annotate src/extents.h @ 826:6728e641994e

[xemacs-hg @ 2002-05-05 11:30:15 by ben] syntax cache, 8-bit-format, lots of code cleanup README.packages: Update info about --package-path. i.c: Create an inheritable event and pass it on to XEmacs, so that ^C can be handled properly. Intercept ^C and signal the event. "Stop Build" in VC++ now works. bytecomp-runtime.el: Doc string changes. compat.el: Some attempts to redo this to make it truly useful and fix the "multiple versions interacting with each other" problem. Not yet done. Currently doesn't work. files.el: Use with-obsolete-variable to avoid warnings in new revert-buffer code. xemacs.mak: Split up CFLAGS into a version without flags specifying the C library. The problem seems to be that minitar depends on zlib, which depends specifically on libc.lib, not on any of the other C libraries. Unless you compile with libc.lib, you get errors -- specifically, no _errno in the other libraries, which must make it something other than an int. (#### But this doesn't seem to obtain in XEmacs, which also uses zlib, and can be linked with any of the C libraries. Maybe zlib is used differently and doesn't need errno, or maybe XEmacs provides an int errno; ... I don't understand. Makefile.in.in: Fix so that packages are around when testing. abbrev.c, alloc.c, buffer.c, buffer.h, bytecode.c, callint.c, casefiddle.c, casetab.c, casetab.h, charset.h, chartab.c, chartab.h, cmds.c, console-msw.h, console-stream.c, console-x.c, console.c, console.h, data.c, device-msw.c, device.c, device.h, dialog-msw.c, dialog-x.c, dired-msw.c, dired.c, doc.c, doprnt.c, dumper.c, editfns.c, elhash.c, emacs.c, eval.c, event-Xt.c, event-gtk.c, event-msw.c, event-stream.c, events.c, events.h, extents.c, extents.h, faces.c, file-coding.c, file-coding.h, fileio.c, fns.c, font-lock.c, frame-gtk.c, frame-msw.c, frame-x.c, frame.c, frame.h, glade.c, glyphs-gtk.c, glyphs-msw.c, glyphs-msw.h, glyphs-x.c, glyphs.c, glyphs.h, gui-msw.c, gui-x.c, gui.h, gutter.h, hash.h, indent.c, insdel.c, intl-win32.c, intl.c, keymap.c, lisp-disunion.h, lisp-union.h, lisp.h, lread.c, lrecord.h, lstream.c, lstream.h, marker.c, menubar-gtk.c, menubar-msw.c, menubar-x.c, menubar.c, minibuf.c, mule-ccl.c, mule-charset.c, mule-coding.c, mule-wnnfns.c, nas.c, objects-msw.c, objects-x.c, opaque.c, postgresql.c, print.c, process-nt.c, process-unix.c, process.c, process.h, profile.c, rangetab.c, redisplay-gtk.c, redisplay-msw.c, redisplay-output.c, redisplay-x.c, redisplay.c, redisplay.h, regex.c, regex.h, scrollbar-msw.c, search.c, select-x.c, specifier.c, specifier.h, symbols.c, symsinit.h, syntax.c, syntax.h, syswindows.h, tests.c, text.c, text.h, tooltalk.c, ui-byhand.c, ui-gtk.c, unicode.c, win32.c, window.c: Another big Ben patch. -- FUNCTIONALITY CHANGES: add partial support for 8-bit-fixed, 16-bit-fixed, and 32-bit-fixed formats. not quite done yet. (in particular, needs functions to actually convert the buffer.) NOTE: lots of changes to regex.c here. also, many new *_fmt() inline funs that take an Internal_Format argument. redo syntax cache code. make the cache per-buffer; keep the cache valid across calls to functions that use it. also keep it valid across insertions/deletions and extent changes, as much as is possible. eliminate the junky regex-reentrancy code by passing in the relevant lisp info to the regex routines as local vars. add general mechanism in extents code for signalling extent changes. fix numerous problems with the case-table implementation; yoshiki never properly transferred many algorithms from old-style to new-style case tables. redo char tables to support a default argument, so that mapping only occurs over changed args. change many chartab functions to accept Lisp_Object instead of Lisp_Char_Table *. comment out the code in font-lock.c by default, because font-lock.el no longer uses it. we should consider eliminating it entirely. Don't output bell as ^G in console-stream when not a TTY. add -mswindows-termination-handle to interface with i.c, so we can properly kill a build. add more error-checking to buffer/string macros. add some additional buffer_or_string_() funs. -- INTERFACE CHANGES AFFECTING MORE CODE: switch the arguments of write_c_string and friends to be consistent with write_fmt_string, which must have printcharfun first. change BI_* macros to BYTE_* for increased clarity; similarly for bi_* local vars. change VOID_TO_LISP to be a one-argument function. eliminate no-longer-needed CVOID_TO_LISP. -- char/string macro changes: rename MAKE_CHAR() to make_emchar() for slightly less confusion with make_char(). (The former generates an Emchar, the latter a Lisp object. Conceivably we should rename make_char() -> wrap_char() and similarly for make_int(), make_float().) Similar changes for other *CHAR* macros -- we now consistently use names with `emchar' whenever we are working with Emchars. Any remaining name with just `char' always refers to a Lisp object. rename macros with XSTRING_* to string_* except for those that reference actual fields in the Lisp_String object, following conventions used elsewhere. rename set_string_{data,length} macros (the only ones to work with a Lisp_String_* instead of a Lisp_Object) to set_lispstringp_* to make the difference clear. try to be consistent about caps vs. lowercase in macro/inline-fun names for chars and such, which wasn't the case before. we now reserve caps either for XFOO_ macros that reference object fields (e.g. XSTRING_DATA) or for things that have non-function semantics, e.g. directly modifying an arg (BREAKUP_EMCHAR) or evaluating an arg (any arg) more than once. otherwise, use lowercase. here is a summary of most of the macros/inline funs changed by all of the above changes: BYTE_*_P -> byte_*_p XSTRING_BYTE -> string_byte set_string_data/length -> set_lispstringp_data/length XSTRING_CHAR_LENGTH -> string_char_length XSTRING_CHAR -> string_emchar INTBYTE_FIRST_BYTE_P -> intbyte_first_byte_p INTBYTE_LEADING_BYTE_P -> intbyte_leading_byte_p charptr_copy_char -> charptr_copy_emchar LEADING_BYTE_* -> leading_byte_* CHAR_* -> EMCHAR_* *_CHAR_* -> *_EMCHAR_* *_CHAR -> *_EMCHAR CHARSET_BY_ -> charset_by_* BYTE_SHIFT_JIS* -> byte_shift_jis* BYTE_BIG5* -> byte_big5* REP_BYTES_BY_FIRST_BYTE -> rep_bytes_by_first_byte char_to_unicode -> emchar_to_unicode valid_char_p -> valid_emchar_p Change intbyte_strcmp -> qxestrcmp_c (duplicated functionality). -- INTERFACE CHANGES AFFECTING LESS CODE: use DECLARE_INLINE_HEADER in various places. remove '#ifdef emacs' from XEmacs-only files. eliminate CHAR_TABLE_VALUE(), which duplicated the functionality of get_char_table(). add BUFFER_TEXT_LOOP to simplify iterations over buffer text. define typedefs for signed and unsigned types of fixed sizes (INT_32_BIT, UINT_32_BIT, etc.). create ALIGN_FOR_TYPE as a higher-level interface onto ALIGN_SIZE; fix code to use it. add charptr_emchar_len to return the text length of the character pointed to by a ptr; use it in place of charcount_to_bytecount(..., 1). add emchar_len to return the text length of a given character. add types Bytexpos and Charxpos to generalize Bytebpos/Bytecount and Charbpos/Charcount, in code (particularly, the extents code and redisplay code) that works with either kind of index. rename redisplay struct params with names such as `charbpos' to e.g. `charpos' when they are e.g. a Charxpos, not a Charbpos. eliminate xxDEFUN in place of DEFUN; no longer necessary with changes awhile back to doc.c. split up big ugly combined list of EXFUNs in lisp.h on a file-by-file basis, since other prototypes are similarly split. rewrite some "*_UNSAFE" macros as inline funs and eliminate the _UNSAFE suffix. move most string code from lisp.h to text.h; the string code and text.h code is now intertwined in such a fashion that they need to be in the same place and partially interleaved. (you can't create forward references for inline funs) automated/lisp-tests.el, automated/symbol-tests.el, automated/test-harness.el: Fix test harness to output FAIL messages to stderr when in batch mode. Fix up some problems in lisp-tests/symbol-tests that were causing spurious failures.
author ben
date Sun, 05 May 2002 11:33:57 +0000
parents 6504113e7c2d
children 79c6ff3eef26
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1 /* Copyright (c) 1994, 1995 Free Software Foundation.
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2 Copyright (c) 1995, 1996 Ben Wing.
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4 This file is part of XEmacs.
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5
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6 XEmacs is free software; you can redistribute it and/or modify it
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7 under the terms of the GNU General Public License as published by the
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8 Free Software Foundation; either version 2, or (at your option) any
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9 later version.
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10
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11 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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12 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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14 for more details.
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16 You should have received a copy of the GNU General Public License
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17 along with XEmacs; see the file COPYING. If not, write to
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18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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19 Boston, MA 02111-1307, USA. */
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20
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21 /* Synched up with: Not in FSF. */
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23 #ifndef INCLUDED_extents_h_
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24 #define INCLUDED_extents_h_
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25
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26 DECLARE_LRECORD (extent, struct extent);
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27 #define XEXTENT(x) XRECORD (x, extent, struct extent)
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28 #define wrap_extent(p) wrap_record (p, extent)
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29 #define EXTENTP(x) RECORDP (x, extent)
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30 #define CHECK_EXTENT(x) CHECK_RECORD (x, extent)
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31 #define CONCHECK_EXTENT(x) CONCHECK_RECORD (x, extent)
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32
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33 /* the layouts for glyphs (extent->flags.glyph_layout). Must fit in 2 bits. */
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34 typedef enum glyph_layout
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35 {
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36 GL_TEXT,
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37 GL_OUTSIDE_MARGIN,
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38 GL_INSIDE_MARGIN,
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39 GL_WHITESPACE
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40 } glyph_layout;
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41
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42 struct extent
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43 {
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44 struct lrecord_header lheader;
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45
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46 Memxpos start;
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47 Memxpos end;
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48 Lisp_Object object; /* A buffer, string, Qnil (extent detached from no
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49 buffer), Qt (destroyed extent) */
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50
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51 /* Extent properties are conceptually a plist, but the most common
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52 props are implemented as bits instead of conses. */
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53 struct
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54 {
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55 Lisp_Object face;
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56
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57 /* These flags are simply an optimization for common boolean properties
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58 which go onto the extent's property list. Any of them would work if
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59 done in the normal way, but the space savings of doing these in this
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60 way is significant. Note that if you add a flag, there are numerous
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61 places in extents.c that need to know about it.
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62
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63 Another consideration is that some of these properties are accessed
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64 during redisplay, so it's good for access to them to be fast (a bit
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65 reference instead of a search down a plist).
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66
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67 `begin_glyph_layout' and `end_glyph_layout' are unusual in that
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68 they have 4 states instead of 2.
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69
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70 Other special extent properties are stored in an auxiliary
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71 structure that sits at the beginning of the plist. The has_aux
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72 flag indicates whether this structure exists. The has_parent
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73 flag is an optimization indicating whether the extent has a parent
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74 (this could also be determined by looking in the aux structure). */
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75
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76 enum_field (glyph_layout) begin_glyph_layout :2;
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77 /* 2 text, margins, or whitespace */
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78 enum_field (glyph_layout) end_glyph_layout :2;
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79 /* 4 text, margins, or whitespace */
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80 unsigned int has_parent :1; /* 5 extent has a parent */
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81 unsigned int has_aux :1; /* 6 extent has an aux. structure */
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82 unsigned int start_open :1; /* 7 insertion behavior at start */
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83 unsigned int end_open :1; /* 8 insertion behavior at end */
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84 unsigned int unique :1; /* 9 there may be only one attached */
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85 unsigned int duplicable :1; /* 10 copied to strings by kill/undo */
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86 unsigned int detachable :1; /* 11 extent detaches if text deleted */
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87 unsigned int internal :1; /* 12 used by map-extents etc. */
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88 unsigned int in_red_event :1; /* 13 An event has been spawned for
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89 initial redisplay.
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90 (not exported to lisp) */
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91 unsigned int unused16 :1; /* 16 unused bits */
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92 /* --- Adding more flags will cause the extent struct to grow by another
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93 word. It's not clear that this would make a difference, however,
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94 because on 32-bit machines things tend to get allocated in chunks
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95 of 4 bytes. */
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96 } flags;
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97 /* The plist may have an auxiliary structure as its first element */
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98 Lisp_Object plist;
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99 };
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100
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101 /* Basic properties of an extent (not affected by the extent's parent) */
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102 #define extent_object(e) ((e)->object)
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103 #define extent_start(e) ((e)->start + 0)
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104 #define extent_end(e) ((e)->end + 0)
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105 #define set_extent_start(e, val) ((void) ((e)->start = (val)))
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106 #define set_extent_end(e, val) ((void) ((e)->end = (val)))
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107 #define extent_endpoint(e, endp) ((endp) ? extent_end (e) : extent_start (e))
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108 #define set_extent_endpoint(e, val, endp) \
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109 ((endp) ? set_extent_end (e, val) : set_extent_start (e, val))
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110 #define extent_detached_p(e) (extent_start (e) < 0)
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111
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112 void set_extent_endpoints (EXTENT extent, Bytexpos s, Bytexpos e,
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113 Lisp_Object object);
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114
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115 /* Additional information that may be present in an extent. The idea is
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116 that fast access is provided to this information, but since (hopefully)
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117 most extents won't have this set on them, we usually don't need to
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118 have this structure around and thus the size of an extent is smaller. */
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119
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120 typedef struct extent_auxiliary extent_auxiliary;
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121 struct extent_auxiliary
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122 {
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123 struct lcrecord_header header;
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124
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125 Lisp_Object begin_glyph;
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126 Lisp_Object end_glyph;
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127 Lisp_Object parent;
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128 /* We use a weak list here. Originally I didn't do this and
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129 depended on having the extent's finalization method remove
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130 itself from its parent's children list. This runs into
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131 lots and lots of problems though because everything is in
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132 a really really bizarre state when an extent's finalization
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133 method is called (it happens in sweep_extents() by way of
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134 ADDITIONAL_FREE_extent()) and it's extremely difficult to
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135 avoid getting hosed by just-freed objects. */
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136 Lisp_Object children;
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137 Lisp_Object invisible;
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138 Lisp_Object read_only;
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139 Lisp_Object mouse_face;
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140 Lisp_Object initial_redisplay_function;
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141 Lisp_Object before_change_functions, after_change_functions;
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142 int priority;
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143 };
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144
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145 extern struct extent_auxiliary extent_auxiliary_defaults;
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146
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147 DECLARE_LRECORD (extent_auxiliary, struct extent_auxiliary);
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148 #define XEXTENT_AUXILIARY(x) \
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149 XRECORD (x, extent_auxiliary, struct extent_auxiliary)
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150 #define wrap_extent_auxiliary(p) wrap_record (p, extent_auxiliary)
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151 #define EXTENT_AUXILIARYP(x) RECORDP (x, extent_auxiliary)
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152 #define CHECK_EXTENT_AUXILIARY(x) CHECK_RECORD (x, extent_auxiliary)
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153 #define CONCHECK_EXTENT_AUXILIARY(x) CONCHECK_RECORD (x, extent_auxiliary)
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154
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155 struct extent_info
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156 {
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157 struct lcrecord_header header;
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158
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159 struct extent_list *extents;
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160 struct stack_of_extents *soe;
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161 };
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162
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163 DECLARE_LRECORD (extent_info, struct extent_info);
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164 #define XEXTENT_INFO(x) XRECORD (x, extent_info, struct extent_info)
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165 #define wrap_extent_info(p) wrap_record (p, extent_info)
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166 #define EXTENT_INFOP(x) RECORDP (x, extent_info)
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167 #define CHECK_EXTENT_INFO(x) CHECK_RECORD (x, extent_info)
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168 #define CONCHECK_EXTENT_INFO(x) CONCHECK_RECORD (x, extent_info)
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169
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170 void flush_cached_extent_info (Lisp_Object extent_info);
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171
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172 /* A "normal" field is one that is stored in the `struct flags' structure
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173 in an extent. an "aux" field is one that is stored in the extent's
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174 auxiliary structure.
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175
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176 The functions below that have `extent_no_chase' in their name operate
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177 on an extent directly (ignoring its parent), and should normally
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178 only be used on extents known not to have a parent. The other
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179 versions chase down any parent links. */
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180
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181 #define extent_no_chase_normal_field(e, field) ((e)->flags.field)
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182
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183 DECLARE_INLINE_HEADER (
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184 struct extent_auxiliary *
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185 extent_aux_or_default (EXTENT e)
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186 )
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187 {
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188 return e->flags.has_aux ?
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189 XEXTENT_AUXILIARY (XCAR (e->plist)) :
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190 & extent_auxiliary_defaults;
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191 }
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192
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193 #define extent_no_chase_aux_field(e, field) (extent_aux_or_default(e)->field)
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194
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195 #define extent_normal_field(e, field) \
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196 extent_no_chase_normal_field (extent_ancestor (e), field)
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197
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198 #define extent_aux_field(e, field) \
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199 extent_no_chase_aux_field (extent_ancestor (e), field)
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200
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201 #define set_extent_no_chase_aux_field(e, field, value) do { \
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202 EXTENT sencaf_e = (e); \
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203 if (! sencaf_e->flags.has_aux) \
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204 allocate_extent_auxiliary (sencaf_e); \
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205 XEXTENT_AUXILIARY (XCAR (sencaf_e->plist))->field = (value);\
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206 } while (0)
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207
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208 #define set_extent_no_chase_normal_field(e, field, value) \
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209 extent_no_chase_normal_field (e, field) = (value)
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210
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211 #define set_extent_aux_field(e, field, value) \
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212 set_extent_no_chase_aux_field (extent_ancestor (e), field, value)
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213
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214 #define set_extent_normal_field(e, field, value) \
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215 set_extent_no_chase_normal_field (extent_ancestor (e), field, value)
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216
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217 /* The `parent' and `children' fields are not affected by any
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218 parent links. We don't provide any settors for these fields
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219 because they need special handling and it's cleaner just to
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220 do this in the particular functions that need to do this. */
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221
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222 #define extent_parent(e) extent_no_chase_aux_field (e, parent)
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223 #define extent_children(e) extent_no_chase_aux_field (e, children)
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224
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225 EXTENT extent_ancestor_1 (EXTENT e);
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226
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227 /* extent_ancestor() chases all the parent links until there aren't any
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228 more. extent_ancestor_1() does the same thing but it a function;
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229 the following optimizes the most common case. */
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230 DECLARE_INLINE_HEADER (
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231 EXTENT
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232 extent_ancestor (EXTENT e)
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233 )
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234 {
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235 return e->flags.has_parent ? extent_ancestor_1 (e) : e;
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236 }
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237
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238 #define extent_begin_glyph(e) extent_aux_field (e, begin_glyph)
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239 #define extent_end_glyph(e) extent_aux_field (e, end_glyph)
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240 #define extent_priority(e) extent_aux_field (e, priority)
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241 #define extent_invisible(e) extent_aux_field (e, invisible)
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242 #define extent_read_only(e) extent_aux_field (e, read_only)
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243 #define extent_mouse_face(e) extent_aux_field (e, mouse_face)
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244 #define extent_initial_redisplay_function(e) extent_aux_field (e, initial_redisplay_function)
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245 #define extent_before_change_functions(e) extent_aux_field (e, before_change_functions)
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246 #define extent_after_change_functions(e) extent_aux_field (e, after_change_functions)
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247
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248 #define set_extent_begin_glyph(e, value) \
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249 set_extent_aux_field (e, begin_glyph, value)
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250 #define set_extent_end_glyph(e, value) \
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251 set_extent_aux_field (e, end_glyph, value)
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252 #define set_extent_priority(e, value) \
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253 set_extent_aux_field (e, priority, value)
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254 #define set_extent_invisible_1(e, value) \
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255 set_extent_aux_field (e, invisible, value)
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256 #define set_extent_read_only(e, value) \
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257 set_extent_aux_field (e, read_only, value)
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258 #define set_extent_mouse_face(e, value) \
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259 set_extent_aux_field (e, mouse_face, value)
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260 /* Use Fset_extent_initial_redisplay_function unless you know what you're doing */
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261 #define set_extent_initial_redisplay_function(e, value) \
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262 set_extent_aux_field (e, initial_redisplay_function, value)
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263 #define set_extent_before_change_functions(e, value) \
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264 set_extent_aux_field (e, before_change_functions, value)
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265 #define set_extent_after_change_functions(e, value) \
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266 set_extent_aux_field (e, after_change_functions, value)
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267
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268 #define extent_face(e) extent_normal_field (e, face)
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269 #define extent_begin_glyph_layout(e) ((enum glyph_layout) extent_normal_field (e, begin_glyph_layout))
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270 #define extent_end_glyph_layout(e) ((enum glyph_layout) extent_normal_field (e, end_glyph_layout))
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271 #define extent_start_open_p(e) extent_normal_field (e, start_open)
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272 #define extent_end_open_p(e) extent_normal_field (e, end_open)
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273 #define extent_unique_p(e) extent_normal_field (e, unique)
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274 #define extent_duplicable_p(e) extent_normal_field (e, duplicable)
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275 #define extent_detachable_p(e) extent_normal_field (e, detachable)
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276 #define extent_internal_p(e) extent_normal_field (e, internal)
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277 #define extent_in_red_event_p(e) extent_normal_field (e, in_red_event)
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278
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279 #define set_extent_face(e, val) \
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280 set_extent_normal_field (e, face, val)
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281 #define set_extent_begin_glyph_layout(e, val) \
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282 set_extent_normal_field (e, begin_glyph_layout, val)
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283 #define set_extent_end_glyph_layout(e, val) \
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284 set_extent_normal_field (e, end_glyph_layout, val)
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285 #define set_extent_start_open_p(e, val) \
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286 set_extent_normal_field (e, start_open, val)
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287 #define set_extent_end_open_p(e, val) \
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288 set_extent_normal_field (e, end_open, val)
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289 #define set_extent_unique_p(e, val) \
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290 set_extent_normal_field (e, unique, val)
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291 #define set_extent_duplicable_p(e, val) \
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292 set_extent_normal_field (e, duplicable, val)
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293 #define set_extent_detachable_p(e, val) \
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294 set_extent_normal_field (e, detachable, val)
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295 #define set_extent_internal_p(e, val) \
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296 set_extent_normal_field (e, internal, val)
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297 #define set_extent_in_red_event_p(e, val) \
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298 set_extent_normal_field (e, in_red_event, val)
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299
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300 void set_extent_glyph (EXTENT extent, Lisp_Object glyph, int endp,
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301 glyph_layout layout);
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302
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303 DECLARE_INLINE_HEADER (
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304 Lisp_Object *
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305 extent_no_chase_plist_addr (EXTENT e)
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306 )
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307 {
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308 return e->flags.has_aux ? &XCDR (e->plist) : &e->plist;
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309 }
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310
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311 #define extent_no_chase_plist(e) (*extent_no_chase_plist_addr (e))
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312
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313 #define extent_plist_addr(e) extent_no_chase_plist_addr (extent_ancestor (e))
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314 #define extent_plist_slot(e) extent_no_chase_plist (extent_ancestor (e))
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315
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316 /* flags for map_extents() and friends */
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317 #define ME_END_CLOSED (1 << 0)
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318 #define ME_START_OPEN (1 << 1)
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319 #define ME_ALL_EXTENTS_CLOSED (1 << 2)
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320 #define ME_ALL_EXTENTS_OPEN (2 << 2)
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321 #define ME_ALL_EXTENTS_CLOSED_OPEN (3 << 2)
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322 #define ME_ALL_EXTENTS_OPEN_CLOSED (4 << 2)
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323 #define ME_ALL_EXTENTS_MASK (7 << 2)
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324 #define ME_START_IN_REGION (1 << 5)
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325 #define ME_END_IN_REGION (2 << 5)
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326 #define ME_START_AND_END_IN_REGION (3 << 5)
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327 #define ME_START_OR_END_IN_REGION (4 << 5)
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328 #define ME_IN_REGION_MASK (7 << 5)
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329 #define ME_NEGATE_IN_REGION (1 << 8)
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330 /* the following flags are internal-only */
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331 #define ME_INCLUDE_INTERNAL (1 << 9)
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332 #define ME_MIGHT_THROW (1 << 10)
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333 #define ME_MIGHT_MODIFY_TEXT (1 << 11)
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334 #define ME_MIGHT_MODIFY_EXTENTS (1 << 12)
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335 #define ME_MIGHT_MOVE_SOE (1 << 13)
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336 #define ME_MIGHT_CALL_ELISP (ME_MIGHT_THROW | ME_MIGHT_MODIFY_TEXT | \
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337 ME_MIGHT_MODIFY_EXTENTS | ME_MIGHT_MOVE_SOE)
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338
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339
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340 #define EXTENT_LIVE_P(e) (!EQ (extent_object (e), Qt))
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341
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342 #define CHECK_LIVE_EXTENT(x) do { \
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343 CHECK_EXTENT (x); \
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344 if (!EXTENT_LIVE_P (XEXTENT (x))) \
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345 dead_wrong_type_argument (Qextent_live_p, (x)); \
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346 } while (0)
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347 #define CONCHECK_LIVE_EXTENT(x) do { \
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348 CONCHECK_EXTENT (x); \
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349 if (!EXTENT_LIVE_P (XEXTENT (x))) \
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350 x = wrong_type_argument (Qextent_live_p, (x)); \
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351 } while (0)
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352
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353
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354 extern int inside_undo;
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355 extern int in_modeline_generation;
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356
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357 struct extent_fragment *extent_fragment_new (Lisp_Object buffer_or_string,
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358 struct frame *frm);
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359 face_index extent_fragment_update (struct window *w,
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360 struct extent_fragment *ef,
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361 Bytexpos pos, Lisp_Object last_glyph);
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362 void extent_fragment_delete (struct extent_fragment *ef);
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363
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364 /* from alloc.c */
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365 struct extent *allocate_extent (void);
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366
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367 void allocate_extent_auxiliary (EXTENT ext);
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368 void init_buffer_extents (struct buffer *b);
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369 void uninit_buffer_extents (struct buffer *b);
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370
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371 #ifdef ERROR_CHECK_EXTENTS
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372 void sledgehammer_extent_check (Lisp_Object obj);
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373 #endif
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374
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375 #ifdef MEMORY_USAGE_STATS
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376 int compute_buffer_extent_usage (struct buffer *b,
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377 struct overhead_stats *ovstats);
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378 #endif
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379
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380 #endif /* INCLUDED_extents_h_ */