gcc/cpphash.h

   1 /* Part of CPP library.
   2    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002
   3    Free Software Foundation, Inc.
   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 /* This header defines all the internal data structures and functions
  20    that need to be visible across files.  It's called cpphash.h for
  21    historical reasons.  */
  22
  23 #ifndef GCC_CPPHASH_H
  24 #define GCC_CPPHASH_H
  25
  26 #include "hashtable.h"
  27
  28 struct directive;               /* Deliberately incomplete.  */
  29 struct pending_option;
  30 struct op;
  31
  32 #ifndef HAVE_UCHAR
  33 typedef unsigned char uchar;
  34 #endif
  35 #define U (const uchar *)  /* Intended use: U"string" */
  36
  37 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
  38
  39 /* Test if a sign is valid within a preprocessing number.  */
  40 #define VALID_SIGN(c, prevc) \
  41   (((c) == '+' || (c) == '-') && \
  42    ((prevc) == 'e' || (prevc) == 'E' \
  43     || (((prevc) == 'p' || (prevc) == 'P') \
  44         && CPP_OPTION (pfile, extended_numbers))))
  45
  46 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
  47 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
  48 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base + (BUF)->col_adjust)
  49 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
  50
  51 /* Maximum nesting of cpp_buffers.  We use a static limit, partly for
  52    efficiency, and partly to limit runaway recursion.  */
  53 #define CPP_STACK_MAX 200
  54
  55 /* Host alignment handling.  */
  56 struct dummy
  57 {
  58   char c;
  59   union
  60   {
  61     double d;
  62     int *p;
  63   } u;
  64 };
  65
  66 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
  67 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
  68 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
  69
  70 /* Each macro definition is recorded in a cpp_macro structure.
  71    Variadic macros cannot occur with traditional cpp.  */
  72 struct cpp_macro
  73 {
  74   /* Parameters, if any.  */
  75   cpp_hashnode **params;
  76
  77   /* Replacement tokens (ISO) or replacement text (traditional).  See
  78      comment at top of cpptrad.c for how traditional function-like
  79      macros are encoded.  */
  80   union
  81   {
  82     cpp_token *tokens;
  83     const uchar *text;
  84   } exp;
  85
  86   /* Definition line number.  */
  87   unsigned int line;
  88
  89   /* Number of tokens in expansion, or bytes for traditional macros.  */
  90   unsigned int count;
  91
  92   /* Number of parameters.  */
  93   unsigned short paramc;
  94
  95   /* If a function-like macro.  */
  96   unsigned int fun_like : 1;
  97
  98   /* If a variadic macro.  */
  99   unsigned int variadic : 1;
 100
 101   /* If macro defined in system header.  */
 102   unsigned int syshdr   : 1;
 103
 104   /* Nonzero if it has been expanded or had its existence tested.  */
 105   unsigned int used     : 1;
 106 };
 107
 108 #define _cpp_mark_macro_used(NODE) do {                                 \
 109   if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN))      \
 110     (NODE)->value.macro->used = 1; } while (0)
 111
 112 /* A generic memory buffer, and operations on it.  */
 113 typedef struct _cpp_buff _cpp_buff;
 114 struct _cpp_buff
 115 {
 116   struct _cpp_buff *next;
 117   unsigned char *base, *cur, *limit;
 118 };
 119
 120 extern _cpp_buff *_cpp_get_buff PARAMS ((cpp_reader *, size_t));
 121 extern void _cpp_release_buff PARAMS ((cpp_reader *, _cpp_buff *));
 122 extern void _cpp_extend_buff PARAMS ((cpp_reader *, _cpp_buff **, size_t));
 123 extern _cpp_buff *_cpp_append_extend_buff PARAMS ((cpp_reader *, _cpp_buff *,
 124                                                    size_t));
 125 extern void _cpp_free_buff PARAMS ((_cpp_buff *));
 126 extern unsigned char *_cpp_aligned_alloc PARAMS ((cpp_reader *, size_t));
 127 extern unsigned char *_cpp_unaligned_alloc PARAMS ((cpp_reader *, size_t));
 128
 129 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
 130 #define BUFF_FRONT(BUFF) ((BUFF)->cur)
 131 #define BUFF_LIMIT(BUFF) ((BUFF)->limit)
 132
 133 /* List of directories to look for include files in.  */
 134 struct search_path
 135 {
 136   struct search_path *next;
 137
 138   /* NOTE: NAME may not be null terminated for the case of the current
 139      file's directory!  */
 140   const char *name;
 141   unsigned int len;
 142   /* We use these to tell if the directory mentioned here is a duplicate
 143      of an earlier directory on the search path.  */
 144   ino_t ino;
 145   dev_t dev;
 146   /* Nonzero if it is a system include directory.  */
 147   int sysp;
 148   /* Mapping of file names for this directory.  Only used on MS-DOS
 149      and related platforms.  */
 150   struct file_name_map *name_map;
 151 };
 152
 153 /* #include types.  */
 154 enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
 155
 156 union utoken
 157 {
 158   const cpp_token *token;
 159   const cpp_token **ptoken;
 160 };
 161
 162 /* A "run" of tokens; part of a chain of runs.  */
 163 typedef struct tokenrun tokenrun;
 164 struct tokenrun
 165 {
 166   tokenrun *next, *prev;
 167   cpp_token *base, *limit;
 168 };
 169
 170 /* Accessor macros for struct cpp_context.  */
 171 #define FIRST(c) ((c)->u.iso.first)
 172 #define LAST(c) ((c)->u.iso.last)
 173 #define CUR(c) ((c)->u.trad.cur)
 174 #define RLIMIT(c) ((c)->u.trad.rlimit)
 175
 176 typedef struct cpp_context cpp_context;
 177 struct cpp_context
 178 {
 179   /* Doubly-linked list.  */
 180   cpp_context *next, *prev;
 181
 182   union
 183   {
 184     /* For ISO macro expansion.  Contexts other than the base context
 185        are contiguous tokens.  e.g. macro expansions, expanded
 186        argument tokens.  */
 187     struct
 188     {
 189       union utoken first;
 190       union utoken last;
 191     } iso;
 192
 193     /* For traditional macro expansion.  */
 194     struct
 195     {
 196       const uchar *cur;
 197       const uchar *rlimit;
 198     } trad;
 199   } u;
 200
 201   /* If non-NULL, a buffer used for storage related to this context.
 202      When the context is popped, the buffer is released.  */
 203   _cpp_buff *buff;
 204
 205   /* For a macro context, the macro node, otherwise NULL.  */
 206   cpp_hashnode *macro;
 207
 208   /* True if utoken element is token, else ptoken.  */
 209   bool direct_p;
 210 };
 211
 212 struct lexer_state
 213 {
 214   /* Nonzero if first token on line is CPP_HASH.  */
 215   unsigned char in_directive;
 216
 217   /* True if we are skipping a failed conditional group.  */
 218   unsigned char skipping;
 219
 220   /* Nonzero if in a directive that takes angle-bracketed headers.  */
 221   unsigned char angled_headers;
 222
 223   /* Nonzero if in a #if or #elif directive.  */
 224   unsigned char in_expression;
 225
 226   /* Nonzero to save comments.  Turned off if discard_comments, and in
 227      all directives apart from #define.  */
 228   unsigned char save_comments;
 229
 230   /* Nonzero if we're mid-comment.  */
 231   unsigned char lexing_comment;
 232
 233   /* Nonzero if lexing __VA_ARGS__ is valid.  */
 234   unsigned char va_args_ok;
 235
 236   /* Nonzero if lexing poisoned identifiers is valid.  */
 237   unsigned char poisoned_ok;
 238
 239   /* Nonzero to prevent macro expansion.  */
 240   unsigned char prevent_expansion;
 241
 242   /* Nonzero when parsing arguments to a function-like macro.  */
 243   unsigned char parsing_args;
 244
 245   /* Nonzero to skip evaluating part of an expression.  */
 246   unsigned int skip_eval;
 247 };
 248
 249 /* Special nodes - identifiers with predefined significance.  */
 250 struct spec_nodes
 251 {
 252   cpp_hashnode *n_defined;              /* defined operator */
 253   cpp_hashnode *n_true;                 /* C++ keyword true */
 254   cpp_hashnode *n_false;                /* C++ keyword false */
 255   cpp_hashnode *n__VA_ARGS__;           /* C99 vararg macros */
 256 };
 257
 258 /* Encapsulates state used to convert a stream of tokens into a text
 259    file.  */
 260 struct printer
 261 {
 262   FILE *outf;                   /* Stream to write to.  */
 263   const struct line_map *map;   /* Logical to physical line mappings.  */
 264   const cpp_token *prev;        /* Previous token.  */
 265   const cpp_token *source;      /* Source token for spacing.  */
 266   unsigned int line;            /* Line currently being written.  */
 267   unsigned char printed;        /* Nonzero if something output at line.  */
 268 };
 269
 270 /* Represents the contents of a file cpplib has read in.  */
 271 struct cpp_buffer
 272 {
 273   const unsigned char *cur;      /* current position */
 274   const unsigned char *backup_to; /* if peeked character is not wanted */
 275   const unsigned char *rlimit; /* end of valid data */
 276   const unsigned char *line_base; /* start of current line */
 277
 278   struct cpp_buffer *prev;
 279
 280   const unsigned char *buf;      /* Entire character buffer.  */
 281
 282   /* Pointer into the include table; non-NULL if this is a file
 283      buffer.  Used for include_next and to record control macros.  */
 284   struct include_file *inc;
 285
 286   /* Value of if_stack at start of this file.
 287      Used to prohibit unmatched #endif (etc) in an include file.  */
 288   struct if_stack *if_stack;
 289
 290   /* Token column position adjustment owing to tabs in whitespace.  */
 291   unsigned int col_adjust;
 292
 293   /* Contains PREV_WHITE and/or AVOID_LPASTE.  */
 294   unsigned char saved_flags;
 295
 296   /* Because of the way the lexer works, -Wtrigraphs can sometimes
 297      warn twice for the same trigraph.  This helps prevent that.  */
 298   const unsigned char *last_Wtrigraphs;
 299
 300   /* True if we have already warned about C++ comments in this file.
 301      The warning happens only for C89 extended mode with -pedantic on,
 302      or for -Wtraditional, and only once per file (otherwise it would
 303      be far too noisy).  */
 304   unsigned char warned_cplusplus_comments;
 305
 306   /* True if we don't process trigraphs and escaped newlines.  True
 307      for preprocessed input, command line directives, and _Pragma
 308      buffers.  */
 309   unsigned char from_stage3;
 310
 311   /* Nonzero means that the directory to start searching for ""
 312      include files has been calculated and stored in "dir" below.  */
 313   unsigned char search_cached;
 314
 315   /* At EOF, a buffer is automatically popped.  If RETURN_AT_EOF is
 316      true, a CPP_EOF token is then returned.  Otherwise, the next
 317      token from the enclosing buffer is returned.  */
 318   bool return_at_eof;
 319
 320   /* The directory of the this buffer's file.  Its NAME member is not
 321      allocated, so we don't need to worry about freeing it.  */
 322   struct search_path dir;
 323
 324   /* Used for buffer overlays by cpptrad.c.  */
 325   const uchar *saved_cur, *saved_rlimit;
 326 };
 327
 328 /* A cpp_reader encapsulates the "state" of a pre-processor run.
 329    Applying cpp_get_token repeatedly yields a stream of pre-processor
 330    tokens.  Usually, there is only one cpp_reader object active.  */
 331 struct cpp_reader
 332 {
 333   /* Top of buffer stack.  */
 334   cpp_buffer *buffer;
 335
 336   /* Overlaid buffer (can be different after processing #include).  */
 337   cpp_buffer *overlaid_buffer;
 338
 339   /* Lexer state.  */
 340   struct lexer_state state;
 341
 342   /* Source line tracking.  */
 343   struct line_maps line_maps;
 344   const struct line_map *map;
 345   unsigned int line;
 346
 347   /* The line of the '#' of the current directive.  */
 348   unsigned int directive_line;
 349
 350   /* Memory buffers.  */
 351   _cpp_buff *a_buff;            /* Aligned permanent storage.  */
 352   _cpp_buff *u_buff;            /* Unaligned permanent storage.  */
 353   _cpp_buff *free_buffs;        /* Free buffer chain.  */
 354
 355   /* Context stack.  */
 356   struct cpp_context base_context;
 357   struct cpp_context *context;
 358
 359   /* If in_directive, the directive if known.  */
 360   const struct directive *directive;
 361
 362   /* The next -include-d file; NULL if they all are done.  If it
 363      points to NULL, the last one is in progress, and
 364      _cpp_maybe_push_include_file has yet to restore the line map.  */
 365   struct pending_option **next_include_file;
 366
 367   /* Multiple include optimisation.  */
 368   const cpp_hashnode *mi_cmacro;
 369   const cpp_hashnode *mi_ind_cmacro;
 370   bool mi_valid;
 371
 372   /* Lexing.  */
 373   cpp_token *cur_token;
 374   tokenrun base_run, *cur_run;
 375   unsigned int lookaheads;
 376
 377   /* Nonzero prevents the lexer from re-using the token runs.  */
 378   unsigned int keep_tokens;
 379
 380   /* Error counter for exit code.  */
 381   unsigned int errors;
 382
 383   /* Buffer to hold macro definition string.  */
 384   unsigned char *macro_buffer;
 385   unsigned int macro_buffer_len;
 386
 387   /* Tree of other included files.  See cppfiles.c.  */
 388   struct splay_tree_s *all_include_files;
 389
 390   /* Current maximum length of directory names in the search path
 391      for include files.  (Altered as we get more of them.)  */
 392   unsigned int max_include_len;
 393
 394   /* Macros on or after this line are warned about if unused.  */
 395   unsigned int first_unused_line;
 396
 397   /* Date and time text.  Calculated together if either is requested.  */
 398   const uchar *date;
 399   const uchar *time;
 400
 401   /* EOF token, and a token forcing paste avoidance.  */
 402   cpp_token avoid_paste;
 403   cpp_token eof;
 404
 405   /* Opaque handle to the dependencies of mkdeps.c.  */
 406   struct deps *deps;
 407
 408   /* Obstack holding all macro hash nodes.  This never shrinks.
 409      See cpphash.c */
 410   struct obstack hash_ob;
 411
 412   /* Obstack holding buffer and conditional structures.  This is a
 413      real stack.  See cpplib.c.  */
 414   struct obstack buffer_ob;
 415
 416   /* Pragma table - dynamic, because a library user can add to the
 417      list of recognized pragmas.  */
 418   struct pragma_entry *pragmas;
 419
 420   /* Call backs.  */
 421   struct cpp_callbacks cb;
 422
 423   /* Identifier hash table.  */
 424   struct ht *hash_table;
 425
 426   /* Expression parser stack.  */
 427   struct op *op_stack, *op_limit;
 428
 429   /* User visible options.  */
 430   struct cpp_options opts;
 431
 432   /* Special nodes - identifiers with predefined significance to the
 433      preprocessor.  */
 434   struct spec_nodes spec_nodes;
 435
 436   /* Used when doing preprocessed output.  */
 437   struct printer print;
 438
 439   /* Whether cpplib owns the hashtable.  */
 440   unsigned char our_hashtable;
 441
 442   /* Traditional preprocessing output buffer (a logical line).  */
 443   struct
 444   {
 445     uchar *base;
 446     uchar *limit;
 447     uchar *cur;
 448     unsigned int first_line;
 449   } out;
 450
 451   /* Used to save the original line number during traditional
 452      preprocessing.  */
 453   unsigned int saved_line;
 454
 455   /* A saved list of the defined macros, for dependency checking
 456      of precompiled headers.  */
 457   struct cpp_savedstate *savedstate;
 458 };
 459
 460 /* Character classes.  Based on the more primitive macros in safe-ctype.h.
 461    If the definition of `numchar' looks odd to you, please look up the
 462    definition of a pp-number in the C standard [section 6.4.8 of C99].
 463
 464    In the unlikely event that characters other than \r and \n enter
 465    the set is_vspace, the macro handle_newline() in cpplex.c must be
 466    updated.  */
 467 #define _dollar_ok(x)   ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
 468
 469 #define is_idchar(x)    (ISIDNUM(x) || _dollar_ok(x))
 470 #define is_numchar(x)   ISIDNUM(x)
 471 #define is_idstart(x)   (ISIDST(x) || _dollar_ok(x))
 472 #define is_numstart(x)  ISDIGIT(x)
 473 #define is_hspace(x)    ISBLANK(x)
 474 #define is_vspace(x)    IS_VSPACE(x)
 475 #define is_nvspace(x)   IS_NVSPACE(x)
 476 #define is_space(x)     IS_SPACE_OR_NUL(x)
 477
 478 /* This table is constant if it can be initialized at compile time,
 479    which is the case if cpp was compiled with GCC >=2.7, or another
 480    compiler that supports C99.  */
 481 #if HAVE_DESIGNATED_INITIALIZERS
 482 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
 483 #else
 484 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
 485 #endif
 486
 487 /* Macros.  */
 488
 489 #define CPP_IN_SYSTEM_HEADER(PFILE) ((PFILE)->map && (PFILE)->map->sysp)
 490 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
 491 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
 492
 493 /* In cpperror.c  */
 494 extern int _cpp_begin_message PARAMS ((cpp_reader *, int,
 495                                        unsigned int, unsigned int));
 496
 497 /* In cppmacro.c */
 498 extern void _cpp_free_definition        PARAMS ((cpp_hashnode *));
 499 extern bool _cpp_create_definition      PARAMS ((cpp_reader *, cpp_hashnode *));
 500 extern void _cpp_pop_context            PARAMS ((cpp_reader *));
 501 extern void _cpp_push_text_context      PARAMS ((cpp_reader *, cpp_hashnode *,
 502                                                  const uchar *, size_t));
 503 extern bool _cpp_save_parameter         PARAMS ((cpp_reader *, cpp_macro *,
 504                                                  cpp_hashnode *));
 505 extern bool _cpp_arguments_ok           PARAMS ((cpp_reader *, cpp_macro *,
 506                                                  const cpp_hashnode *,
 507                                                  unsigned int));
 508 extern const uchar *_cpp_builtin_macro_text PARAMS ((cpp_reader *,
 509                                                      cpp_hashnode *));
 510 int _cpp_warn_if_unused_macro           PARAMS ((cpp_reader *, cpp_hashnode *,
 511                                                  void *));
 512 /* In cpphash.c */
 513 extern void _cpp_init_hashtable         PARAMS ((cpp_reader *, hash_table *));
 514 extern void _cpp_destroy_hashtable      PARAMS ((cpp_reader *));
 515
 516 /* In cppfiles.c */
 517 extern void _cpp_fake_include           PARAMS ((cpp_reader *, const char *));
 518 extern void _cpp_never_reread           PARAMS ((struct include_file *));
 519 extern char *_cpp_simplify_pathname     PARAMS ((char *));
 520 extern bool _cpp_read_file              PARAMS ((cpp_reader *, const char *));
 521 extern bool _cpp_execute_include        PARAMS ((cpp_reader *,
 522                                                  const cpp_token *,
 523                                                  enum include_type));
 524 extern int _cpp_compare_file_date       PARAMS ((cpp_reader *,
 525                                                  const cpp_token *));
 526 extern void _cpp_report_missing_guards  PARAMS ((cpp_reader *));
 527 extern void _cpp_init_includes          PARAMS ((cpp_reader *));
 528 extern void _cpp_cleanup_includes       PARAMS ((cpp_reader *));
 529 extern void _cpp_pop_file_buffer        PARAMS ((cpp_reader *,
 530                                                  struct include_file *));
 531
 532 /* In cppexp.c */
 533 extern bool _cpp_parse_expr             PARAMS ((cpp_reader *));
 534 extern struct op *_cpp_expand_op_stack  PARAMS ((cpp_reader *));
 535
 536 /* In cpplex.c */
 537 extern cpp_token *_cpp_temp_token       PARAMS ((cpp_reader *));
 538 extern const cpp_token *_cpp_lex_token  PARAMS ((cpp_reader *));
 539 extern cpp_token *_cpp_lex_direct       PARAMS ((cpp_reader *));
 540 extern int _cpp_equiv_tokens            PARAMS ((const cpp_token *,
 541                                                  const cpp_token *));
 542 extern void _cpp_init_tokenrun          PARAMS ((tokenrun *, unsigned int));
 543
 544 /* In cppinit.c.  */
 545 extern void _cpp_maybe_push_include_file PARAMS ((cpp_reader *));
 546
 547 /* In cpplib.c */
 548 extern int _cpp_test_assertion PARAMS ((cpp_reader *, unsigned int *));
 549 extern int _cpp_handle_directive PARAMS ((cpp_reader *, int));
 550 extern void _cpp_define_builtin PARAMS ((cpp_reader *, const char *));
 551 extern char ** _cpp_save_pragma_names PARAMS ((cpp_reader *));
 552 extern void _cpp_restore_pragma_names PARAMS ((cpp_reader *, char **));
 553 extern void _cpp_do__Pragma     PARAMS ((cpp_reader *));
 554 extern void _cpp_init_directives PARAMS ((cpp_reader *));
 555 extern void _cpp_init_internal_pragmas PARAMS ((cpp_reader *));
 556 extern void _cpp_do_file_change PARAMS ((cpp_reader *, enum lc_reason,
 557                                          const char *,
 558                                          unsigned int, unsigned int));
 559 extern void _cpp_pop_buffer PARAMS ((cpp_reader *));
 560
 561 /* In cpptrad.c.  */
 562 extern bool _cpp_read_logical_line_trad PARAMS ((cpp_reader *));
 563 extern void _cpp_overlay_buffer PARAMS ((cpp_reader *pfile, const uchar *,
 564                                          size_t));
 565 extern void _cpp_remove_overlay PARAMS ((cpp_reader *));
 566 extern bool _cpp_create_trad_definition PARAMS ((cpp_reader *, cpp_macro *));
 567 extern bool _cpp_expansions_different_trad PARAMS ((const cpp_macro *,
 568                                                     const cpp_macro *));
 569 extern uchar *_cpp_copy_replacement_text PARAMS ((const cpp_macro *, uchar *));
 570 extern size_t _cpp_replacement_text_len PARAMS ((const cpp_macro *));
 571
 572 /* Utility routines and macros.  */
 573 #define DSC(str) (const uchar *)str, sizeof str - 1
 574 #define xnew(T)         (T *) xmalloc (sizeof(T))
 575 #define xcnew(T)        (T *) xcalloc (1, sizeof(T))
 576 #define xnewvec(T, N)   (T *) xmalloc (sizeof(T) * (N))
 577 #define xcnewvec(T, N)  (T *) xcalloc (N, sizeof(T))
 578 #define xobnew(O, T)    (T *) obstack_alloc (O, sizeof(T))
 579
 580 /* These are inline functions instead of macros so we can get type
 581    checking.  */
 582 static inline int ustrcmp       PARAMS ((const uchar *, const uchar *));
 583 static inline int ustrncmp      PARAMS ((const uchar *, const uchar *,
 584                                          size_t));
 585 static inline size_t ustrlen    PARAMS ((const uchar *));
 586 static inline uchar *uxstrdup   PARAMS ((const uchar *));
 587 static inline uchar *ustrchr    PARAMS ((const uchar *, int));
 588 static inline int ufputs        PARAMS ((const uchar *, FILE *));
 589
 590 static inline int
 591 ustrcmp (s1, s2)
 592      const uchar *s1, *s2;
 593 {
 594   return strcmp ((const char *)s1, (const char *)s2);
 595 }
 596
 597 static inline int
 598 ustrncmp (s1, s2, n)
 599      const uchar *s1, *s2;
 600      size_t n;
 601 {
 602   return strncmp ((const char *)s1, (const char *)s2, n);
 603 }
 604
 605 static inline size_t
 606 ustrlen (s1)
 607      const uchar *s1;
 608 {
 609   return strlen ((const char *)s1);
 610 }
 611
 612 static inline uchar *
 613 uxstrdup (s1)
 614      const uchar *s1;
 615 {
 616   return (uchar *) xstrdup ((const char *)s1);
 617 }
 618
 619 static inline uchar *
 620 ustrchr (s1, c)
 621      const uchar *s1;
 622      int c;
 623 {
 624   return (uchar *) strchr ((const char *)s1, c);
 625 }
 626
 627 static inline int
 628 ufputs (s, f)
 629      const uchar *s;
 630      FILE *f;
 631 {
 632   return fputs ((const char *)s, f);
 633 }
 634
 635 #endif /* ! GCC_CPPHASH_H */