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1 35 ultra_embe
/* Definitions for CPP library.
2
   Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3
   2004, 2005, 2007, 2008, 2009, 2010, 2011, 2012
4
   Free Software Foundation, Inc.
5
   Written by Per Bothner, 1994-95.
6
 
7
This program is free software; you can redistribute it and/or modify it
8
under the terms of the GNU General Public License as published by the
9
Free Software Foundation; either version 3, or (at your option) any
10
later version.
11
 
12
This program is distributed in the hope that it will be useful,
13
but WITHOUT ANY WARRANTY; without even the implied warranty of
14
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15
GNU General Public License for more details.
16
 
17
You should have received a copy of the GNU General Public License
18
along with this program; see the file COPYING3.  If not see
19
<http://www.gnu.org/licenses/>.
20
 
21
 In other words, you are welcome to use, share and improve this program.
22
 You are forbidden to forbid anyone else to use, share and improve
23
 what you give them.   Help stamp out software-hoarding!  */
24
#ifndef LIBCPP_CPPLIB_H
25
#define LIBCPP_CPPLIB_H
26
 
27
#include <sys/types.h>
28
#include "symtab.h"
29
#include "line-map.h"
30
 
31
typedef struct cpp_reader cpp_reader;
32
typedef struct cpp_buffer cpp_buffer;
33
typedef struct cpp_options cpp_options;
34
typedef struct cpp_token cpp_token;
35
typedef struct cpp_string cpp_string;
36
typedef struct cpp_hashnode cpp_hashnode;
37
typedef struct cpp_macro cpp_macro;
38
typedef struct cpp_callbacks cpp_callbacks;
39
typedef struct cpp_dir cpp_dir;
40
 
41
struct answer;
42
struct _cpp_file;
43
 
44
/* The first three groups, apart from '=', can appear in preprocessor
45
   expressions (+= and -= are used to indicate unary + and - resp.).
46
   This allows a lookup table to be implemented in _cpp_parse_expr.
47
 
48
   The first group, to CPP_LAST_EQ, can be immediately followed by an
49
   '='.  The lexer needs operators ending in '=', like ">>=", to be in
50
   the same order as their counterparts without the '=', like ">>".
51
 
52
   See the cpp_operator table optab in expr.c if you change the order or
53
   add or remove anything in the first group.  */
54
 
55
#define TTYPE_TABLE                                                     \
56
  OP(EQ,                "=")                                            \
57
  OP(NOT,               "!")                                            \
58
  OP(GREATER,           ">")    /* compare */                           \
59
  OP(LESS,              "<")                                            \
60
  OP(PLUS,              "+")    /* math */                              \
61
  OP(MINUS,             "-")                                            \
62
  OP(MULT,              "*")                                            \
63
  OP(DIV,               "/")                                            \
64
  OP(MOD,               "%")                                            \
65
  OP(AND,               "&")    /* bit ops */                           \
66
  OP(OR,                "|")                                            \
67
  OP(XOR,               "^")                                            \
68
  OP(RSHIFT,            ">>")                                           \
69
  OP(LSHIFT,            "<<")                                           \
70
                                                                        \
71
  OP(COMPL,             "~")                                            \
72
  OP(AND_AND,           "&&")   /* logical */                           \
73
  OP(OR_OR,             "||")                                           \
74
  OP(QUERY,             "?")                                            \
75
  OP(COLON,             ":")                                            \
76
  OP(COMMA,             ",")    /* grouping */                          \
77
  OP(OPEN_PAREN,        "(")                                            \
78
  OP(CLOSE_PAREN,       ")")                                            \
79
  TK(EOF,               NONE)                                           \
80
  OP(EQ_EQ,             "==")   /* compare */                           \
81
  OP(NOT_EQ,            "!=")                                           \
82
  OP(GREATER_EQ,        ">=")                                           \
83
  OP(LESS_EQ,           "<=")                                           \
84
                                                                        \
85
  /* These two are unary + / - in preprocessor expressions.  */         \
86
  OP(PLUS_EQ,           "+=")   /* math */                              \
87
  OP(MINUS_EQ,          "-=")                                           \
88
                                                                        \
89
  OP(MULT_EQ,           "*=")                                           \
90
  OP(DIV_EQ,            "/=")                                           \
91
  OP(MOD_EQ,            "%=")                                           \
92
  OP(AND_EQ,            "&=")   /* bit ops */                           \
93
  OP(OR_EQ,             "|=")                                           \
94
  OP(XOR_EQ,            "^=")                                           \
95
  OP(RSHIFT_EQ,         ">>=")                                          \
96
  OP(LSHIFT_EQ,         "<<=")                                          \
97
  /* Digraphs together, beginning with CPP_FIRST_DIGRAPH.  */           \
98
  OP(HASH,              "#")    /* digraphs */                          \
99
  OP(PASTE,             "##")                                           \
100
  OP(OPEN_SQUARE,       "[")                                            \
101
  OP(CLOSE_SQUARE,      "]")                                            \
102
  OP(OPEN_BRACE,        "{")                                            \
103
  OP(CLOSE_BRACE,       "}")                                            \
104
  /* The remainder of the punctuation.  Order is not significant.  */   \
105
  OP(SEMICOLON,         ";")    /* structure */                         \
106
  OP(ELLIPSIS,          "...")                                          \
107
  OP(PLUS_PLUS,         "++")   /* increment */                         \
108
  OP(MINUS_MINUS,       "--")                                           \
109
  OP(DEREF,             "->")   /* accessors */                         \
110
  OP(DOT,               ".")                                            \
111
  OP(SCOPE,             "::")                                           \
112
  OP(DEREF_STAR,        "->*")                                          \
113
  OP(DOT_STAR,          ".*")                                           \
114
  OP(ATSIGN,            "@")  /* used in Objective-C */                 \
115
                                                                        \
116
  TK(NAME,              IDENT)   /* word */                             \
117
  TK(AT_NAME,           IDENT)   /* @word - Objective-C */              \
118
  TK(NUMBER,            LITERAL) /* 34_be+ta  */                        \
119
                                                                        \
120
  TK(CHAR,              LITERAL) /* 'char' */                           \
121
  TK(WCHAR,             LITERAL) /* L'char' */                          \
122
  TK(CHAR16,            LITERAL) /* u'char' */                          \
123
  TK(CHAR32,            LITERAL) /* U'char' */                          \
124
  TK(OTHER,             LITERAL) /* stray punctuation */                \
125
                                                                        \
126
  TK(STRING,            LITERAL) /* "string" */                         \
127
  TK(WSTRING,           LITERAL) /* L"string" */                        \
128
  TK(STRING16,          LITERAL) /* u"string" */                        \
129
  TK(STRING32,          LITERAL) /* U"string" */                        \
130
  TK(UTF8STRING,        LITERAL) /* u8"string" */                       \
131
  TK(OBJC_STRING,       LITERAL) /* @"string" - Objective-C */          \
132
  TK(HEADER_NAME,       LITERAL) /* <stdio.h> in #include */            \
133
                                                                        \
134
  TK(CHAR_USERDEF,      LITERAL) /* 'char'_suffix - C++-0x */           \
135
  TK(WCHAR_USERDEF,     LITERAL) /* L'char'_suffix - C++-0x */          \
136
  TK(CHAR16_USERDEF,    LITERAL) /* u'char'_suffix - C++-0x */          \
137
  TK(CHAR32_USERDEF,    LITERAL) /* U'char'_suffix - C++-0x */          \
138
  TK(STRING_USERDEF,    LITERAL) /* "string"_suffix - C++-0x */         \
139
  TK(WSTRING_USERDEF,   LITERAL) /* L"string"_suffix - C++-0x */        \
140
  TK(STRING16_USERDEF,  LITERAL) /* u"string"_suffix - C++-0x */        \
141
  TK(STRING32_USERDEF,  LITERAL) /* U"string"_suffix - C++-0x */        \
142
  TK(UTF8STRING_USERDEF,LITERAL) /* u8"string"_suffix - C++-0x */       \
143
                                                                        \
144
  TK(COMMENT,           LITERAL) /* Only if output comments.  */        \
145
                                 /* SPELL_LITERAL happens to DTRT.  */  \
146
  TK(MACRO_ARG,         NONE)    /* Macro argument.  */                 \
147
  TK(PRAGMA,            NONE)    /* Only for deferred pragmas.  */      \
148
  TK(PRAGMA_EOL,        NONE)    /* End-of-line for deferred pragmas.  */ \
149
  TK(PADDING,           NONE)    /* Whitespace for -E.  */
150
 
151
#define OP(e, s) CPP_ ## e,
152
#define TK(e, s) CPP_ ## e,
153
enum cpp_ttype
154
{
155
  TTYPE_TABLE
156
  N_TTYPES,
157
 
158
  /* Positions in the table.  */
159
  CPP_LAST_EQ        = CPP_LSHIFT,
160
  CPP_FIRST_DIGRAPH  = CPP_HASH,
161
  CPP_LAST_PUNCTUATOR= CPP_ATSIGN,
162
  CPP_LAST_CPP_OP    = CPP_LESS_EQ
163
};
164
#undef OP
165
#undef TK
166
 
167
/* C language kind, used when calling cpp_create_reader.  */
168
enum c_lang {CLK_GNUC89 = 0, CLK_GNUC99, CLK_GNUC11,
169
             CLK_STDC89, CLK_STDC94, CLK_STDC99, CLK_STDC11,
170
             CLK_GNUCXX, CLK_CXX98, CLK_GNUCXX11, CLK_CXX11, CLK_ASM};
171
 
172
/* Payload of a NUMBER, STRING, CHAR or COMMENT token.  */
173
struct GTY(()) cpp_string {
174
  unsigned int len;
175
  const unsigned char *text;
176
};
177
 
178
/* Flags for the cpp_token structure.  */
179
#define PREV_WHITE      (1 << 0) /* If whitespace before this token.  */
180
#define DIGRAPH         (1 << 1) /* If it was a digraph.  */
181
#define STRINGIFY_ARG   (1 << 2) /* If macro argument to be stringified.  */
182
#define PASTE_LEFT      (1 << 3) /* If on LHS of a ## operator.  */
183
#define NAMED_OP        (1 << 4) /* C++ named operators.  */
184
#define NO_EXPAND       (1 << 5) /* Do not macro-expand this token.  */
185
#define BOL             (1 << 6) /* Token at beginning of line.  */
186
#define PURE_ZERO       (1 << 7) /* Single 0 digit, used by the C++ frontend,
187
                                    set in c-lex.c.  */
188
#define SP_DIGRAPH      (1 << 8) /* # or ## token was a digraph.  */
189
#define SP_PREV_WHITE   (1 << 9) /* If whitespace before a ##
190
                                    operator, or before this token
191
                                    after a # operator.  */
192
 
193
/* Specify which field, if any, of the cpp_token union is used.  */
194
 
195
enum cpp_token_fld_kind {
196
  CPP_TOKEN_FLD_NODE,
197
  CPP_TOKEN_FLD_SOURCE,
198
  CPP_TOKEN_FLD_STR,
199
  CPP_TOKEN_FLD_ARG_NO,
200
  CPP_TOKEN_FLD_TOKEN_NO,
201
  CPP_TOKEN_FLD_PRAGMA,
202
  CPP_TOKEN_FLD_NONE
203
};
204
 
205
/* A macro argument in the cpp_token union.  */
206
struct GTY(()) cpp_macro_arg {
207
  /* Argument number.  */
208
  unsigned int arg_no;
209
};
210
 
211
/* An identifier in the cpp_token union.  */
212
struct GTY(()) cpp_identifier {
213
  /* The canonical (UTF-8) spelling of the identifier.  */
214
  cpp_hashnode *
215
    GTY ((nested_ptr (union tree_node,
216
                "%h ? CPP_HASHNODE (GCC_IDENT_TO_HT_IDENT (%h)) : NULL",
217
                        "%h ? HT_IDENT_TO_GCC_IDENT (HT_NODE (%h)) : NULL")))
218
       node;
219
};
220
 
221
/* A preprocessing token.  This has been carefully packed and should
222
   occupy 16 bytes on 32-bit hosts and 24 bytes on 64-bit hosts.  */
223
struct GTY(()) cpp_token {
224
  source_location src_loc;      /* Location of first char of token.  */
225
  ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT;  /* token type */
226
  unsigned short flags;         /* flags - see above */
227
 
228
  union cpp_token_u
229
  {
230
    /* An identifier.  */
231
    struct cpp_identifier GTY ((tag ("CPP_TOKEN_FLD_NODE"))) node;
232
 
233
    /* Inherit padding from this token.  */
234
    cpp_token * GTY ((tag ("CPP_TOKEN_FLD_SOURCE"))) source;
235
 
236
    /* A string, or number.  */
237
    struct cpp_string GTY ((tag ("CPP_TOKEN_FLD_STR"))) str;
238
 
239
    /* Argument no. for a CPP_MACRO_ARG.  */
240
    struct cpp_macro_arg GTY ((tag ("CPP_TOKEN_FLD_ARG_NO"))) macro_arg;
241
 
242
    /* Original token no. for a CPP_PASTE (from a sequence of
243
       consecutive paste tokens in a macro expansion).  */
244
    unsigned int GTY ((tag ("CPP_TOKEN_FLD_TOKEN_NO"))) token_no;
245
 
246
    /* Caller-supplied identifier for a CPP_PRAGMA.  */
247
    unsigned int GTY ((tag ("CPP_TOKEN_FLD_PRAGMA"))) pragma;
248
  } GTY ((desc ("cpp_token_val_index (&%1)"))) val;
249
};
250
 
251
/* Say which field is in use.  */
252
extern enum cpp_token_fld_kind cpp_token_val_index (cpp_token *tok);
253
 
254
/* A type wide enough to hold any multibyte source character.
255
   cpplib's character constant interpreter requires an unsigned type.
256
   Also, a typedef for the signed equivalent.
257
   The width of this type is capped at 32 bits; there do exist targets
258
   where wchar_t is 64 bits, but only in a non-default mode, and there
259
   would be no meaningful interpretation for a wchar_t value greater
260
   than 2^32 anyway -- the widest wide-character encoding around is
261
   ISO 10646, which stops at 2^31.  */
262
#if CHAR_BIT * SIZEOF_INT >= 32
263
# define CPPCHAR_SIGNED_T int
264
#elif CHAR_BIT * SIZEOF_LONG >= 32
265
# define CPPCHAR_SIGNED_T long
266
#else
267
# error "Cannot find a least-32-bit signed integer type"
268
#endif
269
typedef unsigned CPPCHAR_SIGNED_T cppchar_t;
270
typedef CPPCHAR_SIGNED_T cppchar_signed_t;
271
 
272
/* Style of header dependencies to generate.  */
273
enum cpp_deps_style { DEPS_NONE = 0, DEPS_USER, DEPS_SYSTEM };
274
 
275
/* The possible normalization levels, from most restrictive to least.  */
276
enum cpp_normalize_level {
277
  /* In NFKC.  */
278
  normalized_KC = 0,
279
  /* In NFC.  */
280
  normalized_C,
281
  /* In NFC, except for subsequences where being in NFC would make
282
     the identifier invalid.  */
283
  normalized_identifier_C,
284
  /* Not normalized at all.  */
285
  normalized_none
286
};
287
 
288
/* This structure is nested inside struct cpp_reader, and
289
   carries all the options visible to the command line.  */
290
struct cpp_options
291
{
292
  /* Characters between tab stops.  */
293
  unsigned int tabstop;
294
 
295
  /* The language we're preprocessing.  */
296
  enum c_lang lang;
297
 
298
  /* Nonzero means use extra default include directories for C++.  */
299
  unsigned char cplusplus;
300
 
301
  /* Nonzero means handle cplusplus style comments.  */
302
  unsigned char cplusplus_comments;
303
 
304
  /* Nonzero means define __OBJC__, treat @ as a special token, use
305
     the OBJC[PLUS]_INCLUDE_PATH environment variable, and allow
306
     "#import".  */
307
  unsigned char objc;
308
 
309
  /* Nonzero means don't copy comments into the output file.  */
310
  unsigned char discard_comments;
311
 
312
  /* Nonzero means don't copy comments into the output file during
313
     macro expansion.  */
314
  unsigned char discard_comments_in_macro_exp;
315
 
316
  /* Nonzero means process the ISO trigraph sequences.  */
317
  unsigned char trigraphs;
318
 
319
  /* Nonzero means process the ISO digraph sequences.  */
320
  unsigned char digraphs;
321
 
322
  /* Nonzero means to allow hexadecimal floats and LL suffixes.  */
323
  unsigned char extended_numbers;
324
 
325
  /* Nonzero means process u/U prefix literals (UTF-16/32).  */
326
  unsigned char uliterals;
327
 
328
  /* Nonzero means process r/R raw strings.  If this is set, uliterals
329
     must be set as well.  */
330
  unsigned char rliterals;
331
 
332
  /* Nonzero means print names of header files (-H).  */
333
  unsigned char print_include_names;
334
 
335
  /* Nonzero means complain about deprecated features.  */
336
  unsigned char cpp_warn_deprecated;
337
 
338
  /* Nonzero means warn if slash-star appears in a comment.  */
339
  unsigned char warn_comments;
340
 
341
  /* Nonzero means warn if a user-supplied include directory does not
342
     exist.  */
343
  unsigned char warn_missing_include_dirs;
344
 
345
  /* Nonzero means warn if there are any trigraphs.  */
346
  unsigned char warn_trigraphs;
347
 
348
  /* Nonzero means warn about multicharacter charconsts.  */
349
  unsigned char warn_multichar;
350
 
351
  /* Nonzero means warn about various incompatibilities with
352
     traditional C.  */
353
  unsigned char cpp_warn_traditional;
354
 
355
  /* Nonzero means warn about long long numeric constants.  */
356
  unsigned char cpp_warn_long_long;
357
 
358
  /* Nonzero means warn about text after an #endif (or #else).  */
359
  unsigned char warn_endif_labels;
360
 
361
  /* Nonzero means warn about implicit sign changes owing to integer
362
     promotions.  */
363
  unsigned char warn_num_sign_change;
364
 
365
  /* Zero means don't warn about __VA_ARGS__ usage in c89 pedantic mode.
366
     Presumably the usage is protected by the appropriate #ifdef.  */
367
  unsigned char warn_variadic_macros;
368
 
369
  /* Nonzero means warn about builtin macros that are redefined or
370
     explicitly undefined.  */
371
  unsigned char warn_builtin_macro_redefined;
372
 
373
  /* Nonzero means we should look for header.gcc files that remap file
374
     names.  */
375
  unsigned char remap;
376
 
377
  /* Zero means dollar signs are punctuation.  */
378
  unsigned char dollars_in_ident;
379
 
380
  /* Nonzero means UCNs are accepted in identifiers.  */
381
  unsigned char extended_identifiers;
382
 
383
  /* True if we should warn about dollars in identifiers or numbers
384
     for this translation unit.  */
385
  unsigned char warn_dollars;
386
 
387
  /* Nonzero means warn if undefined identifiers are evaluated in an #if.  */
388
  unsigned char warn_undef;
389
 
390
  /* Nonzero means warn of unused macros from the main file.  */
391
  unsigned char warn_unused_macros;
392
 
393
  /* Nonzero for the 1999 C Standard, including corrigenda and amendments.  */
394
  unsigned char c99;
395
 
396
  /* Nonzero if we are conforming to a specific C or C++ standard.  */
397
  unsigned char std;
398
 
399
  /* Nonzero means give all the error messages the ANSI standard requires.  */
400
  unsigned char cpp_pedantic;
401
 
402
  /* Nonzero means we're looking at already preprocessed code, so don't
403
     bother trying to do macro expansion and whatnot.  */
404
  unsigned char preprocessed;
405
 
406
  /* Nonzero means we are going to emit debugging logs during
407
     preprocessing.  */
408
  unsigned char debug;
409
 
410
  /* Nonzero means we are tracking locations of tokens involved in
411
     macro expansion. 1 Means we track the location in degraded mode
412
     where we do not track locations of tokens resulting from the
413
     expansion of arguments of function-like macro.  2 Means we do
414
     track all macro expansions. This last option is the one that
415
     consumes the highest amount of memory.  */
416
  unsigned char track_macro_expansion;
417
 
418
  /* Nonzero means handle C++ alternate operator names.  */
419
  unsigned char operator_names;
420
 
421
  /* Nonzero means warn about use of C++ alternate operator names.  */
422
  unsigned char warn_cxx_operator_names;
423
 
424
  /* True for traditional preprocessing.  */
425
  unsigned char traditional;
426
 
427
  /* Nonzero for C++ 2011 Standard user-defnied literals.  */
428
  unsigned char user_literals;
429
 
430
  /* Nonzero means warn when a string or character literal is followed by a
431
     ud-suffix which does not beging with an underscore.  */
432
  unsigned char warn_literal_suffix;
433
 
434
  /* Nonzero means interpret imaginary, fixed-point, or other gnu extension
435
     literal number suffixes as user-defined literal number suffixes.  */
436
  unsigned char ext_numeric_literals;
437
 
438
  /* Holds the name of the target (execution) character set.  */
439
  const char *narrow_charset;
440
 
441
  /* Holds the name of the target wide character set.  */
442
  const char *wide_charset;
443
 
444
  /* Holds the name of the input character set.  */
445
  const char *input_charset;
446
 
447
  /* The minimum permitted level of normalization before a warning
448
     is generated.  */
449
  enum cpp_normalize_level warn_normalize;
450
 
451
  /* True to warn about precompiled header files we couldn't use.  */
452
  bool warn_invalid_pch;
453
 
454
  /* True if dependencies should be restored from a precompiled header.  */
455
  bool restore_pch_deps;
456
 
457
  /* Dependency generation.  */
458
  struct
459
  {
460
    /* Style of header dependencies to generate.  */
461
    enum cpp_deps_style style;
462
 
463
    /* Assume missing files are generated files.  */
464
    bool missing_files;
465
 
466
    /* Generate phony targets for each dependency apart from the first
467
       one.  */
468
    bool phony_targets;
469
 
470
    /* If true, no dependency is generated on the main file.  */
471
    bool ignore_main_file;
472
 
473
    /* If true, intend to use the preprocessor output (e.g., for compilation)
474
       in addition to the dependency info.  */
475
    bool need_preprocessor_output;
476
  } deps;
477
 
478
  /* Target-specific features set by the front end or client.  */
479
 
480
  /* Precision for target CPP arithmetic, target characters, target
481
     ints and target wide characters, respectively.  */
482
  size_t precision, char_precision, int_precision, wchar_precision;
483
 
484
  /* True means chars (wide chars) are unsigned.  */
485
  bool unsigned_char, unsigned_wchar;
486
 
487
  /* True if the most significant byte in a word has the lowest
488
     address in memory.  */
489
  bool bytes_big_endian;
490
 
491
  /* Nonzero means __STDC__ should have the value 0 in system headers.  */
492
  unsigned char stdc_0_in_system_headers;
493
 
494
  /* True disables tokenization outside of preprocessing directives. */
495
  bool directives_only;
496
 
497
  /* True enables canonicalization of system header file paths. */
498
  bool canonical_system_headers;
499
};
500
 
501
/* Callback for header lookup for HEADER, which is the name of a
502
   source file.  It is used as a method of last resort to find headers
503
   that are not otherwise found during the normal include processing.
504
   The return value is the malloced name of a header to try and open,
505
   if any, or NULL otherwise.  This callback is called only if the
506
   header is otherwise unfound.  */
507
typedef const char *(*missing_header_cb)(cpp_reader *, const char *header, cpp_dir **);
508
 
509
/* Call backs to cpplib client.  */
510
struct cpp_callbacks
511
{
512
  /* Called when a new line of preprocessed output is started.  */
513
  void (*line_change) (cpp_reader *, const cpp_token *, int);
514
 
515
  /* Called when switching to/from a new file.
516
     The line_map is for the new file.  It is NULL if there is no new file.
517
     (In C this happens when done with <built-in>+<command line> and also
518
     when done with a main file.)  This can be used for resource cleanup.  */
519
  void (*file_change) (cpp_reader *, const struct line_map *);
520
 
521
  void (*dir_change) (cpp_reader *, const char *);
522
  void (*include) (cpp_reader *, source_location, const unsigned char *,
523
                   const char *, int, const cpp_token **);
524
  void (*define) (cpp_reader *, source_location, cpp_hashnode *);
525
  void (*undef) (cpp_reader *, source_location, cpp_hashnode *);
526
  void (*ident) (cpp_reader *, source_location, const cpp_string *);
527
  void (*def_pragma) (cpp_reader *, source_location);
528
  int (*valid_pch) (cpp_reader *, const char *, int);
529
  void (*read_pch) (cpp_reader *, const char *, int, const char *);
530
  missing_header_cb missing_header;
531
 
532
  /* Context-sensitive macro support.  Returns macro (if any) that should
533
     be expanded.  */
534
  cpp_hashnode * (*macro_to_expand) (cpp_reader *, const cpp_token *);
535
 
536
  /* Called to emit a diagnostic.  This callback receives the
537
     translated message.  */
538
  bool (*error) (cpp_reader *, int, int, source_location, unsigned int,
539
                 const char *, va_list *)
540
       ATTRIBUTE_FPTR_PRINTF(6,0);
541
 
542
  /* Callbacks for when a macro is expanded, or tested (whether
543
     defined or not at the time) in #ifdef, #ifndef or "defined".  */
544
  void (*used_define) (cpp_reader *, source_location, cpp_hashnode *);
545
  void (*used_undef) (cpp_reader *, source_location, cpp_hashnode *);
546
  /* Called before #define and #undef or other macro definition
547
     changes are processed.  */
548
  void (*before_define) (cpp_reader *);
549
  /* Called whenever a macro is expanded or tested.
550
     Second argument is the location of the start of the current expansion.  */
551
  void (*used) (cpp_reader *, source_location, cpp_hashnode *);
552
 
553
  /* Callback that can change a user builtin into normal macro.  */
554
  bool (*user_builtin_macro) (cpp_reader *, cpp_hashnode *);
555
};
556
 
557
#ifdef VMS
558
#define INO_T_CPP ino_t ino[3]
559
#else
560
#define INO_T_CPP ino_t ino
561
#endif
562
 
563
/* Chain of directories to look for include files in.  */
564
struct cpp_dir
565
{
566
  /* NULL-terminated singly-linked list.  */
567
  struct cpp_dir *next;
568
 
569
  /* NAME of the directory, NUL-terminated.  */
570
  char *name;
571
  unsigned int len;
572
 
573
  /* One if a system header, two if a system header that has extern
574
     "C" guards for C++.  */
575
  unsigned char sysp;
576
 
577
  /* Is this a user-supplied directory? */
578
  bool user_supplied_p;
579
 
580
  /* The canonicalized NAME as determined by lrealpath.  This field
581
     is only used by hosts that lack reliable inode numbers.  */
582
  char *canonical_name;
583
 
584
  /* Mapping of file names for this directory for MS-DOS and related
585
     platforms.  A NULL-terminated array of (from, to) pairs.  */
586
  const char **name_map;
587
 
588
  /* Routine to construct pathname, given the search path name and the
589
     HEADER we are trying to find, return a constructed pathname to
590
     try and open.  If this is NULL, the constructed pathname is as
591
     constructed by append_file_to_dir.  */
592
  char *(*construct) (const char *header, cpp_dir *dir);
593
 
594
  /* The C front end uses these to recognize duplicated
595
     directories in the search path.  */
596
  INO_T_CPP;
597
  dev_t dev;
598
};
599
 
600
/* The structure of a node in the hash table.  The hash table has
601
   entries for all identifiers: either macros defined by #define
602
   commands (type NT_MACRO), assertions created with #assert
603
   (NT_ASSERTION), or neither of the above (NT_VOID).  Builtin macros
604
   like __LINE__ are flagged NODE_BUILTIN.  Poisoned identifiers are
605
   flagged NODE_POISONED.  NODE_OPERATOR (C++ only) indicates an
606
   identifier that behaves like an operator such as "xor".
607
   NODE_DIAGNOSTIC is for speed in lex_token: it indicates a
608
   diagnostic may be required for this node.  Currently this only
609
   applies to __VA_ARGS__, poisoned identifiers, and -Wc++-compat
610
   warnings about NODE_OPERATOR.  */
611
 
612
/* Hash node flags.  */
613
#define NODE_OPERATOR   (1 << 0)        /* C++ named operator.  */
614
#define NODE_POISONED   (1 << 1)        /* Poisoned identifier.  */
615
#define NODE_BUILTIN    (1 << 2)        /* Builtin macro.  */
616
#define NODE_DIAGNOSTIC (1 << 3)        /* Possible diagnostic when lexed.  */
617
#define NODE_WARN       (1 << 4)        /* Warn if redefined or undefined.  */
618
#define NODE_DISABLED   (1 << 5)        /* A disabled macro.  */
619
#define NODE_MACRO_ARG  (1 << 6)        /* Used during #define processing.  */
620
#define NODE_USED       (1 << 7)        /* Dumped with -dU.  */
621
#define NODE_CONDITIONAL (1 << 8)       /* Conditional macro */
622
#define NODE_WARN_OPERATOR (1 << 9)     /* Warn about C++ named operator.  */
623
 
624
/* Different flavors of hash node.  */
625
enum node_type
626
{
627
  NT_VOID = 0,      /* No definition yet.  */
628
  NT_MACRO,        /* A macro of some form.  */
629
  NT_ASSERTION     /* Predicate for #assert.  */
630
};
631
 
632
/* Different flavors of builtin macro.  _Pragma is an operator, but we
633
   handle it with the builtin code for efficiency reasons.  */
634
enum cpp_builtin_type
635
{
636
  BT_SPECLINE = 0,               /* `__LINE__' */
637
  BT_DATE,                      /* `__DATE__' */
638
  BT_FILE,                      /* `__FILE__' */
639
  BT_BASE_FILE,                 /* `__BASE_FILE__' */
640
  BT_INCLUDE_LEVEL,             /* `__INCLUDE_LEVEL__' */
641
  BT_TIME,                      /* `__TIME__' */
642
  BT_STDC,                      /* `__STDC__' */
643
  BT_PRAGMA,                    /* `_Pragma' operator */
644
  BT_TIMESTAMP,                 /* `__TIMESTAMP__' */
645
  BT_COUNTER,                   /* `__COUNTER__' */
646
  BT_FIRST_USER,                /* User defined builtin macros.  */
647
  BT_LAST_USER = BT_FIRST_USER + 31
648
};
649
 
650
#define CPP_HASHNODE(HNODE)     ((cpp_hashnode *) (HNODE))
651
#define HT_NODE(NODE)           ((ht_identifier *) (NODE))
652
#define NODE_LEN(NODE)          HT_LEN (&(NODE)->ident)
653
#define NODE_NAME(NODE)         HT_STR (&(NODE)->ident)
654
 
655
/* Specify which field, if any, of the union is used.  */
656
 
657
enum {
658
  NTV_MACRO,
659
  NTV_ANSWER,
660
  NTV_BUILTIN,
661
  NTV_ARGUMENT,
662
  NTV_NONE
663
};
664
 
665
#define CPP_HASHNODE_VALUE_IDX(HNODE)                           \
666
  ((HNODE.flags & NODE_MACRO_ARG) ? NTV_ARGUMENT                \
667
   : HNODE.type == NT_MACRO ? ((HNODE.flags & NODE_BUILTIN)     \
668
                               ? NTV_BUILTIN : NTV_MACRO)       \
669
   : HNODE.type == NT_ASSERTION ? NTV_ANSWER                    \
670
   : NTV_NONE)
671
 
672
/* The common part of an identifier node shared amongst all 3 C front
673
   ends.  Also used to store CPP identifiers, which are a superset of
674
   identifiers in the grammatical sense.  */
675
 
676
union GTY(()) _cpp_hashnode_value {
677
  /* If a macro.  */
678
  cpp_macro * GTY((tag ("NTV_MACRO"))) macro;
679
  /* Answers to an assertion.  */
680
  struct answer * GTY ((tag ("NTV_ANSWER"))) answers;
681
  /* Code for a builtin macro.  */
682
  enum cpp_builtin_type GTY ((tag ("NTV_BUILTIN"))) builtin;
683
  /* Macro argument index.  */
684
  unsigned short GTY ((tag ("NTV_ARGUMENT"))) arg_index;
685
};
686
 
687
struct GTY(()) cpp_hashnode {
688
  struct ht_identifier ident;
689
  unsigned int is_directive : 1;
690
  unsigned int directive_index : 7;     /* If is_directive,
691
                                           then index into directive table.
692
                                           Otherwise, a NODE_OPERATOR.  */
693
  unsigned char rid_code;               /* Rid code - for front ends.  */
694
  ENUM_BITFIELD(node_type) type : 6;    /* CPP node type.  */
695
  unsigned int flags : 10;              /* CPP flags.  */
696
 
697
  union _cpp_hashnode_value GTY ((desc ("CPP_HASHNODE_VALUE_IDX (%1)"))) value;
698
};
699
 
700
/* Call this first to get a handle to pass to other functions.
701
 
702
   If you want cpplib to manage its own hashtable, pass in a NULL
703
   pointer.  Otherwise you should pass in an initialized hash table
704
   that cpplib will share; this technique is used by the C front
705
   ends.  */
706
extern cpp_reader *cpp_create_reader (enum c_lang, struct ht *,
707
                                      struct line_maps *);
708
 
709
/* Reset the cpp_reader's line_map.  This is only used after reading a
710
   PCH file.  */
711
extern void cpp_set_line_map (cpp_reader *, struct line_maps *);
712
 
713
/* Call this to change the selected language standard (e.g. because of
714
   command line options).  */
715
extern void cpp_set_lang (cpp_reader *, enum c_lang);
716
 
717
/* Set the include paths.  */
718
extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int);
719
 
720
/* Call these to get pointers to the options, callback, and deps
721
   structures for a given reader.  These pointers are good until you
722
   call cpp_finish on that reader.  You can either edit the callbacks
723
   through the pointer returned from cpp_get_callbacks, or set them
724
   with cpp_set_callbacks.  */
725
extern cpp_options *cpp_get_options (cpp_reader *);
726
extern cpp_callbacks *cpp_get_callbacks (cpp_reader *);
727
extern void cpp_set_callbacks (cpp_reader *, cpp_callbacks *);
728
extern struct deps *cpp_get_deps (cpp_reader *);
729
 
730
/* This function reads the file, but does not start preprocessing.  It
731
   returns the name of the original file; this is the same as the
732
   input file, except for preprocessed input.  This will generate at
733
   least one file change callback, and possibly a line change callback
734
   too.  If there was an error opening the file, it returns NULL.  */
735
extern const char *cpp_read_main_file (cpp_reader *, const char *);
736
 
737
/* Set up built-ins with special behavior.  Use cpp_init_builtins()
738
   instead unless your know what you are doing.  */
739
extern void cpp_init_special_builtins (cpp_reader *);
740
 
741
/* Set up built-ins like __FILE__.  */
742
extern void cpp_init_builtins (cpp_reader *, int);
743
 
744
/* This is called after options have been parsed, and partially
745
   processed.  */
746
extern void cpp_post_options (cpp_reader *);
747
 
748
/* Set up translation to the target character set.  */
749
extern void cpp_init_iconv (cpp_reader *);
750
 
751
/* Call this to finish preprocessing.  If you requested dependency
752
   generation, pass an open stream to write the information to,
753
   otherwise NULL.  It is your responsibility to close the stream.  */
754
extern void cpp_finish (cpp_reader *, FILE *deps_stream);
755
 
756
/* Call this to release the handle at the end of preprocessing.  Any
757
   use of the handle after this function returns is invalid.  */
758
extern void cpp_destroy (cpp_reader *);
759
 
760
extern unsigned int cpp_token_len (const cpp_token *);
761
extern unsigned char *cpp_token_as_text (cpp_reader *, const cpp_token *);
762
extern unsigned char *cpp_spell_token (cpp_reader *, const cpp_token *,
763
                                       unsigned char *, bool);
764
extern void cpp_register_pragma (cpp_reader *, const char *, const char *,
765
                                 void (*) (cpp_reader *), bool);
766
extern void cpp_register_deferred_pragma (cpp_reader *, const char *,
767
                                          const char *, unsigned, bool, bool);
768
extern int cpp_avoid_paste (cpp_reader *, const cpp_token *,
769
                            const cpp_token *);
770
extern const cpp_token *cpp_get_token (cpp_reader *);
771
extern const cpp_token *cpp_get_token_with_location (cpp_reader *,
772
                                                     source_location *);
773
extern const unsigned char *cpp_macro_definition (cpp_reader *,
774
                                                  cpp_hashnode *);
775
extern void _cpp_backup_tokens (cpp_reader *, unsigned int);
776
extern const cpp_token *cpp_peek_token (cpp_reader *, int);
777
 
778
/* Evaluate a CPP_*CHAR* token.  */
779
extern cppchar_t cpp_interpret_charconst (cpp_reader *, const cpp_token *,
780
                                          unsigned int *, int *);
781
/* Evaluate a vector of CPP_*STRING* tokens.  */
782
extern bool cpp_interpret_string (cpp_reader *,
783
                                  const cpp_string *, size_t,
784
                                  cpp_string *, enum cpp_ttype);
785
extern bool cpp_interpret_string_notranslate (cpp_reader *,
786
                                              const cpp_string *, size_t,
787
                                              cpp_string *, enum cpp_ttype);
788
 
789
/* Convert a host character constant to the execution character set.  */
790
extern cppchar_t cpp_host_to_exec_charset (cpp_reader *, cppchar_t);
791
 
792
/* Used to register macros and assertions, perhaps from the command line.
793
   The text is the same as the command line argument.  */
794
extern void cpp_define (cpp_reader *, const char *);
795
extern void cpp_define_formatted (cpp_reader *pfile,
796
                                  const char *fmt, ...) ATTRIBUTE_PRINTF_2;
797
extern void cpp_assert (cpp_reader *, const char *);
798
extern void cpp_undef (cpp_reader *, const char *);
799
extern void cpp_unassert (cpp_reader *, const char *);
800
 
801
/* Undefine all macros and assertions.  */
802
extern void cpp_undef_all (cpp_reader *);
803
 
804
extern cpp_buffer *cpp_push_buffer (cpp_reader *, const unsigned char *,
805
                                    size_t, int);
806
extern int cpp_defined (cpp_reader *, const unsigned char *, int);
807
 
808
/* A preprocessing number.  Code assumes that any unused high bits of
809
   the double integer are set to zero.  */
810
typedef unsigned HOST_WIDE_INT cpp_num_part;
811
typedef struct cpp_num cpp_num;
812
struct cpp_num
813
{
814
  cpp_num_part high;
815
  cpp_num_part low;
816
  bool unsignedp;  /* True if value should be treated as unsigned.  */
817
  bool overflow;   /* True if the most recent calculation overflowed.  */
818
};
819
 
820
/* cpplib provides two interfaces for interpretation of preprocessing
821
   numbers.
822
 
823
   cpp_classify_number categorizes numeric constants according to
824
   their field (integer, floating point, or invalid), radix (decimal,
825
   octal, hexadecimal), and type suffixes.  */
826
 
827
#define CPP_N_CATEGORY  0x000F
828
#define CPP_N_INVALID   0x0000
829
#define CPP_N_INTEGER   0x0001
830
#define CPP_N_FLOATING  0x0002
831
 
832
#define CPP_N_WIDTH     0x00F0
833
#define CPP_N_SMALL     0x0010  /* int, float, shrot _Fract/Accum  */
834
#define CPP_N_MEDIUM    0x0020  /* long, double, long _Fract/_Accum.  */
835
#define CPP_N_LARGE     0x0040  /* long long, long double,
836
                                   long long _Fract/Accum.  */
837
 
838
#define CPP_N_WIDTH_MD  0xF0000 /* machine defined.  */
839
#define CPP_N_MD_W      0x10000
840
#define CPP_N_MD_Q      0x20000
841
 
842
#define CPP_N_RADIX     0x0F00
843
#define CPP_N_DECIMAL   0x0100
844
#define CPP_N_HEX       0x0200
845
#define CPP_N_OCTAL     0x0400
846
#define CPP_N_BINARY    0x0800
847
 
848
#define CPP_N_UNSIGNED  0x1000  /* Properties.  */
849
#define CPP_N_IMAGINARY 0x2000
850
#define CPP_N_DFLOAT    0x4000
851
#define CPP_N_DEFAULT   0x8000
852
 
853
#define CPP_N_FRACT     0x100000 /* Fract types.  */
854
#define CPP_N_ACCUM     0x200000 /* Accum types.  */
855
 
856
#define CPP_N_USERDEF   0x1000000 /* C++0x user-defined literal.  */
857
 
858
/* Classify a CPP_NUMBER token.  The return value is a combination of
859
   the flags from the above sets.  */
860
extern unsigned cpp_classify_number (cpp_reader *, const cpp_token *,
861
                                     const char **, source_location);
862
 
863
/* Return the classification flags for a float suffix.  */
864
extern unsigned int cpp_interpret_float_suffix (cpp_reader *, const char *,
865
                                                size_t);
866
 
867
/* Return the classification flags for an int suffix.  */
868
extern unsigned int cpp_interpret_int_suffix (cpp_reader *, const char *,
869
                                              size_t);
870
 
871
/* Evaluate a token classified as category CPP_N_INTEGER.  */
872
extern cpp_num cpp_interpret_integer (cpp_reader *, const cpp_token *,
873
                                      unsigned int);
874
 
875
/* Sign extend a number, with PRECISION significant bits and all
876
   others assumed clear, to fill out a cpp_num structure.  */
877
cpp_num cpp_num_sign_extend (cpp_num, size_t);
878
 
879
/* Diagnostic levels.  To get a diagnostic without associating a
880
   position in the translation unit with it, use cpp_error_with_line
881
   with a line number of zero.  */
882
 
883
enum {
884
  /* Warning, an error with -Werror.  */
885
  CPP_DL_WARNING = 0,
886
  /* Same as CPP_DL_WARNING, except it is not suppressed in system headers.  */
887
  CPP_DL_WARNING_SYSHDR,
888
  /* Warning, an error with -pedantic-errors or -Werror.  */
889
  CPP_DL_PEDWARN,
890
  /* An error.  */
891
  CPP_DL_ERROR,
892
  /* An internal consistency check failed.  Prints "internal error: ",
893
     otherwise the same as CPP_DL_ERROR.  */
894
  CPP_DL_ICE,
895
  /* An informative note following a warning.  */
896
  CPP_DL_NOTE,
897
  /* A fatal error.  */
898
  CPP_DL_FATAL
899
};
900
 
901
/* Warning reason codes. Use a reason code of zero for unclassified warnings
902
   and errors that are not warnings.  */
903
enum {
904
  CPP_W_NONE = 0,
905
  CPP_W_DEPRECATED,
906
  CPP_W_COMMENTS,
907
  CPP_W_MISSING_INCLUDE_DIRS,
908
  CPP_W_TRIGRAPHS,
909
  CPP_W_MULTICHAR,
910
  CPP_W_TRADITIONAL,
911
  CPP_W_LONG_LONG,
912
  CPP_W_ENDIF_LABELS,
913
  CPP_W_NUM_SIGN_CHANGE,
914
  CPP_W_VARIADIC_MACROS,
915
  CPP_W_BUILTIN_MACRO_REDEFINED,
916
  CPP_W_DOLLARS,
917
  CPP_W_UNDEF,
918
  CPP_W_UNUSED_MACROS,
919
  CPP_W_CXX_OPERATOR_NAMES,
920
  CPP_W_NORMALIZE,
921
  CPP_W_INVALID_PCH,
922
  CPP_W_WARNING_DIRECTIVE,
923
  CPP_W_LITERAL_SUFFIX
924
};
925
 
926
/* Output a diagnostic of some kind.  */
927
extern bool cpp_error (cpp_reader *, int, const char *msgid, ...)
928
  ATTRIBUTE_PRINTF_3;
929
extern bool cpp_warning (cpp_reader *, int, const char *msgid, ...)
930
  ATTRIBUTE_PRINTF_3;
931
extern bool cpp_pedwarning (cpp_reader *, int, const char *msgid, ...)
932
  ATTRIBUTE_PRINTF_3;
933
extern bool cpp_warning_syshdr (cpp_reader *, int, const char *msgid, ...)
934
  ATTRIBUTE_PRINTF_3;
935
 
936
/* Output a diagnostic with "MSGID: " preceding the
937
   error string of errno.  No location is printed.  */
938
extern bool cpp_errno (cpp_reader *, int, const char *msgid);
939
 
940
/* Same as cpp_error, except additionally specifies a position as a
941
   (translation unit) physical line and physical column.  If the line is
942
   zero, then no location is printed.  */
943
extern bool cpp_error_with_line (cpp_reader *, int, source_location,
944
                                 unsigned, const char *msgid, ...)
945
  ATTRIBUTE_PRINTF_5;
946
extern bool cpp_warning_with_line (cpp_reader *, int, source_location,
947
                                   unsigned, const char *msgid, ...)
948
  ATTRIBUTE_PRINTF_5;
949
extern bool cpp_pedwarning_with_line (cpp_reader *, int, source_location,
950
                                      unsigned, const char *msgid, ...)
951
  ATTRIBUTE_PRINTF_5;
952
extern bool cpp_warning_with_line_syshdr (cpp_reader *, int, source_location,
953
                                          unsigned, const char *msgid, ...)
954
  ATTRIBUTE_PRINTF_5;
955
 
956
/* In lex.c */
957
extern int cpp_ideq (const cpp_token *, const char *);
958
extern void cpp_output_line (cpp_reader *, FILE *);
959
extern unsigned char *cpp_output_line_to_string (cpp_reader *,
960
                                                 const unsigned char *);
961
extern void cpp_output_token (const cpp_token *, FILE *);
962
extern const char *cpp_type2name (enum cpp_ttype, unsigned char flags);
963
/* Returns the value of an escape sequence, truncated to the correct
964
   target precision.  PSTR points to the input pointer, which is just
965
   after the backslash.  LIMIT is how much text we have.  WIDE is true
966
   if the escape sequence is part of a wide character constant or
967
   string literal.  Handles all relevant diagnostics.  */
968
extern cppchar_t cpp_parse_escape (cpp_reader *, const unsigned char ** pstr,
969
                                   const unsigned char *limit, int wide);
970
 
971
/* Structure used to hold a comment block at a given location in the
972
   source code.  */
973
 
974
typedef struct
975
{
976
  /* Text of the comment including the terminators.  */
977
  char *comment;
978
 
979
  /* source location for the given comment.  */
980
  source_location sloc;
981
} cpp_comment;
982
 
983
/* Structure holding all comments for a given cpp_reader.  */
984
 
985
typedef struct
986
{
987
  /* table of comment entries.  */
988
  cpp_comment *entries;
989
 
990
  /* number of actual entries entered in the table.  */
991
  int count;
992
 
993
  /* number of entries allocated currently.  */
994
  int allocated;
995
} cpp_comment_table;
996
 
997
/* Returns the table of comments encountered by the preprocessor. This
998
   table is only populated when pfile->state.save_comments is true. */
999
extern cpp_comment_table *cpp_get_comments (cpp_reader *);
1000
 
1001
/* In hash.c */
1002
 
1003
/* Lookup an identifier in the hashtable.  Puts the identifier in the
1004
   table if it is not already there.  */
1005
extern cpp_hashnode *cpp_lookup (cpp_reader *, const unsigned char *,
1006
                                 unsigned int);
1007
 
1008
typedef int (*cpp_cb) (cpp_reader *, cpp_hashnode *, void *);
1009
extern void cpp_forall_identifiers (cpp_reader *, cpp_cb, void *);
1010
 
1011
/* In macro.c */
1012
extern void cpp_scan_nooutput (cpp_reader *);
1013
extern int  cpp_sys_macro_p (cpp_reader *);
1014
extern unsigned char *cpp_quote_string (unsigned char *, const unsigned char *,
1015
                                        unsigned int);
1016
 
1017
/* In files.c */
1018
extern bool cpp_included (cpp_reader *, const char *);
1019
extern bool cpp_included_before (cpp_reader *, const char *, source_location);
1020
extern void cpp_make_system_header (cpp_reader *, int, int);
1021
extern bool cpp_push_include (cpp_reader *, const char *);
1022
extern bool cpp_push_default_include (cpp_reader *, const char *);
1023
extern void cpp_change_file (cpp_reader *, enum lc_reason, const char *);
1024
extern const char *cpp_get_path (struct _cpp_file *);
1025
extern cpp_dir *cpp_get_dir (struct _cpp_file *);
1026
extern cpp_buffer *cpp_get_buffer (cpp_reader *);
1027
extern struct _cpp_file *cpp_get_file (cpp_buffer *);
1028
extern cpp_buffer *cpp_get_prev (cpp_buffer *);
1029
extern void cpp_clear_file_cache (cpp_reader *);
1030
 
1031
/* In pch.c */
1032
struct save_macro_data;
1033
extern int cpp_save_state (cpp_reader *, FILE *);
1034
extern int cpp_write_pch_deps (cpp_reader *, FILE *);
1035
extern int cpp_write_pch_state (cpp_reader *, FILE *);
1036
extern int cpp_valid_state (cpp_reader *, const char *, int);
1037
extern void cpp_prepare_state (cpp_reader *, struct save_macro_data **);
1038
extern int cpp_read_state (cpp_reader *, const char *, FILE *,
1039
                           struct save_macro_data *);
1040
 
1041
/* In lex.c */
1042
extern void cpp_force_token_locations (cpp_reader *, source_location *);
1043
extern void cpp_stop_forcing_token_locations (cpp_reader *);
1044
 
1045
/* In expr.c */
1046
extern enum cpp_ttype cpp_userdef_string_remove_type
1047
  (enum cpp_ttype type);
1048
extern enum cpp_ttype cpp_userdef_string_add_type
1049
  (enum cpp_ttype type);
1050
extern enum cpp_ttype cpp_userdef_char_remove_type
1051
  (enum cpp_ttype type);
1052
extern enum cpp_ttype cpp_userdef_char_add_type
1053
  (enum cpp_ttype type);
1054
extern bool cpp_userdef_string_p
1055
  (enum cpp_ttype type);
1056
extern bool cpp_userdef_char_p
1057
  (enum cpp_ttype type);
1058
extern const char * cpp_get_userdef_suffix
1059
  (const cpp_token *);
1060
 
1061
#endif /* ! LIBCPP_CPPLIB_H */

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