1 /* Definitions for CPP library.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
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
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! */
26 #include <sys/types.h>
27 #include "hashtable.h"
34 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_macro cpp_macro;
41 typedef struct cpp_callbacks cpp_callbacks;
42 typedef struct cpp_dir cpp_dir;
46 /* The first three groups, apart from '=', can appear in preprocessor
47 expressions (+= and -= are used to indicate unary + and - resp.).
48 This allows a lookup table to be implemented in _cpp_parse_expr.
50 The first group, to CPP_LAST_EQ, can be immediately followed by an
51 '='. The lexer needs operators ending in '=', like ">>=", to be in
52 the same order as their counterparts without the '=', like ">>". */
54 /* Positions in the table. */
55 #define CPP_LAST_EQ CPP_MAX
56 #define CPP_FIRST_DIGRAPH CPP_HASH
57 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
58 #define CPP_LAST_CPP_OP CPP_LESS_EQ
63 OP(CPP_GREATER, ">") /* compare */ \
65 OP(CPP_PLUS, "+") /* math */ \
70 OP(CPP_AND, "&") /* bit ops */ \
73 OP(CPP_RSHIFT, ">>") \
74 OP(CPP_LSHIFT, "<<") \
75 OP(CPP_MIN, "<?") /* extension */ \
79 OP(CPP_AND_AND, "&&") /* logical */ \
83 OP(CPP_COMMA, ",") /* grouping */ \
84 OP(CPP_OPEN_PAREN, "(") \
85 OP(CPP_CLOSE_PAREN, ")") \
86 TK(CPP_EOF, SPELL_NONE) \
87 OP(CPP_EQ_EQ, "==") /* compare */ \
88 OP(CPP_NOT_EQ, "!=") \
89 OP(CPP_GREATER_EQ, ">=") \
90 OP(CPP_LESS_EQ, "<=") \
92 /* These two are unary + / - in preprocessor expressions. */ \
93 OP(CPP_PLUS_EQ, "+=") /* math */ \
94 OP(CPP_MINUS_EQ, "-=") \
96 OP(CPP_MULT_EQ, "*=") \
97 OP(CPP_DIV_EQ, "/=") \
98 OP(CPP_MOD_EQ, "%=") \
99 OP(CPP_AND_EQ, "&=") /* bit ops */ \
100 OP(CPP_OR_EQ, "|=") \
101 OP(CPP_XOR_EQ, "^=") \
102 OP(CPP_RSHIFT_EQ, ">>=") \
103 OP(CPP_LSHIFT_EQ, "<<=") \
104 OP(CPP_MIN_EQ, "<?=") /* extension */ \
105 OP(CPP_MAX_EQ, ">?=") \
106 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
107 OP(CPP_HASH, "#") /* digraphs */ \
108 OP(CPP_PASTE, "##") \
109 OP(CPP_OPEN_SQUARE, "[") \
110 OP(CPP_CLOSE_SQUARE, "]") \
111 OP(CPP_OPEN_BRACE, "{") \
112 OP(CPP_CLOSE_BRACE, "}") \
113 /* The remainder of the punctuation. Order is not significant. */ \
114 OP(CPP_SEMICOLON, ";") /* structure */ \
115 OP(CPP_ELLIPSIS, "...") \
116 OP(CPP_PLUS_PLUS, "++") /* increment */ \
117 OP(CPP_MINUS_MINUS, "--") \
118 OP(CPP_DEREF, "->") /* accessors */ \
120 OP(CPP_SCOPE, "::") \
121 OP(CPP_DEREF_STAR, "->*") \
122 OP(CPP_DOT_STAR, ".*") \
123 OP(CPP_ATSIGN, "@") /* used in Objective-C */ \
125 TK(CPP_NAME, SPELL_IDENT) /* word */ \
126 TK(CPP_AT_NAME, SPELL_IDENT) /* @word - Objective-C */ \
127 TK(CPP_NUMBER, SPELL_LITERAL) /* 34_be+ta */ \
129 TK(CPP_CHAR, SPELL_LITERAL) /* 'char' */ \
130 TK(CPP_WCHAR, SPELL_LITERAL) /* L'char' */ \
131 TK(CPP_OTHER, SPELL_LITERAL) /* stray punctuation */ \
133 TK(CPP_STRING, SPELL_LITERAL) /* "string" */ \
134 TK(CPP_WSTRING, SPELL_LITERAL) /* L"string" */ \
135 TK(CPP_OBJC_STRING, SPELL_LITERAL) /* @"string" - Objective-C */ \
136 TK(CPP_HEADER_NAME, SPELL_LITERAL) /* <stdio.h> in #include */ \
138 TK(CPP_COMMENT, SPELL_LITERAL) /* Only if output comments. */ \
139 /* SPELL_LITERAL happens to DTRT. */ \
140 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
141 TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */
153 /* C language kind, used when calling cpp_reader_init. */
154 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
155 CLK_GNUCXX, CLK_CXX98, CLK_ASM};
157 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
161 const unsigned char *text;
164 /* Flags for the cpp_token structure. */
165 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
166 #define DIGRAPH (1 << 1) /* If it was a digraph. */
167 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
168 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
169 #define NAMED_OP (1 << 4) /* C++ named operators. */
170 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
171 #define BOL (1 << 6) /* Token at beginning of line. */
173 /* A preprocessing token. This has been carefully packed and should
174 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
177 unsigned int line; /* Logical line of first char of token. */
178 unsigned short col; /* Column of first char of token. */
179 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
180 unsigned char flags; /* flags - see above */
184 cpp_hashnode *node; /* An identifier. */
185 const cpp_token *source; /* Inherit padding from this token. */
186 struct cpp_string str; /* A string, or number. */
187 unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
191 /* A type wide enough to hold any multibyte source character.
192 cpplib's character constant interpreter requires an unsigned type.
193 Also, a typedef for the signed equivalent.
194 The width of this type is capped at 32 bits; there do exist targets
195 where wchar_t is 64 bits, but only in a non-default mode, and there
196 would be no meaningful interpretation for a wchar_t value greater
197 than 2^32 anyway -- the widest wide-character encoding around is
198 ISO 10646, which stops at 2^31. */
199 #if CHAR_BIT * SIZEOF_INT >= 32
200 # define CPPCHAR_SIGNED_T int
201 #elif CHAR_BIT * SIZEOF_LONG >= 32
202 # define CPPCHAR_SIGNED_T long
204 # error "Cannot find a least-32-bit signed integer type"
206 typedef unsigned CPPCHAR_SIGNED_T cppchar_t;
207 typedef CPPCHAR_SIGNED_T cppchar_signed_t;
209 /* This structure is nested inside struct cpp_reader, and
210 carries all the options visible to the command line. */
213 /* Characters between tab stops. */
214 unsigned int tabstop;
216 /* The language we're preprocessing. */
219 /* Nonzero means use extra default include directories for C++. */
220 unsigned char cplusplus;
222 /* Nonzero means handle cplusplus style comments */
223 unsigned char cplusplus_comments;
225 /* Nonzero means define __OBJC__, treat @ as a special token, and
226 use the OBJC[PLUS]_INCLUDE_PATH environment variable. */
229 /* Nonzero means don't copy comments into the output file. */
230 unsigned char discard_comments;
232 /* Nonzero means don't copy comments into the output file during
234 unsigned char discard_comments_in_macro_exp;
236 /* Nonzero means process the ISO trigraph sequences. */
237 unsigned char trigraphs;
239 /* Nonzero means process the ISO digraph sequences. */
240 unsigned char digraphs;
242 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
243 unsigned char extended_numbers;
245 /* Nonzero means print names of header files (-H). */
246 unsigned char print_include_names;
248 /* Nonzero means cpp_pedwarn causes a hard error. */
249 unsigned char pedantic_errors;
251 /* Nonzero means don't print warning messages. */
252 unsigned char inhibit_warnings;
254 /* Nonzero means complain about deprecated features. */
255 unsigned char warn_deprecated;
257 /* Nonzero means don't suppress warnings from system headers. */
258 unsigned char warn_system_headers;
260 /* Nonzero means don't print error messages. Has no option to
261 select it, but can be set by a user of cpplib (e.g. fix-header). */
262 unsigned char inhibit_errors;
264 /* Nonzero means warn if slash-star appears in a comment. */
265 unsigned char warn_comments;
267 /* Nonzero means warn if there are any trigraphs. */
268 unsigned char warn_trigraphs;
270 /* Nonzero means warn about multicharacter charconsts. */
271 unsigned char warn_multichar;
273 /* Nonzero means warn about various incompatibilities with
275 unsigned char warn_traditional;
277 /* Nonzero means warn about long long numeric constants. */
278 unsigned char warn_long_long;
280 /* Nonzero means warn about text after an #endif (or #else). */
281 unsigned char warn_endif_labels;
283 /* Nonzero means warn about implicit sign changes owing to integer
285 unsigned char warn_num_sign_change;
287 /* Nonzero means turn warnings into errors. */
288 unsigned char warnings_are_errors;
290 /* Nonzero means we should look for header.gcc files that remap file
294 /* Zero means dollar signs are punctuation. */
295 unsigned char dollars_in_ident;
297 /* True if we should warn about dollars in identifiers or numbers
298 for this translation unit. */
299 unsigned char warn_dollars;
301 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
302 unsigned char warn_undef;
304 /* Nonzero means warn of unused macros from the main file. */
305 unsigned char warn_unused_macros;
307 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
310 /* Nonzero if we are conforming to a specific C or C++ standard. */
313 /* Nonzero means give all the error messages the ANSI standard requires. */
314 unsigned char pedantic;
316 /* Nonzero means we're looking at already preprocessed code, so don't
317 bother trying to do macro expansion and whatnot. */
318 unsigned char preprocessed;
320 /* Print column number in error messages. */
321 unsigned char show_column;
323 /* Nonzero means handle C++ alternate operator names. */
324 unsigned char operator_names;
326 /* True for traditional preprocessing. */
327 unsigned char traditional;
329 /* Holds the name of the target (execution) character set. */
330 const char *narrow_charset;
332 /* Holds the name of the target wide character set. */
333 const char *wide_charset;
335 /* True to warn about precompiled header files we couldn't use. */
336 bool warn_invalid_pch;
338 /* True if dependencies should be restored from a precompiled header. */
339 bool restore_pch_deps;
341 /* Dependency generation. */
344 /* Style of header dependencies to generate. */
345 enum {DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM } style;
347 /* Assume missing files are generated files. */
350 /* Generate phony targets for each dependency apart from the first
354 /* If true, no dependency is generated on the main file. */
355 bool ignore_main_file;
358 /* Target-specific features set by the front end or client. */
360 /* Precision for target CPP arithmetic, target characters, target
361 ints and target wide characters, respectively. */
362 size_t precision, char_precision, int_precision, wchar_precision;
364 /* True means chars (wide chars) are unsigned. */
365 bool unsigned_char, unsigned_wchar;
367 /* True if the most significant byte in a word has the lowest
368 address in memory. */
369 bool bytes_big_endian;
371 /* Nonzero means __STDC__ should have the value 0 in system headers. */
372 unsigned char stdc_0_in_system_headers;
375 /* Call backs to cpplib client. */
378 /* Called when a new line of preprocessed output is started. */
379 void (*line_change) (cpp_reader *, const cpp_token *, int);
380 void (*file_change) (cpp_reader *, const struct line_map *);
381 void (*include) (cpp_reader *, unsigned int, const unsigned char *,
383 void (*define) (cpp_reader *, unsigned int, cpp_hashnode *);
384 void (*undef) (cpp_reader *, unsigned int, cpp_hashnode *);
385 void (*ident) (cpp_reader *, unsigned int, const cpp_string *);
386 void (*def_pragma) (cpp_reader *, unsigned int);
387 int (*valid_pch) (cpp_reader *, const char *, int);
388 void (*read_pch) (cpp_reader *, const char *, int, const char *);
391 /* Chain of directories to look for include files in. */
394 /* NULL-terminated singly-linked list. */
395 struct cpp_dir *next;
397 /* NAME of the directory, NUL-terminated. */
401 /* One if a system header, two if a system header that has extern
402 "C" guards for C++. */
405 /* Mapping of file names for this directory for MS-DOS and related
406 platforms. A NULL-terminated array of (from, to) pairs. */
407 const char **name_map;
409 /* The C front end uses these to recognize duplicated
410 directories in the search path. */
415 /* Name under which this program was invoked. */
416 extern const char *progname;
418 /* The structure of a node in the hash table. The hash table has
419 entries for all identifiers: either macros defined by #define
420 commands (type NT_MACRO), assertions created with #assert
421 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
422 like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are
423 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
424 identifier that behaves like an operator such as "xor".
425 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
426 diagnostic may be required for this node. Currently this only
427 applies to __VA_ARGS__ and poisoned identifiers. */
429 /* Hash node flags. */
430 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
431 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
432 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
433 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
434 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
435 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
436 #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */
438 /* Different flavors of hash node. */
441 NT_VOID = 0, /* No definition yet. */
442 NT_MACRO, /* A macro of some form. */
443 NT_ASSERTION /* Predicate for #assert. */
446 /* Different flavors of builtin macro. _Pragma is an operator, but we
447 handle it with the builtin code for efficiency reasons. */
450 BT_SPECLINE = 0, /* `__LINE__' */
451 BT_DATE, /* `__DATE__' */
452 BT_FILE, /* `__FILE__' */
453 BT_BASE_FILE, /* `__BASE_FILE__' */
454 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
455 BT_TIME, /* `__TIME__' */
456 BT_STDC, /* `__STDC__' */
457 BT_PRAGMA /* `_Pragma' operator */
460 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
461 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
462 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
463 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
465 /* The common part of an identifier node shared amongst all 3 C front
466 ends. Also used to store CPP identifiers, which are a superset of
467 identifiers in the grammatical sense. */
468 struct cpp_hashnode GTY(())
470 struct ht_identifier ident;
471 unsigned int is_directive : 1;
472 unsigned int directive_index : 7; /* If is_directive,
473 then index into directive table.
474 Otherwise, a NODE_OPERATOR. */
475 unsigned char rid_code; /* Rid code - for front ends. */
476 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
477 unsigned char flags; /* CPP flags. */
479 union _cpp_hashnode_value
482 cpp_macro * GTY((skip (""))) macro;
483 /* Answers to an assertion. */
484 struct answer * GTY ((skip (""))) answers;
485 /* Code for a builtin macro. */
486 enum builtin_type GTY ((tag ("1"))) builtin;
487 /* Macro argument index. */
488 unsigned short GTY ((tag ("0"))) arg_index;
489 } GTY ((desc ("0"))) value;
492 /* Call this first to get a handle to pass to other functions.
494 If you want cpplib to manage its own hashtable, pass in a NULL
495 pointer. Otherwise you should pass in an initialized hash table
496 that cpplib will share; this technique is used by the C front
498 extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *);
500 /* Call this to change the selected language standard (e.g. because of
501 command line options). */
502 extern void cpp_set_lang (cpp_reader *, enum c_lang);
504 /* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
505 called any number of times before cpp_read_main_file(). If no
506 targets have been added before cpp_read_main_file(), then the
507 default target is used. */
508 extern void cpp_add_dependency_target (cpp_reader *, const char *, int);
510 /* Set the include paths. */
511 extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
513 /* Call these to get pointers to the options and callback structures
514 for a given reader. These pointers are good until you call
515 cpp_finish on that reader. You can either edit the callbacks
516 through the pointer returned from cpp_get_callbacks, or set them
517 with cpp_set_callbacks. */
518 extern cpp_options *cpp_get_options (cpp_reader *);
519 extern const struct line_maps *cpp_get_line_maps (cpp_reader *);
520 extern cpp_callbacks *cpp_get_callbacks (cpp_reader *);
521 extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *);
523 /* This function reads the file, but does not start preprocessing. It
524 returns the name of the original file; this is the same as the
525 input file, except for preprocessed input. This will generate at
526 least one file change callback, and possibly a line change callback
527 too. If there was an error opening the file, it returns NULL. */
528 extern const char *cpp_read_main_file (cpp_reader *, const char *);
530 /* Stacks a new file. It will return false if there was an error
532 extern bool cpp_stack_file (cpp_reader *, const char *);
534 /* Set up built-ins like __FILE__. */
535 extern void cpp_init_builtins (cpp_reader *, int);
537 /* Set up translation to the target character set. */
538 extern void cpp_init_iconv (cpp_reader *);
540 /* Call this to finish preprocessing. If you requested dependency
541 generation, pass an open stream to write the information to,
542 otherwise NULL. It is your responsibility to close the stream.
544 Returns cpp_errors (pfile). */
545 extern int cpp_finish (cpp_reader *, FILE *deps_stream);
547 /* Call this to release the handle at the end of preprocessing. Any
548 use of the handle after this function returns is invalid. Returns
549 cpp_errors (pfile). */
550 extern void cpp_destroy (cpp_reader *);
553 extern unsigned int cpp_errors (cpp_reader *);
555 extern unsigned int cpp_token_len (const cpp_token *);
556 extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *);
557 extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *,
559 extern void cpp_register_pragma (cpp_reader *, const char *, const char *,
560 void (*) (cpp_reader *));
561 extern int cpp_avoid_paste (cpp_reader *, const cpp_token *,
563 extern const cpp_token *cpp_get_token (cpp_reader *);
564 extern const unsigned char *cpp_macro_definition (cpp_reader *,
565 const cpp_hashnode *);
566 extern void _cpp_backup_tokens (cpp_reader *, unsigned int);
568 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
569 extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *,
570 unsigned int *, int *);
571 /* Evaluate a vector of CPP_STRING or CPP_WSTRING tokens. */
572 extern bool cpp_interpret_string (cpp_reader *,
573 const cpp_string *, size_t,
576 /* Used to register macros and assertions, perhaps from the command line.
577 The text is the same as the command line argument. */
578 extern void cpp_define (cpp_reader *, const char *);
579 extern void cpp_assert (cpp_reader *, const char *);
580 extern void cpp_undef (cpp_reader *, const char *);
581 extern void cpp_unassert (cpp_reader *, const char *);
583 /* Undefine all macros and assertions. */
584 extern void cpp_undef_all (cpp_reader *);
586 extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *,
588 extern int cpp_defined (cpp_reader *, const unsigned char *, int);
590 /* A preprocessing number. Code assumes that any unused high bits of
591 the double integer are set to zero. */
592 typedef unsigned HOST_WIDE_INT cpp_num_part;
593 typedef struct cpp_num cpp_num;
598 bool unsignedp; /* True if value should be treated as unsigned. */
599 bool overflow; /* True if the most recent calculation overflowed. */
602 /* cpplib provides two interfaces for interpretation of preprocessing
605 cpp_classify_number categorizes numeric constants according to
606 their field (integer, floating point, or invalid), radix (decimal,
607 octal, hexadecimal), and type suffixes. */
609 #define CPP_N_CATEGORY 0x000F
610 #define CPP_N_INVALID 0x0000
611 #define CPP_N_INTEGER 0x0001
612 #define CPP_N_FLOATING 0x0002
614 #define CPP_N_WIDTH 0x00F0
615 #define CPP_N_SMALL 0x0010 /* int, float. */
616 #define CPP_N_MEDIUM 0x0020 /* long, double. */
617 #define CPP_N_LARGE 0x0040 /* long long, long double. */
619 #define CPP_N_RADIX 0x0F00
620 #define CPP_N_DECIMAL 0x0100
621 #define CPP_N_HEX 0x0200
622 #define CPP_N_OCTAL 0x0400
624 #define CPP_N_UNSIGNED 0x1000 /* Properties. */
625 #define CPP_N_IMAGINARY 0x2000
627 /* Classify a CPP_NUMBER token. The return value is a combination of
628 the flags from the above sets. */
629 extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *);
631 /* Evaluate a token classified as category CPP_N_INTEGER. */
632 extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *,
635 /* Sign extend a number, with PRECISION significant bits and all
636 others assumed clear, to fill out a cpp_num structure. */
637 cpp_num cpp_num_sign_extend (cpp_num, size_t);
639 /* Diagnostic levels. To get a diagnostic without associating a
640 position in the translation unit with it, use cpp_error_with_line
641 with a line number of zero. */
643 /* Warning, an error with -Werror. */
644 #define DL_WARNING 0x00
645 /* Same as DL_WARNING, except it is not suppressed in system headers. */
646 #define DL_WARNING_SYSHDR 0x01
647 /* Warning, an error with -pedantic-errors or -Werror. */
648 #define DL_PEDWARN 0x02
650 #define DL_ERROR 0x03
651 /* An internal consistency check failed. Prints "internal error: ",
652 otherwise the same as DL_ERROR. */
654 /* Extracts a diagnostic level from an int. */
655 #define DL_EXTRACT(l) (l & 0xf)
656 /* Nonzero if a diagnostic level is one of the warnings. */
657 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
658 && DL_EXTRACT (l) <= DL_PEDWARN)
660 /* N.B. The error-message-printer prototypes have not been nicely
661 formatted because exgettext needs to see 'msgid' on the same line
662 as the name of the function in order to work properly. Only the
663 string argument gets a name in an effort to keep the lines from
664 getting ridiculously oversized. */
666 /* Output a diagnostic of some kind. */
667 extern void cpp_error (cpp_reader *, int, const char *msgid, ...)
670 /* Output a diagnostic with "MSGID: " preceding the
671 error string of errno. No location is printed. */
672 extern void cpp_errno (cpp_reader *, int, const char *msgid);
674 /* Same as cpp_error, except additionally specifies a position as a
675 (translation unit) physical line and physical column. If the line is
676 zero, then no location is printed. */
677 extern void cpp_error_with_line (cpp_reader *, int, unsigned, unsigned, const char *msgid, ...)
681 extern int cpp_ideq (const cpp_token *, const char *);
682 extern void cpp_output_line (cpp_reader *, FILE *);
683 extern void cpp_output_token (const cpp_token *, FILE *);
684 extern const char *cpp_type2name (enum cpp_ttype);
685 /* Returns the value of an escape sequence, truncated to the correct
686 target precision. PSTR points to the input pointer, which is just
687 after the backslash. LIMIT is how much text we have. WIDE is true
688 if the escape sequence is part of a wide character constant or
689 string literal. Handles all relevant diagnostics. */
690 extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr,
691 const unsigned char *limit, int wide);
695 /* Lookup an identifier in the hashtable. Puts the identifier in the
696 table if it is not already there. */
697 extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *,
700 typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *);
701 extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *);
704 extern void cpp_scan_nooutput (cpp_reader *);
705 extern int cpp_sys_macro_p (cpp_reader *);
706 extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *,
710 extern bool cpp_included (cpp_reader *, const char *);
711 extern void cpp_make_system_header (cpp_reader *, int, int);
712 extern bool cpp_push_include (cpp_reader *, const char *);
713 extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *);
716 struct save_macro_data;
717 extern int cpp_save_state (cpp_reader *, FILE *);
718 extern int cpp_write_pch_deps (cpp_reader *, FILE *);
719 extern int cpp_write_pch_state (cpp_reader *, FILE *);
720 extern int cpp_valid_state (cpp_reader *, const char *, int);
721 extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **);
722 extern int cpp_read_state (cpp_reader *, const char *, FILE *,
723 struct save_macro_data *);
729 #endif /* ! GCC_CPPLIB_H */