_jump, so we have to push
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5659 something meaningless for pop_failure_jump to pop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5660 case dummy_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5661 DEBUG_PRINT1 ("EXECUTING dummy_failure_jump.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5662 /* It doesn't matter what we push for the string here. What
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5663 the code at `fail' tests is the value for the pattern. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5664 PUSH_FAILURE_POINT ((unsigned char *) 0, (unsigned char *) 0, -2);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5665 goto unconditional_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5666
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5667
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5668 /* At the end of an alternative, we need to push a dummy failure
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5669 point in case we are followed by a `pop_failure_jump', because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5670 we don't want the failure point for the alternative to be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5671 popped. For example, matching `(a|ab)*' against `aab'
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5672 requires that we match the `ab' alternative. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5673 case push_dummy_failure:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5674 DEBUG_PRINT1 ("EXECUTING push_dummy_failure.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5675 /* See comments just above at `dummy_failure_jump' about the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5676 two zeroes. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5677 PUSH_FAILURE_POINT ((unsigned char *) 0, (unsigned char *) 0, -2);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5678 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5679
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5680 /* Have to succeed matching what follows at least n times.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5681 After that, handle like `on_failure_jump'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5682 case succeed_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5683 EXTRACT_NUMBER (mcnt, p + 2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5684 DEBUG_PRINT2 ("EXECUTING succeed_n %d.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5685
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5686 assert (mcnt >= 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5687 /* Originally, this is how many times we HAVE to succeed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5688 if (mcnt > 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5689 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5690 mcnt--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5691 p += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5692 STORE_NUMBER_AND_INCR (p, mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5693 DEBUG_PRINT3 (" Setting 0x%lx to %d.\n", (long) p, mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5694 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5695 else if (mcnt == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5696 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5697 DEBUG_PRINT2 (" Setting two bytes from 0x%lx to no_op.\n",
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5698 (long) (p+2));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5699 p[2] = (unsigned char) no_op;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5700 p[3] = (unsigned char) no_op;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5701 goto on_failure;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5702 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5703 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5704
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5705 case jump_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5706 EXTRACT_NUMBER (mcnt, p + 2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5707 DEBUG_PRINT2 ("EXECUTING jump_n %d.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5708
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5709 /* Originally, this is how many times we CAN jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5710 if (mcnt)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5711 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5712 mcnt--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5713 STORE_NUMBER (p + 2, mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5714 goto unconditional_jump;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5715 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5716 /* If don't have to jump any more, skip over the rest of command. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5717 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5718 p += 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5719 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5720
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5721 case set_number_at:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5722 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5723 DEBUG_PRINT1 ("EXECUTING set_number_at.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5724
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5725 EXTRACT_NUMBER_AND_INCR (mcnt, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5726 p1 = p + mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5727 EXTRACT_NUMBER_AND_INCR (mcnt, p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5728 DEBUG_PRINT3 (" Setting 0x%lx to %d.\n", (long) p1, mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5729 STORE_NUMBER (p1, mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5730 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5731 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5732
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5733 case wordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5734 DEBUG_PRINT1 ("EXECUTING wordbound.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5735 should_succeed = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5736 matchwordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5737 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5738 /* XEmacs change */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5739 int result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5740 if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5741 result = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5742 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5743 {
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5744 re_char *d_before = POS_BEFORE_GAP_UNSAFE (d);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5745 re_char *d_after = POS_AFTER_GAP_UNSAFE (d);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5746
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5747 /* emch1 is the character before d, syn1 is the syntax of emch1,
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5748 emch2 is the character at d, and syn2 is the syntax of emch2. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5749 Emchar emch1, emch2;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5750 int syn1, syn2;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5751 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5752 int pos_before;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5753 #endif
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5754
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5755 DEC_CHARPTR (d_before);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5756 emch1 = charptr_emchar (d_before);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5757 emch2 = charptr_emchar (d_after);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5758
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5759 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5760 pos_before = SYNTAX_CACHE_BYTE_TO_CHAR (PTR_TO_OFFSET (d)) - 1;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5761 UPDATE_SYNTAX_CACHE (pos_before);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5762 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5763 syn1 = SYNTAX_FROM_CACHE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5764 emch1);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5765 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5766 UPDATE_SYNTAX_CACHE_FORWARD (pos_before + 1);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5767 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5768 syn2 = SYNTAX_FROM_CACHE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5769 emch2);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5770
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5771 result = ((syn1 == Sword) != (syn2 == Sword));
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5772 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5773 if (result == should_succeed)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5774 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5775 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5776 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5777
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5778 case notwordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5779 DEBUG_PRINT1 ("EXECUTING notwordbound.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5780 should_succeed = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5781 goto matchwordbound;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5782
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5783 case wordbeg:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5784 DEBUG_PRINT1 ("EXECUTING wordbeg.\n");
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5785 if (AT_STRINGS_END (d))
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5786 goto fail;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5787 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5788 /* XEmacs: this originally read:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5789
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5790 if (WORDCHAR_P (d) && (AT_STRINGS_BEG (d) || !WORDCHAR_P (d - 1)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5791 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5792
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5793 */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5794 re_char *dtmp = POS_AFTER_GAP_UNSAFE (d);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5795 Emchar emch = charptr_emchar (dtmp);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5796 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5797 int charpos = SYNTAX_CACHE_BYTE_TO_CHAR (PTR_TO_OFFSET (d));
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5798 UPDATE_SYNTAX_CACHE (charpos);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5799 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5800 if (SYNTAX_FROM_CACHE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5801 emch) != Sword)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5802 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5803 if (AT_STRINGS_BEG (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5804 break;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5805 dtmp = POS_BEFORE_GAP_UNSAFE (d);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5806 DEC_CHARPTR (dtmp);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5807 emch = charptr_emchar (dtmp);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5808 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5809 UPDATE_SYNTAX_CACHE_BACKWARD (charpos - 1);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5810 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5811 if (SYNTAX_FROM_CACHE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5812 emch) != Sword)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5813 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5814 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5815 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5816
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5817 case wordend:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5818 DEBUG_PRINT1 ("EXECUTING wordend.\n");
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5819 if (AT_STRINGS_BEG (d))
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5820 goto fail;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5821 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5822 /* XEmacs: this originally read:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5823
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5824 if (!AT_STRINGS_BEG (d) && WORDCHAR_P (d - 1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5825 && (!WORDCHAR_P (d) || AT_STRINGS_END (d)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5826 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5827
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5828 The or condition is incorrect (reversed).
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5829 */
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5830 re_char *dtmp;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5831 Emchar emch;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5832 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5833 int charpos = SYNTAX_CACHE_BYTE_TO_CHAR (PTR_TO_OFFSET (d)) - 1;
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5834 UPDATE_SYNTAX_CACHE (charpos);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5835 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5836 dtmp = POS_BEFORE_GAP_UNSAFE (d);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5837 DEC_CHARPTR (dtmp);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5838 emch = charptr_emchar (dtmp);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5839 if (SYNTAX_FROM_CACHE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5840 emch) != Sword)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5841 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5842 if (AT_STRINGS_END (d))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5843 break;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5844 dtmp = POS_AFTER_GAP_UNSAFE (d);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5845 emch = charptr_emchar (dtmp);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5846 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5847 UPDATE_SYNTAX_CACHE_FORWARD (charpos + 1);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5848 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5849 if (SYNTAX_FROM_CACHE (XCHAR_TABLE (regex_emacs_buffer->mirror_syntax_table),
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5850 emch) != Sword)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5851 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5852 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5853 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5854
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5855 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5856 case before_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5857 DEBUG_PRINT1 ("EXECUTING before_dot.\n");
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5858 if (! (NILP (regex_match_object) || BUFFERP (regex_match_object))
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
5859 || (BUF_PTR_BYTE_POS (regex_emacs_buffer, (unsigned char *) d)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
5860 >= BUF_PT (regex_emacs_buffer)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5861 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5862 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5863
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5864 case at_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5865 DEBUG_PRINT1 ("EXECUTING at_dot.\n");
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5866 if (! (NILP (regex_match_object) || BUFFERP (regex_match_object))
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
5867 || (BUF_PTR_BYTE_POS (regex_emacs_buffer, (unsigned char *) d)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
5868 != BUF_PT (regex_emacs_buffer)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5869 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5870 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5871
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5872 case after_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5873 DEBUG_PRINT1 ("EXECUTING after_dot.\n");
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5874 if (! (NILP (regex_match_object) || BUFFERP (regex_match_object))
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
5875 || (BUF_PTR_BYTE_POS (regex_emacs_buffer, (unsigned char *) d)
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
5876 <= BUF_PT (regex_emacs_buffer)))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5877 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5878 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5879 #if 0 /* not emacs19 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5880 case at_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5881 DEBUG_PRINT1 ("EXECUTING at_dot.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5882 if (BUF_PTR_BYTE_POS (regex_emacs_buffer, (unsigned char *) d) + 1
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5883 != BUF_PT (regex_emacs_buffer))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5884 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5885 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5886 #endif /* not emacs19 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5887
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5888 case syntaxspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5889 DEBUG_PRINT2 ("EXECUTING syntaxspec %d.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5890 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5891 goto matchsyntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5892
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5893 case wordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5894 DEBUG_PRINT1 ("EXECUTING Emacs wordchar.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5895 mcnt = (int) Sword;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5896 matchsyntax:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5897 should_succeed = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5898 matchornotsyntax:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5899 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5900 int matches;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5901 Emchar emch;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5902
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5903 REGEX_PREFETCH ();
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5904 #ifdef emacs
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5905 {
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5906 int charpos = SYNTAX_CACHE_BYTE_TO_CHAR (PTR_TO_OFFSET (d));
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5907 UPDATE_SYNTAX_CACHE (charpos);
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5908 }
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5909 #endif
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5910
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
5911 emch = charptr_emchar ((const Intbyte *) d);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
5912 matches = (SYNTAX_FROM_CACHE (regex_emacs_buffer->mirror_syntax_table,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5913 emch) == (enum syntaxcode) mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5914 INC_CHARPTR (d);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5915 if (matches != should_succeed)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5916 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5917 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5918 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5919 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5920
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5921 case notsyntaxspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5922 DEBUG_PRINT2 ("EXECUTING notsyntaxspec %d.\n", mcnt);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5923 mcnt = *p++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5924 goto matchnotsyntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5925
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5926 case notwordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5927 DEBUG_PRINT1 ("EXECUTING Emacs notwordchar.\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5928 mcnt = (int) Sword;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5929 matchnotsyntax:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5930 should_succeed = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5931 goto matchornotsyntax;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5932
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5933 #ifdef MULE
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5934 /* 97/2/17 jhod Mule category code patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5935 case categoryspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5936 should_succeed = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5937 matchornotcategory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5938 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5939 Emchar emch;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5940
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5941 mcnt = *p++;
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5942 REGEX_PREFETCH ();
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
5943 emch = charptr_emchar ((const Intbyte *) d);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5944 INC_CHARPTR (d);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5945 if (check_category_char(emch, regex_emacs_buffer->category_table,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5946 mcnt, should_succeed))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5947 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5948 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5949 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5950 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5951
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5952 case notcategoryspec:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5953 should_succeed = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5954 goto matchornotcategory;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5955 /* end of category patch */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5956 #endif /* MULE */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5957 #else /* not emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5958 case wordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5959 DEBUG_PRINT1 ("EXECUTING non-Emacs wordchar.\n");
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5960 REGEX_PREFETCH ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5961 if (!WORDCHAR_P_UNSAFE ((int) (*d)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5962 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5963 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5964 d++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5965 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5966
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5967 case notwordchar:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5968 DEBUG_PRINT1 ("EXECUTING non-Emacs notwordchar.\n");
450
98528da0b7fc Import from CVS: tag r21-2-40
cvs
parents: 446
diff changeset
5969 REGEX_PREFETCH ();
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5970 if (!WORDCHAR_P_UNSAFE ((int) (*d)))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5971 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5972 SET_REGS_MATCHED ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5973 d++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5974 break;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
5975 #endif /* emacs */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5976
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5977 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5978 abort ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5979 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5980 continue; /* Successfully executed one pattern command; keep going. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5981
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5982
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5983 /* We goto here if a matching operation fails. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5984 fail:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5985 if (!FAIL_STACK_EMPTY ())
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5986 { /* A restart point is known. Restore to that state. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5987 DEBUG_PRINT1 ("\nFAIL:\n");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5988 POP_FAILURE_POINT (d, p,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5989 lowest_active_reg, highest_active_reg,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5990 regstart, regend, reg_info);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5991
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5992 /* If this failure point is a dummy, try the next one. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5993 if (!p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5994 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5995
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5996 /* If we failed to the end of the pattern, don't examine *p. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5997 assert (p <= pend);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5998 if (p < pend)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5999 {
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
6000 re_bool is_a_jump_n = false;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6001
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6002 /* If failed to a backwards jump that's part of a repetition
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6003 loop, need to pop this failure point and use the next one. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6004 switch ((re_opcode_t) *p)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6005 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6006 case jump_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6007 is_a_jump_n = true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6008 case maybe_pop_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6009 case pop_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6010 case jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6011 p1 = p + 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6012 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6013 p1 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6014
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6015 if ((is_a_jump_n && (re_opcode_t) *p1 == succeed_n)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6016 || (!is_a_jump_n
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6017 && (re_opcode_t) *p1 == on_failure_jump))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6018 goto fail;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6019 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6020 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6021 /* do nothing */ ;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6022 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6023 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6024
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6025 if (d >= string1 && d <= end1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6026 dend = end_match_1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6027 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6028 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6029 break; /* Matching at this starting point really fails. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6030 } /* for (;;) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6031
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6032 if (best_regs_set)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6033 goto restore_best_regs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6034
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6035 FREE_VARIABLES ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6036
771
943eaba38521 [xemacs-hg @ 2002-03-13 08:51:24 by ben]
ben
parents: 665
diff changeset
6037 RESTORE_IN_MATCH_FLAG;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6038 return -1; /* Failure to match. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6039 } /* re_match_2 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6040
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6041 /* Subroutine definitions for re_match_2. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6042
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6043
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6044 /* We are passed P pointing to a register number after a start_memory.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6045
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6046 Return true if the pattern up to the corresponding stop_memory can
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6047 match the empty string, and false otherwise.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6048
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6049 If we find the matching stop_memory, sets P to point to one past its number.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6050 Otherwise, sets P to an undefined byte less than or equal to END.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6051
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6052 We don't handle duplicates properly (yet). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6053
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
6054 static re_bool
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6055 group_match_null_string_p (unsigned char **p, unsigned char *end,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6056 register_info_type *reg_info)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6057 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6058 int mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6059 /* Point to after the args to the start_memory. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6060 unsigned char *p1 = *p + 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6061
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6062 while (p1 < end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6063 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6064 /* Skip over opcodes that can match nothing, and return true or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6065 false, as appropriate, when we get to one that can't, or to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6066 matching stop_memory. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6067
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6068 switch ((re_opcode_t) *p1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6069 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6070 /* Could be either a loop or a series of alternatives. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6071 case on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6072 p1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6073 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6074
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6075 /* If the next operation is not a jump backwards in the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6076 pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6077
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6078 if (mcnt >= 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6079 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6080 /* Go through the on_failure_jumps of the alternatives,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6081 seeing if any of the alternatives cannot match nothing.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6082 The last alternative starts with only a jump,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6083 whereas the rest start with on_failure_jump and end
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6084 with a jump, e.g., here is the pattern for `a|b|c':
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6085
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6086 /on_failure_jump/0/6/exactn/1/a/jump_past_alt/0/6
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6087 /on_failure_jump/0/6/exactn/1/b/jump_past_alt/0/3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6088 /exactn/1/c
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6089
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6090 So, we have to first go through the first (n-1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6091 alternatives and then deal with the last one separately. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6092
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6093
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6094 /* Deal with the first (n-1) alternatives, which start
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6095 with an on_failure_jump (see above) that jumps to right
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6096 past a jump_past_alt. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6097
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6098 while ((re_opcode_t) p1[mcnt-3] == jump_past_alt)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6099 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6100 /* `mcnt' holds how many bytes long the alternative
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6101 is, including the ending `jump_past_alt' and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6102 its number. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6103
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6104 if (!alt_match_null_string_p (p1, p1 + mcnt - 3,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6105 reg_info))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6106 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6107
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6108 /* Move to right after this alternative, including the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6109 jump_past_alt. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6110 p1 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6111
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6112 /* Break if it's the beginning of an n-th alternative
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6113 that doesn't begin with an on_failure_jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6114 if ((re_opcode_t) *p1 != on_failure_jump)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6115 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6116
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6117 /* Still have to check that it's not an n-th
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6118 alternative that starts with an on_failure_jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6119 p1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6120 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6121 if ((re_opcode_t) p1[mcnt-3] != jump_past_alt)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6122 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6123 /* Get to the beginning of the n-th alternative. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6124 p1 -= 3;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6125 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6126 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6127 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6128
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6129 /* Deal with the last alternative: go back and get number
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6130 of the `jump_past_alt' just before it. `mcnt' contains
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6131 the length of the alternative. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6132 EXTRACT_NUMBER (mcnt, p1 - 2);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6133
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6134 if (!alt_match_null_string_p (p1, p1 + mcnt, reg_info))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6135 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6136
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6137 p1 += mcnt; /* Get past the n-th alternative. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6138 } /* if mcnt > 0 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6139 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6140
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6141
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6142 case stop_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6143 assert (p1[1] == **p);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6144 *p = p1 + 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6145 return true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6146
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6147
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6148 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6149 if (!common_op_match_null_string_p (&p1, end, reg_info))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6150 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6151 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6152 } /* while p1 < end */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6153
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6154 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6155 } /* group_match_null_string_p */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6156
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6157
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6158 /* Similar to group_match_null_string_p, but doesn't deal with alternatives:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6159 It expects P to be the first byte of a single alternative and END one
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6160 byte past the last. The alternative can contain groups. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6161
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
6162 static re_bool
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6163 alt_match_null_string_p (unsigned char *p, unsigned char *end,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6164 register_info_type *reg_info)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6165 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6166 int mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6167 unsigned char *p1 = p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6168
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6169 while (p1 < end)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6170 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6171 /* Skip over opcodes that can match nothing, and break when we get
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6172 to one that can't. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6173
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6174 switch ((re_opcode_t) *p1)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6175 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6176 /* It's a loop. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6177 case on_failure_jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6178 p1++;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6179 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6180 p1 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6181 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6182
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6183 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6184 if (!common_op_match_null_string_p (&p1, end, reg_info))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6185 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6186 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6187 } /* while p1 < end */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6188
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6189 return true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6190 } /* alt_match_null_string_p */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6191
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6192
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6193 /* Deals with the ops common to group_match_null_string_p and
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6194 alt_match_null_string_p.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6195
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6196 Sets P to one after the op and its arguments, if any. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6197
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
6198 static re_bool
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6199 common_op_match_null_string_p (unsigned char **p, unsigned char *end,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6200 register_info_type *reg_info)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6201 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6202 int mcnt;
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
6203 re_bool ret;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6204 int reg_no;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6205 unsigned char *p1 = *p;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6206
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6207 switch ((re_opcode_t) *p1++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6208 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6209 case no_op:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6210 case begline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6211 case endline:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6212 case begbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6213 case endbuf:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6214 case wordbeg:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6215 case wordend:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6216 case wordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6217 case notwordbound:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6218 #ifdef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6219 case before_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6220 case at_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6221 case after_dot:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6222 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6223 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6224
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6225 case start_memory:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6226 reg_no = *p1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6227 assert (reg_no > 0 && reg_no <= MAX_REGNUM);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6228 ret = group_match_null_string_p (&p1, end, reg_info);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6229
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6230 /* Have to set this here in case we're checking a group which
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6231 contains a group and a back reference to it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6232
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6233 if (REG_MATCH_NULL_STRING_P (reg_info[reg_no]) == MATCH_NULL_UNSET_VALUE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6234 REG_MATCH_NULL_STRING_P (reg_info[reg_no]) = ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6235
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6236 if (!ret)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6237 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6238 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6239
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6240 /* If this is an optimized succeed_n for zero times, make the jump. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6241 case jump:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6242 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6243 if (mcnt >= 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6244 p1 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6245 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6246 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6247 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6248
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6249 case succeed_n:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6250 /* Get to the number of times to succeed. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6251 p1 += 2;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6252 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6253
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6254 if (mcnt == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6255 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6256 p1 -= 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6257 EXTRACT_NUMBER_AND_INCR (mcnt, p1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6258 p1 += mcnt;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6259 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6260 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6261 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6262 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6263
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6264 case duplicate:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6265 if (!REG_MATCH_NULL_STRING_P (reg_info[*p1]))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6266 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6267 break;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6268
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6269 case set_number_at:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6270 p1 += 4;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6271
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6272 default:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6273 /* All other opcodes mean we cannot match the empty string. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6274 return false;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6275 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6276
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6277 *p = p1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6278 return true;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6279 } /* common_op_match_null_string_p */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6280
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6281
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6282 /* Return zero if TRANSLATE[S1] and TRANSLATE[S2] are identical for LEN
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6283 bytes; nonzero otherwise. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6284
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6285 static int
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6286 bcmp_translate (re_char *s1, re_char *s2,
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6287 REGISTER int len, RE_TRANSLATE_TYPE translate)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6288 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6289 REGISTER const unsigned char *p1 = s1, *p2 = s2;
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6290 #ifdef MULE
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6291 const unsigned char *p1_end = s1 + len;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6292 const unsigned char *p2_end = s2 + len;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6293
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6294 while (p1 != p1_end && p2 != p2_end)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6295 {
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6296 Emchar p1_ch, p2_ch;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6297
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6298 p1_ch = charptr_emchar (p1);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6299 p2_ch = charptr_emchar (p2);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6300
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6301 if (RE_TRANSLATE (p1_ch)
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6302 != RE_TRANSLATE (p2_ch))
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6303 return 1;
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6304 INC_CHARPTR (p1);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6305 INC_CHARPTR (p2);
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6306 }
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6307 #else /* not MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6308 while (len)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6309 {
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6310 if (RE_TRANSLATE (*p1++) != RE_TRANSLATE (*p2++)) return 1;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6311 len--;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6312 }
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6313 #endif /* MULE */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6314 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6315 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6316
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6317 /* Entry points for GNU code. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6318
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6319 /* re_compile_pattern is the GNU regular expression compiler: it
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6320 compiles PATTERN (of length SIZE) and puts the result in BUFP.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6321 Returns 0 if the pattern was valid, otherwise an error string.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6322
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6323 Assumes the `allocated' (and perhaps `buffer') and `translate' fields
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6324 are set in BUFP on entry.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6325
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6326 We call regex_compile to do the actual compilation. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6327
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6328 const char *
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6329 re_compile_pattern (const char *pattern, int length,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6330 struct re_pattern_buffer *bufp)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6331 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6332 reg_errcode_t ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6333
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6334 /* GNU code is written to assume at least RE_NREGS registers will be set
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6335 (and at least one extra will be -1). */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6336 bufp->regs_allocated = REGS_UNALLOCATED;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6337
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6338 /* And GNU code determines whether or not to get register information
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6339 by passing null for the REGS argument to re_match, etc., not by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6340 setting no_sub. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6341 bufp->no_sub = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6342
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6343 /* Match anchors at newline. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6344 bufp->newline_anchor = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6345
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6346 ret = regex_compile ((unsigned char *) pattern, length, re_syntax_options, bufp);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6347
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6348 if (!ret)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6349 return NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6350 return gettext (re_error_msgid[(int) ret]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6351 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6352
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6353 /* Entry points compatible with 4.2 BSD regex library. We don't define
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6354 them unless specifically requested. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6355
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6356 #ifdef _REGEX_RE_COMP
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6357
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6358 /* BSD has one and only one pattern buffer. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6359 static struct re_pattern_buffer re_comp_buf;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6360
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6361 char *
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6362 re_comp (const char *s)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6363 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6364 reg_errcode_t ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6365
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6366 if (!s)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6367 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6368 if (!re_comp_buf.buffer)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6369 return gettext ("No previous regular expression");
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6370 return 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6371 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6372
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6373 if (!re_comp_buf.buffer)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6374 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6375 re_comp_buf.buffer = (unsigned char *) malloc (200);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6376 if (re_comp_buf.buffer == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6377 return gettext (re_error_msgid[(int) REG_ESPACE]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6378 re_comp_buf.allocated = 200;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6379
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6380 re_comp_buf.fastmap = (char *) malloc (1 << BYTEWIDTH);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6381 if (re_comp_buf.fastmap == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6382 return gettext (re_error_msgid[(int) REG_ESPACE]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6383 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6384
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6385 /* Since `re_exec' always passes NULL for the `regs' argument, we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6386 don't need to initialize the pattern buffer fields which affect it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6387
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6388 /* Match anchors at newlines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6389 re_comp_buf.newline_anchor = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6390
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6391 ret = regex_compile ((unsigned char *)s, strlen (s), re_syntax_options, &re_comp_buf);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6392
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6393 if (!ret)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6394 return NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6395
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6396 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6397 return (char *) gettext (re_error_msgid[(int) ret]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6398 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6399
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6400
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6401 int
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6402 re_exec (const char *s)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6403 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6404 const int len = strlen (s);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6405 return
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6406 0 <= re_search (&re_comp_buf, s, len, 0, len, (struct re_registers *) 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6407 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6408 #endif /* _REGEX_RE_COMP */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6409
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6410 /* POSIX.2 functions. Don't define these for Emacs. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6411
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6412 #ifndef emacs
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6413
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6414 /* regcomp takes a regular expression as a string and compiles it.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6415
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6416 PREG is a regex_t *. We do not expect any fields to be initialized,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6417 since POSIX says we shouldn't. Thus, we set
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6418
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6419 `buffer' to the compiled pattern;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6420 `used' to the length of the compiled pattern;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6421 `syntax' to RE_SYNTAX_POSIX_EXTENDED if the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6422 REG_EXTENDED bit in CFLAGS is set; otherwise, to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6423 RE_SYNTAX_POSIX_BASIC;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6424 `newline_anchor' to REG_NEWLINE being set in CFLAGS;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6425 `fastmap' and `fastmap_accurate' to zero;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6426 `re_nsub' to the number of subexpressions in PATTERN.
502
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
6427 (non-shy of course. POSIX probably doesn't know about
7039e6323819 [xemacs-hg @ 2001-05-04 22:41:46 by ben]
ben
parents: 460
diff changeset
6428 shy ones, and in any case they should be invisible.)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6429
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6430 PATTERN is the address of the pattern string.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6431
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6432 CFLAGS is a series of bits which affect compilation.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6433
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6434 If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6435 use POSIX basic syntax.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6436
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6437 If REG_NEWLINE is set, then . and [^...] don't match newline.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6438 Also, regexec will try a match beginning after every newline.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6439
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6440 If REG_ICASE is set, then we considers upper- and lowercase
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6441 versions of letters to be equivalent when matching.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6442
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6443 If REG_NOSUB is set, then when PREG is passed to regexec, that
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6444 routine will report only success or failure, and nothing about the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6445 registers.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6446
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6447 It returns 0 if it succeeds, nonzero if it doesn't. (See regex.h for
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6448 the return codes and their meanings.) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6449
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6450 int
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6451 regcomp (regex_t *preg, const char *pattern, int cflags)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6452 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6453 reg_errcode_t ret;
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6454 unsigned int syntax
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6455 = (cflags & REG_EXTENDED) ?
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6456 RE_SYNTAX_POSIX_EXTENDED : RE_SYNTAX_POSIX_BASIC;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6457
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6458 /* regex_compile will allocate the space for the compiled pattern. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6459 preg->buffer = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6460 preg->allocated = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6461 preg->used = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6462
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6463 /* Don't bother to use a fastmap when searching. This simplifies the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6464 REG_NEWLINE case: if we used a fastmap, we'd have to put all the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6465 characters after newlines into the fastmap. This way, we just try
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6466 every character. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6467 preg->fastmap = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6468
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6469 if (cflags & REG_ICASE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6470 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6471 int i;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6472
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6473 preg->translate = (char *) malloc (CHAR_SET_SIZE);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6474 if (preg->translate == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6475 return (int) REG_ESPACE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6476
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6477 /* Map uppercase characters to corresponding lowercase ones. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6478 for (i = 0; i < CHAR_SET_SIZE; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6479 preg->translate[i] = ISUPPER (i) ? tolower (i) : i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6480 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6481 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6482 preg->translate = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6483
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6484 /* If REG_NEWLINE is set, newlines are treated differently. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6485 if (cflags & REG_NEWLINE)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6486 { /* REG_NEWLINE implies neither . nor [^...] match newline. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6487 syntax &= ~RE_DOT_NEWLINE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6488 syntax |= RE_HAT_LISTS_NOT_NEWLINE;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6489 /* It also changes the matching behavior. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6490 preg->newline_anchor = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6491 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6492 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6493 preg->newline_anchor = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6494
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6495 preg->no_sub = !!(cflags & REG_NOSUB);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6496
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6497 /* POSIX says a null character in the pattern terminates it, so we
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6498 can use strlen here in compiling the pattern. */
446
1ccc32a20af4 Import from CVS: tag r21-2-38
cvs
parents: 444
diff changeset
6499 ret = regex_compile ((unsigned char *) pattern, strlen (pattern), syntax, preg);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6500
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6501 /* POSIX doesn't distinguish between an unmatched open-group and an
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6502 unmatched close-group: both are REG_EPAREN. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6503 if (ret == REG_ERPAREN) ret = REG_EPAREN;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6504
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6505 return (int) ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6506 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6507
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6508
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6509 /* regexec searches for a given pattern, specified by PREG, in the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6510 string STRING.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6511
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6512 If NMATCH is zero or REG_NOSUB was set in the cflags argument to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6513 `regcomp', we ignore PMATCH. Otherwise, we assume PMATCH has at
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6514 least NMATCH elements, and we set them to the offsets of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6515 corresponding matched substrings.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6516
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6517 EFLAGS specifies `execution flags' which affect matching: if
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6518 REG_NOTBOL is set, then ^ does not match at the beginning of the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6519 string; if REG_NOTEOL is set, then $ does not match at the end.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6520
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6521 We return 0 if we find a match and REG_NOMATCH if not. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6522
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6523 int
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6524 regexec (const regex_t *preg, const char *string, size_t nmatch,
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6525 regmatch_t pmatch[], int eflags)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6526 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6527 int ret;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6528 struct re_registers regs;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6529 regex_t private_preg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6530 int len = strlen (string);
460
223736d75acb Import from CVS: tag r21-2-45
cvs
parents: 458
diff changeset
6531 re_bool want_reg_info = !preg->no_sub && nmatch > 0;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6532
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6533 private_preg = *preg;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6534
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6535 private_preg.not_bol = !!(eflags & REG_NOTBOL);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6536 private_preg.not_eol = !!(eflags & REG_NOTEOL);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6537
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6538 /* The user has told us exactly how many registers to return
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6539 information about, via `nmatch'. We have to pass that on to the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6540 matching routines. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6541 private_preg.regs_allocated = REGS_FIXED;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6542
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6543 if (want_reg_info)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6544 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6545 regs.num_regs = (int) nmatch;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6546 regs.start = TALLOC ((int) nmatch, regoff_t);
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6547 regs.end = TALLOC ((int) nmatch, regoff_t);
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6548 if (regs.start == NULL || regs.end == NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6549 return (int) REG_NOMATCH;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6550 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6551
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6552 /* Perform the searching operation. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6553 ret = re_search (&private_preg, string, len,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6554 /* start: */ 0, /* range: */ len,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6555 want_reg_info ? &regs : (struct re_registers *) 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6556
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6557 /* Copy the register information to the POSIX structure. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6558 if (want_reg_info)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6559 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6560 if (ret >= 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6561 {
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6562 int r;
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6563
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6564 for (r = 0; r < (int) nmatch; r++)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6565 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6566 pmatch[r].rm_so = regs.start[r];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6567 pmatch[r].rm_eo = regs.end[r];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6568 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6569 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6570
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6571 /* If we needed the temporary register info, free the space now. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6572 free (regs.start);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6573 free (regs.end);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6574 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6575
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6576 /* We want zero return to mean success, unlike `re_search'. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6577 return ret >= 0 ? (int) REG_NOERROR : (int) REG_NOMATCH;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6578 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6579
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6580
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6581 /* Returns a message corresponding to an error code, ERRCODE, returned
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6582 from either regcomp or regexec. We don't use PREG here. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6583
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6584 size_t
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6585 regerror (int errcode, const regex_t *preg, char *errbuf,
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6586 size_t errbuf_size)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6587 {
442
abe6d1db359e Import from CVS: tag r21-2-36
cvs
parents: 440
diff changeset
6588 const char *msg;
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
6589 Bytecount msg_size;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6590
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6591 if (errcode < 0
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6592 || errcode >= (int) (sizeof (re_error_msgid) /
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6593 sizeof (re_error_msgid[0])))
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6594 /* Only error codes returned by the rest of the code should be passed
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6595 to this routine. If we are given anything else, or if other regex
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6596 code generates an invalid error code, then the program has a bug.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6597 Dump core so we can fix it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6598 abort ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6599
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6600 msg = gettext (re_error_msgid[errcode]);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6601
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6602 msg_size = strlen (msg) + 1; /* Includes the null. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6603
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6604 if (errbuf_size != 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6605 {
665
fdefd0186b75 [xemacs-hg @ 2001-09-20 06:28:42 by ben]
ben
parents: 648
diff changeset
6606 if (msg_size > (Bytecount) errbuf_size)
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6607 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6608 strncpy (errbuf, msg, errbuf_size - 1);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6609 errbuf[errbuf_size - 1] = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6610 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6611 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6612 strcpy (errbuf, msg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6613 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6614
647
b39c14581166 [xemacs-hg @ 2001-08-13 04:45:47 by ben]
ben
parents: 551
diff changeset
6615 return (size_t) msg_size;
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6616 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6617
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6618
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6619 /* Free dynamically allocated space used by PREG. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6620
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6621 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6622 regfree (regex_t *preg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6623 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6624 if (preg->buffer != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6625 free (preg->buffer);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6626 preg->buffer = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6627
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6628 preg->allocated = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6629 preg->used = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6630
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6631 if (preg->fastmap != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6632 free (preg->fastmap);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6633 preg->fastmap = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6634 preg->fastmap_accurate = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6635
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6636 if (preg->translate != NULL)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6637 free (preg->translate);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6638 preg->translate = NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6639 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6640
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6641 #endif /* not emacs */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6642
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6643 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6644 Local variables:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6645 make-backup-files: t
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6646 version-control: t
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6647 trim-versions-without-asking: nil
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6648 End:
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6649 */