1 /* Part of CPP library.
2 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007,
3 2008, 2009, 2010 Free Software Foundation, Inc.
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 3, or (at your option) any
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.
15 You should have received a copy of the GNU General Public License
16 along with this program; see the file COPYING3. If not see
17 <http://www.gnu.org/licenses/>. */
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
23 #ifndef LIBCPP_INTERNAL_H
24 #define LIBCPP_INTERNAL_H
27 #include "cpp-id-data.h"
33 typedef int iconv_t; /* dummy */
40 struct directive; /* Deliberately incomplete. */
41 struct pending_option;
45 typedef bool (*convert_f) (iconv_t, const unsigned char *, size_t,
46 struct _cpp_strbuf *);
54 #define BITS_PER_CPPCHAR_T (CHAR_BIT * sizeof (cppchar_t))
56 /* Test if a sign is valid within a preprocessing number. */
57 #define VALID_SIGN(c, prevc) \
58 (((c) == '+' || (c) == '-') && \
59 ((prevc) == 'e' || (prevc) == 'E' \
60 || (((prevc) == 'p' || (prevc) == 'P') \
61 && CPP_OPTION (pfile, extended_numbers))))
63 #define CPP_OPTION(PFILE, OPTION) ((PFILE)->opts.OPTION)
64 #define CPP_BUFFER(PFILE) ((PFILE)->buffer)
65 #define CPP_BUF_COLUMN(BUF, CUR) ((CUR) - (BUF)->line_base)
66 #define CPP_BUF_COL(BUF) CPP_BUF_COLUMN(BUF, (BUF)->cur)
68 #define CPP_INCREMENT_LINE(PFILE, COLS_HINT) do { \
69 const struct line_maps *line_table = PFILE->line_table; \
70 const struct line_map *map = \
71 LINEMAPS_LAST_ORDINARY_MAP (line_table); \
72 linenum_type line = SOURCE_LINE (map, line_table->highest_line); \
73 linemap_line_start (PFILE->line_table, line + 1, COLS_HINT); \
76 /* Maximum nesting of cpp_buffers. We use a static limit, partly for
77 efficiency, and partly to limit runaway recursion. */
78 #define CPP_STACK_MAX 200
80 /* Host alignment handling. */
91 #define DEFAULT_ALIGNMENT offsetof (struct dummy, u)
92 #define CPP_ALIGN2(size, align) (((size) + ((align) - 1)) & ~((align) - 1))
93 #define CPP_ALIGN(size) CPP_ALIGN2 (size, DEFAULT_ALIGNMENT)
95 #define _cpp_mark_macro_used(NODE) do { \
96 if ((NODE)->type == NT_MACRO && !((NODE)->flags & NODE_BUILTIN)) \
97 (NODE)->value.macro->used = 1; } while (0)
99 /* A generic memory buffer, and operations on it. */
100 typedef struct _cpp_buff _cpp_buff;
103 struct _cpp_buff *next;
104 unsigned char *base, *cur, *limit;
107 extern _cpp_buff *_cpp_get_buff (cpp_reader *, size_t);
108 extern void _cpp_release_buff (cpp_reader *, _cpp_buff *);
109 extern void _cpp_extend_buff (cpp_reader *, _cpp_buff **, size_t);
110 extern _cpp_buff *_cpp_append_extend_buff (cpp_reader *, _cpp_buff *, size_t);
111 extern void _cpp_free_buff (_cpp_buff *);
112 extern unsigned char *_cpp_aligned_alloc (cpp_reader *, size_t);
113 extern unsigned char *_cpp_unaligned_alloc (cpp_reader *, size_t);
115 #define BUFF_ROOM(BUFF) (size_t) ((BUFF)->limit - (BUFF)->cur)
116 #define BUFF_FRONT(BUFF) ((BUFF)->cur)
117 #define BUFF_LIMIT(BUFF) ((BUFF)->limit)
119 /* #include types. */
120 enum include_type {IT_INCLUDE, IT_INCLUDE_NEXT, IT_IMPORT, IT_CMDLINE};
124 const cpp_token *token;
125 const cpp_token **ptoken;
128 /* A "run" of tokens; part of a chain of runs. */
129 typedef struct tokenrun tokenrun;
132 tokenrun *next, *prev;
133 cpp_token *base, *limit;
136 /* Accessor macros for struct cpp_context. */
137 #define FIRST(c) ((c)->u.iso.first)
138 #define LAST(c) ((c)->u.iso.last)
139 #define CUR(c) ((c)->u.trad.cur)
140 #define RLIMIT(c) ((c)->u.trad.rlimit)
142 typedef struct cpp_context cpp_context;
145 /* Doubly-linked list. */
146 cpp_context *next, *prev;
150 /* For ISO macro expansion. Contexts other than the base context
151 are contiguous tokens. e.g. macro expansions, expanded
159 /* For traditional macro expansion. */
162 const unsigned char *cur;
163 const unsigned char *rlimit;
167 /* If non-NULL, a buffer used for storage related to this context.
168 When the context is popped, the buffer is released. */
171 /* For a macro context, the macro node, otherwise NULL. */
174 /* True if utoken element is token, else ptoken. */
180 /* Nonzero if first token on line is CPP_HASH. */
181 unsigned char in_directive;
183 /* Nonzero if in a directive that will handle padding tokens itself.
184 #include needs this to avoid problems with computed include and
185 spacing between tokens. */
186 unsigned char directive_wants_padding;
188 /* True if we are skipping a failed conditional group. */
189 unsigned char skipping;
191 /* Nonzero if in a directive that takes angle-bracketed headers. */
192 unsigned char angled_headers;
194 /* Nonzero if in a #if or #elif directive. */
195 unsigned char in_expression;
197 /* Nonzero to save comments. Turned off if discard_comments, and in
198 all directives apart from #define. */
199 unsigned char save_comments;
201 /* Nonzero if lexing __VA_ARGS__ is valid. */
202 unsigned char va_args_ok;
204 /* Nonzero if lexing poisoned identifiers is valid. */
205 unsigned char poisoned_ok;
207 /* Nonzero to prevent macro expansion. */
208 unsigned char prevent_expansion;
210 /* Nonzero when parsing arguments to a function-like macro. */
211 unsigned char parsing_args;
213 /* Nonzero if prevent_expansion is true only because output is
215 unsigned char discarding_output;
217 /* Nonzero to skip evaluating part of an expression. */
218 unsigned int skip_eval;
220 /* Nonzero when handling a deferred pragma. */
221 unsigned char in_deferred_pragma;
223 /* Nonzero if the deferred pragma being handled allows macro expansion. */
224 unsigned char pragma_allow_expansion;
227 /* Special nodes - identifiers with predefined significance. */
230 cpp_hashnode *n_defined; /* defined operator */
231 cpp_hashnode *n_true; /* C++ keyword true */
232 cpp_hashnode *n_false; /* C++ keyword false */
233 cpp_hashnode *n__VA_ARGS__; /* C99 vararg macros */
236 typedef struct _cpp_line_note _cpp_line_note;
237 struct _cpp_line_note
239 /* Location in the clean line the note refers to. */
240 const unsigned char *pos;
242 /* Type of note. The 9 'from' trigraph characters represent those
243 trigraphs, '\\' an escaped newline, ' ' an escaped newline with
244 intervening space, 0 represents a note that has already been handled,
245 and anything else is invalid. */
249 /* Represents the contents of a file cpplib has read in. */
252 const unsigned char *cur; /* Current location. */
253 const unsigned char *line_base; /* Start of current physical line. */
254 const unsigned char *next_line; /* Start of to-be-cleaned logical line. */
256 const unsigned char *buf; /* Entire character buffer. */
257 const unsigned char *rlimit; /* Writable byte at end of file. */
259 _cpp_line_note *notes; /* Array of notes. */
260 unsigned int cur_note; /* Next note to process. */
261 unsigned int notes_used; /* Number of notes. */
262 unsigned int notes_cap; /* Size of allocated array. */
264 struct cpp_buffer *prev;
266 /* Pointer into the file table; non-NULL if this is a file buffer.
267 Used for include_next and to record control macros. */
268 struct _cpp_file *file;
270 /* Saved value of __TIMESTAMP__ macro - date and time of last modification
271 of the assotiated file. */
272 const unsigned char *timestamp;
274 /* Value of if_stack at start of this file.
275 Used to prohibit unmatched #endif (etc) in an include file. */
276 struct if_stack *if_stack;
278 /* True if we need to get the next clean line. */
281 /* True if we have already warned about C++ comments in this file.
282 The warning happens only for C89 extended mode with -pedantic on,
283 or for -Wtraditional, and only once per file (otherwise it would
284 be far too noisy). */
285 unsigned int warned_cplusplus_comments : 1;
287 /* True if we don't process trigraphs and escaped newlines. True
288 for preprocessed input, command line directives, and _Pragma
290 unsigned int from_stage3 : 1;
292 /* At EOF, a buffer is automatically popped. If RETURN_AT_EOF is
293 true, a CPP_EOF token is then returned. Otherwise, the next
294 token from the enclosing buffer is returned. */
295 unsigned int return_at_eof : 1;
297 /* One for a system header, two for a C system header file that therefore
298 needs to be extern "C" protected in C++, and zero otherwise. */
301 /* The directory of the this buffer's file. Its NAME member is not
302 allocated, so we don't need to worry about freeing it. */
305 /* Descriptor for converting from the input character set to the
306 source character set. */
307 struct cset_converter input_cset_desc;
310 /* The list of saved macros by push_macro pragma. */
311 struct def_pragma_macro {
312 /* Chain element to previous saved macro. */
313 struct def_pragma_macro *next;
314 /* Name of the macro. */
316 /* The stored macro content. */
317 unsigned char *definition;
319 /* Definition line number. */
320 source_location line;
321 /* If macro defined in system header. */
322 unsigned int syshdr : 1;
323 /* Nonzero if it has been expanded or had its existence tested. */
324 unsigned int used : 1;
326 /* Mark if we save an undefined macro. */
327 unsigned int is_undef : 1;
330 /* A cpp_reader encapsulates the "state" of a pre-processor run.
331 Applying cpp_get_token repeatedly yields a stream of pre-processor
332 tokens. Usually, there is only one cpp_reader object active. */
335 /* Top of buffer stack. */
338 /* Overlaid buffer (can be different after processing #include). */
339 cpp_buffer *overlaid_buffer;
342 struct lexer_state state;
344 /* Source line tracking. */
345 struct line_maps *line_table;
347 /* The line of the '#' of the current directive. */
348 source_location directive_line;
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. */
356 struct cpp_context base_context;
357 struct cpp_context *context;
359 /* If in_directive, the directive if known. */
360 const struct directive *directive;
362 /* Token generated while handling a directive, if any. */
363 cpp_token directive_result;
365 /* When expanding a macro at top-level, this is the location of the
367 source_location invocation_location;
369 /* True if this call to cpp_get_token should consider setting
370 invocation_location. */
371 bool set_invocation_location;
373 /* Search paths for include files. */
374 struct cpp_dir *quote_include; /* "" */
375 struct cpp_dir *bracket_include; /* <> */
376 struct cpp_dir no_search_path; /* No path. */
378 /* Chain of all hashed _cpp_file instances. */
379 struct _cpp_file *all_files;
381 struct _cpp_file *main_file;
383 /* File and directory hash table. */
384 struct htab *file_hash;
385 struct htab *dir_hash;
386 struct file_hash_entry_pool *file_hash_entries;
388 /* Negative path lookup hash table. */
389 struct htab *nonexistent_file_hash;
390 struct obstack nonexistent_file_ob;
392 /* Nonzero means don't look for #include "foo" the source-file
394 bool quote_ignores_source_dir;
396 /* Nonzero if any file has contained #pragma once or #import has
400 /* Multiple include optimization. */
401 const cpp_hashnode *mi_cmacro;
402 const cpp_hashnode *mi_ind_cmacro;
406 cpp_token *cur_token;
407 tokenrun base_run, *cur_run;
408 unsigned int lookaheads;
410 /* Nonzero prevents the lexer from re-using the token runs. */
411 unsigned int keep_tokens;
413 /* Buffer to hold macro definition string. */
414 unsigned char *macro_buffer;
415 unsigned int macro_buffer_len;
417 /* Descriptor for converting from the source character set to the
418 execution character set. */
419 struct cset_converter narrow_cset_desc;
421 /* Descriptor for converting from the source character set to the
422 UTF-8 execution character set. */
423 struct cset_converter utf8_cset_desc;
425 /* Descriptor for converting from the source character set to the
426 UTF-16 execution character set. */
427 struct cset_converter char16_cset_desc;
429 /* Descriptor for converting from the source character set to the
430 UTF-32 execution character set. */
431 struct cset_converter char32_cset_desc;
433 /* Descriptor for converting from the source character set to the
434 wide execution character set. */
435 struct cset_converter wide_cset_desc;
437 /* Date and time text. Calculated together if either is requested. */
438 const unsigned char *date;
439 const unsigned char *time;
441 /* EOF token, and a token forcing paste avoidance. */
442 cpp_token avoid_paste;
445 /* Opaque handle to the dependencies of mkdeps.c. */
448 /* Obstack holding all macro hash nodes. This never shrinks.
450 struct obstack hash_ob;
452 /* Obstack holding buffer and conditional structures. This is a
453 real stack. See directives.c. */
454 struct obstack buffer_ob;
456 /* Pragma table - dynamic, because a library user can add to the
457 list of recognized pragmas. */
458 struct pragma_entry *pragmas;
460 /* Call backs to cpplib client. */
461 struct cpp_callbacks cb;
463 /* Identifier hash table. */
464 struct ht *hash_table;
466 /* Expression parser stack. */
467 struct op *op_stack, *op_limit;
469 /* User visible options. */
470 struct cpp_options opts;
472 /* Special nodes - identifiers with predefined significance to the
474 struct spec_nodes spec_nodes;
476 /* Whether cpplib owns the hashtable. */
479 /* Traditional preprocessing output buffer (a logical line). */
483 unsigned char *limit;
485 source_location first_line;
488 /* Used for buffer overlays by traditional.c. */
489 const unsigned char *saved_cur, *saved_rlimit, *saved_line_base;
491 /* A saved list of the defined macros, for dependency checking
492 of precompiled headers. */
493 struct cpp_savedstate *savedstate;
495 /* Next value of __COUNTER__ macro. */
496 unsigned int counter;
498 /* Table of comments, when state.save_comments is true. */
499 cpp_comment_table comments;
501 /* List of saved macros by push_macro. */
502 struct def_pragma_macro *pushed_macros;
504 /* If non-null, the lexer will use this location for the next token
505 instead of getting a location from the linemap. */
506 source_location *forced_token_location_p;
509 /* Character classes. Based on the more primitive macros in safe-ctype.h.
510 If the definition of `numchar' looks odd to you, please look up the
511 definition of a pp-number in the C standard [section 6.4.8 of C99].
513 In the unlikely event that characters other than \r and \n enter
514 the set is_vspace, the macro handle_newline() in lex.c must be
516 #define _dollar_ok(x) ((x) == '$' && CPP_OPTION (pfile, dollars_in_ident))
518 #define is_idchar(x) (ISIDNUM(x) || _dollar_ok(x))
519 #define is_numchar(x) ISIDNUM(x)
520 #define is_idstart(x) (ISIDST(x) || _dollar_ok(x))
521 #define is_numstart(x) ISDIGIT(x)
522 #define is_hspace(x) ISBLANK(x)
523 #define is_vspace(x) IS_VSPACE(x)
524 #define is_nvspace(x) IS_NVSPACE(x)
525 #define is_space(x) IS_SPACE_OR_NUL(x)
527 /* This table is constant if it can be initialized at compile time,
528 which is the case if cpp was compiled with GCC >=2.7, or another
529 compiler that supports C99. */
530 #if HAVE_DESIGNATED_INITIALIZERS
531 extern const unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
533 extern unsigned char _cpp_trigraph_map[UCHAR_MAX + 1];
538 static inline int cpp_in_system_header (cpp_reader *);
540 cpp_in_system_header (cpp_reader *pfile)
542 return pfile->buffer ? pfile->buffer->sysp : 0;
544 #define CPP_PEDANTIC(PF) CPP_OPTION (PF, cpp_pedantic)
545 #define CPP_WTRADITIONAL(PF) CPP_OPTION (PF, cpp_warn_traditional)
547 static inline int cpp_in_primary_file (cpp_reader *);
549 cpp_in_primary_file (cpp_reader *pfile)
551 return pfile->line_table->depth == 1;
555 extern void _cpp_free_definition (cpp_hashnode *);
556 extern bool _cpp_create_definition (cpp_reader *, cpp_hashnode *);
557 extern void _cpp_pop_context (cpp_reader *);
558 extern void _cpp_push_text_context (cpp_reader *, cpp_hashnode *,
559 const unsigned char *, size_t);
560 extern bool _cpp_save_parameter (cpp_reader *, cpp_macro *, cpp_hashnode *);
561 extern bool _cpp_arguments_ok (cpp_reader *, cpp_macro *, const cpp_hashnode *,
563 extern const unsigned char *_cpp_builtin_macro_text (cpp_reader *,
565 extern int _cpp_warn_if_unused_macro (cpp_reader *, cpp_hashnode *, void *);
566 extern void _cpp_push_token_context (cpp_reader *, cpp_hashnode *,
567 const cpp_token *, unsigned int);
568 extern void _cpp_backup_tokens_direct (cpp_reader *, unsigned int);
570 /* In identifiers.c */
571 extern void _cpp_init_hashtable (cpp_reader *, hash_table *);
572 extern void _cpp_destroy_hashtable (cpp_reader *);
575 typedef struct _cpp_file _cpp_file;
576 extern _cpp_file *_cpp_find_file (cpp_reader *, const char *, cpp_dir *,
578 extern bool _cpp_find_failed (_cpp_file *);
579 extern void _cpp_mark_file_once_only (cpp_reader *, struct _cpp_file *);
580 extern void _cpp_fake_include (cpp_reader *, const char *);
581 extern bool _cpp_stack_file (cpp_reader *, _cpp_file*, bool);
582 extern bool _cpp_stack_include (cpp_reader *, const char *, int,
584 extern int _cpp_compare_file_date (cpp_reader *, const char *, int);
585 extern void _cpp_report_missing_guards (cpp_reader *);
586 extern void _cpp_init_files (cpp_reader *);
587 extern void _cpp_cleanup_files (cpp_reader *);
588 extern void _cpp_pop_file_buffer (cpp_reader *, struct _cpp_file *);
589 extern bool _cpp_save_file_entries (cpp_reader *pfile, FILE *f);
590 extern bool _cpp_read_file_entries (cpp_reader *, FILE *);
591 extern struct stat *_cpp_get_file_stat (_cpp_file *);
594 extern bool _cpp_parse_expr (cpp_reader *, bool);
595 extern struct op *_cpp_expand_op_stack (cpp_reader *);
598 extern void _cpp_process_line_notes (cpp_reader *, int);
599 extern void _cpp_clean_line (cpp_reader *);
600 extern bool _cpp_get_fresh_line (cpp_reader *);
601 extern bool _cpp_skip_block_comment (cpp_reader *);
602 extern cpp_token *_cpp_temp_token (cpp_reader *);
603 extern const cpp_token *_cpp_lex_token (cpp_reader *);
604 extern cpp_token *_cpp_lex_direct (cpp_reader *);
605 extern int _cpp_equiv_tokens (const cpp_token *, const cpp_token *);
606 extern void _cpp_init_tokenrun (tokenrun *, unsigned int);
607 extern cpp_hashnode *_cpp_lex_identifier (cpp_reader *, const char *);
610 extern void _cpp_maybe_push_include_file (cpp_reader *);
611 extern const char *cpp_named_operator2name (enum cpp_ttype type);
613 /* In directives.c */
614 extern int _cpp_test_assertion (cpp_reader *, unsigned int *);
615 extern int _cpp_handle_directive (cpp_reader *, int);
616 extern void _cpp_define_builtin (cpp_reader *, const char *);
617 extern char ** _cpp_save_pragma_names (cpp_reader *);
618 extern void _cpp_restore_pragma_names (cpp_reader *, char **);
619 extern int _cpp_do__Pragma (cpp_reader *);
620 extern void _cpp_init_directives (cpp_reader *);
621 extern void _cpp_init_internal_pragmas (cpp_reader *);
622 extern void _cpp_do_file_change (cpp_reader *, enum lc_reason, const char *,
623 linenum_type, unsigned int);
624 extern void _cpp_pop_buffer (cpp_reader *);
626 /* In directives.c */
627 struct _cpp_dir_only_callbacks
629 /* Called to print a block of lines. */
630 void (*print_lines) (int, const void *, size_t);
631 void (*maybe_print_line) (source_location);
634 extern void _cpp_preprocess_dir_only (cpp_reader *,
635 const struct _cpp_dir_only_callbacks *);
637 /* In traditional.c. */
638 extern bool _cpp_scan_out_logical_line (cpp_reader *, cpp_macro *);
639 extern bool _cpp_read_logical_line_trad (cpp_reader *);
640 extern void _cpp_overlay_buffer (cpp_reader *pfile, const unsigned char *,
642 extern void _cpp_remove_overlay (cpp_reader *);
643 extern bool _cpp_create_trad_definition (cpp_reader *, cpp_macro *);
644 extern bool _cpp_expansions_different_trad (const cpp_macro *,
646 extern unsigned char *_cpp_copy_replacement_text (const cpp_macro *,
648 extern size_t _cpp_replacement_text_len (const cpp_macro *);
652 /* The normalization state at this point in the sequence.
653 It starts initialized to all zeros, and at the end
654 'level' is the normalization level of the sequence. */
656 struct normalize_state
658 /* The previous character. */
660 /* The combining class of the previous character. */
661 unsigned char prev_class;
662 /* The lowest normalization level so far. */
663 enum cpp_normalize_level level;
665 #define INITIAL_NORMALIZE_STATE { 0, 0, normalized_KC }
666 #define NORMALIZE_STATE_RESULT(st) ((st)->level)
668 /* We saw a character that matches ISIDNUM(), update a
669 normalize_state appropriately. */
670 #define NORMALIZE_STATE_UPDATE_IDNUM(st) \
671 ((st)->previous = 0, (st)->prev_class = 0)
673 extern cppchar_t _cpp_valid_ucn (cpp_reader *, const unsigned char **,
674 const unsigned char *, int,
675 struct normalize_state *state);
676 extern void _cpp_destroy_iconv (cpp_reader *);
677 extern unsigned char *_cpp_convert_input (cpp_reader *, const char *,
678 unsigned char *, size_t, size_t,
679 const unsigned char **, off_t *);
680 extern const char *_cpp_default_encoding (void);
681 extern cpp_hashnode * _cpp_interpret_identifier (cpp_reader *pfile,
682 const unsigned char *id,
685 /* Utility routines and macros. */
686 #define DSC(str) (const unsigned char *)str, sizeof str - 1
688 /* These are inline functions instead of macros so we can get type
690 static inline int ustrcmp (const unsigned char *, const unsigned char *);
691 static inline int ustrncmp (const unsigned char *, const unsigned char *,
693 static inline size_t ustrlen (const unsigned char *);
694 static inline unsigned char *uxstrdup (const unsigned char *);
695 static inline unsigned char *ustrchr (const unsigned char *, int);
696 static inline int ufputs (const unsigned char *, FILE *);
698 /* Use a const char for the second parameter since it is usually a literal. */
699 static inline int ustrcspn (const unsigned char *, const char *);
702 ustrcmp (const unsigned char *s1, const unsigned char *s2)
704 return strcmp ((const char *)s1, (const char *)s2);
708 ustrncmp (const unsigned char *s1, const unsigned char *s2, size_t n)
710 return strncmp ((const char *)s1, (const char *)s2, n);
714 ustrcspn (const unsigned char *s1, const char *s2)
716 return strcspn ((const char *)s1, s2);
720 ustrlen (const unsigned char *s1)
722 return strlen ((const char *)s1);
725 static inline unsigned char *
726 uxstrdup (const unsigned char *s1)
728 return (unsigned char *) xstrdup ((const char *)s1);
731 static inline unsigned char *
732 ustrchr (const unsigned char *s1, int c)
734 return (unsigned char *) strchr ((const char *)s1, c);
738 ufputs (const unsigned char *s, FILE *f)
740 return fputs ((const char *)s, f);
745 /* Create a macro map. A macro map encodes source locations of tokens
746 that are part of a macro replacement-list, at a macro expansion
747 point. See the extensive comments of struct line_map and struct
748 line_map_macro, in line-map.h.
750 This map shall be created when the macro is expanded. The map
751 encodes the source location of the expansion point of the macro as
752 well as the "original" source location of each token that is part
753 of the macro replacement-list. If a macro is defined but never
754 expanded, it has no macro map. SET is the set of maps the macro
755 map should be part of. MACRO_NODE is the macro which the new macro
756 map should encode source locations for. EXPANSION is the location
757 of the expansion point of MACRO. For function-like macros
758 invocations, it's best to make it point to the closing parenthesis
759 of the macro, rather than the the location of the first character
760 of the macro. NUM_TOKENS is the number of tokens that are part of
761 the replacement-list of MACRO. */
762 const struct line_map *linemap_enter_macro (struct line_maps *,
763 struct cpp_hashnode*,
767 /* Create and return a virtual location for a token that is part of a
768 macro expansion-list at a macro expansion point. See the comment
769 inside struct line_map_macro to see what an expansion-list exactly
772 A call to this function must come after a call to
775 MAP is the map into which the source location is created. TOKEN_NO
776 is the index of the token in the macro replacement-list, starting
779 ORIG_LOC is the location of the token outside of this macro
780 expansion. If the token comes originally from the macro
781 definition, it is the locus in the macro definition; otherwise it
782 is a location in the context of the caller of this macro expansion
783 (which is a virtual location or a source location if the caller is
784 itself a macro expansion or not).
786 MACRO_DEFINITION_LOC is the location in the macro definition,
787 either of the token itself or of a macro parameter that it
789 source_location linemap_add_macro_token (const struct line_map *,
794 /* Return the source line number corresponding to source location
795 LOCATION. SET is the line map set LOCATION comes from. If
796 LOCATION is the location of token that is part of the
797 expansion-list of a macro expansion return the line number of the
798 macro expansion point. */
799 int linemap_get_expansion_line (struct line_maps *,
802 /* Return the path of the file corresponding to source code location
805 If LOCATION is the location of a token that is part of the
806 replacement-list of a macro expansion return the file path of the
807 macro expansion point.
809 SET is the line map set LOCATION comes from. */
810 const char* linemap_get_expansion_filename (struct line_maps *,
817 #endif /* ! LIBCPP_INTERNAL_H */