gcc/cpphash.h

   1 /* Part of CPP library.
   2    Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
   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 #if defined HAVE_ICONV_H && defined HAVE_ICONV
  29 #include <iconv.h>
  30 #else
  31 #define HAVE_ICONV 0
  32 typedef int iconv_t;  /* dummy */
  33 #endif
  34
  35 struct directive;               /* Deliberately incomplete.  */
  36 struct pending_option;
  37 struct op;
  38 struct _cpp_strbuf;
  39
  40 typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t,
  41                            struct _cpp_strbuf *);
  42 struct cset_converter
  43 {
  44   convert_f func;
  45   iconv_t cd;
  46 };
  47
  48 #ifndef HAVE_UCHAR
  49 typedef unsigned char uchar;
  50 #endif
  51 #define U (const uchar *)  /* Intended use: U"string" */
  52
  53 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
  54
  55 /* Test if a sign is valid within a preprocessing number.  */
  56 #define VALID_SIGN(c, prevc) \
  57   (((c) == '+' || (c) == '-') && \
  58    ((prevc) == 'e' || (prevc) == 'E' \
  59     || (((prevc) == 'p' || (prevc) == 'P') \
  60         && CPP_OPTION (pfile, extended_numbers))))
  61
  62 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
  63 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
  64 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base)
  65 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
  66
  67 /* Maximum nesting of cpp_buffers.  We use a static limit, partly for
  68    efficiency, and partly to limit runaway recursion.  */
  69 #define CPP_STACK_MAX 200
  70
  71 /* Host alignment handling.  */
  72 struct dummy
  73 {
  74   char c;
  75   union
  76   {
  77     double d;
  78     int *p;
  79   } u;
  80 };
  81
  82 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
  83 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
  84 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
  85
  86 /* Each macro definition is recorded in a cpp_macro structure.
  87    Variadic macros cannot occur with traditional cpp.  */
  88 struct cpp_macro
  89 {
  90   /* Parameters, if any.  */
  91   cpp_hashnode **params;
  92
  93   /* Replacement tokens (ISO) or replacement text (traditional).  See
  94      comment at top of cpptrad.c for how traditional function-like
  95      macros are encoded.  */
  96   union
  97   {
  98     cpp_token *tokens;
  99     const uchar *text;
 100   } exp;
 101
 102   /* Definition line number.  */
 103   fileline line;
 104
 105   /* Number of tokens in expansion, or bytes for traditional macros.  */
 106   unsigned int count;
 107
 108   /* Number of parameters.  */
 109   unsigned short paramc;
 110
 111   /* If a function-like macro.  */
 112   unsigned int fun_like : 1;
 113
 114   /* If a variadic macro.  */
 115   unsigned int variadic : 1;
 116
 117   /* If macro defined in system header.  */
 118   unsigned int syshdr   : 1;
 119
 120   /* Nonzero if it has been expanded or had its existence tested.  */
 121   unsigned int used     : 1;
 122 };
 123
 124 #define _cpp_mark_macro_used(NODE) do {                                 \
 125   if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN))      \
 126     (NODE)->value.macro->used = 1; } while (0)
 127
 128 /* A generic memory buffer, and operations on it.  */
 129 typedef struct _cpp_buff _cpp_buff;
 130 struct _cpp_buff
 131 {
 132   struct _cpp_buff *next;
 133   unsigned char *base, *cur, *limit;
 134 };
 135
 136 extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t);
 137 extern void _cpp_release_buff (cpp_reader *, _cpp_buff *);
 138 extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t);
 139 extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t);
 140 extern void _cpp_free_buff (_cpp_buff *);
 141 extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t);
 142 extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t);
 143
 144 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
 145 #define BUFF_FRONT(BUFF) ((BUFF)->cur)
 146 #define BUFF_LIMIT(BUFF) ((BUFF)->limit)
 147
 148 /* #include types.  */
 149 enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
 150
 151 union utoken
 152 {
 153   const cpp_token *token;
 154   const cpp_token **ptoken;
 155 };
 156
 157 /* A "run" of tokens; part of a chain of runs.  */
 158 typedef struct tokenrun tokenrun;
 159 struct tokenrun
 160 {
 161   tokenrun *next, *prev;
 162   cpp_token *base, *limit;
 163 };
 164
 165 /* Accessor macros for struct cpp_context.  */
 166 #define FIRST(c) ((c)->u.iso.first)
 167 #define LAST(c) ((c)->u.iso.last)
 168 #define CUR(c) ((c)->u.trad.cur)
 169 #define RLIMIT(c) ((c)->u.trad.rlimit)
 170
 171 typedef struct cpp_context cpp_context;
 172 struct cpp_context
 173 {
 174   /* Doubly-linked list.  */
 175   cpp_context *next, *prev;
 176
 177   union
 178   {
 179     /* For ISO macro expansion.  Contexts other than the base context
 180        are contiguous tokens.  e.g. macro expansions, expanded
 181        argument tokens.  */
 182     struct
 183     {
 184       union utoken first;
 185       union utoken last;
 186     } iso;
 187
 188     /* For traditional macro expansion.  */
 189     struct
 190     {
 191       const uchar *cur;
 192       const uchar *rlimit;
 193     } trad;
 194   } u;
 195
 196   /* If non-NULL, a buffer used for storage related to this context.
 197      When the context is popped, the buffer is released.  */
 198   _cpp_buff *buff;
 199
 200   /* For a macro context, the macro node, otherwise NULL.  */
 201   cpp_hashnode *macro;
 202
 203   /* True if utoken element is token, else ptoken.  */
 204   bool direct_p;
 205 };
 206
 207 struct lexer_state
 208 {
 209   /* Nonzero if first token on line is CPP_HASH.  */
 210   unsigned char in_directive;
 211
 212   /* Nonzero if in a directive that will handle padding tokens itself.
 213      #include needs this to avoid problems with computed include and
 214      spacing between tokens.  */
 215   unsigned char directive_wants_padding;
 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 lexing __VA_ARGS__ is valid.  */
 231   unsigned char va_args_ok;
 232
 233   /* Nonzero if lexing poisoned identifiers is valid.  */
 234   unsigned char poisoned_ok;
 235
 236   /* Nonzero to prevent macro expansion.  */
 237   unsigned char prevent_expansion;
 238
 239   /* Nonzero when parsing arguments to a function-like macro.  */
 240   unsigned char parsing_args;
 241
 242   /* Nonzero to skip evaluating part of an expression.  */
 243   unsigned int skip_eval;
 244 };
 245
 246 /* Special nodes - identifiers with predefined significance.  */
 247 struct spec_nodes
 248 {
 249   cpp_hashnode *n_defined;              /* defined operator */
 250   cpp_hashnode *n_true;                 /* C++ keyword true */
 251   cpp_hashnode *n_false;                /* C++ keyword false */
 252   cpp_hashnode *n__VA_ARGS__;           /* C99 vararg macros */
 253 };
 254
 255 typedef struct _cpp_line_note _cpp_line_note;
 256 struct _cpp_line_note
 257 {
 258   /* Location in the clean line the note refers to.  */
 259   const uchar *pos;
 260
 261   /* Type of note.  The 9 'from' trigraph characters represent those
 262      trigraphs, '\\' an escaped newline, ' ' an escaped newline with
 263      intervening space, and anything else is invalid.  */
 264   unsigned int type;
 265 };
 266
 267 /* Represents the contents of a file cpplib has read in.  */
 268 struct cpp_buffer
 269 {
 270   const uchar *cur;             /* Current location.  */
 271   const uchar *line_base;       /* Start of current physical line.  */
 272   const uchar *next_line;       /* Start of to-be-cleaned logical line.  */
 273
 274   const uchar *buf;             /* Entire character buffer.  */
 275   const uchar *rlimit;          /* Writable byte at end of file.  */
 276
 277   _cpp_line_note *notes;        /* Array of notes.  */
 278   unsigned int cur_note;        /* Next note to process.  */
 279   unsigned int notes_used;      /* Number of notes.  */
 280   unsigned int notes_cap;       /* Size of allocated array.  */
 281
 282   struct cpp_buffer *prev;
 283
 284   /* Pointer into the file table; non-NULL if this is a file buffer.
 285      Used for include_next and to record control macros.  */
 286   struct _cpp_file *file;
 287
 288   /* Value of if_stack at start of this file.
 289      Used to prohibit unmatched #endif (etc) in an include file.  */
 290   struct if_stack *if_stack;
 291
 292   /* True if we need to get the next clean line.  */
 293   bool need_line;
 294
 295   /* True if we have already warned about C++ comments in this file.
 296      The warning happens only for C89 extended mode with -pedantic on,
 297      or for -Wtraditional, and only once per file (otherwise it would
 298      be far too noisy).  */
 299   unsigned char warned_cplusplus_comments;
 300
 301   /* True if we don't process trigraphs and escaped newlines.  True
 302      for preprocessed input, command line directives, and _Pragma
 303      buffers.  */
 304   unsigned char from_stage3;
 305
 306   /* Nonzero means that the directory to start searching for ""
 307      include files has been calculated and stored in "dir" below.  */
 308   unsigned char search_cached;
 309
 310   /* The directory of the this buffer's file.  Its NAME member is not
 311      allocated, so we don't need to worry about freeing it.  */
 312   struct cpp_dir dir;
 313
 314   /* Used for buffer overlays by cpptrad.c.  */
 315   const uchar *saved_cur, *saved_rlimit;
 316
 317   /* Descriptor for converting from the input character set to the
 318      source character set.  */
 319   struct cset_converter input_cset_desc;
 320 };
 321
 322 /* A cpp_reader encapsulates the "state" of a pre-processor run.
 323    Applying cpp_get_token repeatedly yields a stream of pre-processor
 324    tokens.  Usually, there is only one cpp_reader object active.  */
 325 struct cpp_reader
 326 {
 327   /* Top of buffer stack.  */
 328   cpp_buffer *buffer;
 329
 330   /* Overlaid buffer (can be different after processing #include).  */
 331   cpp_buffer *overlaid_buffer;
 332
 333   /* Lexer state.  */
 334   struct lexer_state state;
 335
 336   /* Source line tracking.  */
 337   struct line_maps *line_table;
 338   const struct line_map *map;
 339   fileline line;
 340
 341   /* The line of the '#' of the current directive.  */
 342   fileline directive_line;
 343
 344   /* Memory buffers.  */
 345   _cpp_buff *a_buff;            /* Aligned permanent storage.  */
 346   _cpp_buff *u_buff;            /* Unaligned permanent storage.  */
 347   _cpp_buff *free_buffs;        /* Free buffer chain.  */
 348
 349   /* Context stack.  */
 350   struct cpp_context base_context;
 351   struct cpp_context *context;
 352
 353   /* If in_directive, the directive if known.  */
 354   const struct directive *directive;
 355
 356   /* Search paths for include files.  */
 357   struct cpp_dir *quote_include;        /* "" */
 358   struct cpp_dir *bracket_include;      /* <> */
 359   struct cpp_dir no_search_path;        /* No path.  */
 360
 361   /* Chain of all hashed _cpp_file instances.  */
 362   struct _cpp_file *all_files;
 363
 364   struct _cpp_file *main_file;
 365
 366   /* File and directory hash table.  */
 367   struct htab *file_hash;
 368   struct file_hash_entry *file_hash_entries;
 369   unsigned int file_hash_entries_allocated, file_hash_entries_used;
 370
 371   /* Nonzero means don't look for #include "foo" the source-file
 372      directory.  */
 373   bool quote_ignores_source_dir;
 374
 375   /* Nonzero if any file has contained #pragma once or #import has
 376      been used.  */
 377   bool seen_once_only;
 378
 379   /* Multiple include optimization.  */
 380   const cpp_hashnode *mi_cmacro;
 381   const cpp_hashnode *mi_ind_cmacro;
 382   bool mi_valid;
 383
 384   /* Lexing.  */
 385   cpp_token *cur_token;
 386   tokenrun base_run, *cur_run;
 387   unsigned int lookaheads;
 388
 389   /* Nonzero prevents the lexer from re-using the token runs.  */
 390   unsigned int keep_tokens;
 391
 392   /* Error counter for exit code.  */
 393   unsigned int errors;
 394
 395   /* Buffer to hold macro definition string.  */
 396   unsigned char *macro_buffer;
 397   unsigned int macro_buffer_len;
 398
 399   /* Descriptor for converting from the source character set to the
 400      execution character set.  */
 401   struct cset_converter narrow_cset_desc;
 402
 403   /* Descriptor for converting from the source character set to the
 404      wide execution character set.  */
 405   struct cset_converter wide_cset_desc;
 406
 407   /* Date and time text.  Calculated together if either is requested.  */
 408   const uchar *date;
 409   const uchar *time;
 410
 411   /* EOF token, and a token forcing paste avoidance.  */
 412   cpp_token avoid_paste;
 413   cpp_token eof;
 414
 415   /* Opaque handle to the dependencies of mkdeps.c.  */
 416   struct deps *deps;
 417
 418   /* Obstack holding all macro hash nodes.  This never shrinks.
 419      See cpphash.c */
 420   struct obstack hash_ob;
 421
 422   /* Obstack holding buffer and conditional structures.  This is a
 423      real stack.  See cpplib.c.  */
 424   struct obstack buffer_ob;
 425
 426   /* Pragma table - dynamic, because a library user can add to the
 427      list of recognized pragmas.  */
 428   struct pragma_entry *pragmas;
 429
 430   /* Call backs to cpplib client.  */
 431   struct cpp_callbacks cb;
 432
 433   /* Identifier hash table.  */
 434   struct ht *hash_table;
 435
 436   /* Expression parser stack.  */
 437   struct op *op_stack, *op_limit;
 438
 439   /* User visible options.  */
 440   struct cpp_options opts;
 441
 442   /* Special nodes - identifiers with predefined significance to the
 443      preprocessor.  */
 444   struct spec_nodes spec_nodes;
 445
 446   /* Whether cpplib owns the hashtable.  */
 447   bool our_hashtable;
 448
 449   /* Traditional preprocessing output buffer (a logical line).  */
 450   struct
 451   {
 452     uchar *base;
 453     uchar *limit;
 454     uchar *cur;
 455     fileline first_line;
 456   } out;
 457
 458   /* Used to save the original line number during traditional
 459      preprocessing.  */
 460   unsigned int saved_line;
 461
 462   /* A saved list of the defined macros, for dependency checking
 463      of precompiled headers.  */
 464   struct cpp_savedstate *savedstate;
 465 };
 466
 467 /* Character classes.  Based on the more primitive macros in safe-ctype.h.
 468    If the definition of `numchar' looks odd to you, please look up the
 469    definition of a pp-number in the C standard [section 6.4.8 of C99].
 470
 471    In the unlikely event that characters other than \r and \n enter
 472    the set is_vspace, the macro handle_newline() in cpplex.c must be
 473    updated.  */
 474 #define _dollar_ok(x)   ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
 475
 476 #define is_idchar(x)    (ISIDNUM(x) || _dollar_ok(x))
 477 #define is_numchar(x)   ISIDNUM(x)
 478 #define is_idstart(x)   (ISIDST(x) || _dollar_ok(x))
 479 #define is_numstart(x)  ISDIGIT(x)
 480 #define is_hspace(x)    ISBLANK(x)
 481 #define is_vspace(x)    IS_VSPACE(x)
 482 #define is_nvspace(x)   IS_NVSPACE(x)
 483 #define is_space(x)     IS_SPACE_OR_NUL(x)
 484
 485 /* This table is constant if it can be initialized at compile time,
 486    which is the case if cpp was compiled with GCC >=2.7, or another
 487    compiler that supports C99.  */
 488 #if HAVE_DESIGNATED_INITIALIZERS
 489 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
 490 #else
 491 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
 492 #endif
 493
 494 /* Macros.  */
 495
 496 #define CPP_IN_SYSTEM_HEADER(PFILE) ((PFILE)->map && (PFILE)->map->sysp)
 497 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic)
 498 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional)
 499
 500 /* In cpperror.c  */
 501 extern int _cpp_begin_message (cpp_reader *, int, fileline, unsigned int);
 502
 503 /* In cppmacro.c */
 504 extern void _cpp_free_definition (cpp_hashnode *);
 505 extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
 506 extern void _cpp_pop_context (cpp_reader *);
 507 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
 508                                     const uchar *, size_t);
 509 extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *);
 510 extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *,
 511                                unsigned int);
 512 extern const uchar *_cpp_builtin_macro_text (cpp_reader *, cpp_hashnode *);
 513 int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *);
 514 /* In cpphash.c */
 515 extern void _cpp_init_hashtable (cpp_reader *, hash_table *);
 516 extern void _cpp_destroy_hashtable (cpp_reader *);
 517
 518 /* In cppfiles.c */
 519 typedef struct _cpp_file _cpp_file;
 520 extern _cpp_file *_cpp_find_file (cpp_reader *, const char *fname,
 521                                   cpp_dir *start_dir, bool fake);
 522 extern bool _cpp_find_failed (_cpp_file *);
 523 extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *);
 524 extern void _cpp_fake_include (cpp_reader *, const char *);
 525 extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool);
 526 extern bool _cpp_stack_include (cpp_reader *, const char *, int,
 527                                 enum include_type);
 528 extern int _cpp_compare_file_date (cpp_reader *, const char *, int);
 529 extern void _cpp_report_missing_guards (cpp_reader *);
 530 extern void _cpp_init_files (cpp_reader *);
 531 extern void _cpp_cleanup_files (cpp_reader *);
 532 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
 533 extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f);
 534 extern bool _cpp_read_file_entries (cpp_reader *, FILE *);
 535
 536 /* In cppexp.c */
 537 extern bool _cpp_parse_expr (cpp_reader *);
 538 extern struct op *_cpp_expand_op_stack (cpp_reader *);
 539
 540 /* In cpplex.c */
 541 extern void _cpp_process_line_notes (cpp_reader *, int);
 542 extern void _cpp_clean_line (cpp_reader *);
 543 extern bool _cpp_get_fresh_line (cpp_reader *);
 544 extern bool _cpp_skip_block_comment (cpp_reader *);
 545 extern cpp_token *_cpp_temp_token (cpp_reader *);
 546 extern const cpp_token *_cpp_lex_token (cpp_reader *);
 547 extern cpp_token *_cpp_lex_direct (cpp_reader *);
 548 extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *);
 549 extern void _cpp_init_tokenrun (tokenrun *, unsigned int);
 550
 551 /* In cppinit.c.  */
 552 extern void _cpp_maybe_push_include_file (cpp_reader *);
 553
 554 /* In cpplib.c */
 555 extern int _cpp_test_assertion (cpp_reader *, unsigned int *);
 556 extern int _cpp_handle_directive (cpp_reader *, int);
 557 extern void _cpp_define_builtin (cpp_reader *, const char *);
 558 extern char ** _cpp_save_pragma_names (cpp_reader *);
 559 extern void _cpp_restore_pragma_names (cpp_reader *, char **);
 560 extern void _cpp_do__Pragma (cpp_reader *);
 561 extern void _cpp_init_directives (cpp_reader *);
 562 extern void _cpp_init_internal_pragmas (cpp_reader *);
 563 extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *,
 564                                  unsigned int, unsigned int);
 565 extern void _cpp_pop_buffer (cpp_reader *);
 566
 567 /* In cpptrad.c.  */
 568 extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *);
 569 extern bool _cpp_read_logical_line_trad (cpp_reader *);
 570 extern void _cpp_overlay_buffer (cpp_reader *pfile, const uchar *, size_t);
 571 extern void _cpp_remove_overlay (cpp_reader *);
 572 extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *);
 573 extern bool _cpp_expansions_different_trad (const cpp_macro *,
 574                                             const cpp_macro *);
 575 extern uchar *_cpp_copy_replacement_text (const cpp_macro *, uchar *);
 576 extern size_t _cpp_replacement_text_len (const cpp_macro *);
 577
 578 /* In cppcharset.c.  */
 579 extern cppchar_t _cpp_valid_ucn (cpp_reader *, const uchar **,
 580                                  const uchar *, int);
 581 extern void _cpp_destroy_iconv (cpp_reader *);
 582 extern bool _cpp_interpret_string_notranslate (cpp_reader *,
 583                                                const cpp_string *,
 584                                                cpp_string *);
 585 extern uchar *_cpp_convert_input (cpp_reader *, const char *, uchar *,
 586                                   size_t, size_t, off_t *);
 587 extern const char *_cpp_default_encoding (void);
 588
 589 /* Utility routines and macros.  */
 590 #define DSC(str) (const uchar *)str, sizeof str - 1
 591 #define xnew(T)         (T *) xmalloc (sizeof(T))
 592 #define xcnew(T)        (T *) xcalloc (1, sizeof(T))
 593 #define xnewvec(T, N)   (T *) xmalloc (sizeof(T) * (N))
 594 #define xcnewvec(T, N)  (T *) xcalloc (N, sizeof(T))
 595 #define xobnew(O, T)    (T *) obstack_alloc (O, sizeof(T))
 596
 597 /* These are inline functions instead of macros so we can get type
 598    checking.  */
 599 static inline int ustrcmp (const uchar *, const uchar *);
 600 static inline int ustrncmp (const uchar *, const uchar *, size_t);
 601 static inline size_t ustrlen (const uchar *);
 602 static inline uchar *uxstrdup (const uchar *);
 603 static inline uchar *ustrchr (const uchar *, int);
 604 static inline int ufputs (const uchar *, FILE *);
 605
 606 static inline int
 607 ustrcmp (const uchar *s1, const uchar *s2)
 608 {
 609   return strcmp ((const char *)s1, (const char *)s2);
 610 }
 611
 612 static inline int
 613 ustrncmp (const uchar *s1, const uchar *s2, size_t n)
 614 {
 615   return strncmp ((const char *)s1, (const char *)s2, n);
 616 }
 617
 618 static inline size_t
 619 ustrlen (const uchar *s1)
 620 {
 621   return strlen ((const char *)s1);
 622 }
 623
 624 static inline uchar *
 625 uxstrdup (const uchar *s1)
 626 {
 627   return (uchar *) xstrdup ((const char *)s1);
 628 }
 629
 630 static inline uchar *
 631 ustrchr (const uchar *s1, int c)
 632 {
 633   return (uchar *) strchr ((const char *)s1, c);
 634 }
 635
 636 static inline int
 637 ufputs (const uchar *s, FILE *f)
 638 {
 639   return fputs ((const char *)s, f);
 640 }
 641
 642 #endif /* ! GCC_CPPHASH_H */