Mercurial > hg > CbC > CbC_gcc
annotate libcpp/include/cpplib.h @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | f6334be47118 |
| children | 84e7813d76e9 |
| rev | line source |
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| 0 | 1 /* Definitions for CPP library. |
| 111 | 2 Copyright (C) 1995-2017 Free Software Foundation, Inc. |
| 0 | 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' */ \ | |
| 111 | 122 TK(UTF8CHAR, LITERAL) /* u8'char' */ \ |
| 0 | 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" */ \ | |
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129 TK(UTF8STRING, LITERAL) /* u8"string" */ \ |
| 0 | 130 TK(OBJC_STRING, LITERAL) /* @"string" - Objective-C */ \ |
| 131 TK(HEADER_NAME, LITERAL) /* <stdio.h> in #include */ \ | |
| 132 \ | |
| 111 | 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 \ | |
| 0 | 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 | |
| 111 | 158 /* A token type for keywords, as opposed to ordinary identifiers. */ |
| 159 CPP_KEYWORD, | |
| 160 | |
| 0 | 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. */ | |
| 111 | 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_GNUCXX17, CLK_CXX17, | |
| 175 CLK_GNUCXX2A, CLK_CXX2A, CLK_ASM}; | |
| 0 | 176 |
| 177 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */ | |
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178 struct GTY(()) cpp_string { |
| 0 | 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. */ | |
| 111 | 189 #define PREV_FALLTHROUGH (1 << 5) /* On a token preceeded by FALLTHROUGH |
| 190 comment. */ | |
| 0 | 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. */ | |
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194 #define SP_DIGRAPH (1 << 8) /* # or ## token was a digraph. */ |
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195 #define SP_PREV_WHITE (1 << 9) /* If whitespace before a ## |
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196 operator, or before this token |
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197 after a # operator. */ |
| 111 | 198 #define NO_EXPAND (1 << 10) /* Do not macro-expand this token. */ |
| 0 | 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, | |
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207 CPP_TOKEN_FLD_TOKEN_NO, |
| 0 | 208 CPP_TOKEN_FLD_PRAGMA, |
| 209 CPP_TOKEN_FLD_NONE | |
| 210 }; | |
| 211 | |
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212 /* A macro argument in the cpp_token union. */ |
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213 struct GTY(()) cpp_macro_arg { |
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214 /* Argument number. */ |
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215 unsigned int arg_no; |
| 111 | 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; | |
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222 }; |
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223 |
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224 /* An identifier in the cpp_token union. */ |
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225 struct GTY(()) cpp_identifier { |
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226 /* The canonical (UTF-8) spelling of the identifier. */ |
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227 cpp_hashnode * |
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228 GTY ((nested_ptr (union tree_node, |
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229 "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", |
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230 "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) |
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231 node; |
| 111 | 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; | |
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238 }; |
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239 |
| 0 | 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. */ | |
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242 struct GTY(()) cpp_token { |
| 111 | 243 source_location src_loc; /* Location of first char of token, |
| 244 together with range of full token. */ | |
| 0 | 245 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */ |
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246 unsigned short flags; /* flags - see above */ |
| 0 | 247 |
| 248 union cpp_token_u | |
| 249 { | |
| 250 /* An identifier. */ | |
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251 struct cpp_identifier GTY ((tag ("CPP_TOKEN_FLD_NODE"))) node; |
| 0 | 252 |
| 253 /* Inherit padding from this token. */ | |
| 254 cpp_token * GTY ((tag ("CPP_TOKEN_FLD_SOURCE"))) source; | |
| 255 | |
| 256 /* A string, or number. */ | |
| 257 struct cpp_string GTY ((tag ("CPP_TOKEN_FLD_STR"))) str; | |
| 258 | |
| 111 | 259 /* Argument no. (and original spelling) for a CPP_MACRO_ARG. */ |
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260 struct cpp_macro_arg GTY ((tag ("CPP_TOKEN_FLD_ARG_NO"))) macro_arg; |
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261 |
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262 /* Original token no. for a CPP_PASTE (from a sequence of |
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263 consecutive paste tokens in a macro expansion). */ |
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264 unsigned int GTY ((tag ("CPP_TOKEN_FLD_TOKEN_NO"))) token_no; |
| 0 | 265 |
| 266 /* Caller-supplied identifier for a CPP_PRAGMA. */ | |
| 267 unsigned int GTY ((tag ("CPP_TOKEN_FLD_PRAGMA"))) pragma; | |
| 268 } GTY ((desc ("cpp_token_val_index (&%1)"))) val; | |
| 269 }; | |
| 270 | |
| 271 /* Say which field is in use. */ | |
| 111 | 272 extern enum cpp_token_fld_kind cpp_token_val_index (const cpp_token *tok); |
| 0 | 273 |
| 274 /* A type wide enough to hold any multibyte source character. | |
| 275 cpplib's character constant interpreter requires an unsigned type. | |
| 276 Also, a typedef for the signed equivalent. | |
| 277 The width of this type is capped at 32 bits; there do exist targets | |
| 278 where wchar_t is 64 bits, but only in a non-default mode, and there | |
| 279 would be no meaningful interpretation for a wchar_t value greater | |
| 280 than 2^32 anyway -- the widest wide-character encoding around is | |
| 281 ISO 10646, which stops at 2^31. */ | |
| 282 #if CHAR_BIT * SIZEOF_INT >= 32 | |
| 283 # define CPPCHAR_SIGNED_T int | |
| 284 #elif CHAR_BIT * SIZEOF_LONG >= 32 | |
| 285 # define CPPCHAR_SIGNED_T long | |
| 286 #else | |
| 287 # error "Cannot find a least-32-bit signed integer type" | |
| 288 #endif | |
| 289 typedef unsigned CPPCHAR_SIGNED_T cppchar_t; | |
| 290 typedef CPPCHAR_SIGNED_T cppchar_signed_t; | |
| 291 | |
| 292 /* Style of header dependencies to generate. */ | |
| 293 enum cpp_deps_style { DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM }; | |
| 294 | |
| 295 /* The possible normalization levels, from most restrictive to least. */ | |
| 296 enum cpp_normalize_level { | |
| 297 /* In NFKC. */ | |
| 298 normalized_KC = 0, | |
| 299 /* In NFC. */ | |
| 300 normalized_C, | |
| 301 /* In NFC, except for subsequences where being in NFC would make | |
| 302 the identifier invalid. */ | |
| 303 normalized_identifier_C, | |
| 304 /* Not normalized at all. */ | |
| 305 normalized_none | |
| 306 }; | |
| 307 | |
| 308 /* This structure is nested inside struct cpp_reader, and | |
| 309 carries all the options visible to the command line. */ | |
| 310 struct cpp_options | |
| 311 { | |
| 312 /* Characters between tab stops. */ | |
| 313 unsigned int tabstop; | |
| 314 | |
| 315 /* The language we're preprocessing. */ | |
| 316 enum c_lang lang; | |
| 317 | |
| 318 /* Nonzero means use extra default include directories for C++. */ | |
| 319 unsigned char cplusplus; | |
| 320 | |
| 321 /* Nonzero means handle cplusplus style comments. */ | |
| 322 unsigned char cplusplus_comments; | |
| 323 | |
| 324 /* Nonzero means define __OBJC__, treat @ as a special token, use | |
| 325 the OBJC[PLUS]_INCLUDE_PATH environment variable, and allow | |
| 326 "#import". */ | |
| 327 unsigned char objc; | |
| 328 | |
| 329 /* Nonzero means don't copy comments into the output file. */ | |
| 330 unsigned char discard_comments; | |
| 331 | |
| 332 /* Nonzero means don't copy comments into the output file during | |
| 333 macro expansion. */ | |
| 334 unsigned char discard_comments_in_macro_exp; | |
| 335 | |
| 336 /* Nonzero means process the ISO trigraph sequences. */ | |
| 337 unsigned char trigraphs; | |
| 338 | |
| 339 /* Nonzero means process the ISO digraph sequences. */ | |
| 340 unsigned char digraphs; | |
| 341 | |
| 342 /* Nonzero means to allow hexadecimal floats and LL suffixes. */ | |
| 343 unsigned char extended_numbers; | |
| 344 | |
| 345 /* Nonzero means process u/U prefix literals (UTF-16/32). */ | |
| 346 unsigned char uliterals; | |
| 347 | |
| 111 | 348 /* Nonzero means process u8 prefixed character literals (UTF-8). */ |
| 349 unsigned char utf8_char_literals; | |
| 350 | |
| 351 /* Nonzero means process r/R raw strings. If this is set, uliterals | |
| 352 must be set as well. */ | |
| 353 unsigned char rliterals; | |
| 354 | |
| 0 | 355 /* Nonzero means print names of header files (-H). */ |
| 356 unsigned char print_include_names; | |
| 357 | |
| 358 /* Nonzero means complain about deprecated features. */ | |
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359 unsigned char cpp_warn_deprecated; |
| 0 | 360 |
| 361 /* Nonzero means warn if slash-star appears in a comment. */ | |
| 362 unsigned char warn_comments; | |
| 363 | |
| 111 | 364 /* Nonzero means to warn about __DATA__, __TIME__ and __TIMESTAMP__ usage. */ |
| 365 unsigned char warn_date_time; | |
| 366 | |
| 0 | 367 /* Nonzero means warn if a user-supplied include directory does not |
| 368 exist. */ | |
| 369 unsigned char warn_missing_include_dirs; | |
| 370 | |
| 371 /* Nonzero means warn if there are any trigraphs. */ | |
| 372 unsigned char warn_trigraphs; | |
| 373 | |
| 374 /* Nonzero means warn about multicharacter charconsts. */ | |
| 375 unsigned char warn_multichar; | |
| 376 | |
| 377 /* Nonzero means warn about various incompatibilities with | |
| 378 traditional C. */ | |
|
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379 unsigned char cpp_warn_traditional; |
| 0 | 380 |
| 381 /* Nonzero means warn about long long numeric constants. */ | |
|
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382 unsigned char cpp_warn_long_long; |
| 0 | 383 |
| 384 /* Nonzero means warn about text after an #endif (or #else). */ | |
| 385 unsigned char warn_endif_labels; | |
| 386 | |
| 387 /* Nonzero means warn about implicit sign changes owing to integer | |
| 388 promotions. */ | |
| 389 unsigned char warn_num_sign_change; | |
| 390 | |
| 391 /* Zero means don't warn about __VA_ARGS__ usage in c89 pedantic mode. | |
| 392 Presumably the usage is protected by the appropriate #ifdef. */ | |
| 393 unsigned char warn_variadic_macros; | |
| 394 | |
| 395 /* Nonzero means warn about builtin macros that are redefined or | |
| 396 explicitly undefined. */ | |
| 397 unsigned char warn_builtin_macro_redefined; | |
| 398 | |
| 111 | 399 /* Different -Wimplicit-fallthrough= levels. */ |
| 400 unsigned char cpp_warn_implicit_fallthrough; | |
| 401 | |
| 0 | 402 /* Nonzero means we should look for header.gcc files that remap file |
| 403 names. */ | |
| 404 unsigned char remap; | |
| 405 | |
| 406 /* Zero means dollar signs are punctuation. */ | |
| 407 unsigned char dollars_in_ident; | |
| 408 | |
| 409 /* Nonzero means UCNs are accepted in identifiers. */ | |
| 410 unsigned char extended_identifiers; | |
| 411 | |
| 412 /* True if we should warn about dollars in identifiers or numbers | |
| 413 for this translation unit. */ | |
| 414 unsigned char warn_dollars; | |
| 415 | |
| 416 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */ | |
| 417 unsigned char warn_undef; | |
| 418 | |
| 111 | 419 /* Nonzero means warn if "defined" is encountered in a place other than |
| 420 an #if. */ | |
| 421 unsigned char warn_expansion_to_defined; | |
| 422 | |
| 0 | 423 /* Nonzero means warn of unused macros from the main file. */ |
| 424 unsigned char warn_unused_macros; | |
| 425 | |
| 426 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */ | |
| 427 unsigned char c99; | |
| 428 | |
| 429 /* Nonzero if we are conforming to a specific C or C++ standard. */ | |
| 430 unsigned char std; | |
| 431 | |
| 432 /* Nonzero means give all the error messages the ANSI standard requires. */ | |
|
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433 unsigned char cpp_pedantic; |
| 0 | 434 |
| 435 /* Nonzero means we're looking at already preprocessed code, so don't | |
| 436 bother trying to do macro expansion and whatnot. */ | |
| 437 unsigned char preprocessed; | |
| 111 | 438 |
| 439 /* Nonzero means we are going to emit debugging logs during | |
| 440 preprocessing. */ | |
| 441 unsigned char debug; | |
| 442 | |
| 443 /* Nonzero means we are tracking locations of tokens involved in | |
| 444 macro expansion. 1 Means we track the location in degraded mode | |
| 445 where we do not track locations of tokens resulting from the | |
| 446 expansion of arguments of function-like macro. 2 Means we do | |
| 447 track all macro expansions. This last option is the one that | |
| 448 consumes the highest amount of memory. */ | |
| 449 unsigned char track_macro_expansion; | |
| 0 | 450 |
| 451 /* Nonzero means handle C++ alternate operator names. */ | |
| 452 unsigned char operator_names; | |
| 453 | |
|
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454 /* Nonzero means warn about use of C++ alternate operator names. */ |
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455 unsigned char warn_cxx_operator_names; |
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456 |
| 0 | 457 /* True for traditional preprocessing. */ |
| 458 unsigned char traditional; | |
| 459 | |
| 111 | 460 /* Nonzero for C++ 2011 Standard user-defined literals. */ |
| 461 unsigned char user_literals; | |
| 462 | |
| 463 /* Nonzero means warn when a string or character literal is followed by a | |
| 464 ud-suffix which does not beging with an underscore. */ | |
| 465 unsigned char warn_literal_suffix; | |
| 466 | |
| 467 /* Nonzero means interpret imaginary, fixed-point, or other gnu extension | |
| 468 literal number suffixes as user-defined literal number suffixes. */ | |
| 469 unsigned char ext_numeric_literals; | |
| 470 | |
| 471 /* Nonzero means extended identifiers allow the characters specified | |
| 472 in C11 and C++11. */ | |
| 473 unsigned char c11_identifiers; | |
| 474 | |
| 475 /* Nonzero for C++ 2014 Standard binary constants. */ | |
| 476 unsigned char binary_constants; | |
| 477 | |
| 478 /* Nonzero for C++ 2014 Standard digit separators. */ | |
| 479 unsigned char digit_separators; | |
| 480 | |
| 0 | 481 /* Holds the name of the target (execution) character set. */ |
| 482 const char *narrow_charset; | |
| 483 | |
| 484 /* Holds the name of the target wide character set. */ | |
| 485 const char *wide_charset; | |
| 486 | |
| 487 /* Holds the name of the input character set. */ | |
| 488 const char *input_charset; | |
| 489 | |
| 490 /* The minimum permitted level of normalization before a warning | |
| 111 | 491 is generated. See enum cpp_normalize_level. */ |
| 492 int warn_normalize; | |
| 0 | 493 |
| 494 /* True to warn about precompiled header files we couldn't use. */ | |
| 495 bool warn_invalid_pch; | |
| 496 | |
| 497 /* True if dependencies should be restored from a precompiled header. */ | |
| 498 bool restore_pch_deps; | |
| 499 | |
| 111 | 500 /* True if warn about differences between C90 and C99. */ |
| 501 signed char cpp_warn_c90_c99_compat; | |
| 502 | |
| 503 /* True if warn about differences between C++98 and C++11. */ | |
| 504 bool cpp_warn_cxx11_compat; | |
| 505 | |
| 0 | 506 /* Dependency generation. */ |
| 507 struct | |
| 508 { | |
| 509 /* Style of header dependencies to generate. */ | |
| 510 enum cpp_deps_style style; | |
| 511 | |
| 512 /* Assume missing files are generated files. */ | |
| 513 bool missing_files; | |
| 514 | |
| 515 /* Generate phony targets for each dependency apart from the first | |
| 516 one. */ | |
| 517 bool phony_targets; | |
| 518 | |
| 519 /* If true, no dependency is generated on the main file. */ | |
| 520 bool ignore_main_file; | |
|
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521 |
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522 /* If true, intend to use the preprocessor output (e.g., for compilation) |
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523 in addition to the dependency info. */ |
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524 bool need_preprocessor_output; |
| 0 | 525 } deps; |
| 526 | |
| 527 /* Target-specific features set by the front end or client. */ | |
| 528 | |
| 529 /* Precision for target CPP arithmetic, target characters, target | |
| 530 ints and target wide characters, respectively. */ | |
| 531 size_t precision, char_precision, int_precision, wchar_precision; | |
| 532 | |
| 533 /* True means chars (wide chars) are unsigned. */ | |
| 534 bool unsigned_char, unsigned_wchar; | |
| 535 | |
| 536 /* True if the most significant byte in a word has the lowest | |
| 537 address in memory. */ | |
| 538 bool bytes_big_endian; | |
| 539 | |
| 540 /* Nonzero means __STDC__ should have the value 0 in system headers. */ | |
| 541 unsigned char stdc_0_in_system_headers; | |
| 542 | |
| 543 /* True disables tokenization outside of preprocessing directives. */ | |
| 544 bool directives_only; | |
| 111 | 545 |
| 546 /* True enables canonicalization of system header file paths. */ | |
| 547 bool canonical_system_headers; | |
| 0 | 548 }; |
| 549 | |
| 550 /* Callback for header lookup for HEADER, which is the name of a | |
| 551 source file. It is used as a method of last resort to find headers | |
| 552 that are not otherwise found during the normal include processing. | |
| 553 The return value is the malloced name of a header to try and open, | |
| 554 if any, or NULL otherwise. This callback is called only if the | |
| 555 header is otherwise unfound. */ | |
| 556 typedef const char *(*missing_header_cb)(cpp_reader *, const char *header, cpp_dir **); | |
| 557 | |
| 558 /* Call backs to cpplib client. */ | |
| 559 struct cpp_callbacks | |
| 560 { | |
| 561 /* Called when a new line of preprocessed output is started. */ | |
| 562 void (*line_change) (cpp_reader *, const cpp_token *, int); | |
| 563 | |
| 564 /* Called when switching to/from a new file. | |
| 565 The line_map is for the new file. It is NULL if there is no new file. | |
| 566 (In C this happens when done with <built-in>+<command line> and also | |
| 567 when done with a main file.) This can be used for resource cleanup. */ | |
| 111 | 568 void (*file_change) (cpp_reader *, const line_map_ordinary *); |
| 0 | 569 |
| 570 void (*dir_change) (cpp_reader *, const char *); | |
| 111 | 571 void (*include) (cpp_reader *, source_location, const unsigned char *, |
| 0 | 572 const char *, int, const cpp_token **); |
| 111 | 573 void (*define) (cpp_reader *, source_location, cpp_hashnode *); |
| 574 void (*undef) (cpp_reader *, source_location, cpp_hashnode *); | |
| 575 void (*ident) (cpp_reader *, source_location, const cpp_string *); | |
| 576 void (*def_pragma) (cpp_reader *, source_location); | |
| 0 | 577 int (*valid_pch) (cpp_reader *, const char *, int); |
| 578 void (*read_pch) (cpp_reader *, const char *, int, const char *); | |
| 579 missing_header_cb missing_header; | |
| 580 | |
| 581 /* Context-sensitive macro support. Returns macro (if any) that should | |
| 582 be expanded. */ | |
| 583 cpp_hashnode * (*macro_to_expand) (cpp_reader *, const cpp_token *); | |
| 584 | |
|
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585 /* Called to emit a diagnostic. This callback receives the |
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586 translated message. */ |
| 111 | 587 bool (*error) (cpp_reader *, int, int, rich_location *, |
|
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588 const char *, va_list *) |
| 111 | 589 ATTRIBUTE_FPTR_PRINTF(5,0); |
| 0 | 590 |
| 591 /* Callbacks for when a macro is expanded, or tested (whether | |
| 592 defined or not at the time) in #ifdef, #ifndef or "defined". */ | |
| 111 | 593 void (*used_define) (cpp_reader *, source_location, cpp_hashnode *); |
| 594 void (*used_undef) (cpp_reader *, source_location, cpp_hashnode *); | |
| 0 | 595 /* Called before #define and #undef or other macro definition |
| 596 changes are processed. */ | |
| 597 void (*before_define) (cpp_reader *); | |
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598 /* Called whenever a macro is expanded or tested. |
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599 Second argument is the location of the start of the current expansion. */ |
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600 void (*used) (cpp_reader *, source_location, cpp_hashnode *); |
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601 |
| 111 | 602 /* Callback to identify whether an attribute exists. */ |
| 603 int (*has_attribute) (cpp_reader *); | |
| 604 | |
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605 /* Callback that can change a user builtin into normal macro. */ |
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606 bool (*user_builtin_macro) (cpp_reader *, cpp_hashnode *); |
| 111 | 607 |
| 608 /* Callback to parse SOURCE_DATE_EPOCH from environment. */ | |
| 609 time_t (*get_source_date_epoch) (cpp_reader *); | |
| 610 | |
| 611 /* Callback for providing suggestions for misspelled directives. */ | |
| 612 const char *(*get_suggestion) (cpp_reader *, const char *, const char *const *); | |
| 613 | |
| 614 /* Callback for when a comment is encountered, giving the location | |
| 615 of the opening slash, a pointer to the content (which is not | |
| 616 necessarily 0-terminated), and the length of the content. | |
| 617 The content contains the opening slash-star (or slash-slash), | |
| 618 and for C-style comments contains the closing star-slash. For | |
| 619 C++-style comments it does not include the terminating newline. */ | |
| 620 void (*comment) (cpp_reader *, source_location, const unsigned char *, | |
| 621 size_t); | |
| 0 | 622 }; |
| 623 | |
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624 #ifdef VMS |
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625 #define INO_T_CPP ino_t ino[3] |
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626 #else |
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627 #define INO_T_CPP ino_t ino |
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628 #endif |
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629 |
| 0 | 630 /* Chain of directories to look for include files in. */ |
| 631 struct cpp_dir | |
| 632 { | |
| 633 /* NULL-terminated singly-linked list. */ | |
| 634 struct cpp_dir *next; | |
| 635 | |
| 636 /* NAME of the directory, NUL-terminated. */ | |
| 637 char *name; | |
| 638 unsigned int len; | |
| 639 | |
| 640 /* One if a system header, two if a system header that has extern | |
| 641 "C" guards for C++. */ | |
| 642 unsigned char sysp; | |
| 643 | |
| 644 /* Is this a user-supplied directory? */ | |
| 645 bool user_supplied_p; | |
| 646 | |
| 647 /* The canonicalized NAME as determined by lrealpath. This field | |
| 648 is only used by hosts that lack reliable inode numbers. */ | |
| 649 char *canonical_name; | |
| 650 | |
| 651 /* Mapping of file names for this directory for MS-DOS and related | |
| 652 platforms. A NULL-terminated array of (from, to) pairs. */ | |
| 653 const char **name_map; | |
| 654 | |
| 655 /* Routine to construct pathname, given the search path name and the | |
| 656 HEADER we are trying to find, return a constructed pathname to | |
| 657 try and open. If this is NULL, the constructed pathname is as | |
| 658 constructed by append_file_to_dir. */ | |
| 659 char *(*construct) (const char *header, cpp_dir *dir); | |
| 660 | |
| 661 /* The C front end uses these to recognize duplicated | |
| 662 directories in the search path. */ | |
|
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663 INO_T_CPP; |
| 0 | 664 dev_t dev; |
| 665 }; | |
| 666 | |
| 667 /* The structure of a node in the hash table. The hash table has | |
| 668 entries for all identifiers: either macros defined by #define | |
| 669 commands (type NT_MACRO), assertions created with #assert | |
| 670 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros | |
| 671 like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are | |
| 672 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an | |
| 673 identifier that behaves like an operator such as "xor". | |
| 674 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a | |
| 675 diagnostic may be required for this node. Currently this only | |
|
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676 applies to __VA_ARGS__, poisoned identifiers, and -Wc++-compat |
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677 warnings about NODE_OPERATOR. */ |
| 0 | 678 |
| 679 /* Hash node flags. */ | |
| 680 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */ | |
| 681 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */ | |
| 682 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */ | |
| 683 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */ | |
| 684 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */ | |
| 685 #define NODE_DISABLED (1 << 5) /* A disabled macro. */ | |
| 686 #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */ | |
| 687 #define NODE_USED (1 << 7) /* Dumped with -dU. */ | |
| 688 #define NODE_CONDITIONAL (1 << 8) /* Conditional macro */ | |
|
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689 #define NODE_WARN_OPERATOR (1 << 9) /* Warn about C++ named operator. */ |
| 0 | 690 |
| 691 /* Different flavors of hash node. */ | |
| 692 enum node_type | |
| 693 { | |
| 694 NT_VOID = 0, /* No definition yet. */ | |
| 695 NT_MACRO, /* A macro of some form. */ | |
| 696 NT_ASSERTION /* Predicate for #assert. */ | |
| 697 }; | |
| 698 | |
| 699 /* Different flavors of builtin macro. _Pragma is an operator, but we | |
| 700 handle it with the builtin code for efficiency reasons. */ | |
|
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701 enum cpp_builtin_type |
| 0 | 702 { |
| 703 BT_SPECLINE = 0, /* `__LINE__' */ | |
| 704 BT_DATE, /* `__DATE__' */ | |
| 705 BT_FILE, /* `__FILE__' */ | |
| 706 BT_BASE_FILE, /* `__BASE_FILE__' */ | |
| 707 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ | |
| 708 BT_TIME, /* `__TIME__' */ | |
| 709 BT_STDC, /* `__STDC__' */ | |
| 710 BT_PRAGMA, /* `_Pragma' operator */ | |
| 711 BT_TIMESTAMP, /* `__TIMESTAMP__' */ | |
|
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712 BT_COUNTER, /* `__COUNTER__' */ |
| 111 | 713 BT_HAS_ATTRIBUTE, /* `__has_attribute__(x)' */ |
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714 BT_FIRST_USER, /* User defined builtin macros. */ |
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715 BT_LAST_USER = BT_FIRST_USER + 31 |
| 0 | 716 }; |
| 717 | |
| 718 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE)) | |
| 719 #define HT_NODE(NODE) ((ht_identifier *) (NODE)) | |
| 720 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident) | |
| 721 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident) | |
| 722 | |
| 723 /* Specify which field, if any, of the union is used. */ | |
| 724 | |
| 725 enum { | |
| 726 NTV_MACRO, | |
| 727 NTV_ANSWER, | |
| 728 NTV_BUILTIN, | |
| 729 NTV_ARGUMENT, | |
| 730 NTV_NONE | |
| 731 }; | |
| 732 | |
| 733 #define CPP_HASHNODE_VALUE_IDX(HNODE) \ | |
| 734 ((HNODE.flags & NODE_MACRO_ARG) ? NTV_ARGUMENT \ | |
| 735 : HNODE.type == NT_MACRO ? ((HNODE.flags & NODE_BUILTIN) \ | |
| 736 ? NTV_BUILTIN : NTV_MACRO) \ | |
| 737 : HNODE.type == NT_ASSERTION ? NTV_ANSWER \ | |
| 738 : NTV_NONE) | |
| 739 | |
| 740 /* The common part of an identifier node shared amongst all 3 C front | |
| 741 ends. Also used to store CPP identifiers, which are a superset of | |
| 742 identifiers in the grammatical sense. */ | |
| 743 | |
|
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744 union GTY(()) _cpp_hashnode_value { |
| 0 | 745 /* If a macro. */ |
| 746 cpp_macro * GTY((tag ("NTV_MACRO"))) macro; | |
| 747 /* Answers to an assertion. */ | |
| 748 struct answer * GTY ((tag ("NTV_ANSWER"))) answers; | |
| 749 /* Code for a builtin macro. */ | |
|
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750 enum cpp_builtin_type GTY ((tag ("NTV_BUILTIN"))) builtin; |
| 0 | 751 /* Macro argument index. */ |
| 752 unsigned short GTY ((tag ("NTV_ARGUMENT"))) arg_index; | |
| 753 }; | |
| 754 | |
|
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755 struct GTY(()) cpp_hashnode { |
| 0 | 756 struct ht_identifier ident; |
| 757 unsigned int is_directive : 1; | |
| 758 unsigned int directive_index : 7; /* If is_directive, | |
| 759 then index into directive table. | |
| 760 Otherwise, a NODE_OPERATOR. */ | |
| 761 unsigned char rid_code; /* Rid code - for front ends. */ | |
|
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762 ENUM_BITFIELD(node_type) type : 6; /* CPP node type. */ |
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763 unsigned int flags : 10; /* CPP flags. */ |
| 0 | 764 |
| 765 union _cpp_hashnode_value GTY ((desc ("CPP_HASHNODE_VALUE_IDX (%1)"))) value; | |
| 766 }; | |
| 767 | |
| 111 | 768 /* A class for iterating through the source locations within a |
| 769 string token (before escapes are interpreted, and before | |
| 770 concatenation). */ | |
| 771 | |
| 772 class cpp_string_location_reader { | |
| 773 public: | |
| 774 cpp_string_location_reader (source_location src_loc, | |
| 775 line_maps *line_table); | |
| 776 | |
| 777 source_range get_next (); | |
| 778 | |
| 779 private: | |
| 780 source_location m_loc; | |
| 781 int m_offset_per_column; | |
| 782 line_maps *m_line_table; | |
| 783 }; | |
| 784 | |
| 785 /* A class for storing the source ranges of all of the characters within | |
| 786 a string literal, after escapes are interpreted, and after | |
| 787 concatenation. | |
| 788 | |
| 789 This is not GTY-marked, as instances are intended to be temporary. */ | |
| 790 | |
| 791 class cpp_substring_ranges | |
| 792 { | |
| 793 public: | |
| 794 cpp_substring_ranges (); | |
| 795 ~cpp_substring_ranges (); | |
| 796 | |
| 797 int get_num_ranges () const { return m_num_ranges; } | |
| 798 source_range get_range (int idx) const | |
| 799 { | |
| 800 linemap_assert (idx < m_num_ranges); | |
| 801 return m_ranges[idx]; | |
| 802 } | |
| 803 | |
| 804 void add_range (source_range range); | |
| 805 void add_n_ranges (int num, cpp_string_location_reader &loc_reader); | |
| 806 | |
| 807 private: | |
| 808 source_range *m_ranges; | |
| 809 int m_num_ranges; | |
| 810 int m_alloc_ranges; | |
| 811 }; | |
| 812 | |
| 0 | 813 /* Call this first to get a handle to pass to other functions. |
| 814 | |
| 815 If you want cpplib to manage its own hashtable, pass in a NULL | |
| 816 pointer. Otherwise you should pass in an initialized hash table | |
| 817 that cpplib will share; this technique is used by the C front | |
| 818 ends. */ | |
| 819 extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *, | |
| 820 struct line_maps *); | |
| 821 | |
| 822 /* Reset the cpp_reader's line_map. This is only used after reading a | |
| 823 PCH file. */ | |
| 824 extern void cpp_set_line_map (cpp_reader *, struct line_maps *); | |
| 825 | |
| 826 /* Call this to change the selected language standard (e.g. because of | |
| 827 command line options). */ | |
| 828 extern void cpp_set_lang (cpp_reader *, enum c_lang); | |
| 829 | |
| 830 /* Set the include paths. */ | |
| 831 extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int); | |
| 832 | |
| 833 /* Call these to get pointers to the options, callback, and deps | |
| 834 structures for a given reader. These pointers are good until you | |
| 835 call cpp_finish on that reader. You can either edit the callbacks | |
| 836 through the pointer returned from cpp_get_callbacks, or set them | |
| 837 with cpp_set_callbacks. */ | |
| 838 extern cpp_options *cpp_get_options (cpp_reader *); | |
| 839 extern cpp_callbacks *cpp_get_callbacks (cpp_reader *); | |
| 840 extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *); | |
| 841 extern struct deps *cpp_get_deps (cpp_reader *); | |
| 842 | |
| 843 /* This function reads the file, but does not start preprocessing. It | |
| 844 returns the name of the original file; this is the same as the | |
| 845 input file, except for preprocessed input. This will generate at | |
| 846 least one file change callback, and possibly a line change callback | |
| 847 too. If there was an error opening the file, it returns NULL. */ | |
| 848 extern const char *cpp_read_main_file (cpp_reader *, const char *); | |
| 849 | |
| 850 /* Set up built-ins with special behavior. Use cpp_init_builtins() | |
| 851 instead unless your know what you are doing. */ | |
| 852 extern void cpp_init_special_builtins (cpp_reader *); | |
| 853 | |
| 854 /* Set up built-ins like __FILE__. */ | |
| 855 extern void cpp_init_builtins (cpp_reader *, int); | |
| 856 | |
| 857 /* This is called after options have been parsed, and partially | |
| 858 processed. */ | |
| 859 extern void cpp_post_options (cpp_reader *); | |
| 860 | |
| 861 /* Set up translation to the target character set. */ | |
| 862 extern void cpp_init_iconv (cpp_reader *); | |
| 863 | |
| 864 /* Call this to finish preprocessing. If you requested dependency | |
| 865 generation, pass an open stream to write the information to, | |
|
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866 otherwise NULL. It is your responsibility to close the stream. */ |
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867 extern void cpp_finish (cpp_reader *, FILE *deps_stream); |
| 0 | 868 |
| 869 /* Call this to release the handle at the end of preprocessing. Any | |
|
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870 use of the handle after this function returns is invalid. */ |
| 0 | 871 extern void cpp_destroy (cpp_reader *); |
| 872 | |
| 873 extern unsigned int cpp_token_len (const cpp_token *); | |
| 874 extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *); | |
| 875 extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *, | |
| 876 unsigned char *, bool); | |
| 877 extern void cpp_register_pragma (cpp_reader *, const char *, const char *, | |
| 878 void (*) (cpp_reader *), bool); | |
| 879 extern void cpp_register_deferred_pragma (cpp_reader *, const char *, | |
| 880 const char *, unsigned, bool, bool); | |
| 881 extern int cpp_avoid_paste (cpp_reader *, const cpp_token *, | |
| 882 const cpp_token *); | |
| 883 extern const cpp_token *cpp_get_token (cpp_reader *); | |
| 884 extern const cpp_token *cpp_get_token_with_location (cpp_reader *, | |
| 885 source_location *); | |
| 111 | 886 extern bool cpp_fun_like_macro_p (cpp_hashnode *); |
| 0 | 887 extern const unsigned char *cpp_macro_definition (cpp_reader *, |
|
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888 cpp_hashnode *); |
| 0 | 889 extern void _cpp_backup_tokens (cpp_reader *, unsigned int); |
| 890 extern const cpp_token *cpp_peek_token (cpp_reader *, int); | |
| 891 | |
|
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892 /* Evaluate a CPP_*CHAR* token. */ |
| 0 | 893 extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *, |
| 894 unsigned int *, int *); | |
|
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895 /* Evaluate a vector of CPP_*STRING* tokens. */ |
| 0 | 896 extern bool cpp_interpret_string (cpp_reader *, |
| 897 const cpp_string *, size_t, | |
| 898 cpp_string *, enum cpp_ttype); | |
| 111 | 899 extern const char *cpp_interpret_string_ranges (cpp_reader *pfile, |
| 900 const cpp_string *from, | |
| 901 cpp_string_location_reader *, | |
| 902 size_t count, | |
| 903 cpp_substring_ranges *out, | |
| 904 enum cpp_ttype type); | |
| 0 | 905 extern bool cpp_interpret_string_notranslate (cpp_reader *, |
| 906 const cpp_string *, size_t, | |
| 907 cpp_string *, enum cpp_ttype); | |
| 908 | |
| 909 /* Convert a host character constant to the execution character set. */ | |
| 910 extern cppchar_t cpp_host_to_exec_charset (cpp_reader *, cppchar_t); | |
| 911 | |
| 912 /* Used to register macros and assertions, perhaps from the command line. | |
| 913 The text is the same as the command line argument. */ | |
| 914 extern void cpp_define (cpp_reader *, const char *); | |
| 915 extern void cpp_define_formatted (cpp_reader *pfile, | |
| 916 const char *fmt, ...) ATTRIBUTE_PRINTF_2; | |
| 917 extern void cpp_assert (cpp_reader *, const char *); | |
| 918 extern void cpp_undef (cpp_reader *, const char *); | |
| 919 extern void cpp_unassert (cpp_reader *, const char *); | |
| 920 | |
| 921 /* Undefine all macros and assertions. */ | |
| 922 extern void cpp_undef_all (cpp_reader *); | |
| 923 | |
| 924 extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *, | |
| 925 size_t, int); | |
| 926 extern int cpp_defined (cpp_reader *, const unsigned char *, int); | |
| 927 | |
| 928 /* A preprocessing number. Code assumes that any unused high bits of | |
| 929 the double integer are set to zero. */ | |
| 111 | 930 |
| 931 /* This type has to be equal to unsigned HOST_WIDE_INT, see | |
| 932 gcc/c-family/c-lex.c. */ | |
| 933 typedef uint64_t cpp_num_part; | |
| 0 | 934 typedef struct cpp_num cpp_num; |
| 935 struct cpp_num | |
| 936 { | |
| 937 cpp_num_part high; | |
| 938 cpp_num_part low; | |
| 939 bool unsignedp; /* True if value should be treated as unsigned. */ | |
| 940 bool overflow; /* True if the most recent calculation overflowed. */ | |
| 941 }; | |
| 942 | |
| 943 /* cpplib provides two interfaces for interpretation of preprocessing | |
| 944 numbers. | |
| 945 | |
| 946 cpp_classify_number categorizes numeric constants according to | |
| 947 their field (integer, floating point, or invalid), radix (decimal, | |
| 948 octal, hexadecimal), and type suffixes. */ | |
| 949 | |
| 950 #define CPP_N_CATEGORY 0x000F | |
| 951 #define CPP_N_INVALID 0x0000 | |
| 952 #define CPP_N_INTEGER 0x0001 | |
| 953 #define CPP_N_FLOATING 0x0002 | |
| 954 | |
| 955 #define CPP_N_WIDTH 0x00F0 | |
| 111 | 956 #define CPP_N_SMALL 0x0010 /* int, float, short _Fract/Accum */ |
| 0 | 957 #define CPP_N_MEDIUM 0x0020 /* long, double, long _Fract/_Accum. */ |
| 958 #define CPP_N_LARGE 0x0040 /* long long, long double, | |
| 959 long long _Fract/Accum. */ | |
| 960 | |
| 961 #define CPP_N_WIDTH_MD 0xF0000 /* machine defined. */ | |
| 962 #define CPP_N_MD_W 0x10000 | |
| 963 #define CPP_N_MD_Q 0x20000 | |
| 964 | |
| 965 #define CPP_N_RADIX 0x0F00 | |
| 966 #define CPP_N_DECIMAL 0x0100 | |
| 967 #define CPP_N_HEX 0x0200 | |
| 968 #define CPP_N_OCTAL 0x0400 | |
| 969 #define CPP_N_BINARY 0x0800 | |
| 970 | |
| 971 #define CPP_N_UNSIGNED 0x1000 /* Properties. */ | |
| 972 #define CPP_N_IMAGINARY 0x2000 | |
| 973 #define CPP_N_DFLOAT 0x4000 | |
|
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974 #define CPP_N_DEFAULT 0x8000 |
| 0 | 975 |
| 976 #define CPP_N_FRACT 0x100000 /* Fract types. */ | |
| 977 #define CPP_N_ACCUM 0x200000 /* Accum types. */ | |
| 111 | 978 #define CPP_N_FLOATN 0x400000 /* _FloatN types. */ |
| 979 #define CPP_N_FLOATNX 0x800000 /* _FloatNx types. */ | |
| 980 | |
| 981 #define CPP_N_USERDEF 0x1000000 /* C++0x user-defined literal. */ | |
| 982 | |
| 983 #define CPP_N_WIDTH_FLOATN_NX 0xF0000000 /* _FloatN / _FloatNx value | |
| 984 of N, divided by 16. */ | |
| 985 #define CPP_FLOATN_SHIFT 24 | |
| 986 #define CPP_FLOATN_MAX 0xF0 | |
| 0 | 987 |
| 988 /* Classify a CPP_NUMBER token. The return value is a combination of | |
| 989 the flags from the above sets. */ | |
| 111 | 990 extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *, |
| 991 const char **, source_location); | |
| 992 | |
| 993 /* Return the classification flags for a float suffix. */ | |
| 994 extern unsigned int cpp_interpret_float_suffix (cpp_reader *, const char *, | |
| 995 size_t); | |
| 996 | |
| 997 /* Return the classification flags for an int suffix. */ | |
| 998 extern unsigned int cpp_interpret_int_suffix (cpp_reader *, const char *, | |
| 999 size_t); | |
| 0 | 1000 |
| 1001 /* Evaluate a token classified as category CPP_N_INTEGER. */ | |
| 1002 extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *, | |
| 111 | 1003 unsigned int); |
| 0 | 1004 |
| 1005 /* Sign extend a number, with PRECISION significant bits and all | |
| 1006 others assumed clear, to fill out a cpp_num structure. */ | |
| 1007 cpp_num cpp_num_sign_extend (cpp_num, size_t); | |
| 1008 | |
| 1009 /* Diagnostic levels. To get a diagnostic without associating a | |
| 1010 position in the translation unit with it, use cpp_error_with_line | |
| 1011 with a line number of zero. */ | |
| 1012 | |
|
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1013 enum { |
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1014 /* Warning, an error with -Werror. */ |
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1015 CPP_DL_WARNING = 0, |
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1016 /* Same as CPP_DL_WARNING, except it is not suppressed in system headers. */ |
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1017 CPP_DL_WARNING_SYSHDR, |
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1018 /* Warning, an error with -pedantic-errors or -Werror. */ |
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1019 CPP_DL_PEDWARN, |
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1020 /* An error. */ |
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1021 CPP_DL_ERROR, |
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1022 /* An internal consistency check failed. Prints "internal error: ", |
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1023 otherwise the same as CPP_DL_ERROR. */ |
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1024 CPP_DL_ICE, |
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1025 /* An informative note following a warning. */ |
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1026 CPP_DL_NOTE, |
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1027 /* A fatal error. */ |
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1028 CPP_DL_FATAL |
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1029 }; |
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1030 |
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1031 /* Warning reason codes. Use a reason code of zero for unclassified warnings |
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1032 and errors that are not warnings. */ |
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1033 enum { |
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1034 CPP_W_NONE = 0, |
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1035 CPP_W_DEPRECATED, |
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1036 CPP_W_COMMENTS, |
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1037 CPP_W_MISSING_INCLUDE_DIRS, |
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1038 CPP_W_TRIGRAPHS, |
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1039 CPP_W_MULTICHAR, |
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1040 CPP_W_TRADITIONAL, |
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1041 CPP_W_LONG_LONG, |
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1042 CPP_W_ENDIF_LABELS, |
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1043 CPP_W_NUM_SIGN_CHANGE, |
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1044 CPP_W_VARIADIC_MACROS, |
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1045 CPP_W_BUILTIN_MACRO_REDEFINED, |
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1046 CPP_W_DOLLARS, |
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1047 CPP_W_UNDEF, |
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1048 CPP_W_UNUSED_MACROS, |
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1049 CPP_W_CXX_OPERATOR_NAMES, |
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1050 CPP_W_NORMALIZE, |
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1051 CPP_W_INVALID_PCH, |
| 111 | 1052 CPP_W_WARNING_DIRECTIVE, |
| 1053 CPP_W_LITERAL_SUFFIX, | |
| 1054 CPP_W_DATE_TIME, | |
| 1055 CPP_W_PEDANTIC, | |
| 1056 CPP_W_C90_C99_COMPAT, | |
| 1057 CPP_W_CXX11_COMPAT, | |
| 1058 CPP_W_EXPANSION_TO_DEFINED | |
|
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1059 }; |
| 0 | 1060 |
| 1061 /* Output a diagnostic of some kind. */ | |
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1062 extern bool cpp_error (cpp_reader *, int, const char *msgid, ...) |
| 0 | 1063 ATTRIBUTE_PRINTF_3; |
|
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1064 extern bool cpp_warning (cpp_reader *, int, const char *msgid, ...) |
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1065 ATTRIBUTE_PRINTF_3; |
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1066 extern bool cpp_pedwarning (cpp_reader *, int, const char *msgid, ...) |
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1067 ATTRIBUTE_PRINTF_3; |
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1068 extern bool cpp_warning_syshdr (cpp_reader *, int, const char *msgid, ...) |
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1069 ATTRIBUTE_PRINTF_3; |
| 0 | 1070 |
| 1071 /* Output a diagnostic with "MSGID: " preceding the | |
| 1072 error string of errno. No location is printed. */ | |
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1073 extern bool cpp_errno (cpp_reader *, int, const char *msgid); |
| 111 | 1074 /* Similarly, but with "FILENAME: " instead of "MSGID: ", where |
| 1075 the filename is not localized. */ | |
| 1076 extern bool cpp_errno_filename (cpp_reader *, int, const char *filename, | |
| 1077 source_location loc); | |
| 0 | 1078 |
| 1079 /* Same as cpp_error, except additionally specifies a position as a | |
| 1080 (translation unit) physical line and physical column. If the line is | |
| 1081 zero, then no location is printed. */ | |
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1082 extern bool cpp_error_with_line (cpp_reader *, int, source_location, |
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1083 unsigned, const char *msgid, ...) |
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1084 ATTRIBUTE_PRINTF_5; |
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1085 extern bool cpp_warning_with_line (cpp_reader *, int, source_location, |
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1086 unsigned, const char *msgid, ...) |
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1087 ATTRIBUTE_PRINTF_5; |
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1088 extern bool cpp_pedwarning_with_line (cpp_reader *, int, source_location, |
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1089 unsigned, const char *msgid, ...) |
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1090 ATTRIBUTE_PRINTF_5; |
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1091 extern bool cpp_warning_with_line_syshdr (cpp_reader *, int, source_location, |
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1092 unsigned, const char *msgid, ...) |
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1093 ATTRIBUTE_PRINTF_5; |
| 0 | 1094 |
| 111 | 1095 extern bool cpp_error_at (cpp_reader * pfile, int level, |
| 1096 source_location src_loc, const char *msgid, ...) | |
| 1097 ATTRIBUTE_PRINTF_4; | |
| 1098 | |
| 1099 extern bool cpp_error_at_richloc (cpp_reader * pfile, int level, | |
| 1100 rich_location *richloc, const char *msgid, | |
| 1101 ...) | |
| 1102 ATTRIBUTE_PRINTF_4; | |
| 1103 | |
| 0 | 1104 /* In lex.c */ |
| 1105 extern int cpp_ideq (const cpp_token *, const char *); | |
| 1106 extern void cpp_output_line (cpp_reader *, FILE *); | |
| 1107 extern unsigned char *cpp_output_line_to_string (cpp_reader *, | |
| 1108 const unsigned char *); | |
| 1109 extern void cpp_output_token (const cpp_token *, FILE *); | |
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1110 extern const char *cpp_type2name (enum cpp_ttype, unsigned char flags); |
| 0 | 1111 /* Returns the value of an escape sequence, truncated to the correct |
| 1112 target precision. PSTR points to the input pointer, which is just | |
| 1113 after the backslash. LIMIT is how much text we have. WIDE is true | |
| 1114 if the escape sequence is part of a wide character constant or | |
| 1115 string literal. Handles all relevant diagnostics. */ | |
| 1116 extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr, | |
| 1117 const unsigned char *limit, int wide); | |
| 1118 | |
| 1119 /* Structure used to hold a comment block at a given location in the | |
| 1120 source code. */ | |
| 1121 | |
| 1122 typedef struct | |
| 1123 { | |
| 1124 /* Text of the comment including the terminators. */ | |
| 1125 char *comment; | |
| 1126 | |
| 1127 /* source location for the given comment. */ | |
| 1128 source_location sloc; | |
| 1129 } cpp_comment; | |
| 1130 | |
| 1131 /* Structure holding all comments for a given cpp_reader. */ | |
| 1132 | |
| 1133 typedef struct | |
| 1134 { | |
| 1135 /* table of comment entries. */ | |
| 1136 cpp_comment *entries; | |
| 1137 | |
| 1138 /* number of actual entries entered in the table. */ | |
| 1139 int count; | |
| 1140 | |
| 1141 /* number of entries allocated currently. */ | |
| 1142 int allocated; | |
| 1143 } cpp_comment_table; | |
| 1144 | |
| 1145 /* Returns the table of comments encountered by the preprocessor. This | |
| 1146 table is only populated when pfile->state.save_comments is true. */ | |
| 1147 extern cpp_comment_table *cpp_get_comments (cpp_reader *); | |
| 1148 | |
| 1149 /* In hash.c */ | |
| 1150 | |
| 1151 /* Lookup an identifier in the hashtable. Puts the identifier in the | |
| 1152 table if it is not already there. */ | |
| 1153 extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *, | |
| 1154 unsigned int); | |
| 1155 | |
| 1156 typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *); | |
| 1157 extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *); | |
| 1158 | |
| 1159 /* In macro.c */ | |
| 1160 extern void cpp_scan_nooutput (cpp_reader *); | |
| 1161 extern int cpp_sys_macro_p (cpp_reader *); | |
| 1162 extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *, | |
| 1163 unsigned int); | |
| 1164 | |
| 1165 /* In files.c */ | |
| 1166 extern bool cpp_included (cpp_reader *, const char *); | |
| 1167 extern bool cpp_included_before (cpp_reader *, const char *, source_location); | |
| 1168 extern void cpp_make_system_header (cpp_reader *, int, int); | |
| 1169 extern bool cpp_push_include (cpp_reader *, const char *); | |
| 111 | 1170 extern bool cpp_push_default_include (cpp_reader *, const char *); |
| 0 | 1171 extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *); |
| 1172 extern const char *cpp_get_path (struct _cpp_file *); | |
| 1173 extern cpp_dir *cpp_get_dir (struct _cpp_file *); | |
| 1174 extern cpp_buffer *cpp_get_buffer (cpp_reader *); | |
| 1175 extern struct _cpp_file *cpp_get_file (cpp_buffer *); | |
| 1176 extern cpp_buffer *cpp_get_prev (cpp_buffer *); | |
| 1177 extern void cpp_clear_file_cache (cpp_reader *); | |
| 1178 | |
| 1179 /* In pch.c */ | |
| 1180 struct save_macro_data; | |
| 1181 extern int cpp_save_state (cpp_reader *, FILE *); | |
| 1182 extern int cpp_write_pch_deps (cpp_reader *, FILE *); | |
| 1183 extern int cpp_write_pch_state (cpp_reader *, FILE *); | |
| 1184 extern int cpp_valid_state (cpp_reader *, const char *, int); | |
| 1185 extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **); | |
| 1186 extern int cpp_read_state (cpp_reader *, const char *, FILE *, | |
| 1187 struct save_macro_data *); | |
| 1188 | |
| 111 | 1189 /* In lex.c */ |
| 1190 extern void cpp_force_token_locations (cpp_reader *, source_location *); | |
| 1191 extern void cpp_stop_forcing_token_locations (cpp_reader *); | |
| 1192 | |
| 1193 /* In expr.c */ | |
| 1194 extern enum cpp_ttype cpp_userdef_string_remove_type | |
| 1195 (enum cpp_ttype type); | |
| 1196 extern enum cpp_ttype cpp_userdef_string_add_type | |
| 1197 (enum cpp_ttype type); | |
| 1198 extern enum cpp_ttype cpp_userdef_char_remove_type | |
| 1199 (enum cpp_ttype type); | |
| 1200 extern enum cpp_ttype cpp_userdef_char_add_type | |
| 1201 (enum cpp_ttype type); | |
| 1202 extern bool cpp_userdef_string_p | |
| 1203 (enum cpp_ttype type); | |
| 1204 extern bool cpp_userdef_char_p | |
| 1205 (enum cpp_ttype type); | |
| 1206 extern const char * cpp_get_userdef_suffix | |
| 1207 (const cpp_token *); | |
| 1208 | |
| 0 | 1209 #endif /* ! LIBCPP_CPPLIB_H */ |