1 /* Definitions for CPP library.
2 Copyright (C) 1995, 96-99, 2000 Free Software Foundation, Inc.
3 Written by Per Bothner, 1994-95.
5 This program is free software; you can redistribute it and/or modify it
6 under the terms of the GNU General Public License as published by the
7 Free Software Foundation; either version 2, or (at your option) any
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19 In other words, you are welcome to use, share and improve this program.
20 You are forbidden to forbid anyone else to use, share and improve
21 what you give them. Help stamp out software-hoarding! */
22 #ifndef __GCC_CPPLIB__
23 #define __GCC_CPPLIB__
25 #include <sys/types.h>
31 typedef unsigned char U_CHAR;
33 typedef struct cpp_reader cpp_reader;
34 typedef struct cpp_buffer cpp_buffer;
35 typedef struct cpp_options cpp_options;
42 CPP_VSPACE, /* newlines and #line directives */
53 CPP_SEMICOLON,/* ";" */
54 CPP_3DOTS, /* "..." */
55 CPP_POP /* We're about to pop the buffer stack. */
58 typedef enum cpp_token (*parse_underflow_t) PARAMS((cpp_reader *));
59 typedef int (*parse_cleanup_t) PARAMS((cpp_buffer *, cpp_reader *));
61 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
62 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
63 extern enum cpp_token cpp_get_token PARAMS ((cpp_reader *));
64 extern enum cpp_token cpp_get_non_space_token PARAMS ((cpp_reader *));
65 extern enum cpp_token get_directive_token PARAMS ((cpp_reader *));
67 /* This frees resources used by PFILE. */
68 extern void cpp_cleanup PARAMS ((cpp_reader *PFILE));
72 unsigned char *cur; /* current position */
73 unsigned char *rlimit; /* end of valid data */
74 unsigned char *buf; /* entire buffer */
75 unsigned char *alimit; /* end of allocated buffer */
76 unsigned char *line_base; /* start of current line */
78 struct cpp_buffer *prev;
80 /* Real filename. (Alias to ->ihash->fname, obsolete). */
82 /* Filename specified with #line command. */
83 const char *nominal_fname;
84 /* Last filename specified with #line command. */
85 const char *last_nominal_fname;
86 /* Actual directory of this file, used only for "" includes */
87 struct file_name_list *actual_dir;
89 /* Pointer into the include hash table. Used for include_next and
90 to record control macros. */
91 struct include_hash *ihash;
93 long lineno; /* Line number at CPP_LINE_BASE. */
94 long colno; /* Column number at CPP_LINE_BASE. */
95 long mark; /* Saved position for lengthy backtrack. */
96 parse_underflow_t underflow;
97 parse_cleanup_t cleanup;
100 /* Value of if_stack at start of this file.
101 Used to prohibit unmatched #endif (etc) in an include file. */
102 struct if_stack *if_stack;
104 /* True if this is a header file included using <FILENAME>. */
105 char system_header_p;
108 /* True if buffer contains escape sequences.
109 Currently there are two kinds:
110 "\r-" means following identifier should not be macro-expanded.
111 "\r " means a token-separator. This turns into " " in final output
112 if not stringizing and needed to separate tokens; otherwise nothing.
113 Any other two-character sequence beginning with \r is an error.
115 If this is NOT set, then \r is a one-character escape meaning backslash
116 newline. This is guaranteed not to occur in the middle of a token.
117 The two interpretations of \r do not conflict, because the two-character
118 escapes are used only in macro buffers, and backslash-newline is removed
119 from macro expansion text in collect_expansion and/or macarg. */
122 /* Used by the C++ frontend to implement redirected input (such as for
123 default argument and/or template parsing). */
126 /* True if we have already warned about C++ comments in this file.
127 The warning happens only for C89 extended mode with -pedantic on,
128 and only once per file (otherwise it would be far too noisy). */
129 char warned_cplusplus_comments;
132 struct file_name_map_list;
134 /* Maximum nesting of cpp_buffers. We use a static limit, partly for
135 efficiency, and partly to limit runaway recursion. */
136 #define CPP_STACK_MAX 200
138 /* A cpp_reader encapsulates the "state" of a pre-processor run.
139 Applying cpp_get_token repeatedly yields a stream of pre-processor
140 tokens. Usually, there is only one cpp_reader object active. */
144 parse_underflow_t get_token;
148 /* A buffer used for both for cpp_get_token's output, and also internally. */
149 unsigned char *token_buffer;
150 /* Allocated size of token_buffer. CPP_RESERVE allocates space. */
151 unsigned int token_buffer_size;
152 /* End of the written part of token_buffer. */
153 unsigned char *limit;
155 /* Error counter for exit code */
158 /* Line where a newline was first seen in a string constant. */
159 int multiline_string_line;
161 /* Current depth in #include directives that use <...>. */
162 int system_include_depth;
164 /* Current depth of buffer stack. */
165 int buffer_stack_depth;
167 /* Hash table of macros and assertions. See cpphash.c */
168 #define HASHSIZE 1403
169 struct hashnode **hashtab;
171 /* Hash table of other included files. See cppfiles.c */
172 #define ALL_INCLUDE_HASHSIZE 71
173 struct include_hash *all_include_files[ALL_INCLUDE_HASHSIZE];
175 /* Chain of `actual directory' file_name_list entries,
177 struct file_name_list *actual_dirs;
179 /* Current maximum length of directory names in the search path
180 for include files. (Altered as we get more of them.) */
181 unsigned int max_include_len;
183 struct if_stack *if_stack;
185 /* Nonzero means we have printed (while error reporting) a list of
186 containing files that matches the current status. */
187 char input_stack_listing_current;
189 /* If non-zero, macros are not expanded. */
190 char no_macro_expand;
192 /* If non-zero, directives cause a hard error. Used when parsing
197 /* Print column number in error messages. */
200 /* We're printed a warning recommending against using #import. */
203 /* If true, character between '<' and '>' are a single (string) token. */
204 char parsing_include_directive;
206 /* True if escape sequences (as described for has_escapes in
207 parse_buffer) should be emitted. */
210 /* 0: Have seen non-white-space on this line.
211 1: Only seen white space so far on this line.
212 2: Only seen white space so far in this file. */
213 char only_seen_white;
215 /* Nonzero means this file was included with a -imacros or -include
216 command line and should not be recorded as an include file. */
224 /* Buffer of -M output. */
227 /* Number of bytes allocated in above. */
228 int deps_allocated_size;
230 /* Number of bytes used. */
233 /* Number of bytes since the last newline. */
236 /* A buffer and a table, used only by read_and_prescan (in cppfiles.c)
237 which are allocated once per cpp_reader object to keep them off the
238 stack and avoid setup costs. */
239 U_CHAR *input_buffer;
240 U_CHAR *input_speccase;
241 size_t input_buffer_len;
244 #define CPP_FATAL_LIMIT 1000
245 /* True if we have seen a "fatal" error. */
246 #define CPP_FATAL_ERRORS(READER) ((READER)->errors >= CPP_FATAL_LIMIT)
248 #define CPP_BUF_PEEK(BUFFER) \
249 ((BUFFER)->cur < (BUFFER)->rlimit ? *(BUFFER)->cur : EOF)
250 #define CPP_BUF_GET(BUFFER) \
251 ((BUFFER)->cur < (BUFFER)->rlimit ? *(BUFFER)->cur++ : EOF)
252 #define CPP_FORWARD(BUFFER, N) ((BUFFER)->cur += (N))
254 /* Macros for manipulating the token_buffer. */
256 #define CPP_OUT_BUFFER(PFILE) ((PFILE)->token_buffer)
258 /* Number of characters currently in PFILE's output buffer. */
259 #define CPP_WRITTEN(PFILE) ((size_t)((PFILE)->limit - (PFILE)->token_buffer))
260 #define CPP_PWRITTEN(PFILE) ((PFILE)->limit)
262 /* Make sure PFILE->token_buffer has space for at least N more characters. */
263 #define CPP_RESERVE(PFILE, N) \
264 (CPP_WRITTEN (PFILE) + (size_t)(N) > (PFILE)->token_buffer_size \
265 && (cpp_grow_buffer (PFILE, N), 0))
267 /* Append string STR (of length N) to PFILE's output buffer.
268 Assume there is enough space. */
269 #define CPP_PUTS_Q(PFILE, STR, N) \
270 (memcpy ((PFILE)->limit, STR, (N)), (PFILE)->limit += (N))
271 /* Append string STR (of length N) to PFILE's output buffer. Make space. */
272 #define CPP_PUTS(PFILE, STR, N) CPP_RESERVE(PFILE, N), CPP_PUTS_Q(PFILE, STR,N)
273 /* Append character CH to PFILE's output buffer. Assume sufficient space. */
274 #define CPP_PUTC_Q(PFILE, CH) (*(PFILE)->limit++ = (CH))
275 /* Append character CH to PFILE's output buffer. Make space if need be. */
276 #define CPP_PUTC(PFILE, CH) (CPP_RESERVE (PFILE, 1), CPP_PUTC_Q (PFILE, CH))
277 /* Make sure PFILE->limit is followed by '\0'. */
278 #define CPP_NUL_TERMINATE_Q(PFILE) (*(PFILE)->limit = 0)
279 #define CPP_NUL_TERMINATE(PFILE) (CPP_RESERVE(PFILE, 1), *(PFILE)->limit = 0)
280 #define CPP_ADJUST_WRITTEN(PFILE,DELTA) ((PFILE)->limit += (DELTA))
281 #define CPP_SET_WRITTEN(PFILE,N) ((PFILE)->limit = (PFILE)->token_buffer + (N))
283 /* Advance the current line by one. */
284 #define CPP_BUMP_BUFFER_LINE(PBUF) ((PBUF)->lineno++,\
285 (PBUF)->line_base = (PBUF)->cur)
286 #define CPP_BUMP_LINE(PFILE) CPP_BUMP_BUFFER_LINE(CPP_BUFFER(PFILE))
288 #define CPP_OPTIONS(PFILE) ((PFILE)->opts)
289 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
290 #define CPP_PREV_BUFFER(BUFFER) ((BUFFER)->prev)
291 /* The bottom of the buffer stack. */
292 #define CPP_NULL_BUFFER(PFILE) NULL
294 /* The `pending' structure accumulates all the options that are not
295 actually processed until we hit cpp_start_read. It consists of
296 several lists, one for each type of option. We keep both head and
297 tail pointers for quick insertion. */
300 struct pending_option *define_head, *define_tail;
301 struct pending_option *assert_head, *assert_tail;
303 struct file_name_list *quote_head, *quote_tail;
304 struct file_name_list *brack_head, *brack_tail;
305 struct file_name_list *systm_head, *systm_tail;
306 struct file_name_list *after_head, *after_tail;
308 struct pending_option *imacros_head, *imacros_tail;
309 struct pending_option *include_head, *include_tail;
312 /* Pointed to by cpp_reader.opts. */
316 /* Name of output file, for error messages. */
317 const char *out_fname;
319 struct file_name_map_list *map_list;
321 /* Non-0 means -v, so print the full set of include dirs. */
324 /* Nonzero means use extra default include directories for C++. */
328 /* Nonzero means handle cplusplus style comments */
330 char cplusplus_comments;
332 /* Nonzero means handle #import, for objective C. */
336 /* Nonzero means this is an assembly file, so ignore unrecognized
337 directives and the "# 33" form of #line, both of which are
338 probably comments. Also, permit unbalanced ' strings (again,
339 likely to be in comments). */
343 /* Nonzero means this is Fortran, and we don't know where the
344 comments are, so permit unbalanced ' strings. Unlike lang_asm,
345 this does not ignore unrecognized directives. */
349 /* Nonzero means handle CHILL comment syntax
350 and output CHILL string delimiter for __DATE___ etc. */
354 /* Nonzero means don't copy comments into the output file. */
356 char discard_comments;
358 /* Nonzero means process the ANSI trigraph sequences. */
362 /* Nonzero means print the names of included files rather than
363 the preprocessed output. 1 means just the #include "...",
364 2 means #include <...> as well. */
368 /* Nonzero if missing .h files in -M output are assumed to be generated
369 files and not errors. */
371 char print_deps_missing_files;
373 /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
374 char print_deps_append;
376 /* Nonzero means print names of header files (-H). */
378 char print_include_names;
380 /* Nonzero means try to make failure to fit ANSI C an error. */
382 char pedantic_errors;
384 /* Nonzero means don't print warning messages. */
386 char inhibit_warnings;
388 /* Nonzero means don't print error messages. Has no option to select it,
389 but can be set by a user of cpplib (e.g. fix-header). */
393 /* Nonzero means warn if slash-star appears in a comment. */
397 /* Nonzero means warn if there are any trigraphs. */
401 /* Nonzero means warn if #import is used. */
405 /* Nonzero means warn if a macro argument is (or would be)
406 stringified with -traditional. */
410 /* Nonzero means turn warnings into errors. */
412 char warnings_are_errors;
414 /* Nonzero causes output not to be done,
415 but directives such as #define that have side effects
420 /* Nonzero means we should look for header.gcc files that remap file
424 /* Nonzero means don't output line number information. */
426 char no_line_commands;
428 /* Nonzero means output the text in failing conditionals,
429 inside #failed ... #endfailed. */
431 char output_conditionals;
433 /* Nonzero means -I- has been seen,
434 so don't look for #include "foo" the source-file directory. */
437 /* Zero means dollar signs are punctuation.
438 This used to be needed for conformance to the C Standard,
439 before the C Standard was corrected. */
440 char dollars_in_ident;
442 /* Nonzero means try to imitate old fashioned non-ANSI preprocessor. */
445 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
448 /* Nonzero for the 1989 C Standard, including corrigenda and amendments. */
451 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
454 /* Nonzero means give all the error messages the ANSI standard requires. */
457 /* Nonzero means we're looking at already preprocessed code, so don't
458 bother trying to do macro expansion and whatnot. */
461 char done_initializing;
463 /* Search paths for include files. */
464 struct file_name_list *quote_include; /* First dir to search for "file" */
465 struct file_name_list *bracket_include;/* First dir to search for <file> */
467 /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
468 in the standard include file directories. */
469 char *include_prefix;
470 int include_prefix_len;
472 char no_standard_includes;
473 char no_standard_cplusplus_includes;
475 /* dump_only means inhibit output of the preprocessed text
476 and instead output the definitions of all user-defined
477 macros in a form suitable for use as input to cccp.
478 dump_names means pass #define and the macro name through to output.
479 dump_definitions means pass the whole definition (plus #define) through
482 enum {dump_none = 0, dump_only, dump_names, dump_definitions}
485 /* Nonzero means pass all #define and #undef directives which we actually
486 process through to the output stream. This feature is used primarily
487 to allow cc1 to record the #defines and #undefs for the sake of
488 debuggers which understand about preprocessor macros, but it may
489 also be useful with -E to figure out how symbols are defined, and
490 where they are defined. */
493 /* Nonzero means pass #include lines through to the output,
494 even if they are ifdefed out. */
497 /* Pending options - -D, -U, -A, -I, -ixxx. */
498 struct cpp_pending *pending;
500 /* File name which deps are being written to.
501 This is 0 if deps are being written to stdout. */
504 /* Target-name to write with the dependency information. */
508 #define CPP_TRADITIONAL(PFILE) (CPP_OPTIONS(PFILE)-> traditional)
509 #define CPP_WARN_UNDEF(PFILE) (CPP_OPTIONS(PFILE)->warn_undef)
510 #define CPP_C89(PFILE) (CPP_OPTIONS(PFILE)->c89)
511 #define CPP_PEDANTIC(PFILE) (CPP_OPTIONS (PFILE)->pedantic)
512 #define CPP_PREPROCESSED(PFILE) (CPP_OPTIONS (PFILE)->preprocessed)
513 #define CPP_PRINT_DEPS(PFILE) (CPP_OPTIONS (PFILE)->print_deps)
515 /* List of directories to look for include files in. */
516 struct file_name_list
518 struct file_name_list *next;
519 struct file_name_list *alloc; /* for the cache of
520 current directory entries */
523 /* We use these to tell if the directory mentioned here is a duplicate
524 of an earlier directory on the search path. */
527 /* If the following is nonzero, it is a C-language system include
530 /* Mapping of file names for this directory.
531 Only used on MS-DOS and related platforms. */
532 struct file_name_map *name_map;
534 #define ABSOLUTE_PATH ((struct file_name_list *)-1)
536 /* This structure is used for the table of all includes. It is
537 indexed by the `short name' (the name as it appeared in the
538 #include statement) which is stored in *nshort. */
541 struct include_hash *next;
542 /* Next file with the same short name but a
543 different (partial) pathname). */
544 struct include_hash *next_this_file;
546 /* Location of the file in the include search path.
547 Used for include_next */
548 struct file_name_list *foundhere;
549 const char *name; /* (partial) pathname of file */
550 const char *nshort; /* name of file as referenced in #include */
551 const char *control_macro; /* macro, if any, preventing reinclusion -
552 see redundant_include_p */
553 char *buf, *limit; /* for file content cache,
554 not yet implemented */
557 /* Name under which this program was invoked. */
559 extern const char *progname;
561 /* The structure of a node in the hash table. The hash table
562 has entries for all tokens defined by #define commands (type T_MACRO),
563 plus some special tokens like __LINE__ (these each have their own
564 type, and the appropriate code is run when that type of node is seen.
565 It does not contain control words like "#define", which are recognized
566 by a separate piece of code. */
568 /* different flavors of hash nodes --- also used in keyword table */
570 T_DEFINE = 1, /* the `#define' keyword */
571 T_INCLUDE, /* the `#include' keyword */
572 T_INCLUDE_NEXT, /* the `#include_next' keyword */
573 T_IMPORT, /* the `#import' keyword */
574 T_IFDEF, /* the `#ifdef' keyword */
575 T_IFNDEF, /* the `#ifndef' keyword */
576 T_IF, /* the `#if' keyword */
577 T_ELSE, /* `#else' */
578 T_PRAGMA, /* `#pragma' */
579 T_ELIF, /* `#elif' */
580 T_UNDEF, /* `#undef' */
581 T_LINE, /* `#line' */
582 T_ERROR, /* `#error' */
583 T_WARNING, /* `#warning' */
584 T_ENDIF, /* `#endif' */
585 T_SCCS, /* `#sccs', used on system V. */
586 T_IDENT, /* `#ident', used on system V. */
587 T_ASSERT, /* `#assert', taken from system V. */
588 T_UNASSERT, /* `#unassert', taken from system V. */
589 T_SPECLINE, /* special symbol `__LINE__' */
590 T_DATE, /* `__DATE__' */
591 T_FILE, /* `__FILE__' */
592 T_BASE_FILE, /* `__BASE_FILE__' */
593 T_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
594 T_VERSION, /* `__VERSION__' */
595 T_TIME, /* `__TIME__' */
596 T_STDC, /* `__STDC__' */
597 T_CONST, /* Constant string, used by `__SIZE_TYPE__' etc */
598 T_MACRO, /* macro defined by `#define' */
599 T_DISABLED, /* macro temporarily turned off for rescan */
600 T_POISON, /* defined with `#pragma poison' */
601 T_UNUSED /* Used for something not defined. */
604 /* Character classes.
605 If the definition of `numchar' looks odd to you, please look up the
606 definition of a pp-number in the C standard [section 6.4.8 of C99] */
607 #define ISidnum 0x01 /* a-zA-Z0-9_ */
608 #define ISidstart 0x02 /* _a-zA-Z */
609 #define ISnumstart 0x04 /* 0-9 */
610 #define IShspace 0x08 /* ' ' \t \f \v */
611 #define ISspace 0x10 /* ' ' \t \f \v \n */
613 #define is_idchar(x) (IStable[x] & ISidnum)
614 #define is_numchar(x) (IStable[x] & ISidnum)
615 #define is_idstart(x) (IStable[x] & ISidstart)
616 #define is_numstart(x) (IStable[x] & ISnumstart)
617 #define is_hspace(x) (IStable[x] & IShspace)
618 #define is_space(x) (IStable[x] & ISspace)
620 /* This table is not really `const', but it is only modified at
621 initialization time, in a separate translation unit from the rest
622 of the library. We let the rest of the library think it is `const'
623 to get better code and some additional compile-time checks. */
625 #define FAKE_CONST const
627 extern FAKE_CONST unsigned char IStable[256];
630 /* Stack of conditionals currently in progress
631 (including both successful and failing conditionals). */
634 struct if_stack *next; /* for chaining to the next stack frame */
635 const char *fname; /* copied from input when frame is made */
636 int lineno; /* similarly */
637 int if_succeeded; /* true if a leg of this if-group
638 has been passed through rescan */
639 unsigned char *control_macro; /* For #ifndef at start of file,
640 this is the macro name tested. */
641 enum node_type type; /* type of last directive seen in this group */
643 typedef struct if_stack IF_STACK_FRAME;
645 extern void cpp_buf_line_and_col PARAMS((cpp_buffer *, long *, long *));
646 extern cpp_buffer* cpp_file_buffer PARAMS((cpp_reader *));
647 extern void cpp_define PARAMS ((cpp_reader *, unsigned char *));
648 extern void cpp_assert PARAMS ((cpp_reader *, unsigned char *));
649 extern void cpp_undef PARAMS ((cpp_reader *, unsigned char *));
650 extern void cpp_unassert PARAMS ((cpp_reader *, unsigned char *));
652 /* N.B. The error-message-printer prototypes have not been nicely
653 formatted because exgettext needs to see 'msgid' on the same line
654 as the name of the function in order to work properly. Only the
655 string argument gets a name in an effort to keep the lines from
656 getting ridiculously oversized. */
658 extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
660 extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
662 extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
664 extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
666 extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
668 extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
670 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
672 extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
674 extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
676 extern void cpp_pedwarn_with_file_and_line PARAMS ((cpp_reader *, const char *, int, int, const char *msgid, ...))
678 extern void cpp_error_from_errno PARAMS ((cpp_reader *, const char *));
679 extern void cpp_notice_from_errno PARAMS ((cpp_reader *, const char *));
681 extern void cpp_grow_buffer PARAMS ((cpp_reader *, long));
682 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
683 unsigned char *, long));
684 extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
685 extern int cpp_defined PARAMS ((cpp_reader *, const U_CHAR *, int));
687 extern void cpp_reader_init PARAMS ((cpp_reader *));
688 extern void cpp_options_init PARAMS ((cpp_options *));
689 extern int cpp_start_read PARAMS ((cpp_reader *, char *));
690 extern int cpp_read_check_assertion PARAMS ((cpp_reader *));
691 extern void cpp_finish PARAMS ((cpp_reader *));
693 extern void quote_string PARAMS ((cpp_reader *, const char *));
694 extern void cpp_expand_to_buffer PARAMS ((cpp_reader *, const U_CHAR *,
696 extern void cpp_scan_buffer PARAMS ((cpp_reader *));
697 extern int check_macro_name PARAMS ((cpp_reader *, const U_CHAR *));
699 /* Last arg to output_line_command. */
700 enum file_change_code {same_file, enter_file, leave_file};
701 extern void output_line_command PARAMS ((cpp_reader *,
702 enum file_change_code));
705 extern void simplify_pathname PARAMS ((char *));
706 extern void merge_include_chains PARAMS ((struct cpp_options *));
707 extern int find_include_file PARAMS ((cpp_reader *, const char *,
708 struct file_name_list *,
709 struct include_hash **,
711 extern int finclude PARAMS ((cpp_reader *, int,
712 struct include_hash *));
713 extern void deps_output PARAMS ((cpp_reader *,
715 extern struct include_hash *include_hash PARAMS ((cpp_reader *, const char *, int));
720 #endif /* __GCC_CPPLIB__ */