Mercurial > hg > CbC > CbC_gcc
annotate libcpp/internal.h @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Part of CPP library. |
| 145 | 2 Copyright (C) 1997-2020 Free Software Foundation, Inc. |
| 0 | 3 |
| 4 This program is free software; you can redistribute it and/or modify it | |
| 5 under the terms of the GNU General Public License as published by the | |
| 6 Free Software Foundation; either version 3, or (at your option) any | |
| 7 later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
| 15 along with this program; see the file COPYING3. If not see | |
| 16 <http://www.gnu.org/licenses/>. */ | |
| 17 | |
| 18 /* This header defines all the internal data structures and functions | |
| 19 that need to be visible across files. It should not be used outside | |
| 20 cpplib. */ | |
| 21 | |
| 22 #ifndef LIBCPP_INTERNAL_H | |
| 23 #define LIBCPP_INTERNAL_H | |
| 24 | |
| 25 #include "symtab.h" | |
| 131 | 26 #include "cpplib.h" |
| 0 | 27 |
| 28 #if HAVE_ICONV | |
| 29 #include <iconv.h> | |
| 30 #else | |
| 31 #define HAVE_ICONV 0 | |
| 32 typedef int iconv_t; /* dummy */ | |
| 33 #endif | |
| 34 | |
|
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35 #ifdef __cplusplus |
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36 extern "C" { |
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37 #endif |
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38 |
| 0 | 39 struct directive; /* Deliberately incomplete. */ |
| 40 struct pending_option; | |
| 41 struct op; | |
| 42 struct _cpp_strbuf; | |
| 43 | |
| 44 typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t, | |
| 45 struct _cpp_strbuf *); | |
| 46 struct cset_converter | |
| 47 { | |
| 48 convert_f func; | |
| 49 iconv_t cd; | |
| 50 int width; | |
| 51 }; | |
| 52 | |
| 53 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t)) | |
| 54 | |
| 55 /* Test if a sign is valid within a preprocessing number. */ | |
| 56 #define VALID_SIGN(c, prevc) \ | |
| 57 (((c) == '+' || (c) == '-') && \ | |
| 58 ((prevc) == 'e' || (prevc) == 'E' \ | |
| 59 || (((prevc) == 'p' || (prevc) == 'P') \ | |
| 60 && CPP_OPTION (pfile, extended_numbers)))) | |
| 61 | |
| 111 | 62 #define DIGIT_SEP(c) ((c) == '\'' && CPP_OPTION (pfile, digit_separators)) |
| 63 | |
| 0 | 64 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION) |
| 65 #define CPP_BUFFER(PFILE) ((PFILE)->buffer) | |
| 66 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base) | |
| 67 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur) | |
| 68 | |
| 69 #define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \ | |
| 145 | 70 const class line_maps *line_table = PFILE->line_table; \ |
| 111 | 71 const struct line_map_ordinary *map = \ |
| 72 LINEMAPS_LAST_ORDINARY_MAP (line_table); \ | |
| 0 | 73 linenum_type line = SOURCE_LINE (map, line_table->highest_line); \ |
| 74 linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \ | |
| 75 } while (0) | |
| 76 | |
| 77 /* Host alignment handling. */ | |
| 78 struct dummy | |
| 79 { | |
| 80 char c; | |
| 81 union | |
| 82 { | |
| 83 double d; | |
| 84 int *p; | |
| 85 } u; | |
| 86 }; | |
| 87 | |
| 88 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u) | |
| 89 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1)) | |
| 90 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT) | |
| 91 | |
| 131 | 92 #define _cpp_mark_macro_used(NODE) \ |
| 93 (cpp_user_macro_p (NODE) ? (NODE)->value.macro->used = 1 : 0) | |
| 0 | 94 |
| 95 /* A generic memory buffer, and operations on it. */ | |
| 96 typedef struct _cpp_buff _cpp_buff; | |
| 97 struct _cpp_buff | |
| 98 { | |
| 99 struct _cpp_buff *next; | |
| 100 unsigned char *base, *cur, *limit; | |
| 101 }; | |
| 102 | |
| 103 extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t); | |
| 104 extern void _cpp_release_buff (cpp_reader *, _cpp_buff *); | |
| 105 extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t); | |
| 106 extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t); | |
| 107 extern void _cpp_free_buff (_cpp_buff *); | |
| 108 extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t); | |
| 109 extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t); | |
| 110 | |
| 111 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur) | |
| 112 #define BUFF_FRONT(BUFF) ((BUFF)->cur) | |
| 113 #define BUFF_LIMIT(BUFF) ((BUFF)->limit) | |
| 114 | |
| 115 /* #include types. */ | |
| 145 | 116 enum include_type |
| 117 { | |
| 118 /* Directive-based including mechanisms. */ | |
| 119 IT_INCLUDE, /* #include */ | |
| 120 IT_INCLUDE_NEXT, /* #include_next */ | |
| 121 IT_IMPORT, /* #import */ | |
| 122 | |
| 123 /* Non-directive including mechanisms. */ | |
| 124 IT_CMDLINE, /* -include */ | |
| 125 IT_DEFAULT, /* forced header */ | |
| 126 IT_MAIN, /* main */ | |
| 127 | |
| 128 IT_DIRECTIVE_HWM = IT_IMPORT + 1, /* Directives below this. */ | |
| 129 IT_HEADER_HWM = IT_DEFAULT + 1 /* Header files below this. */ | |
| 130 }; | |
| 0 | 131 |
| 132 union utoken | |
| 133 { | |
| 134 const cpp_token *token; | |
| 135 const cpp_token **ptoken; | |
| 136 }; | |
| 137 | |
| 138 /* A "run" of tokens; part of a chain of runs. */ | |
| 139 typedef struct tokenrun tokenrun; | |
| 140 struct tokenrun | |
| 141 { | |
| 142 tokenrun *next, *prev; | |
| 143 cpp_token *base, *limit; | |
| 144 }; | |
| 145 | |
| 146 /* Accessor macros for struct cpp_context. */ | |
| 147 #define FIRST(c) ((c)->u.iso.first) | |
| 148 #define LAST(c) ((c)->u.iso.last) | |
| 149 #define CUR(c) ((c)->u.trad.cur) | |
| 150 #define RLIMIT(c) ((c)->u.trad.rlimit) | |
| 151 | |
| 111 | 152 /* This describes some additional data that is added to the macro |
| 153 token context of type cpp_context, when -ftrack-macro-expansion is | |
| 154 on. */ | |
| 155 typedef struct | |
| 156 { | |
| 157 /* The node of the macro we are referring to. */ | |
| 158 cpp_hashnode *macro_node; | |
| 159 /* This buffer contains an array of virtual locations. The virtual | |
| 160 location at index 0 is the virtual location of the token at index | |
| 161 0 in the current instance of cpp_context; similarly for all the | |
| 162 other virtual locations. */ | |
| 145 | 163 location_t *virt_locs; |
| 111 | 164 /* This is a pointer to the current virtual location. This is used |
| 165 to iterate over the virtual locations while we iterate over the | |
| 166 tokens they belong to. */ | |
| 145 | 167 location_t *cur_virt_loc; |
| 111 | 168 } macro_context; |
| 169 | |
| 170 /* The kind of tokens carried by a cpp_context. */ | |
| 171 enum context_tokens_kind { | |
| 172 /* This is the value of cpp_context::tokens_kind if u.iso.first | |
| 173 contains an instance of cpp_token **. */ | |
| 174 TOKENS_KIND_INDIRECT, | |
| 175 /* This is the value of cpp_context::tokens_kind if u.iso.first | |
| 176 contains an instance of cpp_token *. */ | |
| 177 TOKENS_KIND_DIRECT, | |
| 178 /* This is the value of cpp_context::tokens_kind when the token | |
| 179 context contains tokens resulting from macro expansion. In that | |
| 180 case struct cpp_context::macro points to an instance of struct | |
| 181 macro_context. This is used only when the | |
| 182 -ftrack-macro-expansion flag is on. */ | |
| 183 TOKENS_KIND_EXTENDED | |
| 184 }; | |
| 185 | |
| 0 | 186 typedef struct cpp_context cpp_context; |
| 187 struct cpp_context | |
| 188 { | |
| 189 /* Doubly-linked list. */ | |
| 190 cpp_context *next, *prev; | |
| 191 | |
| 192 union | |
| 193 { | |
| 194 /* For ISO macro expansion. Contexts other than the base context | |
| 195 are contiguous tokens. e.g. macro expansions, expanded | |
| 196 argument tokens. */ | |
| 197 struct | |
| 198 { | |
| 199 union utoken first; | |
| 200 union utoken last; | |
| 201 } iso; | |
| 202 | |
| 203 /* For traditional macro expansion. */ | |
| 204 struct | |
| 205 { | |
| 206 const unsigned char *cur; | |
| 207 const unsigned char *rlimit; | |
| 208 } trad; | |
| 209 } u; | |
| 210 | |
| 211 /* If non-NULL, a buffer used for storage related to this context. | |
| 212 When the context is popped, the buffer is released. */ | |
| 213 _cpp_buff *buff; | |
| 214 | |
| 111 | 215 /* If tokens_kind is TOKEN_KIND_EXTENDED, then (as we thus are in a |
| 216 macro context) this is a pointer to an instance of macro_context. | |
| 217 Otherwise if tokens_kind is *not* TOKEN_KIND_EXTENDED, then, if | |
| 218 we are in a macro context, this is a pointer to an instance of | |
| 219 cpp_hashnode, representing the name of the macro this context is | |
| 220 for. If we are not in a macro context, then this is just NULL. | |
| 221 Note that when tokens_kind is TOKEN_KIND_EXTENDED, the memory | |
| 222 used by the instance of macro_context pointed to by this member | |
| 223 is de-allocated upon de-allocation of the instance of struct | |
| 224 cpp_context. */ | |
| 225 union | |
| 226 { | |
| 227 macro_context *mc; | |
| 228 cpp_hashnode *macro; | |
| 229 } c; | |
| 0 | 230 |
| 111 | 231 /* This determines the type of tokens held by this context. */ |
| 232 enum context_tokens_kind tokens_kind; | |
| 0 | 233 }; |
| 234 | |
| 235 struct lexer_state | |
| 236 { | |
| 145 | 237 /* 1 if we're handling a directive. 2 if it's an include-like |
| 238 directive. */ | |
| 0 | 239 unsigned char in_directive; |
| 240 | |
| 241 /* Nonzero if in a directive that will handle padding tokens itself. | |
| 242 #include needs this to avoid problems with computed include and | |
| 243 spacing between tokens. */ | |
| 244 unsigned char directive_wants_padding; | |
| 245 | |
| 246 /* True if we are skipping a failed conditional group. */ | |
| 247 unsigned char skipping; | |
| 248 | |
| 249 /* Nonzero if in a directive that takes angle-bracketed headers. */ | |
| 250 unsigned char angled_headers; | |
| 251 | |
| 252 /* Nonzero if in a #if or #elif directive. */ | |
| 253 unsigned char in_expression; | |
| 254 | |
| 255 /* Nonzero to save comments. Turned off if discard_comments, and in | |
| 256 all directives apart from #define. */ | |
| 257 unsigned char save_comments; | |
| 258 | |
| 131 | 259 /* Nonzero if lexing __VA_ARGS__ and __VA_OPT__ are valid. */ |
| 0 | 260 unsigned char va_args_ok; |
| 261 | |
| 262 /* Nonzero if lexing poisoned identifiers is valid. */ | |
| 263 unsigned char poisoned_ok; | |
| 264 | |
| 265 /* Nonzero to prevent macro expansion. */ | |
| 266 unsigned char prevent_expansion; | |
| 267 | |
| 268 /* Nonzero when parsing arguments to a function-like macro. */ | |
| 269 unsigned char parsing_args; | |
| 270 | |
| 271 /* Nonzero if prevent_expansion is true only because output is | |
| 272 being discarded. */ | |
| 273 unsigned char discarding_output; | |
| 274 | |
| 275 /* Nonzero to skip evaluating part of an expression. */ | |
| 276 unsigned int skip_eval; | |
| 277 | |
| 278 /* Nonzero when handling a deferred pragma. */ | |
| 279 unsigned char in_deferred_pragma; | |
| 280 | |
| 281 /* Nonzero if the deferred pragma being handled allows macro expansion. */ | |
| 282 unsigned char pragma_allow_expansion; | |
| 283 }; | |
| 284 | |
| 285 /* Special nodes - identifiers with predefined significance. */ | |
| 286 struct spec_nodes | |
| 287 { | |
| 288 cpp_hashnode *n_defined; /* defined operator */ | |
| 289 cpp_hashnode *n_true; /* C++ keyword true */ | |
| 290 cpp_hashnode *n_false; /* C++ keyword false */ | |
| 291 cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */ | |
| 131 | 292 cpp_hashnode *n__VA_OPT__; /* C++ vararg macros */ |
| 0 | 293 }; |
| 294 | |
| 295 typedef struct _cpp_line_note _cpp_line_note; | |
| 296 struct _cpp_line_note | |
| 297 { | |
| 298 /* Location in the clean line the note refers to. */ | |
| 299 const unsigned char *pos; | |
| 300 | |
| 301 /* Type of note. The 9 'from' trigraph characters represent those | |
| 302 trigraphs, '\\' an escaped newline, ' ' an escaped newline with | |
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303 intervening space, 0 represents a note that has already been handled, |
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304 and anything else is invalid. */ |
| 0 | 305 unsigned int type; |
| 306 }; | |
| 307 | |
| 308 /* Represents the contents of a file cpplib has read in. */ | |
| 309 struct cpp_buffer | |
| 310 { | |
| 311 const unsigned char *cur; /* Current location. */ | |
| 312 const unsigned char *line_base; /* Start of current physical line. */ | |
| 313 const unsigned char *next_line; /* Start of to-be-cleaned logical line. */ | |
| 314 | |
| 315 const unsigned char *buf; /* Entire character buffer. */ | |
| 316 const unsigned char *rlimit; /* Writable byte at end of file. */ | |
| 111 | 317 const unsigned char *to_free; /* Pointer that should be freed when |
| 318 popping the buffer. */ | |
| 0 | 319 |
| 320 _cpp_line_note *notes; /* Array of notes. */ | |
| 321 unsigned int cur_note; /* Next note to process. */ | |
| 322 unsigned int notes_used; /* Number of notes. */ | |
| 323 unsigned int notes_cap; /* Size of allocated array. */ | |
| 324 | |
| 325 struct cpp_buffer *prev; | |
| 326 | |
| 327 /* Pointer into the file table; non-NULL if this is a file buffer. | |
| 328 Used for include_next and to record control macros. */ | |
| 329 struct _cpp_file *file; | |
| 330 | |
| 331 /* Saved value of __TIMESTAMP__ macro - date and time of last modification | |
| 332 of the assotiated file. */ | |
| 333 const unsigned char *timestamp; | |
| 334 | |
| 335 /* Value of if_stack at start of this file. | |
| 336 Used to prohibit unmatched #endif (etc) in an include file. */ | |
| 337 struct if_stack *if_stack; | |
| 338 | |
| 339 /* True if we need to get the next clean line. */ | |
| 145 | 340 bool need_line : 1; |
| 0 | 341 |
| 342 /* True if we have already warned about C++ comments in this file. | |
| 343 The warning happens only for C89 extended mode with -pedantic on, | |
| 344 or for -Wtraditional, and only once per file (otherwise it would | |
| 345 be far too noisy). */ | |
| 145 | 346 bool warned_cplusplus_comments : 1; |
| 0 | 347 |
| 348 /* True if we don't process trigraphs and escaped newlines. True | |
| 349 for preprocessed input, command line directives, and _Pragma | |
| 350 buffers. */ | |
| 145 | 351 bool from_stage3 : 1; |
| 0 | 352 |
| 353 /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is | |
| 354 true, a CPP_EOF token is then returned. Otherwise, the next | |
| 355 token from the enclosing buffer is returned. */ | |
| 145 | 356 bool return_at_eof : 1; |
| 0 | 357 |
| 358 /* One for a system header, two for a C system header file that therefore | |
| 359 needs to be extern "C" protected in C++, and zero otherwise. */ | |
| 360 unsigned char sysp; | |
| 361 | |
| 362 /* The directory of the this buffer's file. Its NAME member is not | |
| 363 allocated, so we don't need to worry about freeing it. */ | |
| 364 struct cpp_dir dir; | |
| 365 | |
| 366 /* Descriptor for converting from the input character set to the | |
| 367 source character set. */ | |
| 368 struct cset_converter input_cset_desc; | |
| 369 }; | |
| 370 | |
|
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371 /* The list of saved macros by push_macro pragma. */ |
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372 struct def_pragma_macro { |
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373 /* Chain element to previous saved macro. */ |
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374 struct def_pragma_macro *next; |
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375 /* Name of the macro. */ |
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376 char *name; |
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377 /* The stored macro content. */ |
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378 unsigned char *definition; |
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379 |
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380 /* Definition line number. */ |
| 145 | 381 location_t line; |
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382 /* If macro defined in system header. */ |
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383 unsigned int syshdr : 1; |
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384 /* Nonzero if it has been expanded or had its existence tested. */ |
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385 unsigned int used : 1; |
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386 |
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387 /* Mark if we save an undefined macro. */ |
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388 unsigned int is_undef : 1; |
| 145 | 389 /* Nonzero if it was a builtin macro. */ |
| 390 unsigned int is_builtin : 1; | |
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391 }; |
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392 |
| 0 | 393 /* A cpp_reader encapsulates the "state" of a pre-processor run. |
| 394 Applying cpp_get_token repeatedly yields a stream of pre-processor | |
| 395 tokens. Usually, there is only one cpp_reader object active. */ | |
| 396 struct cpp_reader | |
| 397 { | |
| 398 /* Top of buffer stack. */ | |
| 399 cpp_buffer *buffer; | |
| 400 | |
| 401 /* Overlaid buffer (can be different after processing #include). */ | |
| 402 cpp_buffer *overlaid_buffer; | |
| 403 | |
| 404 /* Lexer state. */ | |
| 405 struct lexer_state state; | |
| 406 | |
| 407 /* Source line tracking. */ | |
| 145 | 408 class line_maps *line_table; |
| 0 | 409 |
| 410 /* The line of the '#' of the current directive. */ | |
| 145 | 411 location_t directive_line; |
| 0 | 412 |
| 413 /* Memory buffers. */ | |
| 414 _cpp_buff *a_buff; /* Aligned permanent storage. */ | |
| 415 _cpp_buff *u_buff; /* Unaligned permanent storage. */ | |
| 416 _cpp_buff *free_buffs; /* Free buffer chain. */ | |
| 417 | |
| 418 /* Context stack. */ | |
| 419 struct cpp_context base_context; | |
| 420 struct cpp_context *context; | |
| 421 | |
| 422 /* If in_directive, the directive if known. */ | |
| 423 const struct directive *directive; | |
| 424 | |
| 425 /* Token generated while handling a directive, if any. */ | |
| 426 cpp_token directive_result; | |
| 427 | |
| 428 /* When expanding a macro at top-level, this is the location of the | |
| 429 macro invocation. */ | |
| 145 | 430 location_t invocation_location; |
| 0 | 431 |
| 111 | 432 /* This is the node representing the macro being expanded at |
| 433 top-level. The value of this data member is valid iff | |
| 145 | 434 cpp_in_macro_expansion_p() returns TRUE. */ |
| 111 | 435 cpp_hashnode *top_most_macro_node; |
| 436 | |
| 437 /* Nonzero if we are about to expand a macro. Note that if we are | |
| 438 really expanding a macro, the function macro_of_context returns | |
| 439 the macro being expanded and this flag is set to false. Client | |
| 145 | 440 code should use the function cpp_in_macro_expansion_p to know if we |
| 111 | 441 are either about to expand a macro, or are actually expanding |
| 442 one. */ | |
| 443 bool about_to_expand_macro_p; | |
| 0 | 444 |
| 445 /* Search paths for include files. */ | |
| 446 struct cpp_dir *quote_include; /* "" */ | |
| 447 struct cpp_dir *bracket_include; /* <> */ | |
| 448 struct cpp_dir no_search_path; /* No path. */ | |
| 449 | |
| 450 /* Chain of all hashed _cpp_file instances. */ | |
| 451 struct _cpp_file *all_files; | |
| 452 | |
| 453 struct _cpp_file *main_file; | |
| 454 | |
| 455 /* File and directory hash table. */ | |
| 456 struct htab *file_hash; | |
| 457 struct htab *dir_hash; | |
| 458 struct file_hash_entry_pool *file_hash_entries; | |
| 459 | |
| 460 /* Negative path lookup hash table. */ | |
| 461 struct htab *nonexistent_file_hash; | |
| 462 struct obstack nonexistent_file_ob; | |
| 463 | |
| 464 /* Nonzero means don't look for #include "foo" the source-file | |
| 465 directory. */ | |
| 466 bool quote_ignores_source_dir; | |
| 467 | |
| 468 /* Nonzero if any file has contained #pragma once or #import has | |
| 469 been used. */ | |
| 470 bool seen_once_only; | |
| 471 | |
| 472 /* Multiple include optimization. */ | |
| 473 const cpp_hashnode *mi_cmacro; | |
| 474 const cpp_hashnode *mi_ind_cmacro; | |
| 475 bool mi_valid; | |
| 476 | |
| 477 /* Lexing. */ | |
| 478 cpp_token *cur_token; | |
| 479 tokenrun base_run, *cur_run; | |
| 480 unsigned int lookaheads; | |
| 481 | |
| 482 /* Nonzero prevents the lexer from re-using the token runs. */ | |
| 483 unsigned int keep_tokens; | |
| 484 | |
| 485 /* Buffer to hold macro definition string. */ | |
| 486 unsigned char *macro_buffer; | |
| 487 unsigned int macro_buffer_len; | |
| 488 | |
| 489 /* Descriptor for converting from the source character set to the | |
| 490 execution character set. */ | |
| 491 struct cset_converter narrow_cset_desc; | |
| 492 | |
| 493 /* Descriptor for converting from the source character set to the | |
|
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494 UTF-8 execution character set. */ |
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495 struct cset_converter utf8_cset_desc; |
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496 |
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497 /* Descriptor for converting from the source character set to the |
| 0 | 498 UTF-16 execution character set. */ |
| 499 struct cset_converter char16_cset_desc; | |
| 500 | |
| 501 /* Descriptor for converting from the source character set to the | |
| 502 UTF-32 execution character set. */ | |
| 503 struct cset_converter char32_cset_desc; | |
| 504 | |
| 505 /* Descriptor for converting from the source character set to the | |
| 506 wide execution character set. */ | |
| 507 struct cset_converter wide_cset_desc; | |
| 508 | |
| 509 /* Date and time text. Calculated together if either is requested. */ | |
| 510 const unsigned char *date; | |
| 511 const unsigned char *time; | |
| 512 | |
| 111 | 513 /* Externally set timestamp to replace current date and time useful for |
| 514 reproducibility. It should be initialized to -2 (not yet set) and | |
| 515 set to -1 to disable it or to a non-negative value to enable it. */ | |
| 516 time_t source_date_epoch; | |
| 517 | |
| 0 | 518 /* EOF token, and a token forcing paste avoidance. */ |
| 519 cpp_token avoid_paste; | |
| 520 cpp_token eof; | |
| 521 | |
| 522 /* Opaque handle to the dependencies of mkdeps.c. */ | |
| 145 | 523 class mkdeps *deps; |
| 0 | 524 |
| 525 /* Obstack holding all macro hash nodes. This never shrinks. | |
| 526 See identifiers.c */ | |
| 527 struct obstack hash_ob; | |
| 528 | |
| 529 /* Obstack holding buffer and conditional structures. This is a | |
| 530 real stack. See directives.c. */ | |
| 531 struct obstack buffer_ob; | |
| 532 | |
| 533 /* Pragma table - dynamic, because a library user can add to the | |
| 534 list of recognized pragmas. */ | |
| 535 struct pragma_entry *pragmas; | |
| 536 | |
| 537 /* Call backs to cpplib client. */ | |
| 538 struct cpp_callbacks cb; | |
| 539 | |
| 540 /* Identifier hash table. */ | |
| 541 struct ht *hash_table; | |
| 542 | |
| 543 /* Expression parser stack. */ | |
| 544 struct op *op_stack, *op_limit; | |
| 545 | |
| 546 /* User visible options. */ | |
| 547 struct cpp_options opts; | |
| 548 | |
| 549 /* Special nodes - identifiers with predefined significance to the | |
| 550 preprocessor. */ | |
| 551 struct spec_nodes spec_nodes; | |
| 552 | |
| 553 /* Whether cpplib owns the hashtable. */ | |
| 554 bool our_hashtable; | |
| 555 | |
| 556 /* Traditional preprocessing output buffer (a logical line). */ | |
| 557 struct | |
| 558 { | |
| 559 unsigned char *base; | |
| 560 unsigned char *limit; | |
| 561 unsigned char *cur; | |
| 145 | 562 location_t first_line; |
| 0 | 563 } out; |
| 564 | |
| 565 /* Used for buffer overlays by traditional.c. */ | |
| 566 const unsigned char *saved_cur, *saved_rlimit, *saved_line_base; | |
| 567 | |
| 568 /* A saved list of the defined macros, for dependency checking | |
| 569 of precompiled headers. */ | |
| 570 struct cpp_savedstate *savedstate; | |
| 571 | |
| 572 /* Next value of __COUNTER__ macro. */ | |
| 573 unsigned int counter; | |
| 574 | |
| 575 /* Table of comments, when state.save_comments is true. */ | |
| 576 cpp_comment_table comments; | |
|
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577 |
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578 /* List of saved macros by push_macro. */ |
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579 struct def_pragma_macro *pushed_macros; |
| 111 | 580 |
| 145 | 581 /* If non-zero, the lexer will use this location for the next token |
| 111 | 582 instead of getting a location from the linemap. */ |
| 145 | 583 location_t forced_token_location; |
| 0 | 584 }; |
| 585 | |
| 586 /* Character classes. Based on the more primitive macros in safe-ctype.h. | |
| 587 If the definition of `numchar' looks odd to you, please look up the | |
| 588 definition of a pp-number in the C standard [section 6.4.8 of C99]. | |
| 589 | |
| 590 In the unlikely event that characters other than \r and \n enter | |
| 591 the set is_vspace, the macro handle_newline() in lex.c must be | |
| 592 updated. */ | |
| 593 #define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident)) | |
| 594 | |
| 595 #define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x)) | |
| 596 #define is_numchar(x) ISIDNUM(x) | |
| 597 #define is_idstart(x) (ISIDST(x) || _dollar_ok(x)) | |
| 598 #define is_numstart(x) ISDIGIT(x) | |
| 599 #define is_hspace(x) ISBLANK(x) | |
| 600 #define is_vspace(x) IS_VSPACE(x) | |
| 601 #define is_nvspace(x) IS_NVSPACE(x) | |
| 602 #define is_space(x) IS_SPACE_OR_NUL(x) | |
| 603 | |
| 145 | 604 #define SEEN_EOL() (pfile->cur_token[-1].type == CPP_EOF) |
| 605 | |
| 0 | 606 /* This table is constant if it can be initialized at compile time, |
| 607 which is the case if cpp was compiled with GCC >=2.7, or another | |
| 608 compiler that supports C99. */ | |
| 609 #if HAVE_DESIGNATED_INITIALIZERS | |
| 610 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; | |
| 611 #else | |
| 612 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; | |
| 613 #endif | |
| 614 | |
| 131 | 615 #if !defined (HAVE_UCHAR) && !defined (IN_GCC) |
| 616 typedef unsigned char uchar; | |
| 617 #endif | |
| 618 | |
| 619 #define UC (const uchar *) /* Intended use: UC"string" */ | |
| 620 | |
| 0 | 621 /* Macros. */ |
| 622 | |
| 623 static inline int cpp_in_system_header (cpp_reader *); | |
| 624 static inline int | |
| 625 cpp_in_system_header (cpp_reader *pfile) | |
| 626 { | |
| 627 return pfile->buffer ? pfile->buffer->sysp : 0; | |
| 628 } | |
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629 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, cpp_pedantic) |
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630 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, cpp_warn_traditional) |
| 0 | 631 |
| 632 static inline int cpp_in_primary_file (cpp_reader *); | |
| 633 static inline int | |
| 634 cpp_in_primary_file (cpp_reader *pfile) | |
| 635 { | |
| 636 return pfile->line_table->depth == 1; | |
| 637 } | |
| 638 | |
| 145 | 639 /* True if NODE is a macro for the purposes of ifdef, defined etc. */ |
| 640 inline bool _cpp_defined_macro_p (cpp_hashnode *node) | |
| 641 { | |
| 642 /* Do not treat conditional macros as being defined. This is due to | |
| 643 the powerpc port using conditional macros for 'vector', 'bool', | |
| 644 and 'pixel' to act as conditional keywords. This messes up tests | |
| 645 like #ifndef bool. */ | |
| 646 return cpp_macro_p (node) && !(node->flags & NODE_CONDITIONAL); | |
| 647 } | |
| 648 | |
| 0 | 649 /* In macro.c */ |
| 131 | 650 extern void _cpp_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node); |
| 651 inline void _cpp_maybe_notify_macro_use (cpp_reader *pfile, cpp_hashnode *node) | |
| 652 { | |
| 653 if (!(node->flags & NODE_USED)) | |
| 654 _cpp_notify_macro_use (pfile, node); | |
| 655 } | |
| 656 extern cpp_macro *_cpp_new_macro (cpp_reader *, cpp_macro_kind, void *); | |
| 0 | 657 extern void _cpp_free_definition (cpp_hashnode *); |
| 658 extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *); | |
| 659 extern void _cpp_pop_context (cpp_reader *); | |
| 660 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *, | |
| 661 const unsigned char *, size_t); | |
| 131 | 662 extern bool _cpp_save_parameter (cpp_reader *, unsigned, cpp_hashnode *, |
| 111 | 663 cpp_hashnode *); |
| 131 | 664 extern void _cpp_unsave_parameters (cpp_reader *, unsigned); |
| 0 | 665 extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *, |
| 666 unsigned int); | |
| 667 extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *, | |
| 111 | 668 cpp_hashnode *, |
| 145 | 669 location_t = 0); |
| 0 | 670 extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *); |
| 671 extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *, | |
| 672 const cpp_token *, unsigned int); | |
| 673 extern void _cpp_backup_tokens_direct (cpp_reader *, unsigned int); | |
| 674 | |
| 675 /* In identifiers.c */ | |
| 111 | 676 extern void _cpp_init_hashtable (cpp_reader *, cpp_hash_table *); |
| 0 | 677 extern void _cpp_destroy_hashtable (cpp_reader *); |
| 678 | |
| 679 /* In files.c */ | |
| 680 typedef struct _cpp_file _cpp_file; | |
| 681 extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *, | |
| 145 | 682 int angle, bool fake, bool preinclude, |
| 683 bool has_include, location_t); | |
| 0 | 684 extern bool _cpp_find_failed (_cpp_file *); |
| 685 extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *); | |
| 686 extern void _cpp_fake_include (cpp_reader *, const char *); | |
| 145 | 687 extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, include_type, location_t); |
| 0 | 688 extern bool _cpp_stack_include (cpp_reader *, const char *, int, |
| 145 | 689 enum include_type, location_t); |
| 0 | 690 extern int _cpp_compare_file_date (cpp_reader *, const char *, int); |
| 691 extern void _cpp_report_missing_guards (cpp_reader *); | |
| 692 extern void _cpp_init_files (cpp_reader *); | |
| 693 extern void _cpp_cleanup_files (cpp_reader *); | |
| 111 | 694 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *, |
| 695 const unsigned char *); | |
| 0 | 696 extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f); |
| 697 extern bool _cpp_read_file_entries (cpp_reader *, FILE *); | |
| 111 | 698 extern const char *_cpp_get_file_name (_cpp_file *); |
| 0 | 699 extern struct stat *_cpp_get_file_stat (_cpp_file *); |
| 111 | 700 extern bool _cpp_has_header (cpp_reader *, const char *, int, |
| 701 enum include_type); | |
| 0 | 702 |
| 703 /* In expr.c */ | |
| 704 extern bool _cpp_parse_expr (cpp_reader *, bool); | |
| 705 extern struct op *_cpp_expand_op_stack (cpp_reader *); | |
| 706 | |
| 707 /* In lex.c */ | |
| 708 extern void _cpp_process_line_notes (cpp_reader *, int); | |
| 709 extern void _cpp_clean_line (cpp_reader *); | |
| 710 extern bool _cpp_get_fresh_line (cpp_reader *); | |
| 711 extern bool _cpp_skip_block_comment (cpp_reader *); | |
| 712 extern cpp_token *_cpp_temp_token (cpp_reader *); | |
| 713 extern const cpp_token *_cpp_lex_token (cpp_reader *); | |
| 714 extern cpp_token *_cpp_lex_direct (cpp_reader *); | |
| 111 | 715 extern unsigned char *_cpp_spell_ident_ucns (unsigned char *, cpp_hashnode *); |
| 0 | 716 extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *); |
| 717 extern void _cpp_init_tokenrun (tokenrun *, unsigned int); | |
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718 extern cpp_hashnode *_cpp_lex_identifier (cpp_reader *, const char *); |
| 111 | 719 extern int _cpp_remaining_tokens_num_in_context (cpp_context *); |
| 720 extern void _cpp_init_lexer (void); | |
| 131 | 721 static inline void *_cpp_reserve_room (cpp_reader *pfile, size_t have, |
| 722 size_t extra) | |
| 723 { | |
| 724 if (BUFF_ROOM (pfile->a_buff) < (have + extra)) | |
| 725 _cpp_extend_buff (pfile, &pfile->a_buff, extra); | |
| 726 return BUFF_FRONT (pfile->a_buff); | |
| 727 } | |
| 728 extern void *_cpp_commit_buff (cpp_reader *pfile, size_t size); | |
| 0 | 729 |
| 730 /* In init.c. */ | |
| 731 extern void _cpp_maybe_push_include_file (cpp_reader *); | |
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732 extern const char *cpp_named_operator2name (enum cpp_ttype type); |
| 145 | 733 extern void _cpp_restore_special_builtin (cpp_reader *pfile, |
| 734 struct def_pragma_macro *); | |
| 0 | 735 |
| 736 /* In directives.c */ | |
| 737 extern int _cpp_test_assertion (cpp_reader *, unsigned int *); | |
| 145 | 738 extern int _cpp_handle_directive (cpp_reader *, bool); |
| 0 | 739 extern void _cpp_define_builtin (cpp_reader *, const char *); |
| 740 extern char ** _cpp_save_pragma_names (cpp_reader *); | |
| 741 extern void _cpp_restore_pragma_names (cpp_reader *, char **); | |
| 145 | 742 extern int _cpp_do__Pragma (cpp_reader *, location_t); |
| 0 | 743 extern void _cpp_init_directives (cpp_reader *); |
| 744 extern void _cpp_init_internal_pragmas (cpp_reader *); | |
| 745 extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *, | |
| 746 linenum_type, unsigned int); | |
| 747 extern void _cpp_pop_buffer (cpp_reader *); | |
| 111 | 748 extern char *_cpp_bracket_include (cpp_reader *); |
| 0 | 749 |
| 750 /* In directives.c */ | |
| 751 struct _cpp_dir_only_callbacks | |
| 752 { | |
| 753 /* Called to print a block of lines. */ | |
| 754 void (*print_lines) (int, const void *, size_t); | |
| 145 | 755 bool (*maybe_print_line) (location_t); |
| 0 | 756 }; |
| 757 | |
| 758 extern void _cpp_preprocess_dir_only (cpp_reader *, | |
| 759 const struct _cpp_dir_only_callbacks *); | |
| 760 | |
| 761 /* In traditional.c. */ | |
| 111 | 762 extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *, bool); |
| 0 | 763 extern bool _cpp_read_logical_line_trad (cpp_reader *); |
| 764 extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *, | |
| 765 size_t); | |
| 766 extern void _cpp_remove_overlay (cpp_reader *); | |
| 131 | 767 extern cpp_macro *_cpp_create_trad_definition (cpp_reader *); |
| 0 | 768 extern bool _cpp_expansions_different_trad (const cpp_macro *, |
| 769 const cpp_macro *); | |
| 770 extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *, | |
| 771 unsigned char *); | |
| 772 extern size_t _cpp_replacement_text_len (const cpp_macro *); | |
| 773 | |
| 774 /* In charset.c. */ | |
| 775 | |
| 776 /* The normalization state at this point in the sequence. | |
| 777 It starts initialized to all zeros, and at the end | |
| 778 'level' is the normalization level of the sequence. */ | |
| 779 | |
| 780 struct normalize_state | |
| 781 { | |
| 111 | 782 /* The previous starter character. */ |
| 0 | 783 cppchar_t previous; |
| 111 | 784 /* The combining class of the previous character (whether or not a |
| 785 starter). */ | |
| 0 | 786 unsigned char prev_class; |
| 787 /* The lowest normalization level so far. */ | |
| 788 enum cpp_normalize_level level; | |
| 789 }; | |
| 790 #define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC } | |
| 791 #define NORMALIZE_STATE_RESULT(st) ((st)->level) | |
| 792 | |
| 111 | 793 /* We saw a character C that matches ISIDNUM(), update a |
| 0 | 794 normalize_state appropriately. */ |
| 111 | 795 #define NORMALIZE_STATE_UPDATE_IDNUM(st, c) \ |
| 796 ((st)->previous = (c), (st)->prev_class = 0) | |
| 0 | 797 |
| 111 | 798 extern bool _cpp_valid_ucn (cpp_reader *, const unsigned char **, |
| 799 const unsigned char *, int, | |
| 800 struct normalize_state *state, | |
| 801 cppchar_t *, | |
| 802 source_range *char_range, | |
| 803 cpp_string_location_reader *loc_reader); | |
| 145 | 804 |
| 805 extern bool _cpp_valid_utf8 (cpp_reader *pfile, | |
| 806 const uchar **pstr, | |
| 807 const uchar *limit, | |
| 808 int identifier_pos, | |
| 809 struct normalize_state *nst, | |
| 810 cppchar_t *cp); | |
| 811 | |
| 0 | 812 extern void _cpp_destroy_iconv (cpp_reader *); |
| 813 extern unsigned char *_cpp_convert_input (cpp_reader *, const char *, | |
| 814 unsigned char *, size_t, size_t, | |
| 815 const unsigned char **, off_t *); | |
| 816 extern const char *_cpp_default_encoding (void); | |
| 817 extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile, | |
| 818 const unsigned char *id, | |
| 819 size_t len); | |
| 820 | |
| 821 /* Utility routines and macros. */ | |
| 822 #define DSC(str) (const unsigned char *)str, sizeof str - 1 | |
| 823 | |
| 824 /* These are inline functions instead of macros so we can get type | |
| 825 checking. */ | |
| 826 static inline int ustrcmp (const unsigned char *, const unsigned char *); | |
| 827 static inline int ustrncmp (const unsigned char *, const unsigned char *, | |
| 828 size_t); | |
| 829 static inline size_t ustrlen (const unsigned char *); | |
| 111 | 830 static inline const unsigned char *uxstrdup (const unsigned char *); |
| 831 static inline const unsigned char *ustrchr (const unsigned char *, int); | |
| 0 | 832 static inline int ufputs (const unsigned char *, FILE *); |
| 833 | |
| 834 /* Use a const char for the second parameter since it is usually a literal. */ | |
| 835 static inline int ustrcspn (const unsigned char *, const char *); | |
| 836 | |
| 837 static inline int | |
| 838 ustrcmp (const unsigned char *s1, const unsigned char *s2) | |
| 839 { | |
| 840 return strcmp ((const char *)s1, (const char *)s2); | |
| 841 } | |
| 842 | |
| 843 static inline int | |
| 844 ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n) | |
| 845 { | |
| 846 return strncmp ((const char *)s1, (const char *)s2, n); | |
| 847 } | |
| 848 | |
| 849 static inline int | |
| 850 ustrcspn (const unsigned char *s1, const char *s2) | |
| 851 { | |
| 852 return strcspn ((const char *)s1, s2); | |
| 853 } | |
| 854 | |
| 855 static inline size_t | |
| 856 ustrlen (const unsigned char *s1) | |
| 857 { | |
| 858 return strlen ((const char *)s1); | |
| 859 } | |
| 860 | |
| 111 | 861 static inline const unsigned char * |
| 0 | 862 uxstrdup (const unsigned char *s1) |
| 863 { | |
| 111 | 864 return (const unsigned char *) xstrdup ((const char *)s1); |
| 0 | 865 } |
| 866 | |
| 111 | 867 static inline const unsigned char * |
| 0 | 868 ustrchr (const unsigned char *s1, int c) |
| 869 { | |
| 111 | 870 return (const unsigned char *) strchr ((const char *)s1, c); |
| 0 | 871 } |
| 872 | |
| 873 static inline int | |
| 874 ufputs (const unsigned char *s, FILE *f) | |
| 875 { | |
| 876 return fputs ((const char *)s, f); | |
| 877 } | |
| 878 | |
| 111 | 879 /* In line-map.c. */ |
| 880 | |
| 881 /* Create a macro map. A macro map encodes source locations of tokens | |
| 882 that are part of a macro replacement-list, at a macro expansion | |
| 883 point. See the extensive comments of struct line_map and struct | |
| 884 line_map_macro, in line-map.h. | |
| 885 | |
| 886 This map shall be created when the macro is expanded. The map | |
| 887 encodes the source location of the expansion point of the macro as | |
| 888 well as the "original" source location of each token that is part | |
| 889 of the macro replacement-list. If a macro is defined but never | |
| 890 expanded, it has no macro map. SET is the set of maps the macro | |
| 891 map should be part of. MACRO_NODE is the macro which the new macro | |
| 892 map should encode source locations for. EXPANSION is the location | |
| 893 of the expansion point of MACRO. For function-like macros | |
| 894 invocations, it's best to make it point to the closing parenthesis | |
| 895 of the macro, rather than the the location of the first character | |
| 896 of the macro. NUM_TOKENS is the number of tokens that are part of | |
| 897 the replacement-list of MACRO. */ | |
| 145 | 898 const line_map_macro *linemap_enter_macro (class line_maps *, |
| 111 | 899 struct cpp_hashnode*, |
| 145 | 900 location_t, |
| 111 | 901 unsigned int); |
| 902 | |
| 903 /* Create and return a virtual location for a token that is part of a | |
| 904 macro expansion-list at a macro expansion point. See the comment | |
| 905 inside struct line_map_macro to see what an expansion-list exactly | |
| 906 is. | |
| 907 | |
| 908 A call to this function must come after a call to | |
| 909 linemap_enter_macro. | |
| 910 | |
| 911 MAP is the map into which the source location is created. TOKEN_NO | |
| 912 is the index of the token in the macro replacement-list, starting | |
| 913 at number 0. | |
| 914 | |
| 915 ORIG_LOC is the location of the token outside of this macro | |
| 916 expansion. If the token comes originally from the macro | |
| 917 definition, it is the locus in the macro definition; otherwise it | |
| 918 is a location in the context of the caller of this macro expansion | |
| 919 (which is a virtual location or a source location if the caller is | |
| 920 itself a macro expansion or not). | |
| 921 | |
| 922 MACRO_DEFINITION_LOC is the location in the macro definition, | |
| 923 either of the token itself or of a macro parameter that it | |
| 924 replaces. */ | |
| 145 | 925 location_t linemap_add_macro_token (const line_map_macro *, |
| 926 unsigned int, | |
| 927 location_t, | |
| 928 location_t); | |
| 111 | 929 |
| 930 /* Return the source line number corresponding to source location | |
| 931 LOCATION. SET is the line map set LOCATION comes from. If | |
| 932 LOCATION is the location of token that is part of the | |
| 933 expansion-list of a macro expansion return the line number of the | |
| 934 macro expansion point. */ | |
| 145 | 935 int linemap_get_expansion_line (class line_maps *, |
| 936 location_t); | |
| 111 | 937 |
| 938 /* Return the path of the file corresponding to source code location | |
| 939 LOCATION. | |
| 940 | |
| 941 If LOCATION is the location of a token that is part of the | |
| 942 replacement-list of a macro expansion return the file path of the | |
| 943 macro expansion point. | |
| 944 | |
| 945 SET is the line map set LOCATION comes from. */ | |
| 145 | 946 const char* linemap_get_expansion_filename (class line_maps *, |
| 947 location_t); | |
| 111 | 948 |
|
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949 #ifdef __cplusplus |
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950 } |
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951 #endif |
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952 |
| 0 | 953 #endif /* ! LIBCPP_INTERNAL_H */ |