1/* Part of CPP library. 2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 3 Free Software Foundation, Inc. 4 5This program is free software; you can redistribute it and/or modify it 6under the terms of the GNU General Public License as published by the 7Free Software Foundation; either version 2, or (at your option) any 8later version. 9 10This program is distributed in the hope that it will be useful, 11but WITHOUT ANY WARRANTY; without even the implied warranty of 12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13GNU General Public License for more details. 14 15You should have received a copy of the GNU General Public License 16along with this program; if not, write to the Free Software 17Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 18 19/* This header defines all the internal data structures and functions 20 that need to be visible across files. It should not be used outside 21 cpplib. */ 22 23#ifndef LIBCPP_INTERNAL_H 24#define LIBCPP_INTERNAL_H 25 26#include "symtab.h" 27#include "cpp-id-data.h" 28 29#ifndef HAVE_ICONV_H 30#undef HAVE_ICONV 31#endif 32 33#if HAVE_ICONV 34#include <iconv.h> 35#else 36#define HAVE_ICONV 0 37typedef int iconv_t; /* dummy */ 38#endif 39 40struct directive; /* Deliberately incomplete. */ 41struct pending_option; 42struct op; 43struct _cpp_strbuf; 44 45typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t, 46 struct _cpp_strbuf *); 47struct cset_converter 48{ 49 convert_f func; 50 iconv_t cd; 51}; 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#define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \ 68 const struct line_maps *line_table = PFILE->line_table; \ 69 const struct line_map *map = &line_table->maps[line_table->used-1]; \ 70 unsigned int line = SOURCE_LINE (map, line_table->highest_line); \ 71 linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \ 72 } while (0) 73 74/* Maximum nesting of cpp_buffers. We use a static limit, partly for 75 efficiency, and partly to limit runaway recursion. */ 76#define CPP_STACK_MAX 200 77 78/* Host alignment handling. */ 79struct dummy 80{ 81 char c; 82 union 83 { 84 double d; 85 int *p; 86 } u; 87}; 88 89#define DEFAULT_ALIGNMENT offsetof (struct dummy, u) 90#define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1)) 91#define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT) 92 93#define _cpp_mark_macro_used(NODE) do { \ 94 if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN)) \ 95 (NODE)->value.macro->used = 1; } while (0) 96 97/* A generic memory buffer, and operations on it. */ 98typedef struct _cpp_buff _cpp_buff; 99struct _cpp_buff 100{ 101 struct _cpp_buff *next; 102 unsigned char *base, *cur, *limit; 103}; 104 105extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t); 106extern void _cpp_release_buff (cpp_reader *, _cpp_buff *); 107extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t); 108extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t); 109extern void _cpp_free_buff (_cpp_buff *); 110extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t); 111extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t); 112 113#define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur) 114#define BUFF_FRONT(BUFF) ((BUFF)->cur) 115#define BUFF_LIMIT(BUFF) ((BUFF)->limit) 116 117/* #include types. */ 118enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE}; 119 120union utoken 121{ 122 const cpp_token *token; 123 const cpp_token **ptoken; 124}; 125 126/* A "run" of tokens; part of a chain of runs. */ 127typedef struct tokenrun tokenrun; 128struct tokenrun 129{ 130 tokenrun *next, *prev; 131 cpp_token *base, *limit; 132}; 133 134/* Accessor macros for struct cpp_context. */ 135#define FIRST(c) ((c)->u.iso.first) 136#define LAST(c) ((c)->u.iso.last) 137#define CUR(c) ((c)->u.trad.cur) 138#define RLIMIT(c) ((c)->u.trad.rlimit) 139 140typedef struct cpp_context cpp_context; 141struct cpp_context 142{ 143 /* Doubly-linked list. */ 144 cpp_context *next, *prev; 145 146 union 147 { 148 /* For ISO macro expansion. Contexts other than the base context 149 are contiguous tokens. e.g. macro expansions, expanded 150 argument tokens. */ 151 struct 152 { 153 union utoken first; 154 union utoken last; 155 } iso; 156 157 /* For traditional macro expansion. */ 158 struct 159 { 160 const unsigned char *cur; 161 const unsigned char *rlimit; 162 } trad; 163 } u; 164 165 /* If non-NULL, a buffer used for storage related to this context. 166 When the context is popped, the buffer is released. */ 167 _cpp_buff *buff; 168 169 /* For a macro context, the macro node, otherwise NULL. */ 170 cpp_hashnode *macro; 171 172 /* True if utoken element is token, else ptoken. */ 173 bool direct_p; 174}; 175 176struct lexer_state 177{ 178 /* Nonzero if first token on line is CPP_HASH. */ 179 unsigned char in_directive; 180 181 /* Nonzero if in a directive that will handle padding tokens itself. 182 #include needs this to avoid problems with computed include and 183 spacing between tokens. */ 184 unsigned char directive_wants_padding; 185 186 /* True if we are skipping a failed conditional group. */ 187 unsigned char skipping; 188 189 /* Nonzero if in a directive that takes angle-bracketed headers. */ 190 unsigned char angled_headers; 191 192 /* Nonzero if in a #if or #elif directive. */ 193 unsigned char in_expression; 194 195 /* Nonzero to save comments. Turned off if discard_comments, and in 196 all directives apart from #define. */ 197 unsigned char save_comments; 198 199 /* Nonzero if lexing __VA_ARGS__ is valid. */ 200 unsigned char va_args_ok; 201 202 /* Nonzero if lexing poisoned identifiers is valid. */ 203 unsigned char poisoned_ok; 204 205 /* Nonzero to prevent macro expansion. */ 206 unsigned char prevent_expansion; 207 208 /* Nonzero when parsing arguments to a function-like macro. */ 209 unsigned char parsing_args; 210 211 /* Nonzero if prevent_expansion is true only because output is 212 being discarded. */ 213 unsigned char discarding_output; 214 215 /* Nonzero to skip evaluating part of an expression. */ 216 unsigned int skip_eval; 217 218 /* Nonzero when handling a deferred pragma. */ 219 unsigned char in_deferred_pragma; 220 221 /* Nonzero if the deferred pragma being handled allows macro expansion. */ 222 unsigned char pragma_allow_expansion; 223 224 /* APPLE LOCAL begin #error with unmatched quotes 5607574 */ 225 /* Nonzero when handling #error and #warning to allow unmatched quotes. */ 226 unsigned char in_diagnostic; 227 /* APPLE LOCAL end #error with unmatched quotes 5607574 */ 228}; 229 230/* Special nodes - identifiers with predefined significance. */ 231struct spec_nodes 232{ 233 cpp_hashnode *n_defined; /* defined operator */ 234 cpp_hashnode *n_true; /* C++ keyword true */ 235 cpp_hashnode *n_false; /* C++ keyword false */ 236 cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */ 237}; 238 239typedef struct _cpp_line_note _cpp_line_note; 240struct _cpp_line_note 241{ 242 /* Location in the clean line the note refers to. */ 243 const unsigned char *pos; 244 245 /* Type of note. The 9 'from' trigraph characters represent those 246 trigraphs, '\\' an escaped newline, ' ' an escaped newline with 247 intervening space, and anything else is invalid. */ 248 unsigned int type; 249}; 250 251/* Represents the contents of a file cpplib has read in. */ 252struct cpp_buffer 253{ 254 const unsigned char *cur; /* Current location. */ 255 const unsigned char *line_base; /* Start of current physical line. */ 256 const unsigned char *next_line; /* Start of to-be-cleaned logical line. */ 257 258 const unsigned char *buf; /* Entire character buffer. */ 259 const unsigned char *rlimit; /* Writable byte at end of file. */ 260 261 _cpp_line_note *notes; /* Array of notes. */ 262 unsigned int cur_note; /* Next note to process. */ 263 unsigned int notes_used; /* Number of notes. */ 264 unsigned int notes_cap; /* Size of allocated array. */ 265 266 struct cpp_buffer *prev; 267 268 /* Pointer into the file table; non-NULL if this is a file buffer. 269 Used for include_next and to record control macros. */ 270 struct _cpp_file *file; 271 272 /* Saved value of __TIMESTAMP__ macro - date and time of last modification 273 of the assotiated file. */ 274 const unsigned char *timestamp; 275 276 /* Value of if_stack at start of this file. 277 Used to prohibit unmatched #endif (etc) in an include file. */ 278 struct if_stack *if_stack; 279 280 /* True if we need to get the next clean line. */ 281 bool need_line; 282 283 /* True if we have already warned about C++ comments in this file. 284 The warning happens only for C89 extended mode with -pedantic on, 285 or for -Wtraditional, and only once per file (otherwise it would 286 be far too noisy). */ 287 unsigned int warned_cplusplus_comments : 1; 288 289 /* True if we don't process trigraphs and escaped newlines. True 290 for preprocessed input, command line directives, and _Pragma 291 buffers. */ 292 unsigned int from_stage3 : 1; 293 294 /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is 295 true, a CPP_EOF token is then returned. Otherwise, the next 296 token from the enclosing buffer is returned. */ 297 unsigned int return_at_eof : 1; 298 299 /* One for a system header, two for a C system header file that therefore 300 needs to be extern "C" protected in C++, and zero otherwise. */ 301 unsigned char sysp; 302 303 /* The directory of the this buffer's file. Its NAME member is not 304 allocated, so we don't need to worry about freeing it. */ 305 struct cpp_dir dir; 306 307 /* Descriptor for converting from the input character set to the 308 source character set. */ 309 struct cset_converter input_cset_desc; 310}; 311 312/* A cpp_reader encapsulates the "state" of a pre-processor run. 313 Applying cpp_get_token repeatedly yields a stream of pre-processor 314 tokens. Usually, there is only one cpp_reader object active. */ 315struct cpp_reader 316{ 317 /* Top of buffer stack. */ 318 cpp_buffer *buffer; 319 320 /* Overlaid buffer (can be different after processing #include). */ 321 cpp_buffer *overlaid_buffer; 322 323 /* Lexer state. */ 324 struct lexer_state state; 325 326 /* Source line tracking. */ 327 struct line_maps *line_table; 328 329 /* The line of the '#' of the current directive. */ 330 source_location directive_line; 331 332 /* Memory buffers. */ 333 _cpp_buff *a_buff; /* Aligned permanent storage. */ 334 _cpp_buff *u_buff; /* Unaligned permanent storage. */ 335 _cpp_buff *free_buffs; /* Free buffer chain. */ 336 337 /* Context stack. */ 338 struct cpp_context base_context; 339 struct cpp_context *context; 340 341 /* If in_directive, the directive if known. */ 342 const struct directive *directive; 343 344 /* Token generated while handling a directive, if any. */ 345 cpp_token directive_result; 346 347 /* Search paths for include files. */ 348 struct cpp_dir *quote_include; /* "" */ 349 struct cpp_dir *bracket_include; /* <> */ 350 struct cpp_dir no_search_path; /* No path. */ 351 352 /* Chain of all hashed _cpp_file instances. */ 353 struct _cpp_file *all_files; 354 355 struct _cpp_file *main_file; 356 357 /* File and directory hash table. */ 358 struct htab *file_hash; 359 struct htab *dir_hash; 360 struct file_hash_entry *file_hash_entries; 361 unsigned int file_hash_entries_allocated, file_hash_entries_used; 362 363 /* Negative path lookup hash table. */ 364 struct htab *nonexistent_file_hash; 365 struct obstack nonexistent_file_ob; 366 367 /* Nonzero means don't look for #include "foo" the source-file 368 directory. */ 369 bool quote_ignores_source_dir; 370 371 /* Nonzero if any file has contained #pragma once or #import has 372 been used. */ 373 bool seen_once_only; 374 375 /* Multiple include optimization. */ 376 const cpp_hashnode *mi_cmacro; 377 const cpp_hashnode *mi_ind_cmacro; 378 bool mi_valid; 379 380 /* Lexing. */ 381 cpp_token *cur_token; 382 tokenrun base_run, *cur_run; 383 unsigned int lookaheads; 384 385 /* Nonzero prevents the lexer from re-using the token runs. */ 386 unsigned int keep_tokens; 387 388 /* Error counter for exit code. */ 389 unsigned int errors; 390 391 /* Buffer to hold macro definition string. */ 392 unsigned char *macro_buffer; 393 unsigned int macro_buffer_len; 394 395 /* Descriptor for converting from the source character set to the 396 execution character set. */ 397 struct cset_converter narrow_cset_desc; 398 399 /* Descriptor for converting from the source character set to the 400 wide execution character set. */ 401 struct cset_converter wide_cset_desc; 402 403 /* Date and time text. Calculated together if either is requested. */ 404 const unsigned char *date; 405 const unsigned char *time; 406 407 /* EOF token, and a token forcing paste avoidance. */ 408 cpp_token avoid_paste; 409 cpp_token eof; 410 411 /* Opaque handle to the dependencies of mkdeps.c. */ 412 struct deps *deps; 413 414 /* Obstack holding all macro hash nodes. This never shrinks. 415 See identifiers.c */ 416 struct obstack hash_ob; 417 418 /* Obstack holding buffer and conditional structures. This is a 419 real stack. See directives.c. */ 420 struct obstack buffer_ob; 421 422 /* Pragma table - dynamic, because a library user can add to the 423 list of recognized pragmas. */ 424 struct pragma_entry *pragmas; 425 426 /* Call backs to cpplib client. */ 427 struct cpp_callbacks cb; 428 429 /* Identifier hash table. */ 430 struct ht *hash_table; 431 432 /* Expression parser stack. */ 433 struct op *op_stack, *op_limit; 434 435 /* User visible options. */ 436 struct cpp_options opts; 437 438 /* Special nodes - identifiers with predefined significance to the 439 preprocessor. */ 440 struct spec_nodes spec_nodes; 441 442 /* Whether cpplib owns the hashtable. */ 443 bool our_hashtable; 444 445 /* Traditional preprocessing output buffer (a logical line). */ 446 struct 447 { 448 unsigned char *base; 449 unsigned char *limit; 450 unsigned char *cur; 451 source_location first_line; 452 } out; 453 454 /* Used for buffer overlays by traditional.c. */ 455 const unsigned char *saved_cur, *saved_rlimit, *saved_line_base; 456 457 /* A saved list of the defined macros, for dependency checking 458 of precompiled headers. */ 459 struct cpp_savedstate *savedstate; 460 461 unsigned int nextcounter; 462}; 463 464/* Character classes. Based on the more primitive macros in safe-ctype.h. 465 If the definition of `numchar' looks odd to you, please look up the 466 definition of a pp-number in the C standard [section 6.4.8 of C99]. 467 468 In the unlikely event that characters other than \r and \n enter 469 the set is_vspace, the macro handle_newline() in lex.c must be 470 updated. */ 471#define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident)) 472 473#define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x)) 474#define is_numchar(x) ISIDNUM(x) 475#define is_idstart(x) (ISIDST(x) || _dollar_ok(x)) 476#define is_numstart(x) ISDIGIT(x) 477#define is_hspace(x) ISBLANK(x) 478#define is_vspace(x) IS_VSPACE(x) 479#define is_nvspace(x) IS_NVSPACE(x) 480#define is_space(x) IS_SPACE_OR_NUL(x) 481 482/* This table is constant if it can be initialized at compile time, 483 which is the case if cpp was compiled with GCC >=2.7, or another 484 compiler that supports C99. */ 485#if HAVE_DESIGNATED_INITIALIZERS 486extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; 487#else 488extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1]; 489#endif 490 491/* Macros. */ 492 493static inline int cpp_in_system_header (cpp_reader *); 494static inline int 495cpp_in_system_header (cpp_reader *pfile) 496{ 497 return pfile->buffer ? pfile->buffer->sysp : 0; 498} 499#define CPP_PEDANTIC(PF) CPP_OPTION (PF, pedantic) 500#define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, warn_traditional) 501 502/* In errors.c */ 503extern int _cpp_begin_message (cpp_reader *, int, 504 source_location, unsigned int); 505 506/* In macro.c */ 507extern void _cpp_free_definition (cpp_hashnode *); 508extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *); 509extern void _cpp_pop_context (cpp_reader *); 510extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *, 511 const unsigned char *, size_t); 512extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *); 513extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *, 514 unsigned int); 515extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *, 516 cpp_hashnode *); 517extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *); 518extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *, 519 const cpp_token *, unsigned int); 520 521/* In identifiers.c */ 522extern void _cpp_init_hashtable (cpp_reader *, hash_table *); 523extern void _cpp_destroy_hashtable (cpp_reader *); 524 525/* In files.c */ 526typedef struct _cpp_file _cpp_file; 527extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *, 528 bool, int); 529extern bool _cpp_find_failed (_cpp_file *); 530extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *); 531extern void _cpp_fake_include (cpp_reader *, const char *); 532extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool); 533extern bool _cpp_stack_include (cpp_reader *, const char *, int, 534 enum include_type); 535extern int _cpp_compare_file_date (cpp_reader *, const char *, int); 536extern void _cpp_report_missing_guards (cpp_reader *); 537extern void _cpp_init_files (cpp_reader *); 538extern void _cpp_cleanup_files (cpp_reader *); 539extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *); 540extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f); 541extern bool _cpp_read_file_entries (cpp_reader *, FILE *); 542extern struct stat *_cpp_get_file_stat (_cpp_file *); 543 544/* In expr.c */ 545extern bool _cpp_parse_expr (cpp_reader *); 546extern struct op *_cpp_expand_op_stack (cpp_reader *); 547 548/* In lex.c */ 549extern void _cpp_process_line_notes (cpp_reader *, int); 550extern void _cpp_clean_line (cpp_reader *); 551extern bool _cpp_get_fresh_line (cpp_reader *); 552extern bool _cpp_skip_block_comment (cpp_reader *); 553extern cpp_token *_cpp_temp_token (cpp_reader *); 554extern const cpp_token *_cpp_lex_token (cpp_reader *); 555extern cpp_token *_cpp_lex_direct (cpp_reader *); 556extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *); 557extern void _cpp_init_tokenrun (tokenrun *, unsigned int); 558 559/* In init.c. */ 560extern void _cpp_maybe_push_include_file (cpp_reader *); 561 562/* In directives.c */ 563extern int _cpp_test_assertion (cpp_reader *, unsigned int *); 564extern int _cpp_handle_directive (cpp_reader *, int); 565extern void _cpp_define_builtin (cpp_reader *, const char *); 566extern char ** _cpp_save_pragma_names (cpp_reader *); 567extern void _cpp_restore_pragma_names (cpp_reader *, char **); 568extern void _cpp_do__Pragma (cpp_reader *); 569extern void _cpp_init_directives (cpp_reader *); 570extern void _cpp_init_internal_pragmas (cpp_reader *); 571extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *, 572 unsigned int, unsigned int); 573extern void _cpp_pop_buffer (cpp_reader *); 574 575/* In directives.c */ 576struct _cpp_dir_only_callbacks 577{ 578 /* Called to print a block of lines. */ 579 void (*print_lines) (int, const void *, size_t); 580 void (*maybe_print_line) (source_location); 581}; 582 583extern void _cpp_preprocess_dir_only (cpp_reader *, 584 const struct _cpp_dir_only_callbacks *); 585 586/* In traditional.c. */ 587extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *); 588extern bool _cpp_read_logical_line_trad (cpp_reader *); 589extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *, 590 size_t); 591extern void _cpp_remove_overlay (cpp_reader *); 592extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *); 593extern bool _cpp_expansions_different_trad (const cpp_macro *, 594 const cpp_macro *); 595extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *, 596 unsigned char *); 597extern size_t _cpp_replacement_text_len (const cpp_macro *); 598 599/* In charset.c. */ 600 601/* The normalization state at this point in the sequence. 602 It starts initialized to all zeros, and at the end 603 'level' is the normalization level of the sequence. */ 604 605struct normalize_state 606{ 607 /* The previous character. */ 608 cppchar_t previous; 609 /* The combining class of the previous character. */ 610 unsigned char prev_class; 611 /* The lowest normalization level so far. */ 612 enum cpp_normalize_level level; 613}; 614#define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC } 615#define NORMALIZE_STATE_RESULT(st) ((st)->level) 616 617/* We saw a character that matches ISIDNUM(), update a 618 normalize_state appropriately. */ 619#define NORMALIZE_STATE_UPDATE_IDNUM(st) \ 620 ((st)->previous = 0, (st)->prev_class = 0) 621 622extern cppchar_t _cpp_valid_ucn (cpp_reader *, const unsigned char **, 623 const unsigned char *, int, 624 struct normalize_state *state); 625extern void _cpp_destroy_iconv (cpp_reader *); 626extern unsigned char *_cpp_convert_input (cpp_reader *, const char *, 627 unsigned char *, size_t, size_t, 628 off_t *); 629extern const char *_cpp_default_encoding (void); 630extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile, 631 const unsigned char *id, 632 size_t len); 633 634/* Utility routines and macros. */ 635#define DSC(str) (const unsigned char *)str, sizeof str - 1 636 637/* These are inline functions instead of macros so we can get type 638 checking. */ 639static inline int ustrcmp (const unsigned char *, const unsigned char *); 640static inline int ustrncmp (const unsigned char *, const unsigned char *, 641 size_t); 642static inline size_t ustrlen (const unsigned char *); 643static inline unsigned char *uxstrdup (const unsigned char *); 644static inline unsigned char *ustrchr (const unsigned char *, int); 645static inline int ufputs (const unsigned char *, FILE *); 646 647/* Use a const char for the second parameter since it is usually a literal. */ 648static inline int ustrcspn (const unsigned char *, const char *); 649 650static inline int 651ustrcmp (const unsigned char *s1, const unsigned char *s2) 652{ 653 return strcmp ((const char *)s1, (const char *)s2); 654} 655 656static inline int 657ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n) 658{ 659 return strncmp ((const char *)s1, (const char *)s2, n); 660} 661 662static inline int 663ustrcspn (const unsigned char *s1, const char *s2) 664{ 665 return strcspn ((const char *)s1, s2); 666} 667 668static inline size_t 669ustrlen (const unsigned char *s1) 670{ 671 return strlen ((const char *)s1); 672} 673 674static inline unsigned char * 675uxstrdup (const unsigned char *s1) 676{ 677 return (unsigned char *) xstrdup ((const char *)s1); 678} 679 680static inline unsigned char * 681ustrchr (const unsigned char *s1, int c) 682{ 683 return (unsigned char *) strchr ((const char *)s1, c); 684} 685 686static inline int 687ufputs (const unsigned char *s, FILE *f) 688{ 689 return fputs ((const char *)s, f); 690} 691 692#endif /* ! LIBCPP_INTERNAL_H */ 693