atomicity.h: Provide atomic __exchange_and_add and __atomic_add.
[official-gcc.git] / gcc / cpplib.h
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1 /* Definitions for CPP library.
2 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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
9 later version.
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! */
23 #ifndef GCC_CPPLIB_H
24 #define GCC_CPPLIB_H
26 #include <sys/types.h>
27 #include "hashtable.h"
28 #include "line-map.h"
30 #ifdef __cplusplus
31 extern "C" {
32 #endif
34 /* For complex reasons, cpp_reader is also typedefed in c-pragma.h. */
35 #ifndef GCC_C_PRAGMA_H
36 typedef struct cpp_reader cpp_reader;
37 #endif
38 typedef struct cpp_buffer cpp_buffer;
39 typedef struct cpp_options cpp_options;
40 typedef struct cpp_token cpp_token;
41 typedef struct cpp_string cpp_string;
42 typedef struct cpp_hashnode cpp_hashnode;
43 typedef struct cpp_macro cpp_macro;
44 typedef struct cpp_callbacks cpp_callbacks;
46 struct answer;
47 struct file_name_map_list;
49 /* The first three groups, apart from '=', can appear in preprocessor
50 expressions (+= and -= are used to indicate unary + and - resp.).
51 This allows a lookup table to be implemented in _cpp_parse_expr.
53 The first group, to CPP_LAST_EQ, can be immediately followed by an
54 '='. The lexer needs operators ending in '=', like ">>=", to be in
55 the same order as their counterparts without the '=', like ">>". */
57 /* Positions in the table. */
58 #define CPP_LAST_EQ CPP_MAX
59 #define CPP_FIRST_DIGRAPH CPP_HASH
60 #define CPP_LAST_PUNCTUATOR CPP_DOT_STAR
61 #define CPP_LAST_CPP_OP CPP_LESS_EQ
63 #define TTYPE_TABLE \
64 OP(CPP_EQ = 0, "=") \
65 OP(CPP_NOT, "!") \
66 OP(CPP_GREATER, ">") /* compare */ \
67 OP(CPP_LESS, "<") \
68 OP(CPP_PLUS, "+") /* math */ \
69 OP(CPP_MINUS, "-") \
70 OP(CPP_MULT, "*") \
71 OP(CPP_DIV, "/") \
72 OP(CPP_MOD, "%") \
73 OP(CPP_AND, "&") /* bit ops */ \
74 OP(CPP_OR, "|") \
75 OP(CPP_XOR, "^") \
76 OP(CPP_RSHIFT, ">>") \
77 OP(CPP_LSHIFT, "<<") \
78 OP(CPP_MIN, "<?") /* extension */ \
79 OP(CPP_MAX, ">?") \
81 OP(CPP_COMPL, "~") \
82 OP(CPP_AND_AND, "&&") /* logical */ \
83 OP(CPP_OR_OR, "||") \
84 OP(CPP_QUERY, "?") \
85 OP(CPP_COLON, ":") \
86 OP(CPP_COMMA, ",") /* grouping */ \
87 OP(CPP_OPEN_PAREN, "(") \
88 OP(CPP_CLOSE_PAREN, ")") \
89 TK(CPP_EOF, SPELL_NONE) \
90 OP(CPP_EQ_EQ, "==") /* compare */ \
91 OP(CPP_NOT_EQ, "!=") \
92 OP(CPP_GREATER_EQ, ">=") \
93 OP(CPP_LESS_EQ, "<=") \
95 /* These two are unary + / - in preprocessor expressions. */ \
96 OP(CPP_PLUS_EQ, "+=") /* math */ \
97 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 */ \
122 OP(CPP_DOT, ".") \
123 OP(CPP_SCOPE, "::") \
124 OP(CPP_DEREF_STAR, "->*") \
125 OP(CPP_DOT_STAR, ".*") \
126 OP(CPP_ATSIGN, "@") /* used in Objective-C */ \
128 TK(CPP_NAME, SPELL_IDENT) /* word */ \
129 TK(CPP_NUMBER, SPELL_NUMBER) /* 34_be+ta */ \
131 TK(CPP_CHAR, SPELL_STRING) /* 'char' */ \
132 TK(CPP_WCHAR, SPELL_STRING) /* L'char' */ \
133 TK(CPP_OTHER, SPELL_CHAR) /* stray punctuation */ \
135 TK(CPP_STRING, SPELL_STRING) /* "string" */ \
136 TK(CPP_WSTRING, SPELL_STRING) /* L"string" */ \
137 TK(CPP_HEADER_NAME, SPELL_STRING) /* <stdio.h> in #include */ \
139 TK(CPP_COMMENT, SPELL_NUMBER) /* Only if output comments. */ \
140 /* SPELL_NUMBER happens to DTRT. */ \
141 TK(CPP_MACRO_ARG, SPELL_NONE) /* Macro argument. */ \
142 TK(CPP_PADDING, SPELL_NONE) /* Whitespace for cpp0. */
144 #define OP(e, s) e,
145 #define TK(e, s) e,
146 enum cpp_ttype
148 TTYPE_TABLE
149 N_TTYPES
151 #undef OP
152 #undef TK
154 /* C language kind, used when calling cpp_reader_init. */
155 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
156 CLK_GNUCXX, CLK_CXX98, CLK_ASM};
158 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
159 struct cpp_string
161 unsigned int len;
162 const unsigned char *text;
165 /* Flags for the cpp_token structure. */
166 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
167 #define DIGRAPH (1 << 1) /* If it was a digraph. */
168 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
169 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
170 #define NAMED_OP (1 << 4) /* C++ named operators. */
171 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
172 #define BOL (1 << 6) /* Token at beginning of line. */
174 /* A preprocessing token. This has been carefully packed and should
175 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
176 struct cpp_token
178 unsigned int line; /* Logical line of first char of token. */
179 unsigned short col; /* Column of first char of token. */
180 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
181 unsigned char flags; /* flags - see above */
183 union
185 cpp_hashnode *node; /* An identifier. */
186 const cpp_token *source; /* Inherit padding from this token. */
187 struct cpp_string str; /* A string, or number. */
188 unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
189 unsigned char c; /* Character represented by CPP_OTHER. */
190 } val;
193 /* A type wide enough to hold any multibyte source character.
194 cpplib's character constant interpreter requires an unsigned type.
195 Also, a typedef for the signed equivalent. */
196 #ifndef MAX_WCHAR_TYPE_SIZE
197 # define MAX_WCHAR_TYPE_SIZE WCHAR_TYPE_SIZE
198 #endif
199 #if CHAR_BIT * SIZEOF_INT >= MAX_WCHAR_TYPE_SIZE
200 # define CPPCHAR_SIGNED_T int
201 #else
202 # if CHAR_BIT * SIZEOF_LONG >= MAX_WCHAR_TYPE_SIZE || !HAVE_LONG_LONG
203 # define CPPCHAR_SIGNED_T long
204 # else
205 # define CPPCHAR_SIGNED_T long long
206 # endif
207 #endif
208 typedef unsigned CPPCHAR_SIGNED_T cppchar_t;
209 typedef CPPCHAR_SIGNED_T cppchar_signed_t;
211 /* Values for opts.dump_macros.
212 dump_only means inhibit output of the preprocessed text
213 and instead output the definitions of all user-defined
214 macros in a form suitable for use as input to cpp.
215 dump_names means pass #define and the macro name through to output.
216 dump_definitions means pass the whole definition (plus #define) through
218 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
220 /* This structure is nested inside struct cpp_reader, and
221 carries all the options visible to the command line. */
222 struct cpp_options
224 /* Characters between tab stops. */
225 unsigned int tabstop;
227 /* Pending options - -D, -U, -A, -I, -ixxx. */
228 struct cpp_pending *pending;
230 /* Search paths for include files. */
231 struct search_path *quote_include; /* "" */
232 struct search_path *bracket_include; /* <> */
234 /* Map between header names and file names, used only on DOS where
235 file names are limited in length. */
236 struct file_name_map_list *map_list;
238 /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
239 in the standard include file directories. */
240 const char *include_prefix;
241 unsigned int include_prefix_len;
243 /* The language we're preprocessing. */
244 enum c_lang lang;
246 /* Non-0 means -v, so print the full set of include dirs. */
247 unsigned char verbose;
249 /* Nonzero means use extra default include directories for C++. */
250 unsigned char cplusplus;
252 /* Nonzero means handle cplusplus style comments */
253 unsigned char cplusplus_comments;
255 /* Nonzero means define __OBJC__, treat @ as a special token, and
256 use the OBJC[PLUS]_INCLUDE_PATH environment variable. */
257 unsigned char objc;
259 /* Nonzero means don't copy comments into the output file. */
260 unsigned char discard_comments;
262 /* Nonzero means don't copy comments into the output file during
263 macro expansion. */
264 unsigned char discard_comments_in_macro_exp;
266 /* Nonzero means process the ISO trigraph sequences. */
267 unsigned char trigraphs;
269 /* Nonzero means process the ISO digraph sequences. */
270 unsigned char digraphs;
272 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
273 unsigned char extended_numbers;
275 /* Nonzero means print names of header files (-H). */
276 unsigned char print_include_names;
278 /* Nonzero means cpp_pedwarn causes a hard error. */
279 unsigned char pedantic_errors;
281 /* Nonzero means don't print warning messages. */
282 unsigned char inhibit_warnings;
284 /* Nonzero means don't suppress warnings from system headers. */
285 unsigned char warn_system_headers;
287 /* Nonzero means don't print error messages. Has no option to
288 select it, but can be set by a user of cpplib (e.g. fix-header). */
289 unsigned char inhibit_errors;
291 /* Nonzero means warn if slash-star appears in a comment. */
292 unsigned char warn_comments;
294 /* Nonzero means warn if there are any trigraphs. */
295 unsigned char warn_trigraphs;
297 /* Nonzero means warn if #import is used. */
298 unsigned char warn_import;
300 /* Nonzero means warn about multicharacter charconsts. */
301 unsigned char warn_multichar;
303 /* Nonzero means warn about various incompatibilities with
304 traditional C. */
305 unsigned char warn_traditional;
307 /* Nonzero means warn about long long numeric constants. */
308 unsigned char warn_long_long;
310 /* Nonzero means warn about text after an #endif (or #else). */
311 unsigned char warn_endif_labels;
313 /* Nonzero means warn about implicit sign changes owing to integer
314 promotions. */
315 unsigned char warn_num_sign_change;
317 /* Nonzero means turn warnings into errors. */
318 unsigned char warnings_are_errors;
320 /* Nonzero causes output not to be done, but directives such as
321 #define that have side effects are still obeyed. */
322 unsigned char no_output;
324 /* Nonzero means we should look for header.gcc files that remap file
325 names. */
326 unsigned char remap;
328 /* Nonzero means don't output line number information. */
329 unsigned char no_line_commands;
331 /* Nonzero means -I- has been seen, so don't look for #include "foo"
332 the source-file directory. */
333 unsigned char ignore_srcdir;
335 /* Zero means dollar signs are punctuation. */
336 unsigned char dollars_in_ident;
338 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
339 unsigned char warn_undef;
341 /* Nonzero means warn of unused macros from the main file. */
342 unsigned char warn_unused_macros;
344 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
345 unsigned char c99;
347 /* Nonzero if we are conforming to a specific C or C++ standard. */
348 unsigned char std;
350 /* Nonzero means give all the error messages the ANSI standard requires. */
351 unsigned char pedantic;
353 /* Nonzero means we're looking at already preprocessed code, so don't
354 bother trying to do macro expansion and whatnot. */
355 unsigned char preprocessed;
357 /* Nonzero disables all the standard directories for headers. */
358 unsigned char no_standard_includes;
360 /* Nonzero disables the C++-specific standard directories for headers. */
361 unsigned char no_standard_cplusplus_includes;
363 /* Nonzero means dump macros in some fashion - see above. */
364 unsigned char dump_macros;
366 /* Nonzero means pass #include lines through to the output. */
367 unsigned char dump_includes;
369 /* Print column number in error messages. */
370 unsigned char show_column;
372 /* Nonzero means handle C++ alternate operator names. */
373 unsigned char operator_names;
375 /* True for traditional preprocessing. */
376 unsigned char traditional;
378 /* Dependency generation. */
379 struct
381 /* Style of header dependencies to generate. */
382 enum {DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM } style;
384 /* Assume missing files are generated files. */
385 bool missing_files;
387 /* Generate phony targets for each dependency apart from the first
388 one. */
389 bool phony_targets;
391 /* If true, no dependency is generated on the main file. */
392 bool ignore_main_file;
393 } deps;
395 /* Target-specific features set by the front end or client. */
397 /* Precision for target CPP arithmetic, target characters, target
398 ints and target wide characters, respectively. */
399 size_t precision, char_precision, int_precision, wchar_precision;
401 /* True means chars (wide chars) are unsigned. */
402 bool unsigned_char, unsigned_wchar;
404 /* Nonzero means __STDC__ should have the value 0 in system headers. */
405 unsigned char stdc_0_in_system_headers;
408 /* Call backs. */
409 struct cpp_callbacks
411 /* Called when a new line of preprocessed output is started. */
412 void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int));
413 void (*file_change) PARAMS ((cpp_reader *, const struct line_map *));
414 void (*include) PARAMS ((cpp_reader *, unsigned int,
415 const unsigned char *, const cpp_token *));
416 void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
417 void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
418 void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
419 void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
420 /* Called when the client has a chance to properly register
421 built-ins with cpp_define() and cpp_assert(). */
422 void (*register_builtins) PARAMS ((cpp_reader *));
425 /* Name under which this program was invoked. */
426 extern const char *progname;
428 /* The structure of a node in the hash table. The hash table has
429 entries for all identifiers: either macros defined by #define
430 commands (type NT_MACRO), assertions created with #assert
431 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
432 like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
433 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
434 identifier that behaves like an operator such as "xor".
435 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
436 diagnostic may be required for this node. Currently this only
437 applies to __VA_ARGS__ and poisoned identifiers. */
439 /* Hash node flags. */
440 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
441 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
442 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
443 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
444 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
445 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
447 /* Different flavors of hash node. */
448 enum node_type
450 NT_VOID = 0, /* No definition yet. */
451 NT_MACRO, /* A macro of some form. */
452 NT_ASSERTION /* Predicate for #assert. */
455 /* Different flavors of builtin macro. _Pragma is an operator, but we
456 handle it with the builtin code for efficiency reasons. */
457 enum builtin_type
459 BT_SPECLINE = 0, /* `__LINE__' */
460 BT_DATE, /* `__DATE__' */
461 BT_FILE, /* `__FILE__' */
462 BT_BASE_FILE, /* `__BASE_FILE__' */
463 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
464 BT_TIME, /* `__TIME__' */
465 BT_STDC, /* `__STDC__' */
466 BT_PRAGMA /* `_Pragma' operator */
469 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
470 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
471 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
472 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
474 /* The common part of an identifier node shared amongst all 3 C front
475 ends. Also used to store CPP identifiers, which are a superset of
476 identifiers in the grammatical sense. */
477 struct cpp_hashnode
479 struct ht_identifier ident;
480 unsigned short arg_index; /* Macro argument index. */
481 unsigned char directive_index; /* Index into directive table. */
482 unsigned char rid_code; /* Rid code - for front ends. */
483 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
484 unsigned char flags; /* CPP flags. */
486 union
488 cpp_macro *macro; /* If a macro. */
489 struct answer *answers; /* Answers to an assertion. */
490 enum cpp_ttype operator; /* Code for a named operator. */
491 enum builtin_type builtin; /* Code for a builtin macro. */
492 } value;
495 /* Call this first to get a handle to pass to other functions. */
496 extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
498 /* Call this to change the selected language standard (e.g. because of
499 command line options). */
500 extern void cpp_set_lang PARAMS ((cpp_reader *, enum c_lang));
502 /* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
503 called any number of times before cpp_read_main_file(). If no
504 targets have been added before cpp_read_main_file(), then the
505 default target is used. */
506 extern void cpp_add_dependency_target PARAMS ((cpp_reader *,
507 const char * target,
508 int quote));
510 /* Call these to get pointers to the options and callback structures
511 for a given reader. These pointers are good until you call
512 cpp_finish on that reader. You can either edit the callbacks
513 through the pointer returned from cpp_get_callbacks, or set them
514 with cpp_set_callbacks. */
515 extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
516 extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
517 extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
518 extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
520 /* Now call cpp_handle_option[s] to handle 1[or more] switches. The
521 return value is the number of arguments used. If
522 cpp_handle_options returns without using all arguments, it couldn't
523 understand the next switch. Options processing is not completed
524 until you call cpp_finish_options. */
525 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
526 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
528 /* This function reads the file, but does not start preprocessing. It
529 returns the name of the original file; this is the same as the
530 input file, except for preprocessed input. This will generate at
531 least one file change callback, and possibly a line change callback
532 too. If there was an error opening the file, it returns NULL.
534 If you want cpplib to manage its own hashtable, pass in a NULL
535 pointer. Otherise you should pass in an initialized hash table
536 that cpplib will share; this technique is used by the C front
537 ends. */
538 extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
539 struct ht *));
541 /* Deferred handling of command line options that can generate debug
542 callbacks, such as -D and -imacros. Call this after
543 cpp_read_main_file. The front ends need this separation so they
544 can initialize debug output with the original file name, returned
545 from cpp_read_main_file, before they get debug callbacks. */
546 extern void cpp_finish_options PARAMS ((cpp_reader *));
548 /* Call this to finish preprocessing. If you requested dependency
549 generation, pass an open stream to write the information to,
550 otherwise NULL. It is your responsibility to close the stream.
552 Returns cpp_errors (pfile). */
553 extern int cpp_finish PARAMS ((cpp_reader *, FILE *deps_stream));
555 /* Call this to release the handle at the end of preprocessing. Any
556 use of the handle after this function returns is invalid. Returns
557 cpp_errors (pfile). */
558 extern void cpp_destroy PARAMS ((cpp_reader *));
560 /* Error count. */
561 extern unsigned int cpp_errors PARAMS ((cpp_reader *));
563 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
564 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
565 const cpp_token *));
566 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
567 unsigned char *));
568 extern void cpp_register_pragma PARAMS ((cpp_reader *,
569 const char *, const char *,
570 void (*) PARAMS ((cpp_reader *))));
572 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
573 const cpp_token *));
574 extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *));
575 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
576 const cpp_hashnode *));
577 extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int));
579 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
580 extern cppchar_t
581 cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
582 unsigned int *, int *));
584 /* Used to register builtins during the register_builtins callback.
585 The text is the same as the command line argument. */
586 extern void cpp_define PARAMS ((cpp_reader *, const char *));
587 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
588 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
589 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
591 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
592 const unsigned char *, size_t,
593 int, int));
594 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
596 /* A preprocessing number. Code assumes that any unused high bits of
597 the double integer are set to zero. */
598 typedef unsigned HOST_WIDE_INT cpp_num_part;
599 typedef struct cpp_num cpp_num;
600 struct cpp_num
602 cpp_num_part high;
603 cpp_num_part low;
604 bool unsignedp; /* True if value should be treated as unsigned. */
605 bool overflow; /* True if the most recent calculation overflowed. */
608 /* cpplib provides two interfaces for interpretation of preprocessing
609 numbers.
611 cpp_classify_number categorizes numeric constants according to
612 their field (integer, floating point, or invalid), radix (decimal,
613 octal, hexadecimal), and type suffixes. */
615 #define CPP_N_CATEGORY 0x000F
616 #define CPP_N_INVALID 0x0000
617 #define CPP_N_INTEGER 0x0001
618 #define CPP_N_FLOATING 0x0002
620 #define CPP_N_WIDTH 0x00F0
621 #define CPP_N_SMALL 0x0010 /* int, float. */
622 #define CPP_N_MEDIUM 0x0020 /* long, double. */
623 #define CPP_N_LARGE 0x0040 /* long long, long double. */
625 #define CPP_N_RADIX 0x0F00
626 #define CPP_N_DECIMAL 0x0100
627 #define CPP_N_HEX 0x0200
628 #define CPP_N_OCTAL 0x0400
630 #define CPP_N_UNSIGNED 0x1000 /* Properties. */
631 #define CPP_N_IMAGINARY 0x2000
633 /* Classify a CPP_NUMBER token. The return value is a combination of
634 the flags from the above sets. */
635 extern unsigned cpp_classify_number PARAMS ((cpp_reader *, const cpp_token *));
637 /* Evaluate a token classified as category CPP_N_INTEGER. */
638 extern cpp_num cpp_interpret_integer PARAMS ((cpp_reader *, const cpp_token *,
639 unsigned int type));
641 /* Sign extend a number, with PRECISION significant bits and all
642 others assumed clear, to fill out a cpp_num structure. */
643 cpp_num cpp_num_sign_extend PARAMS ((cpp_num, size_t));
645 /* Diagnostic levels. To get a dianostic without associating a
646 position in the translation unit with it, use cpp_error_with_line
647 with a line number of zero. */
649 /* Warning, an error with -Werror. */
650 #define DL_WARNING 0x00
651 /* Same as DL_WARNING, except it is not suppressed in system headers. */
652 #define DL_WARNING_SYSHDR 0x01
653 /* Warning, an error with -pedantic-errors or -Werror. */
654 #define DL_PEDWARN 0x02
655 /* An error. */
656 #define DL_ERROR 0x03
657 /* An internal consistency check failed. Prints "internal error: ",
658 otherwise the same as DL_ERROR. */
659 #define DL_ICE 0x04
660 /* Extracts a diagnostic level from an int. */
661 #define DL_EXTRACT(l) (l & 0xf)
662 /* Nonzero if a diagnostic level is one of the warnings. */
663 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
664 && DL_EXTRACT (l) <= DL_PEDWARN)
666 /* N.B. The error-message-printer prototypes have not been nicely
667 formatted because exgettext needs to see 'msgid' on the same line
668 as the name of the function in order to work properly. Only the
669 string argument gets a name in an effort to keep the lines from
670 getting ridiculously oversized. */
672 /* Output a diagnostic of some kind. */
673 extern void cpp_error PARAMS ((cpp_reader *, int, const char *msgid, ...))
674 ATTRIBUTE_PRINTF_3;
676 /* Output a diagnostic of severity LEVEL, with "MSG: " preceding the
677 error string of errno. No location is printed. */
678 extern void cpp_errno PARAMS ((cpp_reader *, int level, const char *msg));
680 /* Same as cpp_error, except additionally specifies a position as a
681 (translation unit) physical line and physical column. If the line is
682 zero, then no location is printed. */
683 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, unsigned, unsigned, const char *msgid, ...))
684 ATTRIBUTE_PRINTF_5;
686 /* In cpplex.c */
687 extern int cpp_ideq PARAMS ((const cpp_token *,
688 const char *));
689 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
690 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
691 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
692 /* Returns the value of an escape sequence, truncated to the correct
693 target precision. PSTR points to the input pointer, which is just
694 after the backslash. LIMIT is how much text we have. WIDE is true
695 if the escape sequence is part of a wide character constant or
696 string literal. Handles all relevant diagnostics. */
697 extern cppchar_t cpp_parse_escape PARAMS ((cpp_reader *,
698 const unsigned char ** pstr,
699 const unsigned char *limit,
700 int wide));
702 /* In cpphash.c */
704 /* Lookup an identifier in the hashtable. Puts the identifier in the
705 table if it is not already there. */
706 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
707 const unsigned char *,
708 unsigned int));
710 typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
711 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
712 cpp_cb, void *));
714 /* In cppmacro.c */
715 extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
716 extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
717 extern unsigned char *cpp_quote_string PARAMS ((unsigned char *,
718 const unsigned char *,
719 unsigned int));
721 /* In cppfiles.c */
722 extern int cpp_included PARAMS ((cpp_reader *, const char *));
723 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
725 /* In cppmain.c */
726 extern void cpp_preprocess_file PARAMS ((cpp_reader *, const char *, FILE *));
728 #ifdef __cplusplus
730 #endif
732 #endif /* ! GCC_CPPLIB_H */