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 if #import is used. */
271 unsigned char warn_import;
273 /* Nonzero means warn about multicharacter charconsts. */
274 unsigned char warn_multichar;
276 /* Nonzero means warn about various incompatibilities with
278 unsigned char warn_traditional;
280 /* Nonzero means warn about long long numeric constants. */
281 unsigned char warn_long_long;
283 /* Nonzero means warn about text after an #endif (or #else). */
284 unsigned char warn_endif_labels;
286 /* Nonzero means warn about implicit sign changes owing to integer
288 unsigned char warn_num_sign_change;
290 /* Nonzero means turn warnings into errors. */
291 unsigned char warnings_are_errors;
293 /* Nonzero means we should look for header.gcc files that remap file
297 /* Zero means dollar signs are punctuation. */
298 unsigned char dollars_in_ident;
300 /* True if we should warn about dollars in identifiers or numbers
301 for this translation unit. */
302 unsigned char warn_dollars;
304 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
305 unsigned char warn_undef;
307 /* Nonzero means warn of unused macros from the main file. */
308 unsigned char warn_unused_macros;
310 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
313 /* Nonzero if we are conforming to a specific C or C++ standard. */
316 /* Nonzero means give all the error messages the ANSI standard requires. */
317 unsigned char pedantic;
319 /* Nonzero means we're looking at already preprocessed code, so don't
320 bother trying to do macro expansion and whatnot. */
321 unsigned char preprocessed;
323 /* Print column number in error messages. */
324 unsigned char show_column;
326 /* Nonzero means handle C++ alternate operator names. */
327 unsigned char operator_names;
329 /* True for traditional preprocessing. */
330 unsigned char traditional;
332 /* Holds the name of the target (execution) character set. */
333 const char *narrow_charset;
335 /* Holds the name of the target wide character set. */
336 const char *wide_charset;
338 /* True to warn about precompiled header files we couldn't use. */
339 bool warn_invalid_pch;
341 /* True if dependencies should be restored from a precompiled header. */
342 bool restore_pch_deps;
344 /* Dependency generation. */
347 /* Style of header dependencies to generate. */
348 enum {DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM } style;
350 /* Assume missing files are generated files. */
353 /* Generate phony targets for each dependency apart from the first
357 /* If true, no dependency is generated on the main file. */
358 bool ignore_main_file;
361 /* Target-specific features set by the front end or client. */
363 /* Precision for target CPP arithmetic, target characters, target
364 ints and target wide characters, respectively. */
365 size_t precision, char_precision, int_precision, wchar_precision;
367 /* True means chars (wide chars) are unsigned. */
368 bool unsigned_char, unsigned_wchar;
370 /* True if the most significant byte in a word has the lowest
371 address in memory. */
372 bool bytes_big_endian;
374 /* Nonzero means __STDC__ should have the value 0 in system headers. */
375 unsigned char stdc_0_in_system_headers;
378 /* Call backs to cpplib client. */
381 /* Called when a new line of preprocessed output is started. */
382 void (*line_change) (cpp_reader *, const cpp_token *, int);
383 void (*file_change) (cpp_reader *, const struct line_map *);
384 void (*include) (cpp_reader *, unsigned int, const unsigned char *,
386 void (*define) (cpp_reader *, unsigned int, cpp_hashnode *);
387 void (*undef) (cpp_reader *, unsigned int, cpp_hashnode *);
388 void (*ident) (cpp_reader *, unsigned int, const cpp_string *);
389 void (*def_pragma) (cpp_reader *, unsigned int);
390 int (*valid_pch) (cpp_reader *, const char *, int);
391 void (*read_pch) (cpp_reader *, const char *, int, const char *);
394 /* Chain of directories to look for include files in. */
397 /* NULL-terminated singly-linked list. */
398 struct cpp_dir *next;
400 /* NAME of the directory, NUL-terminated. */
404 /* One if a system header, two if a system header that has extern
405 "C" guards for C++. */
408 /* Mapping of file names for this directory for MS-DOS and related
409 platforms. A NULL-terminated array of (from, to) pairs. */
410 const char **name_map;
412 /* The C front end uses these to recognize duplicated
413 directories in the search path. */
418 /* Name under which this program was invoked. */
419 extern const char *progname;
421 /* The structure of a node in the hash table. The hash table has
422 entries for all identifiers: either macros defined by #define
423 commands (type NT_MACRO), assertions created with #assert
424 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
425 like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are
426 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
427 identifier that behaves like an operator such as "xor".
428 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
429 diagnostic may be required for this node. Currently this only
430 applies to __VA_ARGS__ and poisoned identifiers. */
432 /* Hash node flags. */
433 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
434 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
435 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
436 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
437 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
438 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
439 #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */
441 /* Different flavors of hash node. */
444 NT_VOID = 0, /* No definition yet. */
445 NT_MACRO, /* A macro of some form. */
446 NT_ASSERTION /* Predicate for #assert. */
449 /* Different flavors of builtin macro. _Pragma is an operator, but we
450 handle it with the builtin code for efficiency reasons. */
453 BT_SPECLINE = 0, /* `__LINE__' */
454 BT_DATE, /* `__DATE__' */
455 BT_FILE, /* `__FILE__' */
456 BT_BASE_FILE, /* `__BASE_FILE__' */
457 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
458 BT_TIME, /* `__TIME__' */
459 BT_STDC, /* `__STDC__' */
460 BT_PRAGMA /* `_Pragma' operator */
463 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
464 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
465 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
466 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
468 /* The common part of an identifier node shared amongst all 3 C front
469 ends. Also used to store CPP identifiers, which are a superset of
470 identifiers in the grammatical sense. */
471 struct cpp_hashnode GTY(())
473 struct ht_identifier ident;
474 unsigned int is_directive : 1;
475 unsigned int directive_index : 7; /* If is_directive,
476 then index into directive table.
477 Otherwise, a NODE_OPERATOR. */
478 unsigned char rid_code; /* Rid code - for front ends. */
479 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
480 unsigned char flags; /* CPP flags. */
482 union _cpp_hashnode_value
485 cpp_macro * GTY((skip (""))) macro;
486 /* Answers to an assertion. */
487 struct answer * GTY ((skip (""))) answers;
488 /* Code for a builtin macro. */
489 enum builtin_type GTY ((tag ("1"))) builtin;
490 /* Macro argument index. */
491 unsigned short GTY ((tag ("0"))) arg_index;
492 } GTY ((desc ("0"))) value;
495 /* Call this first to get a handle to pass to other functions.
497 If you want cpplib to manage its own hashtable, pass in a NULL
498 pointer. Otherwise you should pass in an initialized hash table
499 that cpplib will share; this technique is used by the C front
501 extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *);
503 /* Call this to change the selected language standard (e.g. because of
504 command line options). */
505 extern void cpp_set_lang (cpp_reader *, enum c_lang);
507 /* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
508 called any number of times before cpp_read_main_file(). If no
509 targets have been added before cpp_read_main_file(), then the
510 default target is used. */
511 extern void cpp_add_dependency_target (cpp_reader *, const char *, int);
513 /* Set the include paths. */
514 extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
516 /* Call these to get pointers to the options and callback structures
517 for a given reader. These pointers are good until you call
518 cpp_finish on that reader. You can either edit the callbacks
519 through the pointer returned from cpp_get_callbacks, or set them
520 with cpp_set_callbacks. */
521 extern cpp_options *cpp_get_options (cpp_reader *);
522 extern const struct line_maps *cpp_get_line_maps (cpp_reader *);
523 extern cpp_callbacks *cpp_get_callbacks (cpp_reader *);
524 extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *);
526 /* This function reads the file, but does not start preprocessing. It
527 returns the name of the original file; this is the same as the
528 input file, except for preprocessed input. This will generate at
529 least one file change callback, and possibly a line change callback
530 too. If there was an error opening the file, it returns NULL. */
531 extern const char *cpp_read_main_file (cpp_reader *, const char *);
533 /* Stacks a new file. It will return false if there was an error
535 extern bool cpp_stack_file (cpp_reader *, const char *);
537 /* Set up built-ins like __FILE__. */
538 extern void cpp_init_builtins (cpp_reader *, int);
540 /* Set up translation to the target character set. */
541 extern void cpp_init_iconv (cpp_reader *);
543 /* Call this to finish preprocessing. If you requested dependency
544 generation, pass an open stream to write the information to,
545 otherwise NULL. It is your responsibility to close the stream.
547 Returns cpp_errors (pfile). */
548 extern int cpp_finish (cpp_reader *, FILE *deps_stream);
550 /* Call this to release the handle at the end of preprocessing. Any
551 use of the handle after this function returns is invalid. Returns
552 cpp_errors (pfile). */
553 extern void cpp_destroy (cpp_reader *);
556 extern unsigned int cpp_errors (cpp_reader *);
558 extern unsigned int cpp_token_len (const cpp_token *);
559 extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *);
560 extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *,
562 extern void cpp_register_pragma (cpp_reader *, const char *, const char *,
563 void (*) (cpp_reader *));
564 extern int cpp_avoid_paste (cpp_reader *, const cpp_token *,
566 extern const cpp_token *cpp_get_token (cpp_reader *);
567 extern const unsigned char *cpp_macro_definition (cpp_reader *,
568 const cpp_hashnode *);
569 extern void _cpp_backup_tokens (cpp_reader *, unsigned int);
571 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
572 extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *,
573 unsigned int *, int *);
574 /* Evaluate a vector of CPP_STRING or CPP_WSTRING tokens. */
575 extern bool cpp_interpret_string (cpp_reader *,
576 const cpp_string *, size_t,
579 /* Used to register macros and assertions, perhaps from the command line.
580 The text is the same as the command line argument. */
581 extern void cpp_define (cpp_reader *, const char *);
582 extern void cpp_assert (cpp_reader *, const char *);
583 extern void cpp_undef (cpp_reader *, const char *);
584 extern void cpp_unassert (cpp_reader *, const char *);
586 /* Undefine all macros and assertions. */
587 extern void cpp_undef_all (cpp_reader *);
589 extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *,
591 extern int cpp_defined (cpp_reader *, const unsigned char *, int);
593 /* A preprocessing number. Code assumes that any unused high bits of
594 the double integer are set to zero. */
595 typedef unsigned HOST_WIDE_INT cpp_num_part;
596 typedef struct cpp_num cpp_num;
601 bool unsignedp; /* True if value should be treated as unsigned. */
602 bool overflow; /* True if the most recent calculation overflowed. */
605 /* cpplib provides two interfaces for interpretation of preprocessing
608 cpp_classify_number categorizes numeric constants according to
609 their field (integer, floating point, or invalid), radix (decimal,
610 octal, hexadecimal), and type suffixes. */
612 #define CPP_N_CATEGORY 0x000F
613 #define CPP_N_INVALID 0x0000
614 #define CPP_N_INTEGER 0x0001
615 #define CPP_N_FLOATING 0x0002
617 #define CPP_N_WIDTH 0x00F0
618 #define CPP_N_SMALL 0x0010 /* int, float. */
619 #define CPP_N_MEDIUM 0x0020 /* long, double. */
620 #define CPP_N_LARGE 0x0040 /* long long, long double. */
622 #define CPP_N_RADIX 0x0F00
623 #define CPP_N_DECIMAL 0x0100
624 #define CPP_N_HEX 0x0200
625 #define CPP_N_OCTAL 0x0400
627 #define CPP_N_UNSIGNED 0x1000 /* Properties. */
628 #define CPP_N_IMAGINARY 0x2000
630 /* Classify a CPP_NUMBER token. The return value is a combination of
631 the flags from the above sets. */
632 extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *);
634 /* Evaluate a token classified as category CPP_N_INTEGER. */
635 extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *,
638 /* Sign extend a number, with PRECISION significant bits and all
639 others assumed clear, to fill out a cpp_num structure. */
640 cpp_num cpp_num_sign_extend (cpp_num, size_t);
642 /* Diagnostic levels. To get a diagnostic without associating a
643 position in the translation unit with it, use cpp_error_with_line
644 with a line number of zero. */
646 /* Warning, an error with -Werror. */
647 #define DL_WARNING 0x00
648 /* Same as DL_WARNING, except it is not suppressed in system headers. */
649 #define DL_WARNING_SYSHDR 0x01
650 /* Warning, an error with -pedantic-errors or -Werror. */
651 #define DL_PEDWARN 0x02
653 #define DL_ERROR 0x03
654 /* An internal consistency check failed. Prints "internal error: ",
655 otherwise the same as DL_ERROR. */
657 /* Extracts a diagnostic level from an int. */
658 #define DL_EXTRACT(l) (l & 0xf)
659 /* Nonzero if a diagnostic level is one of the warnings. */
660 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
661 && DL_EXTRACT (l) <= DL_PEDWARN)
663 /* N.B. The error-message-printer prototypes have not been nicely
664 formatted because exgettext needs to see 'msgid' on the same line
665 as the name of the function in order to work properly. Only the
666 string argument gets a name in an effort to keep the lines from
667 getting ridiculously oversized. */
669 /* Output a diagnostic of some kind. */
670 extern void cpp_error (cpp_reader *, int, const char *msgid, ...)
673 /* Output a diagnostic with "MSGID: " preceding the
674 error string of errno. No location is printed. */
675 extern void cpp_errno (cpp_reader *, int, const char *msgid);
677 /* Same as cpp_error, except additionally specifies a position as a
678 (translation unit) physical line and physical column. If the line is
679 zero, then no location is printed. */
680 extern void cpp_error_with_line (cpp_reader *, int, unsigned, unsigned, const char *msgid, ...)
684 extern int cpp_ideq (const cpp_token *, const char *);
685 extern void cpp_output_line (cpp_reader *, FILE *);
686 extern void cpp_output_token (const cpp_token *, FILE *);
687 extern const char *cpp_type2name (enum cpp_ttype);
688 /* Returns the value of an escape sequence, truncated to the correct
689 target precision. PSTR points to the input pointer, which is just
690 after the backslash. LIMIT is how much text we have. WIDE is true
691 if the escape sequence is part of a wide character constant or
692 string literal. Handles all relevant diagnostics. */
693 extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr,
694 const unsigned char *limit, int wide);
698 /* Lookup an identifier in the hashtable. Puts the identifier in the
699 table if it is not already there. */
700 extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *,
703 typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *);
704 extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *);
707 extern void cpp_scan_nooutput (cpp_reader *);
708 extern int cpp_sys_macro_p (cpp_reader *);
709 extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *,
713 extern bool cpp_included (cpp_reader *, const char *);
714 extern void cpp_make_system_header (cpp_reader *, int, int);
715 extern void cpp_simplify_path (char *);
716 extern bool cpp_push_include (cpp_reader *, const char *);
717 extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *);
720 struct save_macro_data;
721 extern int cpp_save_state (cpp_reader *, FILE *);
722 extern int cpp_write_pch_deps (cpp_reader *, FILE *);
723 extern int cpp_write_pch_state (cpp_reader *, FILE *);
724 extern int cpp_valid_state (cpp_reader *, const char *, int);
725 extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **);
726 extern int cpp_read_state (cpp_reader *, const char *, FILE *,
727 struct save_macro_data *);
733 #endif /* ! GCC_CPPLIB_H */