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_path cpp_path
;
45 struct file_name_map_list
;
47 /* The first three groups, apart from '=', can appear in preprocessor
48 expressions (+= and -= are used to indicate unary + and - resp.).
49 This allows a lookup table to be implemented in _cpp_parse_expr.
51 The first group, to CPP_LAST_EQ, can be immediately followed by an
52 '='. The lexer needs operators ending in '=', like ">>=", to be in
53 the same order as their counterparts without the '=', like ">>". */
55 /* Positions in the table. */
56 #define CPP_LAST_EQ CPP_MAX
57 #define CPP_FIRST_DIGRAPH CPP_HASH
58 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
59 #define CPP_LAST_CPP_OP CPP_LESS_EQ
64 OP(CPP_GREATER, ">") /* compare */ \
66 OP(CPP_PLUS, "+") /* math */ \
71 OP(CPP_AND, "&") /* bit ops */ \
74 OP(CPP_RSHIFT, ">>") \
75 OP(CPP_LSHIFT, "<<") \
76 OP(CPP_MIN, "<?") /* extension */ \
80 OP(CPP_AND_AND, "&&") /* logical */ \
84 OP(CPP_COMMA, ",") /* grouping */ \
85 OP(CPP_OPEN_PAREN, "(") \
86 OP(CPP_CLOSE_PAREN, ")") \
87 TK(CPP_EOF, SPELL_NONE) \
88 OP(CPP_EQ_EQ, "==") /* compare */ \
89 OP(CPP_NOT_EQ, "!=") \
90 OP(CPP_GREATER_EQ, ">=") \
91 OP(CPP_LESS_EQ, "<=") \
93 /* These two are unary + / - in preprocessor expressions. */ \
94 OP(CPP_PLUS_EQ, "+=") /* math */ \
95 OP(CPP_MINUS_EQ, "-=") \
97 OP(CPP_MULT_EQ, "*=") \
98 OP(CPP_DIV_EQ, "/=") \
99 OP(CPP_MOD_EQ, "%=") \
100 OP(CPP_AND_EQ, "&=") /* bit ops */ \
101 OP(CPP_OR_EQ, "|=") \
102 OP(CPP_XOR_EQ, "^=") \
103 OP(CPP_RSHIFT_EQ, ">>=") \
104 OP(CPP_LSHIFT_EQ, "<<=") \
105 OP(CPP_MIN_EQ, "<?=") /* extension */ \
106 OP(CPP_MAX_EQ, ">?=") \
107 /* Digraphs together, beginning with CPP_FIRST_DIGRAPH. */ \
108 OP(CPP_HASH, "#") /* digraphs */ \
109 OP(CPP_PASTE, "##") \
110 OP(CPP_OPEN_SQUARE, "[") \
111 OP(CPP_CLOSE_SQUARE, "]") \
112 OP(CPP_OPEN_BRACE, "{") \
113 OP(CPP_CLOSE_BRACE, "}") \
114 /* The remainder of the punctuation. Order is not significant. */ \
115 OP(CPP_SEMICOLON, ";") /* structure */ \
116 OP(CPP_ELLIPSIS, "...") \
117 OP(CPP_PLUS_PLUS, "++") /* increment */ \
118 OP(CPP_MINUS_MINUS, "--") \
119 OP(CPP_DEREF, "->") /* accessors */ \
121 OP(CPP_SCOPE, "::") \
122 OP(CPP_DEREF_STAR, "->*") \
123 OP(CPP_DOT_STAR, ".*") \
124 OP(CPP_ATSIGN, "@") /* used in Objective-C */ \
126 TK(CPP_NAME, SPELL_IDENT) /* word */ \
127 TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \
129 TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
130 TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
131 TK(CPP_OTHER, SPELL_NUMBER) /* stray punctuation */ \
133 TK(CPP_STRING, SPELL_STRING) /* "string" */ \
134 TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
135 TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
137 TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \
138 /* SPELL_NUMBER happens to DTRT. */ \
139 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
140 TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */
152 /* C language kind, used when calling cpp_reader_init. */
153 enum c_lang
{CLK_GNUC89
= 0, CLK_GNUC99
, CLK_STDC89
, CLK_STDC94
, CLK_STDC99
,
154 CLK_GNUCXX
, CLK_CXX98
, CLK_ASM
};
156 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
160 const unsigned char *text
;
163 /* Flags for the cpp_token structure. */
164 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
165 #define DIGRAPH (1 << 1) /* If it was a digraph. */
166 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
167 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
168 #define NAMED_OP (1 << 4) /* C++ named operators. */
169 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
170 #define BOL (1 << 6) /* Token at beginning of line. */
172 /* A preprocessing token. This has been carefully packed and should
173 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
176 unsigned int line
; /* Logical line of first char of token. */
177 unsigned short col
; /* Column of first char of token. */
178 ENUM_BITFIELD(cpp_ttype
) type
: CHAR_BIT
; /* token type */
179 unsigned char flags
; /* flags - see above */
183 cpp_hashnode
*node
; /* An identifier. */
184 const cpp_token
*source
; /* Inherit padding from this token. */
185 struct cpp_string str
; /* A string, or number. */
186 unsigned int arg_no
; /* Argument no. for a CPP_MACRO_ARG. */
190 /* A type wide enough to hold any multibyte source character.
191 cpplib's character constant interpreter requires an unsigned type.
192 Also, a typedef for the signed equivalent. */
193 #ifndef MAX_WCHAR_TYPE_SIZE
194 # define MAX_WCHAR_TYPE_SIZE WCHAR_TYPE_SIZE
196 #if CHAR_BIT * SIZEOF_INT >= MAX_WCHAR_TYPE_SIZE
197 # define CPPCHAR_SIGNED_T int
199 # if CHAR_BIT * SIZEOF_LONG >= MAX_WCHAR_TYPE_SIZE || !HAVE_LONG_LONG
200 # define CPPCHAR_SIGNED_T long
202 # define CPPCHAR_SIGNED_T long long
205 typedef unsigned CPPCHAR_SIGNED_T cppchar_t
;
206 typedef CPPCHAR_SIGNED_T cppchar_signed_t
;
208 /* This structure is nested inside struct cpp_reader, and
209 carries all the options visible to the command line. */
212 /* Characters between tab stops. */
213 unsigned int tabstop
;
215 /* Map between header names and file names, used only on DOS where
216 file names are limited in length. */
217 struct file_name_map_list
*map_list
;
219 /* The language we're preprocessing. */
222 /* Nonzero means use extra default include directories for C++. */
223 unsigned char cplusplus
;
225 /* Nonzero means handle cplusplus style comments */
226 unsigned char cplusplus_comments
;
228 /* Nonzero means define __OBJC__, treat @ as a special token, and
229 use the OBJC[PLUS]_INCLUDE_PATH environment variable. */
232 /* Nonzero means don't copy comments into the output file. */
233 unsigned char discard_comments
;
235 /* Nonzero means don't copy comments into the output file during
237 unsigned char discard_comments_in_macro_exp
;
239 /* Nonzero means process the ISO trigraph sequences. */
240 unsigned char trigraphs
;
242 /* Nonzero means process the ISO digraph sequences. */
243 unsigned char digraphs
;
245 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
246 unsigned char extended_numbers
;
248 /* Nonzero means print names of header files (-H). */
249 unsigned char print_include_names
;
251 /* Nonzero means cpp_pedwarn causes a hard error. */
252 unsigned char pedantic_errors
;
254 /* Nonzero means don't print warning messages. */
255 unsigned char inhibit_warnings
;
257 /* Nonzero means complain about deprecated features. */
258 unsigned char warn_deprecated
;
260 /* Nonzero means don't suppress warnings from system headers. */
261 unsigned char warn_system_headers
;
263 /* Nonzero means don't print error messages. Has no option to
264 select it, but can be set by a user of cpplib (e.g. fix-header). */
265 unsigned char inhibit_errors
;
267 /* Nonzero means warn if slash-star appears in a comment. */
268 unsigned char warn_comments
;
270 /* Nonzero means warn if there are any trigraphs. */
271 unsigned char warn_trigraphs
;
273 /* Nonzero means warn if #import is used. */
274 unsigned char warn_import
;
276 /* Nonzero means warn about multicharacter charconsts. */
277 unsigned char warn_multichar
;
279 /* Nonzero means warn about various incompatibilities with
281 unsigned char warn_traditional
;
283 /* Nonzero means warn about long long numeric constants. */
284 unsigned char warn_long_long
;
286 /* Nonzero means warn about text after an #endif (or #else). */
287 unsigned char warn_endif_labels
;
289 /* Nonzero means warn about implicit sign changes owing to integer
291 unsigned char warn_num_sign_change
;
293 /* Nonzero means turn warnings into errors. */
294 unsigned char warnings_are_errors
;
296 /* Nonzero means we should look for header.gcc files that remap file
300 /* Zero means dollar signs are punctuation. */
301 unsigned char dollars_in_ident
;
303 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
304 unsigned char warn_undef
;
306 /* Nonzero means warn of unused macros from the main file. */
307 unsigned char warn_unused_macros
;
309 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
312 /* Nonzero if we are conforming to a specific C or C++ standard. */
315 /* Nonzero means give all the error messages the ANSI standard requires. */
316 unsigned char pedantic
;
318 /* Nonzero means we're looking at already preprocessed code, so don't
319 bother trying to do macro expansion and whatnot. */
320 unsigned char preprocessed
;
322 /* Print column number in error messages. */
323 unsigned char show_column
;
325 /* Nonzero means handle C++ alternate operator names. */
326 unsigned char operator_names
;
328 /* True for traditional preprocessing. */
329 unsigned char traditional
;
331 /* True to warn about precompiled header files we couldn't use. */
332 bool warn_invalid_pch
;
334 /* True if dependencies should be restored from a precompiled header. */
335 bool restore_pch_deps
;
337 /* Dependency generation. */
340 /* Style of header dependencies to generate. */
341 enum {DEPS_NONE
= 0, DEPS_USER
, DEPS_SYSTEM
} style
;
343 /* Assume missing files are generated files. */
346 /* Generate phony targets for each dependency apart from the first
350 /* If true, no dependency is generated on the main file. */
351 bool ignore_main_file
;
354 /* Target-specific features set by the front end or client. */
356 /* Precision for target CPP arithmetic, target characters, target
357 ints and target wide characters, respectively. */
358 size_t precision
, char_precision
, int_precision
, wchar_precision
;
360 /* True means chars (wide chars) are unsigned. */
361 bool unsigned_char
, unsigned_wchar
;
363 /* True if target is EBCDIC. */
366 /* Nonzero means __STDC__ should have the value 0 in system headers. */
367 unsigned char stdc_0_in_system_headers
;
373 /* Called when a new line of preprocessed output is started. */
374 void (*line_change
) PARAMS ((cpp_reader
*, const cpp_token
*, int));
375 void (*file_change
) PARAMS ((cpp_reader
*, const struct line_map
*));
376 void (*include
) PARAMS ((cpp_reader
*, unsigned int,
377 const unsigned char *, const char *, int));
378 void (*define
) PARAMS ((cpp_reader
*, unsigned int, cpp_hashnode
*));
379 void (*undef
) PARAMS ((cpp_reader
*, unsigned int, cpp_hashnode
*));
380 void (*ident
) PARAMS ((cpp_reader
*, unsigned int, const cpp_string
*));
381 void (*def_pragma
) PARAMS ((cpp_reader
*, unsigned int));
382 int (*valid_pch
) PARAMS ((cpp_reader
*, const char *, int));
383 void (*read_pch
) PARAMS ((cpp_reader
*, const char *, int, const char *));
386 /* Chain of directories to look for include files in. */
389 /* NULL-terminated singly-linked list. */
390 struct cpp_path
*next
;
392 /* NAME need not be NUL-terminated once inside cpplib. */
396 /* One if a system header, two if a system header that has extern
397 "C" guards for C++. */
400 /* Mapping of file names for this directory for MS-DOS and
401 related platforms. */
402 struct file_name_map
*name_map
;
404 /* The C front end uses these to recognize duplicated
405 directories in the search path. */
410 /* Name under which this program was invoked. */
411 extern const char *progname
;
413 /* The structure of a node in the hash table. The hash table has
414 entries for all identifiers: either macros defined by #define
415 commands (type NT_MACRO), assertions created with #assert
416 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
417 like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are
418 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
419 identifier that behaves like an operator such as "xor".
420 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
421 diagnostic may be required for this node. Currently this only
422 applies to __VA_ARGS__ and poisoned identifiers. */
424 /* Hash node flags. */
425 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
426 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
427 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
428 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
429 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
430 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
431 #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */
433 /* Different flavors of hash node. */
436 NT_VOID
= 0, /* No definition yet. */
437 NT_MACRO
, /* A macro of some form. */
438 NT_ASSERTION
/* Predicate for #assert. */
441 /* Different flavors of builtin macro. _Pragma is an operator, but we
442 handle it with the builtin code for efficiency reasons. */
445 BT_SPECLINE
= 0, /* `__LINE__' */
446 BT_DATE
, /* `__DATE__' */
447 BT_FILE
, /* `__FILE__' */
448 BT_BASE_FILE
, /* `__BASE_FILE__' */
449 BT_INCLUDE_LEVEL
, /* `__INCLUDE_LEVEL__' */
450 BT_TIME
, /* `__TIME__' */
451 BT_STDC
, /* `__STDC__' */
452 BT_PRAGMA
/* `_Pragma' operator */
455 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
456 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
457 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
458 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
460 /* The common part of an identifier node shared amongst all 3 C front
461 ends. Also used to store CPP identifiers, which are a superset of
462 identifiers in the grammatical sense. */
463 struct cpp_hashnode
GTY(())
465 struct ht_identifier ident
;
466 unsigned int is_directive
: 1;
467 unsigned int directive_index
: 7; /* If is_directive,
468 then index into directive table.
469 Otherwise, a NODE_OPERATOR. */
470 unsigned char rid_code
; /* Rid code - for front ends. */
471 ENUM_BITFIELD(node_type
) type
: 8; /* CPP node type. */
472 unsigned char flags
; /* CPP flags. */
474 union _cpp_hashnode_value
477 cpp_macro
* GTY((skip (""))) macro
;
478 /* Answers to an assertion. */
479 struct answer
* GTY ((skip (""))) answers
;
480 /* Code for a builtin macro. */
481 enum builtin_type
GTY ((tag ("1"))) builtin
;
482 /* Macro argument index. */
483 unsigned short GTY ((tag ("0"))) arg_index
;
484 } GTY ((desc ("0"))) value
;
487 /* Call this first to get a handle to pass to other functions.
489 If you want cpplib to manage its own hashtable, pass in a NULL
490 pointer. Otherwise you should pass in an initialized hash table
491 that cpplib will share; this technique is used by the C front
493 extern cpp_reader
*cpp_create_reader
PARAMS ((enum c_lang
, struct ht
*));
495 /* Call this to change the selected language standard (e.g. because of
496 command line options). */
497 extern void cpp_set_lang
PARAMS ((cpp_reader
*, enum c_lang
));
499 /* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
500 called any number of times before cpp_read_main_file(). If no
501 targets have been added before cpp_read_main_file(), then the
502 default target is used. */
503 extern void cpp_add_dependency_target
PARAMS ((cpp_reader
*,
507 /* Set the include paths. */
508 extern void cpp_set_include_chains
PARAMS ((cpp_reader
*, cpp_path
*,
511 /* Call these to get pointers to the options and callback structures
512 for a given reader. These pointers are good until you call
513 cpp_finish on that reader. You can either edit the callbacks
514 through the pointer returned from cpp_get_callbacks, or set them
515 with cpp_set_callbacks. */
516 extern cpp_options
*cpp_get_options
PARAMS ((cpp_reader
*));
517 extern const struct line_maps
*cpp_get_line_maps
PARAMS ((cpp_reader
*));
518 extern cpp_callbacks
*cpp_get_callbacks
PARAMS ((cpp_reader
*));
519 extern void cpp_set_callbacks
PARAMS ((cpp_reader
*, cpp_callbacks
*));
521 /* This function reads the file, but does not start preprocessing. It
522 returns the name of the original file; this is the same as the
523 input file, except for preprocessed input. This will generate at
524 least one file change callback, and possibly a line change callback
525 too. If there was an error opening the file, it returns NULL. */
526 extern const char *cpp_read_main_file
PARAMS ((cpp_reader
*, const char *));
528 /* Set up built-ins like __FILE__. */
529 extern void cpp_init_builtins
PARAMS ((cpp_reader
*));
531 /* Call this to finish preprocessing. If you requested dependency
532 generation, pass an open stream to write the information to,
533 otherwise NULL. It is your responsibility to close the stream.
535 Returns cpp_errors (pfile). */
536 extern int cpp_finish
PARAMS ((cpp_reader
*, FILE *deps_stream
));
538 /* Call this to release the handle at the end of preprocessing. Any
539 use of the handle after this function returns is invalid. Returns
540 cpp_errors (pfile). */
541 extern void cpp_destroy
PARAMS ((cpp_reader
*));
544 extern unsigned int cpp_errors
PARAMS ((cpp_reader
*));
546 extern unsigned int cpp_token_len
PARAMS ((const cpp_token
*));
547 extern unsigned char *cpp_token_as_text
PARAMS ((cpp_reader
*,
549 extern unsigned char *cpp_spell_token
PARAMS ((cpp_reader
*, const cpp_token
*,
551 extern void cpp_register_pragma
PARAMS ((cpp_reader
*,
552 const char *, const char *,
553 void (*) PARAMS ((cpp_reader
*))));
555 extern int cpp_avoid_paste
PARAMS ((cpp_reader
*, const cpp_token
*,
557 extern const cpp_token
*cpp_get_token
PARAMS ((cpp_reader
*));
558 extern const unsigned char *cpp_macro_definition
PARAMS ((cpp_reader
*,
559 const cpp_hashnode
*));
560 extern void _cpp_backup_tokens
PARAMS ((cpp_reader
*, unsigned int));
562 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
564 cpp_interpret_charconst
PARAMS ((cpp_reader
*, const cpp_token
*,
565 unsigned int *, int *));
567 /* Used to register macros and assertions, perhaps from the command line.
568 The text is the same as the command line argument. */
569 extern void cpp_define
PARAMS ((cpp_reader
*, const char *));
570 extern void cpp_assert
PARAMS ((cpp_reader
*, const char *));
571 extern void cpp_undef
PARAMS ((cpp_reader
*, const char *));
572 extern void cpp_unassert
PARAMS ((cpp_reader
*, const char *));
574 extern cpp_buffer
*cpp_push_buffer
PARAMS ((cpp_reader
*,
575 const unsigned char *, size_t,
577 extern int cpp_defined
PARAMS ((cpp_reader
*, const unsigned char *, int));
579 /* A preprocessing number. Code assumes that any unused high bits of
580 the double integer are set to zero. */
581 typedef unsigned HOST_WIDE_INT cpp_num_part
;
582 typedef struct cpp_num cpp_num
;
587 bool unsignedp
; /* True if value should be treated as unsigned. */
588 bool overflow
; /* True if the most recent calculation overflowed. */
591 /* cpplib provides two interfaces for interpretation of preprocessing
594 cpp_classify_number categorizes numeric constants according to
595 their field (integer, floating point, or invalid), radix (decimal,
596 octal, hexadecimal), and type suffixes. */
598 #define CPP_N_CATEGORY 0x000F
599 #define CPP_N_INVALID 0x0000
600 #define CPP_N_INTEGER 0x0001
601 #define CPP_N_FLOATING 0x0002
603 #define CPP_N_WIDTH 0x00F0
604 #define CPP_N_SMALL 0x0010 /* int, float. */
605 #define CPP_N_MEDIUM 0x0020 /* long, double. */
606 #define CPP_N_LARGE 0x0040 /* long long, long double. */
608 #define CPP_N_RADIX 0x0F00
609 #define CPP_N_DECIMAL 0x0100
610 #define CPP_N_HEX 0x0200
611 #define CPP_N_OCTAL 0x0400
613 #define CPP_N_UNSIGNED 0x1000 /* Properties. */
614 #define CPP_N_IMAGINARY 0x2000
616 /* Classify a CPP_NUMBER token. The return value is a combination of
617 the flags from the above sets. */
618 extern unsigned cpp_classify_number
PARAMS ((cpp_reader
*, const cpp_token
*));
620 /* Evaluate a token classified as category CPP_N_INTEGER. */
621 extern cpp_num cpp_interpret_integer
PARAMS ((cpp_reader
*, const cpp_token
*,
624 /* Sign extend a number, with PRECISION significant bits and all
625 others assumed clear, to fill out a cpp_num structure. */
626 cpp_num cpp_num_sign_extend
PARAMS ((cpp_num
, size_t));
628 /* Diagnostic levels. To get a diagnostic without associating a
629 position in the translation unit with it, use cpp_error_with_line
630 with a line number of zero. */
632 /* Warning, an error with -Werror. */
633 #define DL_WARNING 0x00
634 /* Same as DL_WARNING, except it is not suppressed in system headers. */
635 #define DL_WARNING_SYSHDR 0x01
636 /* Warning, an error with -pedantic-errors or -Werror. */
637 #define DL_PEDWARN 0x02
639 #define DL_ERROR 0x03
640 /* An internal consistency check failed. Prints "internal error: ",
641 otherwise the same as DL_ERROR. */
643 /* Extracts a diagnostic level from an int. */
644 #define DL_EXTRACT(l) (l & 0xf)
645 /* Nonzero if a diagnostic level is one of the warnings. */
646 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
647 && DL_EXTRACT (l) <= DL_PEDWARN)
649 /* N.B. The error-message-printer prototypes have not been nicely
650 formatted because exgettext needs to see 'msgid' on the same line
651 as the name of the function in order to work properly. Only the
652 string argument gets a name in an effort to keep the lines from
653 getting ridiculously oversized. */
655 /* Output a diagnostic of some kind. */
656 extern void cpp_error
PARAMS ((cpp_reader
*, int, const char *msgid
, ...))
659 /* Output a diagnostic of severity LEVEL, with "MSG: " preceding the
660 error string of errno. No location is printed. */
661 extern void cpp_errno
PARAMS ((cpp_reader
*, int level
, const char *msg
));
663 /* Same as cpp_error, except additionally specifies a position as a
664 (translation unit) physical line and physical column. If the line is
665 zero, then no location is printed. */
666 extern void cpp_error_with_line
PARAMS ((cpp_reader
*, int, unsigned, unsigned, const char *msgid
, ...))
670 extern int cpp_ideq
PARAMS ((const cpp_token
*,
672 extern void cpp_output_line
PARAMS ((cpp_reader
*, FILE *));
673 extern void cpp_output_token
PARAMS ((const cpp_token
*, FILE *));
674 extern const char *cpp_type2name
PARAMS ((enum cpp_ttype
));
675 /* Returns the value of an escape sequence, truncated to the correct
676 target precision. PSTR points to the input pointer, which is just
677 after the backslash. LIMIT is how much text we have. WIDE is true
678 if the escape sequence is part of a wide character constant or
679 string literal. Handles all relevant diagnostics. */
680 extern cppchar_t cpp_parse_escape
PARAMS ((cpp_reader
*,
681 const unsigned char ** pstr
,
682 const unsigned char *limit
,
687 /* Lookup an identifier in the hashtable. Puts the identifier in the
688 table if it is not already there. */
689 extern cpp_hashnode
*cpp_lookup
PARAMS ((cpp_reader
*,
690 const unsigned char *,
693 typedef int (*cpp_cb
) PARAMS ((cpp_reader
*, cpp_hashnode
*, void *));
694 extern void cpp_forall_identifiers
PARAMS ((cpp_reader
*,
698 extern void cpp_scan_nooutput
PARAMS ((cpp_reader
*));
699 extern int cpp_sys_macro_p
PARAMS ((cpp_reader
*));
700 extern unsigned char *cpp_quote_string
PARAMS ((unsigned char *,
701 const unsigned char *,
705 extern int cpp_included
PARAMS ((cpp_reader
*, const char *));
706 extern void cpp_make_system_header
PARAMS ((cpp_reader
*, int, int));
707 extern void cpp_simplify_path
PARAMS ((char *));
708 extern bool cpp_push_include
PARAMS ((cpp_reader
*, const char *));
709 extern void cpp_change_file
PARAMS ((cpp_reader
*, enum lc_reason
,
713 struct save_macro_data
;
714 extern int cpp_save_state
PARAMS ((cpp_reader
*, FILE *));
715 extern int cpp_write_pch_deps
PARAMS ((cpp_reader
*, FILE *));
716 extern int cpp_write_pch_state
PARAMS ((cpp_reader
*, FILE *));
717 extern int cpp_valid_state
PARAMS ((cpp_reader
*, const char *, int));
718 extern void cpp_prepare_state
PARAMS ((cpp_reader
*,
719 struct save_macro_data
**));
720 extern int cpp_read_state
PARAMS ((cpp_reader
*, const char *, FILE *,
721 struct save_macro_data
*));
727 #endif /* ! GCC_CPPLIB_H */