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 /* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
33 typedef struct cpp_reader cpp_reader;
35 typedef struct cpp_buffer cpp_buffer;
36 typedef struct cpp_options cpp_options;
37 typedef struct cpp_token cpp_token;
38 typedef struct cpp_string cpp_string;
39 typedef struct cpp_hashnode cpp_hashnode;
40 typedef struct cpp_pool cpp_pool;
41 typedef struct cpp_macro cpp_macro;
42 typedef struct cpp_lexer_pos cpp_lexer_pos;
43 typedef struct cpp_lookahead cpp_lookahead;
45 struct directive; /* These are deliberately incomplete. */
50 struct file_name_map_list;
53 /* The first two groups, apart from '=', can appear in preprocessor
54 expressions. This allows a lookup table to be implemented in
57 The first group, to CPP_LAST_EQ, can be immediately followed by an
58 '='. The lexer needs operators ending in '=', like ">>=", to be in
59 the same order as their counterparts without the '=', like ">>". */
61 /* Positions in the table. */
62 #define CPP_LAST_EQ CPP_MAX
63 #define CPP_FIRST_DIGRAPH CPP_HASH
64 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
69 OP(CPP_GREATER, ">") /* compare */ \
71 OP(CPP_PLUS, "+") /* math */ \
76 OP(CPP_AND, "&") /* bit ops */ \
79 OP(CPP_RSHIFT, ">>") \
80 OP(CPP_LSHIFT, "<<") \
81 OP(CPP_MIN, "<?") /* extension */ \
85 OP(CPP_AND_AND, "&&") /* logical */ \
89 OP(CPP_COMMA, ",") /* grouping */ \
90 OP(CPP_OPEN_PAREN, "(") \
91 OP(CPP_CLOSE_PAREN, ")") \
92 OP(CPP_EQ_EQ, "==") /* compare */ \
93 OP(CPP_NOT_EQ, "!=") \
94 OP(CPP_GREATER_EQ, ">=") \
95 OP(CPP_LESS_EQ, "<=") \
97 OP(CPP_PLUS_EQ, "+=") /* math */ \
98 OP(CPP_MINUS_EQ, "-=") \
99 OP(CPP_MULT_EQ, "*=") \
100 OP(CPP_DIV_EQ, "/=") \
101 OP(CPP_MOD_EQ, "%=") \
102 OP(CPP_AND_EQ, "&=") /* bit ops */ \
103 OP(CPP_OR_EQ, "|=") \
104 OP(CPP_XOR_EQ, "^=") \
105 OP(CPP_RSHIFT_EQ, ">>=") \
106 OP(CPP_LSHIFT_EQ, "<<=") \
107 OP(CPP_MIN_EQ, "<?=") /* extension */ \
108 OP(CPP_MAX_EQ, ">?=") \
109 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
110 OP(CPP_HASH, "#") /* digraphs */ \
111 OP(CPP_PASTE, "##") \
112 OP(CPP_OPEN_SQUARE, "[") \
113 OP(CPP_CLOSE_SQUARE, "]") \
114 OP(CPP_OPEN_BRACE, "{") \
115 OP(CPP_CLOSE_BRACE, "}") \
116 /* The remainder of the punctuation. Order is not significant. */ \
117 OP(CPP_SEMICOLON, ";") /* structure */ \
118 OP(CPP_ELLIPSIS, "...") \
119 OP(CPP_PLUS_PLUS, "++") /* increment */ \
120 OP(CPP_MINUS_MINUS, "--") \
121 OP(CPP_DEREF, "->") /* accessors */ \
123 OP(CPP_SCOPE, "::") \
124 OP(CPP_DEREF_STAR, "->*") \
125 OP(CPP_DOT_STAR, ".*") \
127 TK(CPP_NAME, SPELL_IDENT) /* word */ \
128 TK(CPP_INT, SPELL_STRING) /* 23 */ \
129 TK(CPP_FLOAT, SPELL_STRING) /* 3.14159 */ \
130 TK(CPP_NUMBER, SPELL_STRING) /* 34_be+ta */ \
132 TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
133 TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
134 TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
136 TK(CPP_STRING, SPELL_STRING) /* "string" */ \
137 TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
138 TK(CPP_OSTRING, SPELL_STRING) /* @"string" - Objective C */ \
139 TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
141 TK(CPP_COMMENT, SPELL_STRING) /* Only if output comments. */ \
142 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
143 OP(CPP_EOF, "EOL") /* End of line or file. */
155 /* C language kind, used when calling cpp_reader_init. */
156 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
157 CLK_GNUCXX, CLK_CXX98, CLK_OBJC, CLK_OBJCXX, CLK_ASM};
159 /* Multiple-include optimisation. */
160 enum mi_state {MI_FAILED = 0, MI_OUTSIDE};
161 enum mi_ind {MI_IND_NONE = 0, MI_IND_NOT};
163 /* Payload of a NUMBER, FLOAT, STRING, or COMMENT token. */
167 const unsigned char *text;
170 /* Flags for the cpp_token structure. */
171 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
172 #define DIGRAPH (1 << 1) /* If it was a digraph. */
173 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
174 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
175 #define NAMED_OP (1 << 4) /* C++ named operators. */
176 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
178 /* A preprocessing token. This has been carefully packed and should
179 occupy 12 bytes on 32-bit hosts and 16 bytes on 64-bit hosts. */
182 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
183 unsigned char flags; /* flags - see above */
187 struct cpp_hashnode *node; /* An identifier. */
188 struct cpp_string str; /* A string, or number. */
189 unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
190 unsigned char c; /* Character represented by CPP_OTHER. */
194 /* The position of a token in the current file. */
198 unsigned int output_line;
202 typedef struct cpp_token_with_pos cpp_token_with_pos;
203 struct cpp_token_with_pos
209 /* Token lookahead. */
212 struct cpp_lookahead *next;
213 cpp_token_with_pos *tokens;
215 unsigned int cur, count, cap;
221 struct cpp_chunk *cur, *locked;
222 unsigned char *pos; /* Current position. */
227 typedef struct toklist toklist;
234 typedef struct cpp_context cpp_context;
237 /* Doubly-linked list. */
238 cpp_context *next, *prev;
240 /* Contexts other than the base context are contiguous tokens.
241 e.g. macro expansions, expanded argument tokens. */
244 /* For a macro context, these are the macro and its arguments. */
248 /* A standalone character. We may want to make it unsigned for the
249 same reason we use unsigned char - to avoid signedness issues. */
250 typedef int cppchar_t;
254 const unsigned char *cur; /* current position */
255 const unsigned char *rlimit; /* end of valid data */
256 const unsigned char *line_base; /* start of current line */
257 cppchar_t read_ahead; /* read ahead character */
258 cppchar_t extra_char; /* extra read-ahead for long tokens. */
260 struct cpp_reader *pfile; /* Owns this buffer. */
261 struct cpp_buffer *prev;
263 const unsigned char *buf; /* entire buffer */
265 /* Filename specified with #line command. */
266 const char *nominal_fname;
268 /* Actual directory of this file, used only for "" includes */
269 struct file_name_list *actual_dir;
271 /* Pointer into the include table. Used for include_next and
272 to record control macros. */
273 struct include_file *inc;
275 /* Value of if_stack at start of this file.
276 Used to prohibit unmatched #endif (etc) in an include file. */
277 struct if_stack *if_stack;
279 /* Token column position adjustment owing to tabs in whitespace. */
280 unsigned int col_adjust;
282 /* Line number at line_base (above). */
285 /* Because of the way the lexer works, -Wtrigraphs can sometimes
286 warn twice for the same trigraph. This helps prevent that. */
287 const unsigned char *last_Wtrigraphs;
289 /* True if we have already warned about C++ comments in this file.
290 The warning happens only for C89 extended mode with -pedantic on,
291 or for -Wtraditional, and only once per file (otherwise it would
292 be far too noisy). */
293 unsigned char warned_cplusplus_comments;
295 /* True if we don't process trigraphs and escaped newlines. True
296 for preprocessed input, command line directives, and _Pragma
298 unsigned char from_stage3;
300 /* Temporary storage for pfile->skipping whilst in a directive. */
301 unsigned char was_skipping;
304 /* Maximum nesting of cpp_buffers. We use a static limit, partly for
305 efficiency, and partly to limit runaway recursion. */
306 #define CPP_STACK_MAX 200
308 /* Values for opts.dump_macros.
309 dump_only means inhibit output of the preprocessed text
310 and instead output the definitions of all user-defined
311 macros in a form suitable for use as input to cpp.
312 dump_names means pass #define and the macro name through to output.
313 dump_definitions means pass the whole definition (plus #define) through
315 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
317 /* This structure is nested inside struct cpp_reader, and
318 carries all the options visible to the command line. */
321 /* Name of input and output files. */
322 const char *in_fname;
323 const char *out_fname;
325 /* Characters between tab stops. */
326 unsigned int tabstop;
328 /* Pending options - -D, -U, -A, -I, -ixxx. */
329 struct cpp_pending *pending;
331 /* File name which deps are being written to. This is 0 if deps are
332 being written to stdout. */
333 const char *deps_file;
335 /* Target-name to write with the dependency information. */
338 /* Search paths for include files. */
339 struct file_name_list *quote_include; /* First dir to search for "file" */
340 struct file_name_list *bracket_include;/* First dir to search for <file> */
342 /* Map between header names and file names, used only on DOS where
343 file names are limited in length. */
344 struct file_name_map_list *map_list;
346 /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
347 in the standard include file directories. */
348 const char *include_prefix;
349 unsigned int include_prefix_len;
351 /* -fleading_underscore sets this to "_". */
352 const char *user_label_prefix;
354 /* Non-0 means -v, so print the full set of include dirs. */
355 unsigned char verbose;
357 /* Nonzero means use extra default include directories for C++. */
358 unsigned char cplusplus;
360 /* Nonzero means handle cplusplus style comments */
361 unsigned char cplusplus_comments;
363 /* Nonzero means handle #import, for objective C. */
366 /* Nonzero means this is an assembly file, so ignore unrecognized
367 directives and the "# 33" form of #line, both of which are
368 probably comments. Also, permit unbalanced ' strings (again,
369 likely to be in comments). */
370 unsigned char lang_asm;
372 /* Nonzero means don't copy comments into the output file. */
373 unsigned char discard_comments;
375 /* Nonzero means process the ISO trigraph sequences. */
376 unsigned char trigraphs;
378 /* Nonzero means process the ISO digraph sequences. */
379 unsigned char digraphs;
381 /* Nonzero means print the names of included files rather than the
382 preprocessed output. 1 means just the #include "...", 2 means
383 #include <...> as well. */
384 unsigned char print_deps;
386 /* Nonzero if missing .h files in -M output are assumed to be
387 generated files and not errors. */
388 unsigned char print_deps_missing_files;
390 /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
391 unsigned char print_deps_append;
393 /* Nonzero means print names of header files (-H). */
394 unsigned char print_include_names;
396 /* Nonzero means cpp_pedwarn causes a hard error. */
397 unsigned char pedantic_errors;
399 /* Nonzero means don't print warning messages. */
400 unsigned char inhibit_warnings;
402 /* Nonzero means don't suppress warnings from system headers. */
403 unsigned char warn_system_headers;
405 /* Nonzero means don't print error messages. Has no option to
406 select it, but can be set by a user of cpplib (e.g. fix-header). */
407 unsigned char inhibit_errors;
409 /* Nonzero means warn if slash-star appears in a comment. */
410 unsigned char warn_comments;
412 /* Nonzero means warn if there are any trigraphs. */
413 unsigned char warn_trigraphs;
415 /* Nonzero means warn if #import is used. */
416 unsigned char warn_import;
418 /* Nonzero means warn about various incompatibilities with
420 unsigned char warn_traditional;
422 /* Nonzero means warn if ## is applied to two tokens that cannot be
424 unsigned char warn_paste;
426 /* Nonzero means turn warnings into errors. */
427 unsigned char warnings_are_errors;
429 /* Nonzero causes output not to be done, but directives such as
430 #define that have side effects are still obeyed. */
431 unsigned char no_output;
433 /* Nonzero means we should look for header.gcc files that remap file
437 /* Nonzero means don't output line number information. */
438 unsigned char no_line_commands;
440 /* Nonzero means -I- has been seen, so don't look for #include "foo"
441 the source-file directory. */
442 unsigned char ignore_srcdir;
444 /* Zero means dollar signs are punctuation. */
445 unsigned char dollars_in_ident;
447 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
448 unsigned char warn_undef;
450 /* Nonzero for the 1989 C Standard, including corrigenda and amendments. */
453 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
456 /* Nonzero means give all the error messages the ANSI standard requires. */
457 unsigned char pedantic;
459 /* Nonzero means we're looking at already preprocessed code, so don't
460 bother trying to do macro expansion and whatnot. */
461 unsigned char preprocessed;
463 /* Nonzero disables all the standard directories for headers. */
464 unsigned char no_standard_includes;
466 /* Nonzero disables the C++-specific standard directories for headers. */
467 unsigned char no_standard_cplusplus_includes;
469 /* Nonzero means dump macros in some fashion - see above. */
470 unsigned char dump_macros;
472 /* Nonzero means pass all #define and #undef directives which we
473 actually process through to the output stream. This feature is
474 used primarily to allow cc1 to record the #defines and #undefs
475 for the sake of debuggers which understand about preprocessor
476 macros, but it may also be useful with -E to figure out how
477 symbols are defined, and where they are defined. */
478 unsigned char debug_output;
480 /* Nonzero means pass #include lines through to the output. */
481 unsigned char dump_includes;
483 /* Print column number in error messages. */
484 unsigned char show_column;
489 /* Nonzero if first token on line is CPP_HASH. */
490 unsigned char in_directive;
492 /* Nonzero if in a directive that takes angle-bracketed headers. */
493 unsigned char angled_headers;
495 /* Nonzero to save comments. Turned off if discard_comments, and in
496 all directives apart from #define. */
497 unsigned char save_comments;
499 /* If nonzero the next token is at the beginning of the line. */
500 unsigned char next_bol;
502 /* Nonzero if we're mid-comment. */
503 unsigned char lexing_comment;
505 /* Nonzero if lexing __VA_ARGS__ is valid. */
506 unsigned char va_args_ok;
508 /* Nonzero if lexing poisoned identifiers is valid. */
509 unsigned char poisoned_ok;
511 /* Nonzero to prevent macro expansion. */
512 unsigned char prevent_expansion;
514 /* Nonzero when parsing arguments to a function-like macro. */
515 unsigned char parsing_args;
518 /* Special nodes - identifiers with predefined significance. */
521 cpp_hashnode *n_L; /* L"str" */
522 cpp_hashnode *n_defined; /* defined operator */
523 cpp_hashnode *n__Pragma; /* _Pragma operator */
524 cpp_hashnode *n__STRICT_ANSI__; /* STDC_0_IN_SYSTEM_HEADERS */
525 cpp_hashnode *n__CHAR_UNSIGNED__; /* plain char is unsigned */
526 cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */
529 /* A cpp_reader encapsulates the "state" of a pre-processor run.
530 Applying cpp_get_token repeatedly yields a stream of pre-processor
531 tokens. Usually, there is only one cpp_reader object active. */
535 /* Top of buffer stack. */
539 struct lexer_state state;
541 /* The position of the last lexed token, last lexed directive, and
542 last macro invocation. */
543 cpp_lexer_pos lexer_pos;
544 cpp_lexer_pos macro_pos;
545 cpp_lexer_pos directive_pos;
548 cpp_pool ident_pool; /* For all identifiers, and permanent
549 numbers and strings. */
550 cpp_pool temp_string_pool; /* For temporary numbers and strings. */
551 cpp_pool macro_pool; /* For macro definitions. Permanent. */
552 cpp_pool argument_pool; /* For macro arguments. Temporary. */
553 cpp_pool* string_pool; /* Either temp_string_pool or ident_pool. */
556 struct cpp_context base_context;
557 struct cpp_context *context;
559 /* If in_directive, the directive if known. */
560 const struct directive *directive;
562 /* Multiple inlcude optimisation. */
563 enum mi_state mi_state;
564 enum mi_ind mi_if_not_defined;
565 unsigned int mi_lexed;
566 const cpp_hashnode *mi_cmacro;
567 const cpp_hashnode *mi_ind_cmacro;
569 /* Token lookahead. */
570 struct cpp_lookahead *la_read; /* Read from this lookahead. */
571 struct cpp_lookahead *la_write; /* Write to this lookahead. */
572 struct cpp_lookahead *la_unused; /* Free store. */
573 struct cpp_lookahead *la_saved; /* Backup when entering directive. */
575 /* Error counter for exit code. */
578 /* Line and column where a newline was first seen in a string
579 constant (multi-line strings). */
580 cpp_lexer_pos mlstring_pos;
582 /* Buffer to hold macro definition string. */
583 unsigned char *macro_buffer;
584 unsigned int macro_buffer_len;
586 /* Current depth in #include directives that use <...>. */
587 unsigned int system_include_depth;
589 /* Current depth of buffer stack. */
590 unsigned int buffer_stack_depth;
592 /* Current depth in #include directives. */
593 unsigned int include_depth;
595 /* Hash table of macros and assertions. See cpphash.c. */
596 struct htab *hashtab;
598 /* Tree of other included files. See cppfiles.c. */
599 struct splay_tree_s *all_include_files;
601 /* Chain of `actual directory' file_name_list entries, for ""
603 struct file_name_list *actual_dirs;
605 /* Current maximum length of directory names in the search path
606 for include files. (Altered as we get more of them.) */
607 unsigned int max_include_len;
609 /* Date and time tokens. Calculated together if either is requested. */
613 /* Buffer of -M output. */
616 /* Obstack holding all macro hash nodes. This never shrinks.
618 struct obstack *hash_ob;
620 /* Obstack holding buffer and conditional structures. This is a
621 real stack. See cpplib.c */
622 struct obstack *buffer_ob;
624 /* Pragma table - dynamic, because a library user can add to the
625 list of recognized pragmas. */
626 struct pragma_entry *pragmas;
630 void (*enter_file) PARAMS ((cpp_reader *));
631 void (*leave_file) PARAMS ((cpp_reader *));
632 void (*rename_file) PARAMS ((cpp_reader *));
633 void (*include) PARAMS ((cpp_reader *, const unsigned char *,
635 void (*define) PARAMS ((cpp_reader *, cpp_hashnode *));
636 void (*undef) PARAMS ((cpp_reader *, cpp_hashnode *));
637 void (*poison) PARAMS ((cpp_reader *));
638 void (*ident) PARAMS ((cpp_reader *, const cpp_string *));
639 void (*def_pragma) PARAMS ((cpp_reader *));
642 /* User visible options. */
643 struct cpp_options opts;
645 /* Special nodes - identifiers with predefined significance to the
647 struct spec_nodes spec_nodes;
649 /* Nonzero means we have printed (while error reporting) a list of
650 containing files that matches the current status. */
651 unsigned char input_stack_listing_current;
653 /* We're printed a warning recommending against using #import. */
654 unsigned char import_warning;
656 /* True after cpp_start_read completes. Used to inhibit some
657 warnings while parsing the command line. */
658 unsigned char done_initializing;
660 /* True if we are skipping a failed conditional group. */
661 unsigned char skipping;
664 #define CPP_FATAL_LIMIT 1000
665 /* True if we have seen a "fatal" error. */
666 #define CPP_FATAL_ERRORS(READER) ((READER)->errors >= CPP_FATAL_LIMIT)
668 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
669 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
670 #define CPP_BUF_LINE(BUF) ((BUF)->lineno)
671 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base + (BUF)->col_adjust)
672 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
674 /* Name under which this program was invoked. */
675 extern const char *progname;
677 /* The structure of a node in the hash table. The hash table has
678 entries for all identifiers: either macros defined by #define
679 commands (type NT_MACRO), assertions created with #assert
680 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
681 like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
682 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
683 identifier that behaves like an operator such as "xor".
684 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
685 diagnostic may be required for this node. Currently this only
686 applies to __VA_ARGS__ and poisoned identifiers. */
688 /* Hash node flags. */
689 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
690 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
691 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
692 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
694 /* Different flavors of hash node. */
697 NT_VOID = 0, /* No definition yet. */
698 NT_MACRO, /* A macro of some form. */
699 NT_ASSERTION /* Predicate for #assert. */
702 /* Different flavors of builtin macro. */
705 BT_SPECLINE = 0, /* `__LINE__' */
706 BT_DATE, /* `__DATE__' */
707 BT_FILE, /* `__FILE__' */
708 BT_BASE_FILE, /* `__BASE_FILE__' */
709 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
710 BT_TIME, /* `__TIME__' */
711 BT_STDC /* `__STDC__' */
714 /* There is a slot in the hashnode for use by front ends when integrated
715 with cpplib. It holds a tree (see tree.h) but we mustn't drag that
716 header into every user of cpplib.h. cpplib does not do anything with
717 this slot except clear it when a new node is created. */
722 const unsigned char *name; /* Null-terminated name. */
723 unsigned int hash; /* Cached hash value. */
724 unsigned short length; /* Length of name excluding null. */
725 unsigned short arg_index; /* Macro argument index. */
726 unsigned char directive_index; /* Index into directive table. */
727 ENUM_BITFIELD(node_type) type : 8; /* Node type. */
728 unsigned char flags; /* Node flags. */
732 cpp_macro *macro; /* If a macro. */
733 struct answer *answers; /* Answers to an assertion. */
734 enum cpp_ttype operator; /* Code for a named operator. */
735 enum builtin_type builtin; /* Code for a builtin macro. */
738 union tree_node *fe_value; /* Front end value. */
741 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
742 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
744 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
746 extern void cpp_init PARAMS ((void));
747 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
748 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
749 extern void cpp_reader_init PARAMS ((cpp_reader *, enum c_lang));
751 extern void cpp_register_pragma PARAMS ((cpp_reader *,
752 const char *, const char *,
753 void (*) PARAMS ((cpp_reader *))));
754 extern void cpp_register_pragma_space PARAMS ((cpp_reader *, const char *));
756 extern int cpp_start_read PARAMS ((cpp_reader *, const char *));
757 extern void cpp_finish PARAMS ((cpp_reader *));
758 extern void cpp_cleanup PARAMS ((cpp_reader *));
759 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
761 extern enum cpp_ttype cpp_can_paste PARAMS ((cpp_reader *, const cpp_token *,
762 const cpp_token *, int *));
763 extern void cpp_get_token PARAMS ((cpp_reader *, cpp_token *));
764 extern const cpp_lexer_pos *cpp_get_line PARAMS ((cpp_reader *));
765 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
766 const cpp_hashnode *));
768 extern void cpp_define PARAMS ((cpp_reader *, const char *));
769 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
770 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
771 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
773 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
774 const unsigned char *, long));
775 extern cpp_buffer *cpp_pop_buffer PARAMS ((cpp_reader *));
776 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
778 /* N.B. The error-message-printer prototypes have not been nicely
779 formatted because exgettext needs to see 'msgid' on the same line
780 as the name of the function in order to work properly. Only the
781 string argument gets a name in an effort to keep the lines from
782 getting ridiculously oversized. */
784 extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
786 extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
788 extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
790 extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
792 extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
794 extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
796 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
798 extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
800 extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
802 extern void cpp_pedwarn_with_file_and_line PARAMS ((cpp_reader *, const char *, int, int, const char *msgid, ...))
804 extern void cpp_error_from_errno PARAMS ((cpp_reader *, const char *));
805 extern void cpp_notice_from_errno PARAMS ((cpp_reader *, const char *));
808 extern int cpp_ideq PARAMS ((const cpp_token *,
810 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
811 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
812 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
815 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
816 const unsigned char *, size_t));
817 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
818 int (*) PARAMS ((cpp_reader *,
824 extern void cpp_scan_buffer_nooutput PARAMS ((cpp_reader *));
825 extern void cpp_start_lookahead PARAMS ((cpp_reader *));
826 extern void cpp_stop_lookahead PARAMS ((cpp_reader *, int));
829 extern int cpp_included PARAMS ((cpp_reader *, const char *));
830 extern int cpp_read_file PARAMS ((cpp_reader *, const char *));
831 extern void cpp_make_system_header PARAMS ((cpp_reader *, cpp_buffer *, int));
832 extern const char *cpp_syshdr_flags PARAMS ((cpp_reader *, cpp_buffer *));
834 /* These are inline functions instead of macros so we can get type
836 typedef unsigned char U_CHAR;
837 #define U (const U_CHAR *) /* Intended use: U"string" */
839 static inline int ustrcmp PARAMS ((const U_CHAR *, const U_CHAR *));
840 static inline int ustrncmp PARAMS ((const U_CHAR *, const U_CHAR *,
842 static inline size_t ustrlen PARAMS ((const U_CHAR *));
843 static inline U_CHAR *uxstrdup PARAMS ((const U_CHAR *));
844 static inline U_CHAR *ustrchr PARAMS ((const U_CHAR *, int));
845 static inline int ufputs PARAMS ((const U_CHAR *, FILE *));
849 const U_CHAR *s1, *s2;
851 return strcmp ((const char *)s1, (const char *)s2);
856 const U_CHAR *s1, *s2;
859 return strncmp ((const char *)s1, (const char *)s2, n);
866 return strlen ((const char *)s1);
869 static inline U_CHAR *
873 return (U_CHAR *) xstrdup ((const char *)s1);
876 static inline U_CHAR *
881 return (U_CHAR *) strchr ((const char *)s1, c);
889 return fputs ((const char *)s, f);
895 #endif /* __GCC_CPPLIB__ */