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7f2935c7 | 1 | /* Definitions for CPP library. |
5d8ebbd8 | 2 | Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
2398fb2a | 3 | Free Software Foundation, Inc. |
7f2935c7 PB |
4 | Written by Per Bothner, 1994-95. |
5 | ||
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms of the GNU General Public License as published by the | |
8 | Free Software Foundation; either version 2, or (at your option) any | |
9 | later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
940d9d63 | 18 | Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
7f2935c7 PB |
19 | |
20 | In other words, you are welcome to use, share and improve this program. | |
21 | You are forbidden to forbid anyone else to use, share and improve | |
22 | what you give them. Help stamp out software-hoarding! */ | |
2a967f3d NB |
23 | #ifndef GCC_CPPLIB_H |
24 | #define GCC_CPPLIB_H | |
7f2935c7 PB |
25 | |
26 | #include <sys/types.h> | |
2a967f3d | 27 | #include "hashtable.h" |
d82fc108 | 28 | #include "line-map.h" |
7f2935c7 PB |
29 | |
30 | #ifdef __cplusplus | |
31 | extern "C" { | |
32 | #endif | |
33 | ||
8b97c5f8 | 34 | /* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */ |
88657302 | 35 | #ifndef GCC_C_PRAGMA_H |
7f2935c7 | 36 | typedef struct cpp_reader cpp_reader; |
8b97c5f8 | 37 | #endif |
7f2935c7 PB |
38 | typedef struct cpp_buffer cpp_buffer; |
39 | typedef struct cpp_options cpp_options; | |
1368ee70 | 40 | typedef struct cpp_token cpp_token; |
bfb9dc7f | 41 | typedef struct cpp_string cpp_string; |
a50882dc | 42 | typedef struct cpp_hashnode cpp_hashnode; |
93c80368 | 43 | typedef struct cpp_macro cpp_macro; |
7e96d768 | 44 | typedef struct cpp_callbacks cpp_callbacks; |
93c80368 | 45 | |
93c80368 | 46 | struct answer; |
93c80368 | 47 | struct file_name_map_list; |
c5a04734 ZW |
48 | |
49 | /* The first two groups, apart from '=', can appear in preprocessor | |
50 | expressions. This allows a lookup table to be implemented in | |
51 | _cpp_parse_expr. | |
52 | ||
53 | The first group, to CPP_LAST_EQ, can be immediately followed by an | |
54 | '='. The lexer needs operators ending in '=', like ">>=", to be in | |
55 | the same order as their counterparts without the '=', like ">>". */ | |
56 | ||
57 | /* Positions in the table. */ | |
6fee6033 | 58 | #define CPP_LAST_EQ CPP_MAX |
c5a04734 | 59 | #define CPP_FIRST_DIGRAPH CPP_HASH |
9ec7291f | 60 | #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR |
1368ee70 | 61 | |
1368ee70 | 62 | #define TTYPE_TABLE \ |
96be6998 ZW |
63 | OP(CPP_EQ = 0, "=") \ |
64 | OP(CPP_NOT, "!") \ | |
65 | OP(CPP_GREATER, ">") /* compare */ \ | |
66 | OP(CPP_LESS, "<") \ | |
67 | OP(CPP_PLUS, "+") /* math */ \ | |
68 | OP(CPP_MINUS, "-") \ | |
69 | OP(CPP_MULT, "*") \ | |
70 | OP(CPP_DIV, "/") \ | |
71 | OP(CPP_MOD, "%") \ | |
72 | OP(CPP_AND, "&") /* bit ops */ \ | |
73 | OP(CPP_OR, "|") \ | |
74 | OP(CPP_XOR, "^") \ | |
75 | OP(CPP_RSHIFT, ">>") \ | |
76 | OP(CPP_LSHIFT, "<<") \ | |
92936ecf ZW |
77 | OP(CPP_MIN, "<?") /* extension */ \ |
78 | OP(CPP_MAX, ">?") \ | |
c5a04734 | 79 | \ |
96be6998 ZW |
80 | OP(CPP_COMPL, "~") \ |
81 | OP(CPP_AND_AND, "&&") /* logical */ \ | |
82 | OP(CPP_OR_OR, "||") \ | |
83 | OP(CPP_QUERY, "?") \ | |
84 | OP(CPP_COLON, ":") \ | |
85 | OP(CPP_COMMA, ",") /* grouping */ \ | |
86 | OP(CPP_OPEN_PAREN, "(") \ | |
87 | OP(CPP_CLOSE_PAREN, ")") \ | |
88 | OP(CPP_EQ_EQ, "==") /* compare */ \ | |
89 | OP(CPP_NOT_EQ, "!=") \ | |
90 | OP(CPP_GREATER_EQ, ">=") \ | |
91 | OP(CPP_LESS_EQ, "<=") \ | |
1368ee70 | 92 | \ |
96be6998 ZW |
93 | OP(CPP_PLUS_EQ, "+=") /* math */ \ |
94 | OP(CPP_MINUS_EQ, "-=") \ | |
95 | OP(CPP_MULT_EQ, "*=") \ | |
96 | OP(CPP_DIV_EQ, "/=") \ | |
97 | OP(CPP_MOD_EQ, "%=") \ | |
98 | OP(CPP_AND_EQ, "&=") /* bit ops */ \ | |
99 | OP(CPP_OR_EQ, "|=") \ | |
100 | OP(CPP_XOR_EQ, "^=") \ | |
101 | OP(CPP_RSHIFT_EQ, ">>=") \ | |
102 | OP(CPP_LSHIFT_EQ, "<<=") \ | |
92936ecf ZW |
103 | OP(CPP_MIN_EQ, "<?=") /* extension */ \ |
104 | OP(CPP_MAX_EQ, ">?=") \ | |
c5a04734 | 105 | /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \ |
96be6998 ZW |
106 | OP(CPP_HASH, "#") /* digraphs */ \ |
107 | OP(CPP_PASTE, "##") \ | |
108 | OP(CPP_OPEN_SQUARE, "[") \ | |
109 | OP(CPP_CLOSE_SQUARE, "]") \ | |
110 | OP(CPP_OPEN_BRACE, "{") \ | |
111 | OP(CPP_CLOSE_BRACE, "}") \ | |
112 | /* The remainder of the punctuation. Order is not significant. */ \ | |
113 | OP(CPP_SEMICOLON, ";") /* structure */ \ | |
114 | OP(CPP_ELLIPSIS, "...") \ | |
96be6998 ZW |
115 | OP(CPP_PLUS_PLUS, "++") /* increment */ \ |
116 | OP(CPP_MINUS_MINUS, "--") \ | |
117 | OP(CPP_DEREF, "->") /* accessors */ \ | |
118 | OP(CPP_DOT, ".") \ | |
119 | OP(CPP_SCOPE, "::") \ | |
120 | OP(CPP_DEREF_STAR, "->*") \ | |
121 | OP(CPP_DOT_STAR, ".*") \ | |
cc937581 | 122 | OP(CPP_ATSIGN, "@") /* used in Objective C */ \ |
1368ee70 | 123 | \ |
96be6998 | 124 | TK(CPP_NAME, SPELL_IDENT) /* word */ \ |
47ad4138 | 125 | TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \ |
1368ee70 | 126 | \ |
96be6998 ZW |
127 | TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \ |
128 | TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \ | |
129 | TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \ | |
130 | \ | |
131 | TK(CPP_STRING, SPELL_STRING) /* "string" */ \ | |
132 | TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \ | |
133 | TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \ | |
134 | \ | |
47ad4138 ZW |
135 | TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \ |
136 | /* SPELL_NUMBER happens to DTRT. */ \ | |
96be6998 | 137 | TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \ |
47ad4138 ZW |
138 | TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */ \ |
139 | TK(CPP_EOF, SPELL_NONE) /* End of line or file. */ | |
1368ee70 | 140 | |
96be6998 ZW |
141 | #define OP(e, s) e, |
142 | #define TK(e, s) e, | |
3a2b2c7a | 143 | enum cpp_ttype |
c45da1ca | 144 | { |
1368ee70 ZW |
145 | TTYPE_TABLE |
146 | N_TTYPES | |
147 | }; | |
96be6998 ZW |
148 | #undef OP |
149 | #undef TK | |
1368ee70 | 150 | |
dd07b884 NB |
151 | /* C language kind, used when calling cpp_reader_init. */ |
152 | enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99, | |
153 | CLK_GNUCXX, CLK_CXX98, CLK_OBJC, CLK_OBJCXX, CLK_ASM}; | |
154 | ||
5d8ebbd8 | 155 | /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */ |
bfb9dc7f | 156 | struct cpp_string |
1368ee70 ZW |
157 | { |
158 | unsigned int len; | |
f617b8e2 | 159 | const unsigned char *text; |
1368ee70 ZW |
160 | }; |
161 | ||
c5a04734 | 162 | /* Flags for the cpp_token structure. */ |
041c3194 | 163 | #define PREV_WHITE (1 << 0) /* If whitespace before this token. */ |
93c80368 NB |
164 | #define DIGRAPH (1 << 1) /* If it was a digraph. */ |
165 | #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */ | |
166 | #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */ | |
dd07b884 | 167 | #define NAMED_OP (1 << 4) /* C++ named operators. */ |
93c80368 | 168 | #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */ |
4ed5bcfb | 169 | #define BOL (1 << 6) /* Token at beginning of line. */ |
9e62c811 | 170 | |
1920de47 | 171 | /* A preprocessing token. This has been carefully packed and should |
644eddaa | 172 | occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */ |
1368ee70 ZW |
173 | struct cpp_token |
174 | { | |
1444f2ed NB |
175 | unsigned int line; /* Logical line of first char of token. */ |
176 | unsigned short col; /* Column of first char of token. */ | |
041c3194 ZW |
177 | ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */ |
178 | unsigned char flags; /* flags - see above */ | |
179 | ||
1368ee70 ZW |
180 | union |
181 | { | |
2a967f3d | 182 | cpp_hashnode *node; /* An identifier. */ |
4ed5bcfb | 183 | const cpp_token *source; /* Inherit padding from this token. */ |
6c53ebff NB |
184 | struct cpp_string str; /* A string, or number. */ |
185 | unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */ | |
186 | unsigned char c; /* Character represented by CPP_OTHER. */ | |
1368ee70 | 187 | } val; |
7f2935c7 PB |
188 | }; |
189 | ||
64cdc383 MH |
190 | /* A standalone character. It is unsigned for the same reason we use |
191 | unsigned char - to avoid signedness issues. */ | |
192 | typedef unsigned int cppchar_t; | |
0d9f234d | 193 | |
ae79697b ZW |
194 | /* Values for opts.dump_macros. |
195 | dump_only means inhibit output of the preprocessed text | |
196 | and instead output the definitions of all user-defined | |
86702e31 | 197 | macros in a form suitable for use as input to cpp. |
ae79697b ZW |
198 | dump_names means pass #define and the macro name through to output. |
199 | dump_definitions means pass the whole definition (plus #define) through | |
200 | */ | |
201 | enum { dump_none = 0, dump_only, dump_names, dump_definitions }; | |
7f2935c7 | 202 | |
ae79697b ZW |
203 | /* This structure is nested inside struct cpp_reader, and |
204 | carries all the options visible to the command line. */ | |
205 | struct cpp_options | |
c50bca08 | 206 | { |
ae79697b ZW |
207 | /* Name of input and output files. */ |
208 | const char *in_fname; | |
209 | const char *out_fname; | |
194d7493 | 210 | |
6ab3e7dd NB |
211 | /* Characters between tab stops. */ |
212 | unsigned int tabstop; | |
213 | ||
eebedaa5 | 214 | /* Pending options - -D, -U, -A, -I, -ixxx. */ |
ae79697b | 215 | struct cpp_pending *pending; |
7f2935c7 | 216 | |
ae79697b ZW |
217 | /* File name which deps are being written to. This is 0 if deps are |
218 | being written to stdout. */ | |
219 | const char *deps_file; | |
0b22d65c | 220 | |
ae79697b | 221 | /* Search paths for include files. */ |
591e15a1 NB |
222 | struct search_path *quote_include; /* "" */ |
223 | struct search_path *bracket_include; /* <> */ | |
7f2935c7 | 224 | |
ae79697b ZW |
225 | /* Map between header names and file names, used only on DOS where |
226 | file names are limited in length. */ | |
7e2eb697 PB |
227 | struct file_name_map_list *map_list; |
228 | ||
ae79697b ZW |
229 | /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION' |
230 | in the standard include file directories. */ | |
231 | const char *include_prefix; | |
232 | unsigned int include_prefix_len; | |
233 | ||
6db83155 ZW |
234 | /* -fleading_underscore sets this to "_". */ |
235 | const char *user_label_prefix; | |
236 | ||
bdb05a7b NB |
237 | /* The language we're preprocessing. */ |
238 | enum c_lang lang; | |
239 | ||
7f2935c7 | 240 | /* Non-0 means -v, so print the full set of include dirs. */ |
ae79697b | 241 | unsigned char verbose; |
7f2935c7 | 242 | |
0fef3fd0 NB |
243 | /* Nonzero means chars are signed. */ |
244 | unsigned char signed_char; | |
245 | ||
7f2935c7 | 246 | /* Nonzero means use extra default include directories for C++. */ |
ae79697b | 247 | unsigned char cplusplus; |
7f2935c7 PB |
248 | |
249 | /* Nonzero means handle cplusplus style comments */ | |
ae79697b | 250 | unsigned char cplusplus_comments; |
7f2935c7 PB |
251 | |
252 | /* Nonzero means handle #import, for objective C. */ | |
ae79697b | 253 | unsigned char objc; |
7f2935c7 | 254 | |
564ad5f4 | 255 | /* Nonzero means don't copy comments into the output file. */ |
ae79697b | 256 | unsigned char discard_comments; |
7f2935c7 | 257 | |
477cdac7 JT |
258 | /* Nonzero means don't copy comments into the output file during |
259 | macro expansion. */ | |
260 | unsigned char discard_comments_in_macro_exp; | |
261 | ||
041c3194 | 262 | /* Nonzero means process the ISO trigraph sequences. */ |
ae79697b | 263 | unsigned char trigraphs; |
7f2935c7 | 264 | |
9b55f29a NB |
265 | /* Nonzero means process the ISO digraph sequences. */ |
266 | unsigned char digraphs; | |
267 | ||
bdb05a7b NB |
268 | /* Nonzero means to allow hexadecimal floats and LL suffixes. */ |
269 | unsigned char extended_numbers; | |
270 | ||
ae79697b ZW |
271 | /* Nonzero means print the names of included files rather than the |
272 | preprocessed output. 1 means just the #include "...", 2 means | |
273 | #include <...> as well. */ | |
274 | unsigned char print_deps; | |
7f2935c7 | 275 | |
a5a4ce3c NB |
276 | /* Nonzero if phony targets are created for each header. */ |
277 | unsigned char deps_phony_targets; | |
278 | ||
ae79697b ZW |
279 | /* Nonzero if missing .h files in -M output are assumed to be |
280 | generated files and not errors. */ | |
281 | unsigned char print_deps_missing_files; | |
7f2935c7 | 282 | |
eebedaa5 | 283 | /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */ |
ae79697b | 284 | unsigned char print_deps_append; |
7f2935c7 PB |
285 | |
286 | /* Nonzero means print names of header files (-H). */ | |
ae79697b | 287 | unsigned char print_include_names; |
7f2935c7 | 288 | |
ae79697b ZW |
289 | /* Nonzero means cpp_pedwarn causes a hard error. */ |
290 | unsigned char pedantic_errors; | |
7f2935c7 | 291 | |
c1212d2f | 292 | /* Nonzero means don't print warning messages. */ |
ae79697b | 293 | unsigned char inhibit_warnings; |
7f2935c7 | 294 | |
317639a8 BC |
295 | /* Nonzero means don't suppress warnings from system headers. */ |
296 | unsigned char warn_system_headers; | |
297 | ||
ae79697b ZW |
298 | /* Nonzero means don't print error messages. Has no option to |
299 | select it, but can be set by a user of cpplib (e.g. fix-header). */ | |
300 | unsigned char inhibit_errors; | |
c1212d2f | 301 | |
7f2935c7 | 302 | /* Nonzero means warn if slash-star appears in a comment. */ |
ae79697b | 303 | unsigned char warn_comments; |
7f2935c7 PB |
304 | |
305 | /* Nonzero means warn if there are any trigraphs. */ | |
ae79697b | 306 | unsigned char warn_trigraphs; |
7f2935c7 PB |
307 | |
308 | /* Nonzero means warn if #import is used. */ | |
ae79697b | 309 | unsigned char warn_import; |
7f2935c7 | 310 | |
f9a0e96c ZW |
311 | /* Nonzero means warn about various incompatibilities with |
312 | traditional C. */ | |
07aa0b04 | 313 | unsigned char warn_traditional; |
7f2935c7 | 314 | |
909de5da PE |
315 | /* Nonzero means warn about text after an #endif (or #else). */ |
316 | unsigned char warn_endif_labels; | |
317 | ||
7f2935c7 | 318 | /* Nonzero means turn warnings into errors. */ |
ae79697b | 319 | unsigned char warnings_are_errors; |
7f2935c7 | 320 | |
ae79697b ZW |
321 | /* Nonzero causes output not to be done, but directives such as |
322 | #define that have side effects are still obeyed. */ | |
323 | unsigned char no_output; | |
7f2935c7 | 324 | |
31031edd JL |
325 | /* Nonzero means we should look for header.gcc files that remap file |
326 | names. */ | |
ae79697b | 327 | unsigned char remap; |
31031edd | 328 | |
7f2935c7 | 329 | /* Nonzero means don't output line number information. */ |
ae79697b | 330 | unsigned char no_line_commands; |
7f2935c7 | 331 | |
ae79697b ZW |
332 | /* Nonzero means -I- has been seen, so don't look for #include "foo" |
333 | the source-file directory. */ | |
334 | unsigned char ignore_srcdir; | |
7f2935c7 | 335 | |
eebedaa5 | 336 | /* Zero means dollar signs are punctuation. */ |
ae79697b | 337 | unsigned char dollars_in_ident; |
7f2935c7 | 338 | |
6ac34fdc | 339 | /* Nonzero means warn if undefined identifiers are evaluated in an #if. */ |
ae79697b | 340 | unsigned char warn_undef; |
6ac34fdc | 341 | |
31948547 | 342 | /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */ |
ae79697b | 343 | unsigned char c99; |
31948547 | 344 | |
7f2935c7 | 345 | /* Nonzero means give all the error messages the ANSI standard requires. */ |
ae79697b | 346 | unsigned char pedantic; |
7f2935c7 | 347 | |
3773a46b JM |
348 | /* Nonzero means we're looking at already preprocessed code, so don't |
349 | bother trying to do macro expansion and whatnot. */ | |
ae79697b | 350 | unsigned char preprocessed; |
3773a46b | 351 | |
ae79697b ZW |
352 | /* Nonzero disables all the standard directories for headers. */ |
353 | unsigned char no_standard_includes; | |
7f2935c7 | 354 | |
ae79697b ZW |
355 | /* Nonzero disables the C++-specific standard directories for headers. */ |
356 | unsigned char no_standard_cplusplus_includes; | |
7f2935c7 | 357 | |
ae79697b ZW |
358 | /* Nonzero means dump macros in some fashion - see above. */ |
359 | unsigned char dump_macros; | |
7f2935c7 | 360 | |
ae79697b ZW |
361 | /* Nonzero means pass #include lines through to the output. */ |
362 | unsigned char dump_includes; | |
7f2935c7 | 363 | |
ae79697b ZW |
364 | /* Print column number in error messages. */ |
365 | unsigned char show_column; | |
be768055 | 366 | |
644eddaa | 367 | /* Nonzero means handle C++ alternate operator names. */ |
be768055 | 368 | unsigned char operator_names; |
7e96d768 NB |
369 | |
370 | /* True if --help, --version or --target-help appeared in the | |
371 | options. Stand-alone CPP should then bail out after option | |
372 | parsing; drivers might want to continue printing help. */ | |
373 | unsigned char help_only; | |
ae79697b | 374 | }; |
7f2935c7 | 375 | |
7e96d768 NB |
376 | /* Call backs. */ |
377 | struct cpp_callbacks | |
378 | { | |
97293897 NB |
379 | /* Called when a new line of preprocessed output is started. */ |
380 | void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int)); | |
381 | void (*file_change) PARAMS ((cpp_reader *, const struct line_map *)); | |
382 | void (*include) PARAMS ((cpp_reader *, unsigned int, | |
383 | const unsigned char *, const cpp_token *)); | |
384 | void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *)); | |
385 | void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *)); | |
386 | void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *)); | |
387 | void (*def_pragma) PARAMS ((cpp_reader *, unsigned int)); | |
7e96d768 NB |
388 | }; |
389 | ||
ae79697b | 390 | #define CPP_FATAL_LIMIT 1000 |
eebedaa5 | 391 | /* True if we have seen a "fatal" error. */ |
7e96d768 | 392 | #define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT) |
ae79697b | 393 | |
7f2935c7 | 394 | /* Name under which this program was invoked. */ |
bcc5cac9 | 395 | extern const char *progname; |
7f2935c7 | 396 | |
93c80368 NB |
397 | /* The structure of a node in the hash table. The hash table has |
398 | entries for all identifiers: either macros defined by #define | |
399 | commands (type NT_MACRO), assertions created with #assert | |
400 | (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros | |
401 | like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are | |
402 | flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an | |
403 | identifier that behaves like an operator such as "xor". | |
404 | NODE_DIAGNOSTIC is for speed in lex_token: it indicates a | |
405 | diagnostic may be required for this node. Currently this only | |
406 | applies to __VA_ARGS__ and poisoned identifiers. */ | |
407 | ||
408 | /* Hash node flags. */ | |
409 | #define NODE_OPERATOR (1 << 0) /* C++ named operator. */ | |
410 | #define NODE_POISONED (1 << 1) /* Poisoned identifier. */ | |
411 | #define NODE_BUILTIN (1 << 2) /* Builtin macro. */ | |
412 | #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */ | |
618cdda7 | 413 | #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */ |
644eddaa | 414 | #define NODE_DISABLED (1 << 5) /* A disabled macro. */ |
93c80368 NB |
415 | |
416 | /* Different flavors of hash node. */ | |
f8f769ea ZW |
417 | enum node_type |
418 | { | |
93c80368 NB |
419 | NT_VOID = 0, /* No definition yet. */ |
420 | NT_MACRO, /* A macro of some form. */ | |
421 | NT_ASSERTION /* Predicate for #assert. */ | |
422 | }; | |
423 | ||
644eddaa NB |
424 | /* Different flavors of builtin macro. _Pragma is an operator, but we |
425 | handle it with the builtin code for efficiency reasons. */ | |
93c80368 NB |
426 | enum builtin_type |
427 | { | |
428 | BT_SPECLINE = 0, /* `__LINE__' */ | |
429 | BT_DATE, /* `__DATE__' */ | |
430 | BT_FILE, /* `__FILE__' */ | |
431 | BT_BASE_FILE, /* `__BASE_FILE__' */ | |
432 | BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */ | |
433 | BT_TIME, /* `__TIME__' */ | |
644eddaa NB |
434 | BT_STDC, /* `__STDC__' */ |
435 | BT_PRAGMA /* `_Pragma' operator */ | |
f8f769ea ZW |
436 | }; |
437 | ||
2a967f3d NB |
438 | #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE)) |
439 | #define HT_NODE(NODE) ((ht_identifier *) (NODE)) | |
440 | #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident) | |
441 | #define NODE_NAME(NODE) HT_STR (&(NODE)->ident) | |
f8f769ea | 442 | |
2a967f3d NB |
443 | /* The common part of an identifier node shared amongst all 3 C front |
444 | ends. Also used to store CPP identifiers, which are a superset of | |
445 | identifiers in the grammatical sense. */ | |
a50882dc | 446 | struct cpp_hashnode |
f8f769ea | 447 | { |
2a967f3d | 448 | struct ht_identifier ident; |
dd07b884 NB |
449 | unsigned short arg_index; /* Macro argument index. */ |
450 | unsigned char directive_index; /* Index into directive table. */ | |
2a967f3d NB |
451 | unsigned char rid_code; /* Rid code - for front ends. */ |
452 | ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */ | |
453 | unsigned char flags; /* CPP flags. */ | |
f8f769ea | 454 | |
041c3194 ZW |
455 | union |
456 | { | |
dd07b884 NB |
457 | cpp_macro *macro; /* If a macro. */ |
458 | struct answer *answers; /* Answers to an assertion. */ | |
459 | enum cpp_ttype operator; /* Code for a named operator. */ | |
460 | enum builtin_type builtin; /* Code for a builtin macro. */ | |
f8f769ea | 461 | } value; |
f8f769ea ZW |
462 | }; |
463 | ||
f5e99456 NB |
464 | /* Call this first to get a handle to pass to other functions. */ |
465 | extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang)); | |
400023a3 | 466 | |
7e96d768 NB |
467 | /* Call these to get pointers to the options and callback structures |
468 | for a given reader. These pointers are good until you call | |
469 | cpp_finish on that reader. You can either edit the callbacks | |
470 | through the pointer returned from cpp_get_callbacks, or set them | |
471 | with cpp_set_callbacks. */ | |
472 | extern cpp_options *cpp_get_options PARAMS ((cpp_reader *)); | |
47d89cf3 | 473 | extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *)); |
7e96d768 NB |
474 | extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *)); |
475 | extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *)); | |
476 | ||
96302433 NB |
477 | /* Now call cpp_handle_option[s] to handle 1[or more] switches. The |
478 | return value is the number of arguments used. If | |
479 | cpp_handle_options returns without using all arguments, it couldn't | |
480 | understand the next switch. When there are no switches left, you | |
f5e99456 | 481 | must call cpp_post_options before calling cpp_read_main_file. Only |
96302433 | 482 | after cpp_post_options are the contents of the cpp_options |
f5e99456 NB |
483 | structure reliable. Options processing is not completed until you |
484 | call cpp_finish_options. */ | |
96302433 | 485 | extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **)); |
ffdeea47 | 486 | extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **, int)); |
96302433 NB |
487 | extern void cpp_post_options PARAMS ((cpp_reader *)); |
488 | ||
f5e99456 NB |
489 | /* This function reads the file, but does not start preprocessing. It |
490 | returns the name of the original file; this is the same as the | |
491 | input file, except for preprocessed input. This will generate at | |
492 | least one file change callback, and possibly a line change callback | |
493 | too. If there was an error opening the file, it returns NULL. | |
494 | ||
495 | If you want cpplib to manage its own hashtable, pass in a NULL | |
496 | pointer. Otherise you should pass in an initialised hash table | |
497 | that cpplib will share; this technique is used by the C front | |
498 | ends. */ | |
499 | extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *, | |
500 | struct ht *)); | |
501 | ||
502 | /* Deferred handling of command line options that can generate debug | |
503 | callbacks, such as -D and -imacros. Call this after | |
504 | cpp_read_main_file. The front ends need this separation so they | |
505 | can initialize debug output with the original file name, returned | |
506 | from cpp_read_main_file, before they get debug callbacks. */ | |
507 | extern void cpp_finish_options PARAMS ((cpp_reader *)); | |
508 | ||
509 | /* Call this to release the handle at the end of preprocessing. Any | |
510 | use of the handle after this function returns is invalid. Returns | |
511 | cpp_errors (pfile). */ | |
512 | extern int cpp_destroy PARAMS ((cpp_reader *)); | |
513 | ||
7e96d768 NB |
514 | /* Error count. */ |
515 | extern unsigned int cpp_errors PARAMS ((cpp_reader *)); | |
516 | ||
93c80368 | 517 | extern unsigned int cpp_token_len PARAMS ((const cpp_token *)); |
dd07b884 NB |
518 | extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *, |
519 | const cpp_token *)); | |
93c80368 NB |
520 | extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *, |
521 | unsigned char *)); | |
58fea6af ZW |
522 | extern void cpp_register_pragma PARAMS ((cpp_reader *, |
523 | const char *, const char *, | |
524 | void (*) PARAMS ((cpp_reader *)))); | |
58fea6af | 525 | |
93c80368 | 526 | extern void cpp_finish PARAMS ((cpp_reader *)); |
93c80368 NB |
527 | extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *, |
528 | const cpp_token *)); | |
4ed5bcfb | 529 | extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *)); |
93c80368 NB |
530 | extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *, |
531 | const cpp_hashnode *)); | |
bdcbe496 | 532 | extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int)); |
041c3194 | 533 | |
c8a96070 NB |
534 | /* Evaluate a CPP_CHAR or CPP_WCHAR token. */ |
535 | extern HOST_WIDE_INT | |
536 | cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *, | |
f458d1d5 | 537 | int, unsigned int *)); |
c8a96070 | 538 | |
7ceb3598 NB |
539 | extern void cpp_define PARAMS ((cpp_reader *, const char *)); |
540 | extern void cpp_assert PARAMS ((cpp_reader *, const char *)); | |
541 | extern void cpp_undef PARAMS ((cpp_reader *, const char *)); | |
542 | extern void cpp_unassert PARAMS ((cpp_reader *, const char *)); | |
7f2935c7 | 543 | |
711b8824 | 544 | extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *, |
0bda4760 | 545 | const unsigned char *, size_t, |
29401c30 | 546 | int, int)); |
711b8824 | 547 | extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int)); |
c5a04734 | 548 | |
ebef4e8c NB |
549 | /* Diagnostic levels. To get a dianostic without associating a |
550 | position in the translation unit with it, use cpp_error_with_line | |
551 | with a line number of zero. */ | |
552 | ||
553 | /* Warning, an error with -Werror. */ | |
554 | #define DL_WARNING 0x00 | |
555 | /* Same as DL_WARNING, except it is not suppressed in system headers. */ | |
556 | #define DL_WARNING_SYSHDR 0x01 | |
557 | /* Warning, an error with -pedantic-errors or -Werror. */ | |
558 | #define DL_PEDWARN 0x02 | |
559 | /* An error. */ | |
560 | #define DL_ERROR 0x03 | |
561 | /* A fatal error. We do not exit, to support use of cpplib as a | |
562 | library, but may only return CPP_EOF tokens thereon. It is the | |
563 | caller's responsibility to check CPP_FATAL_ERRORS. */ | |
564 | #define DL_FATAL 0x04 | |
565 | /* An internal consistency check failed. Prints "internal error: ", | |
566 | otherwise the same as DL_FATAL. */ | |
567 | #define DL_ICE 0x05 | |
568 | /* Extracts a diagnostic level from an int. */ | |
569 | #define DL_EXTRACT(l) (l & 0xf) | |
570 | /* Non-zero if a diagnostic level is one of the warnings. */ | |
571 | #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \ | |
572 | && DL_EXTRACT (l) <= DL_PEDWARN) | |
573 | ||
c1212d2f ZW |
574 | /* N.B. The error-message-printer prototypes have not been nicely |
575 | formatted because exgettext needs to see 'msgid' on the same line | |
576 | as the name of the function in order to work properly. Only the | |
577 | string argument gets a name in an effort to keep the lines from | |
578 | getting ridiculously oversized. */ | |
579 | ||
ebef4e8c NB |
580 | /* Output a diagnostic of some kind. */ |
581 | extern void cpp_error PARAMS ((cpp_reader *, int, const char *msgid, ...)) | |
582 | ATTRIBUTE_PRINTF_3; | |
583 | ||
584 | /* Output a diagnostic of severity LEVEL, with "MSG: " preceding the | |
585 | error string of errno. No location is printed. */ | |
586 | extern void cpp_errno PARAMS ((cpp_reader *, int level, const char *msg)); | |
587 | ||
588 | /* Same as cpp_error, except additionally specifies a position as a | |
589 | (translation unit) physical line and physical column. If the line is | |
590 | zero, then no location is printed. */ | |
591 | extern void cpp_error_with_line PARAMS ((cpp_reader *, int, unsigned, unsigned, const char *msgid, ...)) | |
592 | ATTRIBUTE_PRINTF_5; | |
f2d5f0cc ZW |
593 | |
594 | /* In cpplex.c */ | |
bfb9dc7f ZW |
595 | extern int cpp_ideq PARAMS ((const cpp_token *, |
596 | const char *)); | |
93c80368 NB |
597 | extern void cpp_output_line PARAMS ((cpp_reader *, FILE *)); |
598 | extern void cpp_output_token PARAMS ((const cpp_token *, FILE *)); | |
599 | extern const char *cpp_type2name PARAMS ((enum cpp_ttype)); | |
62729350 NB |
600 | extern unsigned int cpp_parse_escape PARAMS ((cpp_reader *, |
601 | const unsigned char **, | |
602 | const unsigned char *, | |
f458d1d5 | 603 | unsigned HOST_WIDE_INT)); |
1368ee70 | 604 | |
f2d5f0cc | 605 | /* In cpphash.c */ |
2a967f3d NB |
606 | |
607 | /* Lookup an identifier in the hashtable. Puts the identifier in the | |
608 | table if it is not already there. */ | |
93c80368 | 609 | extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *, |
2a967f3d NB |
610 | const unsigned char *, |
611 | unsigned int)); | |
612 | ||
613 | typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *)); | |
93c80368 | 614 | extern void cpp_forall_identifiers PARAMS ((cpp_reader *, |
2a967f3d | 615 | cpp_cb, void *)); |
926c5678 | 616 | |
58fea6af | 617 | /* In cppmacro.c */ |
ef6e958a | 618 | extern void cpp_scan_nooutput PARAMS ((cpp_reader *)); |
c691145a | 619 | extern int cpp_sys_macro_p PARAMS ((cpp_reader *)); |
dcc229e5 ZW |
620 | extern unsigned char *cpp_quote_string PARAMS ((unsigned char *, |
621 | const unsigned char *, | |
622 | unsigned int)); | |
6de1e2a9 | 623 | |
add7091b | 624 | /* In cppfiles.c */ |
711b8824 | 625 | extern int cpp_included PARAMS ((cpp_reader *, const char *)); |
614c7d37 | 626 | extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int)); |
b0699dad | 627 | |
aaf93206 NB |
628 | /* In cppmain.c */ |
629 | extern void cpp_preprocess_file PARAMS ((cpp_reader *)); | |
630 | ||
7f2935c7 PB |
631 | #ifdef __cplusplus |
632 | } | |
633 | #endif | |
88657302 RH |
634 | |
635 | #endif /* ! GCC_CPPLIB_H */ |