1 /* Definitions for CPP library. 2 Copyright (C) 1995-2017 Free Software Foundation, Inc. 3 Written by Per Bothner, 1994-95. 4 5 This program is free software; you can redistribute it and/or modify it 6 under the terms of the GNU General Public License as published by the 7 Free Software Foundation; either version 3, or (at your option) any 8 later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; see the file COPYING3. If not see 17 <http://www.gnu.org/licenses/>. 18 19 In other words, you are welcome to use, share and improve this program. 20 You are forbidden to forbid anyone else to use, share and improve 21 what you give them. Help stamp out software-hoarding! */ 22 #ifndef LIBCPP_CPPLIB_H 23 #define LIBCPP_CPPLIB_H 24 25 #include <sys/types.h> 26 #include "symtab.h" 27 #include "line-map.h" 28 29 typedef struct cpp_reader cpp_reader; 30 typedef struct cpp_buffer cpp_buffer; 31 typedef struct cpp_options cpp_options; 32 typedef struct cpp_token cpp_token; 33 typedef struct cpp_string cpp_string; 34 typedef struct cpp_hashnode cpp_hashnode; 35 typedef struct cpp_macro cpp_macro; 36 typedef struct cpp_callbacks cpp_callbacks; 37 typedef struct cpp_dir cpp_dir; 38 39 struct answer; 40 struct _cpp_file; 41 42 /* The first three groups, apart from '=', can appear in preprocessor 43 expressions (+= and -= are used to indicate unary + and - resp.). 44 This allows a lookup table to be implemented in _cpp_parse_expr. 45 46 The first group, to CPP_LAST_EQ, can be immediately followed by an 47 '='. The lexer needs operators ending in '=', like ">>=", to be in 48 the same order as their counterparts without the '=', like ">>". 49 50 See the cpp_operator table optab in expr.c if you change the order or 51 add or remove anything in the first group. */ 52 53 #define TTYPE_TABLE \ 54 OP(EQ, "=") \ 55 OP(NOT, "!") \ 56 OP(GREATER, ">") /* compare */ \ 57 OP(LESS, "<") \ 58 OP(PLUS, "+") /* math */ \ 59 OP(MINUS, "-") \ 60 OP(MULT, "*") \ 61 OP(DIV, "/") \ 62 OP(MOD, "%") \ 63 OP(AND, "&") /* bit ops */ \ 64 OP(OR, "|") \ 65 OP(XOR, "^") \ 66 OP(RSHIFT, ">>") \ 67 OP(LSHIFT, "<<") \ 68 \ 69 OP(COMPL, "~") \ 70 OP(AND_AND, "&&") /* logical */ \ 71 OP(OR_OR, "||") \ 72 OP(QUERY, "?") \ 73 OP(COLON, ":") \ 74 OP(COMMA, ",") /* grouping */ \ 75 OP(OPEN_PAREN, "(") \ 76 OP(CLOSE_PAREN, ")") \ 77 TK(EOF, NONE) \ 78 OP(EQ_EQ, "==") /* compare */ \ 79 OP(NOT_EQ, "!=") \ 80 OP(GREATER_EQ, ">=") \ 81 OP(LESS_EQ, "<=") \ 82 \ 83 /* These two are unary + / - in preprocessor expressions. */ \ 84 OP(PLUS_EQ, "+=") /* math */ \ 85 OP(MINUS_EQ, "-=") \ 86 \ 87 OP(MULT_EQ, "*=") \ 88 OP(DIV_EQ, "/=") \ 89 OP(MOD_EQ, "%=") \ 90 OP(AND_EQ, "&=") /* bit ops */ \ 91 OP(OR_EQ, "|=") \ 92 OP(XOR_EQ, "^=") \ 93 OP(RSHIFT_EQ, ">>=") \ 94 OP(LSHIFT_EQ, "<<=") \ 95 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \ 96 OP(HASH, "#") /* digraphs */ \ 97 OP(PASTE, "##") \ 98 OP(OPEN_SQUARE, "[") \ 99 OP(CLOSE_SQUARE, "]") \ 100 OP(OPEN_BRACE, "{") \ 101 OP(CLOSE_BRACE, "}") \ 102 /* The remainder of the punctuation. Order is not significant. */ \ 103 OP(SEMICOLON, ";") /* structure */ \ 104 OP(ELLIPSIS, "...") \ 105 OP(PLUS_PLUS, "++") /* increment */ \ 106 OP(MINUS_MINUS, "--") \ 107 OP(DEREF, "->") /* accessors */ \ 108 OP(DOT, ".") \ 109 OP(SCOPE, "::") \ 110 OP(DEREF_STAR, "->*") \ 111 OP(DOT_STAR, ".*") \ 112 OP(ATSIGN, "@") /* used in Objective-C */ \ 113 \ 114 TK(NAME, IDENT) /* word */ \ 115 TK(AT_NAME, IDENT) /* @word - Objective-C */ \ 116 TK(NUMBER, LITERAL) /* 34_be+ta */ \ 117 \ 118 TK(CHAR, LITERAL) /* 'char' */ \ 119 TK(WCHAR, LITERAL) /* L'char' */ \ 120 TK(CHAR16, LITERAL) /* u'char' */ \ 121 TK(CHAR32, LITERAL) /* U'char' */ \ 122 TK(UTF8CHAR, LITERAL) /* u8'char' */ \ 123 TK(OTHER, LITERAL) /* stray punctuation */ \ 124 \ 125 TK(STRING, LITERAL) /* "string" */ \ 126 TK(WSTRING, LITERAL) /* L"string" */ \ 127 TK(STRING16, LITERAL) /* u"string" */ \ 128 TK(STRING32, LITERAL) /* U"string" */ \ 129 TK(UTF8STRING, LITERAL) /* u8"string" */ \ 130 TK(OBJC_STRING, LITERAL) /* @"string" - Objective-C */ \ 131 TK(HEADER_NAME, LITERAL) /* <stdio.h> in #include */ \ 132 \ 133 TK(CHAR_USERDEF, LITERAL) /* 'char'_suffix - C++-0x */ \ 134 TK(WCHAR_USERDEF, LITERAL) /* L'char'_suffix - C++-0x */ \ 135 TK(CHAR16_USERDEF, LITERAL) /* u'char'_suffix - C++-0x */ \ 136 TK(CHAR32_USERDEF, LITERAL) /* U'char'_suffix - C++-0x */ \ 137 TK(UTF8CHAR_USERDEF, LITERAL) /* u8'char'_suffix - C++-0x */ \ 138 TK(STRING_USERDEF, LITERAL) /* "string"_suffix - C++-0x */ \ 139 TK(WSTRING_USERDEF, LITERAL) /* L"string"_suffix - C++-0x */ \ 140 TK(STRING16_USERDEF, LITERAL) /* u"string"_suffix - C++-0x */ \ 141 TK(STRING32_USERDEF, LITERAL) /* U"string"_suffix - C++-0x */ \ 142 TK(UTF8STRING_USERDEF,LITERAL) /* u8"string"_suffix - C++-0x */ \ 143 \ 144 TK(COMMENT, LITERAL) /* Only if output comments. */ \ 145 /* SPELL_LITERAL happens to DTRT. */ \ 146 TK(MACRO_ARG, NONE) /* Macro argument. */ \ 147 TK(PRAGMA, NONE) /* Only for deferred pragmas. */ \ 148 TK(PRAGMA_EOL, NONE) /* End-of-line for deferred pragmas. */ \ 149 TK(PADDING, NONE) /* Whitespace for -E. */ 150 151 #define OP(e, s) CPP_ ## e, 152 #define TK(e, s) CPP_ ## e, 153 enum cpp_ttype 154 { 155 TTYPE_TABLE 156 N_TTYPES, 157 158 /* A token type for keywords, as opposed to ordinary identifiers. */ 159 CPP_KEYWORD, 160 161 /* Positions in the table. */ 162 CPP_LAST_EQ = CPP_LSHIFT, 163 CPP_FIRST_DIGRAPH = CPP_HASH, 164 CPP_LAST_PUNCTUATOR= CPP_ATSIGN, 165 CPP_LAST_CPP_OP = CPP_LESS_EQ 166 }; 167 #undef OP 168 #undef TK 169 170 /* C language kind, used when calling cpp_create_reader. */ 171 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_GNUC11, 172 CLK_STDC89, CLK_STDC94, CLK_STDC99, CLK_STDC11, 173 CLK_GNUCXX, CLK_CXX98, CLK_GNUCXX11, CLK_CXX11, 174 CLK_GNUCXX14, CLK_CXX14, CLK_GNUCXX1Z, CLK_CXX1Z, CLK_ASM}; 175 176 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */ 177 struct GTY(()) cpp_string { 178 unsigned int len; 179 const unsigned char *text; 180 }; 181 182 /* Flags for the cpp_token structure. */ 183 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */ 184 #define DIGRAPH (1 << 1) /* If it was a digraph. */ 185 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */ 186 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */ 187 #define NAMED_OP (1 << 4) /* C++ named operators. */ 188 #define PREV_FALLTHROUGH (1 << 5) /* On a token preceeded by FALLTHROUGH 189 comment. */ 190 #define BOL (1 << 6) /* Token at beginning of line. */ 191 #define PURE_ZERO (1 << 7) /* Single 0 digit, used by the C++ frontend, 192 set in c-lex.c. */ 193 #define SP_DIGRAPH (1 << 8) /* # or ## token was a digraph. */ 194 #define SP_PREV_WHITE (1 << 9) /* If whitespace before a ## 195 operator, or before this token 196 after a # operator. */ 197 #define NO_EXPAND (1 << 10) /* Do not macro-expand this token. */ 198 199 /* Specify which field, if any, of the cpp_token union is used. */ 200 201 enum cpp_token_fld_kind { 202 CPP_TOKEN_FLD_NODE, 203 CPP_TOKEN_FLD_SOURCE, 204 CPP_TOKEN_FLD_STR, 205 CPP_TOKEN_FLD_ARG_NO, 206 CPP_TOKEN_FLD_TOKEN_NO, 207 CPP_TOKEN_FLD_PRAGMA, 208 CPP_TOKEN_FLD_NONE 209 }; 210 211 /* A macro argument in the cpp_token union. */ 212 struct GTY(()) cpp_macro_arg { 213 /* Argument number. */ 214 unsigned int arg_no; 215 /* The original spelling of the macro argument token. */ 216 cpp_hashnode * 217 GTY ((nested_ptr (union tree_node, 218 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 219 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) 220 spelling; 221 }; 222 223 /* An identifier in the cpp_token union. */ 224 struct GTY(()) cpp_identifier { 225 /* The canonical (UTF-8) spelling of the identifier. */ 226 cpp_hashnode * 227 GTY ((nested_ptr (union tree_node, 228 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 229 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) 230 node; 231 /* The original spelling of the identifier. */ 232 cpp_hashnode * 233 GTY ((nested_ptr (union tree_node, 234 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 235 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) 236 spelling; 237 }; 238 239 /* A preprocessing token. This has been carefully packed and should 240 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */ 241 struct GTY(()) cpp_token { 242 source_location src_loc; /* Location of first char of token, 243 together with range of full token. */ 244 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */ 245 unsigned short flags; /* flags - see above */ 246 247 union cpp_token_u 248 { 249 /* An identifier. */ 250 struct cpp_identifier GTY ((tag ("CPP_TOKEN_FLD_NODE"))) node; 251 252 /* Inherit padding from this token. */ 253 cpp_token * GTY ((tag ("CPP_TOKEN_FLD_SOURCE"))) source; 254 255 /* A string, or number. */ 256 struct cpp_string GTY ((tag ("CPP_TOKEN_FLD_STR"))) str; 257 258 /* Argument no. (and original spelling) for a CPP_MACRO_ARG. */ 259 struct cpp_macro_arg GTY ((tag ("CPP_TOKEN_FLD_ARG_NO"))) macro_arg; 260 261 /* Original token no. for a CPP_PASTE (from a sequence of 262 consecutive paste tokens in a macro expansion). */ 263 unsigned int GTY ((tag ("CPP_TOKEN_FLD_TOKEN_NO"))) token_no; 264 265 /* Caller-supplied identifier for a CPP_PRAGMA. */ 266 unsigned int GTY ((tag ("CPP_TOKEN_FLD_PRAGMA"))) pragma; 267 } GTY ((desc ("cpp_token_val_index (&%1)"))) val; 268 }; 269 270 /* Say which field is in use. */ 271 extern enum cpp_token_fld_kind cpp_token_val_index (const cpp_token *tok); 272 273 /* A type wide enough to hold any multibyte source character. 274 cpplib's character constant interpreter requires an unsigned type. 275 Also, a typedef for the signed equivalent. 276 The width of this type is capped at 32 bits; there do exist targets 277 where wchar_t is 64 bits, but only in a non-default mode, and there 278 would be no meaningful interpretation for a wchar_t value greater 279 than 2^32 anyway -- the widest wide-character encoding around is 280 ISO 10646, which stops at 2^31. */ 281 #if CHAR_BIT * SIZEOF_INT >= 32 282 # define CPPCHAR_SIGNED_T int 283 #elif CHAR_BIT * SIZEOF_LONG >= 32 284 # define CPPCHAR_SIGNED_T long 285 #else 286 # error "Cannot find a least-32-bit signed integer type" 287 #endif 288 typedef unsigned CPPCHAR_SIGNED_T cppchar_t; 289 typedef CPPCHAR_SIGNED_T cppchar_signed_t; 290 291 /* Style of header dependencies to generate. */ 292 enum cpp_deps_style { DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM }; 293 294 /* The possible normalization levels, from most restrictive to least. */ 295 enum cpp_normalize_level { 296 /* In NFKC. */ 297 normalized_KC = 0, 298 /* In NFC. */ 299 normalized_C, 300 /* In NFC, except for subsequences where being in NFC would make 301 the identifier invalid. */ 302 normalized_identifier_C, 303 /* Not normalized at all. */ 304 normalized_none 305 }; 306 307 /* This structure is nested inside struct cpp_reader, and 308 carries all the options visible to the command line. */ 309 struct cpp_options 310 { 311 /* Characters between tab stops. */ 312 unsigned int tabstop; 313 314 /* The language we're preprocessing. */ 315 enum c_lang lang; 316 317 /* Nonzero means use extra default include directories for C++. */ 318 unsigned char cplusplus; 319 320 /* Nonzero means handle cplusplus style comments. */ 321 unsigned char cplusplus_comments; 322 323 /* Nonzero means define __OBJC__, treat @ as a special token, use 324 the OBJC[PLUS]_INCLUDE_PATH environment variable, and allow 325 "#import". */ 326 unsigned char objc; 327 328 /* Nonzero means don't copy comments into the output file. */ 329 unsigned char discard_comments; 330 331 /* Nonzero means don't copy comments into the output file during 332 macro expansion. */ 333 unsigned char discard_comments_in_macro_exp; 334 335 /* Nonzero means process the ISO trigraph sequences. */ 336 unsigned char trigraphs; 337 338 /* Nonzero means process the ISO digraph sequences. */ 339 unsigned char digraphs; 340 341 /* Nonzero means to allow hexadecimal floats and LL suffixes. */ 342 unsigned char extended_numbers; 343 344 /* Nonzero means process u/U prefix literals (UTF-16/32). */ 345 unsigned char uliterals; 346 347 /* Nonzero means process u8 prefixed character literals (UTF-8). */ 348 unsigned char utf8_char_literals; 349 350 /* Nonzero means process r/R raw strings. If this is set, uliterals 351 must be set as well. */ 352 unsigned char rliterals; 353 354 /* Nonzero means print names of header files (-H). */ 355 unsigned char print_include_names; 356 357 /* Nonzero means complain about deprecated features. */ 358 unsigned char cpp_warn_deprecated; 359 360 /* Nonzero means warn if slash-star appears in a comment. */ 361 unsigned char warn_comments; 362 363 /* Nonzero means to warn about __DATA__, __TIME__ and __TIMESTAMP__ usage. */ 364 unsigned char warn_date_time; 365 366 /* Nonzero means warn if a user-supplied include directory does not 367 exist. */ 368 unsigned char warn_missing_include_dirs; 369 370 /* Nonzero means warn if there are any trigraphs. */ 371 unsigned char warn_trigraphs; 372 373 /* Nonzero means warn about multicharacter charconsts. */ 374 unsigned char warn_multichar; 375 376 /* Nonzero means warn about various incompatibilities with 377 traditional C. */ 378 unsigned char cpp_warn_traditional; 379 380 /* Nonzero means warn about long long numeric constants. */ 381 unsigned char cpp_warn_long_long; 382 383 /* Nonzero means warn about text after an #endif (or #else). */ 384 unsigned char warn_endif_labels; 385 386 /* Nonzero means warn about implicit sign changes owing to integer 387 promotions. */ 388 unsigned char warn_num_sign_change; 389 390 /* Zero means don't warn about __VA_ARGS__ usage in c89 pedantic mode. 391 Presumably the usage is protected by the appropriate #ifdef. */ 392 unsigned char warn_variadic_macros; 393 394 /* Nonzero means warn about builtin macros that are redefined or 395 explicitly undefined. */ 396 unsigned char warn_builtin_macro_redefined; 397 398 /* Different -Wimplicit-fallthrough= levels. */ 399 unsigned char cpp_warn_implicit_fallthrough; 400 401 /* Nonzero means we should look for header.gcc files that remap file 402 names. */ 403 unsigned char remap; 404 405 /* Zero means dollar signs are punctuation. */ 406 unsigned char dollars_in_ident; 407 408 /* Nonzero means UCNs are accepted in identifiers. */ 409 unsigned char extended_identifiers; 410 411 /* True if we should warn about dollars in identifiers or numbers 412 for this translation unit. */ 413 unsigned char warn_dollars; 414 415 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */ 416 unsigned char warn_undef; 417 418 /* Nonzero means warn if "defined" is encountered in a place other than 419 an #if. */ 420 unsigned char warn_expansion_to_defined; 421 422 /* Nonzero means warn of unused macros from the main file. */ 423 unsigned char warn_unused_macros; 424 425 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */ 426 unsigned char c99; 427 428 /* Nonzero if we are conforming to a specific C or C++ standard. */ 429 unsigned char std; 430 431 /* Nonzero means give all the error messages the ANSI standard requires. */ 432 unsigned char cpp_pedantic; 433 434 /* Nonzero means we're looking at already preprocessed code, so don't 435 bother trying to do macro expansion and whatnot. */ 436 unsigned char preprocessed; 437 438 /* Nonzero means we are going to emit debugging logs during 439 preprocessing. */ 440 unsigned char debug; 441 442 /* Nonzero means we are tracking locations of tokens involved in 443 macro expansion. 1 Means we track the location in degraded mode 444 where we do not track locations of tokens resulting from the 445 expansion of arguments of function-like macro. 2 Means we do 446 track all macro expansions. This last option is the one that 447 consumes the highest amount of memory. */ 448 unsigned char track_macro_expansion; 449 450 /* Nonzero means handle C++ alternate operator names. */ 451 unsigned char operator_names; 452 453 /* Nonzero means warn about use of C++ alternate operator names. */ 454 unsigned char warn_cxx_operator_names; 455 456 /* True for traditional preprocessing. */ 457 unsigned char traditional; 458 459 /* Nonzero for C++ 2011 Standard user-defined literals. */ 460 unsigned char user_literals; 461 462 /* Nonzero means warn when a string or character literal is followed by a 463 ud-suffix which does not beging with an underscore. */ 464 unsigned char warn_literal_suffix; 465 466 /* Nonzero means interpret imaginary, fixed-point, or other gnu extension 467 literal number suffixes as user-defined literal number suffixes. */ 468 unsigned char ext_numeric_literals; 469 470 /* Nonzero means extended identifiers allow the characters specified 471 in C11 and C++11. */ 472 unsigned char c11_identifiers; 473 474 /* Nonzero for C++ 2014 Standard binary constants. */ 475 unsigned char binary_constants; 476 477 /* Nonzero for C++ 2014 Standard digit separators. */ 478 unsigned char digit_separators; 479 480 /* Holds the name of the target (execution) character set. */ 481 const char *narrow_charset; 482 483 /* Holds the name of the target wide character set. */ 484 const char *wide_charset; 485 486 /* Holds the name of the input character set. */ 487 const char *input_charset; 488 489 /* The minimum permitted level of normalization before a warning 490 is generated. See enum cpp_normalize_level. */ 491 int warn_normalize; 492 493 /* True to warn about precompiled header files we couldn't use. */ 494 bool warn_invalid_pch; 495 496 /* True if dependencies should be restored from a precompiled header. */ 497 bool restore_pch_deps; 498 499 /* True if warn about differences between C90 and C99. */ 500 signed char cpp_warn_c90_c99_compat; 501 502 /* True if warn about differences between C++98 and C++11. */ 503 bool cpp_warn_cxx11_compat; 504 505 /* Dependency generation. */ 506 struct 507 { 508 /* Style of header dependencies to generate. */ 509 enum cpp_deps_style style; 510 511 /* Assume missing files are generated files. */ 512 bool missing_files; 513 514 /* Generate phony targets for each dependency apart from the first 515 one. */ 516 bool phony_targets; 517 518 /* If true, no dependency is generated on the main file. */ 519 bool ignore_main_file; 520 521 /* If true, intend to use the preprocessor output (e.g., for compilation) 522 in addition to the dependency info. */ 523 bool need_preprocessor_output; 524 } deps; 525 526 /* Target-specific features set by the front end or client. */ 527 528 /* Precision for target CPP arithmetic, target characters, target 529 ints and target wide characters, respectively. */ 530 size_t precision, char_precision, int_precision, wchar_precision; 531 532 /* True means chars (wide chars) are unsigned. */ 533 bool unsigned_char, unsigned_wchar; 534 535 /* True if the most significant byte in a word has the lowest 536 address in memory. */ 537 bool bytes_big_endian; 538 539 /* Nonzero means __STDC__ should have the value 0 in system headers. */ 540 unsigned char stdc_0_in_system_headers; 541 542 /* True disables tokenization outside of preprocessing directives. */ 543 bool directives_only; 544 545 /* True enables canonicalization of system header file paths. */ 546 bool canonical_system_headers; 547 }; 548 549 /* Callback for header lookup for HEADER, which is the name of a 550 source file. It is used as a method of last resort to find headers 551 that are not otherwise found during the normal include processing. 552 The return value is the malloced name of a header to try and open, 553 if any, or NULL otherwise. This callback is called only if the 554 header is otherwise unfound. */ 555 typedef const char *(*missing_header_cb)(cpp_reader *, const char *header, cpp_dir **); 556 557 /* Call backs to cpplib client. */ 558 struct cpp_callbacks 559 { 560 /* Called when a new line of preprocessed output is started. */ 561 void (*line_change) (cpp_reader *, const cpp_token *, int); 562 563 /* Called when switching to/from a new file. 564 The line_map is for the new file. It is NULL if there is no new file. 565 (In C this happens when done with <built-in>+<command line> and also 566 when done with a main file.) This can be used for resource cleanup. */ 567 void (*file_change) (cpp_reader *, const line_map_ordinary *); 568 569 void (*dir_change) (cpp_reader *, const char *); 570 void (*include) (cpp_reader *, source_location, const unsigned char *, 571 const char *, int, const cpp_token **); 572 void (*define) (cpp_reader *, source_location, cpp_hashnode *); 573 void (*undef) (cpp_reader *, source_location, cpp_hashnode *); 574 void (*ident) (cpp_reader *, source_location, const cpp_string *); 575 void (*def_pragma) (cpp_reader *, source_location); 576 int (*valid_pch) (cpp_reader *, const char *, int); 577 void (*read_pch) (cpp_reader *, const char *, int, const char *); 578 missing_header_cb missing_header; 579 580 /* Context-sensitive macro support. Returns macro (if any) that should 581 be expanded. */ 582 cpp_hashnode * (*macro_to_expand) (cpp_reader *, const cpp_token *); 583 584 /* Called to emit a diagnostic. This callback receives the 585 translated message. */ 586 bool (*error) (cpp_reader *, int, int, rich_location *, 587 const char *, va_list *) 588 ATTRIBUTE_FPTR_PRINTF(5,0); 589 590 /* Callbacks for when a macro is expanded, or tested (whether 591 defined or not at the time) in #ifdef, #ifndef or "defined". */ 592 void (*used_define) (cpp_reader *, source_location, cpp_hashnode *); 593 void (*used_undef) (cpp_reader *, source_location, cpp_hashnode *); 594 /* Called before #define and #undef or other macro definition 595 changes are processed. */ 596 void (*before_define) (cpp_reader *); 597 /* Called whenever a macro is expanded or tested. 598 Second argument is the location of the start of the current expansion. */ 599 void (*used) (cpp_reader *, source_location, cpp_hashnode *); 600 601 /* Callback to identify whether an attribute exists. */ 602 int (*has_attribute) (cpp_reader *); 603 604 /* Callback that can change a user builtin into normal macro. */ 605 bool (*user_builtin_macro) (cpp_reader *, cpp_hashnode *); 606 607 /* Callback to parse SOURCE_DATE_EPOCH from environment. */ 608 time_t (*get_source_date_epoch) (cpp_reader *); 609 610 /* Callback for providing suggestions for misspelled directives. */ 611 const char *(*get_suggestion) (cpp_reader *, const char *, const char *const *); 612 }; 613 614 #ifdef VMS 615 #define INO_T_CPP ino_t ino[3] 616 #else 617 #define INO_T_CPP ino_t ino 618 #endif 619 620 /* Chain of directories to look for include files in. */ 621 struct cpp_dir 622 { 623 /* NULL-terminated singly-linked list. */ 624 struct cpp_dir *next; 625 626 /* NAME of the directory, NUL-terminated. */ 627 char *name; 628 unsigned int len; 629 630 /* One if a system header, two if a system header that has extern 631 "C" guards for C++. */ 632 unsigned char sysp; 633 634 /* Is this a user-supplied directory? */ 635 bool user_supplied_p; 636 637 /* The canonicalized NAME as determined by lrealpath. This field 638 is only used by hosts that lack reliable inode numbers. */ 639 char *canonical_name; 640 641 /* Mapping of file names for this directory for MS-DOS and related 642 platforms. A NULL-terminated array of (from, to) pairs. */ 643 const char **name_map; 644 645 /* Routine to construct pathname, given the search path name and the 646 HEADER we are trying to find, return a constructed pathname to 647 try and open. If this is NULL, the constructed pathname is as 648 constructed by append_file_to_dir. */ 649 char *(*construct) (const char *header, cpp_dir *dir); 650 651 /* The C front end uses these to recognize duplicated 652 directories in the search path. */ 653 INO_T_CPP; 654 dev_t dev; 655 }; 656 657 /* The structure of a node in the hash table. The hash table has 658 entries for all identifiers: either macros defined by #define 659 commands (type NT_MACRO), assertions created with #assert 660 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros 661 like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are 662 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an 663 identifier that behaves like an operator such as "xor". 664 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a 665 diagnostic may be required for this node. Currently this only 666 applies to __VA_ARGS__, poisoned identifiers, and -Wc++-compat 667 warnings about NODE_OPERATOR. */ 668 669 /* Hash node flags. */ 670 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */ 671 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */ 672 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */ 673 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */ 674 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */ 675 #define NODE_DISABLED (1 << 5) /* A disabled macro. */ 676 #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */ 677 #define NODE_USED (1 << 7) /* Dumped with -dU. */ 678 #define NODE_CONDITIONAL (1 << 8) /* Conditional macro */ 679 #define NODE_WARN_OPERATOR (1 << 9) /* Warn about C++ named operator. */ 680 681 /* Different flavors of hash node. */ 682 enum node_type 683 { 684 NT_VOID = 0, /* No definition yet. */ 685 NT_MACRO, /* A macro of some form. */ 686 NT_ASSERTION /* Predicate for #assert. */ 687 }; 688 689 /* Different flavors of builtin macro. _Pragma is an operator, but we 690 handle it with the builtin code for efficiency reasons. */ 691 enum cpp_builtin_type 692 { 693 BT_SPECLINE = 0, /* `__LINE__' */ 694 BT_DATE, /* `__DATE__' */ 695 BT_FILE, /* `__FILE__' */ 696 BT_BASE_FILE, /* `__BASE_FILE__' */ 697 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ 698 BT_TIME, /* `__TIME__' */ 699 BT_STDC, /* `__STDC__' */ 700 BT_PRAGMA, /* `_Pragma' operator */ 701 BT_TIMESTAMP, /* `__TIMESTAMP__' */ 702 BT_COUNTER, /* `__COUNTER__' */ 703 BT_HAS_ATTRIBUTE, /* `__has_attribute__(x)' */ 704 BT_FIRST_USER, /* User defined builtin macros. */ 705 BT_LAST_USER = BT_FIRST_USER + 63 706 }; 707 708 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE)) 709 #define HT_NODE(NODE) ((ht_identifier *) (NODE)) 710 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident) 711 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident) 712 713 /* Specify which field, if any, of the union is used. */ 714 715 enum { 716 NTV_MACRO, 717 NTV_ANSWER, 718 NTV_BUILTIN, 719 NTV_ARGUMENT, 720 NTV_NONE 721 }; 722 723 #define CPP_HASHNODE_VALUE_IDX(HNODE) \ 724 ((HNODE.flags & NODE_MACRO_ARG) ? NTV_ARGUMENT \ 725 : HNODE.type == NT_MACRO ? ((HNODE.flags & NODE_BUILTIN) \ 726 ? NTV_BUILTIN : NTV_MACRO) \ 727 : HNODE.type == NT_ASSERTION ? NTV_ANSWER \ 728 : NTV_NONE) 729 730 /* The common part of an identifier node shared amongst all 3 C front 731 ends. Also used to store CPP identifiers, which are a superset of 732 identifiers in the grammatical sense. */ 733 734 union GTY(()) _cpp_hashnode_value { 735 /* If a macro. */ 736 cpp_macro * GTY((tag ("NTV_MACRO"))) macro; 737 /* Answers to an assertion. */ 738 struct answer * GTY ((tag ("NTV_ANSWER"))) answers; 739 /* Code for a builtin macro. */ 740 enum cpp_builtin_type GTY ((tag ("NTV_BUILTIN"))) builtin; 741 /* Macro argument index. */ 742 unsigned short GTY ((tag ("NTV_ARGUMENT"))) arg_index; 743 }; 744 745 struct GTY(()) cpp_hashnode { 746 struct ht_identifier ident; 747 unsigned int is_directive : 1; 748 unsigned int directive_index : 7; /* If is_directive, 749 then index into directive table. 750 Otherwise, a NODE_OPERATOR. */ 751 unsigned char rid_code; /* Rid code - for front ends. */ 752 ENUM_BITFIELD(node_type) type : 6; /* CPP node type. */ 753 unsigned int flags : 10; /* CPP flags. */ 754 755 union _cpp_hashnode_value GTY ((desc ("CPP_HASHNODE_VALUE_IDX (%1)"))) value; 756 }; 757 758 /* A class for iterating through the source locations within a 759 string token (before escapes are interpreted, and before 760 concatenation). */ 761 762 class cpp_string_location_reader { 763 public: 764 cpp_string_location_reader (source_location src_loc, 765 line_maps *line_table); 766 767 source_range get_next (); 768 769 private: 770 source_location m_loc; 771 int m_offset_per_column; 772 line_maps *m_line_table; 773 }; 774 775 /* A class for storing the source ranges of all of the characters within 776 a string literal, after escapes are interpreted, and after 777 concatenation. 778 779 This is not GTY-marked, as instances are intended to be temporary. */ 780 781 class cpp_substring_ranges 782 { 783 public: 784 cpp_substring_ranges (); 785 ~cpp_substring_ranges (); 786 787 int get_num_ranges () const { return m_num_ranges; } 788 source_range get_range (int idx) const 789 { 790 linemap_assert (idx < m_num_ranges); 791 return m_ranges[idx]; 792 } 793 794 void add_range (source_range range); 795 void add_n_ranges (int num, cpp_string_location_reader &loc_reader); 796 797 private: 798 source_range *m_ranges; 799 int m_num_ranges; 800 int m_alloc_ranges; 801 }; 802 803 /* Call this first to get a handle to pass to other functions. 804 805 If you want cpplib to manage its own hashtable, pass in a NULL 806 pointer. Otherwise you should pass in an initialized hash table 807 that cpplib will share; this technique is used by the C front 808 ends. */ 809 extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *, 810 struct line_maps *); 811 812 /* Reset the cpp_reader's line_map. This is only used after reading a 813 PCH file. */ 814 extern void cpp_set_line_map (cpp_reader *, struct line_maps *); 815 816 /* Call this to change the selected language standard (e.g. because of 817 command line options). */ 818 extern void cpp_set_lang (cpp_reader *, enum c_lang); 819 820 /* Set the include paths. */ 821 extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int); 822 823 /* Provide src:dst pair for __FILE__ remapping. */ 824 extern void add_cpp_remap_path (const char *); 825 826 /* Call these to get pointers to the options, callback, and deps 827 structures for a given reader. These pointers are good until you 828 call cpp_finish on that reader. You can either edit the callbacks 829 through the pointer returned from cpp_get_callbacks, or set them 830 with cpp_set_callbacks. */ 831 extern cpp_options *cpp_get_options (cpp_reader *); 832 extern cpp_callbacks *cpp_get_callbacks (cpp_reader *); 833 extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *); 834 extern struct deps *cpp_get_deps (cpp_reader *); 835 836 /* This function reads the file, but does not start preprocessing. It 837 returns the name of the original file; this is the same as the 838 input file, except for preprocessed input. This will generate at 839 least one file change callback, and possibly a line change callback 840 too. If there was an error opening the file, it returns NULL. */ 841 extern const char *cpp_read_main_file (cpp_reader *, const char *); 842 843 /* Set up built-ins with special behavior. Use cpp_init_builtins() 844 instead unless your know what you are doing. */ 845 extern void cpp_init_special_builtins (cpp_reader *); 846 847 /* Set up built-ins like __FILE__. */ 848 extern void cpp_init_builtins (cpp_reader *, int); 849 850 /* This is called after options have been parsed, and partially 851 processed. */ 852 extern void cpp_post_options (cpp_reader *); 853 854 /* Set up translation to the target character set. */ 855 extern void cpp_init_iconv (cpp_reader *); 856 857 /* Call this to finish preprocessing. If you requested dependency 858 generation, pass an open stream to write the information to, 859 otherwise NULL. It is your responsibility to close the stream. */ 860 extern void cpp_finish (cpp_reader *, FILE *deps_stream); 861 862 /* Call this to release the handle at the end of preprocessing. Any 863 use of the handle after this function returns is invalid. */ 864 extern void cpp_destroy (cpp_reader *); 865 866 extern unsigned int cpp_token_len (const cpp_token *); 867 extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *); 868 extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *, 869 unsigned char *, bool); 870 extern void cpp_register_pragma (cpp_reader *, const char *, const char *, 871 void (*) (cpp_reader *), bool); 872 extern void cpp_register_deferred_pragma (cpp_reader *, const char *, 873 const char *, unsigned, bool, bool); 874 extern int cpp_avoid_paste (cpp_reader *, const cpp_token *, 875 const cpp_token *); 876 extern const cpp_token *cpp_get_token (cpp_reader *); 877 extern const cpp_token *cpp_get_token_with_location (cpp_reader *, 878 source_location *); 879 extern bool cpp_fun_like_macro_p (cpp_hashnode *); 880 extern const unsigned char *cpp_macro_definition (cpp_reader *, 881 cpp_hashnode *); 882 extern void _cpp_backup_tokens (cpp_reader *, unsigned int); 883 extern const cpp_token *cpp_peek_token (cpp_reader *, int); 884 885 /* Evaluate a CPP_*CHAR* token. */ 886 extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *, 887 unsigned int *, int *); 888 /* Evaluate a vector of CPP_*STRING* tokens. */ 889 extern bool cpp_interpret_string (cpp_reader *, 890 const cpp_string *, size_t, 891 cpp_string *, enum cpp_ttype); 892 extern const char *cpp_interpret_string_ranges (cpp_reader *pfile, 893 const cpp_string *from, 894 cpp_string_location_reader *, 895 size_t count, 896 cpp_substring_ranges *out, 897 enum cpp_ttype type); 898 extern bool cpp_interpret_string_notranslate (cpp_reader *, 899 const cpp_string *, size_t, 900 cpp_string *, enum cpp_ttype); 901 902 /* Convert a host character constant to the execution character set. */ 903 extern cppchar_t cpp_host_to_exec_charset (cpp_reader *, cppchar_t); 904 905 /* Used to register macros and assertions, perhaps from the command line. 906 The text is the same as the command line argument. */ 907 extern void cpp_define (cpp_reader *, const char *); 908 extern void cpp_define_formatted (cpp_reader *pfile, 909 const char *fmt, ...) ATTRIBUTE_PRINTF_2; 910 extern void cpp_assert (cpp_reader *, const char *); 911 extern void cpp_undef (cpp_reader *, const char *); 912 extern void cpp_unassert (cpp_reader *, const char *); 913 914 /* Undefine all macros and assertions. */ 915 extern void cpp_undef_all (cpp_reader *); 916 917 extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *, 918 size_t, int); 919 extern int cpp_defined (cpp_reader *, const unsigned char *, int); 920 921 /* A preprocessing number. Code assumes that any unused high bits of 922 the double integer are set to zero. */ 923 924 /* This type has to be equal to unsigned HOST_WIDE_INT, see 925 gcc/c-family/c-lex.c. */ 926 typedef uint64_t cpp_num_part; 927 typedef struct cpp_num cpp_num; 928 struct cpp_num 929 { 930 cpp_num_part high; 931 cpp_num_part low; 932 bool unsignedp; /* True if value should be treated as unsigned. */ 933 bool overflow; /* True if the most recent calculation overflowed. */ 934 }; 935 936 /* cpplib provides two interfaces for interpretation of preprocessing 937 numbers. 938 939 cpp_classify_number categorizes numeric constants according to 940 their field (integer, floating point, or invalid), radix (decimal, 941 octal, hexadecimal), and type suffixes. */ 942 943 #define CPP_N_CATEGORY 0x000F 944 #define CPP_N_INVALID 0x0000 945 #define CPP_N_INTEGER 0x0001 946 #define CPP_N_FLOATING 0x0002 947 948 #define CPP_N_WIDTH 0x00F0 949 #define CPP_N_SMALL 0x0010 /* int, float, short _Fract/Accum */ 950 #define CPP_N_MEDIUM 0x0020 /* long, double, long _Fract/_Accum. */ 951 #define CPP_N_LARGE 0x0040 /* long long, long double, 952 long long _Fract/Accum. */ 953 954 #define CPP_N_WIDTH_MD 0xF0000 /* machine defined. */ 955 #define CPP_N_MD_W 0x10000 956 #define CPP_N_MD_Q 0x20000 957 958 #define CPP_N_RADIX 0x0F00 959 #define CPP_N_DECIMAL 0x0100 960 #define CPP_N_HEX 0x0200 961 #define CPP_N_OCTAL 0x0400 962 #define CPP_N_BINARY 0x0800 963 964 #define CPP_N_UNSIGNED 0x1000 /* Properties. */ 965 #define CPP_N_IMAGINARY 0x2000 966 #define CPP_N_DFLOAT 0x4000 967 #define CPP_N_DEFAULT 0x8000 968 969 #define CPP_N_FRACT 0x100000 /* Fract types. */ 970 #define CPP_N_ACCUM 0x200000 /* Accum types. */ 971 #define CPP_N_FLOATN 0x400000 /* _FloatN types. */ 972 #define CPP_N_FLOATNX 0x800000 /* _FloatNx types. */ 973 974 #define CPP_N_USERDEF 0x1000000 /* C++0x user-defined literal. */ 975 976 #define CPP_N_WIDTH_FLOATN_NX 0xF0000000 /* _FloatN / _FloatNx value 977 of N, divided by 16. */ 978 #define CPP_FLOATN_SHIFT 24 979 #define CPP_FLOATN_MAX 0xF0 980 981 /* Classify a CPP_NUMBER token. The return value is a combination of 982 the flags from the above sets. */ 983 extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *, 984 const char **, source_location); 985 986 /* Return the classification flags for a float suffix. */ 987 extern unsigned int cpp_interpret_float_suffix (cpp_reader *, const char *, 988 size_t); 989 990 /* Return the classification flags for an int suffix. */ 991 extern unsigned int cpp_interpret_int_suffix (cpp_reader *, const char *, 992 size_t); 993 994 /* Evaluate a token classified as category CPP_N_INTEGER. */ 995 extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *, 996 unsigned int); 997 998 /* Sign extend a number, with PRECISION significant bits and all 999 others assumed clear, to fill out a cpp_num structure. */ 1000 cpp_num cpp_num_sign_extend (cpp_num, size_t); 1001 1002 /* Diagnostic levels. To get a diagnostic without associating a 1003 position in the translation unit with it, use cpp_error_with_line 1004 with a line number of zero. */ 1005 1006 enum { 1007 /* Warning, an error with -Werror. */ 1008 CPP_DL_WARNING = 0, 1009 /* Same as CPP_DL_WARNING, except it is not suppressed in system headers. */ 1010 CPP_DL_WARNING_SYSHDR, 1011 /* Warning, an error with -pedantic-errors or -Werror. */ 1012 CPP_DL_PEDWARN, 1013 /* An error. */ 1014 CPP_DL_ERROR, 1015 /* An internal consistency check failed. Prints "internal error: ", 1016 otherwise the same as CPP_DL_ERROR. */ 1017 CPP_DL_ICE, 1018 /* An informative note following a warning. */ 1019 CPP_DL_NOTE, 1020 /* A fatal error. */ 1021 CPP_DL_FATAL 1022 }; 1023 1024 /* Warning reason codes. Use a reason code of zero for unclassified warnings 1025 and errors that are not warnings. */ 1026 enum { 1027 CPP_W_NONE = 0, 1028 CPP_W_DEPRECATED, 1029 CPP_W_COMMENTS, 1030 CPP_W_MISSING_INCLUDE_DIRS, 1031 CPP_W_TRIGRAPHS, 1032 CPP_W_MULTICHAR, 1033 CPP_W_TRADITIONAL, 1034 CPP_W_LONG_LONG, 1035 CPP_W_ENDIF_LABELS, 1036 CPP_W_NUM_SIGN_CHANGE, 1037 CPP_W_VARIADIC_MACROS, 1038 CPP_W_BUILTIN_MACRO_REDEFINED, 1039 CPP_W_DOLLARS, 1040 CPP_W_UNDEF, 1041 CPP_W_UNUSED_MACROS, 1042 CPP_W_CXX_OPERATOR_NAMES, 1043 CPP_W_NORMALIZE, 1044 CPP_W_INVALID_PCH, 1045 CPP_W_WARNING_DIRECTIVE, 1046 CPP_W_LITERAL_SUFFIX, 1047 CPP_W_DATE_TIME, 1048 CPP_W_PEDANTIC, 1049 CPP_W_C90_C99_COMPAT, 1050 CPP_W_CXX11_COMPAT, 1051 CPP_W_EXPANSION_TO_DEFINED 1052 }; 1053 1054 /* Output a diagnostic of some kind. */ 1055 extern bool cpp_error (cpp_reader *, int, const char *msgid, ...) 1056 ATTRIBUTE_PRINTF_3; 1057 extern bool cpp_warning (cpp_reader *, int, const char *msgid, ...) 1058 ATTRIBUTE_PRINTF_3; 1059 extern bool cpp_pedwarning (cpp_reader *, int, const char *msgid, ...) 1060 ATTRIBUTE_PRINTF_3; 1061 extern bool cpp_warning_syshdr (cpp_reader *, int, const char *msgid, ...) 1062 ATTRIBUTE_PRINTF_3; 1063 1064 /* Output a diagnostic with "MSGID: " preceding the 1065 error string of errno. No location is printed. */ 1066 extern bool cpp_errno (cpp_reader *, int, const char *msgid); 1067 /* Similarly, but with "FILENAME: " instead of "MSGID: ", where 1068 the filename is not localized. */ 1069 extern bool cpp_errno_filename (cpp_reader *, int, const char *filename, 1070 source_location loc); 1071 1072 /* Same as cpp_error, except additionally specifies a position as a 1073 (translation unit) physical line and physical column. If the line is 1074 zero, then no location is printed. */ 1075 extern bool cpp_error_with_line (cpp_reader *, int, source_location, 1076 unsigned, const char *msgid, ...) 1077 ATTRIBUTE_PRINTF_5; 1078 extern bool cpp_warning_with_line (cpp_reader *, int, source_location, 1079 unsigned, const char *msgid, ...) 1080 ATTRIBUTE_PRINTF_5; 1081 extern bool cpp_pedwarning_with_line (cpp_reader *, int, source_location, 1082 unsigned, const char *msgid, ...) 1083 ATTRIBUTE_PRINTF_5; 1084 extern bool cpp_warning_with_line_syshdr (cpp_reader *, int, source_location, 1085 unsigned, const char *msgid, ...) 1086 ATTRIBUTE_PRINTF_5; 1087 1088 extern bool cpp_error_at (cpp_reader * pfile, int level, 1089 source_location src_loc, const char *msgid, ...) 1090 ATTRIBUTE_PRINTF_4; 1091 1092 extern bool cpp_error_at_richloc (cpp_reader * pfile, int level, 1093 rich_location *richloc, const char *msgid, 1094 ...) 1095 ATTRIBUTE_PRINTF_4; 1096 1097 /* In lex.c */ 1098 extern int cpp_ideq (const cpp_token *, const char *); 1099 extern void cpp_output_line (cpp_reader *, FILE *); 1100 extern unsigned char *cpp_output_line_to_string (cpp_reader *, 1101 const unsigned char *); 1102 extern void cpp_output_token (const cpp_token *, FILE *); 1103 extern const char *cpp_type2name (enum cpp_ttype, unsigned char flags); 1104 /* Returns the value of an escape sequence, truncated to the correct 1105 target precision. PSTR points to the input pointer, which is just 1106 after the backslash. LIMIT is how much text we have. WIDE is true 1107 if the escape sequence is part of a wide character constant or 1108 string literal. Handles all relevant diagnostics. */ 1109 extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr, 1110 const unsigned char *limit, int wide); 1111 1112 /* Structure used to hold a comment block at a given location in the 1113 source code. */ 1114 1115 typedef struct 1116 { 1117 /* Text of the comment including the terminators. */ 1118 char *comment; 1119 1120 /* source location for the given comment. */ 1121 source_location sloc; 1122 } cpp_comment; 1123 1124 /* Structure holding all comments for a given cpp_reader. */ 1125 1126 typedef struct 1127 { 1128 /* table of comment entries. */ 1129 cpp_comment *entries; 1130 1131 /* number of actual entries entered in the table. */ 1132 int count; 1133 1134 /* number of entries allocated currently. */ 1135 int allocated; 1136 } cpp_comment_table; 1137 1138 /* Returns the table of comments encountered by the preprocessor. This 1139 table is only populated when pfile->state.save_comments is true. */ 1140 extern cpp_comment_table *cpp_get_comments (cpp_reader *); 1141 1142 /* In hash.c */ 1143 1144 /* Lookup an identifier in the hashtable. Puts the identifier in the 1145 table if it is not already there. */ 1146 extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *, 1147 unsigned int); 1148 1149 typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *); 1150 extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *); 1151 1152 /* In macro.c */ 1153 extern void cpp_scan_nooutput (cpp_reader *); 1154 extern int cpp_sys_macro_p (cpp_reader *); 1155 extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *, 1156 unsigned int); 1157 1158 /* In files.c */ 1159 extern bool cpp_included (cpp_reader *, const char *); 1160 extern bool cpp_included_before (cpp_reader *, const char *, source_location); 1161 extern void cpp_make_system_header (cpp_reader *, int, int); 1162 extern bool cpp_push_include (cpp_reader *, const char *); 1163 extern bool cpp_push_default_include (cpp_reader *, const char *); 1164 extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *); 1165 extern const char *cpp_get_path (struct _cpp_file *); 1166 extern cpp_dir *cpp_get_dir (struct _cpp_file *); 1167 extern cpp_buffer *cpp_get_buffer (cpp_reader *); 1168 extern struct _cpp_file *cpp_get_file (cpp_buffer *); 1169 extern cpp_buffer *cpp_get_prev (cpp_buffer *); 1170 extern void cpp_clear_file_cache (cpp_reader *); 1171 1172 /* In pch.c */ 1173 struct save_macro_data; 1174 extern int cpp_save_state (cpp_reader *, FILE *); 1175 extern int cpp_write_pch_deps (cpp_reader *, FILE *); 1176 extern int cpp_write_pch_state (cpp_reader *, FILE *); 1177 extern int cpp_valid_state (cpp_reader *, const char *, int); 1178 extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **); 1179 extern int cpp_read_state (cpp_reader *, const char *, FILE *, 1180 struct save_macro_data *); 1181 1182 /* In lex.c */ 1183 extern void cpp_force_token_locations (cpp_reader *, source_location *); 1184 extern void cpp_stop_forcing_token_locations (cpp_reader *); 1185 1186 /* In expr.c */ 1187 extern enum cpp_ttype cpp_userdef_string_remove_type 1188 (enum cpp_ttype type); 1189 extern enum cpp_ttype cpp_userdef_string_add_type 1190 (enum cpp_ttype type); 1191 extern enum cpp_ttype cpp_userdef_char_remove_type 1192 (enum cpp_ttype type); 1193 extern enum cpp_ttype cpp_userdef_char_add_type 1194 (enum cpp_ttype type); 1195 extern bool cpp_userdef_string_p 1196 (enum cpp_ttype type); 1197 extern bool cpp_userdef_char_p 1198 (enum cpp_ttype type); 1199 extern const char * cpp_get_userdef_suffix 1200 (const cpp_token *); 1201 1202 #endif /* ! LIBCPP_CPPLIB_H */ 1203