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428
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1 /* XEmacs routines to deal with syntax tables; also word and list parsing.
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2 Copyright (C) 1985-1994 Free Software Foundation, Inc.
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3 Copyright (C) 1995 Sun Microsystems, Inc.
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1296
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4 Copyright (C) 2001, 2002, 2003 Ben Wing.
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428
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5
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6 This file is part of XEmacs.
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7
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8 XEmacs is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 XEmacs is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with XEmacs; see the file COPYING. If not, write to
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20 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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21 Boston, MA 02111-1307, USA. */
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22
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23 /* Synched up with: FSF 19.28. */
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24
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25 /* This file has been Mule-ized. */
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26
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27 #include <config.h>
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28 #include "lisp.h"
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29
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30 #include "buffer.h"
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31 #include "syntax.h"
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460
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32 #include "extents.h"
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428
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33
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34 /* Here is a comment from Ken'ichi HANDA <handa@etl.go.jp>
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35 explaining the purpose of the Sextword syntax category:
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36
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37 Japanese words are not separated by spaces, which makes finding word
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38 boundaries very difficult. Theoretically it's impossible without
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39 using natural language processing techniques. But, by defining
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40 pseudo-words as below (much simplified for letting you understand it
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41 easily) for Japanese, we can have a convenient forward-word function
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42 for Japanese.
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43
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44 A Japanese word is a sequence of characters that consists of
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45 zero or more Kanji characters followed by zero or more
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46 Hiragana characters.
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47
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48 Then, the problem is that now we can't say that a sequence of
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49 word-constituents makes up a WORD. For instance, both Hiragana "A"
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50 and Kanji "KAN" are word-constituents but the sequence of these two
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51 letters can't be a single word.
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52
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53 So, we introduced Sextword for Japanese letters. A character of
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54 Sextword is a word-constituent but a word boundary may exist between
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55 two such characters. */
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56
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57 /* Mule 2.4 doesn't seem to have Sextword - I'm removing it -- mrb */
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58 /* Recovered by tomo */
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59
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460
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60 #define ST_COMMENT_STYLE 0x101
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61 #define ST_STRING_STYLE 0x102
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62
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63 Lisp_Object Qsyntax_table;
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64 int lookup_syntax_properties;
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65
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428
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66 Lisp_Object Qsyntax_table_p;
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67
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68 int words_include_escapes;
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69
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70 int parse_sexp_ignore_comments;
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71
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72 /* The following two variables are provided to tell additional information
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73 to the regex routines. We do it this way rather than change the
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74 arguments to re_search_2() in an attempt to maintain some call
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75 compatibility with other versions of the regex code. */
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76
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77 /* Tell the regex routines not to QUIT. Normally there is a QUIT
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78 each iteration in re_search_2(). */
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79 int no_quit_in_re_search;
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80
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826
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81 /* The standard syntax table is stored where it will automatically
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82 be used in all new buffers. */
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428
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83 Lisp_Object Vstandard_syntax_table;
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84
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85 Lisp_Object Vsyntax_designator_chars_string;
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86
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826
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87 Lisp_Object Vtemp_table_for_use_updating_syntax_tables;
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88
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1296
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89 /* A value that is guaranteed not be in a syntax table. */
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90 Lisp_Object Vbogus_syntax_table_value;
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91
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826
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92 static void syntax_cache_table_was_changed (struct buffer *buf);
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93
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428
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94 /* This is the internal form of the parse state used in parse-partial-sexp. */
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95
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96 struct lisp_parse_state
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97 {
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98 int depth; /* Depth at end of parsing */
|
|
867
|
99 Ichar instring; /* -1 if not within string, else desired terminator */
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428
|
100 int incomment; /* Nonzero if within a comment at end of parsing */
|
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460
|
101 int comstyle; /* comment style a=0, or b=1, or ST_COMMENT_STYLE */
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428
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102 int quoted; /* Nonzero if just after an escape char at end of
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103 parsing */
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665
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104 Charbpos thislevelstart;/* Char number of most recent start-of-expression
|
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428
|
105 at current level */
|
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665
|
106 Charbpos prevlevelstart;/* Char number of start of containing expression */
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107 Charbpos location; /* Char number at which parsing stopped */
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428
|
108 int mindepth; /* Minimum depth seen while scanning */
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826
|
109 Charbpos comstr_start;/* Position just after last comment/string starter */
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110 Lisp_Object levelstarts;/* Char numbers of starts-of-expression
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111 of levels (starting from outermost). */
|
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428
|
112 };
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113
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114 /* These variables are a cache for finding the start of a defun.
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115 find_start_pos is the place for which the defun start was found.
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116 find_start_value is the defun start position found for it.
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117 find_start_buffer is the buffer it was found in.
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118 find_start_begv is the BEGV value when it was found.
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119 find_start_modiff is the value of MODIFF when it was found. */
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120
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665
|
121 static Charbpos find_start_pos;
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|
122 static Charbpos find_start_value;
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428
|
123 static struct buffer *find_start_buffer;
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665
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124 static Charbpos find_start_begv;
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428
|
125 static int find_start_modiff;
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126
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127 /* Find a defun-start that is the last one before POS (or nearly the last).
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128 We record what we find, so that another call in the same area
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129 can return the same value right away. */
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130
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665
|
131 static Charbpos
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132 find_defun_start (struct buffer *buf, Charbpos pos)
|
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428
|
133 {
|
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665
|
134 Charbpos tem;
|
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826
|
135 struct syntax_cache *scache;
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136
|
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428
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137 /* Use previous finding, if it's valid and applies to this inquiry. */
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138 if (buf == find_start_buffer
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139 /* Reuse the defun-start even if POS is a little farther on.
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140 POS might be in the next defun, but that's ok.
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141 Our value may not be the best possible, but will still be usable. */
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142 && pos <= find_start_pos + 1000
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143 && pos >= find_start_value
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144 && BUF_BEGV (buf) == find_start_begv
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145 && BUF_MODIFF (buf) == find_start_modiff)
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146 return find_start_value;
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147
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148 /* Back up to start of line. */
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149 tem = find_next_newline (buf, pos, -1);
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150
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826
|
151 scache = setup_buffer_syntax_cache (buf, tem, 1);
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428
|
152 while (tem > BUF_BEGV (buf))
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|
|
153 {
|
|
826
|
154 UPDATE_SYNTAX_CACHE_BACKWARD (scache, tem);
|
|
460
|
155
|
|
428
|
156 /* Open-paren at start of line means we found our defun-start. */
|
|
826
|
157 if (SYNTAX_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, tem)) == Sopen)
|
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428
|
158 break;
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|
159 /* Move to beg of previous line. */
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|
160 tem = find_next_newline (buf, tem, -2);
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|
161 }
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162
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163 /* Record what we found, for the next try. */
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164 find_start_value = tem;
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165 find_start_buffer = buf;
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166 find_start_modiff = BUF_MODIFF (buf);
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167 find_start_begv = BUF_BEGV (buf);
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168 find_start_pos = pos;
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169
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170 return find_start_value;
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171 }
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172
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173 DEFUN ("syntax-table-p", Fsyntax_table_p, 1, 1, 0, /*
|
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444
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174 Return t if OBJECT is a syntax table.
|
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428
|
175 Any vector of 256 elements will do.
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176 */
|
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444
|
177 (object))
|
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428
|
178 {
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444
|
179 return (CHAR_TABLEP (object)
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|
180 && XCHAR_TABLE_TYPE (object) == CHAR_TABLE_TYPE_SYNTAX)
|
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428
|
181 ? Qt : Qnil;
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182 }
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183
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184 static Lisp_Object
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185 check_syntax_table (Lisp_Object obj, Lisp_Object default_)
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186 {
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187 if (NILP (obj))
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188 obj = default_;
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189 while (NILP (Fsyntax_table_p (obj)))
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190 obj = wrong_type_argument (Qsyntax_table_p, obj);
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191 return obj;
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|
192 }
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193
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194 DEFUN ("syntax-table", Fsyntax_table, 0, 1, 0, /*
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195 Return the current syntax table.
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|
196 This is the one specified by the current buffer, or by BUFFER if it
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197 is non-nil.
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|
198 */
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199 (buffer))
|
|
|
200 {
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|
|
201 return decode_buffer (buffer, 0)->syntax_table;
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|
202 }
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203
|
|
826
|
204 #ifdef DEBUG_XEMACS
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205
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|
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206 DEFUN ("mirror-syntax-table", Fmirror_syntax_table, 0, 1, 0, /*
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|
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207 Return the current mirror syntax table, for debugging purposes.
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|
|
208 This is the one specified by the current buffer, or by BUFFER if it
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|
|
209 is non-nil.
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|
|
210 */
|
|
|
211 (buffer))
|
|
|
212 {
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|
|
213 return decode_buffer (buffer, 0)->mirror_syntax_table;
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|
|
214 }
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215
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|
|
216 DEFUN ("syntax-cache-info", Fsyntax_cache_info, 0, 1, 0, /*
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|
|
217 Return info about the syntax cache in BUFFER.
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|
|
218 BUFFER defaults to the current buffer if nil.
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|
|
219 */
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220 (buffer))
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|
|
221 {
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|
|
222 struct buffer *buf = decode_buffer (buffer, 0);
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|
|
223 struct syntax_cache *cache = buf->syntax_cache;
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224 return list4 (cache->start, cache->end, make_int (cache->prev_change),
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|
|
225 make_int (cache->next_change));
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|
|
226 }
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227
|
|
|
228 #endif /* DEBUG_XEMACS */
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229
|
|
428
|
230 DEFUN ("standard-syntax-table", Fstandard_syntax_table, 0, 0, 0, /*
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|
|
231 Return the standard syntax table.
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|
|
232 This is the one used for new buffers.
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|
233 */
|
|
|
234 ())
|
|
|
235 {
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|
|
236 return Vstandard_syntax_table;
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|
|
237 }
|
|
|
238
|
|
|
239 DEFUN ("copy-syntax-table", Fcopy_syntax_table, 0, 1, 0, /*
|
|
444
|
240 Return a new syntax table which is a copy of SYNTAX-TABLE.
|
|
|
241 SYNTAX-TABLE defaults to the standard syntax table.
|
|
428
|
242 */
|
|
444
|
243 (syntax_table))
|
|
428
|
244 {
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|
|
245 if (NILP (Vstandard_syntax_table))
|
|
|
246 return Fmake_char_table (Qsyntax);
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|
|
247
|
|
444
|
248 syntax_table = check_syntax_table (syntax_table, Vstandard_syntax_table);
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|
|
249 return Fcopy_char_table (syntax_table);
|
|
428
|
250 }
|
|
|
251
|
|
|
252 DEFUN ("set-syntax-table", Fset_syntax_table, 1, 2, 0, /*
|
|
444
|
253 Select SYNTAX-TABLE as the new syntax table for BUFFER.
|
|
428
|
254 BUFFER defaults to the current buffer if omitted.
|
|
|
255 */
|
|
444
|
256 (syntax_table, buffer))
|
|
428
|
257 {
|
|
|
258 struct buffer *buf = decode_buffer (buffer, 0);
|
|
444
|
259 syntax_table = check_syntax_table (syntax_table, Qnil);
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|
|
260 buf->syntax_table = syntax_table;
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|
|
261 buf->mirror_syntax_table = XCHAR_TABLE (syntax_table)->mirror_table;
|
|
826
|
262 syntax_cache_table_was_changed (buf);
|
|
428
|
263 /* Indicate that this buffer now has a specified syntax table. */
|
|
|
264 buf->local_var_flags |= XINT (buffer_local_flags.syntax_table);
|
|
444
|
265 return syntax_table;
|
|
428
|
266 }
|
|
|
267
|
|
826
|
268
|
|
|
269 static void
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|
|
270 init_syntax_cache (struct syntax_cache *cache, Lisp_Object object,
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|
|
271 struct buffer *buffer, int infinite)
|
|
|
272 {
|
|
|
273 xzero (*cache);
|
|
|
274 cache->object = object;
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|
|
275 cache->buffer = buffer;
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|
|
276 cache->no_syntax_table_prop = 1;
|
|
1296
|
277 cache->syntax_table =
|
|
|
278 BUFFER_SYNTAX_TABLE (cache->buffer);
|
|
|
279 cache->mirror_table =
|
|
826
|
280 BUFFER_MIRROR_SYNTAX_TABLE (cache->buffer);
|
|
|
281 cache->start = Qnil;
|
|
|
282 cache->end = Qnil;
|
|
|
283 if (infinite)
|
|
|
284 {
|
|
|
285 cache->prev_change = EMACS_INT_MIN;
|
|
|
286 cache->next_change = EMACS_INT_MAX;
|
|
|
287 }
|
|
|
288 else
|
|
|
289 {
|
|
|
290 cache->prev_change = -1;
|
|
|
291 cache->next_change = -1;
|
|
|
292 }
|
|
|
293 }
|
|
|
294
|
|
|
295 struct syntax_cache *
|
|
|
296 setup_syntax_cache (struct syntax_cache *cache, Lisp_Object object,
|
|
|
297 struct buffer *buffer, Charxpos from, int count)
|
|
|
298 {
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|
|
299 if (BUFFERP (object))
|
|
|
300 cache = XBUFFER (object)->syntax_cache;
|
|
|
301 if (!lookup_syntax_properties)
|
|
|
302 init_syntax_cache (cache, object, buffer, 1);
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|
|
303 else if (!BUFFERP (object))
|
|
|
304 init_syntax_cache (cache, object, buffer, 0);
|
|
|
305 if (lookup_syntax_properties)
|
|
|
306 {
|
|
|
307 if (count <= 0)
|
|
|
308 {
|
|
|
309 from--;
|
|
|
310 from = buffer_or_string_clip_to_accessible_byte (cache->object,
|
|
|
311 from);
|
|
|
312 }
|
|
|
313 if (!(from >= cache->prev_change && from < cache->next_change))
|
|
|
314 update_syntax_cache (cache, from, count);
|
|
|
315 }
|
|
1296
|
316 #ifdef NOT_WORTH_THE_EFFORT
|
|
|
317 update_mirror_syntax_if_dirty (cache->mirror_table);
|
|
|
318 #endif /* NOT_WORTH_THE_EFFORT */
|
|
826
|
319 return cache;
|
|
|
320 }
|
|
|
321
|
|
|
322 struct syntax_cache *
|
|
|
323 setup_buffer_syntax_cache (struct buffer *buffer, Charxpos from, int count)
|
|
|
324 {
|
|
|
325 return setup_syntax_cache (NULL, wrap_buffer (buffer), buffer, from, count);
|
|
|
326 }
|
|
|
327
|
|
1296
|
328 static const struct memory_description syntax_cache_description_1 [] = {
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|
|
329 { XD_LISP_OBJECT, offsetof (struct syntax_cache, object) },
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|
|
330 { XD_LISP_OBJECT, offsetof (struct syntax_cache, buffer) },
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|
|
331 { XD_LISP_OBJECT, offsetof (struct syntax_cache, syntax_table) },
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|
|
332 { XD_LISP_OBJECT, offsetof (struct syntax_cache, mirror_table) },
|
|
|
333 { XD_LISP_OBJECT, offsetof (struct syntax_cache, start) },
|
|
|
334 { XD_LISP_OBJECT, offsetof (struct syntax_cache, end) },
|
|
|
335 { XD_END }
|
|
|
336 };
|
|
|
337
|
|
|
338 const struct sized_memory_description syntax_cache_description = {
|
|
|
339 sizeof (struct syntax_cache),
|
|
|
340 syntax_cache_description_1
|
|
|
341 };
|
|
|
342
|
|
826
|
343 void
|
|
|
344 mark_buffer_syntax_cache (struct buffer *buf)
|
|
|
345 {
|
|
|
346 struct syntax_cache *cache = buf->syntax_cache;
|
|
|
347 if (!cache) /* Vbuffer_defaults and such don't have caches */
|
|
|
348 return;
|
|
|
349 mark_object (cache->object);
|
|
|
350 if (cache->buffer)
|
|
|
351 mark_object (wrap_buffer (cache->buffer));
|
|
1296
|
352 mark_object (cache->syntax_table);
|
|
|
353 mark_object (cache->mirror_table);
|
|
826
|
354 mark_object (cache->start);
|
|
|
355 mark_object (cache->end);
|
|
|
356 }
|
|
460
|
357
|
|
826
|
358 static void
|
|
|
359 reset_buffer_cache_range (struct syntax_cache *cache, Lisp_Object buffer)
|
|
|
360 {
|
|
|
361 Fset_marker (cache->start, make_int (1), buffer);
|
|
|
362 Fset_marker (cache->end, make_int (1), buffer);
|
|
|
363 Fset_marker_insertion_type (cache->start, Qt);
|
|
|
364 Fset_marker_insertion_type (cache->end, Qnil);
|
|
|
365 cache->prev_change = -1;
|
|
|
366 cache->next_change = -1;
|
|
|
367 }
|
|
|
368
|
|
|
369 void
|
|
|
370 init_buffer_syntax_cache (struct buffer *buf)
|
|
|
371 {
|
|
|
372 struct syntax_cache *cache;
|
|
|
373 buf->syntax_cache = xnew_and_zero (struct syntax_cache);
|
|
|
374 cache = buf->syntax_cache;
|
|
|
375 cache->object = wrap_buffer (buf);
|
|
|
376 cache->buffer = buf;
|
|
|
377 cache->no_syntax_table_prop = 1;
|
|
1296
|
378 cache->syntax_table = BUFFER_SYNTAX_TABLE (cache->buffer);
|
|
|
379 cache->mirror_table = BUFFER_MIRROR_SYNTAX_TABLE (cache->buffer);
|
|
826
|
380 cache->start = Fmake_marker ();
|
|
|
381 cache->end = Fmake_marker ();
|
|
|
382 reset_buffer_cache_range (cache, cache->object);
|
|
|
383 }
|
|
|
384
|
|
|
385 void
|
|
|
386 uninit_buffer_syntax_cache (struct buffer *buf)
|
|
|
387 {
|
|
|
388 xfree (buf->syntax_cache);
|
|
|
389 buf->syntax_cache = 0;
|
|
|
390 }
|
|
|
391
|
|
|
392
|
|
|
393 static void
|
|
|
394 syntax_cache_table_was_changed (struct buffer *buf)
|
|
|
395 {
|
|
|
396 struct syntax_cache *cache = buf->syntax_cache;
|
|
|
397 if (cache->no_syntax_table_prop)
|
|
1296
|
398 {
|
|
|
399 cache->syntax_table =
|
|
|
400 BUFFER_SYNTAX_TABLE (buf);
|
|
|
401 cache->mirror_table =
|
|
|
402 BUFFER_MIRROR_SYNTAX_TABLE (buf);
|
|
|
403 }
|
|
826
|
404 }
|
|
|
405
|
|
|
406 /* The syntax-table property on the range covered by EXTENT may be changing,
|
|
|
407 either because EXTENT has a syntax-table property and is being attached
|
|
|
408 or detached (this includes having its endpoints changed), or because
|
|
|
409 the value of EXTENT's syntax-table property is changing. */
|
|
|
410
|
|
|
411 void
|
|
|
412 signal_syntax_table_extent_changed (EXTENT extent)
|
|
|
413 {
|
|
872
|
414 Lisp_Object buffer = Fextent_object (wrap_extent (extent));
|
|
826
|
415 if (BUFFERP (buffer))
|
|
|
416 {
|
|
|
417 struct syntax_cache *cache = XBUFFER (buffer)->syntax_cache;
|
|
|
418 Bytexpos start = extent_endpoint_byte (extent, 0);
|
|
|
419 Bytexpos end = extent_endpoint_byte (extent, 1);
|
|
|
420 Bytexpos start2 = byte_marker_position (cache->start);
|
|
|
421 Bytexpos end2 = byte_marker_position (cache->end);
|
|
|
422 /* If the extent is entirely before or entirely after the cache range,
|
|
|
423 it doesn't overlap. Otherwise, invalidate the range. */
|
|
|
424 if (!(end < start2 || start > end2))
|
|
|
425 reset_buffer_cache_range (cache, buffer);
|
|
|
426 }
|
|
|
427 }
|
|
|
428
|
|
|
429 /* Extents have been adjusted for insertion or deletion, so we need to
|
|
|
430 refetch the start and end position of the extent */
|
|
|
431 void
|
|
|
432 signal_syntax_table_extent_adjust (struct buffer *buf)
|
|
|
433 {
|
|
|
434 struct syntax_cache *cache = buf->syntax_cache;
|
|
|
435 /* If the cache was invalid before, leave it that way. We only want
|
|
|
436 to update the limits of validity when they were actually valid. */
|
|
|
437 if (cache->prev_change < 0)
|
|
|
438 return;
|
|
|
439 cache->prev_change = marker_position (cache->start);
|
|
|
440 cache->next_change = marker_position (cache->end);
|
|
|
441 }
|
|
460
|
442
|
|
|
443 /*
|
|
|
444 Update syntax_cache to an appropriate setting for position POS
|
|
|
445
|
|
|
446 The sign of COUNT gives the relative position of POS wrt the
|
|
|
447 previously valid interval. (not currently used)
|
|
|
448
|
|
|
449 `syntax_cache.*_change' are the next and previous positions at
|
|
|
450 which syntax_code and c_s_t will need to be recalculated.
|
|
|
451
|
|
|
452 #### Currently this code uses 'get-char-property', which will
|
|
|
453 return the "last smallest" extent at a given position. In cases
|
|
|
454 where overlapping extents are defined, this code will simply use
|
|
|
455 whatever is returned by get-char-property.
|
|
|
456
|
|
|
457 It might be worth it at some point to merge provided syntax tables
|
|
826
|
458 outward to the current buffer (#### rewrite in English please?!). */
|
|
460
|
459
|
|
|
460 void
|
|
826
|
461 update_syntax_cache (struct syntax_cache *cache, Charxpos cpos, int count)
|
|
460
|
462 {
|
|
|
463 Lisp_Object tmp_table;
|
|
826
|
464 Bytexpos pos;
|
|
|
465 Bytexpos lim;
|
|
|
466 Bytexpos next, prev;
|
|
|
467 int at_begin = 0, at_end = 0;
|
|
460
|
468
|
|
826
|
469 if (NILP (cache->object))
|
|
|
470 return;
|
|
|
471
|
|
|
472 pos = buffer_or_string_charxpos_to_bytexpos (cache->object, cpos);
|
|
|
473
|
|
|
474 tmp_table = get_char_property (pos, Qsyntax_table, cache->object,
|
|
|
475 EXTENT_AT_AFTER, 0);
|
|
|
476 lim = next_single_property_change (pos, Qsyntax_table, cache->object,
|
|
|
477 -1);
|
|
|
478 if (lim < 0)
|
|
460
|
479 {
|
|
826
|
480 next = buffer_or_string_absolute_end_byte (cache->object);
|
|
|
481 at_begin = 1;
|
|
460
|
482 }
|
|
826
|
483 else
|
|
|
484 next = lim;
|
|
460
|
485
|
|
826
|
486 if (pos < buffer_or_string_absolute_end_byte (cache->object))
|
|
|
487 pos = next_bytexpos (cache->object, pos);
|
|
|
488 lim = previous_single_property_change (pos, Qsyntax_table, cache->object,
|
|
|
489 -1);
|
|
|
490 if (lim < 0)
|
|
460
|
491 {
|
|
826
|
492 prev = buffer_or_string_absolute_begin_byte (cache->object);
|
|
|
493 at_end = 1;
|
|
460
|
494 }
|
|
|
495 else
|
|
826
|
496 prev = lim;
|
|
460
|
497
|
|
826
|
498 cache->prev_change =
|
|
|
499 buffer_or_string_bytexpos_to_charxpos (cache->object, prev);
|
|
|
500 cache->next_change =
|
|
|
501 buffer_or_string_bytexpos_to_charxpos (cache->object, next);
|
|
460
|
502
|
|
826
|
503 if (BUFFERP (cache->object))
|
|
|
504 {
|
|
|
505 /* If we are at the beginning or end of buffer, check to see if there's
|
|
|
506 a zero-length `syntax-table' extent there (highly unlikely); if not,
|
|
|
507 then we can safely make the end closed, so it will take in newly
|
|
|
508 inserted text. (If such an extent is inserted, we will be informed
|
|
|
509 through signal_syntax_table_extent_changed().) */
|
|
|
510 Fset_marker (cache->start, make_int (cache->prev_change), cache->object);
|
|
|
511 Fset_marker_insertion_type
|
|
|
512 (cache->start,
|
|
|
513 at_begin && NILP (extent_at (prev, cache->object, Qsyntax_table,
|
|
|
514 NULL, EXTENT_AT_AT, 0))
|
|
|
515 ? Qnil : Qt);
|
|
|
516 Fset_marker (cache->end, make_int (cache->next_change), cache->object);
|
|
|
517 Fset_marker_insertion_type
|
|
|
518 (cache->end,
|
|
|
519 at_end && NILP (extent_at (next, cache->object, Qsyntax_table,
|
|
|
520 NULL, EXTENT_AT_AT, 0))
|
|
|
521 ? Qt : Qnil);
|
|
|
522 }
|
|
|
523
|
|
|
524 if (!NILP (Fsyntax_table_p (tmp_table)))
|
|
|
525 {
|
|
|
526 cache->use_code = 0;
|
|
1296
|
527 cache->syntax_table = tmp_table;
|
|
|
528 cache->mirror_table = XCHAR_TABLE (tmp_table)->mirror_table;
|
|
826
|
529 cache->no_syntax_table_prop = 0;
|
|
1296
|
530 #ifdef NOT_WORTH_THE_EFFORT
|
|
|
531 update_mirror_syntax_if_dirty (cache->mirror_table);
|
|
|
532 #endif /* NOT_WORTH_THE_EFFORT */
|
|
826
|
533 }
|
|
|
534 else if (CONSP (tmp_table) && INTP (XCAR (tmp_table)))
|
|
|
535 {
|
|
|
536 cache->use_code = 1;
|
|
|
537 cache->syntax_code = XINT (XCAR (tmp_table));
|
|
|
538 cache->no_syntax_table_prop = 0;
|
|
|
539 }
|
|
|
540 else
|
|
|
541 {
|
|
|
542 cache->use_code = 0;
|
|
|
543 cache->no_syntax_table_prop = 1;
|
|
1296
|
544 cache->syntax_table = BUFFER_SYNTAX_TABLE (cache->buffer);
|
|
|
545 cache->mirror_table = BUFFER_MIRROR_SYNTAX_TABLE (cache->buffer);
|
|
|
546 #ifdef NOT_WORTH_THE_EFFORT
|
|
|
547 update_mirror_syntax_if_dirty (cache->mirror_table);
|
|
|
548 #endif /* NOT_WORTH_THE_EFFORT */
|
|
460
|
549 }
|
|
|
550 }
|
|
|
551
|
|
428
|
552 /* Convert a letter which signifies a syntax code
|
|
|
553 into the code it signifies.
|
|
|
554 This is used by modify-syntax-entry, and other things. */
|
|
|
555
|
|
442
|
556 const unsigned char syntax_spec_code[0400] =
|
|
428
|
557 { 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
558 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
559 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
560 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
561 (char) Swhitespace, 0377, (char) Sstring, 0377,
|
|
|
562 (char) Smath, 0377, 0377, (char) Squote,
|
|
|
563 (char) Sopen, (char) Sclose, 0377, 0377,
|
|
|
564 0377, (char) Swhitespace, (char) Spunct, (char) Scharquote,
|
|
|
565 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
566 0377, 0377, 0377, 0377,
|
|
|
567 (char) Scomment, 0377, (char) Sendcomment, 0377,
|
|
|
568 (char) Sinherit, 0377, 0377, 0377, 0377, 0377, 0377, 0377, /* @, A ... */
|
|
|
569 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
570 0377, 0377, 0377, 0377, 0377, 0377, 0377, (char) Sword,
|
|
|
571 0377, 0377, 0377, 0377, (char) Sescape, 0377, 0377, (char) Ssymbol,
|
|
|
572 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377, /* `, a, ... */
|
|
|
573 0377, 0377, 0377, 0377, 0377, 0377, 0377, 0377,
|
|
|
574 0377, 0377, 0377, 0377, 0377, 0377, 0377, (char) Sword,
|
|
460
|
575 0377, 0377, 0377, 0377, (char) Sstring_fence, 0377, 0377, 0377
|
|
428
|
576 };
|
|
|
577
|
|
460
|
578 const unsigned char syntax_code_spec[] = " .w_()'\"$\\/<>@!|";
|
|
428
|
579
|
|
|
580 DEFUN ("syntax-designator-chars", Fsyntax_designator_chars, 0, 0, 0, /*
|
|
|
581 Return a string of the recognized syntax designator chars.
|
|
|
582 The chars are ordered by their internal syntax codes, which are
|
|
|
583 numbered starting at 0.
|
|
|
584 */
|
|
|
585 ())
|
|
|
586 {
|
|
|
587 return Vsyntax_designator_chars_string;
|
|
|
588 }
|
|
|
589
|
|
|
590 DEFUN ("char-syntax", Fchar_syntax, 1, 2, 0, /*
|
|
444
|
591 Return the syntax code of CHARACTER, described by a character.
|
|
|
592 For example, if CHARACTER is a word constituent,
|
|
|
593 the character `?w' is returned.
|
|
428
|
594 The characters that correspond to various syntax codes
|
|
|
595 are listed in the documentation of `modify-syntax-entry'.
|
|
444
|
596 Optional second argument SYNTAX-TABLE defaults to the current buffer's
|
|
428
|
597 syntax table.
|
|
|
598 */
|
|
444
|
599 (character, syntax_table))
|
|
428
|
600 {
|
|
826
|
601 Lisp_Object mirrortab;
|
|
428
|
602
|
|
444
|
603 if (NILP (character))
|
|
428
|
604 {
|
|
444
|
605 character = make_char ('\000');
|
|
428
|
606 }
|
|
444
|
607 CHECK_CHAR_COERCE_INT (character);
|
|
826
|
608 syntax_table = check_syntax_table (syntax_table,
|
|
|
609 current_buffer->syntax_table);
|
|
|
610 mirrortab = XCHAR_TABLE (syntax_table)->mirror_table;
|
|
|
611 return make_char (syntax_code_spec[(int) SYNTAX (mirrortab,
|
|
|
612 XCHAR (character))]);
|
|
428
|
613 }
|
|
|
614
|
|
|
615 #ifdef MULE
|
|
|
616
|
|
|
617 enum syntaxcode
|
|
|
618 charset_syntax (struct buffer *buf, Lisp_Object charset, int *multi_p_out)
|
|
|
619 {
|
|
|
620 *multi_p_out = 1;
|
|
826
|
621 /* !!#### get this right */
|
|
428
|
622 return Spunct;
|
|
|
623 }
|
|
|
624
|
|
|
625 #endif
|
|
|
626
|
|
|
627 Lisp_Object
|
|
867
|
628 syntax_match (Lisp_Object syntax_table, Ichar ch)
|
|
428
|
629 {
|
|
826
|
630 Lisp_Object code = get_char_table (ch, syntax_table);
|
|
428
|
631 Lisp_Object code2 = code;
|
|
|
632
|
|
|
633 if (CONSP (code))
|
|
|
634 code2 = XCAR (code);
|
|
|
635 if (SYNTAX_FROM_CODE (XINT (code2)) == Sinherit)
|
|
826
|
636 code = get_char_table (ch, Vstandard_syntax_table);
|
|
428
|
637
|
|
|
638 return CONSP (code) ? XCDR (code) : Qnil;
|
|
|
639 }
|
|
|
640
|
|
|
641 DEFUN ("matching-paren", Fmatching_paren, 1, 2, 0, /*
|
|
444
|
642 Return the matching parenthesis of CHARACTER, or nil if none.
|
|
|
643 Optional second argument SYNTAX-TABLE defaults to the current buffer's
|
|
428
|
644 syntax table.
|
|
|
645 */
|
|
444
|
646 (character, syntax_table))
|
|
428
|
647 {
|
|
826
|
648 Lisp_Object mirrortab;
|
|
428
|
649 int code;
|
|
|
650
|
|
444
|
651 CHECK_CHAR_COERCE_INT (character);
|
|
826
|
652 syntax_table = check_syntax_table (syntax_table,
|
|
|
653 current_buffer->syntax_table);
|
|
|
654 mirrortab = XCHAR_TABLE (syntax_table)->mirror_table;
|
|
444
|
655 code = SYNTAX (mirrortab, XCHAR (character));
|
|
428
|
656 if (code == Sopen || code == Sclose || code == Sstring)
|
|
444
|
657 return syntax_match (syntax_table, XCHAR (character));
|
|
428
|
658 return Qnil;
|
|
|
659 }
|
|
|
660
|
|
|
661
|
|
|
662
|
|
|
663 #ifdef MULE
|
|
|
664 /* Return 1 if there is a word boundary between two word-constituent
|
|
|
665 characters C1 and C2 if they appear in this order, else return 0.
|
|
|
666 There is no word boundary between two word-constituent ASCII
|
|
|
667 characters. */
|
|
|
668 #define WORD_BOUNDARY_P(c1, c2) \
|
|
867
|
669 (!(ichar_ascii_p (c1) && ichar_ascii_p (c2)) \
|
|
428
|
670 && word_boundary_p (c1, c2))
|
|
|
671 #endif
|
|
|
672
|
|
|
673 /* Return the position across COUNT words from FROM.
|
|
|
674 If that many words cannot be found before the end of the buffer, return 0.
|
|
|
675 COUNT negative means scan backward and stop at word beginning. */
|
|
|
676
|
|
665
|
677 Charbpos
|
|
|
678 scan_words (struct buffer *buf, Charbpos from, int count)
|
|
428
|
679 {
|
|
665
|
680 Charbpos limit = count > 0 ? BUF_ZV (buf) : BUF_BEGV (buf);
|
|
867
|
681 Ichar ch0, ch1;
|
|
428
|
682 enum syntaxcode code;
|
|
826
|
683 struct syntax_cache *scache = setup_buffer_syntax_cache (buf, from, count);
|
|
460
|
684
|
|
428
|
685 /* #### is it really worth it to hand expand both cases? JV */
|
|
|
686 while (count > 0)
|
|
|
687 {
|
|
|
688 QUIT;
|
|
|
689
|
|
|
690 while (1)
|
|
|
691 {
|
|
|
692 if (from == limit)
|
|
|
693 return 0;
|
|
|
694
|
|
826
|
695 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
696 ch0 = BUF_FETCH_CHAR (buf, from);
|
|
826
|
697 code = SYNTAX_FROM_CACHE (scache, ch0);
|
|
428
|
698
|
|
442
|
699 from++;
|
|
428
|
700 if (words_include_escapes
|
|
|
701 && (code == Sescape || code == Scharquote))
|
|
|
702 break;
|
|
|
703 if (code == Sword)
|
|
|
704 break;
|
|
|
705 }
|
|
|
706
|
|
|
707 QUIT;
|
|
|
708
|
|
|
709 while (from != limit)
|
|
|
710 {
|
|
826
|
711 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
712 ch1 = BUF_FETCH_CHAR (buf, from);
|
|
826
|
713 code = SYNTAX_FROM_CACHE (scache, ch1);
|
|
428
|
714 if (!(words_include_escapes
|
|
|
715 && (code == Sescape || code == Scharquote)))
|
|
|
716 if (code != Sword
|
|
|
717 #ifdef MULE
|
|
|
718 || WORD_BOUNDARY_P (ch0, ch1)
|
|
434
|
719 #endif
|
|
428
|
720 )
|
|
|
721 break;
|
|
|
722 #ifdef MULE
|
|
|
723 ch0 = ch1;
|
|
434
|
724 #endif
|
|
428
|
725 from++;
|
|
|
726 }
|
|
|
727 count--;
|
|
|
728 }
|
|
|
729
|
|
|
730 while (count < 0)
|
|
|
731 {
|
|
|
732 QUIT;
|
|
|
733
|
|
|
734 while (1)
|
|
|
735 {
|
|
|
736 if (from == limit)
|
|
|
737 return 0;
|
|
|
738
|
|
826
|
739 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
428
|
740 ch1 = BUF_FETCH_CHAR (buf, from - 1);
|
|
826
|
741 code = SYNTAX_FROM_CACHE (scache, ch1);
|
|
460
|
742 from--;
|
|
442
|
743
|
|
428
|
744 if (words_include_escapes
|
|
|
745 && (code == Sescape || code == Scharquote))
|
|
|
746 break;
|
|
|
747 if (code == Sword)
|
|
|
748 break;
|
|
|
749 }
|
|
|
750
|
|
|
751 QUIT;
|
|
|
752
|
|
|
753 while (from != limit)
|
|
|
754 {
|
|
826
|
755 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
428
|
756 ch0 = BUF_FETCH_CHAR (buf, from - 1);
|
|
826
|
757 code = SYNTAX_FROM_CACHE (scache, ch0);
|
|
460
|
758
|
|
428
|
759 if (!(words_include_escapes
|
|
|
760 && (code == Sescape || code == Scharquote)))
|
|
|
761 if (code != Sword
|
|
|
762 #ifdef MULE
|
|
|
763 || WORD_BOUNDARY_P (ch0, ch1)
|
|
|
764 #endif
|
|
|
765 )
|
|
|
766 break;
|
|
|
767 #ifdef MULE
|
|
|
768 ch1 = ch0;
|
|
|
769 #endif
|
|
|
770 from--;
|
|
|
771 }
|
|
|
772 count++;
|
|
|
773 }
|
|
|
774
|
|
|
775 return from;
|
|
|
776 }
|
|
|
777
|
|
446
|
778 DEFUN ("forward-word", Fforward_word, 0, 2, "_p", /*
|
|
428
|
779 Move point forward COUNT words (backward if COUNT is negative).
|
|
446
|
780 Normally t is returned, but if an edge of the buffer is reached,
|
|
|
781 point is left there and nil is returned.
|
|
428
|
782
|
|
462
|
783 The characters that are moved over may be added to the current selection
|
|
|
784 \(i.e. active region) if the Shift key is held down, a motion key is used
|
|
|
785 to invoke this command, and `shifted-motion-keys-select-region' is t; see
|
|
|
786 the documentation for this variable for more details.
|
|
|
787
|
|
446
|
788 COUNT defaults to 1, and BUFFER defaults to the current buffer.
|
|
428
|
789 */
|
|
|
790 (count, buffer))
|
|
|
791 {
|
|
665
|
792 Charbpos val;
|
|
428
|
793 struct buffer *buf = decode_buffer (buffer, 0);
|
|
446
|
794 EMACS_INT n;
|
|
|
795
|
|
|
796 if (NILP (count))
|
|
|
797 n = 1;
|
|
|
798 else
|
|
|
799 {
|
|
|
800 CHECK_INT (count);
|
|
|
801 n = XINT (count);
|
|
|
802 }
|
|
428
|
803
|
|
446
|
804 val = scan_words (buf, BUF_PT (buf), n);
|
|
|
805 if (val)
|
|
428
|
806 {
|
|
446
|
807 BUF_SET_PT (buf, val);
|
|
|
808 return Qt;
|
|
|
809 }
|
|
|
810 else
|
|
|
811 {
|
|
|
812 BUF_SET_PT (buf, n > 0 ? BUF_ZV (buf) : BUF_BEGV (buf));
|
|
428
|
813 return Qnil;
|
|
|
814 }
|
|
|
815 }
|
|
|
816
|
|
|
817 static void scan_sexps_forward (struct buffer *buf,
|
|
|
818 struct lisp_parse_state *,
|
|
665
|
819 Charbpos from, Charbpos end,
|
|
428
|
820 int targetdepth, int stopbefore,
|
|
|
821 Lisp_Object oldstate,
|
|
|
822 int commentstop);
|
|
|
823
|
|
|
824 static int
|
|
665
|
825 find_start_of_comment (struct buffer *buf, Charbpos from, Charbpos stop,
|
|
460
|
826 int comstyle)
|
|
428
|
827 {
|
|
867
|
828 Ichar c;
|
|
428
|
829 enum syntaxcode code;
|
|
|
830
|
|
|
831 /* Look back, counting the parity of string-quotes,
|
|
|
832 and recording the comment-starters seen.
|
|
|
833 When we reach a safe place, assume that's not in a string;
|
|
|
834 then step the main scan to the earliest comment-starter seen
|
|
|
835 an even number of string quotes away from the safe place.
|
|
|
836
|
|
|
837 OFROM[I] is position of the earliest comment-starter seen
|
|
|
838 which is I+2X quotes from the comment-end.
|
|
|
839 PARITY is current parity of quotes from the comment end. */
|
|
|
840 int parity = 0;
|
|
867
|
841 Ichar my_stringend = 0;
|
|
428
|
842 int string_lossage = 0;
|
|
665
|
843 Charbpos comment_end = from;
|
|
|
844 Charbpos comstart_pos = 0;
|
|
428
|
845 int comstart_parity = 0;
|
|
|
846 int styles_match_p = 0;
|
|
460
|
847 /* mask to match comment styles against; for ST_COMMENT_STYLE, this
|
|
|
848 will get set to SYNTAX_COMMENT_STYLE_B, but never get checked */
|
|
|
849 int mask = comstyle ? SYNTAX_COMMENT_STYLE_B : SYNTAX_COMMENT_STYLE_A;
|
|
826
|
850 struct syntax_cache *scache = buf->syntax_cache;
|
|
428
|
851
|
|
|
852 /* At beginning of range to scan, we're outside of strings;
|
|
|
853 that determines quote parity to the comment-end. */
|
|
|
854 while (from != stop)
|
|
|
855 {
|
|
460
|
856 int syncode;
|
|
|
857
|
|
428
|
858 /* Move back and examine a character. */
|
|
|
859 from--;
|
|
826
|
860 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from);
|
|
428
|
861
|
|
|
862 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
863 syncode = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
|
864 code = SYNTAX_FROM_CODE (syncode);
|
|
428
|
865
|
|
|
866 /* is this a 1-char comment end sequence? if so, try
|
|
|
867 to see if style matches previously extracted mask */
|
|
|
868 if (code == Sendcomment)
|
|
|
869 {
|
|
|
870 styles_match_p =
|
|
460
|
871 SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode) & mask;
|
|
428
|
872 }
|
|
|
873
|
|
|
874 /* or are we looking at a 1-char comment start sequence
|
|
|
875 of the style matching mask? */
|
|
460
|
876 else if (code == Scomment)
|
|
428
|
877 {
|
|
460
|
878 styles_match_p =
|
|
|
879 SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode) & mask;
|
|
428
|
880 }
|
|
|
881
|
|
460
|
882 /* otherwise, is this a 2-char comment end or start sequence? */
|
|
|
883 else if (from > stop)
|
|
|
884 do
|
|
|
885 {
|
|
|
886 /* 2-char comment end sequence? */
|
|
|
887 if (SYNTAX_CODE_END_SECOND_P (syncode))
|
|
|
888 {
|
|
|
889 int prev_syncode;
|
|
826
|
890 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
460
|
891 prev_syncode =
|
|
826
|
892 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from - 1));
|
|
460
|
893
|
|
|
894 if (SYNTAX_CODES_END_P (prev_syncode, syncode))
|
|
|
895 {
|
|
|
896 code = Sendcomment;
|
|
|
897 styles_match_p =
|
|
826
|
898 SYNTAX_CODES_COMMENT_MASK_END (prev_syncode,
|
|
|
899 syncode) & mask;
|
|
460
|
900 from--;
|
|
826
|
901 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from);
|
|
460
|
902 c = BUF_FETCH_CHAR (buf, from);
|
|
|
903
|
|
|
904 /* Found a comment-end sequence, so skip past the
|
|
|
905 check for a comment-start */
|
|
|
906 break;
|
|
|
907 }
|
|
|
908 }
|
|
|
909
|
|
|
910 /* 2-char comment start sequence? */
|
|
|
911 if (SYNTAX_CODE_START_SECOND_P (syncode))
|
|
|
912 {
|
|
|
913 int prev_syncode;
|
|
826
|
914 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
460
|
915 prev_syncode =
|
|
826
|
916 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from - 1));
|
|
460
|
917
|
|
|
918 if (SYNTAX_CODES_START_P (prev_syncode, syncode))
|
|
|
919 {
|
|
|
920 code = Scomment;
|
|
|
921 styles_match_p =
|
|
826
|
922 SYNTAX_CODES_COMMENT_MASK_START (prev_syncode,
|
|
|
923 syncode) & mask;
|
|
460
|
924 from--;
|
|
826
|
925 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from);
|
|
460
|
926 c = BUF_FETCH_CHAR (buf, from);
|
|
|
927 }
|
|
|
928 }
|
|
|
929 } while (0);
|
|
428
|
930
|
|
|
931 /* Ignore escaped characters. */
|
|
|
932 if (char_quoted (buf, from))
|
|
|
933 continue;
|
|
|
934
|
|
|
935 /* Track parity of quotes. */
|
|
|
936 if (code == Sstring)
|
|
|
937 {
|
|
|
938 parity ^= 1;
|
|
|
939 if (my_stringend == 0)
|
|
|
940 my_stringend = c;
|
|
|
941 /* If we have two kinds of string delimiters.
|
|
|
942 There's no way to grok this scanning backwards. */
|
|
|
943 else if (my_stringend != c)
|
|
|
944 string_lossage = 1;
|
|
|
945 }
|
|
|
946
|
|
460
|
947 if (code == Sstring_fence || code == Scomment_fence)
|
|
|
948 {
|
|
|
949 parity ^= 1;
|
|
|
950 if (my_stringend == 0)
|
|
|
951 my_stringend =
|
|
|
952 code == Sstring_fence ? ST_STRING_STYLE : ST_COMMENT_STYLE;
|
|
|
953 /* If we have two kinds of string delimiters.
|
|
|
954 There's no way to grok this scanning backwards. */
|
|
|
955 else if (my_stringend != (code == Sstring_fence
|
|
|
956 ? ST_STRING_STYLE : ST_COMMENT_STYLE))
|
|
|
957 string_lossage = 1;
|
|
|
958 }
|
|
|
959
|
|
428
|
960 /* Record comment-starters according to that
|
|
|
961 quote-parity to the comment-end. */
|
|
|
962 if (code == Scomment && styles_match_p)
|
|
|
963 {
|
|
|
964 comstart_parity = parity;
|
|
|
965 comstart_pos = from;
|
|
|
966 }
|
|
|
967
|
|
|
968 /* If we find another earlier comment-ender,
|
|
|
969 any comment-starts earlier than that don't count
|
|
|
970 (because they go with the earlier comment-ender). */
|
|
|
971 if (code == Sendcomment && styles_match_p)
|
|
|
972 break;
|
|
|
973
|
|
|
974 /* Assume a defun-start point is outside of strings. */
|
|
|
975 if (code == Sopen
|
|
|
976 && (from == stop || BUF_FETCH_CHAR (buf, from - 1) == '\n'))
|
|
|
977 break;
|
|
|
978 }
|
|
|
979
|
|
|
980 if (comstart_pos == 0)
|
|
|
981 from = comment_end;
|
|
|
982 /* If the earliest comment starter
|
|
|
983 is followed by uniform paired string quotes or none,
|
|
|
984 we know it can't be inside a string
|
|
|
985 since if it were then the comment ender would be inside one.
|
|
|
986 So it does start a comment. Skip back to it. */
|
|
|
987 else if (comstart_parity == 0 && !string_lossage)
|
|
|
988 from = comstart_pos;
|
|
|
989 else
|
|
|
990 {
|
|
|
991 /* We had two kinds of string delimiters mixed up
|
|
|
992 together. Decode this going forwards.
|
|
|
993 Scan fwd from the previous comment ender
|
|
|
994 to the one in question; this records where we
|
|
|
995 last passed a comment starter. */
|
|
|
996
|
|
|
997 struct lisp_parse_state state;
|
|
|
998 scan_sexps_forward (buf, &state, find_defun_start (buf, comment_end),
|
|
|
999 comment_end - 1, -10000, 0, Qnil, 0);
|
|
|
1000 if (state.incomment)
|
|
460
|
1001 from = state.comstr_start;
|
|
428
|
1002 else
|
|
|
1003 /* We can't grok this as a comment; scan it normally. */
|
|
|
1004 from = comment_end;
|
|
826
|
1005 UPDATE_SYNTAX_CACHE_FORWARD (scache, from - 1);
|
|
428
|
1006 }
|
|
|
1007 return from;
|
|
|
1008 }
|
|
|
1009
|
|
665
|
1010 static Charbpos
|
|
826
|
1011 find_end_of_comment (struct buffer *buf, Charbpos from, Charbpos stop,
|
|
|
1012 int comstyle)
|
|
428
|
1013 {
|
|
|
1014 int c;
|
|
460
|
1015 int prev_code;
|
|
|
1016 /* mask to match comment styles against; for ST_COMMENT_STYLE, this
|
|
|
1017 will get set to SYNTAX_COMMENT_STYLE_B, but never get checked */
|
|
|
1018 int mask = comstyle ? SYNTAX_COMMENT_STYLE_B : SYNTAX_COMMENT_STYLE_A;
|
|
826
|
1019 struct syntax_cache *scache = buf->syntax_cache;
|
|
428
|
1020
|
|
460
|
1021 /* This is only called by functions which have already set up the
|
|
|
1022 syntax_cache and are keeping it up-to-date */
|
|
428
|
1023 while (1)
|
|
|
1024 {
|
|
|
1025 if (from == stop)
|
|
|
1026 {
|
|
|
1027 return -1;
|
|
|
1028 }
|
|
460
|
1029
|
|
826
|
1030 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1031 c = BUF_FETCH_CHAR (buf, from);
|
|
460
|
1032
|
|
|
1033 /* Test for generic comments */
|
|
|
1034 if (comstyle == ST_COMMENT_STYLE)
|
|
|
1035 {
|
|
826
|
1036 if (SYNTAX_FROM_CACHE (scache, c) == Scomment_fence)
|
|
460
|
1037 {
|
|
|
1038 from++;
|
|
826
|
1039 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1040 break;
|
|
|
1041 }
|
|
|
1042 from++;
|
|
|
1043 continue; /* No need to test other comment styles in a
|
|
|
1044 generic comment */
|
|
|
1045 }
|
|
|
1046 else
|
|
|
1047
|
|
826
|
1048 if (SYNTAX_FROM_CACHE (scache, c) == Sendcomment
|
|
460
|
1049 && SYNTAX_CODE_MATCHES_1CHAR_P
|
|
826
|
1050 (SYNTAX_CODE_FROM_CACHE (scache, c), mask))
|
|
428
|
1051 /* we have encountered a comment end of the same style
|
|
|
1052 as the comment sequence which began this comment
|
|
|
1053 section */
|
|
460
|
1054 {
|
|
|
1055 from++;
|
|
826
|
1056 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1057 break;
|
|
|
1058 }
|
|
428
|
1059
|
|
826
|
1060 prev_code = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
428
|
1061 from++;
|
|
826
|
1062 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1063 if (from < stop
|
|
460
|
1064 && SYNTAX_CODES_MATCH_END_P
|
|
|
1065 (prev_code,
|
|
826
|
1066 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from)),
|
|
460
|
1067 mask)
|
|
|
1068
|
|
|
1069 )
|
|
428
|
1070 /* we have encountered a comment end of the same style
|
|
|
1071 as the comment sequence which began this comment
|
|
|
1072 section */
|
|
460
|
1073 {
|
|
|
1074 from++;
|
|
826
|
1075 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1076 break;
|
|
|
1077 }
|
|
428
|
1078 }
|
|
|
1079 return from;
|
|
|
1080 }
|
|
|
1081
|
|
|
1082
|
|
|
1083 /* #### between FSF 19.23 and 19.28 there are some changes to the logic
|
|
|
1084 in this function (and minor changes to find_start_of_comment(),
|
|
|
1085 above, which is part of Fforward_comment() in FSF). Attempts to port
|
|
|
1086 that logic made this function break, so I'm leaving it out. If anyone
|
|
|
1087 ever complains about this function not working properly, take a look
|
|
|
1088 at those changes. --ben */
|
|
|
1089
|
|
446
|
1090 DEFUN ("forward-comment", Fforward_comment, 0, 2, 0, /*
|
|
444
|
1091 Move forward across up to COUNT comments, or backwards if COUNT is negative.
|
|
428
|
1092 Stop scanning if we find something other than a comment or whitespace.
|
|
|
1093 Set point to where scanning stops.
|
|
444
|
1094 If COUNT comments are found as expected, with nothing except whitespace
|
|
428
|
1095 between them, return t; otherwise return nil.
|
|
|
1096 Point is set in either case.
|
|
446
|
1097 COUNT defaults to 1, and BUFFER defaults to the current buffer.
|
|
428
|
1098 */
|
|
444
|
1099 (count, buffer))
|
|
428
|
1100 {
|
|
665
|
1101 Charbpos from;
|
|
|
1102 Charbpos stop;
|
|
867
|
1103 Ichar c;
|
|
428
|
1104 enum syntaxcode code;
|
|
460
|
1105 int syncode;
|
|
444
|
1106 EMACS_INT n;
|
|
428
|
1107 struct buffer *buf = decode_buffer (buffer, 0);
|
|
826
|
1108 struct syntax_cache *scache;
|
|
|
1109
|
|
446
|
1110 if (NILP (count))
|
|
|
1111 n = 1;
|
|
|
1112 else
|
|
|
1113 {
|
|
|
1114 CHECK_INT (count);
|
|
|
1115 n = XINT (count);
|
|
|
1116 }
|
|
428
|
1117
|
|
|
1118 from = BUF_PT (buf);
|
|
|
1119
|
|
826
|
1120 scache = setup_buffer_syntax_cache (buf, from, n);
|
|
444
|
1121 while (n > 0)
|
|
428
|
1122 {
|
|
|
1123 QUIT;
|
|
|
1124
|
|
|
1125 stop = BUF_ZV (buf);
|
|
|
1126 while (from < stop)
|
|
|
1127 {
|
|
460
|
1128 int comstyle = 0; /* mask for finding matching comment style */
|
|
428
|
1129
|
|
|
1130 if (char_quoted (buf, from))
|
|
|
1131 {
|
|
|
1132 from++;
|
|
|
1133 continue;
|
|
|
1134 }
|
|
|
1135
|
|
826
|
1136 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1137 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
1138 syncode = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
|
1139 code = SYNTAX_FROM_CODE (syncode);
|
|
428
|
1140
|
|
|
1141 if (code == Scomment)
|
|
|
1142 {
|
|
|
1143 /* we have encountered a single character comment start
|
|
|
1144 sequence, and we are ignoring all text inside comments.
|
|
|
1145 we must record the comment style this character begins
|
|
|
1146 so that later, only a comment end of the same style actually
|
|
|
1147 ends the comment section */
|
|
460
|
1148 comstyle = SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode)
|
|
|
1149 == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
428
|
1150 }
|
|
|
1151
|
|
460
|
1152 else if (code == Scomment_fence)
|
|
|
1153 {
|
|
|
1154 from++;
|
|
|
1155 code = Scomment;
|
|
|
1156 comstyle = ST_COMMENT_STYLE;
|
|
|
1157 }
|
|
|
1158
|
|
428
|
1159 else if (from < stop
|
|
460
|
1160 && SYNTAX_CODE_START_FIRST_P (syncode))
|
|
428
|
1161 {
|
|
460
|
1162 int next_syncode;
|
|
826
|
1163 UPDATE_SYNTAX_CACHE_FORWARD (scache, from + 1);
|
|
460
|
1164 next_syncode =
|
|
826
|
1165 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from + 1));
|
|
460
|
1166
|
|
|
1167 if (SYNTAX_CODES_START_P (syncode, next_syncode))
|
|
|
1168 {
|
|
|
1169 /* we have encountered a 2char comment start sequence and we
|
|
|
1170 are ignoring all text inside comments. we must record
|
|
|
1171 the comment style this sequence begins so that later,
|
|
|
1172 only a comment end of the same style actually ends
|
|
|
1173 the comment section */
|
|
|
1174 code = Scomment;
|
|
|
1175 comstyle =
|
|
|
1176 SYNTAX_CODES_COMMENT_MASK_START (syncode, next_syncode)
|
|
|
1177 == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
|
1178 from++;
|
|
|
1179 }
|
|
428
|
1180 }
|
|
|
1181
|
|
|
1182 if (code == Scomment)
|
|
|
1183 {
|
|
826
|
1184 Charbpos newfrom = find_end_of_comment (buf, from, stop,
|
|
|
1185 comstyle);
|
|
428
|
1186 if (newfrom < 0)
|
|
|
1187 {
|
|
|
1188 /* we stopped because from==stop */
|
|
|
1189 BUF_SET_PT (buf, stop);
|
|
|
1190 return Qnil;
|
|
|
1191 }
|
|
|
1192 from = newfrom;
|
|
|
1193
|
|
|
1194 /* We have skipped one comment. */
|
|
|
1195 break;
|
|
|
1196 }
|
|
|
1197 else if (code != Swhitespace
|
|
|
1198 && code != Sendcomment
|
|
|
1199 && code != Scomment )
|
|
|
1200 {
|
|
|
1201 BUF_SET_PT (buf, from);
|
|
|
1202 return Qnil;
|
|
|
1203 }
|
|
|
1204 from++;
|
|
|
1205 }
|
|
|
1206
|
|
|
1207 /* End of comment reached */
|
|
444
|
1208 n--;
|
|
428
|
1209 }
|
|
|
1210
|
|
444
|
1211 while (n < 0)
|
|
428
|
1212 {
|
|
|
1213 QUIT;
|
|
|
1214
|
|
|
1215 stop = BUF_BEGV (buf);
|
|
|
1216 while (from > stop)
|
|
|
1217 {
|
|
460
|
1218 int comstyle = 0; /* mask for finding matching comment style */
|
|
428
|
1219
|
|
|
1220 from--;
|
|
|
1221 if (char_quoted (buf, from))
|
|
|
1222 {
|
|
|
1223 from--;
|
|
|
1224 continue;
|
|
|
1225 }
|
|
|
1226
|
|
|
1227 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
1228 syncode = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
|
1229 code = SYNTAX_FROM_CODE (syncode);
|
|
428
|
1230
|
|
|
1231 if (code == Sendcomment)
|
|
|
1232 {
|
|
|
1233 /* we have found a single char end comment. we must record
|
|
|
1234 the comment style encountered so that later, we can match
|
|
|
1235 only the proper comment begin sequence of the same style */
|
|
460
|
1236 comstyle = SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode)
|
|
|
1237 == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
|
1238 }
|
|
|
1239
|
|
|
1240 else if (code == Scomment_fence)
|
|
|
1241 {
|
|
|
1242 code = Sendcomment;
|
|
|
1243 comstyle = ST_COMMENT_STYLE;
|
|
428
|
1244 }
|
|
|
1245
|
|
|
1246 else if (from > stop
|
|
460
|
1247 && SYNTAX_CODE_END_SECOND_P (syncode))
|
|
428
|
1248 {
|
|
460
|
1249 int prev_syncode;
|
|
826
|
1250 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
460
|
1251 prev_syncode =
|
|
826
|
1252 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from - 1));
|
|
460
|
1253 if (SYNTAX_CODES_END_P (prev_syncode, syncode))
|
|
|
1254 {
|
|
|
1255 /* We must record the comment style encountered so that
|
|
|
1256 later, we can match only the proper comment begin
|
|
|
1257 sequence of the same style. */
|
|
|
1258 code = Sendcomment;
|
|
|
1259 comstyle = SYNTAX_CODES_COMMENT_MASK_END
|
|
|
1260 (prev_syncode, syncode) == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
|
1261 from--;
|
|
|
1262 }
|
|
428
|
1263 }
|
|
|
1264
|
|
|
1265 if (code == Sendcomment)
|
|
|
1266 {
|
|
460
|
1267 from = find_start_of_comment (buf, from, stop, comstyle);
|
|
428
|
1268 break;
|
|
|
1269 }
|
|
|
1270
|
|
|
1271 else if (code != Swhitespace
|
|
460
|
1272 && code != Scomment
|
|
|
1273 && code != Sendcomment)
|
|
428
|
1274 {
|
|
|
1275 BUF_SET_PT (buf, from + 1);
|
|
|
1276 return Qnil;
|
|
|
1277 }
|
|
|
1278 }
|
|
|
1279
|
|
444
|
1280 n++;
|
|
428
|
1281 }
|
|
|
1282
|
|
|
1283 BUF_SET_PT (buf, from);
|
|
|
1284 return Qt;
|
|
|
1285 }
|
|
|
1286
|
|
|
1287
|
|
|
1288 Lisp_Object
|
|
665
|
1289 scan_lists (struct buffer *buf, Charbpos from, int count, int depth,
|
|
444
|
1290 int sexpflag, int noerror)
|
|
428
|
1291 {
|
|
665
|
1292 Charbpos stop;
|
|
867
|
1293 Ichar c;
|
|
428
|
1294 int quoted;
|
|
|
1295 int mathexit = 0;
|
|
|
1296 enum syntaxcode code;
|
|
460
|
1297 int syncode;
|
|
428
|
1298 int min_depth = depth; /* Err out if depth gets less than this. */
|
|
826
|
1299 struct syntax_cache *scache;
|
|
|
1300
|
|
428
|
1301 if (depth > 0) min_depth = 0;
|
|
|
1302
|
|
826
|
1303 scache = setup_buffer_syntax_cache (buf, from, count);
|
|
428
|
1304 while (count > 0)
|
|
|
1305 {
|
|
|
1306 QUIT;
|
|
|
1307
|
|
|
1308 stop = BUF_ZV (buf);
|
|
|
1309 while (from < stop)
|
|
|
1310 {
|
|
460
|
1311 int comstyle = 0; /* mask for finding matching comment style */
|
|
428
|
1312
|
|
826
|
1313 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1314 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
1315 syncode = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
|
1316 code = SYNTAX_FROM_CODE (syncode);
|
|
428
|
1317 from++;
|
|
|
1318
|
|
|
1319 /* a 1-char comment start sequence */
|
|
|
1320 if (code == Scomment && parse_sexp_ignore_comments)
|
|
|
1321 {
|
|
460
|
1322 comstyle = SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode) ==
|
|
|
1323 SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
428
|
1324 }
|
|
|
1325
|
|
|
1326 /* else, a 2-char comment start sequence? */
|
|
|
1327 else if (from < stop
|
|
460
|
1328 && SYNTAX_CODE_START_FIRST_P (syncode)
|
|
428
|
1329 && parse_sexp_ignore_comments)
|
|
|
1330 {
|
|
460
|
1331 int next_syncode;
|
|
826
|
1332 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1333 next_syncode =
|
|
826
|
1334 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from));
|
|
460
|
1335
|
|
|
1336 if (SYNTAX_CODES_START_P (syncode, next_syncode))
|
|
|
1337 {
|
|
826
|
1338 /* we have encountered a comment start sequence and we
|
|
|
1339 are ignoring all text inside comments. we must record
|
|
|
1340 the comment style this sequence begins so that later,
|
|
|
1341 only a comment end of the same style actually ends
|
|
|
1342 the comment section */
|
|
|
1343 code = Scomment;
|
|
460
|
1344 comstyle = SYNTAX_CODES_COMMENT_MASK_START
|
|
|
1345 (syncode, next_syncode) == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
826
|
1346 from++;
|
|
|
1347 }
|
|
428
|
1348 }
|
|
826
|
1349 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1350
|
|
460
|
1351 if (SYNTAX_CODE_PREFIX (syncode))
|
|
428
|
1352 continue;
|
|
|
1353
|
|
|
1354 switch (code)
|
|
|
1355 {
|
|
|
1356 case Sescape:
|
|
|
1357 case Scharquote:
|
|
|
1358 if (from == stop) goto lose;
|
|
|
1359 from++;
|
|
|
1360 /* treat following character as a word constituent */
|
|
|
1361 case Sword:
|
|
|
1362 case Ssymbol:
|
|
|
1363 if (depth || !sexpflag) break;
|
|
|
1364 /* This word counts as a sexp; return at end of it. */
|
|
|
1365 while (from < stop)
|
|
|
1366 {
|
|
826
|
1367 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
|
1368 switch (SYNTAX_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from)))
|
|
428
|
1369 {
|
|
|
1370 case Scharquote:
|
|
|
1371 case Sescape:
|
|
|
1372 from++;
|
|
|
1373 if (from == stop) goto lose;
|
|
|
1374 break;
|
|
|
1375 case Sword:
|
|
|
1376 case Ssymbol:
|
|
|
1377 case Squote:
|
|
|
1378 break;
|
|
|
1379 default:
|
|
|
1380 goto done;
|
|
|
1381 }
|
|
|
1382 from++;
|
|
|
1383 }
|
|
|
1384 goto done;
|
|
|
1385
|
|
460
|
1386 case Scomment_fence:
|
|
|
1387 comstyle = ST_COMMENT_STYLE;
|
|
428
|
1388 case Scomment:
|
|
|
1389 if (!parse_sexp_ignore_comments)
|
|
|
1390 break;
|
|
826
|
1391 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1392 {
|
|
665
|
1393 Charbpos newfrom =
|
|
460
|
1394 find_end_of_comment (buf, from, stop, comstyle);
|
|
428
|
1395 if (newfrom < 0)
|
|
|
1396 {
|
|
|
1397 /* we stopped because from == stop in search forward */
|
|
|
1398 from = stop;
|
|
|
1399 if (depth == 0)
|
|
|
1400 goto done;
|
|
|
1401 goto lose;
|
|
|
1402 }
|
|
|
1403 from = newfrom;
|
|
|
1404 }
|
|
|
1405 break;
|
|
|
1406
|
|
|
1407 case Smath:
|
|
|
1408 if (!sexpflag)
|
|
|
1409 break;
|
|
|
1410 if (from != stop && c == BUF_FETCH_CHAR (buf, from))
|
|
|
1411 from++;
|
|
|
1412 if (mathexit)
|
|
|
1413 {
|
|
|
1414 mathexit = 0;
|
|
|
1415 goto close1;
|
|
|
1416 }
|
|
|
1417 mathexit = 1;
|
|
|
1418
|
|
|
1419 case Sopen:
|
|
|
1420 if (!++depth) goto done;
|
|
|
1421 break;
|
|
|
1422
|
|
|
1423 case Sclose:
|
|
|
1424 close1:
|
|
|
1425 if (!--depth) goto done;
|
|
|
1426 if (depth < min_depth)
|
|
|
1427 {
|
|
444
|
1428 if (noerror)
|
|
428
|
1429 return Qnil;
|
|
826
|
1430 syntax_error ("Containing expression ends prematurely",
|
|
|
1431 Qunbound);
|
|
428
|
1432 }
|
|
|
1433 break;
|
|
|
1434
|
|
460
|
1435 case Sstring_fence:
|
|
428
|
1436 case Sstring:
|
|
|
1437 {
|
|
867
|
1438 Ichar stringterm;
|
|
460
|
1439
|
|
|
1440 if (code != Sstring_fence)
|
|
|
1441 {
|
|
826
|
1442 /* XEmacs change: call syntax_match on character */
|
|
867
|
1443 Ichar ch = BUF_FETCH_CHAR (buf, from - 1);
|
|
460
|
1444 Lisp_Object stermobj =
|
|
1296
|
1445 syntax_match (scache->syntax_table, ch);
|
|
428
|
1446
|
|
|
1447 if (CHARP (stermobj))
|
|
|
1448 stringterm = XCHAR (stermobj);
|
|
|
1449 else
|
|
|
1450 stringterm = ch;
|
|
460
|
1451 }
|
|
|
1452 else
|
|
|
1453 stringterm = '\0'; /* avoid compiler warnings */
|
|
428
|
1454
|
|
|
1455 while (1)
|
|
|
1456 {
|
|
|
1457 if (from >= stop)
|
|
|
1458 goto lose;
|
|
826
|
1459 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1460 c = BUF_FETCH_CHAR (buf, from);
|
|
|
1461 if (code == Sstring
|
|
|
1462 ? c == stringterm
|
|
826
|
1463 : SYNTAX_FROM_CACHE (scache, c) == Sstring_fence)
|
|
428
|
1464 break;
|
|
460
|
1465
|
|
826
|
1466 switch (SYNTAX_FROM_CACHE (scache, c))
|
|
428
|
1467 {
|
|
|
1468 case Scharquote:
|
|
|
1469 case Sescape:
|
|
|
1470 from++;
|
|
|
1471 break;
|
|
|
1472 default:
|
|
|
1473 break;
|
|
|
1474 }
|
|
|
1475 from++;
|
|
|
1476 }
|
|
|
1477 from++;
|
|
|
1478 if (!depth && sexpflag) goto done;
|
|
|
1479 break;
|
|
|
1480 }
|
|
|
1481
|
|
|
1482 default:
|
|
|
1483 break;
|
|
|
1484 }
|
|
|
1485 }
|
|
|
1486
|
|
|
1487 /* Reached end of buffer. Error if within object,
|
|
|
1488 return nil if between */
|
|
|
1489 if (depth) goto lose;
|
|
|
1490
|
|
|
1491 return Qnil;
|
|
|
1492
|
|
|
1493 /* End of object reached */
|
|
|
1494 done:
|
|
|
1495 count--;
|
|
|
1496 }
|
|
|
1497
|
|
|
1498 while (count < 0)
|
|
|
1499 {
|
|
|
1500 QUIT;
|
|
|
1501
|
|
|
1502 stop = BUF_BEGV (buf);
|
|
|
1503 while (from > stop)
|
|
|
1504 {
|
|
460
|
1505 int comstyle = 0; /* mask for finding matching comment style */
|
|
428
|
1506
|
|
|
1507 from--;
|
|
826
|
1508 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from);
|
|
428
|
1509 quoted = char_quoted (buf, from);
|
|
|
1510 if (quoted)
|
|
460
|
1511 {
|
|
428
|
1512 from--;
|
|
826
|
1513 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from);
|
|
460
|
1514 }
|
|
428
|
1515
|
|
|
1516 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
1517 syncode = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
|
1518 code = SYNTAX_FROM_CODE (syncode);
|
|
428
|
1519
|
|
|
1520 if (code == Sendcomment && parse_sexp_ignore_comments)
|
|
|
1521 {
|
|
|
1522 /* we have found a single char end comment. we must record
|
|
|
1523 the comment style encountered so that later, we can match
|
|
|
1524 only the proper comment begin sequence of the same style */
|
|
460
|
1525 comstyle = SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode)
|
|
|
1526 == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
428
|
1527 }
|
|
|
1528
|
|
|
1529 else if (from > stop
|
|
460
|
1530 && SYNTAX_CODE_END_SECOND_P (syncode)
|
|
428
|
1531 && !char_quoted (buf, from - 1)
|
|
|
1532 && parse_sexp_ignore_comments)
|
|
|
1533 {
|
|
460
|
1534 int prev_syncode;
|
|
826
|
1535 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
|
1536 prev_syncode =
|
|
|
1537 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from - 1));
|
|
460
|
1538
|
|
|
1539 if (SYNTAX_CODES_END_P (prev_syncode, syncode))
|
|
|
1540 {
|
|
428
|
1541 /* we must record the comment style encountered so that
|
|
|
1542 later, we can match only the proper comment begin
|
|
|
1543 sequence of the same style */
|
|
|
1544 code = Sendcomment;
|
|
460
|
1545 comstyle = SYNTAX_CODES_COMMENT_MASK_END
|
|
|
1546 (prev_syncode, syncode) == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
428
|
1547 from--;
|
|
|
1548 }
|
|
460
|
1549 }
|
|
428
|
1550
|
|
460
|
1551 if (SYNTAX_CODE_PREFIX (syncode))
|
|
428
|
1552 continue;
|
|
|
1553
|
|
434
|
1554 switch (quoted ? Sword : code)
|
|
428
|
1555 {
|
|
|
1556 case Sword:
|
|
|
1557 case Ssymbol:
|
|
|
1558 if (depth || !sexpflag) break;
|
|
|
1559 /* This word counts as a sexp; count object finished after
|
|
|
1560 passing it. */
|
|
|
1561 while (from > stop)
|
|
|
1562 {
|
|
826
|
1563 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from);
|
|
428
|
1564 quoted = char_quoted (buf, from - 1);
|
|
|
1565
|
|
|
1566 if (quoted)
|
|
|
1567 from--;
|
|
|
1568 if (! (quoted
|
|
|
1569 || (syncode =
|
|
826
|
1570 SYNTAX_FROM_CACHE (scache, BUF_FETCH_CHAR (buf,
|
|
|
1571 from - 1)))
|
|
428
|
1572 == Sword
|
|
|
1573 || syncode == Ssymbol
|
|
|
1574 || syncode == Squote))
|
|
|
1575 goto done2;
|
|
|
1576 from--;
|
|
|
1577 }
|
|
|
1578 goto done2;
|
|
|
1579
|
|
|
1580 case Smath:
|
|
|
1581 if (!sexpflag)
|
|
|
1582 break;
|
|
|
1583 if (from != stop && c == BUF_FETCH_CHAR (buf, from - 1))
|
|
|
1584 from--;
|
|
|
1585 if (mathexit)
|
|
|
1586 {
|
|
|
1587 mathexit = 0;
|
|
|
1588 goto open2;
|
|
|
1589 }
|
|
|
1590 mathexit = 1;
|
|
|
1591
|
|
|
1592 case Sclose:
|
|
|
1593 if (!++depth) goto done2;
|
|
|
1594 break;
|
|
|
1595
|
|
|
1596 case Sopen:
|
|
|
1597 open2:
|
|
|
1598 if (!--depth) goto done2;
|
|
|
1599 if (depth < min_depth)
|
|
|
1600 {
|
|
444
|
1601 if (noerror)
|
|
428
|
1602 return Qnil;
|
|
826
|
1603 syntax_error ("Containing expression ends prematurely",
|
|
|
1604 Qunbound);
|
|
428
|
1605 }
|
|
|
1606 break;
|
|
|
1607
|
|
460
|
1608 case Scomment_fence:
|
|
|
1609 comstyle = ST_COMMENT_STYLE;
|
|
428
|
1610 case Sendcomment:
|
|
|
1611 if (parse_sexp_ignore_comments)
|
|
460
|
1612 from = find_start_of_comment (buf, from, stop, comstyle);
|
|
428
|
1613 break;
|
|
|
1614
|
|
460
|
1615 case Sstring_fence:
|
|
428
|
1616 case Sstring:
|
|
|
1617 {
|
|
867
|
1618 Ichar stringterm;
|
|
460
|
1619
|
|
|
1620 if (code != Sstring_fence)
|
|
|
1621 {
|
|
428
|
1622 /* XEmacs change: call syntax_match() on character */
|
|
867
|
1623 Ichar ch = BUF_FETCH_CHAR (buf, from);
|
|
460
|
1624 Lisp_Object stermobj =
|
|
1296
|
1625 syntax_match (scache->syntax_table, ch);
|
|
428
|
1626
|
|
|
1627 if (CHARP (stermobj))
|
|
|
1628 stringterm = XCHAR (stermobj);
|
|
|
1629 else
|
|
|
1630 stringterm = ch;
|
|
460
|
1631 }
|
|
|
1632 else
|
|
|
1633 stringterm = '\0'; /* avoid compiler warnings */
|
|
428
|
1634
|
|
|
1635 while (1)
|
|
|
1636 {
|
|
|
1637 if (from == stop) goto lose;
|
|
460
|
1638
|
|
826
|
1639 UPDATE_SYNTAX_CACHE_BACKWARD (scache, from - 1);
|
|
460
|
1640 c = BUF_FETCH_CHAR (buf, from - 1);
|
|
|
1641
|
|
|
1642 if ((code == Sstring
|
|
|
1643 ? c == stringterm
|
|
826
|
1644 : SYNTAX_FROM_CACHE (scache, c) == Sstring_fence)
|
|
460
|
1645 && !char_quoted (buf, from - 1))
|
|
|
1646 {
|
|
428
|
1647 break;
|
|
460
|
1648 }
|
|
|
1649
|
|
428
|
1650 from--;
|
|
|
1651 }
|
|
|
1652 from--;
|
|
|
1653 if (!depth && sexpflag) goto done2;
|
|
|
1654 break;
|
|
|
1655 }
|
|
|
1656 }
|
|
|
1657 }
|
|
|
1658
|
|
|
1659 /* Reached start of buffer. Error if within object,
|
|
|
1660 return nil if between */
|
|
|
1661 if (depth) goto lose;
|
|
|
1662
|
|
|
1663 return Qnil;
|
|
|
1664
|
|
|
1665 done2:
|
|
|
1666 count++;
|
|
|
1667 }
|
|
|
1668
|
|
|
1669
|
|
|
1670 return (make_int (from));
|
|
|
1671
|
|
|
1672 lose:
|
|
444
|
1673 if (!noerror)
|
|
826
|
1674 syntax_error ("Unbalanced parentheses", Qunbound);
|
|
428
|
1675 return Qnil;
|
|
|
1676 }
|
|
|
1677
|
|
|
1678 int
|
|
665
|
1679 char_quoted (struct buffer *buf, Charbpos pos)
|
|
428
|
1680 {
|
|
|
1681 enum syntaxcode code;
|
|
665
|
1682 Charbpos beg = BUF_BEGV (buf);
|
|
428
|
1683 int quoted = 0;
|
|
665
|
1684 Charbpos startpos = pos;
|
|
826
|
1685 struct syntax_cache *scache = buf->syntax_cache;
|
|
460
|
1686
|
|
|
1687 while (pos > beg)
|
|
|
1688 {
|
|
826
|
1689 UPDATE_SYNTAX_CACHE_BACKWARD (scache, pos - 1);
|
|
|
1690 code = SYNTAX_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, pos - 1));
|
|
428
|
1691
|
|
460
|
1692 if (code != Scharquote && code != Sescape)
|
|
|
1693 break;
|
|
|
1694 pos--;
|
|
|
1695 quoted = !quoted;
|
|
|
1696 }
|
|
|
1697
|
|
826
|
1698 UPDATE_SYNTAX_CACHE (scache, startpos);
|
|
428
|
1699 return quoted;
|
|
|
1700 }
|
|
|
1701
|
|
|
1702 DEFUN ("scan-lists", Fscan_lists, 3, 5, 0, /*
|
|
|
1703 Scan from character number FROM by COUNT lists.
|
|
|
1704 Returns the character number of the position thus found.
|
|
|
1705
|
|
|
1706 If DEPTH is nonzero, paren depth begins counting from that value,
|
|
|
1707 only places where the depth in parentheses becomes zero
|
|
|
1708 are candidates for stopping; COUNT such places are counted.
|
|
|
1709 Thus, a positive value for DEPTH means go out levels.
|
|
|
1710
|
|
|
1711 Comments are ignored if `parse-sexp-ignore-comments' is non-nil.
|
|
|
1712
|
|
|
1713 If the beginning or end of (the accessible part of) the buffer is reached
|
|
|
1714 and the depth is wrong, an error is signaled.
|
|
|
1715 If the depth is right but the count is not used up, nil is returned.
|
|
|
1716
|
|
|
1717 If optional arg BUFFER is non-nil, scanning occurs in that buffer instead
|
|
|
1718 of in the current buffer.
|
|
|
1719
|
|
|
1720 If optional arg NOERROR is non-nil, scan-lists will return nil instead of
|
|
|
1721 signalling an error.
|
|
|
1722 */
|
|
444
|
1723 (from, count, depth, buffer, noerror))
|
|
428
|
1724 {
|
|
|
1725 struct buffer *buf;
|
|
|
1726
|
|
|
1727 CHECK_INT (from);
|
|
|
1728 CHECK_INT (count);
|
|
|
1729 CHECK_INT (depth);
|
|
|
1730 buf = decode_buffer (buffer, 0);
|
|
|
1731
|
|
|
1732 return scan_lists (buf, XINT (from), XINT (count), XINT (depth), 0,
|
|
444
|
1733 !NILP (noerror));
|
|
428
|
1734 }
|
|
|
1735
|
|
|
1736 DEFUN ("scan-sexps", Fscan_sexps, 2, 4, 0, /*
|
|
|
1737 Scan from character number FROM by COUNT balanced expressions.
|
|
|
1738 If COUNT is negative, scan backwards.
|
|
|
1739 Returns the character number of the position thus found.
|
|
|
1740
|
|
|
1741 Comments are ignored if `parse-sexp-ignore-comments' is non-nil.
|
|
|
1742
|
|
|
1743 If the beginning or end of (the accessible part of) the buffer is reached
|
|
|
1744 in the middle of a parenthetical grouping, an error is signaled.
|
|
|
1745 If the beginning or end is reached between groupings
|
|
|
1746 but before count is used up, nil is returned.
|
|
|
1747
|
|
|
1748 If optional arg BUFFER is non-nil, scanning occurs in that buffer instead
|
|
|
1749 of in the current buffer.
|
|
|
1750
|
|
|
1751 If optional arg NOERROR is non-nil, scan-sexps will return nil instead of
|
|
|
1752 signalling an error.
|
|
|
1753 */
|
|
444
|
1754 (from, count, buffer, noerror))
|
|
428
|
1755 {
|
|
|
1756 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
1757 CHECK_INT (from);
|
|
|
1758 CHECK_INT (count);
|
|
|
1759
|
|
444
|
1760 return scan_lists (buf, XINT (from), XINT (count), 0, 1, !NILP (noerror));
|
|
428
|
1761 }
|
|
|
1762
|
|
|
1763 DEFUN ("backward-prefix-chars", Fbackward_prefix_chars, 0, 1, 0, /*
|
|
|
1764 Move point backward over any number of chars with prefix syntax.
|
|
|
1765 This includes chars with "quote" or "prefix" syntax (' or p).
|
|
|
1766
|
|
|
1767 Optional arg BUFFER defaults to the current buffer.
|
|
|
1768 */
|
|
|
1769 (buffer))
|
|
|
1770 {
|
|
|
1771 struct buffer *buf = decode_buffer (buffer, 0);
|
|
665
|
1772 Charbpos beg = BUF_BEGV (buf);
|
|
|
1773 Charbpos pos = BUF_PT (buf);
|
|
867
|
1774 Ichar c = '\0'; /* initialize to avoid compiler warnings */
|
|
826
|
1775 struct syntax_cache *scache;
|
|
|
1776
|
|
|
1777 scache = setup_buffer_syntax_cache (buf, pos, -1);
|
|
428
|
1778
|
|
|
1779 while (pos > beg && !char_quoted (buf, pos - 1)
|
|
460
|
1780 /* Previous statement updates syntax table. */
|
|
826
|
1781 && (SYNTAX_FROM_CACHE (scache, c = BUF_FETCH_CHAR (buf, pos - 1)) == Squote
|
|
|
1782 || SYNTAX_CODE_PREFIX (SYNTAX_CODE_FROM_CACHE (scache, c))))
|
|
428
|
1783 pos--;
|
|
|
1784
|
|
|
1785 BUF_SET_PT (buf, pos);
|
|
|
1786
|
|
|
1787 return Qnil;
|
|
|
1788 }
|
|
|
1789
|
|
|
1790 /* Parse forward from FROM to END,
|
|
|
1791 assuming that FROM has state OLDSTATE (nil means FROM is start of function),
|
|
|
1792 and return a description of the state of the parse at END.
|
|
|
1793 If STOPBEFORE is nonzero, stop at the start of an atom.
|
|
|
1794 If COMMENTSTOP is nonzero, stop at the start of a comment. */
|
|
|
1795
|
|
|
1796 static void
|
|
|
1797 scan_sexps_forward (struct buffer *buf, struct lisp_parse_state *stateptr,
|
|
665
|
1798 Charbpos from, Charbpos end,
|
|
428
|
1799 int targetdepth, int stopbefore,
|
|
|
1800 Lisp_Object oldstate,
|
|
|
1801 int commentstop)
|
|
|
1802 {
|
|
|
1803 struct lisp_parse_state state;
|
|
|
1804
|
|
|
1805 enum syntaxcode code;
|
|
|
1806 struct level { int last, prev; };
|
|
|
1807 struct level levelstart[100];
|
|
|
1808 struct level *curlevel = levelstart;
|
|
|
1809 struct level *endlevel = levelstart + 100;
|
|
|
1810 int depth; /* Paren depth of current scanning location.
|
|
|
1811 level - levelstart equals this except
|
|
|
1812 when the depth becomes negative. */
|
|
|
1813 int mindepth; /* Lowest DEPTH value seen. */
|
|
|
1814 int start_quoted = 0; /* Nonzero means starting after a char quote */
|
|
460
|
1815 int boundary_stop = commentstop == -1;
|
|
428
|
1816 Lisp_Object tem;
|
|
826
|
1817 struct syntax_cache *scache;
|
|
|
1818
|
|
|
1819 scache = setup_buffer_syntax_cache (buf, from, 1);
|
|
428
|
1820 if (NILP (oldstate))
|
|
|
1821 {
|
|
|
1822 depth = 0;
|
|
|
1823 state.instring = -1;
|
|
|
1824 state.incomment = 0;
|
|
|
1825 state.comstyle = 0; /* comment style a by default */
|
|
460
|
1826 state.comstr_start = -1; /* no comment/string seen. */
|
|
428
|
1827 }
|
|
|
1828 else
|
|
|
1829 {
|
|
|
1830 tem = Fcar (oldstate); /* elt 0, depth */
|
|
|
1831 if (!NILP (tem))
|
|
|
1832 depth = XINT (tem);
|
|
|
1833 else
|
|
|
1834 depth = 0;
|
|
|
1835
|
|
|
1836 oldstate = Fcdr (oldstate);
|
|
|
1837 oldstate = Fcdr (oldstate);
|
|
|
1838 oldstate = Fcdr (oldstate);
|
|
|
1839 tem = Fcar (oldstate); /* elt 3, instring */
|
|
460
|
1840 state.instring = ( !NILP (tem)
|
|
|
1841 ? ( INTP (tem) ? XINT (tem) : ST_STRING_STYLE)
|
|
|
1842 : -1);
|
|
428
|
1843
|
|
460
|
1844 oldstate = Fcdr (oldstate);
|
|
|
1845 tem = Fcar (oldstate); /* elt 4, incomment */
|
|
428
|
1846 state.incomment = !NILP (tem);
|
|
|
1847
|
|
|
1848 oldstate = Fcdr (oldstate);
|
|
|
1849 tem = Fcar (oldstate); /* elt 5, follows-quote */
|
|
|
1850 start_quoted = !NILP (tem);
|
|
|
1851
|
|
|
1852 /* if the eighth element of the list is nil, we are in comment style
|
|
460
|
1853 a; if it is t, we are in comment style b; if it is 'syntax-table,
|
|
|
1854 we are in a generic comment */
|
|
428
|
1855 oldstate = Fcdr (oldstate);
|
|
|
1856 oldstate = Fcdr (oldstate);
|
|
460
|
1857 tem = Fcar (oldstate); /* elt 7, comment style a/b/fence */
|
|
|
1858 state.comstyle = NILP (tem) ? 0 : ( EQ (tem, Qsyntax_table)
|
|
|
1859 ? ST_COMMENT_STYLE : 1 );
|
|
|
1860
|
|
|
1861 oldstate = Fcdr (oldstate); /* elt 8, start of last comment/string */
|
|
|
1862 tem = Fcar (oldstate);
|
|
|
1863 state.comstr_start = NILP (tem) ? -1 : XINT (tem);
|
|
|
1864
|
|
|
1865 /* elt 9, char numbers of starts-of-expression of levels
|
|
|
1866 (starting from outermost). */
|
|
|
1867 oldstate = Fcdr (oldstate);
|
|
|
1868 tem = Fcar (oldstate); /* elt 9, intermediate data for
|
|
|
1869 continuation of parsing (subject
|
|
|
1870 to change). */
|
|
|
1871 while (!NILP (tem)) /* >= second enclosing sexps. */
|
|
|
1872 {
|
|
|
1873 curlevel->last = XINT (Fcar (tem));
|
|
|
1874 if (++curlevel == endlevel)
|
|
826
|
1875 stack_overflow ("Nesting too deep for parser",
|
|
|
1876 make_int (curlevel - levelstart));
|
|
460
|
1877 curlevel->prev = -1;
|
|
|
1878 curlevel->last = -1;
|
|
|
1879 tem = Fcdr (tem);
|
|
|
1880 }
|
|
428
|
1881 }
|
|
|
1882 state.quoted = 0;
|
|
|
1883 mindepth = depth;
|
|
|
1884
|
|
|
1885 curlevel->prev = -1;
|
|
|
1886 curlevel->last = -1;
|
|
|
1887
|
|
|
1888 /* Enter the loop at a place appropriate for initial state. */
|
|
|
1889
|
|
|
1890 if (state.incomment) goto startincomment;
|
|
|
1891 if (state.instring >= 0)
|
|
|
1892 {
|
|
|
1893 if (start_quoted) goto startquotedinstring;
|
|
|
1894 goto startinstring;
|
|
|
1895 }
|
|
|
1896 if (start_quoted) goto startquoted;
|
|
|
1897
|
|
|
1898 while (from < end)
|
|
|
1899 {
|
|
867
|
1900 Ichar c;
|
|
460
|
1901 int syncode;
|
|
|
1902
|
|
428
|
1903 QUIT;
|
|
|
1904
|
|
826
|
1905 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1906 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
1907 syncode = SYNTAX_CODE_FROM_CACHE (scache, c);
|
|
|
1908 code = SYNTAX_FROM_CODE (syncode);
|
|
428
|
1909 from++;
|
|
|
1910
|
|
|
1911 /* record the comment style we have entered so that only the
|
|
|
1912 comment-ender sequence (or single char) of the same style
|
|
|
1913 actually terminates the comment section. */
|
|
460
|
1914 if (code == Scomment)
|
|
|
1915 {
|
|
|
1916 state.comstyle =
|
|
|
1917 SYNTAX_CODE_COMMENT_1CHAR_MASK (syncode)
|
|
|
1918 == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
|
1919 state.comstr_start = from - 1;
|
|
|
1920 }
|
|
|
1921
|
|
|
1922 /* a generic comment delimiter? */
|
|
|
1923 else if (code == Scomment_fence)
|
|
|
1924 {
|
|
|
1925 state.comstyle = ST_COMMENT_STYLE;
|
|
|
1926 state.comstr_start = from - 1;
|
|
|
1927 code = Scomment;
|
|
428
|
1928 }
|
|
|
1929
|
|
|
1930 else if (from < end &&
|
|
460
|
1931 SYNTAX_CODE_START_FIRST_P (syncode))
|
|
428
|
1932 {
|
|
460
|
1933 int next_syncode;
|
|
826
|
1934 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1935 next_syncode =
|
|
826
|
1936 SYNTAX_CODE_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from));
|
|
460
|
1937
|
|
|
1938 if (SYNTAX_CODES_START_P (syncode, next_syncode))
|
|
|
1939 {
|
|
428
|
1940 code = Scomment;
|
|
460
|
1941 state.comstyle = SYNTAX_CODES_COMMENT_MASK_START
|
|
|
1942 (syncode, next_syncode) == SYNTAX_COMMENT_STYLE_A ? 0 : 1;
|
|
|
1943 state.comstr_start = from - 1;
|
|
428
|
1944 from++;
|
|
826
|
1945 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
1946 }
|
|
428
|
1947 }
|
|
|
1948
|
|
460
|
1949 if (SYNTAX_CODE_PREFIX (syncode))
|
|
428
|
1950 continue;
|
|
|
1951 switch (code)
|
|
|
1952 {
|
|
|
1953 case Sescape:
|
|
|
1954 case Scharquote:
|
|
|
1955 if (stopbefore) goto stop; /* this arg means stop at sexp start */
|
|
|
1956 curlevel->last = from - 1;
|
|
|
1957 startquoted:
|
|
|
1958 if (from == end) goto endquoted;
|
|
|
1959 from++;
|
|
|
1960 goto symstarted;
|
|
|
1961 /* treat following character as a word constituent */
|
|
|
1962 case Sword:
|
|
|
1963 case Ssymbol:
|
|
|
1964 if (stopbefore) goto stop; /* this arg means stop at sexp start */
|
|
|
1965 curlevel->last = from - 1;
|
|
|
1966 symstarted:
|
|
|
1967 while (from < end)
|
|
|
1968 {
|
|
826
|
1969 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
|
1970 switch (SYNTAX_FROM_CACHE (scache, BUF_FETCH_CHAR (buf, from)))
|
|
428
|
1971 {
|
|
|
1972 case Scharquote:
|
|
|
1973 case Sescape:
|
|
|
1974 from++;
|
|
|
1975 if (from == end) goto endquoted;
|
|
|
1976 break;
|
|
|
1977 case Sword:
|
|
|
1978 case Ssymbol:
|
|
|
1979 case Squote:
|
|
|
1980 break;
|
|
|
1981 default:
|
|
|
1982 goto symdone;
|
|
|
1983 }
|
|
|
1984 from++;
|
|
|
1985 }
|
|
|
1986 symdone:
|
|
|
1987 curlevel->prev = curlevel->last;
|
|
|
1988 break;
|
|
|
1989
|
|
|
1990 case Scomment:
|
|
|
1991 state.incomment = 1;
|
|
460
|
1992 if (commentstop || boundary_stop) goto done;
|
|
428
|
1993 startincomment:
|
|
460
|
1994 if (commentstop == 1)
|
|
428
|
1995 goto done;
|
|
826
|
1996 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
428
|
1997 {
|
|
826
|
1998 Charbpos newfrom = find_end_of_comment (buf, from, end,
|
|
|
1999 state.comstyle);
|
|
428
|
2000 if (newfrom < 0)
|
|
|
2001 {
|
|
|
2002 /* we terminated search because from == end */
|
|
|
2003 from = end;
|
|
|
2004 goto done;
|
|
|
2005 }
|
|
|
2006 from = newfrom;
|
|
|
2007 }
|
|
|
2008 state.incomment = 0;
|
|
|
2009 state.comstyle = 0; /* reset the comment style */
|
|
460
|
2010 if (boundary_stop) goto done;
|
|
428
|
2011 break;
|
|
|
2012
|
|
|
2013 case Sopen:
|
|
|
2014 if (stopbefore) goto stop; /* this arg means stop at sexp start */
|
|
|
2015 depth++;
|
|
|
2016 /* curlevel++->last ran into compiler bug on Apollo */
|
|
|
2017 curlevel->last = from - 1;
|
|
|
2018 if (++curlevel == endlevel)
|
|
826
|
2019 stack_overflow ("Nesting too deep for parser",
|
|
|
2020 make_int (curlevel - levelstart));
|
|
428
|
2021 curlevel->prev = -1;
|
|
|
2022 curlevel->last = -1;
|
|
|
2023 if (targetdepth == depth) goto done;
|
|
|
2024 break;
|
|
|
2025
|
|
|
2026 case Sclose:
|
|
|
2027 depth--;
|
|
|
2028 if (depth < mindepth)
|
|
|
2029 mindepth = depth;
|
|
|
2030 if (curlevel != levelstart)
|
|
|
2031 curlevel--;
|
|
|
2032 curlevel->prev = curlevel->last;
|
|
|
2033 if (targetdepth == depth) goto done;
|
|
|
2034 break;
|
|
|
2035
|
|
|
2036 case Sstring:
|
|
460
|
2037 case Sstring_fence:
|
|
|
2038 state.comstr_start = from - 1;
|
|
428
|
2039 if (stopbefore) goto stop; /* this arg means stop at sexp start */
|
|
|
2040 curlevel->last = from - 1;
|
|
460
|
2041 if (code == Sstring_fence)
|
|
428
|
2042 {
|
|
460
|
2043 state.instring = ST_STRING_STYLE;
|
|
|
2044 }
|
|
|
2045 else
|
|
|
2046 {
|
|
|
2047 /* XEmacs change: call syntax_match() on character */
|
|
867
|
2048 Ichar ch = BUF_FETCH_CHAR (buf, from - 1);
|
|
460
|
2049 Lisp_Object stermobj =
|
|
1296
|
2050 syntax_match (scache->syntax_table, ch);
|
|
428
|
2051
|
|
|
2052 if (CHARP (stermobj))
|
|
|
2053 state.instring = XCHAR (stermobj);
|
|
|
2054 else
|
|
|
2055 state.instring = ch;
|
|
|
2056 }
|
|
460
|
2057 if (boundary_stop) goto done;
|
|
428
|
2058 startinstring:
|
|
|
2059 while (1)
|
|
|
2060 {
|
|
460
|
2061 enum syntaxcode temp_code;
|
|
|
2062
|
|
428
|
2063 if (from >= end) goto done;
|
|
460
|
2064
|
|
826
|
2065 UPDATE_SYNTAX_CACHE_FORWARD (scache, from);
|
|
460
|
2066 c = BUF_FETCH_CHAR (buf, from);
|
|
826
|
2067 temp_code = SYNTAX_FROM_CACHE (scache, c);
|
|
460
|
2068
|
|
|
2069 if (
|
|
|
2070 state.instring != ST_STRING_STYLE &&
|
|
|
2071 temp_code == Sstring &&
|
|
|
2072 c == state.instring) break;
|
|
|
2073
|
|
|
2074 switch (temp_code)
|
|
428
|
2075 {
|
|
460
|
2076 case Sstring_fence:
|
|
|
2077 if (state.instring == ST_STRING_STYLE)
|
|
|
2078 goto string_end;
|
|
|
2079 break;
|
|
428
|
2080 case Scharquote:
|
|
|
2081 case Sescape:
|
|
|
2082 {
|
|
|
2083 from++;
|
|
|
2084 startquotedinstring:
|
|
|
2085 if (from >= end) goto endquoted;
|
|
|
2086 break;
|
|
|
2087 }
|
|
|
2088 default:
|
|
|
2089 break;
|
|
|
2090 }
|
|
|
2091 from++;
|
|
|
2092 }
|
|
460
|
2093 string_end:
|
|
428
|
2094 state.instring = -1;
|
|
|
2095 curlevel->prev = curlevel->last;
|
|
|
2096 from++;
|
|
460
|
2097 if (boundary_stop) goto done;
|
|
428
|
2098 break;
|
|
|
2099
|
|
|
2100 case Smath:
|
|
|
2101 break;
|
|
|
2102
|
|
|
2103 case Swhitespace:
|
|
|
2104 case Spunct:
|
|
|
2105 case Squote:
|
|
|
2106 case Sendcomment:
|
|
460
|
2107 case Scomment_fence:
|
|
428
|
2108 case Sinherit:
|
|
|
2109 case Smax:
|
|
|
2110 break;
|
|
|
2111 }
|
|
|
2112 }
|
|
|
2113 goto done;
|
|
|
2114
|
|
|
2115 stop: /* Here if stopping before start of sexp. */
|
|
|
2116 from--; /* We have just fetched the char that starts it; */
|
|
|
2117 goto done; /* but return the position before it. */
|
|
|
2118
|
|
|
2119 endquoted:
|
|
|
2120 state.quoted = 1;
|
|
|
2121 done:
|
|
|
2122 state.depth = depth;
|
|
|
2123 state.mindepth = mindepth;
|
|
|
2124 state.thislevelstart = curlevel->prev;
|
|
|
2125 state.prevlevelstart
|
|
|
2126 = (curlevel == levelstart) ? -1 : (curlevel - 1)->last;
|
|
|
2127 state.location = from;
|
|
460
|
2128 state.levelstarts = Qnil;
|
|
|
2129 while (--curlevel >= levelstart)
|
|
|
2130 state.levelstarts = Fcons (make_int (curlevel->last),
|
|
|
2131 state.levelstarts);
|
|
428
|
2132
|
|
|
2133 *stateptr = state;
|
|
|
2134 }
|
|
|
2135
|
|
|
2136 DEFUN ("parse-partial-sexp", Fparse_partial_sexp, 2, 7, 0, /*
|
|
|
2137 Parse Lisp syntax starting at FROM until TO; return status of parse at TO.
|
|
|
2138 Parsing stops at TO or when certain criteria are met;
|
|
|
2139 point is set to where parsing stops.
|
|
444
|
2140 If fifth arg OLDSTATE is omitted or nil,
|
|
428
|
2141 parsing assumes that FROM is the beginning of a function.
|
|
460
|
2142 Value is a list of nine elements describing final state of parsing:
|
|
428
|
2143 0. depth in parens.
|
|
|
2144 1. character address of start of innermost containing list; nil if none.
|
|
|
2145 2. character address of start of last complete sexp terminated.
|
|
|
2146 3. non-nil if inside a string.
|
|
460
|
2147 (It is the character that will terminate the string,
|
|
|
2148 or t if the string should be terminated by an explicit
|
|
|
2149 `syntax-table' property.)
|
|
428
|
2150 4. t if inside a comment.
|
|
|
2151 5. t if following a quote character.
|
|
|
2152 6. the minimum paren-depth encountered during this scan.
|
|
460
|
2153 7. nil if in comment style a, or not in a comment; t if in comment style b;
|
|
|
2154 `syntax-table' if given by an explicit `syntax-table' property.
|
|
|
2155 8. character address of start of last comment or string; nil if none.
|
|
|
2156 9. Intermediate data for continuation of parsing (subject to change).
|
|
428
|
2157 If third arg TARGETDEPTH is non-nil, parsing stops if the depth
|
|
|
2158 in parentheses becomes equal to TARGETDEPTH.
|
|
|
2159 Fourth arg STOPBEFORE non-nil means stop when come to
|
|
|
2160 any character that starts a sexp.
|
|
460
|
2161 Fifth arg OLDSTATE is a nine-element list like what this function returns.
|
|
428
|
2162 It is used to initialize the state of the parse. Its second and third
|
|
|
2163 elements are ignored.
|
|
460
|
2164 Sixth arg COMMENTSTOP non-nil means stop at the start of a comment. If it
|
|
|
2165 is `syntax-table', stop after the start of a comment or a string, or after
|
|
|
2166 the end of a comment or string.
|
|
826
|
2167 Seventh arg BUFFER specifies the buffer to do the parsing in, and defaults
|
|
|
2168 to the current buffer.
|
|
428
|
2169 */
|
|
|
2170 (from, to, targetdepth, stopbefore, oldstate, commentstop, buffer))
|
|
|
2171 {
|
|
|
2172 struct lisp_parse_state state;
|
|
|
2173 int target;
|
|
665
|
2174 Charbpos start, end;
|
|
428
|
2175 struct buffer *buf = decode_buffer (buffer, 0);
|
|
|
2176 Lisp_Object val;
|
|
|
2177
|
|
|
2178 if (!NILP (targetdepth))
|
|
|
2179 {
|
|
|
2180 CHECK_INT (targetdepth);
|
|
|
2181 target = XINT (targetdepth);
|
|
|
2182 }
|
|
|
2183 else
|
|
|
2184 target = -100000; /* We won't reach this depth */
|
|
|
2185
|
|
|
2186 get_buffer_range_char (buf, from, to, &start, &end, 0);
|
|
|
2187 scan_sexps_forward (buf, &state, start, end,
|
|
|
2188 target, !NILP (stopbefore), oldstate,
|
|
460
|
2189 (NILP (commentstop)
|
|
|
2190 ? 0 : (EQ (commentstop, Qsyntax_table) ? -1 : 1)));
|
|
428
|
2191 BUF_SET_PT (buf, state.location);
|
|
|
2192
|
|
|
2193 /* reverse order */
|
|
|
2194 val = Qnil;
|
|
460
|
2195 val = Fcons (state.levelstarts, val);
|
|
|
2196 val = Fcons ((state.incomment || (state.instring >= 0))
|
|
|
2197 ? make_int (state.comstr_start) : Qnil, val);
|
|
|
2198 val = Fcons (state.comstyle ? (state.comstyle == ST_COMMENT_STYLE
|
|
|
2199 ? Qsyntax_table : Qt) : Qnil, val);
|
|
428
|
2200 val = Fcons (make_int (state.mindepth), val);
|
|
|
2201 val = Fcons (state.quoted ? Qt : Qnil, val);
|
|
|
2202 val = Fcons (state.incomment ? Qt : Qnil, val);
|
|
460
|
2203 val = Fcons (state.instring < 0
|
|
|
2204 ? Qnil
|
|
|
2205 : (state.instring == ST_STRING_STYLE
|
|
|
2206 ? Qt : make_int (state.instring)), val);
|
|
826
|
2207 val = Fcons (state.thislevelstart < 0 ? Qnil :
|
|
|
2208 make_int (state.thislevelstart), val);
|
|
|
2209 val = Fcons (state.prevlevelstart < 0 ? Qnil :
|
|
|
2210 make_int (state.prevlevelstart), val);
|
|
428
|
2211 val = Fcons (make_int (state.depth), val);
|
|
|
2212
|
|
|
2213 return val;
|
|
|
2214 }
|
|
|
2215
|
|
|
2216
|
|
|
2217 /* Updating of the mirror syntax table.
|
|
|
2218
|
|
1296
|
2219 Each syntax table has a corresponding mirror table in it. Whenever we
|
|
|
2220 make a change to a syntax table, we set a dirty flag. When accessing a
|
|
|
2221 value from the mirror table and the table is dirty, we call
|
|
|
2222 update_syntax_table() to clean it up.
|
|
428
|
2223
|
|
|
2224 #### We really only need to map over the changed range.
|
|
|
2225
|
|
|
2226 If we change the standard syntax table, we need to map over
|
|
|
2227 all tables because any of them could be inheriting from the
|
|
|
2228 standard syntax table.
|
|
|
2229
|
|
|
2230 When `set-syntax-table' is called, we set the buffer's mirror
|
|
|
2231 syntax table as well.
|
|
|
2232 */
|
|
|
2233
|
|
826
|
2234 static int
|
|
|
2235 copy_to_mirrortab (struct chartab_range *range, Lisp_Object table,
|
|
|
2236 Lisp_Object val, void *arg)
|
|
428
|
2237 {
|
|
826
|
2238 Lisp_Object mirrortab = VOID_TO_LISP (arg);
|
|
428
|
2239
|
|
|
2240 if (CONSP (val))
|
|
|
2241 val = XCAR (val);
|
|
826
|
2242 if (SYNTAX_FROM_CODE (XINT (val)) != Sinherit)
|
|
|
2243 put_char_table (mirrortab, range, val);
|
|
|
2244 return 0;
|
|
|
2245 }
|
|
|
2246
|
|
|
2247 static int
|
|
|
2248 copy_if_not_already_present (struct chartab_range *range, Lisp_Object table,
|
|
|
2249 Lisp_Object val, void *arg)
|
|
|
2250 {
|
|
1296
|
2251 Lisp_Object mirrortab = VOID_TO_LISP (arg);
|
|
826
|
2252 if (CONSP (val))
|
|
|
2253 val = XCAR (val);
|
|
|
2254 if (SYNTAX_FROM_CODE (XINT (val)) != Sinherit)
|
|
|
2255 {
|
|
|
2256 Lisp_Object existing =
|
|
1296
|
2257 updating_mirror_get_range_char_table (range, mirrortab,
|
|
|
2258 Vbogus_syntax_table_value);
|
|
826
|
2259 if (NILP (existing))
|
|
|
2260 /* nothing at all */
|
|
1296
|
2261 put_char_table (mirrortab, range, val);
|
|
|
2262 else if (!EQ (existing, Vbogus_syntax_table_value))
|
|
826
|
2263 /* full */
|
|
|
2264 ;
|
|
|
2265 else
|
|
|
2266 {
|
|
|
2267 Freset_char_table (Vtemp_table_for_use_updating_syntax_tables);
|
|
|
2268 copy_char_table_range
|
|
1296
|
2269 (mirrortab, Vtemp_table_for_use_updating_syntax_tables, range);
|
|
|
2270 put_char_table (mirrortab, range, val);
|
|
826
|
2271 copy_char_table_range
|
|
1296
|
2272 (Vtemp_table_for_use_updating_syntax_tables, mirrortab, range);
|
|
826
|
2273 }
|
|
428
|
2274 }
|
|
826
|
2275
|
|
428
|
2276 return 0;
|
|
|
2277 }
|
|
|
2278
|
|
|
2279 static void
|
|
826
|
2280 update_just_this_syntax_table (Lisp_Object table)
|
|
428
|
2281 {
|
|
|
2282 struct chartab_range range;
|
|
826
|
2283 Lisp_Object mirrortab = XCHAR_TABLE (table)->mirror_table;
|
|
|
2284
|
|
1296
|
2285 assert (!XCHAR_TABLE (table)->mirror_table_p);
|
|
826
|
2286 range.type = CHARTAB_RANGE_ALL;
|
|
|
2287 Freset_char_table (mirrortab);
|
|
1296
|
2288
|
|
826
|
2289 /* First, copy the tables values other than inherit into the mirror
|
|
|
2290 table. Then, for tables other than the standard syntax table, map
|
|
|
2291 over the standard table, copying values into the mirror table only if
|
|
|
2292 entries don't already exist in that table. (The copying step requires
|
|
|
2293 another mapping.)
|
|
|
2294 */
|
|
428
|
2295
|
|
826
|
2296 map_char_table (table, &range, copy_to_mirrortab, LISP_TO_VOID (mirrortab));
|
|
|
2297 /* second clause catches bootstrapping problems when initializing the
|
|
|
2298 standard syntax table */
|
|
|
2299 if (!EQ (table, Vstandard_syntax_table) && !NILP (Vstandard_syntax_table))
|
|
1296
|
2300 map_char_table (Vstandard_syntax_table, &range,
|
|
|
2301 copy_if_not_already_present, LISP_TO_VOID (mirrortab));
|
|
826
|
2302 /* The resetting made the default be Qnil. Put it back to Spunct. */
|
|
|
2303 set_char_table_default (mirrortab, make_int (Spunct));
|
|
1296
|
2304 XCHAR_TABLE (mirrortab)->dirty = 0;
|
|
428
|
2305 }
|
|
|
2306
|
|
|
2307 /* Called from chartab.c when a change is made to a syntax table.
|
|
|
2308 If this is the standard syntax table, we need to recompute
|
|
|
2309 *all* syntax tables (yuck). Otherwise we just recompute this
|
|
|
2310 one. */
|
|
|
2311
|
|
|
2312 void
|
|
826
|
2313 update_syntax_table (Lisp_Object table)
|
|
428
|
2314 {
|
|
1296
|
2315 Lisp_Object nonmirror = XCHAR_TABLE (table)->mirror_table;
|
|
|
2316 assert (XCHAR_TABLE (table)->mirror_table_p);
|
|
|
2317 if (EQ (nonmirror, Vstandard_syntax_table))
|
|
428
|
2318 {
|
|
|
2319 Lisp_Object syntab;
|
|
|
2320
|
|
|
2321 for (syntab = Vall_syntax_tables; !NILP (syntab);
|
|
|
2322 syntab = XCHAR_TABLE (syntab)->next_table)
|
|
826
|
2323 update_just_this_syntax_table (syntab);
|
|
428
|
2324 }
|
|
|
2325 else
|
|
1296
|
2326 update_just_this_syntax_table (nonmirror);
|
|
428
|
2327 }
|
|
|
2328
|
|
|
2329
|
|
|
2330 /************************************************************************/
|
|
|
2331 /* initialization */
|
|
|
2332 /************************************************************************/
|
|
|
2333
|
|
|
2334 void
|
|
|
2335 syms_of_syntax (void)
|
|
|
2336 {
|
|
563
|
2337 DEFSYMBOL (Qsyntax_table_p);
|
|
|
2338 DEFSYMBOL (Qsyntax_table);
|
|
428
|
2339
|
|
|
2340 DEFSUBR (Fsyntax_table_p);
|
|
|
2341 DEFSUBR (Fsyntax_table);
|
|
826
|
2342 #ifdef DEBUG_XEMACS
|
|
|
2343 DEFSUBR (Fmirror_syntax_table);
|
|
|
2344 DEFSUBR (Fsyntax_cache_info);
|
|
|
2345 #endif /* DEBUG_XEMACS */
|
|
428
|
2346 DEFSUBR (Fstandard_syntax_table);
|
|
|
2347 DEFSUBR (Fcopy_syntax_table);
|
|
|
2348 DEFSUBR (Fset_syntax_table);
|
|
|
2349 DEFSUBR (Fsyntax_designator_chars);
|
|
|
2350 DEFSUBR (Fchar_syntax);
|
|
|
2351 DEFSUBR (Fmatching_paren);
|
|
|
2352 /* DEFSUBR (Fmodify_syntax_entry); now in Lisp. */
|
|
|
2353 /* DEFSUBR (Fdescribe_syntax); now in Lisp. */
|
|
|
2354
|
|
|
2355 DEFSUBR (Fforward_word);
|
|
|
2356
|
|
|
2357 DEFSUBR (Fforward_comment);
|
|
|
2358 DEFSUBR (Fscan_lists);
|
|
|
2359 DEFSUBR (Fscan_sexps);
|
|
|
2360 DEFSUBR (Fbackward_prefix_chars);
|
|
|
2361 DEFSUBR (Fparse_partial_sexp);
|
|
|
2362 }
|
|
|
2363
|
|
|
2364 void
|
|
|
2365 vars_of_syntax (void)
|
|
|
2366 {
|
|
|
2367 DEFVAR_BOOL ("parse-sexp-ignore-comments", &parse_sexp_ignore_comments /*
|
|
|
2368 Non-nil means `forward-sexp', etc., should treat comments as whitespace.
|
|
|
2369 */ );
|
|
434
|
2370 parse_sexp_ignore_comments = 0;
|
|
428
|
2371
|
|
460
|
2372 DEFVAR_BOOL ("lookup-syntax-properties", &lookup_syntax_properties /*
|
|
826
|
2373 Non-nil means `forward-sexp', etc., respect the `syntax-table' property.
|
|
|
2374 This property can be placed on buffers or strings and can be used to explicitly
|
|
|
2375 specify the syntax table to be used for looking up the syntax of the chars
|
|
|
2376 having this property, or to directly specify the syntax of the chars.
|
|
|
2377
|
|
460
|
2378 The value of this property should be either a syntax table, or a cons
|
|
|
2379 of the form (SYNTAXCODE . MATCHCHAR), SYNTAXCODE being the numeric
|
|
|
2380 syntax code, MATCHCHAR being nil or the character to match (which is
|
|
826
|
2381 relevant only when the syntax code is open/close-type).
|
|
460
|
2382 */ );
|
|
|
2383 lookup_syntax_properties = 1;
|
|
|
2384
|
|
428
|
2385 DEFVAR_BOOL ("words-include-escapes", &words_include_escapes /*
|
|
|
2386 Non-nil means `forward-word', etc., should treat escape chars part of words.
|
|
|
2387 */ );
|
|
434
|
2388 words_include_escapes = 0;
|
|
428
|
2389
|
|
|
2390 no_quit_in_re_search = 0;
|
|
1296
|
2391
|
|
|
2392 Vbogus_syntax_table_value = make_float (0.0);
|
|
|
2393 staticpro (&Vbogus_syntax_table_value);
|
|
428
|
2394 }
|
|
|
2395
|
|
|
2396 static void
|
|
442
|
2397 define_standard_syntax (const char *p, enum syntaxcode syn)
|
|
428
|
2398 {
|
|
|
2399 for (; *p; p++)
|
|
|
2400 Fput_char_table (make_char (*p), make_int (syn), Vstandard_syntax_table);
|
|
|
2401 }
|
|
|
2402
|
|
|
2403 void
|
|
|
2404 complex_vars_of_syntax (void)
|
|
|
2405 {
|
|
867
|
2406 Ichar i;
|
|
442
|
2407 const char *p;
|
|
428
|
2408 /* Set this now, so first buffer creation can refer to it. */
|
|
|
2409 /* Make it nil before calling copy-syntax-table
|
|
|
2410 so that copy-syntax-table will know not to try to copy from garbage */
|
|
|
2411 Vstandard_syntax_table = Qnil;
|
|
|
2412 Vstandard_syntax_table = Fcopy_syntax_table (Qnil);
|
|
|
2413 staticpro (&Vstandard_syntax_table);
|
|
|
2414
|
|
826
|
2415 Vtemp_table_for_use_updating_syntax_tables = Fmake_char_table (Qgeneric);
|
|
|
2416 staticpro (&Vtemp_table_for_use_updating_syntax_tables);
|
|
|
2417
|
|
428
|
2418 Vsyntax_designator_chars_string = make_string_nocopy (syntax_code_spec,
|
|
|
2419 Smax);
|
|
|
2420 staticpro (&Vsyntax_designator_chars_string);
|
|
|
2421
|
|
826
|
2422 set_char_table_default (Vstandard_syntax_table, make_int (Spunct));
|
|
428
|
2423
|
|
|
2424 for (i = 0; i <= 32; i++) /* Control 0 plus SPACE */
|
|
|
2425 Fput_char_table (make_char (i), make_int (Swhitespace),
|
|
|
2426 Vstandard_syntax_table);
|
|
|
2427 for (i = 127; i <= 159; i++) /* DEL plus Control 1 */
|
|
|
2428 Fput_char_table (make_char (i), make_int (Swhitespace),
|
|
|
2429 Vstandard_syntax_table);
|
|
|
2430
|
|
|
2431 define_standard_syntax ("abcdefghijklmnopqrstuvwxyz"
|
|
|
2432 "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
|
|
|
2433 "0123456789"
|
|
|
2434 "$%", Sword);
|
|
|
2435 define_standard_syntax ("\"", Sstring);
|
|
|
2436 define_standard_syntax ("\\", Sescape);
|
|
|
2437 define_standard_syntax ("_-+*/&|<>=", Ssymbol);
|
|
|
2438 define_standard_syntax (".,;:?!#@~^'`", Spunct);
|
|
|
2439
|
|
|
2440 for (p = "()[]{}"; *p; p+=2)
|
|
|
2441 {
|
|
|
2442 Fput_char_table (make_char (p[0]),
|
|
|
2443 Fcons (make_int (Sopen), make_char (p[1])),
|
|
|
2444 Vstandard_syntax_table);
|
|
|
2445 Fput_char_table (make_char (p[1]),
|
|
|
2446 Fcons (make_int (Sclose), make_char (p[0])),
|
|
|
2447 Vstandard_syntax_table);
|
|
|
2448 }
|
|
|
2449 }
|
