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 typedef struct cpp_name cpp_name;
  38
  39 /* The first two groups, apart from '=', can appear in preprocessor
  40    expressions.  This allows a lookup table to be implemented in
  41    _cpp_parse_expr.
  42
  43    The first group, to CPP_LAST_EQ, can be immediately followed by an
  44    '='.  The lexer needs operators ending in '=', like ">>=", to be in
  45    the same order as their counterparts without the '=', like ">>".  */
  46
  47 /* Positions in the table.  */
  48 #define CPP_LAST_EQ CPP_LSHIFT
  49 #define CPP_FIRST_DIGRAPH CPP_HASH
  50
  51 #define TTYPE_TABLE                             \
  52   T(CPP_EQ = 0,         "=")                    \
  53   T(CPP_NOT,            "!")                    \
  54   T(CPP_GREATER,        ">")    /* compare */   \
  55   T(CPP_LESS,           "<")                    \
  56   T(CPP_PLUS,           "+")    /* math */      \
  57   T(CPP_MINUS,          "-")                    \
  58   T(CPP_MULT,           "*")                    \
  59   T(CPP_DIV,            "/")                    \
  60   T(CPP_MOD,            "%")                    \
  61   T(CPP_AND,            "&")    /* bit ops */   \
  62   T(CPP_OR,             "|")                    \
  63   T(CPP_XOR,            "^")                    \
  64   T(CPP_RSHIFT,         ">>")                   \
  65   T(CPP_LSHIFT,         "<<")                   \
  66 \
  67   T(CPP_COMPL,          "~")                    \
  68   T(CPP_AND_AND,        "&&")   /* logical */   \
  69   T(CPP_OR_OR,          "||")                   \
  70   T(CPP_QUERY,          "?")                    \
  71   T(CPP_COLON,          ":")                    \
  72   T(CPP_COMMA,          ",")    /* grouping */  \
  73   T(CPP_OPEN_PAREN,     "(")                    \
  74   T(CPP_CLOSE_PAREN,    ")")                    \
  75   T(CPP_EQ_EQ,          "==")   /* compare */   \
  76   T(CPP_NOT_EQ,         "!=")                   \
  77   T(CPP_GREATER_EQ,     ">=")                   \
  78   T(CPP_LESS_EQ,        "<=")                   \
  79 \
  80   T(CPP_PLUS_EQ,        "+=")   /* math */      \
  81   T(CPP_MINUS_EQ,       "-=")                   \
  82   T(CPP_MULT_EQ,        "*=")                   \
  83   T(CPP_DIV_EQ,         "/=")                   \
  84   T(CPP_MOD_EQ,         "%=")                   \
  85   T(CPP_AND_EQ,         "&=")   /* bit ops */   \
  86   T(CPP_OR_EQ,          "|=")                   \
  87   T(CPP_XOR_EQ,         "^=")                   \
  88   T(CPP_RSHIFT_EQ,      ">>=")                  \
  89   T(CPP_LSHIFT_EQ,      "<<=")                  \
  90   /* Digraphs together, beginning with CPP_FIRST_DIGRAPH.  */   \
  91   T(CPP_HASH,           "#")    /* digraphs */  \
  92   T(CPP_PASTE,          "##")                   \
  93   T(CPP_OPEN_SQUARE,    "[")                    \
  94   T(CPP_CLOSE_SQUARE,   "]")                    \
  95   T(CPP_OPEN_BRACE,     "{")                    \
  96   T(CPP_CLOSE_BRACE,    "}")                    \
  97   /* The remainder of the punctuation.  Order is not significant. */    \
  98   T(CPP_SEMICOLON,      ";")    /* structure */ \
  99   T(CPP_ELLIPSIS,       "...")                  \
 100   T(CPP_BACKSLASH,      "\\")                   \
 101   T(CPP_PLUS_PLUS,      "++")   /* increment */ \
 102   T(CPP_MINUS_MINUS,    "--")                   \
 103   T(CPP_DEREF,          "->")   /* accessors */ \
 104   T(CPP_DOT,            ".")                    \
 105   T(CPP_SCOPE,          "::")                   \
 106   T(CPP_DEREF_STAR,     "->*")                  \
 107   T(CPP_DOT_STAR,       ".*")                   \
 108   T(CPP_MIN,            "<?")   /* extension */ \
 109   T(CPP_MAX,            ">?")                   \
 110   C(CPP_OTHER,          0)      /* stray punctuation */ \
 111 \
 112   I(CPP_NAME,           0)      /* word */      \
 113   I(CPP_INT,            0)      /* 23 */        \
 114   I(CPP_FLOAT,          0)      /* 3.14159 */   \
 115   I(CPP_NUMBER,         0)      /* 34_be+ta  */ \
 116   S(CPP_CHAR,           0)      /* 'char' */    \
 117   S(CPP_WCHAR,          0)      /* L'char' */   \
 118   S(CPP_STRING,         0)      /* "string" */  \
 119   S(CPP_WSTRING,        0)      /* L"string" */ \
 120 \
 121   I(CPP_COMMENT,        0)      /* Only if output comments.  */ \
 122   N(CPP_MACRO_ARG,      0)      /* Macro argument.  */          \
 123   N(CPP_SUBLIST,        0)      /* Sublist.  */                 \
 124   T(CPP_VSPACE,         "\n")   /* End of line.  */             \
 125   N(CPP_EOF,            0)      /* End of file.  */             \
 126   N(CPP_HEADER_NAME,    0)      /* <stdio.h> in #include */     \
 127   N(CPP_ASSERTION,      0)      /* (...) in #assert */          \
 128 \
 129   /* Obsolete - will be removed when no code uses them still.  */       \
 130   N(CPP_HSPACE,         0)      /* Horizontal white space.  */  \
 131   N(CPP_DIRECTIVE,      0)      /* #define and the like */      \
 132   N(CPP_MACRO,          0)      /* Like a NAME, but expanded.  */
 133
 134 #define T(e, s) e,
 135 #define I(e, s) e,
 136 #define S(e, s) e,
 137 #define C(e, s) e,
 138 #define N(e, s) e,
 139 enum cpp_ttype
 140 {
 141   TTYPE_TABLE
 142   N_TTYPES
 143 };
 144 #undef T
 145 #undef I
 146 #undef S
 147 #undef C
 148 #undef N
 149
 150 /* Payload of a NAME, NUMBER, FLOAT, STRING, or COMMENT token.  */
 151 struct cpp_name
 152 {
 153   unsigned int len;
 154   const unsigned char *text;
 155 };
 156
 157 /* Accessor macros for token lists - all expect you have a
 158    list and an index.  */
 159
 160 #define TOK_TYPE(l_, i_)   ((l_)->tokens[i_].type)
 161 #define TOK_FLAGS(l_, i_)  ((l_)->tokens[i_].flags)
 162 #define TOK_AUX(l_, i_)    ((l_)->tokens[i_].aux)
 163 #define TOK_COL(l_, i_)    ((l_)->tokens[i_].col)
 164 #define TOK_INT(l_, i_)    ((l_)->tokens[i_].val.integer)
 165 #define TOK_NAME(l_, i_)   ((l_)->tokens[i_].val.name.text)
 166 #define TOK_LEN(l_, i_)    ((l_)->tokens[i_].val.name.len)
 167
 168 #define TOK_PREV_WHITE(l_, i_) (TOK_FLAGS(l_, i_) & PREV_WHITESPACE)
 169
 170 /* Flags for the cpp_token structure.  */
 171 #define PREV_WHITESPACE     1   /* If whitespace before this token.  */
 172 #define DIGRAPH             2   /* If it was a digraph.  */
 173 #define UNSIGNED_INT        4   /* If int preprocessing token unsigned.  */
 174
 175 /* A preprocessing token.  This has been carefully packed and should
 176    occupy 16 bytes on both 32- and 64-bit hosts.  */
 177 struct cpp_token
 178 {
 179   unsigned short col;                   /* starting column of this token */
 180   ENUM_BITFIELD(cpp_ttype) type : CHAR_BIT;  /* node type */
 181   unsigned char flags;                  /* flags - see above */
 182   unsigned int aux;                     /* CPP_OTHER character.  Hash of a
 183                                            NAME, or something - see uses
 184                                            in the code */
 185   union
 186   {
 187     struct cpp_name name;               /* a string */
 188     HOST_WIDEST_INT integer;            /* an integer */
 189   } val;
 190 };
 191
 192 /* Directive flags.  */
 193 #define SYNTAX_INCLUDE (1 << 8)
 194
 195 typedef int (*directive_handler) PARAMS ((cpp_reader *));
 196
 197 struct cpp_toklist
 198 {
 199   cpp_token *tokens;            /* actual tokens as an array */
 200   unsigned int tokens_used;     /* tokens used */
 201   unsigned int tokens_cap;      /* tokens allocated */
 202
 203   unsigned char *namebuf;       /* names buffer */
 204   unsigned int name_used;       /* _bytes_ used */
 205   unsigned int name_cap;        /* _bytes_ allocated */
 206
 207   unsigned int line;            /* starting line number */
 208
 209   /* Comment copying.  */
 210   cpp_token *comments;          /* comment tokens.  */
 211   unsigned int comments_used;   /* comment tokens used.  */
 212   unsigned int comments_cap;    /* comment token capacity.  */
 213
 214   /* Only used if tokens[0].type == CPP_DIRECTIVE.  This is the
 215      handler to call after lexing the rest of this line.  The flags
 216      indicate whether the rest of the line gets special treatment
 217      during lexing (#include, #if, #assert, #unassert).  */
 218   directive_handler dir_handler;
 219   unsigned short dir_flags;
 220 };
 221
 222 struct cpp_buffer
 223 {
 224   const unsigned char *cur;      /* current position */
 225   const unsigned char *rlimit; /* end of valid data */
 226   const unsigned char *buf;      /* entire buffer */
 227   const unsigned char *line_base; /* start of current line */
 228   const unsigned char *mark;  /* Saved position for lengthy backtrack. */
 229
 230   struct cpp_buffer *prev;
 231
 232   /* Filename specified with #line command.  */
 233   const char *nominal_fname;
 234   /* Actual directory of this file, used only for "" includes */
 235   struct file_name_list *actual_dir;
 236
 237   /* Pointer into the include hash table.  Used for include_next and
 238      to record control macros. */
 239   struct ihash *ihash;
 240
 241   /* If the buffer is the expansion of a macro, this points to the
 242      macro's hash table entry.  */
 243   struct hashnode *macro;
 244
 245   /* Value of if_stack at start of this file.
 246      Used to prohibit unmatched #endif (etc) in an include file.  */
 247   struct if_stack *if_stack;
 248
 249   /* Line number at line_base (above). */
 250   unsigned int lineno;
 251
 252   /* True if this is a header file included using <FILENAME>.  */
 253   char system_header_p;
 254
 255   /* True if buffer contains escape sequences.
 256      Currently there are two kinds:
 257      "\r-" means following identifier should not be macro-expanded.
 258      "\r " means a token-separator.  This turns into " " in final output
 259           if not stringizing and needed to separate tokens; otherwise nothing.
 260      Any other two-character sequence beginning with \r is an error.
 261
 262      If this is NOT set, then \r is a one-character escape meaning backslash
 263      newline.  This is guaranteed not to occur in the middle of a token.
 264      The two interpretations of \r do not conflict, because the two-character
 265      escapes are used only in macro buffers, and backslash-newline is removed
 266      from macro expansion text in collect_expansion and/or macarg.  */
 267   char has_escapes;
 268
 269   /* True if we have already warned about C++ comments in this file.
 270      The warning happens only for C89 extended mode with -pedantic on,
 271      or for -Wtraditional, and only once per file (otherwise it would
 272      be far too noisy).  */
 273   char warned_cplusplus_comments;
 274
 275   /* In a file buffer, true if this buffer's data is mmapped
 276      (currently never the case).  In a macro buffer, true if this
 277      buffer's data must be freed.  */
 278   char mapped;
 279 };
 280
 281 struct file_name_map_list;
 282 struct htab;
 283
 284 /* Maximum nesting of cpp_buffers.  We use a static limit, partly for
 285    efficiency, and partly to limit runaway recursion.  */
 286 #define CPP_STACK_MAX 200
 287
 288 /* Values for opts.dump_macros.
 289   dump_only means inhibit output of the preprocessed text
 290              and instead output the definitions of all user-defined
 291              macros in a form suitable for use as input to cpp.
 292    dump_names means pass #define and the macro name through to output.
 293    dump_definitions means pass the whole definition (plus #define) through
 294 */
 295 enum { dump_none = 0, dump_only, dump_names, dump_definitions };
 296
 297 /* This structure is nested inside struct cpp_reader, and
 298    carries all the options visible to the command line.  */
 299 struct cpp_options
 300 {
 301   /* Name of input and output files.  */
 302   const char *in_fname;
 303   const char *out_fname;
 304
 305   /* Pending options - -D, -U, -A, -I, -ixxx. */
 306   struct cpp_pending *pending;
 307
 308   /* File name which deps are being written to.  This is 0 if deps are
 309      being written to stdout.  */
 310   const char *deps_file;
 311
 312   /* Target-name to write with the dependency information.  */
 313   char *deps_target;
 314
 315   /* Search paths for include files.  */
 316   struct file_name_list *quote_include;  /* First dir to search for "file" */
 317   struct file_name_list *bracket_include;/* First dir to search for <file> */
 318
 319   /* Map between header names and file names, used only on DOS where
 320      file names are limited in length.  */
 321   struct file_name_map_list *map_list;
 322
 323   /* Directory prefix that should replace `/usr/lib/gcc-lib/TARGET/VERSION'
 324      in the standard include file directories.  */
 325   const char *include_prefix;
 326   unsigned int include_prefix_len;
 327
 328   /* Non-0 means -v, so print the full set of include dirs.  */
 329   unsigned char verbose;
 330
 331   /* Nonzero means use extra default include directories for C++.  */
 332   unsigned char cplusplus;
 333
 334   /* Nonzero means handle cplusplus style comments */
 335   unsigned char cplusplus_comments;
 336
 337   /* Nonzero means handle #import, for objective C.  */
 338   unsigned char objc;
 339
 340   /* Nonzero means this is an assembly file, so ignore unrecognized
 341      directives and the "# 33" form of #line, both of which are
 342      probably comments.  Also, permit unbalanced ' strings (again,
 343      likely to be in comments).  */
 344   unsigned char lang_asm;
 345
 346   /* Nonzero means this is Fortran, and we don't know where the
 347      comments are, so permit unbalanced ' strings.  Unlike lang_asm,
 348      this does not ignore unrecognized directives.  */
 349   unsigned char lang_fortran;
 350
 351   /* Nonzero means handle CHILL comment syntax and output CHILL string
 352      delimiters for __DATE__ etc. */
 353   unsigned char chill;
 354
 355   /* Nonzero means don't copy comments into the output file.  */
 356   unsigned char discard_comments;
 357
 358   /* Nonzero means process the ANSI trigraph sequences.  */
 359   unsigned char trigraphs;
 360
 361   /* Nonzero means print the names of included files rather than the
 362      preprocessed output.  1 means just the #include "...", 2 means
 363      #include <...> as well.  */
 364   unsigned char print_deps;
 365
 366   /* Nonzero if missing .h files in -M output are assumed to be
 367      generated files and not errors.  */
 368   unsigned char print_deps_missing_files;
 369
 370   /* If true, fopen (deps_file, "a") else fopen (deps_file, "w"). */
 371   unsigned char print_deps_append;
 372
 373   /* Nonzero means print names of header files (-H).  */
 374   unsigned char print_include_names;
 375
 376   /* Nonzero means cpp_pedwarn causes a hard error.  */
 377   unsigned char pedantic_errors;
 378
 379   /* Nonzero means don't print warning messages.  */
 380   unsigned char inhibit_warnings;
 381
 382   /* Nonzero means don't print error messages.  Has no option to
 383      select it, but can be set by a user of cpplib (e.g. fix-header).  */
 384   unsigned char inhibit_errors;
 385
 386   /* Nonzero means warn if slash-star appears in a comment.  */
 387   unsigned char warn_comments;
 388
 389   /* Nonzero means warn if there are any trigraphs.  */
 390   unsigned char warn_trigraphs;
 391
 392   /* Nonzero means warn if #import is used.  */
 393   unsigned char warn_import;
 394
 395   /* Nonzero means warn if a macro argument is (or would be)
 396      stringified with -traditional, and warn about directives
 397      with the # indented from the beginning of the line.  */
 398   unsigned char warn_traditional;
 399
 400   /* Nonzero means turn warnings into errors.  */
 401   unsigned char warnings_are_errors;
 402
 403   /* Nonzero causes output not to be done, but directives such as
 404      #define that have side effects are still obeyed.  */
 405   unsigned char no_output;
 406
 407   /* Nonzero means we should look for header.gcc files that remap file
 408      names.  */
 409   unsigned char remap;
 410
 411   /* Nonzero means don't output line number information.  */
 412   unsigned char no_line_commands;
 413
 414   /* Nonzero means -I- has been seen, so don't look for #include "foo"
 415      the source-file directory.  */
 416   unsigned char ignore_srcdir;
 417
 418   /* Zero means dollar signs are punctuation. */
 419   unsigned char dollars_in_ident;
 420
 421   /* Nonzero means try to imitate old fashioned non-ANSI preprocessor.  */
 422   unsigned char traditional;
 423
 424   /* Nonzero means warn if undefined identifiers are evaluated in an #if.  */
 425   unsigned char warn_undef;
 426
 427   /* Nonzero for the 1989 C Standard, including corrigenda and amendments.  */
 428   unsigned char c89;
 429
 430   /* Nonzero for the 1999 C Standard, including corrigenda and amendments.  */
 431   unsigned char c99;
 432
 433   /* Nonzero means give all the error messages the ANSI standard requires.  */
 434   unsigned char pedantic;
 435
 436   /* Nonzero means we're looking at already preprocessed code, so don't
 437      bother trying to do macro expansion and whatnot.  */
 438   unsigned char preprocessed;
 439
 440   /* Nonzero disables all the standard directories for headers.  */
 441   unsigned char no_standard_includes;
 442
 443   /* Nonzero disables the C++-specific standard directories for headers.  */
 444   unsigned char no_standard_cplusplus_includes;
 445
 446   /* Nonzero means dump macros in some fashion - see above.  */
 447   unsigned char dump_macros;
 448
 449   /* Nonzero means pass all #define and #undef directives which we
 450      actually process through to the output stream.  This feature is
 451      used primarily to allow cc1 to record the #defines and #undefs
 452      for the sake of debuggers which understand about preprocessor
 453      macros, but it may also be useful with -E to figure out how
 454      symbols are defined, and where they are defined.  */
 455   unsigned char debug_output;
 456
 457   /* Nonzero means pass #include lines through to the output.  */
 458   unsigned char dump_includes;
 459
 460   /* Print column number in error messages.  */
 461   unsigned char show_column;
 462 };
 463
 464
 465 /* A cpp_reader encapsulates the "state" of a pre-processor run.
 466    Applying cpp_get_token repeatedly yields a stream of pre-processor
 467    tokens.  Usually, there is only one cpp_reader object active. */
 468
 469 struct cpp_reader
 470 {
 471   /* Top of buffer stack.  */
 472   cpp_buffer *buffer;
 473
 474   /* Token list used by get_directive_token.  */
 475   cpp_toklist directbuf;
 476
 477   /* A buffer used for both for cpp_get_token's output, and also internally. */
 478   unsigned char *token_buffer;
 479   /* Allocated size of token_buffer.  CPP_RESERVE allocates space.  */
 480   unsigned int token_buffer_size;
 481   /* End of the written part of token_buffer. */
 482   unsigned char *limit;
 483
 484   /* Error counter for exit code */
 485   unsigned int errors;
 486
 487   /* Line where a newline was first seen in a string constant.  */
 488   unsigned int multiline_string_line;
 489
 490   /* Current depth in #include directives that use <...>.  */
 491   unsigned int system_include_depth;
 492
 493   /* Current depth of buffer stack. */
 494   unsigned int buffer_stack_depth;
 495
 496   /* Hash table of macros and assertions.  See cpphash.c */
 497   struct htab *hashtab;
 498
 499   /* Hash table of other included files.  See cppfiles.c */
 500   struct htab *all_include_files;
 501
 502   /* Chain of `actual directory' file_name_list entries,
 503      for "" inclusion. */
 504   struct file_name_list *actual_dirs;
 505
 506   /* Current maximum length of directory names in the search path
 507      for include files.  (Altered as we get more of them.)  */
 508   unsigned int max_include_len;
 509
 510   struct if_stack *if_stack;
 511   const unsigned char *potential_control_macro;
 512
 513   /* Buffer of -M output.  */
 514   struct deps *deps;
 515
 516   /* A buffer used only by read_and_prescan (in cppfiles.c), which is
 517      allocated once per cpp_reader object to keep it off the stack.  */
 518   unsigned char *input_buffer;
 519   size_t input_buffer_len;
 520
 521   /* User visible options.  */
 522   struct cpp_options opts;
 523
 524   /* Nonzero means we have printed (while error reporting) a list of
 525      containing files that matches the current status.  */
 526   unsigned char input_stack_listing_current;
 527
 528   /* If non-zero, macros are not expanded.  */
 529   unsigned char no_macro_expand;
 530
 531   /* If non-zero, directives cause a hard error.  Used when parsing
 532      macro arguments.  */
 533   unsigned char no_directives;
 534
 535   /* We're printed a warning recommending against using #import.  */
 536   unsigned char import_warning;
 537
 538   /* If true, characters between '<' and '>' are a single (string) token.  */
 539   unsigned char parsing_include_directive;
 540
 541   /* If true, # introduces an assertion (see do_assert) */
 542   unsigned char parsing_if_directive;
 543
 544   /* If true, # and ## are the STRINGIZE and TOKPASTE operators */
 545   unsigned char parsing_define_directive;
 546
 547   /* True if escape sequences (as described for has_escapes in
 548      parse_buffer) should be emitted.  */
 549   unsigned char output_escapes;
 550
 551   /* 0: Have seen non-white-space on this line.
 552      1: Only seen white space so far on this line.
 553      2: Only seen white space so far in this file.  */
 554   unsigned char only_seen_white;
 555
 556   /* True after cpp_start_read completes.  Used to inhibit some
 557      warnings while parsing the command line.  */
 558   unsigned char done_initializing;
 559 };
 560
 561 /* struct cpp_printer encapsulates state used to convert the stream of
 562    tokens coming from cpp_get_token back into a text file.  Not
 563    everyone wants to do that, hence we separate the function.  */
 564
 565 struct cpp_printer
 566 {
 567   FILE *outf;                   /* stream to write to */
 568   const char *last_fname;       /* previous file name */
 569   unsigned int last_bsd;        /* did we just push? */
 570   unsigned int lineno;          /* line currently being written */
 571   unsigned int written;         /* low water mark in token buffer */
 572 };
 573
 574 #define CPP_FATAL_LIMIT 1000
 575 /* True if we have seen a "fatal" error. */
 576 #define CPP_FATAL_ERRORS(READER) ((READER)->errors >= CPP_FATAL_LIMIT)
 577
 578 /* Macros for manipulating the token_buffer. */
 579
 580 /* Number of characters currently in PFILE's output buffer. */
 581 #define CPP_WRITTEN(PFILE) ((size_t)((PFILE)->limit - (PFILE)->token_buffer))
 582 #define CPP_PWRITTEN(PFILE) ((PFILE)->limit)
 583 #define CPP_ADJUST_WRITTEN(PFILE,DELTA) ((PFILE)->limit += (DELTA))
 584 #define CPP_SET_WRITTEN(PFILE,N) ((PFILE)->limit = (PFILE)->token_buffer + (N))
 585
 586 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
 587 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
 588 #define CPP_BUF_LINE(BUF) ((BUF)->lineno)
 589 #define CPP_BUF_COL(BUF) ((BUF)->cur - (BUF)->line_base)
 590
 591 /* Name under which this program was invoked.  */
 592 extern const char *progname;
 593
 594 extern void _cpp_lex_file PARAMS((cpp_reader *));
 595 extern int cpp_handle_options PARAMS ((cpp_reader *, int, char **));
 596 extern enum cpp_ttype cpp_get_token PARAMS ((cpp_reader *));
 597 extern enum cpp_ttype cpp_get_non_space_token PARAMS ((cpp_reader *));
 598
 599 extern void cpp_reader_init PARAMS ((cpp_reader *));
 600 extern cpp_printer *cpp_printer_init PARAMS ((cpp_reader *, cpp_printer *));
 601 extern int cpp_start_read PARAMS ((cpp_reader *, cpp_printer *, const char *));
 602 extern void cpp_output_tokens PARAMS ((cpp_reader *, cpp_printer *));
 603 extern void cpp_output_list PARAMS ((cpp_reader *, cpp_printer *,
 604                                      const cpp_toklist *));
 605 extern void cpp_finish PARAMS ((cpp_reader *, cpp_printer *));
 606 extern void cpp_cleanup PARAMS ((cpp_reader *));
 607
 608 extern cpp_buffer *cpp_file_buffer PARAMS((cpp_reader *));
 609 extern void cpp_define PARAMS ((cpp_reader *, const char *));
 610 extern void cpp_assert PARAMS ((cpp_reader *, const char *));
 611 extern void cpp_undef  PARAMS ((cpp_reader *, const char *));
 612 extern void cpp_unassert PARAMS ((cpp_reader *, const char *));
 613
 614 extern void cpp_free_token_list PARAMS ((cpp_toklist *));
 615
 616 /* N.B. The error-message-printer prototypes have not been nicely
 617    formatted because exgettext needs to see 'msgid' on the same line
 618    as the name of the function in order to work properly.  Only the
 619    string argument gets a name in an effort to keep the lines from
 620    getting ridiculously oversized.  */
 621
 622 extern void cpp_ice PARAMS ((cpp_reader *, const char *msgid, ...))
 623   ATTRIBUTE_PRINTF_2;
 624 extern void cpp_fatal PARAMS ((cpp_reader *, const char *msgid, ...))
 625   ATTRIBUTE_PRINTF_2;
 626 extern void cpp_error PARAMS ((cpp_reader *, const char *msgid, ...))
 627   ATTRIBUTE_PRINTF_2;
 628 extern void cpp_warning PARAMS ((cpp_reader *, const char *msgid, ...))
 629   ATTRIBUTE_PRINTF_2;
 630 extern void cpp_pedwarn PARAMS ((cpp_reader *, const char *msgid, ...))
 631   ATTRIBUTE_PRINTF_2;
 632 extern void cpp_notice PARAMS ((cpp_reader *, const char *msgid, ...))
 633   ATTRIBUTE_PRINTF_2;
 634 extern void cpp_error_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
 635   ATTRIBUTE_PRINTF_4;
 636 extern void cpp_warning_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
 637   ATTRIBUTE_PRINTF_4;
 638 extern void cpp_pedwarn_with_line PARAMS ((cpp_reader *, int, int, const char *msgid, ...))
 639   ATTRIBUTE_PRINTF_4;
 640 extern void cpp_pedwarn_with_file_and_line PARAMS ((cpp_reader *, const char *, int, int, const char *msgid, ...))
 641   ATTRIBUTE_PRINTF_5;
 642 extern void cpp_error_from_errno        PARAMS ((cpp_reader *, const char *));
 643 extern void cpp_notice_from_errno       PARAMS ((cpp_reader *, const char *));
 644
 645 /* In cpplex.c */
 646 extern cpp_buffer *cpp_push_buffer      PARAMS ((cpp_reader *,
 647                                                  const unsigned char *, long));
 648 extern cpp_buffer *cpp_pop_buffer       PARAMS ((cpp_reader *));
 649 extern void cpp_scan_buffer             PARAMS ((cpp_reader *, cpp_printer *));
 650 extern void cpp_scan_buffer_nooutput    PARAMS ((cpp_reader *));
 651 extern int cpp_idcmp                    PARAMS ((const unsigned char *,
 652                                                  size_t, const char *));
 653
 654 /* In cpphash.c */
 655 extern int cpp_defined                  PARAMS ((cpp_reader *,
 656                                                  const unsigned char *, int));
 657
 658 /* In cppfiles.c */
 659 extern int cpp_included                 PARAMS ((cpp_reader *, const char *));
 660 extern int cpp_read_file                PARAMS ((cpp_reader *, const char *));
 661
 662 #ifdef __cplusplus
 663 }
 664 #endif
 665 #endif /* __GCC_CPPLIB__ */