Mercurial > hg > CbC > CbC_gcc
annotate libcpp/directives.c @ 120:f93fa5091070
fix conv1.c
| author | mir3636 |
|---|---|
| date | Thu, 08 Mar 2018 14:53:42 +0900 |
| parents | 04ced10e8804 |
| children | 84e7813d76e9 |
| rev | line source |
|---|---|
| 0 | 1 /* CPP Library. (Directive handling.) |
| 111 | 2 Copyright (C) 1986-2017 Free Software Foundation, Inc. |
| 0 | 3 Contributed by Per Bothner, 1994-95. |
| 4 Based on CCCP program by Paul Rubin, June 1986 | |
| 5 Adapted to ANSI C, Richard Stallman, Jan 1987 | |
| 6 | |
| 7 This program is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 3, or (at your option) any | |
| 10 later version. | |
| 11 | |
| 12 This program is distributed in the hope that it will be useful, | |
| 13 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 GNU General Public License for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with this program; see the file COPYING3. If not see | |
| 19 <http://www.gnu.org/licenses/>. */ | |
| 20 | |
| 21 #include "config.h" | |
| 22 #include "system.h" | |
| 23 #include "cpplib.h" | |
| 24 #include "internal.h" | |
| 25 #include "mkdeps.h" | |
| 26 #include "obstack.h" | |
| 27 | |
| 28 /* Stack of conditionals currently in progress | |
| 29 (including both successful and failing conditionals). */ | |
| 30 struct if_stack | |
| 31 { | |
| 32 struct if_stack *next; | |
| 111 | 33 source_location line; /* Line where condition started. */ |
| 0 | 34 const cpp_hashnode *mi_cmacro;/* macro name for #ifndef around entire file */ |
| 35 bool skip_elses; /* Can future #else / #elif be skipped? */ | |
| 36 bool was_skipping; /* If were skipping on entry. */ | |
| 37 int type; /* Most recent conditional for diagnostics. */ | |
| 38 }; | |
| 39 | |
| 40 /* Contains a registered pragma or pragma namespace. */ | |
| 41 typedef void (*pragma_cb) (cpp_reader *); | |
| 42 struct pragma_entry | |
| 43 { | |
| 44 struct pragma_entry *next; | |
| 45 const cpp_hashnode *pragma; /* Name and length. */ | |
| 46 bool is_nspace; | |
| 47 bool is_internal; | |
| 48 bool is_deferred; | |
| 49 bool allow_expansion; | |
| 50 union { | |
| 51 pragma_cb handler; | |
| 52 struct pragma_entry *space; | |
| 53 unsigned int ident; | |
| 54 } u; | |
| 55 }; | |
| 56 | |
| 57 /* Values for the origin field of struct directive. KANDR directives | |
| 58 come from traditional (K&R) C. STDC89 directives come from the | |
| 59 1989 C standard. EXTENSION directives are extensions. */ | |
| 60 #define KANDR 0 | |
| 61 #define STDC89 1 | |
| 62 #define EXTENSION 2 | |
| 63 | |
| 64 /* Values for the flags field of struct directive. COND indicates a | |
| 65 conditional; IF_COND an opening conditional. INCL means to treat | |
| 66 "..." and <...> as q-char and h-char sequences respectively. IN_I | |
| 67 means this directive should be handled even if -fpreprocessed is in | |
| 68 effect (these are the directives with callback hooks). | |
| 69 | |
| 70 EXPAND is set on directives that are always macro-expanded. */ | |
| 71 #define COND (1 << 0) | |
| 72 #define IF_COND (1 << 1) | |
| 73 #define INCL (1 << 2) | |
| 74 #define IN_I (1 << 3) | |
| 75 #define EXPAND (1 << 4) | |
| 76 #define DEPRECATED (1 << 5) | |
| 77 | |
| 78 /* Defines one #-directive, including how to handle it. */ | |
| 79 typedef void (*directive_handler) (cpp_reader *); | |
| 80 typedef struct directive directive; | |
| 81 struct directive | |
| 82 { | |
| 83 directive_handler handler; /* Function to handle directive. */ | |
| 84 const uchar *name; /* Name of directive. */ | |
| 85 unsigned short length; /* Length of name. */ | |
| 86 unsigned char origin; /* Origin of directive. */ | |
| 87 unsigned char flags; /* Flags describing this directive. */ | |
| 88 }; | |
| 89 | |
| 90 /* Forward declarations. */ | |
| 91 | |
| 92 static void skip_rest_of_line (cpp_reader *); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
93 static void check_eol (cpp_reader *, bool); |
| 0 | 94 static void start_directive (cpp_reader *); |
| 95 static void prepare_directive_trad (cpp_reader *); | |
| 96 static void end_directive (cpp_reader *, int); | |
| 97 static void directive_diagnostics (cpp_reader *, const directive *, int); | |
| 98 static void run_directive (cpp_reader *, int, const char *, size_t); | |
| 99 static char *glue_header_name (cpp_reader *); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
100 static const char *parse_include (cpp_reader *, int *, const cpp_token ***, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
101 source_location *); |
| 0 | 102 static void push_conditional (cpp_reader *, int, int, const cpp_hashnode *); |
| 103 static unsigned int read_flag (cpp_reader *, unsigned int); | |
| 104 static bool strtolinenum (const uchar *, size_t, linenum_type *, bool *); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
105 static void do_diagnostic (cpp_reader *, int, int, int); |
| 0 | 106 static cpp_hashnode *lex_macro_node (cpp_reader *, bool); |
| 107 static int undefine_macros (cpp_reader *, cpp_hashnode *, void *); | |
| 108 static void do_include_common (cpp_reader *, enum include_type); | |
| 109 static struct pragma_entry *lookup_pragma_entry (struct pragma_entry *, | |
| 110 const cpp_hashnode *); | |
| 111 static int count_registered_pragmas (struct pragma_entry *); | |
| 112 static char ** save_registered_pragmas (struct pragma_entry *, char **); | |
| 113 static char ** restore_registered_pragmas (cpp_reader *, struct pragma_entry *, | |
| 114 char **); | |
| 115 static void do_pragma_once (cpp_reader *); | |
| 116 static void do_pragma_poison (cpp_reader *); | |
| 117 static void do_pragma_system_header (cpp_reader *); | |
| 118 static void do_pragma_dependency (cpp_reader *); | |
| 111 | 119 static void do_pragma_warning_or_error (cpp_reader *, bool error); |
| 120 static void do_pragma_warning (cpp_reader *); | |
| 121 static void do_pragma_error (cpp_reader *); | |
| 0 | 122 static void do_linemarker (cpp_reader *); |
| 123 static const cpp_token *get_token_no_padding (cpp_reader *); | |
| 124 static const cpp_token *get__Pragma_string (cpp_reader *); | |
| 111 | 125 static void destringize_and_run (cpp_reader *, const cpp_string *, |
| 126 source_location); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
127 static int parse_answer (cpp_reader *, struct answer **, int, source_location); |
| 0 | 128 static cpp_hashnode *parse_assertion (cpp_reader *, struct answer **, int); |
| 129 static struct answer ** find_answer (cpp_hashnode *, const struct answer *); | |
| 130 static void handle_assertion (cpp_reader *, const char *, int); | |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
131 static void do_pragma_push_macro (cpp_reader *); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
132 static void do_pragma_pop_macro (cpp_reader *); |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
133 static void cpp_pop_definition (cpp_reader *, struct def_pragma_macro *); |
| 0 | 134 |
| 135 /* This is the table of directive handlers. It is ordered by | |
| 136 frequency of occurrence; the numbers at the end are directive | |
| 137 counts from all the source code I have lying around (egcs and libc | |
| 138 CVS as of 1999-05-18, plus grub-0.5.91, linux-2.2.9, and | |
| 139 pcmcia-cs-3.0.9). This is no longer important as directive lookup | |
| 140 is now O(1). All extensions other than #warning, #include_next, | |
| 141 and #import are deprecated. The name is where the extension | |
| 142 appears to have come from. */ | |
| 143 | |
| 144 #define DIRECTIVE_TABLE \ | |
| 145 D(define, T_DEFINE = 0, KANDR, IN_I) /* 270554 */ \ | |
| 146 D(include, T_INCLUDE, KANDR, INCL | EXPAND) /* 52262 */ \ | |
| 147 D(endif, T_ENDIF, KANDR, COND) /* 45855 */ \ | |
| 148 D(ifdef, T_IFDEF, KANDR, COND | IF_COND) /* 22000 */ \ | |
| 149 D(if, T_IF, KANDR, COND | IF_COND | EXPAND) /* 18162 */ \ | |
| 150 D(else, T_ELSE, KANDR, COND) /* 9863 */ \ | |
| 151 D(ifndef, T_IFNDEF, KANDR, COND | IF_COND) /* 9675 */ \ | |
| 152 D(undef, T_UNDEF, KANDR, IN_I) /* 4837 */ \ | |
| 153 D(line, T_LINE, KANDR, EXPAND) /* 2465 */ \ | |
| 154 D(elif, T_ELIF, STDC89, COND | EXPAND) /* 610 */ \ | |
| 155 D(error, T_ERROR, STDC89, 0) /* 475 */ \ | |
| 156 D(pragma, T_PRAGMA, STDC89, IN_I) /* 195 */ \ | |
| 157 D(warning, T_WARNING, EXTENSION, 0) /* 22 */ \ | |
| 158 D(include_next, T_INCLUDE_NEXT, EXTENSION, INCL | EXPAND) /* 19 */ \ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
159 D(ident, T_IDENT, EXTENSION, IN_I) /* 11 */ \ |
| 0 | 160 D(import, T_IMPORT, EXTENSION, INCL | EXPAND) /* 0 ObjC */ \ |
| 161 D(assert, T_ASSERT, EXTENSION, DEPRECATED) /* 0 SVR4 */ \ | |
| 162 D(unassert, T_UNASSERT, EXTENSION, DEPRECATED) /* 0 SVR4 */ \ | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
163 D(sccs, T_SCCS, EXTENSION, IN_I) /* 0 SVR4? */ |
| 0 | 164 |
| 165 /* #sccs is synonymous with #ident. */ | |
| 166 #define do_sccs do_ident | |
| 167 | |
| 168 /* Use the table to generate a series of prototypes, an enum for the | |
| 169 directive names, and an array of directive handlers. */ | |
| 170 | |
| 171 #define D(name, t, o, f) static void do_##name (cpp_reader *); | |
| 172 DIRECTIVE_TABLE | |
| 173 #undef D | |
| 174 | |
| 175 #define D(n, tag, o, f) tag, | |
| 176 enum | |
| 177 { | |
| 178 DIRECTIVE_TABLE | |
| 179 N_DIRECTIVES | |
| 180 }; | |
| 181 #undef D | |
| 182 | |
| 183 #define D(name, t, origin, flags) \ | |
| 184 { do_##name, (const uchar *) #name, \ | |
| 185 sizeof #name - 1, origin, flags }, | |
| 186 static const directive dtable[] = | |
| 187 { | |
| 188 DIRECTIVE_TABLE | |
| 189 }; | |
| 190 #undef D | |
| 111 | 191 |
| 192 /* A NULL-terminated array of directive names for use | |
| 193 when suggesting corrections for misspelled directives. */ | |
| 194 #define D(name, t, origin, flags) #name, | |
| 195 static const char * const directive_names[] = { | |
| 196 DIRECTIVE_TABLE | |
| 197 NULL | |
| 198 }; | |
| 199 #undef D | |
| 200 | |
| 0 | 201 #undef DIRECTIVE_TABLE |
| 202 | |
| 203 /* Wrapper struct directive for linemarkers. | |
| 204 The origin is more or less true - the original K+R cpp | |
| 205 did use this notation in its preprocessed output. */ | |
| 206 static const directive linemarker_dir = | |
| 207 { | |
| 208 do_linemarker, UC"#", 1, KANDR, IN_I | |
| 209 }; | |
| 210 | |
| 211 #define SEEN_EOL() (pfile->cur_token[-1].type == CPP_EOF) | |
| 212 | |
| 213 /* Skip any remaining tokens in a directive. */ | |
| 214 static void | |
| 215 skip_rest_of_line (cpp_reader *pfile) | |
| 216 { | |
| 217 /* Discard all stacked contexts. */ | |
| 218 while (pfile->context->prev) | |
| 219 _cpp_pop_context (pfile); | |
| 220 | |
| 221 /* Sweep up all tokens remaining on the line. */ | |
| 222 if (! SEEN_EOL ()) | |
| 223 while (_cpp_lex_token (pfile)->type != CPP_EOF) | |
| 224 ; | |
| 225 } | |
| 226 | |
| 111 | 227 /* Helper function for check_oel. */ |
| 228 | |
| 0 | 229 static void |
| 111 | 230 check_eol_1 (cpp_reader *pfile, bool expand, int reason) |
| 0 | 231 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
232 if (! SEEN_EOL () && (expand |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
233 ? cpp_get_token (pfile) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
234 : _cpp_lex_token (pfile))->type != CPP_EOF) |
| 111 | 235 cpp_pedwarning (pfile, reason, "extra tokens at end of #%s directive", |
| 236 pfile->directive->name); | |
| 237 } | |
| 238 | |
| 239 /* Variant of check_eol used for Wendif-labels warnings. */ | |
| 240 | |
| 241 static void | |
| 242 check_eol_endif_labels (cpp_reader *pfile) | |
| 243 { | |
| 244 check_eol_1 (pfile, false, CPP_W_ENDIF_LABELS); | |
| 245 } | |
| 246 | |
| 247 /* Ensure there are no stray tokens at the end of a directive. If | |
| 248 EXPAND is true, tokens macro-expanding to nothing are allowed. */ | |
| 249 | |
| 250 static void | |
| 251 check_eol (cpp_reader *pfile, bool expand) | |
| 252 { | |
| 253 check_eol_1 (pfile, expand, CPP_W_NONE); | |
| 0 | 254 } |
| 255 | |
| 256 /* Ensure there are no stray tokens other than comments at the end of | |
| 257 a directive, and gather the comments. */ | |
| 258 static const cpp_token ** | |
| 259 check_eol_return_comments (cpp_reader *pfile) | |
| 260 { | |
| 261 size_t c; | |
| 262 size_t capacity = 8; | |
| 263 const cpp_token **buf; | |
| 264 | |
| 265 buf = XNEWVEC (const cpp_token *, capacity); | |
| 266 c = 0; | |
| 267 if (! SEEN_EOL ()) | |
| 268 { | |
| 269 while (1) | |
| 270 { | |
| 271 const cpp_token *tok; | |
| 272 | |
| 273 tok = _cpp_lex_token (pfile); | |
| 274 if (tok->type == CPP_EOF) | |
| 275 break; | |
| 276 if (tok->type != CPP_COMMENT) | |
| 277 cpp_error (pfile, CPP_DL_PEDWARN, | |
| 278 "extra tokens at end of #%s directive", | |
| 279 pfile->directive->name); | |
| 280 else | |
| 281 { | |
| 282 if (c + 1 >= capacity) | |
| 283 { | |
| 284 capacity *= 2; | |
| 285 buf = XRESIZEVEC (const cpp_token *, buf, capacity); | |
| 286 } | |
| 287 buf[c] = tok; | |
| 288 ++c; | |
| 289 } | |
| 290 } | |
| 291 } | |
| 292 buf[c] = NULL; | |
| 293 return buf; | |
| 294 } | |
| 295 | |
| 296 /* Called when entering a directive, _Pragma or command-line directive. */ | |
| 297 static void | |
| 298 start_directive (cpp_reader *pfile) | |
| 299 { | |
| 300 /* Setup in-directive state. */ | |
| 301 pfile->state.in_directive = 1; | |
| 302 pfile->state.save_comments = 0; | |
| 303 pfile->directive_result.type = CPP_PADDING; | |
| 304 | |
| 305 /* Some handlers need the position of the # for diagnostics. */ | |
| 306 pfile->directive_line = pfile->line_table->highest_line; | |
| 307 } | |
| 308 | |
| 309 /* Called when leaving a directive, _Pragma or command-line directive. */ | |
| 310 static void | |
| 311 end_directive (cpp_reader *pfile, int skip_line) | |
| 312 { | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
313 if (CPP_OPTION (pfile, traditional)) |
| 0 | 314 { |
| 315 /* Revert change of prepare_directive_trad. */ | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
316 if (!pfile->state.in_deferred_pragma) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
317 pfile->state.prevent_expansion--; |
| 0 | 318 |
| 319 if (pfile->directive != &dtable[T_DEFINE]) | |
| 320 _cpp_remove_overlay (pfile); | |
| 321 } | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
322 else if (pfile->state.in_deferred_pragma) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
323 ; |
| 0 | 324 /* We don't skip for an assembler #. */ |
| 325 else if (skip_line) | |
| 326 { | |
| 327 skip_rest_of_line (pfile); | |
| 328 if (!pfile->keep_tokens) | |
| 329 { | |
| 330 pfile->cur_run = &pfile->base_run; | |
| 331 pfile->cur_token = pfile->base_run.base; | |
| 332 } | |
| 333 } | |
| 334 | |
| 335 /* Restore state. */ | |
| 336 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); | |
| 337 pfile->state.in_directive = 0; | |
| 338 pfile->state.in_expression = 0; | |
| 339 pfile->state.angled_headers = 0; | |
| 340 pfile->directive = 0; | |
| 341 } | |
| 342 | |
| 343 /* Prepare to handle the directive in pfile->directive. */ | |
| 344 static void | |
| 345 prepare_directive_trad (cpp_reader *pfile) | |
| 346 { | |
| 347 if (pfile->directive != &dtable[T_DEFINE]) | |
| 348 { | |
| 349 bool no_expand = (pfile->directive | |
| 350 && ! (pfile->directive->flags & EXPAND)); | |
| 351 bool was_skipping = pfile->state.skipping; | |
| 352 | |
| 353 pfile->state.in_expression = (pfile->directive == &dtable[T_IF] | |
| 354 || pfile->directive == &dtable[T_ELIF]); | |
| 355 if (pfile->state.in_expression) | |
| 356 pfile->state.skipping = false; | |
| 357 | |
| 358 if (no_expand) | |
| 359 pfile->state.prevent_expansion++; | |
| 111 | 360 _cpp_scan_out_logical_line (pfile, NULL, false); |
| 0 | 361 if (no_expand) |
| 362 pfile->state.prevent_expansion--; | |
| 363 | |
| 364 pfile->state.skipping = was_skipping; | |
| 365 _cpp_overlay_buffer (pfile, pfile->out.base, | |
| 366 pfile->out.cur - pfile->out.base); | |
| 367 } | |
| 368 | |
| 369 /* Stop ISO C from expanding anything. */ | |
| 370 pfile->state.prevent_expansion++; | |
| 371 } | |
| 372 | |
| 373 /* Output diagnostics for a directive DIR. INDENTED is nonzero if | |
| 374 the '#' was indented. */ | |
| 375 static void | |
| 376 directive_diagnostics (cpp_reader *pfile, const directive *dir, int indented) | |
| 377 { | |
| 378 /* Issue -pedantic or deprecated warnings for extensions. We let | |
| 379 -pedantic take precedence if both are applicable. */ | |
| 380 if (! pfile->state.skipping) | |
| 381 { | |
| 382 if (dir->origin == EXTENSION | |
| 383 && !(dir == &dtable[T_IMPORT] && CPP_OPTION (pfile, objc)) | |
| 384 && CPP_PEDANTIC (pfile)) | |
| 385 cpp_error (pfile, CPP_DL_PEDWARN, "#%s is a GCC extension", dir->name); | |
| 386 else if (((dir->flags & DEPRECATED) != 0 | |
| 387 || (dir == &dtable[T_IMPORT] && !CPP_OPTION (pfile, objc))) | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
388 && CPP_OPTION (pfile, cpp_warn_deprecated)) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
389 cpp_warning (pfile, CPP_W_DEPRECATED, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
390 "#%s is a deprecated GCC extension", dir->name); |
| 0 | 391 } |
| 392 | |
| 393 /* Traditionally, a directive is ignored unless its # is in | |
| 394 column 1. Therefore in code intended to work with K+R | |
| 395 compilers, directives added by C89 must have their # | |
| 396 indented, and directives present in traditional C must not. | |
| 397 This is true even of directives in skipped conditional | |
| 398 blocks. #elif cannot be used at all. */ | |
| 399 if (CPP_WTRADITIONAL (pfile)) | |
| 400 { | |
| 401 if (dir == &dtable[T_ELIF]) | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
402 cpp_warning (pfile, CPP_W_TRADITIONAL, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
403 "suggest not using #elif in traditional C"); |
| 0 | 404 else if (indented && dir->origin == KANDR) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
405 cpp_warning (pfile, CPP_W_TRADITIONAL, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
406 "traditional C ignores #%s with the # indented", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
407 dir->name); |
| 0 | 408 else if (!indented && dir->origin != KANDR) |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
409 cpp_warning (pfile, CPP_W_TRADITIONAL, |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
410 "suggest hiding #%s from traditional C with an indented #", |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
411 dir->name); |
| 0 | 412 } |
| 413 } | |
| 414 | |
| 415 /* Check if we have a known directive. INDENTED is nonzero if the | |
| 416 '#' of the directive was indented. This function is in this file | |
| 417 to save unnecessarily exporting dtable etc. to lex.c. Returns | |
| 418 nonzero if the line of tokens has been handled, zero if we should | |
| 419 continue processing the line. */ | |
| 420 int | |
| 421 _cpp_handle_directive (cpp_reader *pfile, int indented) | |
| 422 { | |
| 423 const directive *dir = 0; | |
| 424 const cpp_token *dname; | |
| 425 bool was_parsing_args = pfile->state.parsing_args; | |
| 426 bool was_discarding_output = pfile->state.discarding_output; | |
| 427 int skip = 1; | |
| 428 | |
| 429 if (was_discarding_output) | |
| 430 pfile->state.prevent_expansion = 0; | |
| 431 | |
| 432 if (was_parsing_args) | |
| 433 { | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
434 if (CPP_OPTION (pfile, cpp_pedantic)) |
| 0 | 435 cpp_error (pfile, CPP_DL_PEDWARN, |
| 436 "embedding a directive within macro arguments is not portable"); | |
| 437 pfile->state.parsing_args = 0; | |
| 438 pfile->state.prevent_expansion = 0; | |
| 439 } | |
| 440 start_directive (pfile); | |
| 441 dname = _cpp_lex_token (pfile); | |
| 442 | |
| 443 if (dname->type == CPP_NAME) | |
| 444 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
445 if (dname->val.node.node->is_directive) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
446 dir = &dtable[dname->val.node.node->directive_index]; |
| 0 | 447 } |
| 448 /* We do not recognize the # followed by a number extension in | |
| 449 assembler code. */ | |
| 450 else if (dname->type == CPP_NUMBER && CPP_OPTION (pfile, lang) != CLK_ASM) | |
| 451 { | |
| 452 dir = &linemarker_dir; | |
| 453 if (CPP_PEDANTIC (pfile) && ! CPP_OPTION (pfile, preprocessed) | |
| 454 && ! pfile->state.skipping) | |
| 455 cpp_error (pfile, CPP_DL_PEDWARN, | |
| 456 "style of line directive is a GCC extension"); | |
| 457 } | |
| 458 | |
| 459 if (dir) | |
| 460 { | |
| 461 /* If we have a directive that is not an opening conditional, | |
| 462 invalidate any control macro. */ | |
| 463 if (! (dir->flags & IF_COND)) | |
| 464 pfile->mi_valid = false; | |
| 465 | |
| 466 /* Kluge alert. In order to be sure that code like this | |
| 467 | |
| 468 #define HASH # | |
| 469 HASH define foo bar | |
| 470 | |
| 471 does not cause '#define foo bar' to get executed when | |
| 472 compiled with -save-temps, we recognize directives in | |
| 473 -fpreprocessed mode only if the # is in column 1. macro.c | |
| 474 puts a space in front of any '#' at the start of a macro. | |
| 475 | |
| 476 We exclude the -fdirectives-only case because macro expansion | |
| 477 has not been performed yet, and block comments can cause spaces | |
| 111 | 478 to precede the directive. */ |
| 0 | 479 if (CPP_OPTION (pfile, preprocessed) |
| 480 && !CPP_OPTION (pfile, directives_only) | |
| 481 && (indented || !(dir->flags & IN_I))) | |
| 482 { | |
| 483 skip = 0; | |
| 484 dir = 0; | |
| 485 } | |
| 486 else | |
| 487 { | |
| 488 /* In failed conditional groups, all non-conditional | |
| 489 directives are ignored. Before doing that, whether | |
| 490 skipping or not, we should lex angle-bracketed headers | |
| 491 correctly, and maybe output some diagnostics. */ | |
| 492 pfile->state.angled_headers = dir->flags & INCL; | |
| 493 pfile->state.directive_wants_padding = dir->flags & INCL; | |
| 494 if (! CPP_OPTION (pfile, preprocessed)) | |
| 495 directive_diagnostics (pfile, dir, indented); | |
| 496 if (pfile->state.skipping && !(dir->flags & COND)) | |
| 497 dir = 0; | |
| 498 } | |
| 499 } | |
| 500 else if (dname->type == CPP_EOF) | |
| 501 ; /* CPP_EOF is the "null directive". */ | |
| 502 else | |
| 503 { | |
| 504 /* An unknown directive. Don't complain about it in assembly | |
| 505 source: we don't know where the comments are, and # may | |
| 506 introduce assembler pseudo-ops. Don't complain about invalid | |
| 507 directives in skipped conditional groups (6.10 p4). */ | |
| 508 if (CPP_OPTION (pfile, lang) == CLK_ASM) | |
| 509 skip = 0; | |
| 510 else if (!pfile->state.skipping) | |
| 111 | 511 { |
| 512 const char *unrecognized | |
| 513 = (const char *)cpp_token_as_text (pfile, dname); | |
| 514 const char *hint = NULL; | |
| 515 | |
| 516 /* Call back into gcc to get a spelling suggestion. Ideally | |
| 517 we'd just use best_match from gcc/spellcheck.h (and filter | |
| 518 out the uncommon directives), but that requires moving it | |
| 519 to a support library. */ | |
| 520 if (pfile->cb.get_suggestion) | |
| 521 hint = pfile->cb.get_suggestion (pfile, unrecognized, | |
| 522 directive_names); | |
| 523 | |
| 524 if (hint) | |
| 525 { | |
| 526 rich_location richloc (pfile->line_table, dname->src_loc); | |
| 527 source_range misspelled_token_range | |
| 528 = get_range_from_loc (pfile->line_table, dname->src_loc); | |
| 529 richloc.add_fixit_replace (misspelled_token_range, hint); | |
| 530 cpp_error_at_richloc (pfile, CPP_DL_ERROR, &richloc, | |
| 531 "invalid preprocessing directive #%s;" | |
| 532 " did you mean #%s?", | |
| 533 unrecognized, hint); | |
| 534 } | |
| 535 else | |
| 536 cpp_error (pfile, CPP_DL_ERROR, | |
| 537 "invalid preprocessing directive #%s", | |
| 538 unrecognized); | |
| 539 } | |
| 0 | 540 } |
| 541 | |
| 542 pfile->directive = dir; | |
| 543 if (CPP_OPTION (pfile, traditional)) | |
| 544 prepare_directive_trad (pfile); | |
| 545 | |
| 546 if (dir) | |
| 547 pfile->directive->handler (pfile); | |
| 548 else if (skip == 0) | |
| 549 _cpp_backup_tokens (pfile, 1); | |
| 550 | |
| 551 end_directive (pfile, skip); | |
| 552 if (was_parsing_args && !pfile->state.in_deferred_pragma) | |
| 553 { | |
| 554 /* Restore state when within macro args. */ | |
| 555 pfile->state.parsing_args = 2; | |
| 556 pfile->state.prevent_expansion = 1; | |
| 557 } | |
| 558 if (was_discarding_output) | |
| 559 pfile->state.prevent_expansion = 1; | |
| 560 return skip; | |
| 561 } | |
| 562 | |
| 563 /* Directive handler wrapper used by the command line option | |
| 564 processor. BUF is \n terminated. */ | |
| 565 static void | |
| 566 run_directive (cpp_reader *pfile, int dir_no, const char *buf, size_t count) | |
| 567 { | |
| 568 cpp_push_buffer (pfile, (const uchar *) buf, count, | |
| 569 /* from_stage3 */ true); | |
| 570 start_directive (pfile); | |
| 571 | |
| 572 /* This is a short-term fix to prevent a leading '#' being | |
| 573 interpreted as a directive. */ | |
| 574 _cpp_clean_line (pfile); | |
| 575 | |
| 576 pfile->directive = &dtable[dir_no]; | |
| 577 if (CPP_OPTION (pfile, traditional)) | |
| 578 prepare_directive_trad (pfile); | |
| 579 pfile->directive->handler (pfile); | |
| 580 end_directive (pfile, 1); | |
| 581 _cpp_pop_buffer (pfile); | |
| 582 } | |
| 583 | |
| 584 /* Checks for validity the macro name in #define, #undef, #ifdef and | |
| 585 #ifndef directives. IS_DEF_OR_UNDEF is true if this call is | |
| 586 processing a #define or #undefine directive, and false | |
| 587 otherwise. */ | |
| 588 static cpp_hashnode * | |
| 589 lex_macro_node (cpp_reader *pfile, bool is_def_or_undef) | |
| 590 { | |
| 591 const cpp_token *token = _cpp_lex_token (pfile); | |
| 592 | |
| 593 /* The token immediately after #define must be an identifier. That | |
| 594 identifier may not be "defined", per C99 6.10.8p4. | |
| 595 In C++, it may not be any of the "named operators" either, | |
| 596 per C++98 [lex.digraph], [lex.key]. | |
| 597 Finally, the identifier may not have been poisoned. (In that case | |
| 598 the lexer has issued the error message for us.) */ | |
| 599 | |
| 600 if (token->type == CPP_NAME) | |
| 601 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
602 cpp_hashnode *node = token->val.node.node; |
| 0 | 603 |
| 604 if (is_def_or_undef && node == pfile->spec_nodes.n_defined) | |
| 605 cpp_error (pfile, CPP_DL_ERROR, | |
| 606 "\"defined\" cannot be used as a macro name"); | |
| 111 | 607 else if (is_def_or_undef |
| 608 && (node == pfile->spec_nodes.n__has_include__ | |
| 609 || node == pfile->spec_nodes.n__has_include_next__)) | |
| 610 cpp_error (pfile, CPP_DL_ERROR, | |
| 611 "\"__has_include__\" cannot be used as a macro name"); | |
| 0 | 612 else if (! (node->flags & NODE_POISONED)) |
| 613 return node; | |
| 614 } | |
| 615 else if (token->flags & NAMED_OP) | |
| 616 cpp_error (pfile, CPP_DL_ERROR, | |
| 617 "\"%s\" cannot be used as a macro name as it is an operator in C++", | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
618 NODE_NAME (token->val.node.node)); |
| 0 | 619 else if (token->type == CPP_EOF) |
| 620 cpp_error (pfile, CPP_DL_ERROR, "no macro name given in #%s directive", | |
| 621 pfile->directive->name); | |
| 622 else | |
| 623 cpp_error (pfile, CPP_DL_ERROR, "macro names must be identifiers"); | |
| 624 | |
| 625 return NULL; | |
| 626 } | |
| 627 | |
| 628 /* Process a #define directive. Most work is done in macro.c. */ | |
| 629 static void | |
| 630 do_define (cpp_reader *pfile) | |
| 631 { | |
| 632 cpp_hashnode *node = lex_macro_node (pfile, true); | |
| 633 | |
| 634 if (node) | |
| 635 { | |
| 636 /* If we have been requested to expand comments into macros, | |
| 637 then re-enable saving of comments. */ | |
| 638 pfile->state.save_comments = | |
| 639 ! CPP_OPTION (pfile, discard_comments_in_macro_exp); | |
| 640 | |
| 641 if (pfile->cb.before_define) | |
| 642 pfile->cb.before_define (pfile); | |
| 643 | |
| 644 if (_cpp_create_definition (pfile, node)) | |
| 645 if (pfile->cb.define) | |
| 646 pfile->cb.define (pfile, pfile->directive_line, node); | |
| 647 | |
| 648 node->flags &= ~NODE_USED; | |
| 649 } | |
| 650 } | |
| 651 | |
| 652 /* Handle #undef. Mark the identifier NT_VOID in the hash table. */ | |
| 653 static void | |
| 654 do_undef (cpp_reader *pfile) | |
| 655 { | |
| 656 cpp_hashnode *node = lex_macro_node (pfile, true); | |
| 657 | |
| 658 if (node) | |
| 659 { | |
| 660 if (pfile->cb.before_define) | |
| 661 pfile->cb.before_define (pfile); | |
| 662 | |
| 663 if (pfile->cb.undef) | |
| 664 pfile->cb.undef (pfile, pfile->directive_line, node); | |
| 665 | |
| 666 /* 6.10.3.5 paragraph 2: [#undef] is ignored if the specified | |
| 667 identifier is not currently defined as a macro name. */ | |
| 668 if (node->type == NT_MACRO) | |
| 669 { | |
| 670 if (node->flags & NODE_WARN) | |
| 671 cpp_error (pfile, CPP_DL_WARNING, | |
| 672 "undefining \"%s\"", NODE_NAME (node)); | |
| 111 | 673 else if ((node->flags & NODE_BUILTIN) |
| 674 && CPP_OPTION (pfile, warn_builtin_macro_redefined)) | |
| 675 cpp_warning_with_line (pfile, CPP_W_BUILTIN_MACRO_REDEFINED, | |
| 676 pfile->directive_line, 0, | |
| 677 "undefining \"%s\"", NODE_NAME (node)); | |
| 0 | 678 |
| 679 if (CPP_OPTION (pfile, warn_unused_macros)) | |
| 680 _cpp_warn_if_unused_macro (pfile, node, NULL); | |
| 681 | |
| 682 _cpp_free_definition (node); | |
| 683 } | |
| 684 } | |
| 685 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
686 check_eol (pfile, false); |
| 0 | 687 } |
| 688 | |
| 689 /* Undefine a single macro/assertion/whatever. */ | |
| 690 | |
| 691 static int | |
| 692 undefine_macros (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *h, | |
| 693 void *data_p ATTRIBUTE_UNUSED) | |
| 694 { | |
| 695 /* Body of _cpp_free_definition inlined here for speed. | |
| 696 Macros and assertions no longer have anything to free. */ | |
| 697 h->type = NT_VOID; | |
| 698 h->flags &= ~(NODE_POISONED|NODE_BUILTIN|NODE_DISABLED|NODE_USED); | |
| 699 return 1; | |
| 700 } | |
| 701 | |
| 702 /* Undefine all macros and assertions. */ | |
| 703 | |
| 704 void | |
| 705 cpp_undef_all (cpp_reader *pfile) | |
| 706 { | |
| 707 cpp_forall_identifiers (pfile, undefine_macros, NULL); | |
| 708 } | |
| 709 | |
| 710 | |
| 711 /* Helper routine used by parse_include. Reinterpret the current line | |
| 712 as an h-char-sequence (< ... >); we are looking at the first token | |
| 713 after the <. Returns a malloced filename. */ | |
| 714 static char * | |
| 715 glue_header_name (cpp_reader *pfile) | |
| 716 { | |
| 717 const cpp_token *token; | |
| 718 char *buffer; | |
| 719 size_t len, total_len = 0, capacity = 1024; | |
| 720 | |
| 721 /* To avoid lexed tokens overwriting our glued name, we can only | |
| 722 allocate from the string pool once we've lexed everything. */ | |
| 723 buffer = XNEWVEC (char, capacity); | |
| 724 for (;;) | |
| 725 { | |
| 726 token = get_token_no_padding (pfile); | |
| 727 | |
| 728 if (token->type == CPP_GREATER) | |
| 729 break; | |
| 730 if (token->type == CPP_EOF) | |
| 731 { | |
| 732 cpp_error (pfile, CPP_DL_ERROR, "missing terminating > character"); | |
| 733 break; | |
| 734 } | |
| 735 | |
| 736 len = cpp_token_len (token) + 2; /* Leading space, terminating \0. */ | |
| 737 if (total_len + len > capacity) | |
| 738 { | |
| 739 capacity = (capacity + len) * 2; | |
| 740 buffer = XRESIZEVEC (char, buffer, capacity); | |
| 741 } | |
| 742 | |
| 743 if (token->flags & PREV_WHITE) | |
| 744 buffer[total_len++] = ' '; | |
| 745 | |
| 746 total_len = (cpp_spell_token (pfile, token, (uchar *) &buffer[total_len], | |
| 747 true) | |
| 748 - (uchar *) buffer); | |
| 749 } | |
| 750 | |
| 751 buffer[total_len] = '\0'; | |
| 752 return buffer; | |
| 753 } | |
| 754 | |
| 755 /* Returns the file name of #include, #include_next, #import and | |
| 756 #pragma dependency. The string is malloced and the caller should | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
757 free it. Returns NULL on error. LOCATION is the source location |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
758 of the file name. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
759 |
| 0 | 760 static const char * |
| 761 parse_include (cpp_reader *pfile, int *pangle_brackets, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
762 const cpp_token ***buf, source_location *location) |
| 0 | 763 { |
| 764 char *fname; | |
| 765 const cpp_token *header; | |
| 766 | |
| 767 /* Allow macro expansion. */ | |
| 768 header = get_token_no_padding (pfile); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
769 *location = header->src_loc; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
770 if ((header->type == CPP_STRING && header->val.str.text[0] != 'R') |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
771 || header->type == CPP_HEADER_NAME) |
| 0 | 772 { |
| 773 fname = XNEWVEC (char, header->val.str.len - 1); | |
| 774 memcpy (fname, header->val.str.text + 1, header->val.str.len - 2); | |
| 775 fname[header->val.str.len - 2] = '\0'; | |
| 776 *pangle_brackets = header->type == CPP_HEADER_NAME; | |
| 777 } | |
| 778 else if (header->type == CPP_LESS) | |
| 779 { | |
| 780 fname = glue_header_name (pfile); | |
| 781 *pangle_brackets = 1; | |
| 782 } | |
| 783 else | |
| 784 { | |
| 785 const unsigned char *dir; | |
| 786 | |
| 787 if (pfile->directive == &dtable[T_PRAGMA]) | |
| 788 dir = UC"pragma dependency"; | |
| 789 else | |
| 790 dir = pfile->directive->name; | |
| 791 cpp_error (pfile, CPP_DL_ERROR, "#%s expects \"FILENAME\" or <FILENAME>", | |
| 792 dir); | |
| 793 | |
| 794 return NULL; | |
| 795 } | |
| 796 | |
| 797 if (pfile->directive == &dtable[T_PRAGMA]) | |
| 798 { | |
| 799 /* This pragma allows extra tokens after the file name. */ | |
| 800 } | |
| 801 else if (buf == NULL || CPP_OPTION (pfile, discard_comments)) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
802 check_eol (pfile, true); |
| 0 | 803 else |
| 804 { | |
| 805 /* If we are not discarding comments, then gather them while | |
| 806 doing the eol check. */ | |
| 807 *buf = check_eol_return_comments (pfile); | |
| 808 } | |
| 809 | |
| 810 return fname; | |
| 811 } | |
| 812 | |
| 813 /* Handle #include, #include_next and #import. */ | |
| 814 static void | |
| 815 do_include_common (cpp_reader *pfile, enum include_type type) | |
| 816 { | |
| 817 const char *fname; | |
| 818 int angle_brackets; | |
| 819 const cpp_token **buf = NULL; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
820 source_location location; |
| 0 | 821 |
| 822 /* Re-enable saving of comments if requested, so that the include | |
| 823 callback can dump comments which follow #include. */ | |
| 824 pfile->state.save_comments = ! CPP_OPTION (pfile, discard_comments); | |
| 825 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
826 fname = parse_include (pfile, &angle_brackets, &buf, &location); |
| 0 | 827 if (!fname) |
| 828 { | |
| 829 if (buf) | |
| 830 XDELETEVEC (buf); | |
| 831 return; | |
| 832 } | |
| 833 | |
| 834 if (!*fname) | |
| 835 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
836 cpp_error_with_line (pfile, CPP_DL_ERROR, location, 0, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
837 "empty filename in #%s", |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
838 pfile->directive->name); |
| 0 | 839 XDELETEVEC (fname); |
| 840 if (buf) | |
| 841 XDELETEVEC (buf); | |
| 842 return; | |
| 843 } | |
| 844 | |
| 845 /* Prevent #include recursion. */ | |
| 846 if (pfile->line_table->depth >= CPP_STACK_MAX) | |
| 847 cpp_error (pfile, CPP_DL_ERROR, "#include nested too deeply"); | |
| 848 else | |
| 849 { | |
| 850 /* Get out of macro context, if we are. */ | |
| 851 skip_rest_of_line (pfile); | |
| 852 | |
| 853 if (pfile->cb.include) | |
| 854 pfile->cb.include (pfile, pfile->directive_line, | |
| 855 pfile->directive->name, fname, angle_brackets, | |
| 856 buf); | |
| 857 | |
| 111 | 858 _cpp_stack_include (pfile, fname, angle_brackets, type, location); |
| 0 | 859 } |
| 860 | |
| 861 XDELETEVEC (fname); | |
| 862 if (buf) | |
| 863 XDELETEVEC (buf); | |
| 864 } | |
| 865 | |
| 866 static void | |
| 867 do_include (cpp_reader *pfile) | |
| 868 { | |
| 869 do_include_common (pfile, IT_INCLUDE); | |
| 870 } | |
| 871 | |
| 872 static void | |
| 873 do_import (cpp_reader *pfile) | |
| 874 { | |
| 875 do_include_common (pfile, IT_IMPORT); | |
| 876 } | |
| 877 | |
| 878 static void | |
| 879 do_include_next (cpp_reader *pfile) | |
| 880 { | |
| 881 enum include_type type = IT_INCLUDE_NEXT; | |
| 882 | |
| 883 /* If this is the primary source file, warn and use the normal | |
| 884 search logic. */ | |
| 885 if (cpp_in_primary_file (pfile)) | |
| 886 { | |
| 887 cpp_error (pfile, CPP_DL_WARNING, | |
| 888 "#include_next in primary source file"); | |
| 889 type = IT_INCLUDE; | |
| 890 } | |
| 891 do_include_common (pfile, type); | |
| 892 } | |
| 893 | |
| 894 /* Subroutine of do_linemarker. Read possible flags after file name. | |
| 895 LAST is the last flag seen; 0 if this is the first flag. Return the | |
| 896 flag if it is valid, 0 at the end of the directive. Otherwise | |
| 897 complain. */ | |
| 898 static unsigned int | |
| 899 read_flag (cpp_reader *pfile, unsigned int last) | |
| 900 { | |
| 901 const cpp_token *token = _cpp_lex_token (pfile); | |
| 902 | |
| 903 if (token->type == CPP_NUMBER && token->val.str.len == 1) | |
| 904 { | |
| 905 unsigned int flag = token->val.str.text[0] - '0'; | |
| 906 | |
| 907 if (flag > last && flag <= 4 | |
| 908 && (flag != 4 || last == 3) | |
| 909 && (flag != 2 || last == 0)) | |
| 910 return flag; | |
| 911 } | |
| 912 | |
| 913 if (token->type != CPP_EOF) | |
| 914 cpp_error (pfile, CPP_DL_ERROR, "invalid flag \"%s\" in line directive", | |
| 915 cpp_token_as_text (pfile, token)); | |
| 916 return 0; | |
| 917 } | |
| 918 | |
| 919 /* Subroutine of do_line and do_linemarker. Convert a number in STR, | |
| 920 of length LEN, to binary; store it in NUMP, and return false if the | |
| 921 number was well-formed, true if not. WRAPPED is set to true if the | |
| 922 number did not fit into 'unsigned long'. */ | |
| 923 static bool | |
| 924 strtolinenum (const uchar *str, size_t len, linenum_type *nump, bool *wrapped) | |
| 925 { | |
| 926 linenum_type reg = 0; | |
| 927 linenum_type reg_prev = 0; | |
| 928 | |
| 929 uchar c; | |
| 930 *wrapped = false; | |
| 931 while (len--) | |
| 932 { | |
| 933 c = *str++; | |
| 934 if (!ISDIGIT (c)) | |
| 935 return true; | |
| 936 reg *= 10; | |
| 937 reg += c - '0'; | |
| 938 if (reg < reg_prev) | |
| 939 *wrapped = true; | |
| 940 reg_prev = reg; | |
| 941 } | |
| 942 *nump = reg; | |
| 943 return false; | |
| 944 } | |
| 945 | |
| 946 /* Interpret #line command. | |
| 947 Note that the filename string (if any) is a true string constant | |
| 948 (escapes are interpreted), unlike in #line. */ | |
| 949 static void | |
| 950 do_line (cpp_reader *pfile) | |
| 951 { | |
| 111 | 952 struct line_maps *line_table = pfile->line_table; |
| 953 const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table); | |
| 0 | 954 |
| 955 /* skip_rest_of_line() may cause line table to be realloc()ed so note down | |
| 956 sysp right now. */ | |
| 957 | |
| 111 | 958 unsigned char map_sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (map); |
| 0 | 959 const cpp_token *token; |
| 111 | 960 const char *new_file = ORDINARY_MAP_FILE_NAME (map); |
| 0 | 961 linenum_type new_lineno; |
| 962 | |
| 963 /* C99 raised the minimum limit on #line numbers. */ | |
| 964 linenum_type cap = CPP_OPTION (pfile, c99) ? 2147483647 : 32767; | |
| 965 bool wrapped; | |
| 966 | |
| 967 /* #line commands expand macros. */ | |
| 968 token = cpp_get_token (pfile); | |
| 969 if (token->type != CPP_NUMBER | |
| 970 || strtolinenum (token->val.str.text, token->val.str.len, | |
| 971 &new_lineno, &wrapped)) | |
| 972 { | |
| 973 if (token->type == CPP_EOF) | |
| 974 cpp_error (pfile, CPP_DL_ERROR, "unexpected end of file after #line"); | |
| 975 else | |
| 976 cpp_error (pfile, CPP_DL_ERROR, | |
| 977 "\"%s\" after #line is not a positive integer", | |
| 978 cpp_token_as_text (pfile, token)); | |
| 979 return; | |
| 980 } | |
| 981 | |
| 982 if (CPP_PEDANTIC (pfile) && (new_lineno == 0 || new_lineno > cap || wrapped)) | |
| 983 cpp_error (pfile, CPP_DL_PEDWARN, "line number out of range"); | |
| 984 else if (wrapped) | |
| 985 cpp_error (pfile, CPP_DL_WARNING, "line number out of range"); | |
| 986 | |
| 987 token = cpp_get_token (pfile); | |
| 988 if (token->type == CPP_STRING) | |
| 989 { | |
| 990 cpp_string s = { 0, 0 }; | |
| 991 if (cpp_interpret_string_notranslate (pfile, &token->val.str, 1, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
992 &s, CPP_STRING)) |
| 0 | 993 new_file = (const char *)s.text; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
994 check_eol (pfile, true); |
| 0 | 995 } |
| 996 else if (token->type != CPP_EOF) | |
| 997 { | |
| 998 cpp_error (pfile, CPP_DL_ERROR, "\"%s\" is not a valid filename", | |
| 999 cpp_token_as_text (pfile, token)); | |
| 1000 return; | |
| 1001 } | |
| 1002 | |
| 1003 skip_rest_of_line (pfile); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1004 _cpp_do_file_change (pfile, LC_RENAME_VERBATIM, new_file, new_lineno, |
| 0 | 1005 map_sysp); |
| 111 | 1006 line_table->seen_line_directive = true; |
| 0 | 1007 } |
| 1008 | |
| 1009 /* Interpret the # 44 "file" [flags] notation, which has slightly | |
| 1010 different syntax and semantics from #line: Flags are allowed, | |
| 1011 and we never complain about the line number being too big. */ | |
| 1012 static void | |
| 1013 do_linemarker (cpp_reader *pfile) | |
| 1014 { | |
| 111 | 1015 struct line_maps *line_table = pfile->line_table; |
| 1016 const line_map_ordinary *map = LINEMAPS_LAST_ORDINARY_MAP (line_table); | |
| 0 | 1017 const cpp_token *token; |
| 111 | 1018 const char *new_file = ORDINARY_MAP_FILE_NAME (map); |
| 0 | 1019 linenum_type new_lineno; |
| 111 | 1020 unsigned int new_sysp = ORDINARY_MAP_IN_SYSTEM_HEADER_P (map); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1021 enum lc_reason reason = LC_RENAME_VERBATIM; |
| 0 | 1022 int flag; |
| 1023 bool wrapped; | |
| 1024 | |
| 1025 /* Back up so we can get the number again. Putting this in | |
| 1026 _cpp_handle_directive risks two calls to _cpp_backup_tokens in | |
| 1027 some circumstances, which can segfault. */ | |
| 1028 _cpp_backup_tokens (pfile, 1); | |
| 1029 | |
| 1030 /* #line commands expand macros. */ | |
| 1031 token = cpp_get_token (pfile); | |
| 1032 if (token->type != CPP_NUMBER | |
| 1033 || strtolinenum (token->val.str.text, token->val.str.len, | |
| 1034 &new_lineno, &wrapped)) | |
| 1035 { | |
| 1036 /* Unlike #line, there does not seem to be a way to get an EOF | |
| 1037 here. So, it should be safe to always spell the token. */ | |
| 1038 cpp_error (pfile, CPP_DL_ERROR, | |
| 1039 "\"%s\" after # is not a positive integer", | |
| 1040 cpp_token_as_text (pfile, token)); | |
| 1041 return; | |
| 1042 } | |
| 1043 | |
| 1044 token = cpp_get_token (pfile); | |
| 1045 if (token->type == CPP_STRING) | |
| 1046 { | |
| 1047 cpp_string s = { 0, 0 }; | |
| 1048 if (cpp_interpret_string_notranslate (pfile, &token->val.str, | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1049 1, &s, CPP_STRING)) |
| 0 | 1050 new_file = (const char *)s.text; |
| 1051 | |
| 1052 new_sysp = 0; | |
| 1053 flag = read_flag (pfile, 0); | |
| 1054 if (flag == 1) | |
| 1055 { | |
| 1056 reason = LC_ENTER; | |
| 1057 /* Fake an include for cpp_included (). */ | |
| 1058 _cpp_fake_include (pfile, new_file); | |
| 1059 flag = read_flag (pfile, flag); | |
| 1060 } | |
| 1061 else if (flag == 2) | |
| 1062 { | |
| 1063 reason = LC_LEAVE; | |
| 1064 flag = read_flag (pfile, flag); | |
| 1065 } | |
| 1066 if (flag == 3) | |
| 1067 { | |
| 1068 new_sysp = 1; | |
| 1069 flag = read_flag (pfile, flag); | |
| 1070 if (flag == 4) | |
| 1071 new_sysp = 2; | |
| 1072 } | |
| 1073 pfile->buffer->sysp = new_sysp; | |
| 1074 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1075 check_eol (pfile, false); |
| 0 | 1076 } |
| 1077 else if (token->type != CPP_EOF) | |
| 1078 { | |
| 1079 cpp_error (pfile, CPP_DL_ERROR, "\"%s\" is not a valid filename", | |
| 1080 cpp_token_as_text (pfile, token)); | |
| 1081 return; | |
| 1082 } | |
| 1083 | |
| 1084 skip_rest_of_line (pfile); | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1085 |
| 111 | 1086 if (reason == LC_LEAVE) |
| 1087 { | |
| 1088 /* Reread map since cpp_get_token can invalidate it with a | |
| 1089 reallocation. */ | |
| 1090 map = LINEMAPS_LAST_ORDINARY_MAP (line_table); | |
| 1091 const line_map_ordinary *from; | |
| 1092 if (MAIN_FILE_P (map) | |
| 1093 || (new_file | |
| 1094 && (from = INCLUDED_FROM (pfile->line_table, map)) != NULL | |
| 1095 && filename_cmp (ORDINARY_MAP_FILE_NAME (from), new_file) != 0)) | |
| 1096 { | |
| 1097 cpp_warning (pfile, CPP_W_NONE, | |
| 1098 "file \"%s\" linemarker ignored due to " | |
| 1099 "incorrect nesting", new_file); | |
| 1100 return; | |
| 1101 } | |
| 1102 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1103 /* Compensate for the increment in linemap_add that occurs in |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1104 _cpp_do_file_change. We're currently at the start of the line |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1105 *following* the #line directive. A separate source_location for this |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1106 location makes no sense (until we do the LC_LEAVE), and |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1107 complicates LAST_SOURCE_LINE_LOCATION. */ |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1108 pfile->line_table->highest_location--; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1109 |
| 0 | 1110 _cpp_do_file_change (pfile, reason, new_file, new_lineno, new_sysp); |
| 111 | 1111 line_table->seen_line_directive = true; |
| 0 | 1112 } |
| 1113 | |
| 1114 /* Arrange the file_change callback. pfile->line has changed to | |
| 1115 FILE_LINE of TO_FILE, for reason REASON. SYSP is 1 for a system | |
| 1116 header, 2 for a system header that needs to be extern "C" protected, | |
| 1117 and zero otherwise. */ | |
| 1118 void | |
| 1119 _cpp_do_file_change (cpp_reader *pfile, enum lc_reason reason, | |
| 1120 const char *to_file, linenum_type file_line, | |
| 1121 unsigned int sysp) | |
| 1122 { | |
| 111 | 1123 linemap_assert (reason != LC_ENTER_MACRO); |
| 0 | 1124 const struct line_map *map = linemap_add (pfile->line_table, reason, sysp, |
| 1125 to_file, file_line); | |
| 111 | 1126 const line_map_ordinary *ord_map = NULL; |
| 0 | 1127 if (map != NULL) |
| 111 | 1128 { |
| 1129 ord_map = linemap_check_ordinary (map); | |
| 1130 linemap_line_start (pfile->line_table, | |
| 1131 ORDINARY_MAP_STARTING_LINE_NUMBER (ord_map), | |
| 1132 127); | |
| 1133 } | |
| 0 | 1134 |
| 1135 if (pfile->cb.file_change) | |
| 111 | 1136 pfile->cb.file_change (pfile, ord_map); |
| 0 | 1137 } |
| 1138 | |
| 1139 /* Report a warning or error detected by the program we are | |
| 1140 processing. Use the directive's tokens in the error message. */ | |
| 1141 static void | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1142 do_diagnostic (cpp_reader *pfile, int code, int reason, int print_dir) |
| 0 | 1143 { |
| 1144 const unsigned char *dir_name; | |
| 1145 unsigned char *line; | |
| 1146 source_location src_loc = pfile->cur_token[-1].src_loc; | |
| 1147 | |
| 1148 if (print_dir) | |
| 1149 dir_name = pfile->directive->name; | |
| 1150 else | |
| 1151 dir_name = NULL; | |
| 1152 pfile->state.prevent_expansion++; | |
| 1153 line = cpp_output_line_to_string (pfile, dir_name); | |
| 1154 pfile->state.prevent_expansion--; | |
| 1155 | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1156 if (code == CPP_DL_WARNING_SYSHDR && reason) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1157 cpp_warning_with_line_syshdr (pfile, reason, src_loc, 0, "%s", line); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1158 else if (code == CPP_DL_WARNING && reason) |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1159 cpp_warning_with_line (pfile, reason, src_loc, 0, "%s", line); |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1160 else |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1161 cpp_error_with_line (pfile, code, src_loc, 0, "%s", line); |
| 0 | 1162 free (line); |
| 1163 } | |
| 1164 | |
| 1165 static void | |
| 1166 do_error (cpp_reader *pfile) | |
| 1167 { | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1168 do_diagnostic (pfile, CPP_DL_ERROR, 0, 1); |
| 0 | 1169 } |
| 1170 | |
| 1171 static void | |
| 1172 do_warning (cpp_reader *pfile) | |
| 1173 { | |
| 1174 /* We want #warning diagnostics to be emitted in system headers too. */ | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1175 do_diagnostic (pfile, CPP_DL_WARNING_SYSHDR, CPP_W_WARNING_DIRECTIVE, 1); |
| 0 | 1176 } |
| 1177 | |
| 1178 /* Report program identification. */ | |
| 1179 static void | |
| 1180 do_ident (cpp_reader *pfile) | |
| 1181 { | |
| 1182 const cpp_token *str = cpp_get_token (pfile); | |
| 1183 | |
| 1184 if (str->type != CPP_STRING) | |
| 1185 cpp_error (pfile, CPP_DL_ERROR, "invalid #%s directive", | |
| 1186 pfile->directive->name); | |
| 1187 else if (pfile->cb.ident) | |
| 1188 pfile->cb.ident (pfile, pfile->directive_line, &str->val.str); | |
| 1189 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1190 check_eol (pfile, false); |
| 0 | 1191 } |
| 1192 | |
| 1193 /* Lookup a PRAGMA name in a singly-linked CHAIN. Returns the | |
| 1194 matching entry, or NULL if none is found. The returned entry could | |
| 1195 be the start of a namespace chain, or a pragma. */ | |
| 1196 static struct pragma_entry * | |
| 1197 lookup_pragma_entry (struct pragma_entry *chain, const cpp_hashnode *pragma) | |
| 1198 { | |
| 1199 while (chain && chain->pragma != pragma) | |
| 1200 chain = chain->next; | |
| 1201 | |
| 1202 return chain; | |
| 1203 } | |
| 1204 | |
| 1205 /* Create and insert a blank pragma entry at the beginning of a | |
| 1206 singly-linked CHAIN. */ | |
| 1207 static struct pragma_entry * | |
| 1208 new_pragma_entry (cpp_reader *pfile, struct pragma_entry **chain) | |
| 1209 { | |
| 1210 struct pragma_entry *new_entry; | |
| 1211 | |
| 1212 new_entry = (struct pragma_entry *) | |
| 1213 _cpp_aligned_alloc (pfile, sizeof (struct pragma_entry)); | |
| 1214 | |
| 1215 memset (new_entry, 0, sizeof (struct pragma_entry)); | |
| 1216 new_entry->next = *chain; | |
| 1217 | |
| 1218 *chain = new_entry; | |
| 1219 return new_entry; | |
| 1220 } | |
| 1221 | |
| 1222 /* Register a pragma NAME in namespace SPACE. If SPACE is null, it | |
| 1223 goes in the global namespace. */ | |
| 1224 static struct pragma_entry * | |
| 1225 register_pragma_1 (cpp_reader *pfile, const char *space, const char *name, | |
| 1226 bool allow_name_expansion) | |
| 1227 { | |
| 1228 struct pragma_entry **chain = &pfile->pragmas; | |
| 1229 struct pragma_entry *entry; | |
| 1230 const cpp_hashnode *node; | |
| 1231 | |
| 1232 if (space) | |
| 1233 { | |
| 1234 node = cpp_lookup (pfile, UC space, strlen (space)); | |
| 1235 entry = lookup_pragma_entry (*chain, node); | |
| 1236 if (!entry) | |
| 1237 { | |
| 1238 entry = new_pragma_entry (pfile, chain); | |
| 1239 entry->pragma = node; | |
| 1240 entry->is_nspace = true; | |
| 1241 entry->allow_expansion = allow_name_expansion; | |
| 1242 } | |
| 1243 else if (!entry->is_nspace) | |
| 1244 goto clash; | |
| 1245 else if (entry->allow_expansion != allow_name_expansion) | |
| 1246 { | |
| 1247 cpp_error (pfile, CPP_DL_ICE, | |
| 1248 "registering pragmas in namespace \"%s\" with mismatched " | |
| 1249 "name expansion", space); | |
| 1250 return NULL; | |
| 1251 } | |
| 1252 chain = &entry->u.space; | |
| 1253 } | |
| 1254 else if (allow_name_expansion) | |
| 1255 { | |
| 1256 cpp_error (pfile, CPP_DL_ICE, | |
| 1257 "registering pragma \"%s\" with name expansion " | |
| 1258 "and no namespace", name); | |
| 1259 return NULL; | |
| 1260 } | |
| 1261 | |
| 1262 /* Check for duplicates. */ | |
| 1263 node = cpp_lookup (pfile, UC name, strlen (name)); | |
| 1264 entry = lookup_pragma_entry (*chain, node); | |
| 1265 if (entry == NULL) | |
| 1266 { | |
| 1267 entry = new_pragma_entry (pfile, chain); | |
| 1268 entry->pragma = node; | |
| 1269 return entry; | |
| 1270 } | |
| 1271 | |
| 1272 if (entry->is_nspace) | |
| 1273 clash: | |
| 1274 cpp_error (pfile, CPP_DL_ICE, | |
| 1275 "registering \"%s\" as both a pragma and a pragma namespace", | |
| 1276 NODE_NAME (node)); | |
| 1277 else if (space) | |
| 1278 cpp_error (pfile, CPP_DL_ICE, "#pragma %s %s is already registered", | |
| 1279 space, name); | |
| 1280 else | |
| 1281 cpp_error (pfile, CPP_DL_ICE, "#pragma %s is already registered", name); | |
| 1282 | |
| 1283 return NULL; | |
| 1284 } | |
| 1285 | |
| 1286 /* Register a cpplib internal pragma SPACE NAME with HANDLER. */ | |
| 1287 static void | |
| 1288 register_pragma_internal (cpp_reader *pfile, const char *space, | |
| 1289 const char *name, pragma_cb handler) | |
| 1290 { | |
| 1291 struct pragma_entry *entry; | |
| 1292 | |
| 1293 entry = register_pragma_1 (pfile, space, name, false); | |
| 1294 entry->is_internal = true; | |
| 1295 entry->u.handler = handler; | |
| 1296 } | |
| 1297 | |
| 1298 /* Register a pragma NAME in namespace SPACE. If SPACE is null, it | |
| 1299 goes in the global namespace. HANDLER is the handler it will call, | |
| 1300 which must be non-NULL. If ALLOW_EXPANSION is set, allow macro | |
| 1301 expansion while parsing pragma NAME. This function is exported | |
| 1302 from libcpp. */ | |
| 1303 void | |
| 1304 cpp_register_pragma (cpp_reader *pfile, const char *space, const char *name, | |
| 1305 pragma_cb handler, bool allow_expansion) | |
| 1306 { | |
| 1307 struct pragma_entry *entry; | |
| 1308 | |
| 1309 if (!handler) | |
| 1310 { | |
| 1311 cpp_error (pfile, CPP_DL_ICE, "registering pragma with NULL handler"); | |
| 1312 return; | |
| 1313 } | |
| 1314 | |
| 1315 entry = register_pragma_1 (pfile, space, name, false); | |
| 1316 if (entry) | |
| 1317 { | |
| 1318 entry->allow_expansion = allow_expansion; | |
| 1319 entry->u.handler = handler; | |
| 1320 } | |
| 1321 } | |
| 1322 | |
| 1323 /* Similarly, but create mark the pragma for deferred processing. | |
| 1324 When found, a CPP_PRAGMA token will be insertted into the stream | |
| 1325 with IDENT in the token->u.pragma slot. */ | |
| 1326 void | |
| 1327 cpp_register_deferred_pragma (cpp_reader *pfile, const char *space, | |
| 1328 const char *name, unsigned int ident, | |
| 1329 bool allow_expansion, bool allow_name_expansion) | |
| 1330 { | |
| 1331 struct pragma_entry *entry; | |
| 1332 | |
| 1333 entry = register_pragma_1 (pfile, space, name, allow_name_expansion); | |
| 1334 if (entry) | |
| 1335 { | |
| 1336 entry->is_deferred = true; | |
| 1337 entry->allow_expansion = allow_expansion; | |
| 1338 entry->u.ident = ident; | |
| 1339 } | |
| 1340 } | |
| 1341 | |
| 1342 /* Register the pragmas the preprocessor itself handles. */ | |
| 1343 void | |
| 1344 _cpp_init_internal_pragmas (cpp_reader *pfile) | |
| 1345 { | |
| 1346 /* Pragmas in the global namespace. */ | |
| 1347 register_pragma_internal (pfile, 0, "once", do_pragma_once); | |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1348 register_pragma_internal (pfile, 0, "push_macro", do_pragma_push_macro); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1349 register_pragma_internal (pfile, 0, "pop_macro", do_pragma_pop_macro); |
| 0 | 1350 |
| 1351 /* New GCC-specific pragmas should be put in the GCC namespace. */ | |
| 1352 register_pragma_internal (pfile, "GCC", "poison", do_pragma_poison); | |
| 1353 register_pragma_internal (pfile, "GCC", "system_header", | |
| 1354 do_pragma_system_header); | |
| 1355 register_pragma_internal (pfile, "GCC", "dependency", do_pragma_dependency); | |
| 111 | 1356 register_pragma_internal (pfile, "GCC", "warning", do_pragma_warning); |
| 1357 register_pragma_internal (pfile, "GCC", "error", do_pragma_error); | |
| 0 | 1358 } |
| 1359 | |
| 1360 /* Return the number of registered pragmas in PE. */ | |
| 1361 | |
| 1362 static int | |
| 1363 count_registered_pragmas (struct pragma_entry *pe) | |
| 1364 { | |
| 1365 int ct = 0; | |
| 1366 for (; pe != NULL; pe = pe->next) | |
| 1367 { | |
| 1368 if (pe->is_nspace) | |
| 1369 ct += count_registered_pragmas (pe->u.space); | |
| 1370 ct++; | |
| 1371 } | |
| 1372 return ct; | |
| 1373 } | |
| 1374 | |
| 1375 /* Save into SD the names of the registered pragmas referenced by PE, | |
| 1376 and return a pointer to the next free space in SD. */ | |
| 1377 | |
| 1378 static char ** | |
| 1379 save_registered_pragmas (struct pragma_entry *pe, char **sd) | |
| 1380 { | |
| 1381 for (; pe != NULL; pe = pe->next) | |
| 1382 { | |
| 1383 if (pe->is_nspace) | |
| 1384 sd = save_registered_pragmas (pe->u.space, sd); | |
| 1385 *sd++ = (char *) xmemdup (HT_STR (&pe->pragma->ident), | |
| 1386 HT_LEN (&pe->pragma->ident), | |
| 1387 HT_LEN (&pe->pragma->ident) + 1); | |
| 1388 } | |
| 1389 return sd; | |
| 1390 } | |
| 1391 | |
| 1392 /* Return a newly-allocated array which saves the names of the | |
| 1393 registered pragmas. */ | |
| 1394 | |
| 1395 char ** | |
| 1396 _cpp_save_pragma_names (cpp_reader *pfile) | |
| 1397 { | |
| 1398 int ct = count_registered_pragmas (pfile->pragmas); | |
| 1399 char **result = XNEWVEC (char *, ct); | |
| 1400 (void) save_registered_pragmas (pfile->pragmas, result); | |
| 1401 return result; | |
| 1402 } | |
| 1403 | |
| 1404 /* Restore from SD the names of the registered pragmas referenced by PE, | |
| 1405 and return a pointer to the next unused name in SD. */ | |
| 1406 | |
| 1407 static char ** | |
| 1408 restore_registered_pragmas (cpp_reader *pfile, struct pragma_entry *pe, | |
| 1409 char **sd) | |
| 1410 { | |
| 1411 for (; pe != NULL; pe = pe->next) | |
| 1412 { | |
| 1413 if (pe->is_nspace) | |
| 1414 sd = restore_registered_pragmas (pfile, pe->u.space, sd); | |
| 1415 pe->pragma = cpp_lookup (pfile, UC *sd, strlen (*sd)); | |
| 1416 free (*sd); | |
| 1417 sd++; | |
| 1418 } | |
| 1419 return sd; | |
| 1420 } | |
| 1421 | |
| 1422 /* Restore the names of the registered pragmas from SAVED. */ | |
| 1423 | |
| 1424 void | |
| 1425 _cpp_restore_pragma_names (cpp_reader *pfile, char **saved) | |
| 1426 { | |
| 1427 (void) restore_registered_pragmas (pfile, pfile->pragmas, saved); | |
| 1428 free (saved); | |
| 1429 } | |
| 1430 | |
| 1431 /* Pragmata handling. We handle some, and pass the rest on to the | |
| 1432 front end. C99 defines three pragmas and says that no macro | |
| 1433 expansion is to be performed on them; whether or not macro | |
| 1434 expansion happens for other pragmas is implementation defined. | |
| 1435 This implementation allows for a mix of both, since GCC did not | |
| 1436 traditionally macro expand its (few) pragmas, whereas OpenMP | |
| 1437 specifies that macro expansion should happen. */ | |
| 1438 static void | |
| 1439 do_pragma (cpp_reader *pfile) | |
| 1440 { | |
| 1441 const struct pragma_entry *p = NULL; | |
| 111 | 1442 const cpp_token *token, *pragma_token; |
| 1443 source_location pragma_token_virt_loc = 0; | |
| 0 | 1444 cpp_token ns_token; |
| 1445 unsigned int count = 1; | |
| 1446 | |
| 1447 pfile->state.prevent_expansion++; | |
| 1448 | |
| 111 | 1449 pragma_token = token = cpp_get_token_with_location (pfile, |
| 1450 &pragma_token_virt_loc); | |
| 0 | 1451 ns_token = *token; |
| 1452 if (token->type == CPP_NAME) | |
| 1453 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1454 p = lookup_pragma_entry (pfile->pragmas, token->val.node.node); |
| 0 | 1455 if (p && p->is_nspace) |
| 1456 { | |
| 1457 bool allow_name_expansion = p->allow_expansion; | |
| 1458 if (allow_name_expansion) | |
| 1459 pfile->state.prevent_expansion--; | |
| 111 | 1460 |
| 0 | 1461 token = cpp_get_token (pfile); |
| 1462 if (token->type == CPP_NAME) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1463 p = lookup_pragma_entry (p->u.space, token->val.node.node); |
| 0 | 1464 else |
| 1465 p = NULL; | |
| 1466 if (allow_name_expansion) | |
| 1467 pfile->state.prevent_expansion++; | |
| 1468 count = 2; | |
| 1469 } | |
| 1470 } | |
| 1471 | |
| 1472 if (p) | |
| 1473 { | |
| 1474 if (p->is_deferred) | |
| 1475 { | |
| 111 | 1476 pfile->directive_result.src_loc = pragma_token_virt_loc; |
| 0 | 1477 pfile->directive_result.type = CPP_PRAGMA; |
| 1478 pfile->directive_result.flags = pragma_token->flags; | |
| 1479 pfile->directive_result.val.pragma = p->u.ident; | |
| 1480 pfile->state.in_deferred_pragma = true; | |
| 1481 pfile->state.pragma_allow_expansion = p->allow_expansion; | |
| 1482 if (!p->allow_expansion) | |
| 1483 pfile->state.prevent_expansion++; | |
| 1484 } | |
| 1485 else | |
| 1486 { | |
| 1487 /* Since the handler below doesn't get the line number, that | |
| 1488 it might need for diagnostics, make sure it has the right | |
| 1489 numbers in place. */ | |
| 1490 if (pfile->cb.line_change) | |
| 1491 (*pfile->cb.line_change) (pfile, pragma_token, false); | |
| 1492 if (p->allow_expansion) | |
| 1493 pfile->state.prevent_expansion--; | |
| 1494 (*p->u.handler) (pfile); | |
| 1495 if (p->allow_expansion) | |
| 1496 pfile->state.prevent_expansion++; | |
| 1497 } | |
| 1498 } | |
| 1499 else if (pfile->cb.def_pragma) | |
| 1500 { | |
| 1501 if (count == 1 || pfile->context->prev == NULL) | |
| 1502 _cpp_backup_tokens (pfile, count); | |
| 1503 else | |
| 1504 { | |
| 1505 /* Invalid name comes from macro expansion, _cpp_backup_tokens | |
| 1506 won't allow backing 2 tokens. */ | |
| 1507 /* ??? The token buffer is leaked. Perhaps if def_pragma hook | |
| 1508 reads both tokens, we could perhaps free it, but if it doesn't, | |
| 1509 we don't know the exact lifespan. */ | |
| 1510 cpp_token *toks = XNEWVEC (cpp_token, 2); | |
| 1511 toks[0] = ns_token; | |
| 1512 toks[0].flags |= NO_EXPAND; | |
| 1513 toks[1] = *token; | |
| 1514 toks[1].flags |= NO_EXPAND; | |
| 1515 _cpp_push_token_context (pfile, NULL, toks, 2); | |
| 1516 } | |
| 1517 pfile->cb.def_pragma (pfile, pfile->directive_line); | |
| 1518 } | |
| 1519 | |
| 1520 pfile->state.prevent_expansion--; | |
| 1521 } | |
| 1522 | |
| 1523 /* Handle #pragma once. */ | |
| 1524 static void | |
| 1525 do_pragma_once (cpp_reader *pfile) | |
| 1526 { | |
| 1527 if (cpp_in_primary_file (pfile)) | |
| 1528 cpp_error (pfile, CPP_DL_WARNING, "#pragma once in main file"); | |
| 1529 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1530 check_eol (pfile, false); |
| 0 | 1531 _cpp_mark_file_once_only (pfile, pfile->buffer->file); |
| 1532 } | |
| 1533 | |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1534 /* Handle #pragma push_macro(STRING). */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1535 static void |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1536 do_pragma_push_macro (cpp_reader *pfile) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1537 { |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1538 cpp_hashnode *node; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1539 size_t defnlen; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1540 const uchar *defn = NULL; |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1541 char *macroname, *dest; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1542 const char *limit, *src; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1543 const cpp_token *txt; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1544 struct def_pragma_macro *c; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1545 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1546 txt = get__Pragma_string (pfile); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1547 if (!txt) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1548 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1549 source_location src_loc = pfile->cur_token[-1].src_loc; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1550 cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0, |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1551 "invalid #pragma push_macro directive"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1552 check_eol (pfile, false); |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1553 skip_rest_of_line (pfile); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1554 return; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1555 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1556 dest = macroname = (char *) alloca (txt->val.str.len + 2); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1557 src = (const char *) (txt->val.str.text + 1 + (txt->val.str.text[0] == 'L')); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1558 limit = (const char *) (txt->val.str.text + txt->val.str.len - 1); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1559 while (src < limit) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1560 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1561 /* We know there is a character following the backslash. */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1562 if (*src == '\\' && (src[1] == '\\' || src[1] == '"')) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1563 src++; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1564 *dest++ = *src++; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1565 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1566 *dest = 0; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1567 check_eol (pfile, false); |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1568 skip_rest_of_line (pfile); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1569 c = XNEW (struct def_pragma_macro); |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1570 memset (c, 0, sizeof (struct def_pragma_macro)); |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1571 c->name = XNEWVAR (char, strlen (macroname) + 1); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1572 strcpy (c->name, macroname); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1573 c->next = pfile->pushed_macros; |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1574 node = _cpp_lex_identifier (pfile, c->name); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1575 if (node->type == NT_VOID) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1576 c->is_undef = 1; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1577 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1578 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1579 defn = cpp_macro_definition (pfile, node); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1580 defnlen = ustrlen (defn); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1581 c->definition = XNEWVEC (uchar, defnlen + 2); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1582 c->definition[defnlen] = '\n'; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1583 c->definition[defnlen + 1] = 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1584 c->line = node->value.macro->line; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1585 c->syshdr = node->value.macro->syshdr; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1586 c->used = node->value.macro->used; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1587 memcpy (c->definition, defn, defnlen); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1588 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1589 |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1590 pfile->pushed_macros = c; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1591 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1592 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1593 /* Handle #pragma pop_macro(STRING). */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1594 static void |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1595 do_pragma_pop_macro (cpp_reader *pfile) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1596 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1597 char *macroname, *dest; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1598 const char *limit, *src; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1599 const cpp_token *txt; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1600 struct def_pragma_macro *l = NULL, *c = pfile->pushed_macros; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1601 txt = get__Pragma_string (pfile); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1602 if (!txt) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1603 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1604 source_location src_loc = pfile->cur_token[-1].src_loc; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1605 cpp_error_with_line (pfile, CPP_DL_ERROR, src_loc, 0, |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1606 "invalid #pragma pop_macro directive"); |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1607 check_eol (pfile, false); |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1608 skip_rest_of_line (pfile); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1609 return; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1610 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1611 dest = macroname = (char *) alloca (txt->val.str.len + 2); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1612 src = (const char *) (txt->val.str.text + 1 + (txt->val.str.text[0] == 'L')); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1613 limit = (const char *) (txt->val.str.text + txt->val.str.len - 1); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1614 while (src < limit) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1615 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1616 /* We know there is a character following the backslash. */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1617 if (*src == '\\' && (src[1] == '\\' || src[1] == '"')) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1618 src++; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1619 *dest++ = *src++; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1620 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1621 *dest = 0; |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1622 check_eol (pfile, false); |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1623 skip_rest_of_line (pfile); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1624 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1625 while (c != NULL) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1626 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1627 if (!strcmp (c->name, macroname)) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1628 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1629 if (!l) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1630 pfile->pushed_macros = c->next; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1631 else |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1632 l->next = c->next; |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1633 cpp_pop_definition (pfile, c); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1634 free (c->definition); |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1635 free (c->name); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1636 free (c); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1637 break; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1638 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1639 l = c; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1640 c = c->next; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1641 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1642 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
1643 |
| 0 | 1644 /* Handle #pragma GCC poison, to poison one or more identifiers so |
| 1645 that the lexer produces a hard error for each subsequent usage. */ | |
| 1646 static void | |
| 1647 do_pragma_poison (cpp_reader *pfile) | |
| 1648 { | |
| 1649 const cpp_token *tok; | |
| 1650 cpp_hashnode *hp; | |
| 1651 | |
| 1652 pfile->state.poisoned_ok = 1; | |
| 1653 for (;;) | |
| 1654 { | |
| 1655 tok = _cpp_lex_token (pfile); | |
| 1656 if (tok->type == CPP_EOF) | |
| 1657 break; | |
| 1658 if (tok->type != CPP_NAME) | |
| 1659 { | |
| 1660 cpp_error (pfile, CPP_DL_ERROR, | |
| 1661 "invalid #pragma GCC poison directive"); | |
| 1662 break; | |
| 1663 } | |
| 1664 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1665 hp = tok->val.node.node; |
| 0 | 1666 if (hp->flags & NODE_POISONED) |
| 1667 continue; | |
| 1668 | |
| 1669 if (hp->type == NT_MACRO) | |
| 1670 cpp_error (pfile, CPP_DL_WARNING, "poisoning existing macro \"%s\"", | |
| 1671 NODE_NAME (hp)); | |
| 1672 _cpp_free_definition (hp); | |
| 1673 hp->flags |= NODE_POISONED | NODE_DIAGNOSTIC; | |
| 1674 } | |
| 1675 pfile->state.poisoned_ok = 0; | |
| 1676 } | |
| 1677 | |
| 1678 /* Mark the current header as a system header. This will suppress | |
| 1679 some categories of warnings (notably those from -pedantic). It is | |
| 1680 intended for use in system libraries that cannot be implemented in | |
| 1681 conforming C, but cannot be certain that their headers appear in a | |
| 1682 system include directory. To prevent abuse, it is rejected in the | |
| 1683 primary source file. */ | |
| 1684 static void | |
| 1685 do_pragma_system_header (cpp_reader *pfile) | |
| 1686 { | |
| 1687 if (cpp_in_primary_file (pfile)) | |
| 1688 cpp_error (pfile, CPP_DL_WARNING, | |
| 1689 "#pragma system_header ignored outside include file"); | |
| 1690 else | |
| 1691 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1692 check_eol (pfile, false); |
| 0 | 1693 skip_rest_of_line (pfile); |
| 1694 cpp_make_system_header (pfile, 1, 0); | |
| 1695 } | |
| 1696 } | |
| 1697 | |
| 1698 /* Check the modified date of the current include file against a specified | |
| 1699 file. Issue a diagnostic, if the specified file is newer. We use this to | |
| 1700 determine if a fixed header should be refixed. */ | |
| 1701 static void | |
| 1702 do_pragma_dependency (cpp_reader *pfile) | |
| 1703 { | |
| 1704 const char *fname; | |
| 1705 int angle_brackets, ordering; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1706 source_location location; |
| 0 | 1707 |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1708 fname = parse_include (pfile, &angle_brackets, NULL, &location); |
| 0 | 1709 if (!fname) |
| 1710 return; | |
| 1711 | |
| 1712 ordering = _cpp_compare_file_date (pfile, fname, angle_brackets); | |
| 1713 if (ordering < 0) | |
| 1714 cpp_error (pfile, CPP_DL_WARNING, "cannot find source file %s", fname); | |
| 1715 else if (ordering > 0) | |
| 1716 { | |
| 1717 cpp_error (pfile, CPP_DL_WARNING, | |
| 1718 "current file is older than %s", fname); | |
| 1719 if (cpp_get_token (pfile)->type != CPP_EOF) | |
| 1720 { | |
| 1721 _cpp_backup_tokens (pfile, 1); | |
|
63
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
1722 do_diagnostic (pfile, CPP_DL_WARNING, 0, 0); |
| 0 | 1723 } |
| 1724 } | |
| 1725 | |
| 1726 free ((void *) fname); | |
| 1727 } | |
| 1728 | |
| 111 | 1729 /* Issue a diagnostic with the message taken from the pragma. If |
| 1730 ERROR is true, the diagnostic is a warning, otherwise, it is an | |
| 1731 error. */ | |
| 1732 static void | |
| 1733 do_pragma_warning_or_error (cpp_reader *pfile, bool error) | |
| 1734 { | |
| 1735 const cpp_token *tok = _cpp_lex_token (pfile); | |
| 1736 cpp_string str; | |
| 1737 if (tok->type != CPP_STRING | |
| 1738 || !cpp_interpret_string_notranslate (pfile, &tok->val.str, 1, &str, | |
| 1739 CPP_STRING) | |
| 1740 || str.len == 0) | |
| 1741 { | |
| 1742 cpp_error (pfile, CPP_DL_ERROR, "invalid \"#pragma GCC %s\" directive", | |
| 1743 error ? "error" : "warning"); | |
| 1744 return; | |
| 1745 } | |
| 1746 cpp_error (pfile, error ? CPP_DL_ERROR : CPP_DL_WARNING, | |
| 1747 "%s", str.text); | |
| 1748 free ((void *)str.text); | |
| 1749 } | |
| 1750 | |
| 1751 /* Issue a warning diagnostic. */ | |
| 1752 static void | |
| 1753 do_pragma_warning (cpp_reader *pfile) | |
| 1754 { | |
| 1755 do_pragma_warning_or_error (pfile, false); | |
| 1756 } | |
| 1757 | |
| 1758 /* Issue an error diagnostic. */ | |
| 1759 static void | |
| 1760 do_pragma_error (cpp_reader *pfile) | |
| 1761 { | |
| 1762 do_pragma_warning_or_error (pfile, true); | |
| 1763 } | |
| 1764 | |
| 0 | 1765 /* Get a token but skip padding. */ |
| 1766 static const cpp_token * | |
| 1767 get_token_no_padding (cpp_reader *pfile) | |
| 1768 { | |
| 1769 for (;;) | |
| 1770 { | |
| 1771 const cpp_token *result = cpp_get_token (pfile); | |
| 1772 if (result->type != CPP_PADDING) | |
| 1773 return result; | |
| 1774 } | |
| 1775 } | |
| 1776 | |
| 1777 /* Check syntax is "(string-literal)". Returns the string on success, | |
| 1778 or NULL on failure. */ | |
| 1779 static const cpp_token * | |
| 1780 get__Pragma_string (cpp_reader *pfile) | |
| 1781 { | |
| 1782 const cpp_token *string; | |
| 1783 const cpp_token *paren; | |
| 1784 | |
| 1785 paren = get_token_no_padding (pfile); | |
| 1786 if (paren->type == CPP_EOF) | |
| 1787 _cpp_backup_tokens (pfile, 1); | |
| 1788 if (paren->type != CPP_OPEN_PAREN) | |
| 1789 return NULL; | |
| 1790 | |
| 1791 string = get_token_no_padding (pfile); | |
| 1792 if (string->type == CPP_EOF) | |
| 1793 _cpp_backup_tokens (pfile, 1); | |
| 1794 if (string->type != CPP_STRING && string->type != CPP_WSTRING | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1795 && string->type != CPP_STRING32 && string->type != CPP_STRING16 |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1796 && string->type != CPP_UTF8STRING) |
| 0 | 1797 return NULL; |
| 1798 | |
| 1799 paren = get_token_no_padding (pfile); | |
| 1800 if (paren->type == CPP_EOF) | |
| 1801 _cpp_backup_tokens (pfile, 1); | |
| 1802 if (paren->type != CPP_CLOSE_PAREN) | |
| 1803 return NULL; | |
| 1804 | |
| 1805 return string; | |
| 1806 } | |
| 1807 | |
| 1808 /* Destringize IN into a temporary buffer, by removing the first \ of | |
| 1809 \" and \\ sequences, and process the result as a #pragma directive. */ | |
| 1810 static void | |
| 111 | 1811 destringize_and_run (cpp_reader *pfile, const cpp_string *in, |
| 1812 source_location expansion_loc) | |
| 0 | 1813 { |
| 1814 const unsigned char *src, *limit; | |
| 1815 char *dest, *result; | |
| 1816 cpp_context *saved_context; | |
| 1817 cpp_token *saved_cur_token; | |
| 1818 tokenrun *saved_cur_run; | |
| 1819 cpp_token *toks; | |
| 1820 int count; | |
| 1821 const struct directive *save_directive; | |
| 1822 | |
| 1823 dest = result = (char *) alloca (in->len - 1); | |
| 1824 src = in->text + 1 + (in->text[0] == 'L'); | |
| 1825 limit = in->text + in->len - 1; | |
| 1826 while (src < limit) | |
| 1827 { | |
| 1828 /* We know there is a character following the backslash. */ | |
| 1829 if (*src == '\\' && (src[1] == '\\' || src[1] == '"')) | |
| 1830 src++; | |
| 1831 *dest++ = *src++; | |
| 1832 } | |
| 1833 *dest = '\n'; | |
| 1834 | |
| 1835 /* Ugh; an awful kludge. We are really not set up to be lexing | |
| 1836 tokens when in the middle of a macro expansion. Use a new | |
| 1837 context to force cpp_get_token to lex, and so skip_rest_of_line | |
| 1838 doesn't go beyond the end of the text. Also, remember the | |
| 1839 current lexing position so we can return to it later. | |
| 1840 | |
| 1841 Something like line-at-a-time lexing should remove the need for | |
| 1842 this. */ | |
| 1843 saved_context = pfile->context; | |
| 1844 saved_cur_token = pfile->cur_token; | |
| 1845 saved_cur_run = pfile->cur_run; | |
| 1846 | |
| 111 | 1847 pfile->context = XCNEW (cpp_context); |
| 0 | 1848 |
| 1849 /* Inline run_directive, since we need to delay the _cpp_pop_buffer | |
| 1850 until we've read all of the tokens that we want. */ | |
| 1851 cpp_push_buffer (pfile, (const uchar *) result, dest - result, | |
| 1852 /* from_stage3 */ true); | |
| 1853 /* ??? Antique Disgusting Hack. What does this do? */ | |
| 1854 if (pfile->buffer->prev) | |
| 1855 pfile->buffer->file = pfile->buffer->prev->file; | |
| 1856 | |
| 1857 start_directive (pfile); | |
| 1858 _cpp_clean_line (pfile); | |
| 1859 save_directive = pfile->directive; | |
| 1860 pfile->directive = &dtable[T_PRAGMA]; | |
| 1861 do_pragma (pfile); | |
| 1862 end_directive (pfile, 1); | |
| 1863 pfile->directive = save_directive; | |
| 1864 | |
| 1865 /* We always insert at least one token, the directive result. It'll | |
| 1866 either be a CPP_PADDING or a CPP_PRAGMA. In the later case, we | |
| 1867 need to insert *all* of the tokens, including the CPP_PRAGMA_EOL. */ | |
| 1868 | |
| 1869 /* If we're not handling the pragma internally, read all of the tokens from | |
| 1870 the string buffer now, while the string buffer is still installed. */ | |
| 1871 /* ??? Note that the token buffer allocated here is leaked. It's not clear | |
| 1872 to me what the true lifespan of the tokens are. It would appear that | |
| 1873 the lifespan is the entire parse of the main input stream, in which case | |
| 1874 this may not be wrong. */ | |
| 1875 if (pfile->directive_result.type == CPP_PRAGMA) | |
| 1876 { | |
| 1877 int maxcount; | |
| 1878 | |
| 1879 count = 1; | |
| 1880 maxcount = 50; | |
| 1881 toks = XNEWVEC (cpp_token, maxcount); | |
| 1882 toks[0] = pfile->directive_result; | |
| 1883 | |
| 1884 do | |
| 1885 { | |
| 1886 if (count == maxcount) | |
| 1887 { | |
| 1888 maxcount = maxcount * 3 / 2; | |
| 1889 toks = XRESIZEVEC (cpp_token, toks, maxcount); | |
| 1890 } | |
| 1891 toks[count] = *cpp_get_token (pfile); | |
| 111 | 1892 /* _Pragma is a builtin, so we're not within a macro-map, and so |
| 1893 the token locations are set to bogus ordinary locations | |
| 1894 near to, but after that of the "_Pragma". | |
| 1895 Paper over this by setting them equal to the location of the | |
| 1896 _Pragma itself (PR preprocessor/69126). */ | |
| 1897 toks[count].src_loc = expansion_loc; | |
| 0 | 1898 /* Macros have been already expanded by cpp_get_token |
| 1899 if the pragma allowed expansion. */ | |
| 1900 toks[count++].flags |= NO_EXPAND; | |
| 1901 } | |
| 1902 while (toks[count-1].type != CPP_PRAGMA_EOL); | |
| 1903 } | |
| 1904 else | |
| 1905 { | |
| 1906 count = 1; | |
| 1907 toks = XNEW (cpp_token); | |
| 1908 toks[0] = pfile->directive_result; | |
| 1909 | |
| 1910 /* If we handled the entire pragma internally, make sure we get the | |
| 1911 line number correct for the next token. */ | |
| 1912 if (pfile->cb.line_change) | |
| 1913 pfile->cb.line_change (pfile, pfile->cur_token, false); | |
| 1914 } | |
| 1915 | |
| 1916 /* Finish inlining run_directive. */ | |
| 1917 pfile->buffer->file = NULL; | |
| 1918 _cpp_pop_buffer (pfile); | |
| 1919 | |
| 1920 /* Reset the old macro state before ... */ | |
| 1921 XDELETE (pfile->context); | |
| 1922 pfile->context = saved_context; | |
| 1923 pfile->cur_token = saved_cur_token; | |
| 1924 pfile->cur_run = saved_cur_run; | |
| 1925 | |
| 1926 /* ... inserting the new tokens we collected. */ | |
| 1927 _cpp_push_token_context (pfile, NULL, toks, count); | |
| 1928 } | |
| 1929 | |
| 1930 /* Handle the _Pragma operator. Return 0 on error, 1 if ok. */ | |
| 1931 int | |
| 111 | 1932 _cpp_do__Pragma (cpp_reader *pfile, source_location expansion_loc) |
| 0 | 1933 { |
| 1934 const cpp_token *string = get__Pragma_string (pfile); | |
| 1935 pfile->directive_result.type = CPP_PADDING; | |
| 1936 | |
| 1937 if (string) | |
| 1938 { | |
| 111 | 1939 destringize_and_run (pfile, &string->val.str, expansion_loc); |
| 0 | 1940 return 1; |
| 1941 } | |
| 1942 cpp_error (pfile, CPP_DL_ERROR, | |
| 1943 "_Pragma takes a parenthesized string literal"); | |
| 1944 return 0; | |
| 1945 } | |
| 1946 | |
| 1947 /* Handle #ifdef. */ | |
| 1948 static void | |
| 1949 do_ifdef (cpp_reader *pfile) | |
| 1950 { | |
| 1951 int skip = 1; | |
| 1952 | |
| 1953 if (! pfile->state.skipping) | |
| 1954 { | |
| 1955 cpp_hashnode *node = lex_macro_node (pfile, false); | |
| 1956 | |
| 1957 if (node) | |
| 1958 { | |
| 111 | 1959 /* Do not treat conditional macros as being defined. This is due to |
| 1960 the powerpc and spu ports using conditional macros for 'vector', | |
| 1961 'bool', and 'pixel' to act as conditional keywords. This messes | |
| 1962 up tests like #ifndef bool. */ | |
| 1963 skip = (node->type != NT_MACRO | |
| 1964 || ((node->flags & NODE_CONDITIONAL) != 0)); | |
| 0 | 1965 _cpp_mark_macro_used (node); |
| 1966 if (!(node->flags & NODE_USED)) | |
| 1967 { | |
| 1968 node->flags |= NODE_USED; | |
| 1969 if (node->type == NT_MACRO) | |
| 1970 { | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1971 if ((node->flags & NODE_BUILTIN) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1972 && pfile->cb.user_builtin_macro) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
1973 pfile->cb.user_builtin_macro (pfile, node); |
| 0 | 1974 if (pfile->cb.used_define) |
| 1975 pfile->cb.used_define (pfile, pfile->directive_line, node); | |
| 1976 } | |
| 1977 else | |
| 1978 { | |
| 1979 if (pfile->cb.used_undef) | |
| 1980 pfile->cb.used_undef (pfile, pfile->directive_line, node); | |
| 1981 } | |
| 1982 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1983 if (pfile->cb.used) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1984 pfile->cb.used (pfile, pfile->directive_line, node); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
1985 check_eol (pfile, false); |
| 0 | 1986 } |
| 1987 } | |
| 1988 | |
| 1989 push_conditional (pfile, skip, T_IFDEF, 0); | |
| 1990 } | |
| 1991 | |
| 1992 /* Handle #ifndef. */ | |
| 1993 static void | |
| 1994 do_ifndef (cpp_reader *pfile) | |
| 1995 { | |
| 1996 int skip = 1; | |
| 1997 cpp_hashnode *node = 0; | |
| 1998 | |
| 1999 if (! pfile->state.skipping) | |
| 2000 { | |
| 2001 node = lex_macro_node (pfile, false); | |
| 2002 | |
| 2003 if (node) | |
| 2004 { | |
| 111 | 2005 /* Do not treat conditional macros as being defined. This is due to |
| 2006 the powerpc and spu ports using conditional macros for 'vector', | |
| 2007 'bool', and 'pixel' to act as conditional keywords. This messes | |
| 2008 up tests like #ifndef bool. */ | |
| 2009 skip = (node->type == NT_MACRO | |
| 2010 && ((node->flags & NODE_CONDITIONAL) == 0)); | |
| 0 | 2011 _cpp_mark_macro_used (node); |
| 2012 if (!(node->flags & NODE_USED)) | |
| 2013 { | |
| 2014 node->flags |= NODE_USED; | |
| 2015 if (node->type == NT_MACRO) | |
| 2016 { | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2017 if ((node->flags & NODE_BUILTIN) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2018 && pfile->cb.user_builtin_macro) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2019 pfile->cb.user_builtin_macro (pfile, node); |
| 0 | 2020 if (pfile->cb.used_define) |
| 2021 pfile->cb.used_define (pfile, pfile->directive_line, node); | |
| 2022 } | |
| 2023 else | |
| 2024 { | |
| 2025 if (pfile->cb.used_undef) | |
| 2026 pfile->cb.used_undef (pfile, pfile->directive_line, node); | |
| 2027 } | |
| 2028 } | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2029 if (pfile->cb.used) |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2030 pfile->cb.used (pfile, pfile->directive_line, node); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2031 check_eol (pfile, false); |
| 0 | 2032 } |
| 2033 } | |
| 2034 | |
| 2035 push_conditional (pfile, skip, T_IFNDEF, node); | |
| 2036 } | |
| 2037 | |
| 2038 /* _cpp_parse_expr puts a macro in a "#if !defined ()" expression in | |
| 2039 pfile->mi_ind_cmacro so we can handle multiple-include | |
| 2040 optimizations. If macro expansion occurs in the expression, we | |
| 2041 cannot treat it as a controlling conditional, since the expansion | |
| 2042 could change in the future. That is handled by cpp_get_token. */ | |
| 2043 static void | |
| 2044 do_if (cpp_reader *pfile) | |
| 2045 { | |
| 2046 int skip = 1; | |
| 2047 | |
| 2048 if (! pfile->state.skipping) | |
| 2049 skip = _cpp_parse_expr (pfile, true) == false; | |
| 2050 | |
| 2051 push_conditional (pfile, skip, T_IF, pfile->mi_ind_cmacro); | |
| 2052 } | |
| 2053 | |
| 2054 /* Flip skipping state if appropriate and continue without changing | |
| 2055 if_stack; this is so that the error message for missing #endif's | |
| 2056 etc. will point to the original #if. */ | |
| 2057 static void | |
| 2058 do_else (cpp_reader *pfile) | |
| 2059 { | |
| 2060 cpp_buffer *buffer = pfile->buffer; | |
| 2061 struct if_stack *ifs = buffer->if_stack; | |
| 2062 | |
| 2063 if (ifs == NULL) | |
| 2064 cpp_error (pfile, CPP_DL_ERROR, "#else without #if"); | |
| 2065 else | |
| 2066 { | |
| 2067 if (ifs->type == T_ELSE) | |
| 2068 { | |
| 2069 cpp_error (pfile, CPP_DL_ERROR, "#else after #else"); | |
| 2070 cpp_error_with_line (pfile, CPP_DL_ERROR, ifs->line, 0, | |
| 2071 "the conditional began here"); | |
| 2072 } | |
| 2073 ifs->type = T_ELSE; | |
| 2074 | |
| 2075 /* Skip any future (erroneous) #elses or #elifs. */ | |
| 2076 pfile->state.skipping = ifs->skip_elses; | |
| 2077 ifs->skip_elses = true; | |
| 2078 | |
| 2079 /* Invalidate any controlling macro. */ | |
| 2080 ifs->mi_cmacro = 0; | |
| 2081 | |
| 2082 /* Only check EOL if was not originally skipping. */ | |
| 2083 if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels)) | |
| 111 | 2084 check_eol_endif_labels (pfile); |
| 0 | 2085 } |
| 2086 } | |
| 2087 | |
| 2088 /* Handle a #elif directive by not changing if_stack either. See the | |
| 2089 comment above do_else. */ | |
| 2090 static void | |
| 2091 do_elif (cpp_reader *pfile) | |
| 2092 { | |
| 2093 cpp_buffer *buffer = pfile->buffer; | |
| 2094 struct if_stack *ifs = buffer->if_stack; | |
| 2095 | |
| 2096 if (ifs == NULL) | |
| 2097 cpp_error (pfile, CPP_DL_ERROR, "#elif without #if"); | |
| 2098 else | |
| 2099 { | |
| 2100 if (ifs->type == T_ELSE) | |
| 2101 { | |
| 2102 cpp_error (pfile, CPP_DL_ERROR, "#elif after #else"); | |
| 2103 cpp_error_with_line (pfile, CPP_DL_ERROR, ifs->line, 0, | |
| 2104 "the conditional began here"); | |
| 2105 } | |
| 2106 ifs->type = T_ELIF; | |
| 2107 | |
| 111 | 2108 /* See DR#412: "Only the first group whose control condition |
| 2109 evaluates to true (nonzero) is processed; any following groups | |
| 2110 are skipped and their controlling directives are processed as | |
| 2111 if they were in a group that is skipped." */ | |
| 2112 if (ifs->skip_elses) | |
| 2113 pfile->state.skipping = 1; | |
| 2114 else | |
| 0 | 2115 { |
| 111 | 2116 pfile->state.skipping = ! _cpp_parse_expr (pfile, false); |
| 2117 ifs->skip_elses = ! pfile->state.skipping; | |
| 0 | 2118 } |
| 2119 | |
| 2120 /* Invalidate any controlling macro. */ | |
| 2121 ifs->mi_cmacro = 0; | |
| 2122 } | |
| 2123 } | |
| 2124 | |
| 2125 /* #endif pops the if stack and resets pfile->state.skipping. */ | |
| 2126 static void | |
| 2127 do_endif (cpp_reader *pfile) | |
| 2128 { | |
| 2129 cpp_buffer *buffer = pfile->buffer; | |
| 2130 struct if_stack *ifs = buffer->if_stack; | |
| 2131 | |
| 2132 if (ifs == NULL) | |
| 2133 cpp_error (pfile, CPP_DL_ERROR, "#endif without #if"); | |
| 2134 else | |
| 2135 { | |
| 2136 /* Only check EOL if was not originally skipping. */ | |
| 2137 if (!ifs->was_skipping && CPP_OPTION (pfile, warn_endif_labels)) | |
| 111 | 2138 check_eol_endif_labels (pfile); |
| 0 | 2139 |
| 2140 /* If potential control macro, we go back outside again. */ | |
| 2141 if (ifs->next == 0 && ifs->mi_cmacro) | |
| 2142 { | |
| 2143 pfile->mi_valid = true; | |
| 2144 pfile->mi_cmacro = ifs->mi_cmacro; | |
| 2145 } | |
| 2146 | |
| 2147 buffer->if_stack = ifs->next; | |
| 2148 pfile->state.skipping = ifs->was_skipping; | |
| 2149 obstack_free (&pfile->buffer_ob, ifs); | |
| 2150 } | |
| 2151 } | |
| 2152 | |
| 2153 /* Push an if_stack entry for a preprocessor conditional, and set | |
| 2154 pfile->state.skipping to SKIP. If TYPE indicates the conditional | |
| 2155 is #if or #ifndef, CMACRO is a potentially controlling macro, and | |
| 2156 we need to check here that we are at the top of the file. */ | |
| 2157 static void | |
| 2158 push_conditional (cpp_reader *pfile, int skip, int type, | |
| 2159 const cpp_hashnode *cmacro) | |
| 2160 { | |
| 2161 struct if_stack *ifs; | |
| 2162 cpp_buffer *buffer = pfile->buffer; | |
| 2163 | |
| 2164 ifs = XOBNEW (&pfile->buffer_ob, struct if_stack); | |
| 2165 ifs->line = pfile->directive_line; | |
| 2166 ifs->next = buffer->if_stack; | |
| 2167 ifs->skip_elses = pfile->state.skipping || !skip; | |
| 2168 ifs->was_skipping = pfile->state.skipping; | |
| 2169 ifs->type = type; | |
| 2170 /* This condition is effectively a test for top-of-file. */ | |
| 2171 if (pfile->mi_valid && pfile->mi_cmacro == 0) | |
| 2172 ifs->mi_cmacro = cmacro; | |
| 2173 else | |
| 2174 ifs->mi_cmacro = 0; | |
| 2175 | |
| 2176 pfile->state.skipping = skip; | |
| 2177 buffer->if_stack = ifs; | |
| 2178 } | |
| 2179 | |
| 2180 /* Read the tokens of the answer into the macro pool, in a directive | |
| 2181 of type TYPE. Only commit the memory if we intend it as permanent | |
| 2182 storage, i.e. the #assert case. Returns 0 on success, and sets | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2183 ANSWERP to point to the answer. PRED_LOC is the location of the |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2184 predicate. */ |
| 0 | 2185 static int |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2186 parse_answer (cpp_reader *pfile, struct answer **answerp, int type, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2187 source_location pred_loc) |
| 0 | 2188 { |
| 2189 const cpp_token *paren; | |
| 2190 struct answer *answer; | |
| 2191 unsigned int acount; | |
| 2192 | |
| 2193 /* In a conditional, it is legal to not have an open paren. We | |
| 2194 should save the following token in this case. */ | |
| 2195 paren = cpp_get_token (pfile); | |
| 2196 | |
| 2197 /* If not a paren, see if we're OK. */ | |
| 2198 if (paren->type != CPP_OPEN_PAREN) | |
| 2199 { | |
| 2200 /* In a conditional no answer is a test for any answer. It | |
| 2201 could be followed by any token. */ | |
| 2202 if (type == T_IF) | |
| 2203 { | |
| 2204 _cpp_backup_tokens (pfile, 1); | |
| 2205 return 0; | |
| 2206 } | |
| 2207 | |
| 2208 /* #unassert with no answer is valid - it removes all answers. */ | |
| 2209 if (type == T_UNASSERT && paren->type == CPP_EOF) | |
| 2210 return 0; | |
| 2211 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2212 cpp_error_with_line (pfile, CPP_DL_ERROR, pred_loc, 0, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2213 "missing '(' after predicate"); |
| 0 | 2214 return 1; |
| 2215 } | |
| 2216 | |
| 2217 for (acount = 0;; acount++) | |
| 2218 { | |
| 2219 size_t room_needed; | |
| 2220 const cpp_token *token = cpp_get_token (pfile); | |
| 2221 cpp_token *dest; | |
| 2222 | |
| 2223 if (token->type == CPP_CLOSE_PAREN) | |
| 2224 break; | |
| 2225 | |
| 2226 if (token->type == CPP_EOF) | |
| 2227 { | |
| 2228 cpp_error (pfile, CPP_DL_ERROR, "missing ')' to complete answer"); | |
| 2229 return 1; | |
| 2230 } | |
| 2231 | |
| 2232 /* struct answer includes the space for one token. */ | |
| 2233 room_needed = (sizeof (struct answer) + acount * sizeof (cpp_token)); | |
| 2234 | |
| 2235 if (BUFF_ROOM (pfile->a_buff) < room_needed) | |
| 2236 _cpp_extend_buff (pfile, &pfile->a_buff, sizeof (struct answer)); | |
| 2237 | |
| 2238 dest = &((struct answer *) BUFF_FRONT (pfile->a_buff))->first[acount]; | |
| 2239 *dest = *token; | |
| 2240 | |
| 2241 /* Drop whitespace at start, for answer equivalence purposes. */ | |
| 2242 if (acount == 0) | |
| 2243 dest->flags &= ~PREV_WHITE; | |
| 2244 } | |
| 2245 | |
| 2246 if (acount == 0) | |
| 2247 { | |
| 2248 cpp_error (pfile, CPP_DL_ERROR, "predicate's answer is empty"); | |
| 2249 return 1; | |
| 2250 } | |
| 2251 | |
| 2252 answer = (struct answer *) BUFF_FRONT (pfile->a_buff); | |
| 2253 answer->count = acount; | |
| 2254 answer->next = NULL; | |
| 2255 *answerp = answer; | |
| 2256 | |
| 2257 return 0; | |
| 2258 } | |
| 2259 | |
| 2260 /* Parses an assertion directive of type TYPE, returning a pointer to | |
| 2261 the hash node of the predicate, or 0 on error. If an answer was | |
| 2262 supplied, it is placed in ANSWERP, otherwise it is set to 0. */ | |
| 2263 static cpp_hashnode * | |
| 2264 parse_assertion (cpp_reader *pfile, struct answer **answerp, int type) | |
| 2265 { | |
| 2266 cpp_hashnode *result = 0; | |
| 2267 const cpp_token *predicate; | |
| 2268 | |
| 2269 /* We don't expand predicates or answers. */ | |
| 2270 pfile->state.prevent_expansion++; | |
| 2271 | |
| 2272 *answerp = 0; | |
| 2273 predicate = cpp_get_token (pfile); | |
| 2274 if (predicate->type == CPP_EOF) | |
| 2275 cpp_error (pfile, CPP_DL_ERROR, "assertion without predicate"); | |
| 2276 else if (predicate->type != CPP_NAME) | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2277 cpp_error_with_line (pfile, CPP_DL_ERROR, predicate->src_loc, 0, |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2278 "predicate must be an identifier"); |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2279 else if (parse_answer (pfile, answerp, type, predicate->src_loc) == 0) |
| 0 | 2280 { |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2281 unsigned int len = NODE_LEN (predicate->val.node.node); |
| 0 | 2282 unsigned char *sym = (unsigned char *) alloca (len + 1); |
| 2283 | |
| 2284 /* Prefix '#' to get it out of macro namespace. */ | |
| 2285 sym[0] = '#'; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2286 memcpy (sym + 1, NODE_NAME (predicate->val.node.node), len); |
| 0 | 2287 result = cpp_lookup (pfile, sym, len + 1); |
| 2288 } | |
| 2289 | |
| 2290 pfile->state.prevent_expansion--; | |
| 2291 return result; | |
| 2292 } | |
| 2293 | |
| 2294 /* Returns a pointer to the pointer to CANDIDATE in the answer chain, | |
| 2295 or a pointer to NULL if the answer is not in the chain. */ | |
| 2296 static struct answer ** | |
| 2297 find_answer (cpp_hashnode *node, const struct answer *candidate) | |
| 2298 { | |
| 2299 unsigned int i; | |
| 2300 struct answer **result; | |
| 2301 | |
| 2302 for (result = &node->value.answers; *result; result = &(*result)->next) | |
| 2303 { | |
| 2304 struct answer *answer = *result; | |
| 2305 | |
| 2306 if (answer->count == candidate->count) | |
| 2307 { | |
| 2308 for (i = 0; i < answer->count; i++) | |
| 2309 if (! _cpp_equiv_tokens (&answer->first[i], &candidate->first[i])) | |
| 2310 break; | |
| 2311 | |
| 2312 if (i == answer->count) | |
| 2313 break; | |
| 2314 } | |
| 2315 } | |
| 2316 | |
| 2317 return result; | |
| 2318 } | |
| 2319 | |
| 2320 /* Test an assertion within a preprocessor conditional. Returns | |
| 2321 nonzero on failure, zero on success. On success, the result of | |
| 2322 the test is written into VALUE, otherwise the value 0. */ | |
| 2323 int | |
| 2324 _cpp_test_assertion (cpp_reader *pfile, unsigned int *value) | |
| 2325 { | |
| 2326 struct answer *answer; | |
| 2327 cpp_hashnode *node; | |
| 2328 | |
| 2329 node = parse_assertion (pfile, &answer, T_IF); | |
| 2330 | |
| 2331 /* For recovery, an erroneous assertion expression is handled as a | |
| 2332 failing assertion. */ | |
| 2333 *value = 0; | |
| 2334 | |
| 2335 if (node) | |
| 2336 *value = (node->type == NT_ASSERTION && | |
| 2337 (answer == 0 || *find_answer (node, answer) != 0)); | |
| 2338 else if (pfile->cur_token[-1].type == CPP_EOF) | |
| 2339 _cpp_backup_tokens (pfile, 1); | |
| 2340 | |
| 2341 /* We don't commit the memory for the answer - it's temporary only. */ | |
| 2342 return node == 0; | |
| 2343 } | |
| 2344 | |
| 2345 /* Handle #assert. */ | |
| 2346 static void | |
| 2347 do_assert (cpp_reader *pfile) | |
| 2348 { | |
| 2349 struct answer *new_answer; | |
| 2350 cpp_hashnode *node; | |
| 2351 | |
| 2352 node = parse_assertion (pfile, &new_answer, T_ASSERT); | |
| 2353 if (node) | |
| 2354 { | |
| 2355 size_t answer_size; | |
| 2356 | |
| 2357 /* Place the new answer in the answer list. First check there | |
| 2358 is not a duplicate. */ | |
| 2359 new_answer->next = 0; | |
| 2360 if (node->type == NT_ASSERTION) | |
| 2361 { | |
| 2362 if (*find_answer (node, new_answer)) | |
| 2363 { | |
| 2364 cpp_error (pfile, CPP_DL_WARNING, "\"%s\" re-asserted", | |
| 2365 NODE_NAME (node) + 1); | |
| 2366 return; | |
| 2367 } | |
| 2368 new_answer->next = node->value.answers; | |
| 2369 } | |
| 2370 | |
| 2371 answer_size = sizeof (struct answer) + ((new_answer->count - 1) | |
| 2372 * sizeof (cpp_token)); | |
| 2373 /* Commit or allocate storage for the object. */ | |
| 2374 if (pfile->hash_table->alloc_subobject) | |
| 2375 { | |
| 2376 struct answer *temp_answer = new_answer; | |
| 2377 new_answer = (struct answer *) pfile->hash_table->alloc_subobject | |
| 2378 (answer_size); | |
| 2379 memcpy (new_answer, temp_answer, answer_size); | |
| 2380 } | |
| 2381 else | |
| 2382 BUFF_FRONT (pfile->a_buff) += answer_size; | |
| 2383 | |
| 2384 node->type = NT_ASSERTION; | |
| 2385 node->value.answers = new_answer; | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2386 check_eol (pfile, false); |
| 0 | 2387 } |
| 2388 } | |
| 2389 | |
| 2390 /* Handle #unassert. */ | |
| 2391 static void | |
| 2392 do_unassert (cpp_reader *pfile) | |
| 2393 { | |
| 2394 cpp_hashnode *node; | |
| 2395 struct answer *answer; | |
| 2396 | |
| 2397 node = parse_assertion (pfile, &answer, T_UNASSERT); | |
| 2398 /* It isn't an error to #unassert something that isn't asserted. */ | |
| 2399 if (node && node->type == NT_ASSERTION) | |
| 2400 { | |
| 2401 if (answer) | |
| 2402 { | |
| 2403 struct answer **p = find_answer (node, answer), *temp; | |
| 2404 | |
| 2405 /* Remove the answer from the list. */ | |
| 2406 temp = *p; | |
| 2407 if (temp) | |
| 2408 *p = temp->next; | |
| 2409 | |
| 2410 /* Did we free the last answer? */ | |
| 2411 if (node->value.answers == 0) | |
| 2412 node->type = NT_VOID; | |
| 2413 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2414 check_eol (pfile, false); |
| 0 | 2415 } |
| 2416 else | |
| 2417 _cpp_free_definition (node); | |
| 2418 } | |
| 2419 | |
| 2420 /* We don't commit the memory for the answer - it's temporary only. */ | |
| 2421 } | |
| 2422 | |
| 2423 /* These are for -D, -U, -A. */ | |
| 2424 | |
| 2425 /* Process the string STR as if it appeared as the body of a #define. | |
| 2426 If STR is just an identifier, define it with value 1. | |
| 2427 If STR has anything after the identifier, then it should | |
| 2428 be identifier=definition. */ | |
| 2429 void | |
| 2430 cpp_define (cpp_reader *pfile, const char *str) | |
| 2431 { | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2432 char *buf; |
|
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
47
diff
changeset
|
2433 const char *p; |
| 0 | 2434 size_t count; |
| 2435 | |
| 2436 /* Copy the entire option so we can modify it. | |
| 2437 Change the first "=" in the string to a space. If there is none, | |
| 2438 tack " 1" on the end. */ | |
| 2439 | |
| 2440 count = strlen (str); | |
| 2441 buf = (char *) alloca (count + 3); | |
| 2442 memcpy (buf, str, count); | |
| 2443 | |
| 2444 p = strchr (str, '='); | |
| 2445 if (p) | |
| 2446 buf[p - str] = ' '; | |
| 2447 else | |
| 2448 { | |
| 2449 buf[count++] = ' '; | |
| 2450 buf[count++] = '1'; | |
| 2451 } | |
| 2452 buf[count] = '\n'; | |
| 2453 | |
| 2454 run_directive (pfile, T_DEFINE, buf, count); | |
| 2455 } | |
| 2456 | |
| 2457 | |
| 2458 /* Use to build macros to be run through cpp_define() as | |
| 2459 described above. | |
| 2460 Example: cpp_define_formatted (pfile, "MACRO=%d", value); */ | |
| 2461 | |
| 2462 void | |
| 2463 cpp_define_formatted (cpp_reader *pfile, const char *fmt, ...) | |
| 2464 { | |
| 111 | 2465 char *ptr; |
| 0 | 2466 |
| 2467 va_list ap; | |
| 2468 va_start (ap, fmt); | |
| 111 | 2469 ptr = xvasprintf (fmt, ap); |
| 0 | 2470 va_end (ap); |
| 2471 | |
| 2472 cpp_define (pfile, ptr); | |
| 2473 free (ptr); | |
| 2474 } | |
| 2475 | |
| 2476 | |
| 2477 /* Slight variant of the above for use by initialize_builtins. */ | |
| 2478 void | |
| 2479 _cpp_define_builtin (cpp_reader *pfile, const char *str) | |
| 2480 { | |
| 2481 size_t len = strlen (str); | |
| 2482 char *buf = (char *) alloca (len + 1); | |
| 2483 memcpy (buf, str, len); | |
| 2484 buf[len] = '\n'; | |
| 2485 run_directive (pfile, T_DEFINE, buf, len); | |
| 2486 } | |
| 2487 | |
| 2488 /* Process MACRO as if it appeared as the body of an #undef. */ | |
| 2489 void | |
| 2490 cpp_undef (cpp_reader *pfile, const char *macro) | |
| 2491 { | |
| 2492 size_t len = strlen (macro); | |
| 2493 char *buf = (char *) alloca (len + 1); | |
| 2494 memcpy (buf, macro, len); | |
| 2495 buf[len] = '\n'; | |
| 2496 run_directive (pfile, T_UNDEF, buf, len); | |
| 2497 } | |
| 2498 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2499 /* Replace a previous definition DEF of the macro STR. If DEF is NULL, |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2500 or first element is zero, then the macro should be undefined. */ |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2501 static void |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2502 cpp_pop_definition (cpp_reader *pfile, struct def_pragma_macro *c) |
| 0 | 2503 { |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2504 cpp_hashnode *node = _cpp_lex_identifier (pfile, c->name); |
| 0 | 2505 if (node == NULL) |
| 2506 return; | |
| 2507 | |
| 2508 if (pfile->cb.before_define) | |
| 2509 pfile->cb.before_define (pfile); | |
| 2510 | |
| 2511 if (node->type == NT_MACRO) | |
| 2512 { | |
| 2513 if (pfile->cb.undef) | |
| 2514 pfile->cb.undef (pfile, pfile->directive_line, node); | |
| 2515 if (CPP_OPTION (pfile, warn_unused_macros)) | |
| 2516 _cpp_warn_if_unused_macro (pfile, node, NULL); | |
| 2517 } | |
| 2518 if (node->type != NT_VOID) | |
| 2519 _cpp_free_definition (node); | |
| 2520 | |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2521 if (c->is_undef) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2522 return; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2523 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2524 size_t namelen; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2525 const uchar *dn; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2526 cpp_hashnode *h = NULL; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2527 cpp_buffer *nbuf; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2528 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2529 namelen = ustrcspn (c->definition, "( \n"); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2530 h = cpp_lookup (pfile, c->definition, namelen); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2531 dn = c->definition + namelen; |
| 0 | 2532 |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2533 h->type = NT_VOID; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2534 h->flags &= ~(NODE_POISONED|NODE_BUILTIN|NODE_DISABLED|NODE_USED); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2535 nbuf = cpp_push_buffer (pfile, dn, ustrchr (dn, '\n') - dn, true); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2536 if (nbuf != NULL) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2537 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2538 _cpp_clean_line (pfile); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2539 nbuf->sysp = 1; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2540 if (!_cpp_create_definition (pfile, h)) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2541 abort (); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2542 _cpp_pop_buffer (pfile); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2543 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2544 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2545 abort (); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2546 h->value.macro->line = c->line; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2547 h->value.macro->syshdr = c->syshdr; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2548 h->value.macro->used = c->used; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
2549 } |
| 0 | 2550 } |
| 2551 | |
| 2552 /* Process the string STR as if it appeared as the body of a #assert. */ | |
| 2553 void | |
| 2554 cpp_assert (cpp_reader *pfile, const char *str) | |
| 2555 { | |
| 2556 handle_assertion (pfile, str, T_ASSERT); | |
| 2557 } | |
| 2558 | |
| 2559 /* Process STR as if it appeared as the body of an #unassert. */ | |
| 2560 void | |
| 2561 cpp_unassert (cpp_reader *pfile, const char *str) | |
| 2562 { | |
| 2563 handle_assertion (pfile, str, T_UNASSERT); | |
| 2564 } | |
| 2565 | |
| 2566 /* Common code for cpp_assert (-A) and cpp_unassert (-A-). */ | |
| 2567 static void | |
| 2568 handle_assertion (cpp_reader *pfile, const char *str, int type) | |
| 2569 { | |
| 2570 size_t count = strlen (str); | |
| 2571 const char *p = strchr (str, '='); | |
| 2572 | |
| 2573 /* Copy the entire option so we can modify it. Change the first | |
| 2574 "=" in the string to a '(', and tack a ')' on the end. */ | |
| 2575 char *buf = (char *) alloca (count + 2); | |
| 2576 | |
| 2577 memcpy (buf, str, count); | |
| 2578 if (p) | |
| 2579 { | |
| 2580 buf[p - str] = '('; | |
| 2581 buf[count++] = ')'; | |
| 2582 } | |
| 2583 buf[count] = '\n'; | |
| 2584 str = buf; | |
| 2585 | |
| 2586 run_directive (pfile, type, str, count); | |
| 2587 } | |
| 2588 | |
| 2589 /* The options structure. */ | |
| 2590 cpp_options * | |
| 2591 cpp_get_options (cpp_reader *pfile) | |
| 2592 { | |
| 2593 return &pfile->opts; | |
| 2594 } | |
| 2595 | |
| 2596 /* The callbacks structure. */ | |
| 2597 cpp_callbacks * | |
| 2598 cpp_get_callbacks (cpp_reader *pfile) | |
| 2599 { | |
| 2600 return &pfile->cb; | |
| 2601 } | |
| 2602 | |
| 2603 /* Copy the given callbacks structure to our own. */ | |
| 2604 void | |
| 2605 cpp_set_callbacks (cpp_reader *pfile, cpp_callbacks *cb) | |
| 2606 { | |
| 2607 pfile->cb = *cb; | |
| 2608 } | |
| 2609 | |
| 2610 /* The dependencies structure. (Creates one if it hasn't already been.) */ | |
| 2611 struct deps * | |
| 2612 cpp_get_deps (cpp_reader *pfile) | |
| 2613 { | |
| 2614 if (!pfile->deps) | |
| 2615 pfile->deps = deps_init (); | |
| 2616 return pfile->deps; | |
| 2617 } | |
| 2618 | |
| 2619 /* Push a new buffer on the buffer stack. Returns the new buffer; it | |
| 2620 doesn't fail. It does not generate a file change call back; that | |
| 2621 is the responsibility of the caller. */ | |
| 2622 cpp_buffer * | |
| 2623 cpp_push_buffer (cpp_reader *pfile, const uchar *buffer, size_t len, | |
| 2624 int from_stage3) | |
| 2625 { | |
| 2626 cpp_buffer *new_buffer = XOBNEW (&pfile->buffer_ob, cpp_buffer); | |
| 2627 | |
| 2628 /* Clears, amongst other things, if_stack and mi_cmacro. */ | |
| 2629 memset (new_buffer, 0, sizeof (cpp_buffer)); | |
| 2630 | |
| 2631 new_buffer->next_line = new_buffer->buf = buffer; | |
| 2632 new_buffer->rlimit = buffer + len; | |
| 2633 new_buffer->from_stage3 = from_stage3; | |
| 2634 new_buffer->prev = pfile->buffer; | |
| 2635 new_buffer->need_line = true; | |
| 2636 | |
| 2637 pfile->buffer = new_buffer; | |
| 2638 | |
| 2639 return new_buffer; | |
| 2640 } | |
| 2641 | |
| 2642 /* Pops a single buffer, with a file change call-back if appropriate. | |
| 2643 Then pushes the next -include file, if any remain. */ | |
| 2644 void | |
| 2645 _cpp_pop_buffer (cpp_reader *pfile) | |
| 2646 { | |
| 2647 cpp_buffer *buffer = pfile->buffer; | |
| 2648 struct _cpp_file *inc = buffer->file; | |
| 2649 struct if_stack *ifs; | |
| 111 | 2650 const unsigned char *to_free; |
| 0 | 2651 |
| 2652 /* Walk back up the conditional stack till we reach its level at | |
| 2653 entry to this file, issuing error messages. */ | |
| 2654 for (ifs = buffer->if_stack; ifs; ifs = ifs->next) | |
| 2655 cpp_error_with_line (pfile, CPP_DL_ERROR, ifs->line, 0, | |
| 2656 "unterminated #%s", dtable[ifs->type].name); | |
| 2657 | |
| 2658 /* In case of a missing #endif. */ | |
| 2659 pfile->state.skipping = 0; | |
| 2660 | |
| 2661 /* _cpp_do_file_change expects pfile->buffer to be the new one. */ | |
| 2662 pfile->buffer = buffer->prev; | |
| 2663 | |
| 111 | 2664 to_free = buffer->to_free; |
| 0 | 2665 free (buffer->notes); |
| 2666 | |
| 2667 /* Free the buffer object now; we may want to push a new buffer | |
| 2668 in _cpp_push_next_include_file. */ | |
| 2669 obstack_free (&pfile->buffer_ob, buffer); | |
| 2670 | |
| 2671 if (inc) | |
| 2672 { | |
| 111 | 2673 _cpp_pop_file_buffer (pfile, inc, to_free); |
| 0 | 2674 |
| 2675 _cpp_do_file_change (pfile, LC_LEAVE, 0, 0, 0); | |
| 2676 } | |
| 2677 } | |
| 2678 | |
| 2679 /* Enter all recognized directives in the hash table. */ | |
| 2680 void | |
| 2681 _cpp_init_directives (cpp_reader *pfile) | |
| 2682 { | |
| 2683 unsigned int i; | |
| 2684 cpp_hashnode *node; | |
| 2685 | |
| 2686 for (i = 0; i < (unsigned int) N_DIRECTIVES; i++) | |
| 2687 { | |
| 2688 node = cpp_lookup (pfile, dtable[i].name, dtable[i].length); | |
| 2689 node->is_directive = 1; | |
| 2690 node->directive_index = i; | |
| 2691 } | |
| 2692 } | |
| 111 | 2693 |
| 2694 /* Extract header file from a bracket include. Parsing starts after '<'. | |
| 2695 The string is malloced and must be freed by the caller. */ | |
| 2696 char * | |
| 2697 _cpp_bracket_include(cpp_reader *pfile) | |
| 2698 { | |
| 2699 return glue_header_name (pfile); | |
| 2700 } | |
| 2701 |