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7f2935c7 | 1 | /* Definitions for CPP library. |
6c25a4f7 | 2 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, |
1cb42611 | 3 | 2004, 2005, 2007, 2008, 2009, 2010 |
2398fb2a | 4 | Free Software Foundation, Inc. |
7f2935c7 PB |
5 | Written by Per Bothner, 1994-95. |
6 | ||
7 | This program is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published by the | |
748086b7 | 9 | Free Software Foundation; either version 3, or (at your option) any |
7f2935c7 PB |
10 | later version. |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
748086b7 JJ |
18 | along with this program; see the file COPYING3. If not see |
19 | <http://www.gnu.org/licenses/>. | |
7f2935c7 PB |
20 | |
21 | In other words, you are welcome to use, share and improve this program. | |
22 | You are forbidden to forbid anyone else to use, share and improve | |
23 | what you give them. Help stamp out software-hoarding! */ | |
4f4e53dd PB |
24 | #ifndef LIBCPP_CPPLIB_H |
25 | #define LIBCPP_CPPLIB_H | |
7f2935c7 PB |
26 | |
27 | #include <sys/types.h> | |
4f4e53dd | 28 | #include "symtab.h" |
d82fc108 | 29 | #include "line-map.h" |
7f2935c7 | 30 | |
7f2935c7 PB |
31 | typedef struct cpp_reader cpp_reader; |
32 | typedef struct cpp_buffer cpp_buffer; | |
33 | typedef struct cpp_options cpp_options; | |
1368ee70 | 34 | typedef struct cpp_token cpp_token; |
bfb9dc7f | 35 | typedef struct cpp_string cpp_string; |
a50882dc | 36 | typedef struct cpp_hashnode cpp_hashnode; |
93c80368 | 37 | typedef struct cpp_macro cpp_macro; |
7e96d768 | 38 | typedef struct cpp_callbacks cpp_callbacks; |
8f9b4009 | 39 | typedef struct cpp_dir cpp_dir; |
93c80368 | 40 | |
93c80368 | 41 | struct answer; |
94d1613b | 42 | struct _cpp_file; |
c5a04734 | 43 | |
f8b954fc NB |
44 | /* The first three groups, apart from '=', can appear in preprocessor |
45 | expressions (+= and -= are used to indicate unary + and - resp.). | |
46 | This allows a lookup table to be implemented in _cpp_parse_expr. | |
c5a04734 ZW |
47 | |
48 | The first group, to CPP_LAST_EQ, can be immediately followed by an | |
49 | '='. The lexer needs operators ending in '=', like ">>=", to be in | |
b52dbbf8 SE |
50 | the same order as their counterparts without the '=', like ">>". |
51 | ||
52 | See the cpp_operator table optab in expr.c if you change the order or | |
53 | add or remove anything in the first group. */ | |
c5a04734 | 54 | |
21b11495 ZW |
55 | #define TTYPE_TABLE \ |
56 | OP(EQ, "=") \ | |
57 | OP(NOT, "!") \ | |
58 | OP(GREATER, ">") /* compare */ \ | |
59 | OP(LESS, "<") \ | |
60 | OP(PLUS, "+") /* math */ \ | |
61 | OP(MINUS, "-") \ | |
62 | OP(MULT, "*") \ | |
63 | OP(DIV, "/") \ | |
64 | OP(MOD, "%") \ | |
65 | OP(AND, "&") /* bit ops */ \ | |
66 | OP(OR, "|") \ | |
67 | OP(XOR, "^") \ | |
68 | OP(RSHIFT, ">>") \ | |
69 | OP(LSHIFT, "<<") \ | |
21b11495 ZW |
70 | \ |
71 | OP(COMPL, "~") \ | |
72 | OP(AND_AND, "&&") /* logical */ \ | |
73 | OP(OR_OR, "||") \ | |
74 | OP(QUERY, "?") \ | |
75 | OP(COLON, ":") \ | |
76 | OP(COMMA, ",") /* grouping */ \ | |
77 | OP(OPEN_PAREN, "(") \ | |
78 | OP(CLOSE_PAREN, ")") \ | |
79 | TK(EOF, NONE) \ | |
80 | OP(EQ_EQ, "==") /* compare */ \ | |
81 | OP(NOT_EQ, "!=") \ | |
82 | OP(GREATER_EQ, ">=") \ | |
83 | OP(LESS_EQ, "<=") \ | |
84 | \ | |
85 | /* These two are unary + / - in preprocessor expressions. */ \ | |
86 | OP(PLUS_EQ, "+=") /* math */ \ | |
87 | OP(MINUS_EQ, "-=") \ | |
88 | \ | |
89 | OP(MULT_EQ, "*=") \ | |
90 | OP(DIV_EQ, "/=") \ | |
91 | OP(MOD_EQ, "%=") \ | |
92 | OP(AND_EQ, "&=") /* bit ops */ \ | |
93 | OP(OR_EQ, "|=") \ | |
94 | OP(XOR_EQ, "^=") \ | |
95 | OP(RSHIFT_EQ, ">>=") \ | |
96 | OP(LSHIFT_EQ, "<<=") \ | |
21b11495 ZW |
97 | /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \ |
98 | OP(HASH, "#") /* digraphs */ \ | |
99 | OP(PASTE, "##") \ | |
100 | OP(OPEN_SQUARE, "[") \ | |
101 | OP(CLOSE_SQUARE, "]") \ | |
102 | OP(OPEN_BRACE, "{") \ | |
103 | OP(CLOSE_BRACE, "}") \ | |
104 | /* The remainder of the punctuation. Order is not significant. */ \ | |
105 | OP(SEMICOLON, ";") /* structure */ \ | |
106 | OP(ELLIPSIS, "...") \ | |
107 | OP(PLUS_PLUS, "++") /* increment */ \ | |
108 | OP(MINUS_MINUS, "--") \ | |
109 | OP(DEREF, "->") /* accessors */ \ | |
110 | OP(DOT, ".") \ | |
111 | OP(SCOPE, "::") \ | |
112 | OP(DEREF_STAR, "->*") \ | |
113 | OP(DOT_STAR, ".*") \ | |
114 | OP(ATSIGN, "@") /* used in Objective-C */ \ | |
115 | \ | |
116 | TK(NAME, IDENT) /* word */ \ | |
117 | TK(AT_NAME, IDENT) /* @word - Objective-C */ \ | |
118 | TK(NUMBER, LITERAL) /* 34_be+ta */ \ | |
119 | \ | |
120 | TK(CHAR, LITERAL) /* 'char' */ \ | |
121 | TK(WCHAR, LITERAL) /* L'char' */ \ | |
b6baa67d KVH |
122 | TK(CHAR16, LITERAL) /* u'char' */ \ |
123 | TK(CHAR32, LITERAL) /* U'char' */ \ | |
21b11495 ZW |
124 | TK(OTHER, LITERAL) /* stray punctuation */ \ |
125 | \ | |
126 | TK(STRING, LITERAL) /* "string" */ \ | |
127 | TK(WSTRING, LITERAL) /* L"string" */ \ | |
b6baa67d KVH |
128 | TK(STRING16, LITERAL) /* u"string" */ \ |
129 | TK(STRING32, LITERAL) /* U"string" */ \ | |
2c6e3f55 | 130 | TK(UTF8STRING, LITERAL) /* u8"string" */ \ |
21b11495 ZW |
131 | TK(OBJC_STRING, LITERAL) /* @"string" - Objective-C */ \ |
132 | TK(HEADER_NAME, LITERAL) /* <stdio.h> in #include */ \ | |
133 | \ | |
134 | TK(COMMENT, LITERAL) /* Only if output comments. */ \ | |
135 | /* SPELL_LITERAL happens to DTRT. */ \ | |
136 | TK(MACRO_ARG, NONE) /* Macro argument. */ \ | |
bc4071dd RH |
137 | TK(PRAGMA, NONE) /* Only for deferred pragmas. */ \ |
138 | TK(PRAGMA_EOL, NONE) /* End-of-line for deferred pragmas. */ \ | |
21b11495 ZW |
139 | TK(PADDING, NONE) /* Whitespace for -E. */ |
140 | ||
141 | #define OP(e, s) CPP_ ## e, | |
142 | #define TK(e, s) CPP_ ## e, | |
3a2b2c7a | 143 | enum cpp_ttype |
c45da1ca | 144 | { |
1368ee70 | 145 | TTYPE_TABLE |
21b11495 ZW |
146 | N_TTYPES, |
147 | ||
148 | /* Positions in the table. */ | |
b52dbbf8 | 149 | CPP_LAST_EQ = CPP_LSHIFT, |
21b11495 | 150 | CPP_FIRST_DIGRAPH = CPP_HASH, |
b52dbbf8 | 151 | CPP_LAST_PUNCTUATOR= CPP_ATSIGN, |
21b11495 | 152 | CPP_LAST_CPP_OP = CPP_LESS_EQ |
1368ee70 | 153 | }; |
96be6998 ZW |
154 | #undef OP |
155 | #undef TK | |
1368ee70 | 156 | |
ecfd72e7 | 157 | /* C language kind, used when calling cpp_create_reader. */ |
2778d766 JM |
158 | enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_GNUC1X, |
159 | CLK_STDC89, CLK_STDC94, CLK_STDC99, CLK_STDC1X, | |
dfafdaa6 | 160 | CLK_GNUCXX, CLK_CXX98, CLK_GNUCXX0X, CLK_CXX0X, CLK_ASM}; |
dd07b884 | 161 | |
5d8ebbd8 | 162 | /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */ |
d1b38208 | 163 | struct GTY(()) cpp_string { |
1368ee70 | 164 | unsigned int len; |
f617b8e2 | 165 | const unsigned char *text; |
1368ee70 ZW |
166 | }; |
167 | ||
c5a04734 | 168 | /* Flags for the cpp_token structure. */ |
041c3194 | 169 | #define PREV_WHITE (1 << 0) /* If whitespace before this token. */ |
93c80368 NB |
170 | #define DIGRAPH (1 << 1) /* If it was a digraph. */ |
171 | #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */ | |
172 | #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */ | |
dd07b884 | 173 | #define NAMED_OP (1 << 4) /* C++ named operators. */ |
93c80368 | 174 | #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */ |
4ed5bcfb | 175 | #define BOL (1 << 6) /* Token at beginning of line. */ |
ab84748a VR |
176 | #define PURE_ZERO (1 << 7) /* Single 0 digit, used by the C++ frontend, |
177 | set in c-lex.c. */ | |
aa508502 JM |
178 | #define SP_DIGRAPH (1 << 8) /* # or ## token was a digraph. */ |
179 | #define SP_PREV_WHITE (1 << 9) /* If whitespace before a ## | |
180 | operator, or before this token | |
181 | after a # operator. */ | |
9e62c811 | 182 | |
d8044160 GK |
183 | /* Specify which field, if any, of the cpp_token union is used. */ |
184 | ||
185 | enum cpp_token_fld_kind { | |
186 | CPP_TOKEN_FLD_NODE, | |
187 | CPP_TOKEN_FLD_SOURCE, | |
188 | CPP_TOKEN_FLD_STR, | |
189 | CPP_TOKEN_FLD_ARG_NO, | |
9a0c6187 | 190 | CPP_TOKEN_FLD_TOKEN_NO, |
bc4071dd | 191 | CPP_TOKEN_FLD_PRAGMA, |
d8044160 GK |
192 | CPP_TOKEN_FLD_NONE |
193 | }; | |
194 | ||
9a0c6187 JM |
195 | /* A macro argument in the cpp_token union. */ |
196 | struct GTY(()) cpp_macro_arg { | |
197 | /* Argument number. */ | |
198 | unsigned int arg_no; | |
199 | }; | |
200 | ||
201 | /* An identifier in the cpp_token union. */ | |
202 | struct GTY(()) cpp_identifier { | |
203 | /* The canonical (UTF-8) spelling of the identifier. */ | |
204 | cpp_hashnode * | |
205 | GTY ((nested_ptr (union tree_node, | |
206 | "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL", | |
207 | "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL"))) | |
208 | node; | |
209 | }; | |
210 | ||
1920de47 | 211 | /* A preprocessing token. This has been carefully packed and should |
644eddaa | 212 | occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */ |
d1b38208 | 213 | struct GTY(()) cpp_token { |
12f9df4e | 214 | source_location src_loc; /* Location of first char of token. */ |
041c3194 | 215 | ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */ |
aa508502 | 216 | unsigned short flags; /* flags - see above */ |
041c3194 | 217 | |
d8044160 | 218 | union cpp_token_u |
1368ee70 | 219 | { |
d8044160 | 220 | /* An identifier. */ |
9a0c6187 | 221 | struct cpp_identifier GTY ((tag ("CPP_TOKEN_FLD_NODE"))) node; |
d8044160 GK |
222 | |
223 | /* Inherit padding from this token. */ | |
224 | cpp_token * GTY ((tag ("CPP_TOKEN_FLD_SOURCE"))) source; | |
225 | ||
226 | /* A string, or number. */ | |
227 | struct cpp_string GTY ((tag ("CPP_TOKEN_FLD_STR"))) str; | |
228 | ||
229 | /* Argument no. for a CPP_MACRO_ARG. */ | |
9a0c6187 JM |
230 | struct cpp_macro_arg GTY ((tag ("CPP_TOKEN_FLD_ARG_NO"))) macro_arg; |
231 | ||
232 | /* Original token no. for a CPP_PASTE (from a sequence of | |
233 | consecutive paste tokens in a macro expansion). */ | |
234 | unsigned int GTY ((tag ("CPP_TOKEN_FLD_TOKEN_NO"))) token_no; | |
bc4071dd RH |
235 | |
236 | /* Caller-supplied identifier for a CPP_PRAGMA. */ | |
237 | unsigned int GTY ((tag ("CPP_TOKEN_FLD_PRAGMA"))) pragma; | |
d8044160 | 238 | } GTY ((desc ("cpp_token_val_index (&%1)"))) val; |
7f2935c7 PB |
239 | }; |
240 | ||
d8044160 GK |
241 | /* Say which field is in use. */ |
242 | extern enum cpp_token_fld_kind cpp_token_val_index (cpp_token *tok); | |
243 | ||
4268e8bb | 244 | /* A type wide enough to hold any multibyte source character. |
625458d0 | 245 | cpplib's character constant interpreter requires an unsigned type. |
43839642 ZW |
246 | Also, a typedef for the signed equivalent. |
247 | The width of this type is capped at 32 bits; there do exist targets | |
248 | where wchar_t is 64 bits, but only in a non-default mode, and there | |
249 | would be no meaningful interpretation for a wchar_t value greater | |
250 | than 2^32 anyway -- the widest wide-character encoding around is | |
251 | ISO 10646, which stops at 2^31. */ | |
252 | #if CHAR_BIT * SIZEOF_INT >= 32 | |
625458d0 | 253 | # define CPPCHAR_SIGNED_T int |
43839642 ZW |
254 | #elif CHAR_BIT * SIZEOF_LONG >= 32 |
255 | # define CPPCHAR_SIGNED_T long | |
625458d0 | 256 | #else |
43839642 | 257 | # error "Cannot find a least-32-bit signed integer type" |
625458d0 NB |
258 | #endif |
259 | typedef unsigned CPPCHAR_SIGNED_T cppchar_t; | |
260 | typedef CPPCHAR_SIGNED_T cppchar_signed_t; | |
0d9f234d | 261 | |
72bb2c39 BI |
262 | /* Style of header dependencies to generate. */ |
263 | enum cpp_deps_style { DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM }; | |
264 | ||
50668cf6 GK |
265 | /* The possible normalization levels, from most restrictive to least. */ |
266 | enum cpp_normalize_level { | |
267 | /* In NFKC. */ | |
268 | normalized_KC = 0, | |
269 | /* In NFC. */ | |
270 | normalized_C, | |
271 | /* In NFC, except for subsequences where being in NFC would make | |
272 | the identifier invalid. */ | |
273 | normalized_identifier_C, | |
274 | /* Not normalized at all. */ | |
275 | normalized_none | |
276 | }; | |
277 | ||
ae79697b ZW |
278 | /* This structure is nested inside struct cpp_reader, and |
279 | carries all the options visible to the command line. */ | |
280 | struct cpp_options | |
c50bca08 | 281 | { |
6ab3e7dd NB |
282 | /* Characters between tab stops. */ |
283 | unsigned int tabstop; | |
284 | ||
bdb05a7b NB |
285 | /* The language we're preprocessing. */ |
286 | enum c_lang lang; | |
287 | ||
7f2935c7 | 288 | /* Nonzero means use extra default include directories for C++. */ |
ae79697b | 289 | unsigned char cplusplus; |
7f2935c7 | 290 | |
6614fd40 | 291 | /* Nonzero means handle cplusplus style comments. */ |
ae79697b | 292 | unsigned char cplusplus_comments; |
7f2935c7 | 293 | |
899015a0 TT |
294 | /* Nonzero means define __OBJC__, treat @ as a special token, use |
295 | the OBJC[PLUS]_INCLUDE_PATH environment variable, and allow | |
296 | "#import". */ | |
ae79697b | 297 | unsigned char objc; |
7f2935c7 | 298 | |
564ad5f4 | 299 | /* Nonzero means don't copy comments into the output file. */ |
ae79697b | 300 | unsigned char discard_comments; |
7f2935c7 | 301 | |
477cdac7 JT |
302 | /* Nonzero means don't copy comments into the output file during |
303 | macro expansion. */ | |
304 | unsigned char discard_comments_in_macro_exp; | |
305 | ||
041c3194 | 306 | /* Nonzero means process the ISO trigraph sequences. */ |
ae79697b | 307 | unsigned char trigraphs; |
7f2935c7 | 308 | |
9b55f29a NB |
309 | /* Nonzero means process the ISO digraph sequences. */ |
310 | unsigned char digraphs; | |
311 | ||
bdb05a7b NB |
312 | /* Nonzero means to allow hexadecimal floats and LL suffixes. */ |
313 | unsigned char extended_numbers; | |
314 | ||
b6baa67d KVH |
315 | /* Nonzero means process u/U prefix literals (UTF-16/32). */ |
316 | unsigned char uliterals; | |
317 | ||
7f2935c7 | 318 | /* Nonzero means print names of header files (-H). */ |
ae79697b | 319 | unsigned char print_include_names; |
7f2935c7 | 320 | |
9fbd3e41 JM |
321 | /* Nonzero means complain about deprecated features. */ |
322 | unsigned char warn_deprecated; | |
323 | ||
7f2935c7 | 324 | /* Nonzero means warn if slash-star appears in a comment. */ |
ae79697b | 325 | unsigned char warn_comments; |
7f2935c7 | 326 | |
b02398bd BE |
327 | /* Nonzero means warn if a user-supplied include directory does not |
328 | exist. */ | |
329 | unsigned char warn_missing_include_dirs; | |
330 | ||
7f2935c7 | 331 | /* Nonzero means warn if there are any trigraphs. */ |
ae79697b | 332 | unsigned char warn_trigraphs; |
7f2935c7 | 333 | |
a5a49440 NB |
334 | /* Nonzero means warn about multicharacter charconsts. */ |
335 | unsigned char warn_multichar; | |
336 | ||
f9a0e96c ZW |
337 | /* Nonzero means warn about various incompatibilities with |
338 | traditional C. */ | |
07aa0b04 | 339 | unsigned char warn_traditional; |
7f2935c7 | 340 | |
cd7ab83f NB |
341 | /* Nonzero means warn about long long numeric constants. */ |
342 | unsigned char warn_long_long; | |
343 | ||
909de5da PE |
344 | /* Nonzero means warn about text after an #endif (or #else). */ |
345 | unsigned char warn_endif_labels; | |
346 | ||
68e65275 NB |
347 | /* Nonzero means warn about implicit sign changes owing to integer |
348 | promotions. */ | |
349 | unsigned char warn_num_sign_change; | |
350 | ||
e5b79219 RH |
351 | /* Zero means don't warn about __VA_ARGS__ usage in c89 pedantic mode. |
352 | Presumably the usage is protected by the appropriate #ifdef. */ | |
353 | unsigned char warn_variadic_macros; | |
354 | ||
c047ce93 SB |
355 | /* Nonzero means warn about builtin macros that are redefined or |
356 | explicitly undefined. */ | |
357 | unsigned char warn_builtin_macro_redefined; | |
358 | ||
31031edd JL |
359 | /* Nonzero means we should look for header.gcc files that remap file |
360 | names. */ | |
ae79697b | 361 | unsigned char remap; |
31031edd | 362 | |
eebedaa5 | 363 | /* Zero means dollar signs are punctuation. */ |
ae79697b | 364 | unsigned char dollars_in_ident; |
7f2935c7 | 365 | |
af15a2fe JM |
366 | /* Nonzero means UCNs are accepted in identifiers. */ |
367 | unsigned char extended_identifiers; | |
368 | ||
78b8811a HPN |
369 | /* True if we should warn about dollars in identifiers or numbers |
370 | for this translation unit. */ | |
371 | unsigned char warn_dollars; | |
372 | ||
6ac34fdc | 373 | /* Nonzero means warn if undefined identifiers are evaluated in an #if. */ |
ae79697b | 374 | unsigned char warn_undef; |
6ac34fdc | 375 | |
a69cbaac NB |
376 | /* Nonzero means warn of unused macros from the main file. */ |
377 | unsigned char warn_unused_macros; | |
378 | ||
31948547 | 379 | /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */ |
ae79697b | 380 | unsigned char c99; |
31948547 | 381 | |
58551c23 NB |
382 | /* Nonzero if we are conforming to a specific C or C++ standard. */ |
383 | unsigned char std; | |
384 | ||
7f2935c7 | 385 | /* Nonzero means give all the error messages the ANSI standard requires. */ |
ae79697b | 386 | unsigned char pedantic; |
7f2935c7 | 387 | |
3773a46b JM |
388 | /* Nonzero means we're looking at already preprocessed code, so don't |
389 | bother trying to do macro expansion and whatnot. */ | |
ae79697b | 390 | unsigned char preprocessed; |
3773a46b | 391 | |
644eddaa | 392 | /* Nonzero means handle C++ alternate operator names. */ |
be768055 | 393 | unsigned char operator_names; |
7e96d768 | 394 | |
3d8b2a98 ILT |
395 | /* Nonzero means warn about use of C++ alternate operator names. */ |
396 | unsigned char warn_cxx_operator_names; | |
397 | ||
004cb263 NB |
398 | /* True for traditional preprocessing. */ |
399 | unsigned char traditional; | |
400 | ||
e6cc3a24 ZW |
401 | /* Holds the name of the target (execution) character set. */ |
402 | const char *narrow_charset; | |
403 | ||
404 | /* Holds the name of the target wide character set. */ | |
405 | const char *wide_charset; | |
406 | ||
cf551fba EC |
407 | /* Holds the name of the input character set. */ |
408 | const char *input_charset; | |
409 | ||
50668cf6 GK |
410 | /* The minimum permitted level of normalization before a warning |
411 | is generated. */ | |
412 | enum cpp_normalize_level warn_normalize; | |
413 | ||
783e2989 NB |
414 | /* True to warn about precompiled header files we couldn't use. */ |
415 | bool warn_invalid_pch; | |
416 | ||
417 | /* True if dependencies should be restored from a precompiled header. */ | |
418 | bool restore_pch_deps; | |
419 | ||
f4ff5a69 NB |
420 | /* Dependency generation. */ |
421 | struct | |
422 | { | |
423 | /* Style of header dependencies to generate. */ | |
72bb2c39 | 424 | enum cpp_deps_style style; |
f4ff5a69 NB |
425 | |
426 | /* Assume missing files are generated files. */ | |
427 | bool missing_files; | |
428 | ||
429 | /* Generate phony targets for each dependency apart from the first | |
430 | one. */ | |
431 | bool phony_targets; | |
182d89a3 NB |
432 | |
433 | /* If true, no dependency is generated on the main file. */ | |
434 | bool ignore_main_file; | |
74dc6a11 CD |
435 | |
436 | /* If true, intend to use the preprocessor output (e.g., for compilation) | |
437 | in addition to the dependency info. */ | |
438 | bool need_preprocessor_output; | |
f4ff5a69 NB |
439 | } deps; |
440 | ||
44a147ad NB |
441 | /* Target-specific features set by the front end or client. */ |
442 | ||
443 | /* Precision for target CPP arithmetic, target characters, target | |
444 | ints and target wide characters, respectively. */ | |
445 | size_t precision, char_precision, int_precision, wchar_precision; | |
446 | ||
23ff0223 NB |
447 | /* True means chars (wide chars) are unsigned. */ |
448 | bool unsigned_char, unsigned_wchar; | |
5279d739 | 449 | |
e6cc3a24 ZW |
450 | /* True if the most significant byte in a word has the lowest |
451 | address in memory. */ | |
452 | bool bytes_big_endian; | |
783e2989 | 453 | |
5279d739 ZW |
454 | /* Nonzero means __STDC__ should have the value 0 in system headers. */ |
455 | unsigned char stdc_0_in_system_headers; | |
21b11495 | 456 | |
ccfc4c91 OW |
457 | /* True disables tokenization outside of preprocessing directives. */ |
458 | bool directives_only; | |
ae79697b | 459 | }; |
7f2935c7 | 460 | |
94d1613b MS |
461 | /* Callback for header lookup for HEADER, which is the name of a |
462 | source file. It is used as a method of last resort to find headers | |
463 | that are not otherwise found during the normal include processing. | |
464 | The return value is the malloced name of a header to try and open, | |
465 | if any, or NULL otherwise. This callback is called only if the | |
466 | header is otherwise unfound. */ | |
e3c287c9 | 467 | typedef const char *(*missing_header_cb)(cpp_reader *, const char *header, cpp_dir **); |
94d1613b | 468 | |
48c4721e | 469 | /* Call backs to cpplib client. */ |
7e96d768 NB |
470 | struct cpp_callbacks |
471 | { | |
97293897 | 472 | /* Called when a new line of preprocessed output is started. */ |
6cf87ca4 | 473 | void (*line_change) (cpp_reader *, const cpp_token *, int); |
4dc299fb PB |
474 | |
475 | /* Called when switching to/from a new file. | |
476 | The line_map is for the new file. It is NULL if there is no new file. | |
477 | (In C this happens when done with <built-in>+<command line> and also | |
478 | when done with a main file.) This can be used for resource cleanup. */ | |
6cf87ca4 | 479 | void (*file_change) (cpp_reader *, const struct line_map *); |
4dc299fb | 480 | |
b20d9f0c | 481 | void (*dir_change) (cpp_reader *, const char *); |
6cf87ca4 | 482 | void (*include) (cpp_reader *, unsigned int, const unsigned char *, |
cbc43ae0 | 483 | const char *, int, const cpp_token **); |
6cf87ca4 ZW |
484 | void (*define) (cpp_reader *, unsigned int, cpp_hashnode *); |
485 | void (*undef) (cpp_reader *, unsigned int, cpp_hashnode *); | |
486 | void (*ident) (cpp_reader *, unsigned int, const cpp_string *); | |
487 | void (*def_pragma) (cpp_reader *, unsigned int); | |
488 | int (*valid_pch) (cpp_reader *, const char *, int); | |
489 | void (*read_pch) (cpp_reader *, const char *, int, const char *); | |
94d1613b | 490 | missing_header_cb missing_header; |
178b58b5 | 491 | |
5950c3c9 BE |
492 | /* Context-sensitive macro support. Returns macro (if any) that should |
493 | be expanded. */ | |
494 | cpp_hashnode * (*macro_to_expand) (cpp_reader *, const cpp_token *); | |
495 | ||
148e4216 JM |
496 | /* Called to emit a diagnostic. This callback receives the |
497 | translated message. */ | |
87cf0651 | 498 | bool (*error) (cpp_reader *, int, int, source_location, unsigned int, |
148e4216 | 499 | const char *, va_list *) |
87cf0651 | 500 | ATTRIBUTE_FPTR_PRINTF(6,0); |
93d45d9e JM |
501 | |
502 | /* Callbacks for when a macro is expanded, or tested (whether | |
503 | defined or not at the time) in #ifdef, #ifndef or "defined". */ | |
504 | void (*used_define) (cpp_reader *, unsigned int, cpp_hashnode *); | |
505 | void (*used_undef) (cpp_reader *, unsigned int, cpp_hashnode *); | |
506 | /* Called before #define and #undef or other macro definition | |
507 | changes are processed. */ | |
508 | void (*before_define) (cpp_reader *); | |
3de8a540 AC |
509 | /* Called whenever a macro is expanded or tested. |
510 | Second argument is the location of the start of the current expansion. */ | |
511 | void (*used) (cpp_reader *, source_location, cpp_hashnode *); | |
7e96d768 NB |
512 | }; |
513 | ||
0c539b47 DR |
514 | #ifdef VMS |
515 | #define INO_T_CPP ino_t ino[3] | |
516 | #else | |
517 | #define INO_T_CPP ino_t ino | |
518 | #endif | |
519 | ||
5793b276 | 520 | /* Chain of directories to look for include files in. */ |
8f9b4009 | 521 | struct cpp_dir |
5793b276 NB |
522 | { |
523 | /* NULL-terminated singly-linked list. */ | |
8f9b4009 | 524 | struct cpp_dir *next; |
5793b276 | 525 | |
8f9b4009 | 526 | /* NAME of the directory, NUL-terminated. */ |
5793b276 NB |
527 | char *name; |
528 | unsigned int len; | |
529 | ||
530 | /* One if a system header, two if a system header that has extern | |
531 | "C" guards for C++. */ | |
532 | unsigned char sysp; | |
533 | ||
8f5929e1 JJ |
534 | /* Is this a user-supplied directory? */ |
535 | bool user_supplied_p; | |
536 | ||
537 | /* The canonicalized NAME as determined by lrealpath. This field | |
538 | is only used by hosts that lack reliable inode numbers. */ | |
539 | char *canonical_name; | |
540 | ||
8f9b4009 NB |
541 | /* Mapping of file names for this directory for MS-DOS and related |
542 | platforms. A NULL-terminated array of (from, to) pairs. */ | |
543 | const char **name_map; | |
cf551fba | 544 | |
94d1613b MS |
545 | /* Routine to construct pathname, given the search path name and the |
546 | HEADER we are trying to find, return a constructed pathname to | |
547 | try and open. If this is NULL, the constructed pathname is as | |
548 | constructed by append_file_to_dir. */ | |
549 | char *(*construct) (const char *header, cpp_dir *dir); | |
550 | ||
5793b276 NB |
551 | /* The C front end uses these to recognize duplicated |
552 | directories in the search path. */ | |
0c539b47 | 553 | INO_T_CPP; |
5793b276 NB |
554 | dev_t dev; |
555 | }; | |
556 | ||
93c80368 NB |
557 | /* The structure of a node in the hash table. The hash table has |
558 | entries for all identifiers: either macros defined by #define | |
559 | commands (type NT_MACRO), assertions created with #assert | |
560 | (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros | |
95bd1dd7 | 561 | like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are |
93c80368 NB |
562 | flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an |
563 | identifier that behaves like an operator such as "xor". | |
564 | NODE_DIAGNOSTIC is for speed in lex_token: it indicates a | |
565 | diagnostic may be required for this node. Currently this only | |
3d8b2a98 ILT |
566 | applies to __VA_ARGS__, poisoned identifiers, and -Wc++-compat |
567 | warnings about NODE_OPERATOR. */ | |
93c80368 NB |
568 | |
569 | /* Hash node flags. */ | |
570 | #define NODE_OPERATOR (1 << 0) /* C++ named operator. */ | |
571 | #define NODE_POISONED (1 << 1) /* Poisoned identifier. */ | |
572 | #define NODE_BUILTIN (1 << 2) /* Builtin macro. */ | |
573 | #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */ | |
618cdda7 | 574 | #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */ |
644eddaa | 575 | #define NODE_DISABLED (1 << 5) /* A disabled macro. */ |
71c0e7fc | 576 | #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */ |
93d45d9e | 577 | #define NODE_USED (1 << 7) /* Dumped with -dU. */ |
5950c3c9 | 578 | #define NODE_CONDITIONAL (1 << 8) /* Conditional macro */ |
3d8b2a98 | 579 | #define NODE_WARN_OPERATOR (1 << 9) /* Warn about C++ named operator. */ |
93c80368 NB |
580 | |
581 | /* Different flavors of hash node. */ | |
f8f769ea ZW |
582 | enum node_type |
583 | { | |
93c80368 NB |
584 | NT_VOID = 0, /* No definition yet. */ |
585 | NT_MACRO, /* A macro of some form. */ | |
586 | NT_ASSERTION /* Predicate for #assert. */ | |
587 | }; | |
588 | ||
644eddaa NB |
589 | /* Different flavors of builtin macro. _Pragma is an operator, but we |
590 | handle it with the builtin code for efficiency reasons. */ | |
7e5487a2 | 591 | enum cpp_builtin_type |
93c80368 NB |
592 | { |
593 | BT_SPECLINE = 0, /* `__LINE__' */ | |
594 | BT_DATE, /* `__DATE__' */ | |
595 | BT_FILE, /* `__FILE__' */ | |
596 | BT_BASE_FILE, /* `__BASE_FILE__' */ | |
597 | BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ | |
598 | BT_TIME, /* `__TIME__' */ | |
644eddaa | 599 | BT_STDC, /* `__STDC__' */ |
be8ac3e2 | 600 | BT_PRAGMA, /* `_Pragma' operator */ |
a702045a OW |
601 | BT_TIMESTAMP, /* `__TIMESTAMP__' */ |
602 | BT_COUNTER /* `__COUNTER__' */ | |
f8f769ea ZW |
603 | }; |
604 | ||
2a967f3d NB |
605 | #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE)) |
606 | #define HT_NODE(NODE) ((ht_identifier *) (NODE)) | |
607 | #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident) | |
608 | #define NODE_NAME(NODE) HT_STR (&(NODE)->ident) | |
f8f769ea | 609 | |
d8044160 GK |
610 | /* Specify which field, if any, of the union is used. */ |
611 | ||
612 | enum { | |
613 | NTV_MACRO, | |
614 | NTV_ANSWER, | |
615 | NTV_BUILTIN, | |
616 | NTV_ARGUMENT, | |
617 | NTV_NONE | |
618 | }; | |
619 | ||
620 | #define CPP_HASHNODE_VALUE_IDX(HNODE) \ | |
621 | ((HNODE.flags & NODE_MACRO_ARG) ? NTV_ARGUMENT \ | |
622 | : HNODE.type == NT_MACRO ? ((HNODE.flags & NODE_BUILTIN) \ | |
623 | ? NTV_BUILTIN : NTV_MACRO) \ | |
624 | : HNODE.type == NT_ASSERTION ? NTV_ANSWER \ | |
625 | : NTV_NONE) | |
626 | ||
2a967f3d NB |
627 | /* The common part of an identifier node shared amongst all 3 C front |
628 | ends. Also used to store CPP identifiers, which are a superset of | |
629 | identifiers in the grammatical sense. */ | |
c3f829c1 | 630 | |
d1b38208 | 631 | union GTY(()) _cpp_hashnode_value { |
c3f829c1 GDR |
632 | /* If a macro. */ |
633 | cpp_macro * GTY((tag ("NTV_MACRO"))) macro; | |
634 | /* Answers to an assertion. */ | |
635 | struct answer * GTY ((tag ("NTV_ANSWER"))) answers; | |
636 | /* Code for a builtin macro. */ | |
7e5487a2 | 637 | enum cpp_builtin_type GTY ((tag ("NTV_BUILTIN"))) builtin; |
c3f829c1 GDR |
638 | /* Macro argument index. */ |
639 | unsigned short GTY ((tag ("NTV_ARGUMENT"))) arg_index; | |
640 | }; | |
641 | ||
d1b38208 | 642 | struct GTY(()) cpp_hashnode { |
2a967f3d | 643 | struct ht_identifier ident; |
4977bab6 | 644 | unsigned int is_directive : 1; |
cf551fba | 645 | unsigned int directive_index : 7; /* If is_directive, |
4977bab6 | 646 | then index into directive table. |
71c0e7fc | 647 | Otherwise, a NODE_OPERATOR. */ |
2a967f3d | 648 | unsigned char rid_code; /* Rid code - for front ends. */ |
3d8b2a98 ILT |
649 | ENUM_BITFIELD(node_type) type : 6; /* CPP node type. */ |
650 | unsigned int flags : 10; /* CPP flags. */ | |
f8f769ea | 651 | |
c3f829c1 | 652 | union _cpp_hashnode_value GTY ((desc ("CPP_HASHNODE_VALUE_IDX (%1)"))) value; |
f8f769ea ZW |
653 | }; |
654 | ||
b4e46cea PB |
655 | /* Call this first to get a handle to pass to other functions. |
656 | ||
657 | If you want cpplib to manage its own hashtable, pass in a NULL | |
658 | pointer. Otherwise you should pass in an initialized hash table | |
659 | that cpplib will share; this technique is used by the C front | |
660 | ends. */ | |
50f59cd7 PB |
661 | extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *, |
662 | struct line_maps *); | |
400023a3 | 663 | |
5ffeb913 TT |
664 | /* Reset the cpp_reader's line_map. This is only used after reading a |
665 | PCH file. */ | |
666 | extern void cpp_set_line_map (cpp_reader *, struct line_maps *); | |
667 | ||
f749a36b NB |
668 | /* Call this to change the selected language standard (e.g. because of |
669 | command line options). */ | |
6cf87ca4 | 670 | extern void cpp_set_lang (cpp_reader *, enum c_lang); |
f749a36b | 671 | |
5793b276 | 672 | /* Set the include paths. */ |
8f9b4009 | 673 | extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int); |
5793b276 | 674 | |
c6e83800 ZW |
675 | /* Call these to get pointers to the options, callback, and deps |
676 | structures for a given reader. These pointers are good until you | |
677 | call cpp_finish on that reader. You can either edit the callbacks | |
7e96d768 NB |
678 | through the pointer returned from cpp_get_callbacks, or set them |
679 | with cpp_set_callbacks. */ | |
6cf87ca4 | 680 | extern cpp_options *cpp_get_options (cpp_reader *); |
6cf87ca4 ZW |
681 | extern cpp_callbacks *cpp_get_callbacks (cpp_reader *); |
682 | extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *); | |
c6e83800 | 683 | extern struct deps *cpp_get_deps (cpp_reader *); |
7e96d768 | 684 | |
8e9ea4d7 PB |
685 | /* This function reads the file, but does not start preprocessing. It |
686 | returns the name of the original file; this is the same as the | |
687 | input file, except for preprocessed input. This will generate at | |
688 | least one file change callback, and possibly a line change callback | |
9ac97460 | 689 | too. If there was an error opening the file, it returns NULL. */ |
8e9ea4d7 | 690 | extern const char *cpp_read_main_file (cpp_reader *, const char *); |
f5e99456 | 691 | |
ccfc4c91 OW |
692 | /* Set up built-ins with special behavior. Use cpp_init_builtins() |
693 | instead unless your know what you are doing. */ | |
694 | extern void cpp_init_special_builtins (cpp_reader *); | |
695 | ||
c1bad961 | 696 | /* Set up built-ins like __FILE__. */ |
6cf87ca4 | 697 | extern void cpp_init_builtins (cpp_reader *, int); |
f5e99456 | 698 | |
4169c321 | 699 | /* This is called after options have been parsed, and partially |
59e4e217 | 700 | processed. */ |
4169c321 PB |
701 | extern void cpp_post_options (cpp_reader *); |
702 | ||
e6cc3a24 ZW |
703 | /* Set up translation to the target character set. */ |
704 | extern void cpp_init_iconv (cpp_reader *); | |
705 | ||
f4ff5a69 NB |
706 | /* Call this to finish preprocessing. If you requested dependency |
707 | generation, pass an open stream to write the information to, | |
148e4216 JM |
708 | otherwise NULL. It is your responsibility to close the stream. */ |
709 | extern void cpp_finish (cpp_reader *, FILE *deps_stream); | |
f4ff5a69 | 710 | |
f5e99456 | 711 | /* Call this to release the handle at the end of preprocessing. Any |
148e4216 | 712 | use of the handle after this function returns is invalid. */ |
6cf87ca4 | 713 | extern void cpp_destroy (cpp_reader *); |
f5e99456 | 714 | |
6cf87ca4 ZW |
715 | extern unsigned int cpp_token_len (const cpp_token *); |
716 | extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *); | |
717 | extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *, | |
47e20491 | 718 | unsigned char *, bool); |
6cf87ca4 | 719 | extern void cpp_register_pragma (cpp_reader *, const char *, const char *, |
b5b3e36a | 720 | void (*) (cpp_reader *), bool); |
bc4071dd RH |
721 | extern void cpp_register_deferred_pragma (cpp_reader *, const char *, |
722 | const char *, unsigned, bool, bool); | |
6cf87ca4 ZW |
723 | extern int cpp_avoid_paste (cpp_reader *, const cpp_token *, |
724 | const cpp_token *); | |
725 | extern const cpp_token *cpp_get_token (cpp_reader *); | |
5ffeb913 TT |
726 | extern const cpp_token *cpp_get_token_with_location (cpp_reader *, |
727 | source_location *); | |
6cf87ca4 ZW |
728 | extern const unsigned char *cpp_macro_definition (cpp_reader *, |
729 | const cpp_hashnode *); | |
730 | extern void _cpp_backup_tokens (cpp_reader *, unsigned int); | |
5950c3c9 | 731 | extern const cpp_token *cpp_peek_token (cpp_reader *, int); |
041c3194 | 732 | |
2c6e3f55 | 733 | /* Evaluate a CPP_*CHAR* token. */ |
6cf87ca4 ZW |
734 | extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *, |
735 | unsigned int *, int *); | |
2c6e3f55 | 736 | /* Evaluate a vector of CPP_*STRING* tokens. */ |
e6cc3a24 ZW |
737 | extern bool cpp_interpret_string (cpp_reader *, |
738 | const cpp_string *, size_t, | |
b6baa67d | 739 | cpp_string *, enum cpp_ttype); |
423e95e2 EC |
740 | extern bool cpp_interpret_string_notranslate (cpp_reader *, |
741 | const cpp_string *, size_t, | |
b6baa67d | 742 | cpp_string *, enum cpp_ttype); |
c8a96070 | 743 | |
c5ff069d ZW |
744 | /* Convert a host character constant to the execution character set. */ |
745 | extern cppchar_t cpp_host_to_exec_charset (cpp_reader *, cppchar_t); | |
746 | ||
c1bad961 | 747 | /* Used to register macros and assertions, perhaps from the command line. |
3d90d290 | 748 | The text is the same as the command line argument. */ |
6cf87ca4 | 749 | extern void cpp_define (cpp_reader *, const char *); |
28f68625 DF |
750 | extern void cpp_define_formatted (cpp_reader *pfile, |
751 | const char *fmt, ...) ATTRIBUTE_PRINTF_2; | |
6cf87ca4 ZW |
752 | extern void cpp_assert (cpp_reader *, const char *); |
753 | extern void cpp_undef (cpp_reader *, const char *); | |
754 | extern void cpp_unassert (cpp_reader *, const char *); | |
7f2935c7 | 755 | |
121de39f RH |
756 | extern cpp_macro *cpp_push_definition (cpp_reader *, const char *); |
757 | extern void cpp_pop_definition (cpp_reader *, const char *, cpp_macro *); | |
758 | ||
d1bd0ded GK |
759 | /* Undefine all macros and assertions. */ |
760 | extern void cpp_undef_all (cpp_reader *); | |
761 | ||
6cf87ca4 | 762 | extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *, |
4dc299fb | 763 | size_t, int); |
6cf87ca4 | 764 | extern int cpp_defined (cpp_reader *, const unsigned char *, int); |
c5a04734 | 765 | |
cd7ab83f NB |
766 | /* A preprocessing number. Code assumes that any unused high bits of |
767 | the double integer are set to zero. */ | |
768 | typedef unsigned HOST_WIDE_INT cpp_num_part; | |
769 | typedef struct cpp_num cpp_num; | |
770 | struct cpp_num | |
771 | { | |
772 | cpp_num_part high; | |
773 | cpp_num_part low; | |
774 | bool unsignedp; /* True if value should be treated as unsigned. */ | |
775 | bool overflow; /* True if the most recent calculation overflowed. */ | |
776 | }; | |
777 | ||
778 | /* cpplib provides two interfaces for interpretation of preprocessing | |
779 | numbers. | |
780 | ||
781 | cpp_classify_number categorizes numeric constants according to | |
782 | their field (integer, floating point, or invalid), radix (decimal, | |
783 | octal, hexadecimal), and type suffixes. */ | |
784 | ||
785 | #define CPP_N_CATEGORY 0x000F | |
786 | #define CPP_N_INVALID 0x0000 | |
787 | #define CPP_N_INTEGER 0x0001 | |
788 | #define CPP_N_FLOATING 0x0002 | |
789 | ||
790 | #define CPP_N_WIDTH 0x00F0 | |
ac6b1c67 CF |
791 | #define CPP_N_SMALL 0x0010 /* int, float, shrot _Fract/Accum */ |
792 | #define CPP_N_MEDIUM 0x0020 /* long, double, long _Fract/_Accum. */ | |
793 | #define CPP_N_LARGE 0x0040 /* long long, long double, | |
794 | long long _Fract/Accum. */ | |
cd7ab83f | 795 | |
c77cd3d1 UB |
796 | #define CPP_N_WIDTH_MD 0xF0000 /* machine defined. */ |
797 | #define CPP_N_MD_W 0x10000 | |
798 | #define CPP_N_MD_Q 0x20000 | |
799 | ||
cd7ab83f NB |
800 | #define CPP_N_RADIX 0x0F00 |
801 | #define CPP_N_DECIMAL 0x0100 | |
802 | #define CPP_N_HEX 0x0200 | |
803 | #define CPP_N_OCTAL 0x0400 | |
f7fd775f | 804 | #define CPP_N_BINARY 0x0800 |
cd7ab83f NB |
805 | |
806 | #define CPP_N_UNSIGNED 0x1000 /* Properties. */ | |
807 | #define CPP_N_IMAGINARY 0x2000 | |
ad6ed77e | 808 | #define CPP_N_DFLOAT 0x4000 |
839a3b8a | 809 | #define CPP_N_DEFAULT 0x8000 |
cd7ab83f | 810 | |
ac6b1c67 CF |
811 | #define CPP_N_FRACT 0x100000 /* Fract types. */ |
812 | #define CPP_N_ACCUM 0x200000 /* Accum types. */ | |
813 | ||
cd7ab83f NB |
814 | /* Classify a CPP_NUMBER token. The return value is a combination of |
815 | the flags from the above sets. */ | |
6cf87ca4 | 816 | extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *); |
cd7ab83f NB |
817 | |
818 | /* Evaluate a token classified as category CPP_N_INTEGER. */ | |
6cf87ca4 ZW |
819 | extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *, |
820 | unsigned int type); | |
cd7ab83f | 821 | |
ceeedfc1 NB |
822 | /* Sign extend a number, with PRECISION significant bits and all |
823 | others assumed clear, to fill out a cpp_num structure. */ | |
6cf87ca4 | 824 | cpp_num cpp_num_sign_extend (cpp_num, size_t); |
ceeedfc1 | 825 | |
95bd1dd7 | 826 | /* Diagnostic levels. To get a diagnostic without associating a |
ebef4e8c NB |
827 | position in the translation unit with it, use cpp_error_with_line |
828 | with a line number of zero. */ | |
829 | ||
87cf0651 SB |
830 | enum { |
831 | /* Warning, an error with -Werror. */ | |
832 | CPP_DL_WARNING = 0, | |
833 | /* Same as CPP_DL_WARNING, except it is not suppressed in system headers. */ | |
834 | CPP_DL_WARNING_SYSHDR, | |
835 | /* Warning, an error with -pedantic-errors or -Werror. */ | |
836 | CPP_DL_PEDWARN, | |
837 | /* An error. */ | |
838 | CPP_DL_ERROR, | |
839 | /* An internal consistency check failed. Prints "internal error: ", | |
840 | otherwise the same as CPP_DL_ERROR. */ | |
841 | CPP_DL_ICE, | |
842 | /* An informative note following a warning. */ | |
843 | CPP_DL_NOTE, | |
844 | /* A fatal error. */ | |
845 | CPP_DL_FATAL | |
846 | }; | |
847 | ||
848 | /* Warning reason codes. Use a reason code of zero for unclassified warnings | |
849 | and errors that are not warnings. */ | |
850 | enum { | |
851 | CPP_W_NONE = 0, | |
852 | CPP_W_DEPRECATED, | |
853 | CPP_W_COMMENTS, | |
854 | CPP_W_MISSING_INCLUDE_DIRS, | |
855 | CPP_W_TRIGRAPHS, | |
856 | CPP_W_MULTICHAR, | |
857 | CPP_W_TRADITIONAL, | |
858 | CPP_W_LONG_LONG, | |
859 | CPP_W_ENDIF_LABELS, | |
860 | CPP_W_NUM_SIGN_CHANGE, | |
861 | CPP_W_VARIADIC_MACROS, | |
862 | CPP_W_BUILTIN_MACRO_REDEFINED, | |
863 | CPP_W_DOLLARS, | |
864 | CPP_W_UNDEF, | |
865 | CPP_W_UNUSED_MACROS, | |
866 | CPP_W_CXX_OPERATOR_NAMES, | |
867 | CPP_W_NORMALIZE, | |
868 | CPP_W_INVALID_PCH, | |
869 | CPP_W_WARNING_DIRECTIVE | |
870 | }; | |
ebef4e8c | 871 | |
ebef4e8c | 872 | /* Output a diagnostic of some kind. */ |
148e4216 | 873 | extern bool cpp_error (cpp_reader *, int, const char *msgid, ...) |
ebef4e8c | 874 | ATTRIBUTE_PRINTF_3; |
87cf0651 SB |
875 | extern bool cpp_warning (cpp_reader *, int, const char *msgid, ...) |
876 | ATTRIBUTE_PRINTF_3; | |
877 | extern bool cpp_pedwarning (cpp_reader *, int, const char *msgid, ...) | |
878 | ATTRIBUTE_PRINTF_3; | |
879 | extern bool cpp_warning_syshdr (cpp_reader *, int, const char *msgid, ...) | |
880 | ATTRIBUTE_PRINTF_3; | |
ebef4e8c | 881 | |
6cf87ca4 | 882 | /* Output a diagnostic with "MSGID: " preceding the |
ebef4e8c | 883 | error string of errno. No location is printed. */ |
148e4216 | 884 | extern bool cpp_errno (cpp_reader *, int, const char *msgid); |
ebef4e8c NB |
885 | |
886 | /* Same as cpp_error, except additionally specifies a position as a | |
887 | (translation unit) physical line and physical column. If the line is | |
888 | zero, then no location is printed. */ | |
87cf0651 SB |
889 | extern bool cpp_error_with_line (cpp_reader *, int, source_location, |
890 | unsigned, const char *msgid, ...) | |
891 | ATTRIBUTE_PRINTF_5; | |
892 | extern bool cpp_warning_with_line (cpp_reader *, int, source_location, | |
893 | unsigned, const char *msgid, ...) | |
894 | ATTRIBUTE_PRINTF_5; | |
895 | extern bool cpp_pedwarning_with_line (cpp_reader *, int, source_location, | |
896 | unsigned, const char *msgid, ...) | |
897 | ATTRIBUTE_PRINTF_5; | |
898 | extern bool cpp_warning_with_line_syshdr (cpp_reader *, int, source_location, | |
899 | unsigned, const char *msgid, ...) | |
900 | ATTRIBUTE_PRINTF_5; | |
f2d5f0cc | 901 | |
28f68625 | 902 | /* In lex.c */ |
6cf87ca4 ZW |
903 | extern int cpp_ideq (const cpp_token *, const char *); |
904 | extern void cpp_output_line (cpp_reader *, FILE *); | |
5d6342eb TT |
905 | extern unsigned char *cpp_output_line_to_string (cpp_reader *, |
906 | const unsigned char *); | |
6cf87ca4 | 907 | extern void cpp_output_token (const cpp_token *, FILE *); |
cfc93532 | 908 | extern const char *cpp_type2name (enum cpp_ttype, unsigned char flags); |
4268e8bb NB |
909 | /* Returns the value of an escape sequence, truncated to the correct |
910 | target precision. PSTR points to the input pointer, which is just | |
911 | after the backslash. LIMIT is how much text we have. WIDE is true | |
912 | if the escape sequence is part of a wide character constant or | |
913 | string literal. Handles all relevant diagnostics. */ | |
6cf87ca4 ZW |
914 | extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr, |
915 | const unsigned char *limit, int wide); | |
1368ee70 | 916 | |
631d0d36 MG |
917 | /* Structure used to hold a comment block at a given location in the |
918 | source code. */ | |
919 | ||
920 | typedef struct | |
921 | { | |
922 | /* Text of the comment including the terminators. */ | |
923 | char *comment; | |
924 | ||
925 | /* source location for the given comment. */ | |
926 | source_location sloc; | |
927 | } cpp_comment; | |
928 | ||
929 | /* Structure holding all comments for a given cpp_reader. */ | |
930 | ||
931 | typedef struct | |
932 | { | |
933 | /* table of comment entries. */ | |
934 | cpp_comment *entries; | |
935 | ||
936 | /* number of actual entries entered in the table. */ | |
937 | int count; | |
938 | ||
939 | /* number of entries allocated currently. */ | |
940 | int allocated; | |
941 | } cpp_comment_table; | |
942 | ||
943 | /* Returns the table of comments encountered by the preprocessor. This | |
944 | table is only populated when pfile->state.save_comments is true. */ | |
945 | extern cpp_comment_table *cpp_get_comments (cpp_reader *); | |
946 | ||
28f68625 | 947 | /* In hash.c */ |
2a967f3d NB |
948 | |
949 | /* Lookup an identifier in the hashtable. Puts the identifier in the | |
950 | table if it is not already there. */ | |
6cf87ca4 ZW |
951 | extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *, |
952 | unsigned int); | |
2a967f3d | 953 | |
6cf87ca4 ZW |
954 | typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *); |
955 | extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *); | |
926c5678 | 956 | |
28f68625 | 957 | /* In macro.c */ |
6cf87ca4 ZW |
958 | extern void cpp_scan_nooutput (cpp_reader *); |
959 | extern int cpp_sys_macro_p (cpp_reader *); | |
960 | extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *, | |
961 | unsigned int); | |
6de1e2a9 | 962 | |
28f68625 | 963 | /* In files.c */ |
8f9b4009 | 964 | extern bool cpp_included (cpp_reader *, const char *); |
f1e20710 | 965 | extern bool cpp_included_before (cpp_reader *, const char *, source_location); |
6cf87ca4 | 966 | extern void cpp_make_system_header (cpp_reader *, int, int); |
6cf87ca4 ZW |
967 | extern bool cpp_push_include (cpp_reader *, const char *); |
968 | extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *); | |
94d1613b | 969 | extern const char *cpp_get_path (struct _cpp_file *); |
e3c287c9 | 970 | extern cpp_dir *cpp_get_dir (struct _cpp_file *); |
94d1613b MS |
971 | extern cpp_buffer *cpp_get_buffer (cpp_reader *); |
972 | extern struct _cpp_file *cpp_get_file (cpp_buffer *); | |
973 | extern cpp_buffer *cpp_get_prev (cpp_buffer *); | |
97f6bd40 | 974 | extern void cpp_clear_file_cache (cpp_reader *); |
b0699dad | 975 | |
28f68625 | 976 | /* In pch.c */ |
17211ab5 | 977 | struct save_macro_data; |
6cf87ca4 ZW |
978 | extern int cpp_save_state (cpp_reader *, FILE *); |
979 | extern int cpp_write_pch_deps (cpp_reader *, FILE *); | |
980 | extern int cpp_write_pch_state (cpp_reader *, FILE *); | |
981 | extern int cpp_valid_state (cpp_reader *, const char *, int); | |
982 | extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **); | |
983 | extern int cpp_read_state (cpp_reader *, const char *, FILE *, | |
984 | struct save_macro_data *); | |
17211ab5 | 985 | |
4f4e53dd | 986 | #endif /* ! LIBCPP_CPPLIB_H */ |