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
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 /* 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;
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;
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
66 OP(CPP_GREATER, ">") /* compare */ \
68 OP(CPP_PLUS, "+") /* math */ \
73 OP(CPP_AND, "&") /* bit ops */ \
76 OP(CPP_RSHIFT, ">>") \
77 OP(CPP_LSHIFT, "<<") \
78 OP(CPP_MIN, "<?") /* extension */ \
82 OP(CPP_AND_AND, "&&") /* logical */ \
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 */ \
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 /* SDCC _asm specific */ \
145 TK(CPP_ASM, SPELL_STRING) /* _asm ... _endasm ; */
156 /* C language kind, used when calling cpp_reader_init. */
157 enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_STDC89, CLK_STDC94, CLK_STDC99,
158 CLK_GNUCXX, CLK_CXX98, CLK_ASM};
160 /* Payload of a NUMBER, STRING, CHAR or COMMENT token. */
164 const unsigned char *text;
167 /* Flags for the cpp_token structure. */
168 #define PREV_WHITE (1 << 0) /* If whitespace before this token. */
169 #define DIGRAPH (1 << 1) /* If it was a digraph. */
170 #define STRINGIFY_ARG (1 << 2) /* If macro argument to be stringified. */
171 #define PASTE_LEFT (1 << 3) /* If on LHS of a ## operator. */
172 #define NAMED_OP (1 << 4) /* C++ named operators. */
173 #define NO_EXPAND (1 << 5) /* Do not macro-expand this token. */
174 #define BOL (1 << 6) /* Token at beginning of line. */
176 /* A preprocessing token. This has been carefully packed and should
177 occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts. */
180 unsigned int line; /* Logical line of first char of token. */
181 unsigned short col; /* Column of first char of token. */
182 ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT; /* token type */
183 unsigned char flags; /* flags - see above */
187 cpp_hashnode *node; /* An identifier. */
188 const cpp_token *source; /* Inherit padding from this token. */
189 struct cpp_string str; /* A string, or number. */
190 unsigned int arg_no; /* Argument no. for a CPP_MACRO_ARG. */
191 unsigned char c; /* Character represented by CPP_OTHER. */
195 /* A type wide enough to hold any multibyte source character.
196 cpplib's character constant interpreter requires an unsigned type.
197 Also, a typedef for the signed equivalent. */
198 #ifndef MAX_WCHAR_TYPE_SIZE
199 # define MAX_WCHAR_TYPE_SIZE WCHAR_TYPE_SIZE
201 #if CHAR_BIT * SIZEOF_INT >= MAX_WCHAR_TYPE_SIZE
202 # define CPPCHAR_SIGNED_T int
204 # if CHAR_BIT * SIZEOF_LONG >= MAX_WCHAR_TYPE_SIZE || !HAVE_LONG_LONG
205 # define CPPCHAR_SIGNED_T long
207 # define CPPCHAR_SIGNED_T long long
210 typedef unsigned CPPCHAR_SIGNED_T cppchar_t;
211 typedef CPPCHAR_SIGNED_T cppchar_signed_t;
213 /* Values for opts.dump_macros.
214 dump_only means inhibit output of the preprocessed text
215 and instead output the definitions of all user-defined
216 macros in a form suitable for use as input to cpp.
217 dump_names means pass #define and the macro name through to output.
218 dump_definitions means pass the whole definition (plus #define) through
220 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
222 /* This structure is nested inside struct cpp_reader, and
223 carries all the options visible to the command line. */
226 /* Name of input and output files. */
227 const char *in_fname;
228 const char *out_fname;
230 /* Characters between tab stops. */
231 unsigned int tabstop;
233 /* Pending options - -D, -U, -A, -I, -ixxx. */
234 struct cpp_pending *pending;
236 /* Search paths for include files. */
237 struct search_path *quote_include; /* "" */
238 struct search_path *bracket_include; /* <> */
240 /* Map between header names and file names, used only on DOS where
241 file names are limited in length. */
242 struct file_name_map_list *map_list;
244 /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
245 in the standard include file directories. */
246 const char *include_prefix;
247 unsigned int include_prefix_len;
249 /* Directory prefix for system include directories in the standard search
253 /* The language we're preprocessing. */
256 /* Non-0 means -v, so print the full set of include dirs. */
257 unsigned char verbose;
259 /* Nonzero means use extra default include directories for C++. */
260 unsigned char cplusplus;
262 /* Nonzero means handle cplusplus style comments */
263 unsigned char cplusplus_comments;
265 /* Nonzero means define __OBJC__, treat @ as a special token, and
266 use the OBJC[PLUS]_INCLUDE_PATH environment variable. */
269 /* Nonzero means don't copy comments into the output file. */
270 unsigned char discard_comments;
272 /* Nonzero means don't copy comments into the output file during
274 unsigned char discard_comments_in_macro_exp;
276 /* Nonzero means process the ISO trigraph sequences. */
277 unsigned char trigraphs;
279 /* Nonzero means process the ISO digraph sequences. */
280 unsigned char digraphs;
282 /* Nonzero means to allow hexadecimal floats and LL suffixes. */
283 unsigned char extended_numbers;
285 /* Nonzero means print names of header files (-H). */
286 unsigned char print_include_names;
288 /* Nonzero means cpp_pedwarn causes a hard error. */
289 unsigned char pedantic_errors;
291 /* Nonzero means don't print warning messages. */
292 unsigned char inhibit_warnings;
294 /* Nonzero means don't suppress warnings from system headers. */
295 unsigned char warn_system_headers;
297 /* Nonzero means don't print error messages. Has no option to
298 select it, but can be set by a user of cpplib (e.g. fix-header). */
299 unsigned char inhibit_errors;
301 /* Nonzero means warn if slash-star appears in a comment. */
302 unsigned char warn_comments;
304 /* Nonzero means warn if there are any trigraphs. */
305 unsigned char warn_trigraphs;
307 /* Nonzero means warn if #import is used. */
308 unsigned char warn_import;
310 /* Nonzero means warn about multicharacter charconsts. */
311 unsigned char warn_multichar;
313 /* Nonzero means warn about various incompatibilities with
315 unsigned char warn_traditional;
317 /* Nonzero means warn about long long numeric constants. */
318 unsigned char warn_long_long;
320 /* Nonzero means warn about text after an #endif (or #else). */
321 unsigned char warn_endif_labels;
323 /* Nonzero means warn about implicit sign changes owing to integer
325 unsigned char warn_num_sign_change;
327 /* Nonzero means turn warnings into errors. */
328 unsigned char warnings_are_errors;
330 /* Nonzero causes output not to be done, but directives such as
331 #define that have side effects are still obeyed. */
332 unsigned char no_output;
334 /* Nonzero means we should look for header.gcc files that remap file
338 /* Nonzero means don't output line number information. */
339 unsigned char no_line_commands;
341 /* Nonzero means -I- has been seen, so don't look for #include "foo"
342 the source-file directory. */
343 unsigned char ignore_srcdir;
345 /* Zero means dollar signs are punctuation. */
346 unsigned char dollars_in_ident;
348 /* Nonzero means warn if undefined identifiers are evaluated in an #if. */
349 unsigned char warn_undef;
351 /* Nonzero means warn of unused macros from the main file. */
352 unsigned char warn_unused_macros;
354 /* Nonzero for the 1999 C Standard, including corrigenda and amendments. */
357 /* Nonzero if we are conforming to a specific C or C++ standard. */
360 /* Nonzero means give all the error messages the ANSI standard requires. */
361 unsigned char pedantic;
363 /* Nonzero means we're looking at already preprocessed code, so don't
364 bother trying to do macro expansion and whatnot. */
365 unsigned char preprocessed;
367 /* Nonzero disables all the standard directories for headers. */
368 unsigned char no_standard_includes;
370 /* Nonzero disables the C++-specific standard directories for headers. */
371 unsigned char no_standard_cplusplus_includes;
373 /* Nonzero means dump macros in some fashion - see above. */
374 unsigned char dump_macros;
376 /* Nonzero means pass #include lines through to the output. */
377 unsigned char dump_includes;
379 /* Print column number in error messages. */
380 unsigned char show_column;
382 /* Nonzero means handle C++ alternate operator names. */
383 unsigned char operator_names;
385 /* True for traditional preprocessing. */
386 unsigned char traditional;
388 /* True if --help, --version or --target-help appeared in the
389 options. Stand-alone CPP should then bail out after option
390 parsing; drivers might want to continue printing help. */
391 unsigned char help_only;
393 /* SDCC abuse by Kevin: allow naked '#' characters in expanded macros
394 * (see _cpp_create_definition in cppmacro.c)
396 unsigned char allow_naked_hash;
398 /* SDCC _asm specific
399 switch _asm block preprocessing on / off */
400 unsigned char preproc_asm;
403 object file exetnsion */
406 /* Dependency generation. */
409 /* Style of header dependencies to generate. */
410 enum {DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM } style;
412 /* Assume missing files are generated files. */
415 /* Generate phony targets for each dependency apart from the first
419 /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
420 unsigned char append;
422 /* If true, no dependency is generated on the main file. */
423 bool ignore_main_file;
425 /* File name which deps are being written to. This is 0 if deps are
426 being written to stdout. */
430 /* Target-specific features set by the front end or client. */
432 /* Precision for target CPP arithmetic, target characters, target
433 ints and target wide characters, respectively. */
434 size_t precision, char_precision, int_precision, wchar_precision;
436 /* True means chars (wide chars) are unsigned. */
437 bool unsigned_char, unsigned_wchar;
439 /* Nonzero means __STDC__ should have the value 0 in system headers. */
440 unsigned char stdc_0_in_system_headers;
446 /* Called when a new line of preprocessed output is started. */
447 void (*line_change) PARAMS ((cpp_reader *, const cpp_token *, int));
448 void (*file_change) PARAMS ((cpp_reader *, const struct line_map *));
449 void (*include) PARAMS ((cpp_reader *, unsigned int,
450 const unsigned char *, const cpp_token *));
451 void (*define) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
452 void (*undef) PARAMS ((cpp_reader *, unsigned int, cpp_hashnode *));
453 void (*ident) PARAMS ((cpp_reader *, unsigned int, const cpp_string *));
454 void (*def_pragma) PARAMS ((cpp_reader *, unsigned int));
455 /* Called when the client has a chance to properly register
456 built-ins with cpp_define() and cpp_assert(). */
457 void (*register_builtins) PARAMS ((cpp_reader *));
460 /* Name under which this program was invoked. */
461 extern const char *progname;
463 /* The structure of a node in the hash table. The hash table has
464 entries for all identifiers: either macros defined by #define
465 commands (type NT_MACRO), assertions created with #assert
466 (NT_ASSERTION), or neither of the above (NT_VOID). Builtin macros
467 like __LINE__ are flagged NODE_BUILTIN. Poisioned identifiers are
468 flagged NODE_POISONED. NODE_OPERATOR (C++ only) indicates an
469 identifier that behaves like an operator such as "xor".
470 NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
471 diagnostic may be required for this node. Currently this only
472 applies to __VA_ARGS__ and poisoned identifiers. */
474 /* Hash node flags. */
475 #define NODE_OPERATOR (1 << 0) /* C++ named operator. */
476 #define NODE_POISONED (1 << 1) /* Poisoned identifier. */
477 #define NODE_BUILTIN (1 << 2) /* Builtin macro. */
478 #define NODE_DIAGNOSTIC (1 << 3) /* Possible diagnostic when lexed. */
479 #define NODE_WARN (1 << 4) /* Warn if redefined or undefined. */
480 #define NODE_DISABLED (1 << 5) /* A disabled macro. */
482 /* Different flavors of hash node. */
485 NT_VOID = 0, /* No definition yet. */
486 NT_MACRO, /* A macro of some form. */
487 NT_ASSERTION /* Predicate for #assert. */
490 /* Different flavors of builtin macro. _Pragma is an operator, but we
491 handle it with the builtin code for efficiency reasons. */
494 BT_SPECLINE = 0, /* `__LINE__' */
495 BT_DATE, /* `__DATE__' */
496 BT_FILE, /* `__FILE__' */
497 BT_BASE_FILE, /* `__BASE_FILE__' */
498 BT_INCLUDE_LEVEL, /* `__INCLUDE_LEVEL__' */
499 BT_TIME, /* `__TIME__' */
500 BT_STDC, /* `__STDC__' */
501 BT_PRAGMA /* `_Pragma' operator */
504 #define CPP_HASHNODE(HNODE) ((cpp_hashnode *) (HNODE))
505 #define HT_NODE(NODE) ((ht_identifier *) (NODE))
506 #define NODE_LEN(NODE) HT_LEN (&(NODE)->ident)
507 #define NODE_NAME(NODE) HT_STR (&(NODE)->ident)
509 /* The common part of an identifier node shared amongst all 3 C front
510 ends. Also used to store CPP identifiers, which are a superset of
511 identifiers in the grammatical sense. */
514 struct ht_identifier ident;
515 unsigned short arg_index; /* Macro argument index. */
516 unsigned char directive_index; /* Index into directive table. */
517 unsigned char rid_code; /* Rid code - for front ends. */
518 ENUM_BITFIELD(node_type) type : 8; /* CPP node type. */
519 unsigned char flags; /* CPP flags. */
523 cpp_macro *macro; /* If a macro. */
524 struct answer *answers; /* Answers to an assertion. */
525 enum cpp_ttype operator; /* Code for a named operator. */
526 enum builtin_type builtin; /* Code for a builtin macro. */
530 /* Call this first to get a handle to pass to other functions. */
531 extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
533 /* Call this to change the selected language standard (e.g. because of
534 command line options). */
535 extern void cpp_set_lang PARAMS ((cpp_reader *, enum c_lang));
537 /* Add a dependency TARGET. Quote it for "make" if QUOTE. Can be
538 called any number of times before cpp_read_main_file(). If no
539 targets have been added before cpp_read_main_file(), then the
540 default target is used. */
541 extern void cpp_add_dependency_target PARAMS ((cpp_reader *,
545 /* Call these to get pointers to the options and callback structures
546 for a given reader. These pointers are good until you call
547 cpp_finish on that reader. You can either edit the callbacks
548 through the pointer returned from cpp_get_callbacks, or set them
549 with cpp_set_callbacks. */
550 extern cpp_options *cpp_get_options PARAMS ((cpp_reader *));
551 extern const struct line_maps *cpp_get_line_maps PARAMS ((cpp_reader *));
552 extern cpp_callbacks *cpp_get_callbacks PARAMS ((cpp_reader *));
553 extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
555 /* Now call cpp_handle_option[s] to handle 1[or more] switches. The
556 return value is the number of arguments used. If
557 cpp_handle_options returns without using all arguments, it couldn't
558 understand the next switch. Options processing is not completed
559 until you call cpp_finish_options. */
560 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
561 extern int cpp_handle_option PARAMS ((cpp_reader *, int, char **));
563 /* This function reads the file, but does not start preprocessing. It
564 returns the name of the original file; this is the same as the
565 input file, except for preprocessed input. This will generate at
566 least one file change callback, and possibly a line change callback
567 too. If there was an error opening the file, it returns NULL.
569 If you want cpplib to manage its own hashtable, pass in a NULL
570 pointer. Otherise you should pass in an initialized hash table
571 that cpplib will share; this technique is used by the C front
573 extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
576 /* Deferred handling of command line options that can generate debug
577 callbacks, such as -D and -imacros. Call this after
578 cpp_read_main_file. The front ends need this separation so they
579 can initialize debug output with the original file name, returned
580 from cpp_read_main_file, before they get debug callbacks. */
581 extern void cpp_finish_options PARAMS ((cpp_reader *));
583 /* Call this to finish preprocessing. If you requested dependency
584 generation, pass an open stream to write the information to,
585 otherwise NULL. It is your responsibility to close the stream.
587 Returns cpp_errors (pfile). */
588 extern int cpp_finish PARAMS ((cpp_reader *, FILE *deps_stream));
590 /* Call this to release the handle at the end of preprocessing. Any
591 use of the handle after this function returns is invalid. Returns
592 cpp_errors (pfile). */
593 extern void cpp_destroy PARAMS ((cpp_reader *));
596 extern unsigned int cpp_errors PARAMS ((cpp_reader *));
598 extern unsigned int cpp_token_len PARAMS ((const cpp_token *));
599 extern unsigned char *cpp_token_as_text PARAMS ((cpp_reader *,
601 extern unsigned char *cpp_spell_token PARAMS ((cpp_reader *, const cpp_token *,
603 extern void cpp_register_pragma PARAMS ((cpp_reader *,
604 const char *, const char *,
605 void (*) PARAMS ((cpp_reader *))));
607 extern int cpp_avoid_paste PARAMS ((cpp_reader *, const cpp_token *,
609 extern const cpp_token *cpp_get_token PARAMS ((cpp_reader *));
610 extern const unsigned char *cpp_macro_definition PARAMS ((cpp_reader *,
611 const cpp_hashnode *));
612 extern void _cpp_backup_tokens PARAMS ((cpp_reader *, unsigned int));
614 /* Evaluate a CPP_CHAR or CPP_WCHAR token. */
616 cpp_interpret_charconst PARAMS ((cpp_reader *, const cpp_token *,
617 unsigned int *, int *));
619 /* Used to register builtins during the register_builtins callback.
620 The text is the same as the command line argument. */
621 extern void cpp_define PARAMS ((cpp_reader *, const char *));
622 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
623 extern void cpp_undef PARAMS ((cpp_reader *, const char *));
624 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
626 extern cpp_buffer *cpp_push_buffer PARAMS ((cpp_reader *,
627 const unsigned char *, size_t,
629 extern int cpp_defined PARAMS ((cpp_reader *, const unsigned char *, int));
631 /* A preprocessing number. Code assumes that any unused high bits of
632 the double integer are set to zero. */
633 typedef unsigned HOST_WIDE_INT cpp_num_part;
634 typedef struct cpp_num cpp_num;
639 bool unsignedp; /* True if value should be treated as unsigned. */
640 bool overflow; /* True if the most recent calculation overflowed. */
643 /* cpplib provides two interfaces for interpretation of preprocessing
646 cpp_classify_number categorizes numeric constants according to
647 their field (integer, floating point, or invalid), radix (decimal,
648 octal, hexadecimal), and type suffixes. */
650 #define CPP_N_CATEGORY 0x000F
651 #define CPP_N_INVALID 0x0000
652 #define CPP_N_INTEGER 0x0001
653 #define CPP_N_FLOATING 0x0002
655 #define CPP_N_WIDTH 0x00F0
656 #define CPP_N_SMALL 0x0010 /* int, float. */
657 #define CPP_N_MEDIUM 0x0020 /* long, double. */
658 #define CPP_N_LARGE 0x0040 /* long long, long double. */
660 #define CPP_N_RADIX 0x0F00
661 #define CPP_N_DECIMAL 0x0100
662 #define CPP_N_HEX 0x0200
663 #define CPP_N_OCTAL 0x0400
665 #define CPP_N_UNSIGNED 0x1000 /* Properties. */
666 #define CPP_N_IMAGINARY 0x2000
668 /* Classify a CPP_NUMBER token. The return value is a combination of
669 the flags from the above sets. */
670 extern unsigned cpp_classify_number PARAMS ((cpp_reader *, const cpp_token *));
672 /* Evaluate a token classified as category CPP_N_INTEGER. */
673 extern cpp_num cpp_interpret_integer PARAMS ((cpp_reader *, const cpp_token *,
676 /* Sign extend a number, with PRECISION significant bits and all
677 others assumed clear, to fill out a cpp_num structure. */
678 cpp_num cpp_num_sign_extend PARAMS ((cpp_num, size_t));
680 /* Diagnostic levels. To get a dianostic without associating a
681 position in the translation unit with it, use cpp_error_with_line
682 with a line number of zero. */
684 /* Warning, an error with -Werror. */
685 #define DL_WARNING 0x00
686 /* Same as DL_WARNING, except it is not suppressed in system headers. */
687 #define DL_WARNING_SYSHDR 0x01
688 /* Warning, an error with -pedantic-errors or -Werror. */
689 #define DL_PEDWARN 0x02
691 #define DL_ERROR 0x03
692 /* An internal consistency check failed. Prints "internal error: ",
693 otherwise the same as DL_ERROR. */
695 /* Extracts a diagnostic level from an int. */
696 #define DL_EXTRACT(l) (l & 0xf)
697 /* Nonzero if a diagnostic level is one of the warnings. */
698 #define DL_WARNING_P(l) (DL_EXTRACT (l) >= DL_WARNING \
699 && DL_EXTRACT (l) <= DL_PEDWARN)
701 /* N.B. The error-message-printer prototypes have not been nicely
702 formatted because exgettext needs to see 'msgid' on the same line
703 as the name of the function in order to work properly. Only the
704 string argument gets a name in an effort to keep the lines from
705 getting ridiculously oversized. */
707 /* Output a diagnostic of some kind. */
708 extern void cpp_error PARAMS ((cpp_reader *, int, const char *msgid, ...))
711 /* Output a diagnostic of severity LEVEL, with "MSG: " preceding the
712 error string of errno. No location is printed. */
713 extern void cpp_errno PARAMS ((cpp_reader *, int level, const char *msg));
715 /* Same as cpp_error, except additionally specifies a position as a
716 (translation unit) physical line and physical column. If the line is
717 zero, then no location is printed. */
718 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, unsigned, unsigned, const char *msgid, ...))
722 extern int cpp_ideq PARAMS ((const cpp_token *,
724 extern void cpp_output_line PARAMS ((cpp_reader *, FILE *));
725 extern void cpp_output_token PARAMS ((const cpp_token *, FILE *));
726 extern const char *cpp_type2name PARAMS ((enum cpp_ttype));
727 /* Returns the value of an escape sequence, truncated to the correct
728 target precision. PSTR points to the input pointer, which is just
729 after the backslash. LIMIT is how much text we have. WIDE is true
730 if the escape sequence is part of a wide character constant or
731 string literal. Handles all relevant diagnostics. */
732 extern cppchar_t cpp_parse_escape PARAMS ((cpp_reader *,
733 const unsigned char ** pstr,
734 const unsigned char *limit,
739 /* Lookup an identifier in the hashtable. Puts the identifier in the
740 table if it is not already there. */
741 extern cpp_hashnode *cpp_lookup PARAMS ((cpp_reader *,
742 const unsigned char *,
745 typedef int (*cpp_cb) PARAMS ((cpp_reader *, cpp_hashnode *, void *));
746 extern void cpp_forall_identifiers PARAMS ((cpp_reader *,
750 extern void cpp_scan_nooutput PARAMS ((cpp_reader *));
751 extern int cpp_sys_macro_p PARAMS ((cpp_reader *));
752 extern unsigned char *cpp_quote_string PARAMS ((unsigned char *,
753 const unsigned char *,
757 extern int cpp_included PARAMS ((cpp_reader *, const char *));
758 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
761 extern void cpp_preprocess_file PARAMS ((cpp_reader *, const char *, FILE *));
767 #endif /* ! GCC_CPPLIB_H */