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[official-gcc.git] / gcc / cpplib.h
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1 /* Definitions for CPP library.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 Free Software Foundation, Inc.
4 Written by Per Bothner, 1994-95.
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.
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.
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
18 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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! */
23 #ifndef GCC_CPPLIB_H
24 #define GCC_CPPLIB_H
26 #include <sys/types.h>
27 #include "hashtable.h"
28 #include "line-map.h"
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
34 /* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
35 #ifndef GCC_C_PRAGMA_H
36 typedef struct cpp_reader cpp_reader;
37 #endif
38 typedef struct cpp_buffer cpp_buffer;
39 typedef struct cpp_options cpp_options;
40 typedef struct cpp_token cpp_token;
41 typedef struct cpp_string cpp_string;
42 typedef struct cpp_hashnode cpp_hashnode;
43 typedef struct cpp_macro cpp_macro;
44 typedef struct cpp_callbacks cpp_callbacks;
46 struct answer;
47 struct file_name_map_list;
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.
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 ">>". */
57 /* Positions in the table. */
58 #define CPP_LAST_EQ CPP_MAX
59 #define CPP_FIRST_DIGRAPH CPP_HASH
60 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
62 #define TTYPE_TABLE \
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, "<<") \
77 OP(CPP_MIN, "<?") /* extension */ \
78 OP(CPP_MAX, ">?") \
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, "<=") \
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, "<<=") \
103 OP(CPP_MIN_EQ, "<?=") /* extension */ \
104 OP(CPP_MAX_EQ, ">?=") \
105 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
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, "...") \
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, ".*") \
122 OP(CPP_ATSIGN, "@") /* used in Objective C */ \
124 TK(CPP_NAME, SPELL_IDENT) /* word */ \
125 TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \
127 TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
128 TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
129 TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
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 */ \
135 TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \
136 /* SPELL_NUMBER happens to DTRT. */ \
137 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
138 TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */ \
139 TK(CPP_EOF, SPELL_NONE) /* End of line or file. */
141 #define OP(e, s) e,
142 #define TK(e, s) e,
143 enum cpp_ttype
145 TTYPE_TABLE
146 N_TTYPES
148 #undef OP
149 #undef TK
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};
155 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
156 struct cpp_string
158 unsigned int len;
159 const unsigned char *text;
162 /* Flags for the cpp_token structure. */
163 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
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. */
167 #define NAMED_OP (1 << 4) /* C++ named operators. */
168 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
169 #define BOL (1 << 6) /* Token at beginning of line. */
171 /* A preprocessing token. This has been carefully packed and should
172 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
173 struct cpp_token
175 unsigned int line; /* Logical line of first char of token. */
176 unsigned short col; /* Column of first char of token. */
177 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
178 unsigned char flags; /* flags - see above */
180 union
182 cpp_hashnode *node; /* An identifier. */
183 const cpp_token *source; /* Inherit padding from this token. */
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. */
187 } val;
190 /* A standalone character. We may want to make it unsigned for the
191 same reason we use unsigned char - to avoid signedness issues. */
192 typedef int cppchar_t;
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
197 macros in a form suitable for use as input to cpp.
198 dump_names means pass #define and the macro name through to output.
199 dump_definitions means pass the whole definition (plus #define) through
201 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
203 /* This structure is nested inside struct cpp_reader, and
204 carries all the options visible to the command line. */
205 struct cpp_options
207 /* Name of input and output files. */
208 const char *in_fname;
209 const char *out_fname;
211 /* Characters between tab stops. */
212 unsigned int tabstop;
214 /* Pending options - -D, -U, -A, -I, -ixxx. */
215 struct cpp_pending *pending;
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;
221 /* Search paths for include files. */
222 struct search_path *quote_include; /* "" */
223 struct search_path *bracket_include; /* <> */
225 /* Map between header names and file names, used only on DOS where
226 file names are limited in length. */
227 struct file_name_map_list *map_list;
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;
234 /* -fleading_underscore sets this to "_". */
235 const char *user_label_prefix;
237 /* The language we're preprocessing. */
238 enum c_lang lang;
240 /* Non-0 means -v, so print the full set of include dirs. */
241 unsigned char verbose;
243 /* Nonzero means chars are signed. */
244 unsigned char signed_char;
246 /* Nonzero means use extra default include directories for C++. */
247 unsigned char cplusplus;
249 /* Nonzero means handle cplusplus style comments */
250 unsigned char cplusplus_comments;
252 /* Nonzero means handle #import, for objective C. */
253 unsigned char objc;
255 /* Nonzero means don't copy comments into the output file. */
256 unsigned char discard_comments;
258 /* Nonzero means process the ISO trigraph sequences. */
259 unsigned char trigraphs;
261 /* Nonzero means process the ISO digraph sequences. */
262 unsigned char digraphs;
264 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
265 unsigned char extended_numbers;
267 /* Nonzero means print the names of included files rather than the
268 preprocessed output. 1 means just the #include "...", 2 means
269 #include <...> as well. */
270 unsigned char print_deps;
272 /* Nonzero if phony targets are created for each header. */
273 unsigned char deps_phony_targets;
275 /* Nonzero if missing .h files in -M output are assumed to be
276 generated files and not errors. */
277 unsigned char print_deps_missing_files;
279 /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
280 unsigned char print_deps_append;
282 /* Nonzero means print names of header files (-H). */
283 unsigned char print_include_names;
285 /* Nonzero means cpp_pedwarn causes a hard error. */
286 unsigned char pedantic_errors;
288 /* Nonzero means don't print warning messages. */
289 unsigned char inhibit_warnings;
291 /* Nonzero means don't suppress warnings from system headers. */
292 unsigned char warn_system_headers;
294 /* Nonzero means don't print error messages. Has no option to
295 select it, but can be set by a user of cpplib (e.g. fix-header). */
296 unsigned char inhibit_errors;
298 /* Nonzero means warn if slash-star appears in a comment. */
299 unsigned char warn_comments;
301 /* Nonzero means warn if there are any trigraphs. */
302 unsigned char warn_trigraphs;
304 /* Nonzero means warn if #import is used. */
305 unsigned char warn_import;
307 /* Nonzero means warn about various incompatibilities with
308 traditional C. */
309 unsigned char warn_traditional;
311 /* Nonzero means turn warnings into errors. */
312 unsigned char warnings_are_errors;
314 /* Nonzero causes output not to be done, but directives such as
315 #define that have side effects are still obeyed. */
316 unsigned char no_output;
318 /* Nonzero means we should look for header.gcc files that remap file
319 names. */
320 unsigned char remap;
322 /* Nonzero means don't output line number information. */
323 unsigned char no_line_commands;
325 /* Nonzero means -I- has been seen, so don't look for #include "foo"
326 the source-file directory. */
327 unsigned char ignore_srcdir;
329 /* Zero means dollar signs are punctuation. */
330 unsigned char dollars_in_ident;
332 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
333 unsigned char warn_undef;
335 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
336 unsigned char c99;
338 /* Nonzero means give all the error messages the ANSI standard requires. */
339 unsigned char pedantic;
341 /* Nonzero means we're looking at already preprocessed code, so don't
342 bother trying to do macro expansion and whatnot. */
343 unsigned char preprocessed;
345 /* Nonzero disables all the standard directories for headers. */
346 unsigned char no_standard_includes;
348 /* Nonzero disables the C++-specific standard directories for headers. */
349 unsigned char no_standard_cplusplus_includes;
351 /* Nonzero means dump macros in some fashion - see above. */
352 unsigned char dump_macros;
354 /* Nonzero means pass #include lines through to the output. */
355 unsigned char dump_includes;
357 /* Print column number in error messages. */
358 unsigned char show_column;
360 /* Nonzero means handle C++ alternate operator names. */
361 unsigned char operator_names;
363 /* True if --help, --version or --target-help appeared in the
364 options. Stand-alone CPP should then bail out after option
365 parsing; drivers might want to continue printing help. */
366 unsigned char help_only;
369 /* Call backs. */
370 struct cpp_callbacks
372 /* Called when a new line of preprocessed output is started. */
373 void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int));
374 void (*file_change) PARAMS ((cpp_reader *, const struct line_map *));
375 void (*include) PARAMS ((cpp_reader *, unsigned int,
376 const unsigned char *, const cpp_token *));
377 void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
378 void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
379 void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
380 void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
383 #define CPP_FATAL_LIMIT 1000
384 /* True if we have seen a "fatal" error. */
385 #define CPP_FATAL_ERRORS(PFILE) (cpp_errors (PFILE) >= CPP_FATAL_LIMIT)
387 /* Name under which this program was invoked. */
388 extern const char *progname;
390 /* The structure of a node in the hash table. The hash table has
391 entries for all identifiers: either macros defined by #define
392 commands (type NT_MACRO), assertions created with #assert
393 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
394 like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
395 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
396 identifier that behaves like an operator such as "xor".
397 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
398 diagnostic may be required for this node. Currently this only
399 applies to __VA_ARGS__ and poisoned identifiers. */
401 /* Hash node flags. */
402 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
403 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
404 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
405 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
406 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
407 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
409 /* Different flavors of hash node. */
410 enum node_type
412 NT_VOID = 0, /* No definition yet. */
413 NT_MACRO, /* A macro of some form. */
414 NT_ASSERTION /* Predicate for #assert. */
417 /* Different flavors of builtin macro. _Pragma is an operator, but we
418 handle it with the builtin code for efficiency reasons. */
419 enum builtin_type
421 BT_SPECLINE = 0, /* `__LINE__' */
422 BT_DATE, /* `__DATE__' */
423 BT_FILE, /* `__FILE__' */
424 BT_BASE_FILE, /* `__BASE_FILE__' */
425 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
426 BT_TIME, /* `__TIME__' */
427 BT_STDC, /* `__STDC__' */
428 BT_PRAGMA /* `_Pragma' operator */
431 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
432 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
433 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
434 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
436 /* The common part of an identifier node shared amongst all 3 C front
437 ends. Also used to store CPP identifiers, which are a superset of
438 identifiers in the grammatical sense. */
439 struct cpp_hashnode
441 struct ht_identifier ident;
442 unsigned short arg_index; /* Macro argument index. */
443 unsigned char directive_index; /* Index into directive table. */
444 unsigned char rid_code; /* Rid code - for front ends. */
445 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
446 unsigned char flags; /* CPP flags. */
448 union
450 cpp_macro *macro; /* If a macro. */
451 struct answer *answers; /* Answers to an assertion. */
452 enum cpp_ttype operator; /* Code for a named operator. */
453 enum builtin_type builtin; /* Code for a builtin macro. */
454 } value;
457 /* Call this first to get a handle to pass to other functions. */
458 extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
460 /* Call these to get pointers to the options and callback structures
461 for a given reader. These pointers are good until you call
462 cpp_finish on that reader. You can either edit the callbacks
463 through the pointer returned from cpp_get_callbacks, or set them
464 with cpp_set_callbacks. */
465 extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
466 extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
467 extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
468 extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
470 /* Now call cpp_handle_option[s] to handle 1[or more] switches. The
471 return value is the number of arguments used. If
472 cpp_handle_options returns without using all arguments, it couldn't
473 understand the next switch. When there are no switches left, you
474 must call cpp_post_options before calling cpp_read_main_file. Only
475 after cpp_post_options are the contents of the cpp_options
476 structure reliable. Options processing is not completed until you
477 call cpp_finish_options. */
478 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
479 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **, int));
480 extern void cpp_post_options PARAMS ((cpp_reader *));
482 /* This function reads the file, but does not start preprocessing. It
483 returns the name of the original file; this is the same as the
484 input file, except for preprocessed input. This will generate at
485 least one file change callback, and possibly a line change callback
486 too. If there was an error opening the file, it returns NULL.
488 If you want cpplib to manage its own hashtable, pass in a NULL
489 pointer. Otherise you should pass in an initialised hash table
490 that cpplib will share; this technique is used by the C front
491 ends. */
492 extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
493 struct ht *));
495 /* Deferred handling of command line options that can generate debug
496 callbacks, such as -D and -imacros. Call this after
497 cpp_read_main_file. The front ends need this separation so they
498 can initialize debug output with the original file name, returned
499 from cpp_read_main_file, before they get debug callbacks. */
500 extern void cpp_finish_options PARAMS ((cpp_reader *));
502 /* Call this to release the handle at the end of preprocessing. Any
503 use of the handle after this function returns is invalid. Returns
504 cpp_errors (pfile). */
505 extern int cpp_destroy PARAMS ((cpp_reader *));
507 /* Error count. */
508 extern unsigned int cpp_errors PARAMS ((cpp_reader *));
510 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
511 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
512 const cpp_token *));
513 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
514 unsigned char *));
515 extern void cpp_register_pragma PARAMS ((cpp_reader *,
516 const char *, const char *,
517 void (*) PARAMS ((cpp_reader *))));
519 extern void cpp_finish PARAMS ((cpp_reader *));
520 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
521 const cpp_token *));
522 extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *));
523 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
524 const cpp_hashnode *));
525 extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int));
527 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
528 extern HOST_WIDE_INT
529 cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
530 int, int, unsigned int *));
532 extern void cpp_define PARAMS ((cpp_reader *, const char *));
533 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
534 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
535 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
537 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
538 const unsigned char *, size_t,
539 int, int));
540 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
542 /* N.B. The error-message-printer prototypes have not been nicely
543 formatted because exgettext needs to see 'msgid' on the same line
544 as the name of the function in order to work properly. Only the
545 string argument gets a name in an effort to keep the lines from
546 getting ridiculously oversized. */
548 extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
549 ATTRIBUTE_PRINTF_2;
550 extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
551 ATTRIBUTE_PRINTF_2;
552 extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
553 ATTRIBUTE_PRINTF_2;
554 extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
555 ATTRIBUTE_PRINTF_2;
556 extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
557 ATTRIBUTE_PRINTF_2;
558 extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
559 ATTRIBUTE_PRINTF_2;
560 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
561 ATTRIBUTE_PRINTF_4;
562 extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
563 ATTRIBUTE_PRINTF_4;
564 extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
565 ATTRIBUTE_PRINTF_4;
566 extern void cpp_error_from_errno PARAMS ((cpp_reader *, const char *));
567 extern void cpp_notice_from_errno PARAMS ((cpp_reader *, const char *));
569 /* In cpplex.c */
570 extern int cpp_ideq PARAMS ((const cpp_token *,
571 const char *));
572 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
573 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
574 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
575 extern unsigned int cpp_parse_escape PARAMS ((cpp_reader *,
576 const unsigned char **,
577 const unsigned char *,
578 unsigned HOST_WIDE_INT, int));
580 /* In cpphash.c */
582 /* Lookup an identifier in the hashtable. Puts the identifier in the
583 table if it is not already there. */
584 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
585 const unsigned char *,
586 unsigned int));
588 typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
589 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
590 cpp_cb, void *));
592 /* In cppmacro.c */
593 extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
594 extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
595 extern unsigned char *cpp_quote_string PARAMS ((unsigned char *,
596 const unsigned char *,
597 unsigned int));
599 /* In cppfiles.c */
600 extern int cpp_included PARAMS ((cpp_reader *, const char *));
601 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
603 #ifdef __cplusplus
605 #endif
607 #endif /* ! GCC_CPPLIB_H */