1 /* Definitions for CPP library. 2 Copyright (C) 1995-2019 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 _cpp_file; 40 41 /* The first three groups, apart from '=', can appear in preprocessor 42 expressions (+= and -= are used to indicate unary + and - resp.). 43 This allows a lookup table to be implemented in _cpp_parse_expr. 44 45 The first group, to CPP_LAST_EQ, can be immediately followed by an 46 '='. The lexer needs operators ending in '=', like ">>=", to be in 47 the same order as their counterparts without the '=', like ">>". 48 49 See the cpp_operator table optab in expr.c if you change the order or 50 add or remove anything in the first group. */ 51 52 #define TTYPE_TABLE \ 53 OP(EQ, "=") \ 54 OP(NOT, "!") \ 55 OP(GREATER, ">") /* compare */ \ 56 OP(LESS, "<") \ 57 OP(PLUS, "+") /* math */ \ 58 OP(MINUS, "-") \ 59 OP(MULT, "*") \ 60 OP(DIV, "/") \ 61 OP(MOD, "%") \ 62 OP(AND, "&") /* bit ops */ \ 63 OP(OR, "|") \ 64 OP(XOR, "^") \ 65 OP(RSHIFT, ">>") \ 66 OP(LSHIFT, "<<") \ 67 \ 68 OP(COMPL, "~") \ 69 OP(AND_AND, "&&") /* logical */ \ 70 OP(OR_OR, "||") \ 71 OP(QUERY, "?") \ 72 OP(COLON, ":") \ 73 OP(COMMA, ",") /* grouping */ \ 74 OP(OPEN_PAREN, "(") \ 75 OP(CLOSE_PAREN, ")") \ 76 TK(EOF, NONE) \ 77 OP(EQ_EQ, "==") /* compare */ \ 78 OP(NOT_EQ, "!=") \ 79 OP(GREATER_EQ, ">=") \ 80 OP(LESS_EQ, "<=") \ 81 \ 82 /* These two are unary + / - in preprocessor expressions. */ \ 83 OP(PLUS_EQ, "+=") /* math */ \ 84 OP(MINUS_EQ, "-=") \ 85 \ 86 OP(MULT_EQ, "*=") \ 87 OP(DIV_EQ, "/=") \ 88 OP(MOD_EQ, "%=") \ 89 OP(AND_EQ, "&=") /* bit ops */ \ 90 OP(OR_EQ, "|=") \ 91 OP(XOR_EQ, "^=") \ 92 OP(RSHIFT_EQ, ">>=") \ 93 OP(LSHIFT_EQ, "<<=") \ 94 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \ 95 OP(HASH, "#") /* digraphs */ \ 96 OP(PASTE, "##") \ 97 OP(OPEN_SQUARE, "[") \ 98 OP(CLOSE_SQUARE, "]") \ 99 OP(OPEN_BRACE, "{") \ 100 OP(CLOSE_BRACE, "}") \ 101 /* The remainder of the punctuation. Order is not significant. */ \ 102 OP(SEMICOLON, ";") /* structure */ \ 103 OP(ELLIPSIS, "...") \ 104 OP(PLUS_PLUS, "++") /* increment */ \ 105 OP(MINUS_MINUS, "--") \ 106 OP(DEREF, "->") /* accessors */ \ 107 OP(DOT, ".") \ 108 OP(SCOPE, "::") \ 109 OP(DEREF_STAR, "->*") \ 110 OP(DOT_STAR, ".*") \ 111 OP(ATSIGN, "@") /* used in Objective-C */ \ 112 \ 113 TK(NAME, IDENT) /* word */ \ 114 TK(AT_NAME, IDENT) /* @word - Objective-C */ \ 115 TK(NUMBER, LITERAL) /* 34_be+ta */ \ 116 \ 117 TK(CHAR, LITERAL) /* 'char' */ \ 118 TK(WCHAR, LITERAL) /* L'char' */ \ 119 TK(CHAR16, LITERAL) /* u'char' */ \ 120 TK(CHAR32, LITERAL) /* U'char' */ \ 121 TK(UTF8CHAR, LITERAL) /* u8'char' */ \ 122 TK(OTHER, LITERAL) /* stray punctuation */ \ 123 \ 124 TK(STRING, LITERAL) /* "string" */ \ 125 TK(WSTRING, LITERAL) /* L"string" */ \ 126 TK(STRING16, LITERAL) /* u"string" */ \ 127 TK(STRING32, LITERAL) /* U"string" */ \ 128 TK(UTF8STRING, LITERAL) /* u8"string" */ \ 129 TK(OBJC_STRING, LITERAL) /* @"string" - Objective-C */ \ 130 TK(HEADER_NAME, LITERAL) /* <stdio.h> in #include */ \ 131 \ 132 TK(CHAR_USERDEF, LITERAL) /* 'char'_suffix - C++-0x */ \ 133 TK(WCHAR_USERDEF, LITERAL) /* L'char'_suffix - C++-0x */ \ 134 TK(CHAR16_USERDEF, LITERAL) /* u'char'_suffix - C++-0x */ \ 135 TK(CHAR32_USERDEF, LITERAL) /* U'char'_suffix - C++-0x */ \ 136 TK(UTF8CHAR_USERDEF, LITERAL) /* u8'char'_suffix - C++-0x */ \ 137 TK(STRING_USERDEF, LITERAL) /* "string"_suffix - C++-0x */ \ 138 TK(WSTRING_USERDEF, LITERAL) /* L"string"_suffix - C++-0x */ \ 139 TK(STRING16_USERDEF, LITERAL) /* u"string"_suffix - C++-0x */ \ 140 TK(STRING32_USERDEF, LITERAL) /* U"string"_suffix - C++-0x */ \ 141 TK(UTF8STRING_USERDEF,LITERAL) /* u8"string"_suffix - C++-0x */ \ 142 \ 143 TK(COMMENT, LITERAL) /* Only if output comments. */ \ 144 /* SPELL_LITERAL happens to DTRT. */ \ 145 TK(MACRO_ARG, NONE) /* Macro argument. */ \ 146 TK(PRAGMA, NONE) /* Only for deferred pragmas. */ \ 147 TK(PRAGMA_EOL, NONE) /* End-of-line for deferred pragmas. */ \ 148 TK(PADDING, NONE) /* Whitespace for -E. */ 149 150 #define OP(e, s) CPP_ ## e, 151 #define TK(e, s) CPP_ ## e, 152 enum cpp_ttype 153 { 154 TTYPE_TABLE 155 N_TTYPES, 156 157 /* A token type for keywords, as opposed to ordinary identifiers. */ 158 CPP_KEYWORD, 159 160 /* Positions in the table. */ 161 CPP_LAST_EQ = CPP_LSHIFT, 162 CPP_FIRST_DIGRAPH = CPP_HASH, 163 CPP_LAST_PUNCTUATOR= CPP_ATSIGN, 164 CPP_LAST_CPP_OP = CPP_LESS_EQ 165 }; 166 #undef OP 167 #undef TK 168 169 /* C language kind, used when calling cpp_create_reader. */ 170 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_GNUC11, CLK_GNUC17, CLK_GNUC2X, 171 CLK_STDC89, CLK_STDC94, CLK_STDC99, CLK_STDC11, CLK_STDC17, 172 CLK_STDC2X, 173 CLK_GNUCXX, CLK_CXX98, CLK_GNUCXX11, CLK_CXX11, 174 CLK_GNUCXX14, CLK_CXX14, CLK_GNUCXX17, CLK_CXX17, 175 CLK_GNUCXX2A, CLK_CXX2A, CLK_ASM}; 176 177 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */ 178 struct GTY(()) cpp_string { 179 unsigned int len; 180 const unsigned char *text; 181 }; 182 183 /* Flags for the cpp_token structure. */ 184 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */ 185 #define DIGRAPH (1 << 1) /* If it was a digraph. */ 186 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */ 187 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */ 188 #define NAMED_OP (1 << 4) /* C++ named operators. */ 189 #define PREV_FALLTHROUGH (1 << 5) /* On a token preceeded by FALLTHROUGH 190 comment. */ 191 #define BOL (1 << 6) /* Token at beginning of line. */ 192 #define PURE_ZERO (1 << 7) /* Single 0 digit, used by the C++ frontend, 193 set in c-lex.c. */ 194 #define SP_DIGRAPH (1 << 8) /* # or ## token was a digraph. */ 195 #define SP_PREV_WHITE (1 << 9) /* If whitespace before a ## 196 operator, or before this token 197 after a # operator. */ 198 #define NO_EXPAND (1 << 10) /* Do not macro-expand this token. */ 199 200 /* Specify which field, if any, of the cpp_token union is used. */ 201 202 enum cpp_token_fld_kind { 203 CPP_TOKEN_FLD_NODE, 204 CPP_TOKEN_FLD_SOURCE, 205 CPP_TOKEN_FLD_STR, 206 CPP_TOKEN_FLD_ARG_NO, 207 CPP_TOKEN_FLD_TOKEN_NO, 208 CPP_TOKEN_FLD_PRAGMA, 209 CPP_TOKEN_FLD_NONE 210 }; 211 212 /* A macro argument in the cpp_token union. */ 213 struct GTY(()) cpp_macro_arg { 214 /* Argument number. */ 215 unsigned int arg_no; 216 /* The original spelling of the macro argument token. */ 217 cpp_hashnode * 218 GTY ((nested_ptr (union tree_node, 219 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 220 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) 221 spelling; 222 }; 223 224 /* An identifier in the cpp_token union. */ 225 struct GTY(()) cpp_identifier { 226 /* The canonical (UTF-8) spelling of the identifier. */ 227 cpp_hashnode * 228 GTY ((nested_ptr (union tree_node, 229 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 230 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) 231 node; 232 /* The original spelling of the identifier. */ 233 cpp_hashnode * 234 GTY ((nested_ptr (union tree_node, 235 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 236 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) 237 spelling; 238 }; 239 240 /* A preprocessing token. This has been carefully packed and should 241 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */ 242 struct GTY(()) cpp_token { 243 244 /* Location of first char of token, together with range of full token. */ 245 location_t src_loc; 246 247 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */ 248 unsigned short flags; /* flags - see above */ 249 250 union cpp_token_u 251 { 252 /* An identifier. */ 253 struct cpp_identifier GTY ((tag ("CPP_TOKEN_FLD_NODE"))) node; 254 255 /* Inherit padding from this token. */ 256 cpp_token * GTY ((tag ("CPP_TOKEN_FLD_SOURCE"))) source; 257 258 /* A string, or number. */ 259 struct cpp_string GTY ((tag ("CPP_TOKEN_FLD_STR"))) str; 260 261 /* Argument no. (and original spelling) for a CPP_MACRO_ARG. */ 262 struct cpp_macro_arg GTY ((tag ("CPP_TOKEN_FLD_ARG_NO"))) macro_arg; 263 264 /* Original token no. for a CPP_PASTE (from a sequence of 265 consecutive paste tokens in a macro expansion). */ 266 unsigned int GTY ((tag ("CPP_TOKEN_FLD_TOKEN_NO"))) token_no; 267 268 /* Caller-supplied identifier for a CPP_PRAGMA. */ 269 unsigned int GTY ((tag ("CPP_TOKEN_FLD_PRAGMA"))) pragma; 270 } GTY ((desc ("cpp_token_val_index (&%1)"))) val; 271 }; 272 273 /* Say which field is in use. */ 274 extern enum cpp_token_fld_kind cpp_token_val_index (const cpp_token *tok); 275 276 /* A type wide enough to hold any multibyte source character. 277 cpplib's character constant interpreter requires an unsigned type. 278 Also, a typedef for the signed equivalent. 279 The width of this type is capped at 32 bits; there do exist targets 280 where wchar_t is 64 bits, but only in a non-default mode, and there 281 would be no meaningful interpretation for a wchar_t value greater 282 than 2^32 anyway -- the widest wide-character encoding around is 283 ISO 10646, which stops at 2^31. */ 284 #if CHAR_BIT * SIZEOF_INT >= 32 285 # define CPPCHAR_SIGNED_T int 286 #elif CHAR_BIT * SIZEOF_LONG >= 32 287 # define CPPCHAR_SIGNED_T long 288 #else 289 # error "Cannot find a least-32-bit signed integer type" 290 #endif 291 typedef unsigned CPPCHAR_SIGNED_T cppchar_t; 292 typedef CPPCHAR_SIGNED_T cppchar_signed_t; 293 294 /* Style of header dependencies to generate. */ 295 enum cpp_deps_style { DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM }; 296 297 /* The possible normalization levels, from most restrictive to least. */ 298 enum cpp_normalize_level { 299 /* In NFKC. */ 300 normalized_KC = 0, 301 /* In NFC. */ 302 normalized_C, 303 /* In NFC, except for subsequences where being in NFC would make 304 the identifier invalid. */ 305 normalized_identifier_C, 306 /* Not normalized at all. */ 307 normalized_none 308 }; 309 310 /* This structure is nested inside struct cpp_reader, and 311 carries all the options visible to the command line. */ 312 struct cpp_options 313 { 314 /* Characters between tab stops. */ 315 unsigned int tabstop; 316 317 /* The language we're preprocessing. */ 318 enum c_lang lang; 319 320 /* Nonzero means use extra default include directories for C++. */ 321 unsigned char cplusplus; 322 323 /* Nonzero means handle cplusplus style comments. */ 324 unsigned char cplusplus_comments; 325 326 /* Nonzero means define __OBJC__, treat @ as a special token, use 327 the OBJC[PLUS]_INCLUDE_PATH environment variable, and allow 328 "#import". */ 329 unsigned char objc; 330 331 /* Nonzero means don't copy comments into the output file. */ 332 unsigned char discard_comments; 333 334 /* Nonzero means don't copy comments into the output file during 335 macro expansion. */ 336 unsigned char discard_comments_in_macro_exp; 337 338 /* Nonzero means process the ISO trigraph sequences. */ 339 unsigned char trigraphs; 340 341 /* Nonzero means process the ISO digraph sequences. */ 342 unsigned char digraphs; 343 344 /* Nonzero means to allow hexadecimal floats and LL suffixes. */ 345 unsigned char extended_numbers; 346 347 /* Nonzero means process u/U prefix literals (UTF-16/32). */ 348 unsigned char uliterals; 349 350 /* Nonzero means process u8 prefixed character literals (UTF-8). */ 351 unsigned char utf8_char_literals; 352 353 /* Nonzero means process r/R raw strings. If this is set, uliterals 354 must be set as well. */ 355 unsigned char rliterals; 356 357 /* Nonzero means print names of header files (-H). */ 358 unsigned char print_include_names; 359 360 /* Nonzero means complain about deprecated features. */ 361 unsigned char cpp_warn_deprecated; 362 363 /* Nonzero means warn if slash-star appears in a comment. */ 364 unsigned char warn_comments; 365 366 /* Nonzero means to warn about __DATA__, __TIME__ and __TIMESTAMP__ usage. */ 367 unsigned char warn_date_time; 368 369 /* Nonzero means warn if a user-supplied include directory does not 370 exist. */ 371 unsigned char warn_missing_include_dirs; 372 373 /* Nonzero means warn if there are any trigraphs. */ 374 unsigned char warn_trigraphs; 375 376 /* Nonzero means warn about multicharacter charconsts. */ 377 unsigned char warn_multichar; 378 379 /* Nonzero means warn about various incompatibilities with 380 traditional C. */ 381 unsigned char cpp_warn_traditional; 382 383 /* Nonzero means warn about long long numeric constants. */ 384 unsigned char cpp_warn_long_long; 385 386 /* Nonzero means warn about text after an #endif (or #else). */ 387 unsigned char warn_endif_labels; 388 389 /* Nonzero means warn about implicit sign changes owing to integer 390 promotions. */ 391 unsigned char warn_num_sign_change; 392 393 /* Zero means don't warn about __VA_ARGS__ usage in c89 pedantic mode. 394 Presumably the usage is protected by the appropriate #ifdef. */ 395 unsigned char warn_variadic_macros; 396 397 /* Nonzero means warn about builtin macros that are redefined or 398 explicitly undefined. */ 399 unsigned char warn_builtin_macro_redefined; 400 401 /* Different -Wimplicit-fallthrough= levels. */ 402 unsigned char cpp_warn_implicit_fallthrough; 403 404 /* Nonzero means we should look for header.gcc files that remap file 405 names. */ 406 unsigned char remap; 407 408 /* Zero means dollar signs are punctuation. */ 409 unsigned char dollars_in_ident; 410 411 /* Nonzero means UCNs are accepted in identifiers. */ 412 unsigned char extended_identifiers; 413 414 /* True if we should warn about dollars in identifiers or numbers 415 for this translation unit. */ 416 unsigned char warn_dollars; 417 418 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */ 419 unsigned char warn_undef; 420 421 /* Nonzero means warn if "defined" is encountered in a place other than 422 an #if. */ 423 unsigned char warn_expansion_to_defined; 424 425 /* Nonzero means warn of unused macros from the main file. */ 426 unsigned char warn_unused_macros; 427 428 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */ 429 unsigned char c99; 430 431 /* Nonzero if we are conforming to a specific C or C++ standard. */ 432 unsigned char std; 433 434 /* Nonzero means give all the error messages the ANSI standard requires. */ 435 unsigned char cpp_pedantic; 436 437 /* Nonzero means we're looking at already preprocessed code, so don't 438 bother trying to do macro expansion and whatnot. */ 439 unsigned char preprocessed; 440 441 /* Nonzero means we are going to emit debugging logs during 442 preprocessing. */ 443 unsigned char debug; 444 445 /* Nonzero means we are tracking locations of tokens involved in 446 macro expansion. 1 Means we track the location in degraded mode 447 where we do not track locations of tokens resulting from the 448 expansion of arguments of function-like macro. 2 Means we do 449 track all macro expansions. This last option is the one that 450 consumes the highest amount of memory. */ 451 unsigned char track_macro_expansion; 452 453 /* Nonzero means handle C++ alternate operator names. */ 454 unsigned char operator_names; 455 456 /* Nonzero means warn about use of C++ alternate operator names. */ 457 unsigned char warn_cxx_operator_names; 458 459 /* True for traditional preprocessing. */ 460 unsigned char traditional; 461 462 /* Nonzero for C++ 2011 Standard user-defined literals. */ 463 unsigned char user_literals; 464 465 /* Nonzero means warn when a string or character literal is followed by a 466 ud-suffix which does not beging with an underscore. */ 467 unsigned char warn_literal_suffix; 468 469 /* Nonzero means interpret imaginary, fixed-point, or other gnu extension 470 literal number suffixes as user-defined literal number suffixes. */ 471 unsigned char ext_numeric_literals; 472 473 /* Nonzero means extended identifiers allow the characters specified 474 in C11 and C++11. */ 475 unsigned char c11_identifiers; 476 477 /* Nonzero for C++ 2014 Standard binary constants. */ 478 unsigned char binary_constants; 479 480 /* Nonzero for C++ 2014 Standard digit separators. */ 481 unsigned char digit_separators; 482 483 /* Nonzero for C++2a __VA_OPT__ feature. */ 484 unsigned char va_opt; 485 486 /* Holds the name of the target (execution) character set. */ 487 const char *narrow_charset; 488 489 /* Holds the name of the target wide character set. */ 490 const char *wide_charset; 491 492 /* Holds the name of the input character set. */ 493 const char *input_charset; 494 495 /* The minimum permitted level of normalization before a warning 496 is generated. See enum cpp_normalize_level. */ 497 int warn_normalize; 498 499 /* True to warn about precompiled header files we couldn't use. */ 500 bool warn_invalid_pch; 501 502 /* True if dependencies should be restored from a precompiled header. */ 503 bool restore_pch_deps; 504 505 /* True if warn about differences between C90 and C99. */ 506 signed char cpp_warn_c90_c99_compat; 507 508 /* True if warn about differences between C++98 and C++11. */ 509 bool cpp_warn_cxx11_compat; 510 511 /* Dependency generation. */ 512 struct 513 { 514 /* Style of header dependencies to generate. */ 515 enum cpp_deps_style style; 516 517 /* Assume missing files are generated files. */ 518 bool missing_files; 519 520 /* Generate phony targets for each dependency apart from the first 521 one. */ 522 bool phony_targets; 523 524 /* If true, no dependency is generated on the main file. */ 525 bool ignore_main_file; 526 527 /* If true, intend to use the preprocessor output (e.g., for compilation) 528 in addition to the dependency info. */ 529 bool need_preprocessor_output; 530 } deps; 531 532 /* Target-specific features set by the front end or client. */ 533 534 /* Precision for target CPP arithmetic, target characters, target 535 ints and target wide characters, respectively. */ 536 size_t precision, char_precision, int_precision, wchar_precision; 537 538 /* True means chars (wide chars) are unsigned. */ 539 bool unsigned_char, unsigned_wchar; 540 541 /* True if the most significant byte in a word has the lowest 542 address in memory. */ 543 bool bytes_big_endian; 544 545 /* Nonzero means __STDC__ should have the value 0 in system headers. */ 546 unsigned char stdc_0_in_system_headers; 547 548 /* True disables tokenization outside of preprocessing directives. */ 549 bool directives_only; 550 551 /* True enables canonicalization of system header file paths. */ 552 bool canonical_system_headers; 553 }; 554 555 /* Diagnostic levels. To get a diagnostic without associating a 556 position in the translation unit with it, use cpp_error_with_line 557 with a line number of zero. */ 558 559 enum cpp_diagnostic_level { 560 /* Warning, an error with -Werror. */ 561 CPP_DL_WARNING = 0, 562 /* Same as CPP_DL_WARNING, except it is not suppressed in system headers. */ 563 CPP_DL_WARNING_SYSHDR, 564 /* Warning, an error with -pedantic-errors or -Werror. */ 565 CPP_DL_PEDWARN, 566 /* An error. */ 567 CPP_DL_ERROR, 568 /* An internal consistency check failed. Prints "internal error: ", 569 otherwise the same as CPP_DL_ERROR. */ 570 CPP_DL_ICE, 571 /* An informative note following a warning. */ 572 CPP_DL_NOTE, 573 /* A fatal error. */ 574 CPP_DL_FATAL 575 }; 576 577 /* Warning reason codes. Use a reason code of CPP_W_NONE for unclassified 578 warnings and diagnostics that are not warnings. */ 579 580 enum cpp_warning_reason { 581 CPP_W_NONE = 0, 582 CPP_W_DEPRECATED, 583 CPP_W_COMMENTS, 584 CPP_W_MISSING_INCLUDE_DIRS, 585 CPP_W_TRIGRAPHS, 586 CPP_W_MULTICHAR, 587 CPP_W_TRADITIONAL, 588 CPP_W_LONG_LONG, 589 CPP_W_ENDIF_LABELS, 590 CPP_W_NUM_SIGN_CHANGE, 591 CPP_W_VARIADIC_MACROS, 592 CPP_W_BUILTIN_MACRO_REDEFINED, 593 CPP_W_DOLLARS, 594 CPP_W_UNDEF, 595 CPP_W_UNUSED_MACROS, 596 CPP_W_CXX_OPERATOR_NAMES, 597 CPP_W_NORMALIZE, 598 CPP_W_INVALID_PCH, 599 CPP_W_WARNING_DIRECTIVE, 600 CPP_W_LITERAL_SUFFIX, 601 CPP_W_DATE_TIME, 602 CPP_W_PEDANTIC, 603 CPP_W_C90_C99_COMPAT, 604 CPP_W_CXX11_COMPAT, 605 CPP_W_EXPANSION_TO_DEFINED 606 }; 607 608 /* Callback for header lookup for HEADER, which is the name of a 609 source file. It is used as a method of last resort to find headers 610 that are not otherwise found during the normal include processing. 611 The return value is the malloced name of a header to try and open, 612 if any, or NULL otherwise. This callback is called only if the 613 header is otherwise unfound. */ 614 typedef const char *(*missing_header_cb)(cpp_reader *, const char *header, cpp_dir **); 615 616 /* Call backs to cpplib client. */ 617 struct cpp_callbacks 618 { 619 /* Called when a new line of preprocessed output is started. */ 620 void (*line_change) (cpp_reader *, const cpp_token *, int); 621 622 /* Called when switching to/from a new file. 623 The line_map is for the new file. It is NULL if there is no new file. 624 (In C this happens when done with <built-in>+<command line> and also 625 when done with a main file.) This can be used for resource cleanup. */ 626 void (*file_change) (cpp_reader *, const line_map_ordinary *); 627 628 void (*dir_change) (cpp_reader *, const char *); 629 void (*include) (cpp_reader *, location_t, const unsigned char *, 630 const char *, int, const cpp_token **); 631 void (*define) (cpp_reader *, location_t, cpp_hashnode *); 632 void (*undef) (cpp_reader *, location_t, cpp_hashnode *); 633 void (*ident) (cpp_reader *, location_t, const cpp_string *); 634 void (*def_pragma) (cpp_reader *, location_t); 635 int (*valid_pch) (cpp_reader *, const char *, int); 636 void (*read_pch) (cpp_reader *, const char *, int, const char *); 637 missing_header_cb missing_header; 638 639 /* Context-sensitive macro support. Returns macro (if any) that should 640 be expanded. */ 641 cpp_hashnode * (*macro_to_expand) (cpp_reader *, const cpp_token *); 642 643 /* Called to emit a diagnostic. This callback receives the 644 translated message. */ 645 bool (*diagnostic) (cpp_reader *, 646 enum cpp_diagnostic_level, 647 enum cpp_warning_reason, 648 rich_location *, 649 const char *, va_list *) 650 ATTRIBUTE_FPTR_PRINTF(5,0); 651 652 /* Callbacks for when a macro is expanded, or tested (whether 653 defined or not at the time) in #ifdef, #ifndef or "defined". */ 654 void (*used_define) (cpp_reader *, location_t, cpp_hashnode *); 655 void (*used_undef) (cpp_reader *, location_t, cpp_hashnode *); 656 /* Called before #define and #undef or other macro definition 657 changes are processed. */ 658 void (*before_define) (cpp_reader *); 659 /* Called whenever a macro is expanded or tested. 660 Second argument is the location of the start of the current expansion. */ 661 void (*used) (cpp_reader *, location_t, cpp_hashnode *); 662 663 /* Callback to identify whether an attribute exists. */ 664 int (*has_attribute) (cpp_reader *); 665 666 /* Callback that can change a user lazy into normal macro. */ 667 void (*user_lazy_macro) (cpp_reader *, cpp_macro *, unsigned); 668 669 /* Callback to parse SOURCE_DATE_EPOCH from environment. */ 670 time_t (*get_source_date_epoch) (cpp_reader *); 671 672 /* Callback for providing suggestions for misspelled directives. */ 673 const char *(*get_suggestion) (cpp_reader *, const char *, const char *const *); 674 675 /* Callback for when a comment is encountered, giving the location 676 of the opening slash, a pointer to the content (which is not 677 necessarily 0-terminated), and the length of the content. 678 The content contains the opening slash-star (or slash-slash), 679 and for C-style comments contains the closing star-slash. For 680 C++-style comments it does not include the terminating newline. */ 681 void (*comment) (cpp_reader *, location_t, const unsigned char *, 682 size_t); 683 684 /* Callback for filename remapping in __FILE__ and __BASE_FILE__ macro 685 expansions. */ 686 const char *(*remap_filename) (const char*); 687 }; 688 689 #ifdef VMS 690 #define INO_T_CPP ino_t ino[3] 691 #else 692 #define INO_T_CPP ino_t ino 693 #endif 694 695 /* Chain of directories to look for include files in. */ 696 struct cpp_dir 697 { 698 /* NULL-terminated singly-linked list. */ 699 struct cpp_dir *next; 700 701 /* NAME of the directory, NUL-terminated. */ 702 char *name; 703 unsigned int len; 704 705 /* One if a system header, two if a system header that has extern 706 "C" guards for C++. */ 707 unsigned char sysp; 708 709 /* Is this a user-supplied directory? */ 710 bool user_supplied_p; 711 712 /* The canonicalized NAME as determined by lrealpath. This field 713 is only used by hosts that lack reliable inode numbers. */ 714 char *canonical_name; 715 716 /* Mapping of file names for this directory for MS-DOS and related 717 platforms. A NULL-terminated array of (from, to) pairs. */ 718 const char **name_map; 719 720 /* Routine to construct pathname, given the search path name and the 721 HEADER we are trying to find, return a constructed pathname to 722 try and open. If this is NULL, the constructed pathname is as 723 constructed by append_file_to_dir. */ 724 char *(*construct) (const char *header, cpp_dir *dir); 725 726 /* The C front end uses these to recognize duplicated 727 directories in the search path. */ 728 INO_T_CPP; 729 dev_t dev; 730 }; 731 732 /* The kind of the cpp_macro. */ 733 enum cpp_macro_kind { 734 cmk_macro, /* An ISO macro (token expansion). */ 735 cmk_assert, /* An assertion. */ 736 cmk_traditional /* A traditional macro (text expansion). */ 737 }; 738 739 /* Each macro definition is recorded in a cpp_macro structure. 740 Variadic macros cannot occur with traditional cpp. */ 741 struct GTY(()) cpp_macro { 742 union cpp_parm_u 743 { 744 /* Parameters, if any. If parameter names use extended identifiers, 745 the original spelling of those identifiers, not the canonical 746 UTF-8 spelling, goes here. */ 747 cpp_hashnode ** GTY ((tag ("false"), 748 nested_ptr (union tree_node, 749 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", 750 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"), 751 length ("%1.paramc"))) params; 752 753 /* If this is an assertion, the next one in the chain. */ 754 cpp_macro *GTY ((tag ("true"))) next; 755 } GTY ((desc ("%1.kind == cmk_assert"))) parm; 756 757 /* Definition line number. */ 758 location_t line; 759 760 /* Number of tokens in body, or bytes for traditional macros. */ 761 /* Do we really need 2^32-1 range here? */ 762 unsigned int count; 763 764 /* Number of parameters. */ 765 unsigned short paramc; 766 767 /* Non-zero if this is a user-lazy macro, value provided by user. */ 768 unsigned char lazy; 769 770 /* The kind of this macro (ISO, trad or assert) */ 771 unsigned kind : 2; 772 773 /* If a function-like macro. */ 774 unsigned int fun_like : 1; 775 776 /* If a variadic macro. */ 777 unsigned int variadic : 1; 778 779 /* If macro defined in system header. */ 780 unsigned int syshdr : 1; 781 782 /* Nonzero if it has been expanded or had its existence tested. */ 783 unsigned int used : 1; 784 785 /* Indicate whether the tokens include extra CPP_PASTE tokens at the 786 end to track invalid redefinitions with consecutive CPP_PASTE 787 tokens. */ 788 unsigned int extra_tokens : 1; 789 790 /* 1 bits spare (32-bit). 33 on 64-bit target. */ 791 792 union cpp_exp_u 793 { 794 /* Trailing array of replacement tokens (ISO), or assertion body value. */ 795 cpp_token GTY ((tag ("false"), length ("%1.count"))) tokens[1]; 796 797 /* Pointer to replacement text (traditional). See comment at top 798 of cpptrad.c for how traditional function-like macros are 799 encoded. */ 800 const unsigned char *GTY ((tag ("true"))) text; 801 } GTY ((desc ("%1.kind == cmk_traditional"))) exp; 802 }; 803 804 /* Poisoned identifiers are flagged NODE_POISONED. NODE_OPERATOR (C++ 805 only) indicates an identifier that behaves like an operator such as 806 "xor". NODE_DIAGNOSTIC is for speed in lex_token: it indicates a 807 diagnostic may be required for this node. Currently this only 808 applies to __VA_ARGS__, poisoned identifiers, and -Wc++-compat 809 warnings about NODE_OPERATOR. */ 810 811 /* Hash node flags. */ 812 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */ 813 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */ 814 #define NODE_DIAGNOSTIC (1 << 2) /* Possible diagnostic when lexed. */ 815 #define NODE_WARN (1 << 3) /* Warn if redefined or undefined. */ 816 #define NODE_DISABLED (1 << 4) /* A disabled macro. */ 817 #define NODE_USED (1 << 5) /* Dumped with -dU. */ 818 #define NODE_CONDITIONAL (1 << 6) /* Conditional macro */ 819 #define NODE_WARN_OPERATOR (1 << 7) /* Warn about C++ named operator. */ 820 821 /* Different flavors of hash node. */ 822 enum node_type 823 { 824 NT_VOID = 0, /* Maybe an assert? */ 825 NT_MACRO_ARG, /* A macro arg. */ 826 NT_USER_MACRO, /* A user macro. */ 827 NT_BUILTIN_MACRO, /* A builtin macro. */ 828 NT_MACRO_MASK = NT_USER_MACRO /* Mask for either macro kind. */ 829 }; 830 831 /* Different flavors of builtin macro. _Pragma is an operator, but we 832 handle it with the builtin code for efficiency reasons. */ 833 enum cpp_builtin_type 834 { 835 BT_SPECLINE = 0, /* `__LINE__' */ 836 BT_DATE, /* `__DATE__' */ 837 BT_FILE, /* `__FILE__' */ 838 BT_BASE_FILE, /* `__BASE_FILE__' */ 839 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ 840 BT_TIME, /* `__TIME__' */ 841 BT_STDC, /* `__STDC__' */ 842 BT_PRAGMA, /* `_Pragma' operator */ 843 BT_TIMESTAMP, /* `__TIMESTAMP__' */ 844 BT_COUNTER, /* `__COUNTER__' */ 845 BT_HAS_ATTRIBUTE /* `__has_attribute__(x)' */ 846 }; 847 848 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE)) 849 #define HT_NODE(NODE) (&(NODE)->ident) 850 #define NODE_LEN(NODE) HT_LEN (HT_NODE (NODE)) 851 #define NODE_NAME(NODE) HT_STR (HT_NODE (NODE)) 852 853 /* The common part of an identifier node shared amongst all 3 C front 854 ends. Also used to store CPP identifiers, which are a superset of 855 identifiers in the grammatical sense. */ 856 857 union GTY(()) _cpp_hashnode_value { 858 /* Assert (maybe NULL) */ 859 cpp_macro * GTY((tag ("NT_VOID"))) answers; 860 /* Macro (never NULL) */ 861 cpp_macro * GTY((tag ("NT_USER_MACRO"))) macro; 862 /* Code for a builtin macro. */ 863 enum cpp_builtin_type GTY ((tag ("NT_BUILTIN_MACRO"))) builtin; 864 /* Macro argument index. */ 865 unsigned short GTY ((tag ("NT_MACRO_ARG"))) arg_index; 866 }; 867 868 struct GTY(()) cpp_hashnode { 869 struct ht_identifier ident; 870 unsigned int is_directive : 1; 871 unsigned int directive_index : 7; /* If is_directive, 872 then index into directive table. 873 Otherwise, a NODE_OPERATOR. */ 874 unsigned char rid_code; /* Rid code - for front ends. */ 875 ENUM_BITFIELD(node_type) type : 2; /* CPP node type. */ 876 unsigned int flags : 8; /* CPP flags. */ 877 878 /* 6 bits spare (plus another 32 on 64-bit hosts). */ 879 880 union _cpp_hashnode_value GTY ((desc ("%1.type"))) value; 881 }; 882 883 /* A class for iterating through the source locations within a 884 string token (before escapes are interpreted, and before 885 concatenation). */ 886 887 class cpp_string_location_reader { 888 public: 889 cpp_string_location_reader (location_t src_loc, 890 line_maps *line_table); 891 892 source_range get_next (); 893 894 private: 895 location_t m_loc; 896 int m_offset_per_column; 897 line_maps *m_line_table; 898 }; 899 900 /* A class for storing the source ranges of all of the characters within 901 a string literal, after escapes are interpreted, and after 902 concatenation. 903 904 This is not GTY-marked, as instances are intended to be temporary. */ 905 906 class cpp_substring_ranges 907 { 908 public: 909 cpp_substring_ranges (); 910 ~cpp_substring_ranges (); 911 912 int get_num_ranges () const { return m_num_ranges; } 913 source_range get_range (int idx) const 914 { 915 linemap_assert (idx < m_num_ranges); 916 return m_ranges[idx]; 917 } 918 919 void add_range (source_range range); 920 void add_n_ranges (int num, cpp_string_location_reader &loc_reader); 921 922 private: 923 source_range *m_ranges; 924 int m_num_ranges; 925 int m_alloc_ranges; 926 }; 927 928 /* Call this first to get a handle to pass to other functions. 929 930 If you want cpplib to manage its own hashtable, pass in a NULL 931 pointer. Otherwise you should pass in an initialized hash table 932 that cpplib will share; this technique is used by the C front 933 ends. */ 934 extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *, 935 struct line_maps *); 936 937 /* Reset the cpp_reader's line_map. This is only used after reading a 938 PCH file. */ 939 extern void cpp_set_line_map (cpp_reader *, struct line_maps *); 940 941 /* Call this to change the selected language standard (e.g. because of 942 command line options). */ 943 extern void cpp_set_lang (cpp_reader *, enum c_lang); 944 945 /* Set the include paths. */ 946 extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int); 947 948 /* Provide src:dst pair for __FILE__ remapping. */ 949 extern void add_cpp_remap_path (const char *); 950 951 /* Call these to get pointers to the options, callback, and deps 952 structures for a given reader. These pointers are good until you 953 call cpp_finish on that reader. You can either edit the callbacks 954 through the pointer returned from cpp_get_callbacks, or set them 955 with cpp_set_callbacks. */ 956 extern cpp_options *cpp_get_options (cpp_reader *); 957 extern cpp_callbacks *cpp_get_callbacks (cpp_reader *); 958 extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *); 959 extern struct deps *cpp_get_deps (cpp_reader *); 960 961 /* This function reads the file, but does not start preprocessing. It 962 returns the name of the original file; this is the same as the 963 input file, except for preprocessed input. This will generate at 964 least one file change callback, and possibly a line change callback 965 too. If there was an error opening the file, it returns NULL. */ 966 extern const char *cpp_read_main_file (cpp_reader *, const char *); 967 968 /* Set up built-ins with special behavior. Use cpp_init_builtins() 969 instead unless your know what you are doing. */ 970 extern void cpp_init_special_builtins (cpp_reader *); 971 972 /* Set up built-ins like __FILE__. */ 973 extern void cpp_init_builtins (cpp_reader *, int); 974 975 /* This is called after options have been parsed, and partially 976 processed. */ 977 extern void cpp_post_options (cpp_reader *); 978 979 /* Set up translation to the target character set. */ 980 extern void cpp_init_iconv (cpp_reader *); 981 982 /* Call this to finish preprocessing. If you requested dependency 983 generation, pass an open stream to write the information to, 984 otherwise NULL. It is your responsibility to close the stream. */ 985 extern void cpp_finish (cpp_reader *, FILE *deps_stream); 986 987 /* Call this to release the handle at the end of preprocessing. Any 988 use of the handle after this function returns is invalid. */ 989 extern void cpp_destroy (cpp_reader *); 990 991 extern unsigned int cpp_token_len (const cpp_token *); 992 extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *); 993 extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *, 994 unsigned char *, bool); 995 extern void cpp_register_pragma (cpp_reader *, const char *, const char *, 996 void (*) (cpp_reader *), bool); 997 extern void cpp_register_deferred_pragma (cpp_reader *, const char *, 998 const char *, unsigned, bool, bool); 999 extern int cpp_avoid_paste (cpp_reader *, const cpp_token *, 1000 const cpp_token *); 1001 extern const cpp_token *cpp_get_token (cpp_reader *); 1002 extern const cpp_token *cpp_get_token_with_location (cpp_reader *, 1003 location_t *); 1004 inline bool cpp_user_macro_p (const cpp_hashnode *node) 1005 { 1006 return node->type == NT_USER_MACRO; 1007 } 1008 inline bool cpp_builtin_macro_p (const cpp_hashnode *node) 1009 { 1010 return node->type == NT_BUILTIN_MACRO; 1011 } 1012 inline bool cpp_macro_p (const cpp_hashnode *node) 1013 { 1014 return node->type & NT_MACRO_MASK; 1015 } 1016 1017 /* Returns true if NODE is a function-like user macro. */ 1018 inline bool cpp_fun_like_macro_p (cpp_hashnode *node) 1019 { 1020 return cpp_user_macro_p (node) && node->value.macro->fun_like; 1021 } 1022 1023 extern const unsigned char *cpp_macro_definition (cpp_reader *, 1024 cpp_hashnode *); 1025 inline location_t cpp_macro_definition_location (cpp_hashnode *node) 1026 { 1027 return node->value.macro->line; 1028 } 1029 extern void _cpp_backup_tokens (cpp_reader *, unsigned int); 1030 extern const cpp_token *cpp_peek_token (cpp_reader *, int); 1031 1032 /* Evaluate a CPP_*CHAR* token. */ 1033 extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *, 1034 unsigned int *, int *); 1035 /* Evaluate a vector of CPP_*STRING* tokens. */ 1036 extern bool cpp_interpret_string (cpp_reader *, 1037 const cpp_string *, size_t, 1038 cpp_string *, enum cpp_ttype); 1039 extern const char *cpp_interpret_string_ranges (cpp_reader *pfile, 1040 const cpp_string *from, 1041 cpp_string_location_reader *, 1042 size_t count, 1043 cpp_substring_ranges *out, 1044 enum cpp_ttype type); 1045 extern bool cpp_interpret_string_notranslate (cpp_reader *, 1046 const cpp_string *, size_t, 1047 cpp_string *, enum cpp_ttype); 1048 1049 /* Convert a host character constant to the execution character set. */ 1050 extern cppchar_t cpp_host_to_exec_charset (cpp_reader *, cppchar_t); 1051 1052 /* Used to register macros and assertions, perhaps from the command line. 1053 The text is the same as the command line argument. */ 1054 extern void cpp_define (cpp_reader *, const char *); 1055 extern void cpp_define_formatted (cpp_reader *pfile, 1056 const char *fmt, ...) ATTRIBUTE_PRINTF_2; 1057 extern void cpp_assert (cpp_reader *, const char *); 1058 extern void cpp_undef (cpp_reader *, const char *); 1059 extern void cpp_unassert (cpp_reader *, const char *); 1060 1061 /* Mark a node as a lazily defined macro. */ 1062 extern void cpp_define_lazily (cpp_reader *, cpp_hashnode *node, unsigned N); 1063 1064 /* Undefine all macros and assertions. */ 1065 extern void cpp_undef_all (cpp_reader *); 1066 1067 extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *, 1068 size_t, int); 1069 extern int cpp_defined (cpp_reader *, const unsigned char *, int); 1070 1071 /* A preprocessing number. Code assumes that any unused high bits of 1072 the double integer are set to zero. */ 1073 1074 /* This type has to be equal to unsigned HOST_WIDE_INT, see 1075 gcc/c-family/c-lex.c. */ 1076 typedef uint64_t cpp_num_part; 1077 typedef struct cpp_num cpp_num; 1078 struct cpp_num 1079 { 1080 cpp_num_part high; 1081 cpp_num_part low; 1082 bool unsignedp; /* True if value should be treated as unsigned. */ 1083 bool overflow; /* True if the most recent calculation overflowed. */ 1084 }; 1085 1086 /* cpplib provides two interfaces for interpretation of preprocessing 1087 numbers. 1088 1089 cpp_classify_number categorizes numeric constants according to 1090 their field (integer, floating point, or invalid), radix (decimal, 1091 octal, hexadecimal), and type suffixes. */ 1092 1093 #define CPP_N_CATEGORY 0x000F 1094 #define CPP_N_INVALID 0x0000 1095 #define CPP_N_INTEGER 0x0001 1096 #define CPP_N_FLOATING 0x0002 1097 1098 #define CPP_N_WIDTH 0x00F0 1099 #define CPP_N_SMALL 0x0010 /* int, float, short _Fract/Accum */ 1100 #define CPP_N_MEDIUM 0x0020 /* long, double, long _Fract/_Accum. */ 1101 #define CPP_N_LARGE 0x0040 /* long long, long double, 1102 long long _Fract/Accum. */ 1103 1104 #define CPP_N_WIDTH_MD 0xF0000 /* machine defined. */ 1105 #define CPP_N_MD_W 0x10000 1106 #define CPP_N_MD_Q 0x20000 1107 1108 #define CPP_N_RADIX 0x0F00 1109 #define CPP_N_DECIMAL 0x0100 1110 #define CPP_N_HEX 0x0200 1111 #define CPP_N_OCTAL 0x0400 1112 #define CPP_N_BINARY 0x0800 1113 1114 #define CPP_N_UNSIGNED 0x1000 /* Properties. */ 1115 #define CPP_N_IMAGINARY 0x2000 1116 #define CPP_N_DFLOAT 0x4000 1117 #define CPP_N_DEFAULT 0x8000 1118 1119 #define CPP_N_FRACT 0x100000 /* Fract types. */ 1120 #define CPP_N_ACCUM 0x200000 /* Accum types. */ 1121 #define CPP_N_FLOATN 0x400000 /* _FloatN types. */ 1122 #define CPP_N_FLOATNX 0x800000 /* _FloatNx types. */ 1123 1124 #define CPP_N_USERDEF 0x1000000 /* C++0x user-defined literal. */ 1125 1126 #define CPP_N_WIDTH_FLOATN_NX 0xF0000000 /* _FloatN / _FloatNx value 1127 of N, divided by 16. */ 1128 #define CPP_FLOATN_SHIFT 24 1129 #define CPP_FLOATN_MAX 0xF0 1130 1131 /* Classify a CPP_NUMBER token. The return value is a combination of 1132 the flags from the above sets. */ 1133 extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *, 1134 const char **, location_t); 1135 1136 /* Return the classification flags for a float suffix. */ 1137 extern unsigned int cpp_interpret_float_suffix (cpp_reader *, const char *, 1138 size_t); 1139 1140 /* Return the classification flags for an int suffix. */ 1141 extern unsigned int cpp_interpret_int_suffix (cpp_reader *, const char *, 1142 size_t); 1143 1144 /* Evaluate a token classified as category CPP_N_INTEGER. */ 1145 extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *, 1146 unsigned int); 1147 1148 /* Sign extend a number, with PRECISION significant bits and all 1149 others assumed clear, to fill out a cpp_num structure. */ 1150 cpp_num cpp_num_sign_extend (cpp_num, size_t); 1151 1152 /* Output a diagnostic of some kind. */ 1153 extern bool cpp_error (cpp_reader *, enum cpp_diagnostic_level, 1154 const char *msgid, ...) 1155 ATTRIBUTE_PRINTF_3; 1156 extern bool cpp_warning (cpp_reader *, enum cpp_warning_reason, 1157 const char *msgid, ...) 1158 ATTRIBUTE_PRINTF_3; 1159 extern bool cpp_pedwarning (cpp_reader *, enum cpp_warning_reason, 1160 const char *msgid, ...) 1161 ATTRIBUTE_PRINTF_3; 1162 extern bool cpp_warning_syshdr (cpp_reader *, enum cpp_warning_reason reason, 1163 const char *msgid, ...) 1164 ATTRIBUTE_PRINTF_3; 1165 1166 /* Output a diagnostic with "MSGID: " preceding the 1167 error string of errno. No location is printed. */ 1168 extern bool cpp_errno (cpp_reader *, enum cpp_diagnostic_level, 1169 const char *msgid); 1170 /* Similarly, but with "FILENAME: " instead of "MSGID: ", where 1171 the filename is not localized. */ 1172 extern bool cpp_errno_filename (cpp_reader *, enum cpp_diagnostic_level, 1173 const char *filename, location_t loc); 1174 1175 /* Same as cpp_error, except additionally specifies a position as a 1176 (translation unit) physical line and physical column. If the line is 1177 zero, then no location is printed. */ 1178 extern bool cpp_error_with_line (cpp_reader *, enum cpp_diagnostic_level, 1179 location_t, unsigned, 1180 const char *msgid, ...) 1181 ATTRIBUTE_PRINTF_5; 1182 extern bool cpp_warning_with_line (cpp_reader *, enum cpp_warning_reason, 1183 location_t, unsigned, 1184 const char *msgid, ...) 1185 ATTRIBUTE_PRINTF_5; 1186 extern bool cpp_pedwarning_with_line (cpp_reader *, enum cpp_warning_reason, 1187 location_t, unsigned, 1188 const char *msgid, ...) 1189 ATTRIBUTE_PRINTF_5; 1190 extern bool cpp_warning_with_line_syshdr (cpp_reader *, enum cpp_warning_reason, 1191 location_t, unsigned, 1192 const char *msgid, ...) 1193 ATTRIBUTE_PRINTF_5; 1194 1195 extern bool cpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level, 1196 location_t src_loc, const char *msgid, ...) 1197 ATTRIBUTE_PRINTF_4; 1198 1199 extern bool cpp_error_at (cpp_reader * pfile, enum cpp_diagnostic_level, 1200 rich_location *richloc, const char *msgid, ...) 1201 ATTRIBUTE_PRINTF_4; 1202 1203 /* In lex.c */ 1204 extern int cpp_ideq (const cpp_token *, const char *); 1205 extern void cpp_output_line (cpp_reader *, FILE *); 1206 extern unsigned char *cpp_output_line_to_string (cpp_reader *, 1207 const unsigned char *); 1208 extern void cpp_output_token (const cpp_token *, FILE *); 1209 extern const char *cpp_type2name (enum cpp_ttype, unsigned char flags); 1210 /* Returns the value of an escape sequence, truncated to the correct 1211 target precision. PSTR points to the input pointer, which is just 1212 after the backslash. LIMIT is how much text we have. WIDE is true 1213 if the escape sequence is part of a wide character constant or 1214 string literal. Handles all relevant diagnostics. */ 1215 extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr, 1216 const unsigned char *limit, int wide); 1217 1218 /* Structure used to hold a comment block at a given location in the 1219 source code. */ 1220 1221 typedef struct 1222 { 1223 /* Text of the comment including the terminators. */ 1224 char *comment; 1225 1226 /* source location for the given comment. */ 1227 location_t sloc; 1228 } cpp_comment; 1229 1230 /* Structure holding all comments for a given cpp_reader. */ 1231 1232 typedef struct 1233 { 1234 /* table of comment entries. */ 1235 cpp_comment *entries; 1236 1237 /* number of actual entries entered in the table. */ 1238 int count; 1239 1240 /* number of entries allocated currently. */ 1241 int allocated; 1242 } cpp_comment_table; 1243 1244 /* Returns the table of comments encountered by the preprocessor. This 1245 table is only populated when pfile->state.save_comments is true. */ 1246 extern cpp_comment_table *cpp_get_comments (cpp_reader *); 1247 1248 /* In hash.c */ 1249 1250 /* Lookup an identifier in the hashtable. Puts the identifier in the 1251 table if it is not already there. */ 1252 extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *, 1253 unsigned int); 1254 1255 typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *); 1256 extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *); 1257 1258 /* In macro.c */ 1259 extern void cpp_scan_nooutput (cpp_reader *); 1260 extern int cpp_sys_macro_p (cpp_reader *); 1261 extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *, 1262 unsigned int); 1263 1264 /* In files.c */ 1265 extern bool cpp_included (cpp_reader *, const char *); 1266 extern bool cpp_included_before (cpp_reader *, const char *, location_t); 1267 extern void cpp_make_system_header (cpp_reader *, int, int); 1268 extern bool cpp_push_include (cpp_reader *, const char *); 1269 extern bool cpp_push_default_include (cpp_reader *, const char *); 1270 extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *); 1271 extern const char *cpp_get_path (struct _cpp_file *); 1272 extern cpp_dir *cpp_get_dir (struct _cpp_file *); 1273 extern cpp_buffer *cpp_get_buffer (cpp_reader *); 1274 extern struct _cpp_file *cpp_get_file (cpp_buffer *); 1275 extern cpp_buffer *cpp_get_prev (cpp_buffer *); 1276 extern void cpp_clear_file_cache (cpp_reader *); 1277 1278 /* In pch.c */ 1279 struct save_macro_data; 1280 extern int cpp_save_state (cpp_reader *, FILE *); 1281 extern int cpp_write_pch_deps (cpp_reader *, FILE *); 1282 extern int cpp_write_pch_state (cpp_reader *, FILE *); 1283 extern int cpp_valid_state (cpp_reader *, const char *, int); 1284 extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **); 1285 extern int cpp_read_state (cpp_reader *, const char *, FILE *, 1286 struct save_macro_data *); 1287 1288 /* In lex.c */ 1289 extern void cpp_force_token_locations (cpp_reader *, location_t); 1290 extern void cpp_stop_forcing_token_locations (cpp_reader *); 1291 1292 /* In expr.c */ 1293 extern enum cpp_ttype cpp_userdef_string_remove_type 1294 (enum cpp_ttype type); 1295 extern enum cpp_ttype cpp_userdef_string_add_type 1296 (enum cpp_ttype type); 1297 extern enum cpp_ttype cpp_userdef_char_remove_type 1298 (enum cpp_ttype type); 1299 extern enum cpp_ttype cpp_userdef_char_add_type 1300 (enum cpp_ttype type); 1301 extern bool cpp_userdef_string_p 1302 (enum cpp_ttype type); 1303 extern bool cpp_userdef_char_p 1304 (enum cpp_ttype type); 1305 extern const char * cpp_get_userdef_suffix 1306 (const cpp_token *); 1307 1308 #endif /* ! LIBCPP_CPPLIB_H */ 1309