gcc/cpplib.h

   1 /* Definitions for CPP library.
   2    Copyright (C) 1995, 96-99, 2000 Free Software Foundation, Inc.
   3    Written by Per Bothner, 1994-95.
   4
   5 This program is free software; you can redistribute it and/or modify it
   6 under the terms of the GNU General Public License as published by the
   7 Free Software Foundation; either version 2, or (at your option) any
   8 later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18
  19  In other words, you are welcome to use, share and improve this program.
  20  You are forbidden to forbid anyone else to use, share and improve
  21  what you give them.   Help stamp out software-hoarding!  */
  22 #ifndef __GCC_CPPLIB__
  23 #define __GCC_CPPLIB__
  24
  25 #include <sys/types.h>
  26
  27 #ifdef __cplusplus
  28 extern "C" {
  29 #endif
  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_printer cpp_printer;
  35 typedef struct cpp_token cpp_token;
  36 typedef struct cpp_toklist cpp_toklist;
  37
  38   /* Put operators that can appear in a preprocessor expression first.
  39      This allows a lookup table to be implemented in _cpp_parse_expr.
  40      Ordering within this group is currently not significant, apart
  41      from those ending in '=' being at the end.  */
  42 #define TTYPE_TABLE                             \
  43   T(CPP_PLUS = 0,       "+")    /* math */      \
  44   T(CPP_MINUS,          "-")                    \
  45   T(CPP_MULT,           "*")                    \
  46   T(CPP_DIV,            "/")                    \
  47   T(CPP_MOD,            "%")                    \
  48   T(CPP_AND,            "&")    /* bit ops */   \
  49   T(CPP_OR,             "|")                    \
  50   T(CPP_XOR,            "^")                    \
  51   T(CPP_COMPL,          "~")                    \
  52   T(CPP_RSHIFT,         ">>")                   \
  53   T(CPP_LSHIFT,         "<<")                   \
  54   T(CPP_NOT,            "!")    /* logicals */  \
  55   T(CPP_AND_AND,        "&&")                   \
  56   T(CPP_OR_OR,          "||")                   \
  57   T(CPP_QUERY,          "?")                    \
  58   T(CPP_COLON,          ":")                    \
  59   T(CPP_COMMA,          ",")    /* grouping */  \
  60   T(CPP_OPEN_PAREN,     "(")                    \
  61   T(CPP_CLOSE_PAREN,    ")")                    \
  62   T(CPP_GREATER,        ">")    /* compare */   \
  63   T(CPP_LESS,           "<")                    \
  64   T(CPP_EQ_EQ,          "==")                   \
  65   T(CPP_NOT_EQ,         "!=")                   \
  66   T(CPP_GREATER_EQ,     ">=")                   \
  67   T(CPP_LESS_EQ,        "<=")                   \
  68 \
  69   /* The remainder of the punctuation.  Order is not significant. */    \
  70   T(CPP_PLUS_EQ,        "+=")   /* math */      \
  71   T(CPP_MINUS_EQ,       "-=")                   \
  72   T(CPP_MULT_EQ,        "*=")                   \
  73   T(CPP_DIV_EQ,         "/=")                   \
  74   T(CPP_MOD_EQ,         "%=")                   \
  75   T(CPP_AND_EQ,         "&=")   /* bit ops */   \
  76   T(CPP_OR_EQ,          "|=")                   \
  77   T(CPP_XOR_EQ,         "^=")                   \
  78   T(CPP_COMPL_EQ,       "~=")                   \
  79   T(CPP_RSHIFT_EQ,      ">>=")                  \
  80   T(CPP_LSHIFT_EQ,      "<<=")                  \
  81   T(CPP_EQ,             "=")    /* assign */    \
  82   T(CPP_PLUS_PLUS,      "++")   /* increment */ \
  83   T(CPP_MINUS_MINUS,    "--")                   \
  84   T(CPP_DEREF,          "->")   /* accessors */ \
  85   T(CPP_DOT,            ".")                    \
  86   T(CPP_OPEN_SQUARE,    "[")                    \
  87   T(CPP_CLOSE_SQUARE,   "]")                    \
  88   T(CPP_SCOPE,          "::")                   \
  89   T(CPP_DEREF_STAR,     "->*")                  \
  90   T(CPP_DOT_STAR,       ".*")                   \
  91   T(CPP_OPEN_BRACE,     "{")    /* structure */ \
  92   T(CPP_CLOSE_BRACE,    "}")                    \
  93   T(CPP_SEMICOLON,      ";")                    \
  94   T(CPP_ELLIPSIS,       "...")                  \
  95   T(CPP_HASH,           "#")                    \
  96   T(CPP_PASTE,          "##")                   \
  97   T(CPP_BACKSLASH,      "\\")                   \
  98   T(CPP_MIN,            "<?")   /* extension */ \
  99   T(CPP_MAX,            ">?")                   \
 100   T(CPP_OTHER,          spell_other) /* stray punctuation */ \
 101 \
 102   T(CPP_NAME,           spell_name)     /* word */      \
 103   T(CPP_INT,            0)              /* 23 */        \
 104   T(CPP_FLOAT,          0)              /* 3.14159 */   \
 105   T(CPP_NUMBER,         spell_name)     /* 34_be+ta  */ \
 106   T(CPP_CHAR,           spell_char)     /* 'char' */    \
 107   T(CPP_WCHAR,          spell_char)     /* L'char' */   \
 108   T(CPP_STRING,         spell_string)   /* "string" */  \
 109   T(CPP_WSTRING,        spell_string)   /* L"string" */ \
 110 \
 111   T(CPP_COMMENT,        spell_comment)  /* Only if output comments.  */ \
 112   T(CPP_VSPACE,         "\n")           /* End of line.  */             \
 113   T(CPP_EOF,            0)              /* End of file.  */             \
 114   T(CPP_HEADER_NAME,    0)              /* <stdio.h> in #include */     \
 115   T(CPP_ASSERTION,      0)              /* (...) in #assert */          \
 116 \
 117   /* Obsolete - will be removed when no code uses them still.  */       \
 118   T(CPP_HSPACE,         0)              /* Horizontal white space.  */  \
 119   T(CPP_POP,            0)              /* End of buffer.  */           \
 120   T(CPP_DIRECTIVE,      0)              /* #define and the like */      \
 121   T(CPP_MACRO,          0)              /* Like a NAME, but expanded.  */
 122
 123 #define T(e, s) e,
 124 enum cpp_ttype
 125 {
 126   TTYPE_TABLE
 127   N_TTYPES
 128 };
 129 #undef T
 130
 131 /* Payload of a NAME, NUMBER, FLOAT, STRING, or COMMENT token.  */
 132 struct cpp_name
 133 {
 134   unsigned int len;
 135   unsigned int offset;          /* from list->namebuf */
 136 };
 137
 138 /* Per token flags.  */
 139 #define HSPACE_BEFORE   (1 << 0)        /* token preceded by hspace */
 140
 141 /* A preprocessing token.
 142    This has been carefully packed and should occupy 16 bytes on
 143    both 32- and 64-bit hosts.  */
 144 struct cpp_token
 145 {
 146   unsigned short col;                   /* starting column of this token */
 147 #ifdef ENUM_BITFIELDS_ARE_UNSIGNED
 148   enum cpp_ttype type : CHAR_BIT;       /* node type */
 149 #else
 150   unsigned char type;
 151 #endif
 152   unsigned char flags;                  /* flags - see above */
 153   unsigned int aux;                     /* hash of a NAME, or something -
 154                                            see uses in the code */
 155   union
 156   {
 157     struct cpp_name name;               /* a string */
 158     HOST_WIDEST_INT integer;            /* an integer */
 159   } val;
 160 };
 161
 162 /* Directive flags.  */
 163 #define SYNTAX_INCLUDE (1 << 8)
 164 #define SYNTAX_ASSERT  (1 << 9)
 165
 166 typedef int (*directive_handler) PARAMS ((cpp_reader *));
 167 typedef int (*parse_cleanup_t) PARAMS ((cpp_buffer *, cpp_reader *));
 168
 169 struct cpp_toklist
 170 {
 171   struct cpp_token *tokens;     /* actual tokens as an array */
 172   unsigned int tokens_used;     /* tokens used */
 173   unsigned int tokens_cap;      /* tokens allocated */
 174
 175   unsigned char *namebuf;       /* names buffer */
 176   unsigned int name_used;       /* _bytes_ used */
 177   unsigned int name_cap;        /* _bytes_ allocated */
 178
 179   unsigned int line;            /* starting line number */
 180
 181   /* Only used if tokens[0].type == CPP_DIRECTIVE.  This is the
 182      handler to call after lexing the rest of this line.  The flags
 183      indicate whether the rest of the line gets special treatment
 184      during lexing (#include, #if, #assert, #unassert).  */
 185   directive_handler dir_handler;
 186   unsigned short dir_flags;
 187 };
 188
 189 struct cpp_buffer
 190 {
 191   const unsigned char *cur;      /* current position */
 192   const unsigned char *rlimit; /* end of valid data */
 193   const unsigned char *buf;      /* entire buffer */
 194   const unsigned char *line_base; /* start of current line */
 195   const unsigned char *mark;  /* Saved position for lengthy backtrack. */
 196
 197   struct cpp_buffer *prev;
 198
 199   /* Filename specified with #line command.  */
 200   const char *nominal_fname;
 201   /* Actual directory of this file, used only for "" includes */
 202   struct file_name_list *actual_dir;
 203
 204   /* Pointer into the include hash table.  Used for include_next and
 205      to record control macros. */
 206   struct ihash *ihash;
 207
 208   parse_cleanup_t cleanup;
 209
 210   /* If the buffer is the expansion of a macro, this points to the
 211      macro's hash table entry.  */
 212   struct hashnode *macro;
 213
 214   /* Value of if_stack at start of this file.
 215      Used to prohibit unmatched #endif (etc) in an include file.  */
 216   struct if_stack *if_stack;
 217
 218   /* Line number at line_base (above). */
 219   unsigned int lineno;
 220
 221   /* True if this is a header file included using <FILENAME>.  */
 222   char system_header_p;
 223
 224   /* True if end-of-file has already been hit once in this buffer.  */
 225   char seen_eof;
 226
 227   /* True if buffer contains escape sequences.
 228      Currently there are two kinds:
 229      "\r-" means following identifier should not be macro-expanded.
 230      "\r " means a token-separator.  This turns into " " in final output
 231           if not stringizing and needed to separate tokens; otherwise nothing.
 232      Any other two-character sequence beginning with \r is an error.
 233
 234      If this is NOT set, then \r is a one-character escape meaning backslash
 235      newline.  This is guaranteed not to occur in the middle of a token.
 236      The two interpretations of \r do not conflict, because the two-character
 237      escapes are used only in macro buffers, and backslash-newline is removed
 238      from macro expansion text in collect_expansion and/or macarg.  */
 239   char has_escapes;
 240
 241   /* Used by the C++ frontend to implement redirected input (such as for
 242      default argument and/or template parsing).  */
 243   char manual_pop;
 244
 245   /* True if we have already warned about C++ comments in this file.
 246      The warning happens only for C89 extended mode with -pedantic on,
 247      and only once per file (otherwise it would be far too noisy).  */
 248   char warned_cplusplus_comments;
 249 };
 250
 251 struct file_name_map_list;
 252 struct htab;
 253
 254 /* Maximum nesting of cpp_buffers.  We use a static limit, partly for
 255    efficiency, and partly to limit runaway recursion.  */
 256 #define CPP_STACK_MAX 200
 257
 258 /* Values for opts.dump_macros.
 259   dump_only means inhibit output of the preprocessed text
 260              and instead output the definitions of all user-defined
 261              macros in a form suitable for use as input to cpp.
 262    dump_names means pass #define and the macro name through to output.
 263    dump_definitions means pass the whole definition (plus #define) through
 264 */
 265 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
 266
 267 /* This structure is nested inside struct cpp_reader, and
 268    carries all the options visible to the command line.  */
 269 struct cpp_options
 270 {
 271   /* Name of input and output files.  */
 272   const char *in_fname;
 273   const char *out_fname;
 274
 275   /* Pending options - -D, -U, -A, -I, -ixxx. */
 276   struct cpp_pending *pending;
 277
 278   /* File name which deps are being written to.  This is 0 if deps are
 279      being written to stdout.  */
 280   const char *deps_file;
 281
 282   /* Target-name to write with the dependency information.  */
 283   char *deps_target;
 284
 285   /* Search paths for include files.  */
 286   struct file_name_list *quote_include;  /* First dir to search for "file" */
 287   struct file_name_list *bracket_include;/* First dir to search for <file> */
 288
 289   /* Map between header names and file names, used only on DOS where
 290      file names are limited in length.  */
 291   struct file_name_map_list *map_list;
 292
 293   /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
 294      in the standard include file directories.  */
 295   const char *include_prefix;
 296   unsigned int include_prefix_len;
 297
 298   /* Non-0 means -v, so print the full set of include dirs.  */
 299   unsigned char verbose;
 300
 301   /* Nonzero means use extra default include directories for C++.  */
 302   unsigned char cplusplus;
 303
 304   /* Nonzero means handle cplusplus style comments */
 305   unsigned char cplusplus_comments;
 306
 307   /* Nonzero means handle #import, for objective C.  */
 308   unsigned char objc;
 309
 310   /* Nonzero means this is an assembly file, so ignore unrecognized
 311      directives and the "# 33" form of #line, both of which are
 312      probably comments.  Also, permit unbalanced ' strings (again,
 313      likely to be in comments).  */
 314   unsigned char lang_asm;
 315
 316   /* Nonzero means this is Fortran, and we don't know where the
 317      comments are, so permit unbalanced ' strings.  Unlike lang_asm,
 318      this does not ignore unrecognized directives.  */
 319   unsigned char lang_fortran;
 320
 321   /* Nonzero means handle CHILL comment syntax and output CHILL string
 322      delimiters for __DATE__ etc. */
 323   unsigned char chill;
 324
 325   /* Nonzero means don't copy comments into the output file.  */
 326   unsigned char discard_comments;
 327
 328   /* Nonzero means process the ANSI trigraph sequences.  */
 329   unsigned char trigraphs;
 330
 331   /* Nonzero means print the names of included files rather than the
 332      preprocessed output.  1 means just the #include "...", 2 means
 333      #include <...> as well.  */
 334   unsigned char print_deps;
 335
 336   /* Nonzero if missing .h files in -M output are assumed to be
 337      generated files and not errors.  */
 338   unsigned char print_deps_missing_files;
 339
 340   /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
 341   unsigned char print_deps_append;
 342
 343   /* Nonzero means print names of header files (-H).  */
 344   unsigned char print_include_names;
 345
 346   /* Nonzero means cpp_pedwarn causes a hard error.  */
 347   unsigned char pedantic_errors;
 348
 349   /* Nonzero means don't print warning messages.  */
 350   unsigned char inhibit_warnings;
 351
 352   /* Nonzero means don't print error messages.  Has no option to
 353      select it, but can be set by a user of cpplib (e.g. fix-header).  */
 354   unsigned char inhibit_errors;
 355
 356   /* Nonzero means warn if slash-star appears in a comment.  */
 357   unsigned char warn_comments;
 358
 359   /* Nonzero means warn if there are any trigraphs.  */
 360   unsigned char warn_trigraphs;
 361
 362   /* Nonzero means warn if #import is used.  */
 363   unsigned char warn_import;
 364
 365   /* Nonzero means warn if a macro argument is (or would be)
 366      stringified with -traditional, and warn about directives
 367      with the # indented from the beginning of the line.  */
 368   unsigned char warn_traditional;
 369
 370   /* Nonzero means turn warnings into errors.  */
 371   unsigned char warnings_are_errors;
 372
 373   /* Nonzero causes output not to be done, but directives such as
 374      #define that have side effects are still obeyed.  */
 375   unsigned char no_output;
 376
 377   /* Nonzero means we should look for header.gcc files that remap file
 378      names.  */
 379   unsigned char remap;
 380
 381   /* Nonzero means don't output line number information.  */
 382   unsigned char no_line_commands;
 383
 384   /* Nonzero means -I- has been seen, so don't look for #include "foo"
 385      the source-file directory.  */
 386   unsigned char ignore_srcdir;
 387
 388   /* Zero means dollar signs are punctuation. */
 389   unsigned char dollars_in_ident;
 390
 391   /* Nonzero means try to imitate old fashioned non-ANSI preprocessor.  */
 392   unsigned char traditional;
 393
 394   /* Nonzero means warn if undefined identifiers are evaluated in an #if.  */
 395   unsigned char warn_undef;
 396
 397   /* Nonzero for the 1989 C Standard, including corrigenda and amendments.  */
 398   unsigned char c89;
 399
 400   /* Nonzero for the 1999 C Standard, including corrigenda and amendments.  */
 401   unsigned char c99;
 402
 403   /* Nonzero means give all the error messages the ANSI standard requires.  */
 404   unsigned char pedantic;
 405
 406   /* Nonzero means we're looking at already preprocessed code, so don't
 407      bother trying to do macro expansion and whatnot.  */
 408   unsigned char preprocessed;
 409
 410   /* Nonzero disables all the standard directories for headers.  */
 411   unsigned char no_standard_includes;
 412
 413   /* Nonzero disables the C++-specific standard directories for headers.  */
 414   unsigned char no_standard_cplusplus_includes;
 415
 416   /* Nonzero means dump macros in some fashion - see above.  */
 417   unsigned char dump_macros;
 418
 419   /* Nonzero means pass all #define and #undef directives which we
 420      actually process through to the output stream.  This feature is
 421      used primarily to allow cc1 to record the #defines and #undefs
 422      for the sake of debuggers which understand about preprocessor
 423      macros, but it may also be useful with -E to figure out how
 424      symbols are defined, and where they are defined.  */
 425   unsigned char debug_output;
 426
 427   /* Nonzero means pass #include lines through to the output.  */
 428   unsigned char dump_includes;
 429
 430   /* Print column number in error messages.  */
 431   unsigned char show_column;
 432 };
 433
 434
 435 /* A cpp_reader encapsulates the "state" of a pre-processor run.
 436    Applying cpp_get_token repeatedly yields a stream of pre-processor
 437    tokens.  Usually, there is only one cpp_reader object active. */
 438
 439 struct cpp_reader
 440 {
 441   /* Top of buffer stack.  */
 442   cpp_buffer *buffer;
 443
 444   /* Token list used by get_directive_token.  */
 445   cpp_toklist directbuf;
 446
 447   /* A buffer used for both for cpp_get_token's output, and also internally. */
 448   unsigned char *token_buffer;
 449   /* Allocated size of token_buffer.  CPP_RESERVE allocates space.  */
 450   unsigned int token_buffer_size;
 451   /* End of the written part of token_buffer. */
 452   unsigned char *limit;
 453
 454   /* Error counter for exit code */
 455   unsigned int errors;
 456
 457   /* Line where a newline was first seen in a string constant.  */
 458   unsigned int multiline_string_line;
 459
 460   /* Current depth in #include directives that use <...>.  */
 461   unsigned int system_include_depth;
 462
 463   /* Current depth of buffer stack. */
 464   unsigned int buffer_stack_depth;
 465
 466   /* Hash table of macros and assertions.  See cpphash.c */
 467   struct htab *hashtab;
 468
 469   /* Hash table of other included files.  See cppfiles.c */
 470   struct htab *all_include_files;
 471
 472   /* Chain of `actual directory' file_name_list entries,
 473      for "" inclusion. */
 474   struct file_name_list *actual_dirs;
 475
 476   /* Current maximum length of directory names in the search path
 477      for include files.  (Altered as we get more of them.)  */
 478   unsigned int max_include_len;
 479
 480   struct if_stack *if_stack;
 481   const unsigned char *potential_control_macro;
 482
 483   /* Buffer of -M output.  */
 484   struct deps *deps;
 485
 486   /* A buffer used only by read_and_prescan (in cppfiles.c), which is
 487      allocated once per cpp_reader object to keep it off the stack.  */
 488   unsigned char *input_buffer;
 489   size_t input_buffer_len;
 490
 491   /* User visible options.  */
 492   struct cpp_options opts;
 493
 494   /* Nonzero means we have printed (while error reporting) a list of
 495      containing files that matches the current status.  */
 496   unsigned char input_stack_listing_current;
 497
 498   /* If non-zero, macros are not expanded.  */
 499   unsigned char no_macro_expand;
 500
 501   /* If non-zero, directives cause a hard error.  Used when parsing
 502      macro arguments.  */
 503   unsigned char no_directives;
 504
 505   /* We're printed a warning recommending against using #import.  */
 506   unsigned char import_warning;
 507
 508   /* If true, characters between '<' and '>' are a single (string) token.  */
 509   unsigned char parsing_include_directive;
 510
 511   /* If true, # introduces an assertion (see do_assert) */
 512   unsigned char parsing_if_directive;
 513
 514   /* If true, # and ## are the STRINGIZE and TOKPASTE operators */
 515   unsigned char parsing_define_directive;
 516
 517   /* True if escape sequences (as described for has_escapes in
 518      parse_buffer) should be emitted.  */
 519   unsigned char output_escapes;
 520
 521   /* 0: Have seen non-white-space on this line.
 522      1: Only seen white space so far on this line.
 523      2: Only seen white space so far in this file.  */
 524   unsigned char only_seen_white;
 525
 526   /* True after cpp_start_read completes.  Used to inhibit some
 527      warnings while parsing the command line.  */
 528   unsigned char done_initializing;
 529 };
 530
 531 /* struct cpp_printer encapsulates state used to convert the stream of
 532    tokens coming from cpp_get_token back into a text file.  Not
 533    everyone wants to do that, hence we separate the function.  */
 534
 535 struct cpp_printer
 536 {
 537   FILE *outf;                   /* stream to write to */
 538   const char *last_fname;       /* previous file name */
 539   unsigned int last_bsd;        /* did we just push? */
 540   unsigned int lineno;          /* line currently being written */
 541   unsigned int written;         /* low water mark in token buffer */
 542 };
 543
 544 #define CPP_FATAL_LIMIT 1000
 545 /* True if we have seen a "fatal" error. */
 546 #define CPP_FATAL_ERRORS(READER) ((READER)->errors >= CPP_FATAL_LIMIT)
 547
 548 /* Macros for manipulating the token_buffer. */
 549
 550 /* Number of characters currently in PFILE's output buffer. */
 551 #define CPP_WRITTEN(PFILE) ((size_t)((PFILE)->limit - (PFILE)->token_buffer))
 552 #define CPP_PWRITTEN(PFILE) ((PFILE)->limit)
 553 #define CPP_ADJUST_WRITTEN(PFILE,DELTA) ((PFILE)->limit += (DELTA))
 554 #define CPP_SET_WRITTEN(PFILE,N) ((PFILE)->limit = (PFILE)->token_buffer + (N))
 555
 556 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
 557 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
 558 #define CPP_BUF_LINE(BUF) ((BUF)->lineno)
 559 #define CPP_BUF_COL(BUF) ((BUF)->cur - (BUF)->line_base)
 560
 561 /* Name under which this program was invoked.  */
 562 extern const char *progname;
 563
 564 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
 565 extern enum cpp_ttype cpp_get_token PARAMS ((cpp_reader *));
 566 extern enum cpp_ttype cpp_get_non_space_token PARAMS ((cpp_reader *));
 567
 568 extern void cpp_reader_init PARAMS ((cpp_reader *));
 569 extern cpp_printer *cpp_printer_init PARAMS ((cpp_reader *, cpp_printer *));
 570 extern int cpp_start_read PARAMS ((cpp_reader *, cpp_printer *, const char *));
 571 extern void cpp_output_tokens PARAMS ((cpp_reader *, cpp_printer *));
 572 extern void cpp_output_list PARAMS ((cpp_reader *, cpp_printer *,
 573                                      const cpp_toklist *));
 574 extern void cpp_finish PARAMS ((cpp_reader *, cpp_printer *));
 575 extern void cpp_cleanup PARAMS ((cpp_reader *));
 576
 577 extern cpp_buffer *cpp_file_buffer PARAMS((cpp_reader *));
 578 extern void cpp_define PARAMS ((cpp_reader *, const char *));
 579 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
 580 extern void cpp_undef  PARAMS ((cpp_reader *, const char *));
 581 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
 582
 583 /* N.B. The error-message-printer prototypes have not been nicely
 584    formatted because exgettext needs to see 'msgid' on the same line
 585    as the name of the function in order to work properly.  Only the
 586    string argument gets a name in an effort to keep the lines from
 587    getting ridiculously oversized.  */
 588
 589 extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
 590   ATTRIBUTE_PRINTF_2;
 591 extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
 592   ATTRIBUTE_PRINTF_2;
 593 extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
 594   ATTRIBUTE_PRINTF_2;
 595 extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
 596   ATTRIBUTE_PRINTF_2;
 597 extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
 598   ATTRIBUTE_PRINTF_2;
 599 extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
 600   ATTRIBUTE_PRINTF_2;
 601 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
 602   ATTRIBUTE_PRINTF_4;
 603 extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
 604   ATTRIBUTE_PRINTF_4;
 605 extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
 606   ATTRIBUTE_PRINTF_4;
 607 extern void cpp_pedwarn_with_file_and_line PARAMS ((cpp_reader *, const char *, int, int, const char *msgid, ...))
 608   ATTRIBUTE_PRINTF_5;
 609 extern void cpp_error_from_errno        PARAMS ((cpp_reader *, const char *));
 610 extern void cpp_notice_from_errno       PARAMS ((cpp_reader *, const char *));
 611
 612 /* In cpplex.c */
 613 extern cpp_buffer *cpp_push_buffer      PARAMS ((cpp_reader *,
 614                                                  const unsigned char *, long));
 615 extern cpp_buffer *cpp_pop_buffer       PARAMS ((cpp_reader *));
 616 extern void cpp_scan_buffer             PARAMS ((cpp_reader *, cpp_printer *));
 617 extern void cpp_scan_buffer_nooutput    PARAMS ((cpp_reader *));
 618
 619
 620
 621 /* In cpphash.c */
 622 extern int cpp_defined                  PARAMS ((cpp_reader *,
 623                                                  const unsigned char *, int));
 624
 625 /* In cppfiles.c */
 626 extern int cpp_included                 PARAMS ((cpp_reader *, const char *));
 627 extern int cpp_read_file                PARAMS ((cpp_reader *, const char *));
 628
 629 #ifdef __cplusplus
 630 }
 631 #endif
 632 #endif /* __GCC_CPPLIB__ */