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_CHAR) /* 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. */
187 unsigned char c; /* Character represented by CPP_OTHER. */
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 #ifndef MAX_WCHAR_TYPE_SIZE
195 # define MAX_WCHAR_TYPE_SIZE WCHAR_TYPE_SIZE
197 #if CHAR_BIT * SIZEOF_INT >= MAX_WCHAR_TYPE_SIZE
198 # define CPPCHAR_SIGNED_T int
200 # if CHAR_BIT * SIZEOF_LONG >= MAX_WCHAR_TYPE_SIZE || !HAVE_LONG_LONG
201 # define CPPCHAR_SIGNED_T long
203 # define CPPCHAR_SIGNED_T long long
206 typedef unsigned CPPCHAR_SIGNED_T cppchar_t;
207 typedef CPPCHAR_SIGNED_T cppchar_signed_t;
209 /* Values for opts.dump_macros.
210 dump_only means inhibit output of the preprocessed text
211 and instead output the definitions of all user-defined
212 macros in a form suitable for use as input to cpp.
213 dump_names means pass #define and the macro name through to output.
214 dump_definitions means pass the whole definition (plus #define) through
216 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
218 /* This structure is nested inside struct cpp_reader, and
219 carries all the options visible to the command line. */
222 /* Characters between tab stops. */
223 unsigned int tabstop;
225 /* Pending options - -D, -U, -A, -I, -ixxx. */
226 struct cpp_pending *pending;
228 /* Map between header names and file names, used only on DOS where
229 file names are limited in length. */
230 struct file_name_map_list *map_list;
232 /* The language we're preprocessing. */
235 /* Nonzero means use extra default include directories for C++. */
236 unsigned char cplusplus;
238 /* Nonzero means handle cplusplus style comments */
239 unsigned char cplusplus_comments;
241 /* Nonzero means define __OBJC__, treat @ as a special token, and
242 use the OBJC[PLUS]_INCLUDE_PATH environment variable. */
245 /* Nonzero means don't copy comments into the output file. */
246 unsigned char discard_comments;
248 /* Nonzero means don't copy comments into the output file during
250 unsigned char discard_comments_in_macro_exp;
252 /* Nonzero means process the ISO trigraph sequences. */
253 unsigned char trigraphs;
255 /* Nonzero means process the ISO digraph sequences. */
256 unsigned char digraphs;
258 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
259 unsigned char extended_numbers;
261 /* Nonzero means print names of header files (-H). */
262 unsigned char print_include_names;
264 /* Nonzero means cpp_pedwarn causes a hard error. */
265 unsigned char pedantic_errors;
267 /* Nonzero means don't print warning messages. */
268 unsigned char inhibit_warnings;
270 /* Nonzero means complain about deprecated features. */
271 unsigned char warn_deprecated;
273 /* Nonzero means don't suppress warnings from system headers. */
274 unsigned char warn_system_headers;
276 /* Nonzero means don't print error messages. Has no option to
277 select it, but can be set by a user of cpplib (e.g. fix-header). */
278 unsigned char inhibit_errors;
280 /* Nonzero means warn if slash-star appears in a comment. */
281 unsigned char warn_comments;
283 /* Nonzero means warn if there are any trigraphs. */
284 unsigned char warn_trigraphs;
286 /* Nonzero means warn if #import is used. */
287 unsigned char warn_import;
289 /* Nonzero means warn about multicharacter charconsts. */
290 unsigned char warn_multichar;
292 /* Nonzero means warn about various incompatibilities with
294 unsigned char warn_traditional;
296 /* Nonzero means warn about long long numeric constants. */
297 unsigned char warn_long_long;
299 /* Nonzero means warn about text after an #endif (or #else). */
300 unsigned char warn_endif_labels;
302 /* Nonzero means warn about implicit sign changes owing to integer
304 unsigned char warn_num_sign_change;
306 /* Nonzero means turn warnings into errors. */
307 unsigned char warnings_are_errors;
309 /* Nonzero causes output not to be done, but directives such as
310 #define that have side effects are still obeyed. */
311 unsigned char no_output;
313 /* Nonzero means we should look for header.gcc files that remap file
317 /* Nonzero means don't output line number information. */
318 unsigned char no_line_commands;
320 /* Zero means dollar signs are punctuation. */
321 unsigned char dollars_in_ident;
323 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
324 unsigned char warn_undef;
326 /* Nonzero means warn of unused macros from the main file. */
327 unsigned char warn_unused_macros;
329 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
332 /* Nonzero if we are conforming to a specific C or C++ standard. */
335 /* Nonzero means give all the error messages the ANSI standard requires. */
336 unsigned char pedantic;
338 /* Nonzero means we're looking at already preprocessed code, so don't
339 bother trying to do macro expansion and whatnot. */
340 unsigned char preprocessed;
342 /* Nonzero means dump macros in some fashion - see above. */
343 unsigned char dump_macros;
345 /* Nonzero means pass #include lines through to the output. */
346 unsigned char dump_includes;
348 /* Print column number in error messages. */
349 unsigned char show_column;
351 /* Nonzero means handle C++ alternate operator names. */
352 unsigned char operator_names;
354 /* True for traditional preprocessing. */
355 unsigned char traditional;
357 /* Dependency generation. */
360 /* Style of header dependencies to generate. */
361 enum {DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM } style;
363 /* Assume missing files are generated files. */
366 /* Generate phony targets for each dependency apart from the first
370 /* If true, no dependency is generated on the main file. */
371 bool ignore_main_file;
374 /* Target-specific features set by the front end or client. */
376 /* Precision for target CPP arithmetic, target characters, target
377 ints and target wide characters, respectively. */
378 size_t precision, char_precision, int_precision, wchar_precision;
380 /* True means chars (wide chars) are unsigned. */
381 bool unsigned_char, unsigned_wchar;
383 /* Nonzero means __STDC__ should have the value 0 in system headers. */
384 unsigned char stdc_0_in_system_headers;
386 /* True to warn about precompiled header files we couldn't use. */
387 bool warn_invalid_pch;
389 /* True if dependencies should be restored from a precompiled header. */
390 bool restore_pch_deps;
396 /* Called when a new line of preprocessed output is started. */
397 void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int));
398 void (*file_change) PARAMS ((cpp_reader *, const struct line_map *));
399 void (*include) PARAMS ((cpp_reader *, unsigned int,
400 const unsigned char *, const cpp_token *));
401 void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
402 void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
403 void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
404 void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
405 void (*simplify_path) PARAMS ((char *));
406 /* Called when the client has a chance to properly register
407 built-ins with cpp_define() and cpp_assert(). */
408 void (*register_builtins) PARAMS ((cpp_reader *));
409 int (*valid_pch) PARAMS ((cpp_reader *, const char *, int));
410 void (*read_pch) PARAMS ((cpp_reader *, const char *, int, const char *));
413 /* Chain of directories to look for include files in. */
416 /* NULL-terminated singly-linked list. */
417 struct cpp_path *next;
419 /* NAME need not be NUL-terminated once inside cpplib. */
423 /* One if a system header, two if a system header that has extern
424 "C" guards for C++. */
427 /* Mapping of file names for this directory for MS-DOS and
428 related platforms. */
429 struct file_name_map *name_map;
431 /* The C front end uses these to recognize duplicated
432 directories in the search path. */
437 /* Name under which this program was invoked. */
438 extern const char *progname;
440 /* The structure of a node in the hash table. The hash table has
441 entries for all identifiers: either macros defined by #define
442 commands (type NT_MACRO), assertions created with #assert
443 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
444 like __LINE__ are flagged NODE_BUILTIN. Poisoned identifiers are
445 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
446 identifier that behaves like an operator such as "xor".
447 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
448 diagnostic may be required for this node. Currently this only
449 applies to __VA_ARGS__ and poisoned identifiers. */
451 /* Hash node flags. */
452 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
453 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
454 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
455 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
456 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
457 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
458 #define NODE_MACRO_ARG (1 << 6) /* Used during #define processing. */
460 /* Different flavors of hash node. */
463 NT_VOID = 0, /* No definition yet. */
464 NT_MACRO, /* A macro of some form. */
465 NT_ASSERTION /* Predicate for #assert. */
468 /* Different flavors of builtin macro. _Pragma is an operator, but we
469 handle it with the builtin code for efficiency reasons. */
472 BT_SPECLINE = 0, /* `__LINE__' */
473 BT_DATE, /* `__DATE__' */
474 BT_FILE, /* `__FILE__' */
475 BT_BASE_FILE, /* `__BASE_FILE__' */
476 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
477 BT_TIME, /* `__TIME__' */
478 BT_STDC, /* `__STDC__' */
479 BT_PRAGMA /* `_Pragma' operator */
482 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
483 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
484 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
485 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
487 /* The common part of an identifier node shared amongst all 3 C front
488 ends. Also used to store CPP identifiers, which are a superset of
489 identifiers in the grammatical sense. */
490 struct cpp_hashnode GTY(())
492 struct ht_identifier ident;
493 unsigned int is_directive : 1;
494 unsigned int directive_index : 7; /* If is_directive,
495 then index into directive table.
496 Otherwise, a NODE_OPERATOR. */
497 unsigned char rid_code; /* Rid code - for front ends. */
498 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
499 unsigned char flags; /* CPP flags. */
501 union _cpp_hashnode_value
504 cpp_macro * GTY((skip (""))) macro;
505 /* Answers to an assertion. */
506 struct answer * GTY ((skip (""))) answers;
507 /* Code for a builtin macro. */
508 enum builtin_type GTY ((tag ("1"))) builtin;
509 /* Macro argument index. */
510 unsigned short GTY ((tag ("0"))) arg_index;
511 } GTY ((desc ("0"))) value;
514 /* Call this first to get a handle to pass to other functions. */
515 extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
517 /* Call this to change the selected language standard (e.g. because of
518 command line options). */
519 extern void cpp_set_lang PARAMS ((cpp_reader *, enum c_lang));
521 /* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
522 called any number of times before cpp_read_main_file(). If no
523 targets have been added before cpp_read_main_file(), then the
524 default target is used. */
525 extern void cpp_add_dependency_target PARAMS ((cpp_reader *,
529 /* Set the include paths. */
530 extern void cpp_set_include_chains PARAMS ((cpp_reader *, cpp_path *,
533 /* Call these to get pointers to the options and callback structures
534 for a given reader. These pointers are good until you call
535 cpp_finish on that reader. You can either edit the callbacks
536 through the pointer returned from cpp_get_callbacks, or set them
537 with cpp_set_callbacks. */
538 extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
539 extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
540 extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
541 extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
543 /* Now call cpp_handle_option to handle 1 switch. The return value is
544 the number of arguments used. Options processing is not completed
545 until you call cpp_finish_options. */
546 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
548 /* This function reads the file, but does not start preprocessing. It
549 returns the name of the original file; this is the same as the
550 input file, except for preprocessed input. This will generate at
551 least one file change callback, and possibly a line change callback
552 too. If there was an error opening the file, it returns NULL.
554 If you want cpplib to manage its own hashtable, pass in a NULL
555 pointer. Otherwise you should pass in an initialized hash table
556 that cpplib will share; this technique is used by the C front
558 extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
561 /* Deferred handling of command line options that can generate debug
562 callbacks, such as -D and -imacros. Call this after
563 cpp_read_main_file. The front ends need this separation so they
564 can initialize debug output with the original file name, returned
565 from cpp_read_main_file, before they get debug callbacks. */
566 extern void cpp_finish_options PARAMS ((cpp_reader *));
568 /* Call this to finish preprocessing. If you requested dependency
569 generation, pass an open stream to write the information to,
570 otherwise NULL. It is your responsibility to close the stream.
572 Returns cpp_errors (pfile). */
573 extern int cpp_finish PARAMS ((cpp_reader *, FILE *deps_stream));
575 /* Call this to release the handle at the end of preprocessing. Any
576 use of the handle after this function returns is invalid. Returns
577 cpp_errors (pfile). */
578 extern void cpp_destroy PARAMS ((cpp_reader *));
581 extern unsigned int cpp_errors PARAMS ((cpp_reader *));
583 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
584 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
586 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
588 extern void cpp_register_pragma PARAMS ((cpp_reader *,
589 const char *, const char *,
590 void (*) PARAMS ((cpp_reader *))));
592 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
594 extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *));
595 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
596 const cpp_hashnode *));
597 extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int));
599 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
601 cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
602 unsigned int *, int *));
604 /* Used to register builtins during the register_builtins callback.
605 The text is the same as the command line argument. */
606 extern void cpp_define PARAMS ((cpp_reader *, const char *));
607 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
608 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
609 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
611 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
612 const unsigned char *, size_t,
614 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
616 /* A preprocessing number. Code assumes that any unused high bits of
617 the double integer are set to zero. */
618 typedef unsigned HOST_WIDE_INT cpp_num_part;
619 typedef struct cpp_num cpp_num;
624 bool unsignedp; /* True if value should be treated as unsigned. */
625 bool overflow; /* True if the most recent calculation overflowed. */
628 /* cpplib provides two interfaces for interpretation of preprocessing
631 cpp_classify_number categorizes numeric constants according to
632 their field (integer, floating point, or invalid), radix (decimal,
633 octal, hexadecimal), and type suffixes. */
635 #define CPP_N_CATEGORY 0x000F
636 #define CPP_N_INVALID 0x0000
637 #define CPP_N_INTEGER 0x0001
638 #define CPP_N_FLOATING 0x0002
640 #define CPP_N_WIDTH 0x00F0
641 #define CPP_N_SMALL 0x0010 /* int, float. */
642 #define CPP_N_MEDIUM 0x0020 /* long, double. */
643 #define CPP_N_LARGE 0x0040 /* long long, long double. */
645 #define CPP_N_RADIX 0x0F00
646 #define CPP_N_DECIMAL 0x0100
647 #define CPP_N_HEX 0x0200
648 #define CPP_N_OCTAL 0x0400
650 #define CPP_N_UNSIGNED 0x1000 /* Properties. */
651 #define CPP_N_IMAGINARY 0x2000
653 /* Classify a CPP_NUMBER token. The return value is a combination of
654 the flags from the above sets. */
655 extern unsigned cpp_classify_number PARAMS ((cpp_reader *, const cpp_token *));
657 /* Evaluate a token classified as category CPP_N_INTEGER. */
658 extern cpp_num cpp_interpret_integer PARAMS ((cpp_reader *, const cpp_token *,
661 /* Sign extend a number, with PRECISION significant bits and all
662 others assumed clear, to fill out a cpp_num structure. */
663 cpp_num cpp_num_sign_extend PARAMS ((cpp_num, size_t));
665 /* Diagnostic levels. To get a diagnostic without associating a
666 position in the translation unit with it, use cpp_error_with_line
667 with a line number of zero. */
669 /* Warning, an error with -Werror. */
670 #define DL_WARNING 0x00
671 /* Same as DL_WARNING, except it is not suppressed in system headers. */
672 #define DL_WARNING_SYSHDR 0x01
673 /* Warning, an error with -pedantic-errors or -Werror. */
674 #define DL_PEDWARN 0x02
676 #define DL_ERROR 0x03
677 /* An internal consistency check failed. Prints "internal error: ",
678 otherwise the same as DL_ERROR. */
680 /* Extracts a diagnostic level from an int. */
681 #define DL_EXTRACT(l) (l & 0xf)
682 /* Nonzero if a diagnostic level is one of the warnings. */
683 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
684 && DL_EXTRACT (l) <= DL_PEDWARN)
686 /* N.B. The error-message-printer prototypes have not been nicely
687 formatted because exgettext needs to see 'msgid' on the same line
688 as the name of the function in order to work properly. Only the
689 string argument gets a name in an effort to keep the lines from
690 getting ridiculously oversized. */
692 /* Output a diagnostic of some kind. */
693 extern void cpp_error PARAMS ((cpp_reader *, int, const char *msgid, ...))
696 /* Output a diagnostic of severity LEVEL, with "MSG: " preceding the
697 error string of errno. No location is printed. */
698 extern void cpp_errno PARAMS ((cpp_reader *, int level, const char *msg));
700 /* Same as cpp_error, except additionally specifies a position as a
701 (translation unit) physical line and physical column. If the line is
702 zero, then no location is printed. */
703 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, unsigned, unsigned, const char *msgid, ...))
707 extern int cpp_ideq PARAMS ((const cpp_token *,
709 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
710 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
711 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
712 /* Returns the value of an escape sequence, truncated to the correct
713 target precision. PSTR points to the input pointer, which is just
714 after the backslash. LIMIT is how much text we have. WIDE is true
715 if the escape sequence is part of a wide character constant or
716 string literal. Handles all relevant diagnostics. */
717 extern cppchar_t cpp_parse_escape PARAMS ((cpp_reader *,
718 const unsigned char ** pstr,
719 const unsigned char *limit,
724 /* Lookup an identifier in the hashtable. Puts the identifier in the
725 table if it is not already there. */
726 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
727 const unsigned char *,
730 typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
731 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
735 extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
736 extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
737 extern unsigned char *cpp_quote_string PARAMS ((unsigned char *,
738 const unsigned char *,
742 extern int cpp_included PARAMS ((cpp_reader *, const char *));
743 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
746 struct save_macro_data;
747 extern int cpp_save_state PARAMS ((cpp_reader *, FILE *));
748 extern int cpp_write_pch_deps PARAMS ((cpp_reader *, FILE *));
749 extern int cpp_write_pch_state PARAMS ((cpp_reader *, FILE *));
750 extern int cpp_valid_state PARAMS ((cpp_reader *, const char *, int));
751 extern void cpp_prepare_state PARAMS ((cpp_reader *,
752 struct save_macro_data **));
753 extern int cpp_read_state PARAMS ((cpp_reader *, const char *, FILE *,
754 struct save_macro_data *));
757 extern void cpp_preprocess_file PARAMS ((cpp_reader *, const char *, FILE *));
763 #endif /* ! GCC_CPPLIB_H */