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Consolidate x-select-text.
[emacs.git] / lib-src / ebrowse.c
blob29a88e85f021ac7135f8c65292d3b4c943a0eb51
1 /* ebrowse.c --- parsing files for the ebrowse C++ browser
2
3 Copyright (C) 1992-2014 Free Software Foundation, Inc.
4
5 This file is part of GNU Emacs.
6
7 GNU Emacs is free software: you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation, either version 3 of the License, or
10 (at your option) any later version.
11
12 GNU Emacs is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
19
20
21 #include <config.h>
22 #include <stddef.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <ctype.h>
27 #include <assert.h>
28 #include <getopt.h>
29
30 /* The SunOS compiler doesn't have SEEK_END. */
31 #ifndef SEEK_END
32 #define SEEK_END 2
33 #endif
34
35 /* Conditionalize function prototypes. */
36
37 /* Value is non-zero if strings X and Y compare equal. */
38
39 #define streq(X, Y) (*(X) == *(Y) && strcmp ((X) + 1, (Y) + 1) == 0)
40
41 #include <min-max.h>
42
43 /* Files are read in chunks of this number of bytes. */
44
45 #define READ_CHUNK_SIZE (100 * 1024)
46
47 #if defined (__MSDOS__)
48 #define FILENAME_EQ(X,Y) (strcasecmp (X,Y) == 0)
49 #else
50 #if defined (WINDOWSNT)
51 #define FILENAME_EQ(X,Y) (stricmp (X,Y) == 0)
52 #else
53 #define FILENAME_EQ(X,Y) (streq (X,Y))
54 #endif
55 #endif
56 /* The default output file name. */
57
58 #define DEFAULT_OUTFILE "BROWSE"
59
60 /* A version string written to the output file. Change this whenever
61 the structure of the output file changes. */
62
63 #define EBROWSE_FILE_VERSION "ebrowse 5.0"
64
65 /* The output file consists of a tree of Lisp objects, with major
66 nodes built out of Lisp structures. These are the heads of the
67 Lisp structs with symbols identifying their type. */
68
69 #define TREE_HEADER_STRUCT "[ebrowse-hs "
70 #define TREE_STRUCT "[ebrowse-ts "
71 #define MEMBER_STRUCT "[ebrowse-ms "
72 #define CLASS_STRUCT "[ebrowse-cs "
73
74 /* The name of the symbol table entry for global functions, variables,
75 defines etc. This name also appears in the browser display. */
76
77 #define GLOBALS_NAME "*Globals*"
78
79 /* Token definitions. */
80
81 enum token
82 {
83 YYEOF = 0, /* end of file */
84 CSTRING = 256, /* string constant */
85 CCHAR, /* character constant */
86 CINT, /* integral constant */
87 CFLOAT, /* real constant */
88
89 ELLIPSIS, /* ... */
90 LSHIFTASGN, /* <<= */
91 RSHIFTASGN, /* >>= */
92 ARROWSTAR, /* ->* */
93 IDENT, /* identifier */
94 DIVASGN, /* /= */
95 INC, /* ++ */
96 ADDASGN, /* += */
97 DEC, /* -- */
98 ARROW, /* -> */
99 SUBASGN, /* -= */
100 MULASGN, /* *= */
101 MODASGN, /* %= */
102 LOR, /* || */
103 ORASGN, /* |= */
104 LAND, /* && */
105 ANDASGN, /* &= */
106 XORASGN, /* ^= */
107 POINTSTAR, /* .* */
108 DCOLON, /* :: */
109 EQ, /* == */
110 NE, /* != */
111 LE, /* <= */
112 LSHIFT, /* << */
113 GE, /* >= */
114 RSHIFT, /* >> */
115
116 /* Keywords. The undef's are there because these
117 three symbols are very likely to be defined somewhere. */
118 #undef BOOL
119 #undef TRUE
120 #undef FALSE
121
122 ASM, /* asm */
123 AUTO, /* auto */
124 BREAK, /* break */
125 CASE, /* case */
126 CATCH, /* catch */
127 CHAR, /* char */
128 CLASS, /* class */
129 CONST, /* const */
130 CONTINUE, /* continue */
131 DEFAULT, /* default */
132 DELETE, /* delete */
133 DO, /* do */
134 DOUBLE, /* double */
135 ELSE, /* else */
136 ENUM, /* enum */
137 EXTERN, /* extern */
138 FLOAT, /* float */
139 FOR, /* for */
140 FRIEND, /* friend */
141 GOTO, /* goto */
142 IF, /* if */
143 T_INLINE, /* inline */
144 INT, /* int */
145 LONG, /* long */
146 NEW, /* new */
147 OPERATOR, /* operator */
148 PRIVATE, /* private */
149 PROTECTED, /* protected */
150 PUBLIC, /* public */
151 REGISTER, /* register */
152 RETURN, /* return */
153 SHORT, /* short */
154 SIGNED, /* signed */
155 SIZEOF, /* sizeof */
156 STATIC, /* static */
157 STRUCT, /* struct */
158 SWITCH, /* switch */
159 TEMPLATE, /* template */
160 THIS, /* this */
161 THROW, /* throw */
162 TRY, /* try */
163 TYPEDEF, /* typedef */
164 UNION, /* union */
165 UNSIGNED, /* unsigned */
166 VIRTUAL, /* virtual */
167 VOID, /* void */
168 VOLATILE, /* volatile */
169 WHILE, /* while */
170 MUTABLE, /* mutable */
171 BOOL, /* bool */
172 TRUE, /* true */
173 FALSE, /* false */
174 SIGNATURE, /* signature (GNU extension) */
175 NAMESPACE, /* namespace */
176 EXPLICIT, /* explicit */
177 TYPENAME, /* typename */
178 CONST_CAST, /* const_cast */
179 DYNAMIC_CAST, /* dynamic_cast */
180 REINTERPRET_CAST, /* reinterpret_cast */
181 STATIC_CAST, /* static_cast */
182 TYPEID, /* typeid */
183 USING, /* using */
184 WCHAR /* wchar_t */
185 };
186
187 /* Storage classes, in a wider sense. */
188
189 enum sc
190 {
191 SC_UNKNOWN,
192 SC_MEMBER, /* Is an instance member. */
193 SC_STATIC, /* Is static member. */
194 SC_FRIEND, /* Is friend function. */
195 SC_TYPE /* Is a type definition. */
196 };
197
198 /* Member visibility. */
199
200 enum visibility
201 {
202 V_PUBLIC,
203 V_PROTECTED,
204 V_PRIVATE
205 };
206
207 /* Member flags. */
208
209 #define F_VIRTUAL 1 /* Is virtual function. */
210 #define F_INLINE 2 /* Is inline function. */
211 #define F_CONST 4 /* Is const. */
212 #define F_PURE 8 /* Is pure virtual function. */
213 #define F_MUTABLE 16 /* Is mutable. */
214 #define F_TEMPLATE 32 /* Is a template. */
215 #define F_EXPLICIT 64 /* Is explicit constructor. */
216 #define F_THROW 128 /* Has a throw specification. */
217 #define F_EXTERNC 256 /* Is declared extern "C". */
218 #define F_DEFINE 512 /* Is a #define. */
219
220 /* Two macros to set and test a bit in an int. */
221
222 #define SET_FLAG(F, FLAG) ((F) |= (FLAG))
223 #define HAS_FLAG(F, FLAG) (((F) & (FLAG)) != 0)
224
225 /* Structure describing a class member. */
226
227 struct member
228 {
229 struct member *next; /* Next in list of members. */
230 struct member *anext; /* Collision chain in member_table. */
231 struct member **list; /* Pointer to list in class. */
232 unsigned param_hash; /* Hash value for parameter types. */
233 int vis; /* Visibility (public, ...). */
234 int flags; /* See F_* above. */
235 char *regexp; /* Matching regular expression. */
236 const char *filename; /* Don't free this shared string. */
237 int pos; /* Buffer position of occurrence. */
238 char *def_regexp; /* Regular expression matching definition. */
239 const char *def_filename; /* File name of definition. */
240 int def_pos; /* Buffer position of definition. */
241 char name[FLEXIBLE_ARRAY_MEMBER]; /* Member name. */
242 };
243
244 /* Structures of this type are used to connect class structures with
245 their super and subclasses. */
246
247 struct link
248 {
249 struct sym *sym; /* The super or subclass. */
250 struct link *next; /* Next in list or NULL. */
251 };
252
253 /* Structure used to record namespace aliases. */
254
255 struct alias
256 {
257 struct alias *next; /* Next in list. */
258 struct sym *namesp; /* Namespace in which defined. */
259 struct link *aliasee; /* List of aliased namespaces (A::B::C...). */
260 char name[FLEXIBLE_ARRAY_MEMBER]; /* Alias name. */
261 };
262
263 /* The structure used to describe a class in the symbol table,
264 or a namespace in all_namespaces. */
265
266 struct sym
267 {
268 int flags; /* Is class a template class?. */
269 unsigned char visited; /* Used to find circles. */
270 struct sym *next; /* Hash collision list. */
271 struct link *subs; /* List of subclasses. */
272 struct link *supers; /* List of superclasses. */
273 struct member *vars; /* List of instance variables. */
274 struct member *fns; /* List of instance functions. */
275 struct member *static_vars; /* List of static variables. */
276 struct member *static_fns; /* List of static functions. */
277 struct member *friends; /* List of friend functions. */
278 struct member *types; /* List of local types. */
279 char *regexp; /* Matching regular expression. */
280 int pos; /* Buffer position. */
281 const char *filename; /* File in which it can be found. */
282 const char *sfilename; /* File in which members can be found. */
283 struct sym *namesp; /* Namespace in which defined. . */
284 char name[FLEXIBLE_ARRAY_MEMBER]; /* Name of the class. */
285 };
286
287 /* Experimental: Print info for `--position-info'. We print
288 '(CLASS-NAME SCOPE MEMBER-NAME). */
289
290 #define P_DEFN 1
291 #define P_DECL 2
292
293 int info_where;
294 struct sym *info_cls = NULL;
295 struct member *info_member = NULL;
296
297 /* Experimental. For option `--position-info', the buffer position we
298 are interested in. When this position is reached, print out
299 information about what we know about that point. */
300
301 int info_position = -1;
302
303 /* Command line options structure for getopt_long. */
304
305 struct option options[] =
306 {
307 {"append", no_argument, NULL, 'a'},
308 {"files", required_argument, NULL, 'f'},
309 {"help", no_argument, NULL, -2},
310 {"min-regexp-length", required_argument, NULL, 'm'},
311 {"max-regexp-length", required_argument, NULL, 'M'},
312 {"no-nested-classes", no_argument, NULL, 'n'},
313 {"no-regexps", no_argument, NULL, 'x'},
314 {"no-structs-or-unions", no_argument, NULL, 's'},
315 {"output-file", required_argument, NULL, 'o'},
316 {"position-info", required_argument, NULL, 'p'},
317 {"search-path", required_argument, NULL, 'I'},
318 {"verbose", no_argument, NULL, 'v'},
319 {"version", no_argument, NULL, -3},
320 {"very-verbose", no_argument, NULL, 'V'},
321 {NULL, 0, NULL, 0}
322 };
323
324 /* Semantic values of tokens. Set by yylex.. */
325
326 unsigned yyival; /* Set for token CINT. */
327 char *yytext; /* Set for token IDENT. */
328 char *yytext_end;
329
330 /* Output file. */
331
332 FILE *yyout;
333
334 /* Current line number. */
335
336 int yyline;
337
338 /* The name of the current input file. */
339
340 const char *filename;
341
342 /* Three character class vectors, and macros to test membership
343 of characters. */
344
345 char is_ident[255];
346 char is_digit[255];
347 char is_white[255];
348
349 #define IDENTP(C) is_ident[(unsigned char) (C)]
350 #define DIGITP(C) is_digit[(unsigned char) (C)]
351 #define WHITEP(C) is_white[(unsigned char) (C)]
352
353 /* Command line flags. */
354
355 int f_append;
356 int f_verbose;
357 int f_very_verbose;
358 int f_structs = 1;
359 int f_regexps = 1;
360 int f_nested_classes = 1;
361
362 /* Maximum and minimum lengths of regular expressions matching a
363 member, class etc., for writing them to the output file. These are
364 overridable from the command line. */
365
366 int min_regexp = 5;
367 int max_regexp = 50;
368
369 /* Input buffer. */
370
371 char *inbuffer;
372 char *in;
373 size_t inbuffer_size;
374
375 /* Return the current buffer position in the input file. */
376
377 #define BUFFER_POS() (in - inbuffer)
378
379 /* If current lookahead is CSTRING, the following points to the
380 first character in the string constant. Used for recognizing
381 extern "C". */
382
383 char *string_start;
384
385 /* The size of the hash tables for classes.and members. Should be
386 prime. */
387
388 #define TABLE_SIZE 1001
389
390 /* The hash table for class symbols. */
391
392 struct sym *class_table[TABLE_SIZE];
393
394 /* Hash table containing all member structures. This is generally
395 faster for member lookup than traversing the member lists of a
396 `struct sym'. */
397
398 struct member *member_table[TABLE_SIZE];
399
400 /* Hash table for namespace aliases */
401
402 struct alias *namespace_alias_table[TABLE_SIZE];
403
404 /* The special class symbol used to hold global functions,
405 variables etc. */
406
407 struct sym *global_symbols;
408
409 /* The current namespace. */
410
411 struct sym *current_namespace;
412
413 /* The list of all known namespaces. */
414
415 struct sym *all_namespaces;
416
417 /* Stack of namespaces we're currently nested in, during the parse. */
418
419 struct sym **namespace_stack;
420 int namespace_stack_size;
421 int namespace_sp;
422
423 /* The current lookahead token. */
424
425 int tk = -1;
426
427 /* Structure describing a keyword. */
428
429 struct kw
430 {
431 const char *name; /* Spelling. */
432 int tk; /* Token value. */
433 struct kw *next; /* Next in collision chain. */
434 };
435
436 /* Keywords are lookup up in a hash table of their own. */
437
438 #define KEYWORD_TABLE_SIZE 1001
439 struct kw *keyword_table[KEYWORD_TABLE_SIZE];
440
441 /* Search path. */
442
443 struct search_path
444 {
445 char *path;
446 struct search_path *next;
447 };
448
449 struct search_path *search_path;
450 struct search_path *search_path_tail;
451
452 /* Function prototypes. */
453
454 static char *matching_regexp (void);
455 static struct sym *add_sym (const char *, struct sym *);
456 static void add_global_defn (char *, char *, int, unsigned, int, int, int);
457 static void add_global_decl (char *, char *, int, unsigned, int, int, int);
458 static struct member *add_member (struct sym *, char *, int, int, unsigned);
459 static void class_definition (struct sym *, int, int, int);
460 static char *operator_name (int *);
461 static void parse_qualified_param_ident_or_type (char **);
462 \f
463 /***********************************************************************
464 Utilities
465 ***********************************************************************/
466
467 /* Print an error in a printf-like style with the current input file
468 name and line number. */
469
470 static void
471 yyerror (const char *format, const char *s)
472 {
473 fprintf (stderr, "%s:%d: ", filename, yyline);
474 fprintf (stderr, format, s);
475 putc ('\n', stderr);
476 }
477
478
479 /* Like malloc but print an error and exit if not enough memory is
480 available. */
481
482 static void *
483 xmalloc (size_t nbytes)
484 {
485 void *p = malloc (nbytes);
486 if (p == NULL)
487 {
488 yyerror ("out of memory", NULL);
489 exit (EXIT_FAILURE);
490 }
491 return p;
492 }
493
494
495 /* Like realloc but print an error and exit if out of memory. */
496
497 static void *
498 xrealloc (void *p, size_t sz)
499 {
500 p = realloc (p, sz);
501 if (p == NULL)
502 {
503 yyerror ("out of memory", NULL);
504 exit (EXIT_FAILURE);
505 }
506 return p;
507 }
508
509
510 /* Like strdup, but print an error and exit if not enough memory is
511 available.. If S is null, return null. */
512
513 static char *
514 xstrdup (char *s)
515 {
516 if (s)
517 return strcpy (xmalloc (strlen (s) + 1), s);
518 return s;
519 }
520
521
522 \f
523 /***********************************************************************
524 Symbols
525 ***********************************************************************/
526
527 /* Initialize the symbol table. This currently only sets up the
528 special symbol for globals (`*Globals*'). */
529
530 static void
531 init_sym (void)
532 {
533 global_symbols = add_sym (GLOBALS_NAME, NULL);
534 }
535
536
537 /* Add a symbol for class NAME to the symbol table. NESTED_IN_CLASS
538 is the class in which class NAME was found. If it is null,
539 this means the scope of NAME is the current namespace.
540
541 If a symbol for NAME already exists, return that. Otherwise
542 create a new symbol and set it to default values. */
543
544 static struct sym *
545 add_sym (const char *name, struct sym *nested_in_class)
546 {
547 struct sym *sym;
548 unsigned h;
549 const char *s;
550 struct sym *scope = nested_in_class ? nested_in_class : current_namespace;
551
552 for (s = name, h = 0; *s; ++s)
553 h = (h << 1) ^ *s;
554 h %= TABLE_SIZE;
555
556 for (sym = class_table[h]; sym; sym = sym->next)
557 if (streq (name, sym->name)
558 && ((!sym->namesp && !scope)
559 || (sym->namesp && scope
560 && streq (sym->namesp->name, scope->name))))
561 break;
562
563 if (sym == NULL)
564 {
565 if (f_very_verbose)
566 {
567 putchar ('\t');
568 puts (name);
569 }
570
571 sym = xmalloc (offsetof (struct sym, name) + strlen (name) + 1);
572 memset (sym, 0, offsetof (struct sym, name));
573 strcpy (sym->name, name);
574 sym->namesp = scope;
575 sym->next = class_table[h];
576 class_table[h] = sym;
577 }
578
579 return sym;
580 }
581
582
583 /* Add links between superclass SUPER and subclass SUB. */
584
585 static void
586 add_link (struct sym *super, struct sym *sub)
587 {
588 struct link *lnk, *lnk2, *p, *prev;
589
590 /* See if a link already exists. */
591 for (p = super->subs, prev = NULL;
592 p && strcmp (sub->name, p->sym->name) > 0;
593 prev = p, p = p->next)
594 ;
595
596 /* Avoid duplicates. */
597 if (p == NULL || p->sym != sub)
598 {
599 lnk = (struct link *) xmalloc (sizeof *lnk);
600 lnk2 = (struct link *) xmalloc (sizeof *lnk2);
601
602 lnk->sym = sub;
603 lnk->next = p;
604
605 if (prev)
606 prev->next = lnk;
607 else
608 super->subs = lnk;
609
610 lnk2->sym = super;
611 lnk2->next = sub->supers;
612 sub->supers = lnk2;
613 }
614 }
615
616
617 /* Find in class CLS member NAME.
618
619 VAR non-zero means look for a member variable; otherwise a function
620 is searched. SC specifies what kind of member is searched---a
621 static, or per-instance member etc. HASH is a hash code for the
622 parameter types of functions. Value is a pointer to the member
623 found or null if not found. */
624
625 static struct member *
626 find_member (struct sym *cls, char *name, int var, int sc, unsigned int hash)
627 {
628 struct member **list;
629 struct member *p;
630 unsigned name_hash = 0;
631 char *s;
632 int i;
633
634 switch (sc)
635 {
636 case SC_FRIEND:
637 list = &cls->friends;
638 break;
639
640 case SC_TYPE:
641 list = &cls->types;
642 break;
643
644 case SC_STATIC:
645 list = var ? &cls->static_vars : &cls->static_fns;
646 break;
647
648 default:
649 list = var ? &cls->vars : &cls->fns;
650 break;
651 }
652
653 for (s = name; *s; ++s)
654 name_hash = (name_hash << 1) ^ *s;
655 i = name_hash % TABLE_SIZE;
656
657 for (p = member_table[i]; p; p = p->anext)
658 if (p->list == list && p->param_hash == hash && streq (name, p->name))
659 break;
660
661 return p;
662 }
663
664
665 /* Add to class CLS information for the declaration of member NAME.
666 REGEXP is a regexp matching the declaration, if non-null. POS is
667 the position in the source where the declaration is found. HASH is
668 a hash code for the parameter list of the member, if it's a
669 function. VAR non-zero means member is a variable or type. SC
670 specifies the type of member (instance member, static, ...). VIS
671 is the member's visibility (public, protected, private). FLAGS is
672 a bit set giving additional information about the member (see the
673 F_* defines). */
674
675 static void
676 add_member_decl (struct sym *cls, char *name, char *regexp, int pos, unsigned int hash, int var, int sc, int vis, int flags)
677 {
678 struct member *m;
679
680 m = find_member (cls, name, var, sc, hash);
681 if (m == NULL)
682 m = add_member (cls, name, var, sc, hash);
683
684 /* Have we seen a new filename? If so record that. */
685 if (!cls->filename || !FILENAME_EQ (cls->filename, filename))
686 m->filename = filename;
687
688 m->regexp = regexp;
689 m->pos = pos;
690 m->flags = flags;
691
692 switch (vis)
693 {
694 case PRIVATE:
695 m->vis = V_PRIVATE;
696 break;
697
698 case PROTECTED:
699 m->vis = V_PROTECTED;
700 break;
701
702 case PUBLIC:
703 m->vis = V_PUBLIC;
704 break;
705 }
706
707 info_where = P_DECL;
708 info_cls = cls;
709 info_member = m;
710 }
711
712
713 /* Add to class CLS information for the definition of member NAME.
714 REGEXP is a regexp matching the declaration, if non-null. POS is
715 the position in the source where the declaration is found. HASH is
716 a hash code for the parameter list of the member, if it's a
717 function. VAR non-zero means member is a variable or type. SC
718 specifies the type of member (instance member, static, ...). VIS
719 is the member's visibility (public, protected, private). FLAGS is
720 a bit set giving additional information about the member (see the
721 F_* defines). */
722
723 static void
724 add_member_defn (struct sym *cls, char *name, char *regexp, int pos, unsigned int hash, int var, int sc, int flags)
725 {
726 struct member *m;
727
728 if (sc == SC_UNKNOWN)
729 {
730 m = find_member (cls, name, var, SC_MEMBER, hash);
731 if (m == NULL)
732 {
733 m = find_member (cls, name, var, SC_STATIC, hash);
734 if (m == NULL)
735 m = add_member (cls, name, var, sc, hash);
736 }
737 }
738 else
739 {
740 m = find_member (cls, name, var, sc, hash);
741 if (m == NULL)
742 m = add_member (cls, name, var, sc, hash);
743 }
744
745 if (!cls->sfilename)
746 cls->sfilename = filename;
747
748 if (!FILENAME_EQ (cls->sfilename, filename))
749 m->def_filename = filename;
750
751 m->def_regexp = regexp;
752 m->def_pos = pos;
753 m->flags |= flags;
754
755 info_where = P_DEFN;
756 info_cls = cls;
757 info_member = m;
758 }
759
760
761 /* Add a symbol for a define named NAME to the symbol table.
762 REGEXP is a regular expression matching the define in the source,
763 if it is non-null. POS is the position in the file. */
764
765 static void
766 add_define (char *name, char *regexp, int pos)
767 {
768 add_global_defn (name, regexp, pos, 0, 1, SC_FRIEND, F_DEFINE);
769 add_global_decl (name, regexp, pos, 0, 1, SC_FRIEND, F_DEFINE);
770 }
771
772
773 /* Add information for the global definition of NAME.
774 REGEXP is a regexp matching the declaration, if non-null. POS is
775 the position in the source where the declaration is found. HASH is
776 a hash code for the parameter list of the member, if it's a
777 function. VAR non-zero means member is a variable or type. SC
778 specifies the type of member (instance member, static, ...). VIS
779 is the member's visibility (public, protected, private). FLAGS is
780 a bit set giving additional information about the member (see the
781 F_* defines). */
782
783 static void
784 add_global_defn (char *name, char *regexp, int pos, unsigned int hash, int var, int sc, int flags)
785 {
786 int i;
787 struct sym *sym;
788
789 /* Try to find out for which classes a function is a friend, and add
790 what we know about it to them. */
791 if (!var)
792 for (i = 0; i < TABLE_SIZE; ++i)
793 for (sym = class_table[i]; sym; sym = sym->next)
794 if (sym != global_symbols && sym->friends)
795 if (find_member (sym, name, 0, SC_FRIEND, hash))
796 add_member_defn (sym, name, regexp, pos, hash, 0,
797 SC_FRIEND, flags);
798
799 /* Add to global symbols. */
800 add_member_defn (global_symbols, name, regexp, pos, hash, var, sc, flags);
801 }
802
803
804 /* Add information for the global declaration of NAME.
805 REGEXP is a regexp matching the declaration, if non-null. POS is
806 the position in the source where the declaration is found. HASH is
807 a hash code for the parameter list of the member, if it's a
808 function. VAR non-zero means member is a variable or type. SC
809 specifies the type of member (instance member, static, ...). VIS
810 is the member's visibility (public, protected, private). FLAGS is
811 a bit set giving additional information about the member (see the
812 F_* defines). */
813
814 static void
815 add_global_decl (char *name, char *regexp, int pos, unsigned int hash, int var, int sc, int flags)
816 {
817 /* Add declaration only if not already declared. Header files must
818 be processed before source files for this to have the right effect.
819 I do not want to handle implicit declarations at the moment. */
820 struct member *m;
821 struct member *found;
822
823 m = found = find_member (global_symbols, name, var, sc, hash);
824 if (m == NULL)
825 m = add_member (global_symbols, name, var, sc, hash);
826
827 /* Definition already seen => probably last declaration implicit.
828 Override. This means that declarations must always be added to
829 the symbol table before definitions. */
830 if (!found)
831 {
832 if (!global_symbols->filename
833 || !FILENAME_EQ (global_symbols->filename, filename))
834 m->filename = filename;
835
836 m->regexp = regexp;
837 m->pos = pos;
838 m->vis = V_PUBLIC;
839 m->flags = flags;
840
841 info_where = P_DECL;
842 info_cls = global_symbols;
843 info_member = m;
844 }
845 }
846
847
848 /* Add a symbol for member NAME to class CLS.
849 VAR non-zero means it's a variable. SC specifies the kind of
850 member. HASH is a hash code for the parameter types of a function.
851 Value is a pointer to the member's structure. */
852
853 static struct member *
854 add_member (struct sym *cls, char *name, int var, int sc, unsigned int hash)
855 {
856 struct member *m = xmalloc (offsetof (struct member, name)
857 + strlen (name) + 1);
858 struct member **list;
859 struct member *p;
860 struct member *prev;
861 unsigned name_hash = 0;
862 int i;
863 char *s;
864
865 strcpy (m->name, name);
866 m->param_hash = hash;
867
868 m->vis = 0;
869 m->flags = 0;
870 m->regexp = NULL;
871 m->filename = NULL;
872 m->pos = 0;
873 m->def_regexp = NULL;
874 m->def_filename = NULL;
875 m->def_pos = 0;
876
877 assert (cls != NULL);
878
879 switch (sc)
880 {
881 case SC_FRIEND:
882 list = &cls->friends;
883 break;
884
885 case SC_TYPE:
886 list = &cls->types;
887 break;
888
889 case SC_STATIC:
890 list = var ? &cls->static_vars : &cls->static_fns;
891 break;
892
893 default:
894 list = var ? &cls->vars : &cls->fns;
895 break;
896 }
897
898 for (s = name; *s; ++s)
899 name_hash = (name_hash << 1) ^ *s;
900 i = name_hash % TABLE_SIZE;
901 m->anext = member_table[i];
902 member_table[i] = m;
903 m->list = list;
904
905 /* Keep the member list sorted. It's cheaper to do it here than to
906 sort them in Lisp. */
907 for (prev = NULL, p = *list;
908 p && strcmp (name, p->name) > 0;
909 prev = p, p = p->next)
910 ;
911
912 m->next = p;
913 if (prev)
914 prev->next = m;
915 else
916 *list = m;
917 return m;
918 }
919
920
921 /* Given the root R of a class tree, step through all subclasses
922 recursively, marking functions as virtual that are declared virtual
923 in base classes. */
924
925 static void
926 mark_virtual (struct sym *r)
927 {
928 struct link *p;
929 struct member *m, *m2;
930
931 for (p = r->subs; p; p = p->next)
932 {
933 for (m = r->fns; m; m = m->next)
934 if (HAS_FLAG (m->flags, F_VIRTUAL))
935 {
936 for (m2 = p->sym->fns; m2; m2 = m2->next)
937 if (m->param_hash == m2->param_hash && streq (m->name, m2->name))
938 SET_FLAG (m2->flags, F_VIRTUAL);
939 }
940
941 mark_virtual (p->sym);
942 }
943 }
944
945
946 /* For all roots of the class tree, mark functions as virtual that
947 are virtual because of a virtual declaration in a base class. */
948
949 static void
950 mark_inherited_virtual (void)
951 {
952 struct sym *r;
953 int i;
954
955 for (i = 0; i < TABLE_SIZE; ++i)
956 for (r = class_table[i]; r; r = r->next)
957 if (r->supers == NULL)
958 mark_virtual (r);
959 }
960
961
962 /* Create and return a symbol for a namespace with name NAME. */
963
964 static struct sym *
965 make_namespace (char *name, struct sym *context)
966 {
967 struct sym *s = xmalloc (offsetof (struct sym, name) + strlen (name) + 1);
968 memset (s, 0, offsetof (struct sym, name));
969 strcpy (s->name, name);
970 s->next = all_namespaces;
971 s->namesp = context;
972 all_namespaces = s;
973 return s;
974 }
975
976
977 /* Find the symbol for namespace NAME. If not found, return NULL */
978
979 static struct sym *
980 check_namespace (char *name, struct sym *context)
981 {
982 struct sym *p = NULL;
983
984 for (p = all_namespaces; p; p = p->next)
985 {
986 if (streq (p->name, name) && (p->namesp == context))
987 break;
988 }
989
990 return p;
991 }
992
993 /* Find the symbol for namespace NAME. If not found, add a new symbol
994 for NAME to all_namespaces. */
995
996 static struct sym *
997 find_namespace (char *name, struct sym *context)
998 {
999 struct sym *p = check_namespace (name, context);
1000
1001 if (p == NULL)
1002 p = make_namespace (name, context);
1003
1004 return p;
1005 }
1006
1007
1008 /* Find namespace alias with name NAME. If not found return NULL. */
1009
1010 static struct link *
1011 check_namespace_alias (char *name)
1012 {
1013 struct link *p = NULL;
1014 struct alias *al;
1015 unsigned h;
1016 char *s;
1017
1018 for (s = name, h = 0; *s; ++s)
1019 h = (h << 1) ^ *s;
1020 h %= TABLE_SIZE;
1021
1022 for (al = namespace_alias_table[h]; al; al = al->next)
1023 if (streq (name, al->name) && (al->namesp == current_namespace))
1024 {
1025 p = al->aliasee;
1026 break;
1027 }
1028
1029 return p;
1030 }
1031
1032 /* Register the name NEW_NAME as an alias for namespace list OLD_NAME. */
1033
1034 static void
1035 register_namespace_alias (char *new_name, struct link *old_name)
1036 {
1037 unsigned h;
1038 char *s;
1039 struct alias *al;
1040
1041 for (s = new_name, h = 0; *s; ++s)
1042 h = (h << 1) ^ *s;
1043 h %= TABLE_SIZE;
1044
1045
1046 /* Is it already in the table of aliases? */
1047 for (al = namespace_alias_table[h]; al; al = al->next)
1048 if (streq (new_name, al->name) && (al->namesp == current_namespace))
1049 return;
1050
1051 al = xmalloc (offsetof (struct alias, name) + strlen (new_name) + 1);
1052 strcpy (al->name, new_name);
1053 al->next = namespace_alias_table[h];
1054 al->namesp = current_namespace;
1055 al->aliasee = old_name;
1056 namespace_alias_table[h] = al;
1057 }
1058
1059
1060 /* Enter namespace with name NAME. */
1061
1062 static void
1063 enter_namespace (char *name)
1064 {
1065 struct sym *p = find_namespace (name, current_namespace);
1066
1067 if (namespace_sp == namespace_stack_size)
1068 {
1069 int size = max (10, 2 * namespace_stack_size);
1070 namespace_stack
1071 = (struct sym **) xrealloc ((void *)namespace_stack,
1072 size * sizeof *namespace_stack);
1073 namespace_stack_size = size;
1074 }
1075
1076 namespace_stack[namespace_sp++] = current_namespace;
1077 current_namespace = p;
1078 }
1079
1080
1081 /* Leave the current namespace. */
1082
1083 static void
1084 leave_namespace (void)
1085 {
1086 assert (namespace_sp > 0);
1087 current_namespace = namespace_stack[--namespace_sp];
1088 }
1089
1090
1091 \f
1092 /***********************************************************************
1093 Writing the Output File
1094 ***********************************************************************/
1095
1096 /* Write string S to the output file FP in a Lisp-readable form.
1097 If S is null, write out `()'. */
1098
1099 static void
1100 putstr (const char *s, FILE *fp)
1101 {
1102 if (!s)
1103 {
1104 putc ('(', fp);
1105 putc (')', fp);
1106 putc (' ', fp);
1107 }
1108 else
1109 {
1110 putc ('"', fp);
1111 fputs (s, fp);
1112 putc ('"', fp);
1113 putc (' ', fp);
1114 }
1115 }
1116
1117 /* A dynamically allocated buffer for constructing a scope name. */
1118
1119 char *scope_buffer;
1120 int scope_buffer_size;
1121 int scope_buffer_len;
1122
1123
1124 /* Make sure scope_buffer has enough room to add LEN chars to it. */
1125
1126 static void
1127 ensure_scope_buffer_room (int len)
1128 {
1129 if (scope_buffer_len + len >= scope_buffer_size)
1130 {
1131 int new_size = max (2 * scope_buffer_size, scope_buffer_len + len);
1132 scope_buffer = (char *) xrealloc (scope_buffer, new_size);
1133 scope_buffer_size = new_size;
1134 }
1135 }
1136
1137
1138 /* Recursively add the scope names of symbol P and the scopes of its
1139 namespaces to scope_buffer. Value is a pointer to the complete
1140 scope name constructed. */
1141
1142 static char *
1143 sym_scope_1 (struct sym *p)
1144 {
1145 int len;
1146
1147 if (p->namesp)
1148 sym_scope_1 (p->namesp);
1149
1150 if (*scope_buffer)
1151 {
1152 ensure_scope_buffer_room (3);
1153 strcat (scope_buffer, "::");
1154 scope_buffer_len += 2;
1155 }
1156
1157 len = strlen (p->name);
1158 ensure_scope_buffer_room (len + 1);
1159 strcat (scope_buffer, p->name);
1160 scope_buffer_len += len;
1161
1162 if (HAS_FLAG (p->flags, F_TEMPLATE))
1163 {
1164 ensure_scope_buffer_room (3);
1165 strcat (scope_buffer, "<>");
1166 scope_buffer_len += 2;
1167 }
1168
1169 return scope_buffer;
1170 }
1171
1172
1173 /* Return the scope of symbol P in printed representation, i.e.
1174 as it would appear in a C*+ source file. */
1175
1176 static char *
1177 sym_scope (struct sym *p)
1178 {
1179 if (!scope_buffer)
1180 {
1181 scope_buffer_size = 1024;
1182 scope_buffer = (char *) xmalloc (scope_buffer_size);
1183 }
1184
1185 *scope_buffer = '\0';
1186 scope_buffer_len = 0;
1187
1188 if (p->namesp)
1189 sym_scope_1 (p->namesp);
1190
1191 return scope_buffer;
1192 }
1193
1194
1195 /* Dump the list of members M to file FP. Value is the length of the
1196 list. */
1197
1198 static int
1199 dump_members (FILE *fp, struct member *m)
1200 {
1201 int n;
1202
1203 putc ('(', fp);
1204
1205 for (n = 0; m; m = m->next, ++n)
1206 {
1207 fputs (MEMBER_STRUCT, fp);
1208 putstr (m->name, fp);
1209 putstr (NULL, fp); /* FIXME? scope for globals */
1210 fprintf (fp, "%u ", (unsigned) m->flags);
1211 putstr (m->filename, fp);
1212 putstr (m->regexp, fp);
1213 fprintf (fp, "%u ", (unsigned) m->pos);
1214 fprintf (fp, "%u ", (unsigned) m->vis);
1215 putc (' ', fp);
1216 putstr (m->def_filename, fp);
1217 putstr (m->def_regexp, fp);
1218 fprintf (fp, "%u", (unsigned) m->def_pos);
1219 putc (']', fp);
1220 putc ('\n', fp);
1221 }
1222
1223 putc (')', fp);
1224 putc ('\n', fp);
1225 return n;
1226 }
1227
1228
1229 /* Dump class ROOT to stream FP. */
1230
1231 static void
1232 dump_sym (FILE *fp, struct sym *root)
1233 {
1234 fputs (CLASS_STRUCT, fp);
1235 putstr (root->name, fp);
1236
1237 /* Print scope, if any. */
1238 if (root->namesp)
1239 putstr (sym_scope (root), fp);
1240 else
1241 putstr (NULL, fp);
1242
1243 /* Print flags. */
1244 fprintf (fp, "%u", root->flags);
1245 putstr (root->filename, fp);
1246 putstr (root->regexp, fp);
1247 fprintf (fp, "%u", (unsigned) root->pos);
1248 putstr (root->sfilename, fp);
1249 putc (']', fp);
1250 putc ('\n', fp);
1251 }
1252
1253
1254 /* Dump class ROOT and its subclasses to file FP. Value is the
1255 number of classes written. */
1256
1257 static int
1258 dump_tree (FILE *fp, struct sym *root)
1259 {
1260 struct link *lk;
1261 unsigned n = 0;
1262
1263 dump_sym (fp, root);
1264
1265 if (f_verbose)
1266 {
1267 putchar ('+');
1268 fflush (stdout);
1269 }
1270
1271 putc ('(', fp);
1272
1273 for (lk = root->subs; lk; lk = lk->next)
1274 {
1275 fputs (TREE_STRUCT, fp);
1276 n += dump_tree (fp, lk->sym);
1277 putc (']', fp);
1278 }
1279
1280 putc (')', fp);
1281
1282 dump_members (fp, root->vars);
1283 n += dump_members (fp, root->fns);
1284 dump_members (fp, root->static_vars);
1285 n += dump_members (fp, root->static_fns);
1286 n += dump_members (fp, root->friends);
1287 dump_members (fp, root->types);
1288
1289 /* Superclasses. */
1290 putc ('(', fp);
1291 putc (')', fp);
1292
1293 /* Mark slot. */
1294 putc ('(', fp);
1295 putc (')', fp);
1296
1297 putc ('\n', fp);
1298 return n;
1299 }
1300
1301
1302 /* Dump the entire class tree to file FP. */
1303
1304 static void
1305 dump_roots (FILE *fp)
1306 {
1307 int i, n = 0;
1308 struct sym *r;
1309
1310 /* Output file header containing version string, command line
1311 options etc. */
1312 if (!f_append)
1313 {
1314 fputs (TREE_HEADER_STRUCT, fp);
1315 putstr (EBROWSE_FILE_VERSION, fp);
1316
1317 putc ('\"', fp);
1318 if (!f_structs)
1319 fputs (" -s", fp);
1320 if (f_regexps)
1321 fputs (" -x", fp);
1322 putc ('\"', fp);
1323 fputs (" ()", fp);
1324 fputs (" ()", fp);
1325 putc (']', fp);
1326 }
1327
1328 /* Mark functions as virtual that are so because of functions
1329 declared virtual in base classes. */
1330 mark_inherited_virtual ();
1331
1332 /* Dump the roots of the graph. */
1333 for (i = 0; i < TABLE_SIZE; ++i)
1334 for (r = class_table[i]; r; r = r->next)
1335 if (!r->supers)
1336 {
1337 fputs (TREE_STRUCT, fp);
1338 n += dump_tree (fp, r);
1339 putc (']', fp);
1340 }
1341
1342 if (f_verbose)
1343 putchar ('\n');
1344 }
1345
1346
1347 \f
1348 /***********************************************************************
1349 Scanner
1350 ***********************************************************************/
1351
1352 #ifdef DEBUG
1353 #define INCREMENT_LINENO \
1354 do { \
1355 if (f_very_verbose) \
1356 { \
1357 ++yyline; \
1358 printf ("%d:\n", yyline); \
1359 } \
1360 else \
1361 ++yyline; \
1362 } while (0)
1363 #else
1364 #define INCREMENT_LINENO ++yyline
1365 #endif
1366
1367 /* Define two macros for accessing the input buffer (current input
1368 file). GET(C) sets C to the next input character and advances the
1369 input pointer. UNGET retracts the input pointer. */
1370
1371 #define GET(C) ((C) = *in++)
1372 #define UNGET() (--in)
1373
1374
1375 /* Process a preprocessor line. Value is the next character from the
1376 input buffer not consumed. */
1377
1378 static int
1379 process_pp_line (void)
1380 {
1381 int in_comment = 0, in_string = 0;
1382 int c;
1383 char *p = yytext;
1384
1385 /* Skip over white space. The `#' has been consumed already. */
1386 while (WHITEP (GET (c)))
1387 ;
1388
1389 /* Read the preprocessor command (if any). */
1390 while (IDENTP (c))
1391 {
1392 *p++ = c;
1393 GET (c);
1394 }
1395
1396 /* Is it a `define'? */
1397 *p = '\0';
1398
1399 if (*yytext && streq (yytext, "define"))
1400 {
1401 p = yytext;
1402 while (WHITEP (c))
1403 GET (c);
1404 while (IDENTP (c))
1405 {
1406 *p++ = c;
1407 GET (c);
1408 }
1409
1410 *p = '\0';
1411
1412 if (*yytext)
1413 {
1414 char *regexp = matching_regexp ();
1415 int pos = BUFFER_POS ();
1416 add_define (yytext, regexp, pos);
1417 }
1418 }
1419
1420 while (c && (c != '\n' || in_comment || in_string))
1421 {
1422 if (c == '\\')
1423 GET (c);
1424 else if (c == '/' && !in_comment)
1425 {
1426 if (GET (c) == '*')
1427 in_comment = 1;
1428 }
1429 else if (c == '*' && in_comment)
1430 {
1431 if (GET (c) == '/')
1432 in_comment = 0;
1433 }
1434 else if (c == '"')
1435 in_string = !in_string;
1436
1437 if (c == '\n')
1438 INCREMENT_LINENO;
1439
1440 GET (c);
1441 }
1442
1443 return c;
1444 }
1445
1446
1447 /* Value is the next token from the input buffer. */
1448
1449 static int
1450 yylex (void)
1451 {
1452 int c;
1453 char end_char;
1454 char *p;
1455
1456 for (;;)
1457 {
1458 while (WHITEP (GET (c)))
1459 ;
1460
1461 switch (c)
1462 {
1463 case '\n':
1464 INCREMENT_LINENO;
1465 break;
1466
1467 case '\r':
1468 break;
1469
1470 case 0:
1471 /* End of file. */
1472 return YYEOF;
1473
1474 case '\\':
1475 GET (c);
1476 break;
1477
1478 case '"':
1479 case '\'':
1480 /* String and character constants. */
1481 end_char = c;
1482 string_start = in;
1483 while (GET (c) && c != end_char)
1484 {
1485 switch (c)
1486 {
1487 case '\\':
1488 /* Escape sequences. */
1489 if (!GET (c))
1490 {
1491 if (end_char == '\'')
1492 yyerror ("EOF in character constant", NULL);
1493 else
1494 yyerror ("EOF in string constant", NULL);
1495 goto end_string;
1496 }
1497 else switch (c)
1498 {
1499 case '\n':
1500 INCREMENT_LINENO;
1501 case 'a':
1502 case 'b':
1503 case 'f':
1504 case 'n':
1505 case 'r':
1506 case 't':
1507 case 'v':
1508 break;
1509
1510 case 'x':
1511 {
1512 /* Hexadecimal escape sequence. */
1513 int i;
1514 for (i = 0; i < 2; ++i)
1515 {
1516 GET (c);
1517
1518 if (c >= '0' && c <= '7')
1519 ;
1520 else if (c >= 'a' && c <= 'f')
1521 ;
1522 else if (c >= 'A' && c <= 'F')
1523 ;
1524 else
1525 {
1526 UNGET ();
1527 break;
1528 }
1529 }
1530 }
1531 break;
1532
1533 case '0':
1534 {
1535 /* Octal escape sequence. */
1536 int i;
1537 for (i = 0; i < 3; ++i)
1538 {
1539 GET (c);
1540
1541 if (c >= '0' && c <= '7')
1542 ;
1543 else
1544 {
1545 UNGET ();
1546 break;
1547 }
1548 }
1549 }
1550 break;
1551
1552 default:
1553 break;
1554 }
1555 break;
1556
1557 case '\n':
1558 if (end_char == '\'')
1559 yyerror ("newline in character constant", NULL);
1560 else
1561 yyerror ("newline in string constant", NULL);
1562 INCREMENT_LINENO;
1563 break;
1564
1565 default:
1566 break;
1567 }
1568 }
1569
1570 end_string:
1571 return end_char == '\'' ? CCHAR : CSTRING;
1572
1573 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
1574 case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
1575 case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
1576 case 'v': case 'w': case 'x': case 'y': case 'z':
1577 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
1578 case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
1579 case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
1580 case 'V': case 'W': case 'X': case 'Y': case 'Z': case '_':
1581 {
1582 /* Identifier and keywords. */
1583 unsigned hash;
1584 struct kw *k;
1585
1586 p = yytext;
1587 *p++ = hash = c;
1588
1589 while (IDENTP (GET (*p)))
1590 {
1591 hash = (hash << 1) ^ *p++;
1592 if (p == yytext_end - 1)
1593 {
1594 int size = yytext_end - yytext;
1595 yytext = (char *) xrealloc (yytext, 2 * size);
1596 yytext_end = yytext + 2 * size;
1597 p = yytext + size - 1;
1598 }
1599 }
1600
1601 UNGET ();
1602 *p = 0;
1603
1604 for (k = keyword_table[hash % KEYWORD_TABLE_SIZE]; k; k = k->next)
1605 if (streq (k->name, yytext))
1606 return k->tk;
1607
1608 return IDENT;
1609 }
1610
1611 case '/':
1612 /* C and C++ comments, '/' and '/='. */
1613 switch (GET (c))
1614 {
1615 case '*':
1616 while (GET (c))
1617 {
1618 switch (c)
1619 {
1620 case '*':
1621 if (GET (c) == '/')
1622 goto comment_end;
1623 UNGET ();
1624 break;
1625 case '\\':
1626 GET (c);
1627 break;
1628 case '\n':
1629 INCREMENT_LINENO;
1630 break;
1631 }
1632 }
1633 comment_end:;
1634 break;
1635
1636 case '=':
1637 return DIVASGN;
1638
1639 case '/':
1640 while (GET (c) && c != '\n')
1641 ;
1642 /* Don't try to read past the end of the input buffer if
1643 the file ends in a C++ comment without a newline. */
1644 if (c == 0)
1645 return YYEOF;
1646
1647 INCREMENT_LINENO;
1648 break;
1649
1650 default:
1651 UNGET ();
1652 return '/';
1653 }
1654 break;
1655
1656 case '+':
1657 if (GET (c) == '+')
1658 return INC;
1659 else if (c == '=')
1660 return ADDASGN;
1661 UNGET ();
1662 return '+';
1663
1664 case '-':
1665 switch (GET (c))
1666 {
1667 case '-':
1668 return DEC;
1669 case '>':
1670 if (GET (c) == '*')
1671 return ARROWSTAR;
1672 UNGET ();
1673 return ARROW;
1674 case '=':
1675 return SUBASGN;
1676 }
1677 UNGET ();
1678 return '-';
1679
1680 case '*':
1681 if (GET (c) == '=')
1682 return MULASGN;
1683 UNGET ();
1684 return '*';
1685
1686 case '%':
1687 if (GET (c) == '=')
1688 return MODASGN;
1689 UNGET ();
1690 return '%';
1691
1692 case '|':
1693 if (GET (c) == '|')
1694 return LOR;
1695 else if (c == '=')
1696 return ORASGN;
1697 UNGET ();
1698 return '|';
1699
1700 case '&':
1701 if (GET (c) == '&')
1702 return LAND;
1703 else if (c == '=')
1704 return ANDASGN;
1705 UNGET ();
1706 return '&';
1707
1708 case '^':
1709 if (GET (c) == '=')
1710 return XORASGN;
1711 UNGET ();
1712 return '^';
1713
1714 case '.':
1715 if (GET (c) == '*')
1716 return POINTSTAR;
1717 else if (c == '.')
1718 {
1719 if (GET (c) != '.')
1720 yyerror ("invalid token '..' ('...' assumed)", NULL);
1721 UNGET ();
1722 return ELLIPSIS;
1723 }
1724 else if (!DIGITP (c))
1725 {
1726 UNGET ();
1727 return '.';
1728 }
1729 goto mantissa;
1730
1731 case ':':
1732 if (GET (c) == ':')
1733 return DCOLON;
1734 UNGET ();
1735 return ':';
1736
1737 case '=':
1738 if (GET (c) == '=')
1739 return EQ;
1740 UNGET ();
1741 return '=';
1742
1743 case '!':
1744 if (GET (c) == '=')
1745 return NE;
1746 UNGET ();
1747 return '!';
1748
1749 case '<':
1750 switch (GET (c))
1751 {
1752 case '=':
1753 return LE;
1754 case '<':
1755 if (GET (c) == '=')
1756 return LSHIFTASGN;
1757 UNGET ();
1758 return LSHIFT;
1759 }
1760 UNGET ();
1761 return '<';
1762
1763 case '>':
1764 switch (GET (c))
1765 {
1766 case '=':
1767 return GE;
1768 case '>':
1769 if (GET (c) == '=')
1770 return RSHIFTASGN;
1771 UNGET ();
1772 return RSHIFT;
1773 }
1774 UNGET ();
1775 return '>';
1776
1777 case '#':
1778 c = process_pp_line ();
1779 if (c == 0)
1780 return YYEOF;
1781 break;
1782
1783 case '(': case ')': case '[': case ']': case '{': case '}':
1784 case ';': case ',': case '?': case '~':
1785 return c;
1786
1787 case '0':
1788 yyival = 0;
1789
1790 if (GET (c) == 'x' || c == 'X')
1791 {
1792 while (GET (c))
1793 {
1794 if (DIGITP (c))
1795 yyival = yyival * 16 + c - '0';
1796 else if (c >= 'a' && c <= 'f')
1797 yyival = yyival * 16 + c - 'a' + 10;
1798 else if (c >= 'A' && c <= 'F')
1799 yyival = yyival * 16 + c - 'A' + 10;
1800 else
1801 break;
1802 }
1803
1804 goto int_suffixes;
1805 }
1806 else if (c == '.')
1807 goto mantissa;
1808
1809 while (c >= '0' && c <= '7')
1810 {
1811 yyival = (yyival << 3) + c - '0';
1812 GET (c);
1813 }
1814
1815 int_suffixes:
1816 /* Integer suffixes. */
1817 while (isalpha (c))
1818 GET (c);
1819 UNGET ();
1820 return CINT;
1821
1822 case '1': case '2': case '3': case '4': case '5': case '6':
1823 case '7': case '8': case '9':
1824 /* Integer or floating constant, part before '.'. */
1825 yyival = c - '0';
1826
1827 while (GET (c) && DIGITP (c))
1828 yyival = 10 * yyival + c - '0';
1829
1830 if (c != '.')
1831 goto int_suffixes;
1832
1833 mantissa:
1834 /* Digits following '.'. */
1835 while (DIGITP (c))
1836 GET (c);
1837
1838 /* Optional exponent. */
1839 if (c == 'E' || c == 'e')
1840 {
1841 if (GET (c) == '-' || c == '+')
1842 GET (c);
1843
1844 while (DIGITP (c))
1845 GET (c);
1846 }
1847
1848 /* Optional type suffixes. */
1849 while (isalpha (c))
1850 GET (c);
1851 UNGET ();
1852 return CFLOAT;
1853
1854 default:
1855 break;
1856 }
1857 }
1858 }
1859
1860
1861 /* Actually local to matching_regexp. These variables must be in
1862 global scope for the case that `static' get's defined away. */
1863
1864 static char *matching_regexp_buffer, *matching_regexp_end_buf;
1865
1866
1867 /* Value is the string from the start of the line to the current
1868 position in the input buffer, or maybe a bit more if that string is
1869 shorter than min_regexp. */
1870
1871 static char *
1872 matching_regexp (void)
1873 {
1874 char *p;
1875 char *s;
1876 char *t;
1877
1878 if (!f_regexps)
1879 return NULL;
1880
1881 if (matching_regexp_buffer == NULL)
1882 {
1883 matching_regexp_buffer = (char *) xmalloc (max_regexp);
1884 matching_regexp_end_buf = &matching_regexp_buffer[max_regexp] - 1;
1885 }
1886
1887 /* Scan back to previous newline of buffer start. */
1888 for (p = in - 1; p > inbuffer && *p != '\n'; --p)
1889 ;
1890
1891 if (*p == '\n')
1892 {
1893 while (in - p < min_regexp && p > inbuffer)
1894 {
1895 /* Line probably not significant enough */
1896 for (--p; p > inbuffer && *p != '\n'; --p)
1897 ;
1898 }
1899 if (*p == '\n')
1900 ++p;
1901 }
1902
1903 /* Copy from end to make sure significant portions are included.
1904 This implies that in the browser a regular expressing of the form
1905 `^.*{regexp}' has to be used. */
1906 for (s = matching_regexp_end_buf - 1, t = in;
1907 s > matching_regexp_buffer && t > p;)
1908 {
1909 *--s = *--t;
1910
1911 if (*s == '"' || *s == '\\')
1912 *--s = '\\';
1913 }
1914
1915 *(matching_regexp_end_buf - 1) = '\0';
1916 return xstrdup (s);
1917 }
1918
1919
1920 /* Return a printable representation of token T. */
1921
1922 static const char *
1923 token_string (int t)
1924 {
1925 static char b[3];
1926
1927 switch (t)
1928 {
1929 case CSTRING: return "string constant";
1930 case CCHAR: return "char constant";
1931 case CINT: return "int constant";
1932 case CFLOAT: return "floating constant";
1933 case ELLIPSIS: return "...";
1934 case LSHIFTASGN: return "<<=";
1935 case RSHIFTASGN: return ">>=";
1936 case ARROWSTAR: return "->*";
1937 case IDENT: return "identifier";
1938 case DIVASGN: return "/=";
1939 case INC: return "++";
1940 case ADDASGN: return "+=";
1941 case DEC: return "--";
1942 case ARROW: return "->";
1943 case SUBASGN: return "-=";
1944 case MULASGN: return "*=";
1945 case MODASGN: return "%=";
1946 case LOR: return "||";
1947 case ORASGN: return "|=";
1948 case LAND: return "&&";
1949 case ANDASGN: return "&=";
1950 case XORASGN: return "^=";
1951 case POINTSTAR: return ".*";
1952 case DCOLON: return "::";
1953 case EQ: return "==";
1954 case NE: return "!=";
1955 case LE: return "<=";
1956 case LSHIFT: return "<<";
1957 case GE: return ">=";
1958 case RSHIFT: return ">>";
1959 case ASM: return "asm";
1960 case AUTO: return "auto";
1961 case BREAK: return "break";
1962 case CASE: return "case";
1963 case CATCH: return "catch";
1964 case CHAR: return "char";
1965 case CLASS: return "class";
1966 case CONST: return "const";
1967 case CONTINUE: return "continue";
1968 case DEFAULT: return "default";
1969 case DELETE: return "delete";
1970 case DO: return "do";
1971 case DOUBLE: return "double";
1972 case ELSE: return "else";
1973 case ENUM: return "enum";
1974 case EXTERN: return "extern";
1975 case FLOAT: return "float";
1976 case FOR: return "for";
1977 case FRIEND: return "friend";
1978 case GOTO: return "goto";
1979 case IF: return "if";
1980 case T_INLINE: return "inline";
1981 case INT: return "int";
1982 case LONG: return "long";
1983 case NEW: return "new";
1984 case OPERATOR: return "operator";
1985 case PRIVATE: return "private";
1986 case PROTECTED: return "protected";
1987 case PUBLIC: return "public";
1988 case REGISTER: return "register";
1989 case RETURN: return "return";
1990 case SHORT: return "short";
1991 case SIGNED: return "signed";
1992 case SIZEOF: return "sizeof";
1993 case STATIC: return "static";
1994 case STRUCT: return "struct";
1995 case SWITCH: return "switch";
1996 case TEMPLATE: return "template";
1997 case THIS: return "this";
1998 case THROW: return "throw";
1999 case TRY: return "try";
2000 case TYPEDEF: return "typedef";
2001 case UNION: return "union";
2002 case UNSIGNED: return "unsigned";
2003 case VIRTUAL: return "virtual";
2004 case VOID: return "void";
2005 case VOLATILE: return "volatile";
2006 case WHILE: return "while";
2007 case MUTABLE: return "mutable";
2008 case BOOL: return "bool";
2009 case TRUE: return "true";
2010 case FALSE: return "false";
2011 case SIGNATURE: return "signature";
2012 case NAMESPACE: return "namespace";
2013 case EXPLICIT: return "explicit";
2014 case TYPENAME: return "typename";
2015 case CONST_CAST: return "const_cast";
2016 case DYNAMIC_CAST: return "dynamic_cast";
2017 case REINTERPRET_CAST: return "reinterpret_cast";
2018 case STATIC_CAST: return "static_cast";
2019 case TYPEID: return "typeid";
2020 case USING: return "using";
2021 case WCHAR: return "wchar_t";
2022 case YYEOF: return "EOF";
2023
2024 default:
2025 if (t < 255)
2026 {
2027 b[0] = t;
2028 b[1] = '\0';
2029 return b;
2030 }
2031 else
2032 return "???";
2033 }
2034 }
2035
2036
2037 /* Reinitialize the scanner for a new input file. */
2038
2039 static void
2040 re_init_scanner (void)
2041 {
2042 in = inbuffer;
2043 yyline = 1;
2044
2045 if (yytext == NULL)
2046 {
2047 int size = 256;
2048 yytext = (char *) xmalloc (size * sizeof *yytext);
2049 yytext_end = yytext + size;
2050 }
2051 }
2052
2053
2054 /* Insert a keyword NAME with token value TKV into the keyword hash
2055 table. */
2056
2057 static void
2058 insert_keyword (const char *name, int tkv)
2059 {
2060 const char *s;
2061 unsigned h = 0;
2062 struct kw *k = (struct kw *) xmalloc (sizeof *k);
2063
2064 for (s = name; *s; ++s)
2065 h = (h << 1) ^ *s;
2066
2067 h %= KEYWORD_TABLE_SIZE;
2068 k->name = name;
2069 k->tk = tkv;
2070 k->next = keyword_table[h];
2071 keyword_table[h] = k;
2072 }
2073
2074
2075 /* Initialize the scanner for the first file. This sets up the
2076 character class vectors and fills the keyword hash table. */
2077
2078 static void
2079 init_scanner (void)
2080 {
2081 int i;
2082
2083 /* Allocate the input buffer */
2084 inbuffer_size = READ_CHUNK_SIZE + 1;
2085 inbuffer = in = (char *) xmalloc (inbuffer_size);
2086 yyline = 1;
2087
2088 /* Set up character class vectors. */
2089 for (i = 0; i < sizeof is_ident; ++i)
2090 {
2091 if (i == '_' || isalnum (i))
2092 is_ident[i] = 1;
2093
2094 if (i >= '0' && i <= '9')
2095 is_digit[i] = 1;
2096
2097 if (i == ' ' || i == '\t' || i == '\f' || i == '\v')
2098 is_white[i] = 1;
2099 }
2100
2101 /* Fill keyword hash table. */
2102 insert_keyword ("and", LAND);
2103 insert_keyword ("and_eq", ANDASGN);
2104 insert_keyword ("asm", ASM);
2105 insert_keyword ("auto", AUTO);
2106 insert_keyword ("bitand", '&');
2107 insert_keyword ("bitor", '|');
2108 insert_keyword ("bool", BOOL);
2109 insert_keyword ("break", BREAK);
2110 insert_keyword ("case", CASE);
2111 insert_keyword ("catch", CATCH);
2112 insert_keyword ("char", CHAR);
2113 insert_keyword ("class", CLASS);
2114 insert_keyword ("compl", '~');
2115 insert_keyword ("const", CONST);
2116 insert_keyword ("const_cast", CONST_CAST);
2117 insert_keyword ("continue", CONTINUE);
2118 insert_keyword ("default", DEFAULT);
2119 insert_keyword ("delete", DELETE);
2120 insert_keyword ("do", DO);
2121 insert_keyword ("double", DOUBLE);
2122 insert_keyword ("dynamic_cast", DYNAMIC_CAST);
2123 insert_keyword ("else", ELSE);
2124 insert_keyword ("enum", ENUM);
2125 insert_keyword ("explicit", EXPLICIT);
2126 insert_keyword ("extern", EXTERN);
2127 insert_keyword ("false", FALSE);
2128 insert_keyword ("float", FLOAT);
2129 insert_keyword ("for", FOR);
2130 insert_keyword ("friend", FRIEND);
2131 insert_keyword ("goto", GOTO);
2132 insert_keyword ("if", IF);
2133 insert_keyword ("inline", T_INLINE);
2134 insert_keyword ("int", INT);
2135 insert_keyword ("long", LONG);
2136 insert_keyword ("mutable", MUTABLE);
2137 insert_keyword ("namespace", NAMESPACE);
2138 insert_keyword ("new", NEW);
2139 insert_keyword ("not", '!');
2140 insert_keyword ("not_eq", NE);
2141 insert_keyword ("operator", OPERATOR);
2142 insert_keyword ("or", LOR);
2143 insert_keyword ("or_eq", ORASGN);
2144 insert_keyword ("private", PRIVATE);
2145 insert_keyword ("protected", PROTECTED);
2146 insert_keyword ("public", PUBLIC);
2147 insert_keyword ("register", REGISTER);
2148 insert_keyword ("reinterpret_cast", REINTERPRET_CAST);
2149 insert_keyword ("return", RETURN);
2150 insert_keyword ("short", SHORT);
2151 insert_keyword ("signed", SIGNED);
2152 insert_keyword ("sizeof", SIZEOF);
2153 insert_keyword ("static", STATIC);
2154 insert_keyword ("static_cast", STATIC_CAST);
2155 insert_keyword ("struct", STRUCT);
2156 insert_keyword ("switch", SWITCH);
2157 insert_keyword ("template", TEMPLATE);
2158 insert_keyword ("this", THIS);
2159 insert_keyword ("throw", THROW);
2160 insert_keyword ("true", TRUE);
2161 insert_keyword ("try", TRY);
2162 insert_keyword ("typedef", TYPEDEF);
2163 insert_keyword ("typeid", TYPEID);
2164 insert_keyword ("typename", TYPENAME);
2165 insert_keyword ("union", UNION);
2166 insert_keyword ("unsigned", UNSIGNED);
2167 insert_keyword ("using", USING);
2168 insert_keyword ("virtual", VIRTUAL);
2169 insert_keyword ("void", VOID);
2170 insert_keyword ("volatile", VOLATILE);
2171 insert_keyword ("wchar_t", WCHAR);
2172 insert_keyword ("while", WHILE);
2173 insert_keyword ("xor", '^');
2174 insert_keyword ("xor_eq", XORASGN);
2175 }
2176
2177
2178 \f
2179 /***********************************************************************
2180 Parser
2181 ***********************************************************************/
2182
2183 /* Match the current lookahead token and set it to the next token. */
2184
2185 #define MATCH() (tk = yylex ())
2186
2187 /* Return the lookahead token. If current lookahead token is cleared,
2188 read a new token. */
2189
2190 #define LA1 (tk == -1 ? (tk = yylex ()) : tk)
2191
2192 /* Is the current lookahead equal to the token T? */
2193
2194 #define LOOKING_AT(T) (tk == (T))
2195
2196 /* Is the current lookahead one of T1 or T2? */
2197
2198 #define LOOKING_AT2(T1, T2) (tk == (T1) || tk == (T2))
2199
2200 /* Is the current lookahead one of T1, T2 or T3? */
2201
2202 #define LOOKING_AT3(T1, T2, T3) (tk == (T1) || tk == (T2) || tk == (T3))
2203
2204 /* Is the current lookahead one of T1...T4? */
2205
2206 #define LOOKING_AT4(T1, T2, T3, T4) \
2207 (tk == (T1) || tk == (T2) || tk == (T3) || tk == (T4))
2208
2209 /* Match token T if current lookahead is T. */
2210
2211 #define MATCH_IF(T) if (LOOKING_AT (T)) MATCH (); else ((void) 0)
2212
2213 /* Skip to matching token if current token is T. */
2214
2215 #define SKIP_MATCHING_IF(T) \
2216 if (LOOKING_AT (T)) skip_matching (); else ((void) 0)
2217
2218
2219 /* Skip forward until a given token TOKEN or YYEOF is seen and return
2220 the current lookahead token after skipping. */
2221
2222 static int
2223 skip_to (int token)
2224 {
2225 while (!LOOKING_AT2 (YYEOF, token))
2226 MATCH ();
2227 return tk;
2228 }
2229
2230 /* Skip over pairs of tokens (parentheses, square brackets,
2231 angle brackets, curly brackets) matching the current lookahead. */
2232
2233 static void
2234 skip_matching (void)
2235 {
2236 int open, close, n;
2237
2238 switch (open = LA1)
2239 {
2240 case '{':
2241 close = '}';
2242 break;
2243
2244 case '(':
2245 close = ')';
2246 break;
2247
2248 case '<':
2249 close = '>';
2250 break;
2251
2252 case '[':
2253 close = ']';
2254 break;
2255
2256 default:
2257 abort ();
2258 }
2259
2260 for (n = 0;;)
2261 {
2262 if (LOOKING_AT (open))
2263 ++n;
2264 else if (LOOKING_AT (close))
2265 --n;
2266 else if (LOOKING_AT (YYEOF))
2267 break;
2268
2269 MATCH ();
2270
2271 if (n == 0)
2272 break;
2273 }
2274 }
2275
2276 static void
2277 skip_initializer (void)
2278 {
2279 for (;;)
2280 {
2281 switch (LA1)
2282 {
2283 case ';':
2284 case ',':
2285 case YYEOF:
2286 return;
2287
2288 case '{':
2289 case '[':
2290 case '(':
2291 skip_matching ();
2292 break;
2293
2294 default:
2295 MATCH ();
2296 break;
2297 }
2298 }
2299 }
2300
2301 /* Build qualified namespace alias (A::B::c) and return it. */
2302
2303 static struct link *
2304 match_qualified_namespace_alias (void)
2305 {
2306 struct link *head = NULL;
2307 struct link *cur = NULL;
2308 struct link *tmp = NULL;
2309
2310 for (;;)
2311 {
2312 MATCH ();
2313 switch (LA1)
2314 {
2315 case IDENT:
2316 tmp = (struct link *) xmalloc (sizeof *cur);
2317 tmp->sym = find_namespace (yytext, cur ? cur->sym : NULL);
2318 tmp->next = NULL;
2319 if (head)
2320 {
2321 cur = cur->next = tmp;
2322 }
2323 else
2324 {
2325 head = cur = tmp;
2326 }
2327 break;
2328 case DCOLON:
2329 /* Just skip */
2330 break;
2331 default:
2332 return head;
2333 break;
2334 }
2335 }
2336 }
2337
2338 /* Re-initialize the parser by resetting the lookahead token. */
2339
2340 static void
2341 re_init_parser (void)
2342 {
2343 tk = -1;
2344 }
2345
2346
2347 /* Parse a parameter list, including the const-specifier,
2348 pure-specifier, and throw-list that may follow a parameter list.
2349 Return in FLAGS what was seen following the parameter list.
2350 Returns a hash code for the parameter types. This value is used to
2351 distinguish between overloaded functions. */
2352
2353 static unsigned
2354 parm_list (int *flags)
2355 {
2356 unsigned hash = 0;
2357 int type_seen = 0;
2358
2359 while (!LOOKING_AT2 (YYEOF, ')'))
2360 {
2361 switch (LA1)
2362 {
2363 /* Skip over grouping parens or parameter lists in parameter
2364 declarations. */
2365 case '(':
2366 skip_matching ();
2367 break;
2368
2369 /* Next parameter. */
2370 case ',':
2371 MATCH ();
2372 type_seen = 0;
2373 break;
2374
2375 /* Ignore the scope part of types, if any. This is because
2376 some types need scopes when defined outside of a class body,
2377 and don't need them inside the class body. This means that
2378 we have to look for the last IDENT in a sequence of
2379 IDENT::IDENT::... */
2380 case IDENT:
2381 if (!type_seen)
2382 {
2383 char *last_id;
2384 unsigned ident_type_hash = 0;
2385
2386 parse_qualified_param_ident_or_type (&last_id);
2387 if (last_id)
2388 {
2389 /* LAST_ID null means something like `X::*'. */
2390 for (; *last_id; ++last_id)
2391 ident_type_hash = (ident_type_hash << 1) ^ *last_id;
2392 hash = (hash << 1) ^ ident_type_hash;
2393 type_seen = 1;
2394 }
2395 }
2396 else
2397 MATCH ();
2398 break;
2399
2400 case VOID:
2401 /* This distinction is made to make `func (void)' equivalent
2402 to `func ()'. */
2403 type_seen = 1;
2404 MATCH ();
2405 if (!LOOKING_AT (')'))
2406 hash = (hash << 1) ^ VOID;
2407 break;
2408
2409 case BOOL: case CHAR: case CLASS: case CONST:
2410 case DOUBLE: case ENUM: case FLOAT: case INT:
2411 case LONG: case SHORT: case SIGNED: case STRUCT:
2412 case UNION: case UNSIGNED: case VOLATILE: case WCHAR:
2413 case ELLIPSIS:
2414 type_seen = 1;
2415 hash = (hash << 1) ^ LA1;
2416 MATCH ();
2417 break;
2418
2419 case '*': case '&': case '[': case ']':
2420 hash = (hash << 1) ^ LA1;
2421 MATCH ();
2422 break;
2423
2424 default:
2425 MATCH ();
2426 break;
2427 }
2428 }
2429
2430 if (LOOKING_AT (')'))
2431 {
2432 MATCH ();
2433
2434 if (LOOKING_AT (CONST))
2435 {
2436 /* We can overload the same function on `const' */
2437 hash = (hash << 1) ^ CONST;
2438 SET_FLAG (*flags, F_CONST);
2439 MATCH ();
2440 }
2441
2442 if (LOOKING_AT (THROW))
2443 {
2444 MATCH ();
2445 SKIP_MATCHING_IF ('(');
2446 SET_FLAG (*flags, F_THROW);
2447 }
2448
2449 if (LOOKING_AT ('='))
2450 {
2451 MATCH ();
2452 if (LOOKING_AT (CINT) && yyival == 0)
2453 {
2454 MATCH ();
2455 SET_FLAG (*flags, F_PURE);
2456 }
2457 }
2458 }
2459
2460 return hash;
2461 }
2462
2463
2464 /* Print position info to stdout. */
2465
2466 static void
2467 print_info (void)
2468 {
2469 if (info_position >= 0 && BUFFER_POS () <= info_position)
2470 if (info_cls)
2471 printf ("(\"%s\" \"%s\" \"%s\" %d)\n",
2472 info_cls->name, sym_scope (info_cls),
2473 info_member->name, info_where);
2474 }
2475
2476
2477 /* Parse a member declaration within the class body of CLS. VIS is
2478 the access specifier for the member (private, protected,
2479 public). */
2480
2481 static void
2482 member (struct sym *cls, int vis)
2483 {
2484 char *id = NULL;
2485 int sc = SC_MEMBER;
2486 char *regexp = NULL;
2487 int pos;
2488 int is_constructor;
2489 int anonymous = 0;
2490 int flags = 0;
2491 int class_tag;
2492 int type_seen = 0;
2493 int paren_seen = 0;
2494 unsigned hash = 0;
2495 int tilde = 0;
2496
2497 while (!LOOKING_AT4 (';', '{', '}', YYEOF))
2498 {
2499 switch (LA1)
2500 {
2501 default:
2502 MATCH ();
2503 break;
2504
2505 /* A function or class may follow. */
2506 case TEMPLATE:
2507 MATCH ();
2508 SET_FLAG (flags, F_TEMPLATE);
2509 /* Skip over template argument list */
2510 SKIP_MATCHING_IF ('<');
2511 break;
2512
2513 case EXPLICIT:
2514 SET_FLAG (flags, F_EXPLICIT);
2515 goto typeseen;
2516
2517 case MUTABLE:
2518 SET_FLAG (flags, F_MUTABLE);
2519 goto typeseen;
2520
2521 case T_INLINE:
2522 SET_FLAG (flags, F_INLINE);
2523 goto typeseen;
2524
2525 case VIRTUAL:
2526 SET_FLAG (flags, F_VIRTUAL);
2527 goto typeseen;
2528
2529 case '[':
2530 skip_matching ();
2531 break;
2532
2533 case ENUM:
2534 sc = SC_TYPE;
2535 goto typeseen;
2536
2537 case TYPEDEF:
2538 sc = SC_TYPE;
2539 goto typeseen;
2540
2541 case FRIEND:
2542 sc = SC_FRIEND;
2543 goto typeseen;
2544
2545 case STATIC:
2546 sc = SC_STATIC;
2547 goto typeseen;
2548
2549 case '~':
2550 tilde = 1;
2551 MATCH ();
2552 break;
2553
2554 case IDENT:
2555 /* Remember IDENTS seen so far. Among these will be the member
2556 name. */
2557 id = (char *) xrealloc (id, strlen (yytext) + 2);
2558 if (tilde)
2559 {
2560 *id = '~';
2561 strcpy (id + 1, yytext);
2562 }
2563 else
2564 strcpy (id, yytext);
2565 MATCH ();
2566 break;
2567
2568 case OPERATOR:
2569 {
2570 char *s = operator_name (&sc);
2571 id = (char *) xrealloc (id, strlen (s) + 1);
2572 strcpy (id, s);
2573 }
2574 break;
2575
2576 case '(':
2577 /* Most probably the beginning of a parameter list. */
2578 MATCH ();
2579 paren_seen = 1;
2580
2581 if (id && cls)
2582 {
2583 if (!(is_constructor = streq (id, cls->name)))
2584 regexp = matching_regexp ();
2585 }
2586 else
2587 is_constructor = 0;
2588
2589 pos = BUFFER_POS ();
2590 hash = parm_list (&flags);
2591
2592 if (is_constructor)
2593 regexp = matching_regexp ();
2594
2595 if (id && cls != NULL)
2596 add_member_decl (cls, id, regexp, pos, hash, 0, sc, vis, flags);
2597
2598 while (!LOOKING_AT3 (';', '{', YYEOF))
2599 MATCH ();
2600
2601 if (LOOKING_AT ('{') && id && cls)
2602 add_member_defn (cls, id, regexp, pos, hash, 0, sc, flags);
2603
2604 free (id);
2605 id = NULL;
2606 sc = SC_MEMBER;
2607 break;
2608
2609 case STRUCT: case UNION: case CLASS:
2610 /* Nested class */
2611 class_tag = LA1;
2612 type_seen = 1;
2613 MATCH ();
2614 anonymous = 1;
2615
2616 /* More than one ident here to allow for MS-DOS specialties
2617 like `_export class' etc. The last IDENT seen counts
2618 as the class name. */
2619 while (!LOOKING_AT4 (YYEOF, ';', ':', '{'))
2620 {
2621 if (LOOKING_AT (IDENT))
2622 anonymous = 0;
2623 MATCH ();
2624 }
2625
2626 if (LOOKING_AT2 (':', '{'))
2627 class_definition (anonymous ? NULL : cls, class_tag, flags, 1);
2628 else
2629 skip_to (';');
2630 break;
2631
2632 case INT: case CHAR: case LONG: case UNSIGNED:
2633 case SIGNED: case CONST: case DOUBLE: case VOID:
2634 case SHORT: case VOLATILE: case BOOL: case WCHAR:
2635 case TYPENAME:
2636 typeseen:
2637 type_seen = 1;
2638 MATCH ();
2639 break;
2640 }
2641 }
2642
2643 if (LOOKING_AT (';'))
2644 {
2645 /* The end of a member variable, a friend declaration or an access
2646 declaration. We don't want to add friend classes as members. */
2647 if (id && sc != SC_FRIEND && cls)
2648 {
2649 regexp = matching_regexp ();
2650 pos = BUFFER_POS ();
2651
2652 if (cls != NULL)
2653 {
2654 if (type_seen || !paren_seen)
2655 add_member_decl (cls, id, regexp, pos, 0, 1, sc, vis, 0);
2656 else
2657 add_member_decl (cls, id, regexp, pos, hash, 0, sc, vis, 0);
2658 }
2659 }
2660
2661 MATCH ();
2662 print_info ();
2663 }
2664 else if (LOOKING_AT ('{'))
2665 {
2666 /* A named enum. */
2667 if (sc == SC_TYPE && id && cls)
2668 {
2669 regexp = matching_regexp ();
2670 pos = BUFFER_POS ();
2671
2672 if (cls != NULL)
2673 {
2674 add_member_decl (cls, id, regexp, pos, 0, 1, sc, vis, 0);
2675 add_member_defn (cls, id, regexp, pos, 0, 1, sc, 0);
2676 }
2677 }
2678
2679 skip_matching ();
2680 print_info ();
2681 }
2682
2683 free (id);
2684 }
2685
2686
2687 /* Parse the body of class CLS. TAG is the tag of the class (struct,
2688 union, class). */
2689
2690 static void
2691 class_body (struct sym *cls, int tag)
2692 {
2693 int vis = tag == CLASS ? PRIVATE : PUBLIC;
2694 int temp;
2695
2696 while (!LOOKING_AT2 (YYEOF, '}'))
2697 {
2698 switch (LA1)
2699 {
2700 case PRIVATE: case PROTECTED: case PUBLIC:
2701 temp = LA1;
2702 MATCH ();
2703
2704 if (LOOKING_AT (':'))
2705 {
2706 vis = temp;
2707 MATCH ();
2708 }
2709 else
2710 {
2711 /* Probably conditional compilation for inheritance list.
2712 We don't known whether there comes more of this.
2713 This is only a crude fix that works most of the time. */
2714 do
2715 {
2716 MATCH ();
2717 }
2718 while (LOOKING_AT2 (IDENT, ',')
2719 || LOOKING_AT3 (PUBLIC, PROTECTED, PRIVATE));
2720 }
2721 break;
2722
2723 case TYPENAME:
2724 case USING:
2725 skip_to (';');
2726 break;
2727
2728 /* Try to synchronize */
2729 case CHAR: case CLASS: case CONST:
2730 case DOUBLE: case ENUM: case FLOAT: case INT:
2731 case LONG: case SHORT: case SIGNED: case STRUCT:
2732 case UNION: case UNSIGNED: case VOID: case VOLATILE:
2733 case TYPEDEF: case STATIC: case T_INLINE: case FRIEND:
2734 case VIRTUAL: case TEMPLATE: case IDENT: case '~':
2735 case BOOL: case WCHAR: case EXPLICIT: case MUTABLE:
2736 member (cls, vis);
2737 break;
2738
2739 default:
2740 MATCH ();
2741 break;
2742 }
2743 }
2744 }
2745
2746
2747 /* Parse a qualified identifier. Current lookahead is IDENT. A
2748 qualified ident has the form `X<..>::Y<...>::T<...>. Returns a
2749 symbol for that class. */
2750
2751 static struct sym *
2752 parse_classname (void)
2753 {
2754 struct sym *last_class = NULL;
2755
2756 while (LOOKING_AT (IDENT))
2757 {
2758 last_class = add_sym (yytext, last_class);
2759 MATCH ();
2760
2761 if (LOOKING_AT ('<'))
2762 {
2763 skip_matching ();
2764 SET_FLAG (last_class->flags, F_TEMPLATE);
2765 }
2766
2767 if (!LOOKING_AT (DCOLON))
2768 break;
2769
2770 MATCH ();
2771 }
2772
2773 return last_class;
2774 }
2775
2776
2777 /* Parse an operator name. Add the `static' flag to *SC if an
2778 implicitly static operator has been parsed. Value is a pointer to
2779 a static buffer holding the constructed operator name string. */
2780
2781 static char *
2782 operator_name (int *sc)
2783 {
2784 static size_t id_size = 0;
2785 static char *id = NULL;
2786 const char *s;
2787 size_t len;
2788
2789 MATCH ();
2790
2791 if (LOOKING_AT2 (NEW, DELETE))
2792 {
2793 /* `new' and `delete' are implicitly static. */
2794 if (*sc != SC_FRIEND)
2795 *sc = SC_STATIC;
2796
2797 s = token_string (LA1);
2798 MATCH ();
2799
2800 len = strlen (s) + 10;
2801 if (len > id_size)
2802 {
2803 size_t new_size = max (len, 2 * id_size);
2804 id = (char *) xrealloc (id, new_size);
2805 id_size = new_size;
2806 }
2807 strcpy (id, s);
2808
2809 /* Vector new or delete? */
2810 if (LOOKING_AT ('['))
2811 {
2812 strcat (id, "[");
2813 MATCH ();
2814
2815 if (LOOKING_AT (']'))
2816 {
2817 strcat (id, "]");
2818 MATCH ();
2819 }
2820 }
2821 }
2822 else
2823 {
2824 size_t tokens_matched = 0;
2825
2826 len = 20;
2827 if (len > id_size)
2828 {
2829 int new_size = max (len, 2 * id_size);
2830 id = (char *) xrealloc (id, new_size);
2831 id_size = new_size;
2832 }
2833 strcpy (id, "operator");
2834
2835 /* Beware access declarations of the form "X::f;" Beware of
2836 `operator () ()'. Yet another difficulty is found in
2837 GCC 2.95's STL: `operator == __STL_NULL_TMPL_ARGS (...'. */
2838 while (!(LOOKING_AT ('(') && tokens_matched)
2839 && !LOOKING_AT2 (';', YYEOF))
2840 {
2841 s = token_string (LA1);
2842 len += strlen (s) + 2;
2843 if (len > id_size)
2844 {
2845 size_t new_size = max (len, 2 * id_size);
2846 id = (char *) xrealloc (id, new_size);
2847 id_size = new_size;
2848 }
2849
2850 if (*s != ')' && *s != ']')
2851 strcat (id, " ");
2852 strcat (id, s);
2853 MATCH ();
2854
2855 /* If this is a simple operator like `+', stop now. */
2856 if (!isalpha ((unsigned char) *s) && *s != '(' && *s != '[')
2857 break;
2858
2859 ++tokens_matched;
2860 }
2861 }
2862
2863 return id;
2864 }
2865
2866
2867 /* This one consumes the last IDENT of a qualified member name like
2868 `X::Y::z'. This IDENT is returned in LAST_ID. Value is the
2869 symbol structure for the ident. */
2870
2871 static struct sym *
2872 parse_qualified_ident_or_type (char **last_id)
2873 {
2874 struct sym *cls = NULL;
2875 char *id = NULL;
2876 size_t id_size = 0;
2877 int enter = 0;
2878
2879 while (LOOKING_AT (IDENT))
2880 {
2881 int len = strlen (yytext) + 1;
2882 if (len > id_size)
2883 {
2884 id = (char *) xrealloc (id, len);
2885 id_size = len;
2886 }
2887 strcpy (id, yytext);
2888 *last_id = id;
2889 MATCH ();
2890
2891 SKIP_MATCHING_IF ('<');
2892
2893 if (LOOKING_AT (DCOLON))
2894 {
2895 struct sym *pcn = NULL;
2896 struct link *pna = check_namespace_alias (id);
2897 if (pna)
2898 {
2899 do
2900 {
2901 enter_namespace (pna->sym->name);
2902 enter++;
2903 pna = pna->next;
2904 }
2905 while (pna);
2906 }
2907 else if ((pcn = check_namespace (id, current_namespace)))
2908 {
2909 enter_namespace (pcn->name);
2910 enter++;
2911 }
2912 else
2913 cls = add_sym (id, cls);
2914
2915 *last_id = NULL;
2916 free (id);
2917 id = NULL;
2918 id_size = 0;
2919 MATCH ();
2920 }
2921 else
2922 break;
2923 }
2924
2925 while (enter--)
2926 leave_namespace ();
2927
2928 return cls;
2929 }
2930
2931
2932 /* This one consumes the last IDENT of a qualified member name like
2933 `X::Y::z'. This IDENT is returned in LAST_ID. Value is the
2934 symbol structure for the ident. */
2935
2936 static void
2937 parse_qualified_param_ident_or_type (char **last_id)
2938 {
2939 struct sym *cls = NULL;
2940 static char *id = NULL;
2941 static int id_size = 0;
2942
2943 assert (LOOKING_AT (IDENT));
2944
2945 do
2946 {
2947 int len = strlen (yytext) + 1;
2948 if (len > id_size)
2949 {
2950 id = (char *) xrealloc (id, len);
2951 id_size = len;
2952 }
2953 strcpy (id, yytext);
2954 *last_id = id;
2955 MATCH ();
2956
2957 SKIP_MATCHING_IF ('<');
2958
2959 if (LOOKING_AT (DCOLON))
2960 {
2961 cls = add_sym (id, cls);
2962 *last_id = NULL;
2963 MATCH ();
2964 }
2965 else
2966 break;
2967 }
2968 while (LOOKING_AT (IDENT));
2969 }
2970
2971
2972 /* Parse a class definition.
2973
2974 CONTAINING is the class containing the class being parsed or null.
2975 This may also be null if NESTED != 0 if the containing class is
2976 anonymous. TAG is the tag of the class (struct, union, class).
2977 NESTED is non-zero if we are parsing a nested class.
2978
2979 Current lookahead is the class name. */
2980
2981 static void
2982 class_definition (struct sym *containing, int tag, int flags, int nested)
2983 {
2984 struct sym *current;
2985 struct sym *base_class;
2986
2987 /* Set CURRENT to null if no entry has to be made for the class
2988 parsed. This is the case for certain command line flag
2989 settings. */
2990 if ((tag != CLASS && !f_structs) || (nested && !f_nested_classes))
2991 current = NULL;
2992 else
2993 {
2994 current = add_sym (yytext, containing);
2995 current->pos = BUFFER_POS ();
2996 current->regexp = matching_regexp ();
2997 current->filename = filename;
2998 current->flags = flags;
2999 }
3000
3001 /* If at ':', base class list follows. */
3002 if (LOOKING_AT (':'))
3003 {
3004 int done = 0;
3005 MATCH ();
3006
3007 while (!done)
3008 {
3009 switch (LA1)
3010 {
3011 case VIRTUAL: case PUBLIC: case PROTECTED: case PRIVATE:
3012 MATCH ();
3013 break;
3014
3015 case IDENT:
3016 base_class = parse_classname ();
3017 if (base_class && current && base_class != current)
3018 add_link (base_class, current);
3019 break;
3020
3021 /* The `,' between base classes or the end of the base
3022 class list. Add the previously found base class.
3023 It's done this way to skip over sequences of
3024 `A::B::C' until we reach the end.
3025
3026 FIXME: it is now possible to handle `class X : public B::X'
3027 because we have enough information. */
3028 case ',':
3029 MATCH ();
3030 break;
3031
3032 default:
3033 /* A syntax error, possibly due to preprocessor constructs
3034 like
3035
3036 #ifdef SOMETHING
3037 class A : public B
3038 #else
3039 class A : private B.
3040
3041 MATCH until we see something like `;' or `{'. */
3042 while (!LOOKING_AT3 (';', YYEOF, '{'))
3043 MATCH ();
3044 done = 1;
3045
3046 case '{':
3047 done = 1;
3048 break;
3049 }
3050 }
3051 }
3052
3053 /* Parse the class body if there is one. */
3054 if (LOOKING_AT ('{'))
3055 {
3056 if (tag != CLASS && !f_structs)
3057 skip_matching ();
3058 else
3059 {
3060 MATCH ();
3061 class_body (current, tag);
3062
3063 if (LOOKING_AT ('}'))
3064 {
3065 MATCH ();
3066 if (LOOKING_AT (';') && !nested)
3067 MATCH ();
3068 }
3069 }
3070 }
3071 }
3072
3073 /* Add to class *CLS information for the declaration of variable or
3074 type *ID. If *CLS is null, this means a global declaration. SC is
3075 the storage class of *ID. FLAGS is a bit set giving additional
3076 information about the member (see the F_* defines). */
3077
3078 static void
3079 add_declarator (struct sym **cls, char **id, int flags, int sc)
3080 {
3081 if (LOOKING_AT2 (';', ','))
3082 {
3083 /* The end of a member variable or of an access declaration
3084 `X::f'. To distinguish between them we have to know whether
3085 type information has been seen. */
3086 if (*id)
3087 {
3088 char *regexp = matching_regexp ();
3089 int pos = BUFFER_POS ();
3090
3091 if (*cls)
3092 add_member_defn (*cls, *id, regexp, pos, 0, 1, SC_UNKNOWN, flags);
3093 else
3094 add_global_defn (*id, regexp, pos, 0, 1, sc, flags);
3095 }
3096
3097 MATCH ();
3098 print_info ();
3099 }
3100 else if (LOOKING_AT ('{'))
3101 {
3102 if (sc == SC_TYPE && *id)
3103 {
3104 /* A named enumeration. */
3105 char *regexp = matching_regexp ();
3106 int pos = BUFFER_POS ();
3107 add_global_defn (*id, regexp, pos, 0, 1, sc, flags);
3108 }
3109
3110 skip_matching ();
3111 print_info ();
3112 }
3113
3114 free (*id);
3115 *id = NULL;
3116 *cls = NULL;
3117 }
3118
3119 /* Parse a declaration. */
3120
3121 static void
3122 declaration (int flags)
3123 {
3124 char *id = NULL;
3125 struct sym *cls = NULL;
3126 char *regexp = NULL;
3127 int pos = 0;
3128 unsigned hash = 0;
3129 int is_constructor;
3130 int sc = 0;
3131
3132 while (!LOOKING_AT3 (';', '{', YYEOF))
3133 {
3134 switch (LA1)
3135 {
3136 default:
3137 MATCH ();
3138 break;
3139
3140 case '[':
3141 skip_matching ();
3142 break;
3143
3144 case ENUM:
3145 case TYPEDEF:
3146 sc = SC_TYPE;
3147 MATCH ();
3148 break;
3149
3150 case STATIC:
3151 sc = SC_STATIC;
3152 MATCH ();
3153 break;
3154
3155 case INT: case CHAR: case LONG: case UNSIGNED:
3156 case SIGNED: case CONST: case DOUBLE: case VOID:
3157 case SHORT: case VOLATILE: case BOOL: case WCHAR:
3158 MATCH ();
3159 break;
3160
3161 case CLASS: case STRUCT: case UNION:
3162 /* This is for the case `STARTWRAP class X : ...' or
3163 `declare (X, Y)\n class A : ...'. */
3164 if (id)
3165 {
3166 free (id);
3167 return;
3168 }
3169
3170 case '=':
3171 /* Assumed to be the start of an initialization in this
3172 context. */
3173 skip_initializer ();
3174 break;
3175
3176 case ',':
3177 add_declarator (&cls, &id, flags, sc);
3178 break;
3179
3180 case OPERATOR:
3181 {
3182 char *s = operator_name (&sc);
3183 id = (char *) xrealloc (id, strlen (s) + 1);
3184 strcpy (id, s);
3185 }
3186 break;
3187
3188 case T_INLINE:
3189 SET_FLAG (flags, F_INLINE);
3190 MATCH ();
3191 break;
3192
3193 case '~':
3194 MATCH ();
3195 if (LOOKING_AT (IDENT))
3196 {
3197 id = (char *) xrealloc (id, strlen (yytext) + 2);
3198 *id = '~';
3199 strcpy (id + 1, yytext);
3200 MATCH ();
3201 }
3202 break;
3203
3204 case IDENT:
3205 cls = parse_qualified_ident_or_type (&id);
3206 break;
3207
3208 case '(':
3209 /* Most probably the beginning of a parameter list. */
3210 if (cls)
3211 {
3212 MATCH ();
3213
3214 if (id && cls)
3215 {
3216 if (!(is_constructor = streq (id, cls->name)))
3217 regexp = matching_regexp ();
3218 }
3219 else
3220 is_constructor = 0;
3221
3222 pos = BUFFER_POS ();
3223 hash = parm_list (&flags);
3224
3225 if (is_constructor)
3226 regexp = matching_regexp ();
3227
3228 if (id && cls)
3229 add_member_defn (cls, id, regexp, pos, hash, 0,
3230 SC_UNKNOWN, flags);
3231 }
3232 else
3233 {
3234 /* This may be a C functions, but also a macro
3235 call of the form `declare (A, B)' --- such macros
3236 can be found in some class libraries. */
3237 MATCH ();
3238
3239 if (id)
3240 {
3241 regexp = matching_regexp ();
3242 pos = BUFFER_POS ();
3243 hash = parm_list (&flags);
3244 add_global_decl (id, regexp, pos, hash, 0, sc, flags);
3245 }
3246
3247 /* This is for the case that the function really is
3248 a macro with no `;' following it. If a CLASS directly
3249 follows, we would miss it otherwise. */
3250 if (LOOKING_AT3 (CLASS, STRUCT, UNION))
3251 return;
3252 }
3253
3254 while (!LOOKING_AT3 (';', '{', YYEOF))
3255 MATCH ();
3256
3257 if (!cls && id && LOOKING_AT ('{'))
3258 add_global_defn (id, regexp, pos, hash, 0, sc, flags);
3259
3260 free (id);
3261 id = NULL;
3262 break;
3263 }
3264 }
3265
3266 add_declarator (&cls, &id, flags, sc);
3267 }
3268
3269
3270 /* Parse a list of top-level declarations/definitions. START_FLAGS
3271 says in which context we are parsing. If it is F_EXTERNC, we are
3272 parsing in an `extern "C"' block. Value is 1 if EOF is reached, 0
3273 otherwise. */
3274
3275 static int
3276 globals (int start_flags)
3277 {
3278 int anonymous;
3279 int class_tk;
3280 int flags = start_flags;
3281
3282 for (;;)
3283 {
3284 char *prev_in = in;
3285
3286 switch (LA1)
3287 {
3288 case NAMESPACE:
3289 {
3290 MATCH ();
3291
3292 if (LOOKING_AT (IDENT))
3293 {
3294 char *namespace_name = xstrdup (yytext);
3295 MATCH ();
3296
3297 if (LOOKING_AT ('='))
3298 {
3299 struct link *qna = match_qualified_namespace_alias ();
3300 if (qna)
3301 register_namespace_alias (namespace_name, qna);
3302
3303 if (skip_to (';') == ';')
3304 MATCH ();
3305 }
3306 else if (LOOKING_AT ('{'))
3307 {
3308 MATCH ();
3309 enter_namespace (namespace_name);
3310 globals (0);
3311 leave_namespace ();
3312 MATCH_IF ('}');
3313 }
3314
3315 free (namespace_name);
3316 }
3317 }
3318 break;
3319
3320 case EXTERN:
3321 MATCH ();
3322 if (LOOKING_AT (CSTRING) && *string_start == 'C'
3323 && *(string_start + 1) == '"')
3324 {
3325 /* This is `extern "C"'. */
3326 MATCH ();
3327
3328 if (LOOKING_AT ('{'))
3329 {
3330 MATCH ();
3331 globals (F_EXTERNC);
3332 MATCH_IF ('}');
3333 }
3334 else
3335 SET_FLAG (flags, F_EXTERNC);
3336 }
3337 break;
3338
3339 case TEMPLATE:
3340 MATCH ();
3341 SKIP_MATCHING_IF ('<');
3342 SET_FLAG (flags, F_TEMPLATE);
3343 break;
3344
3345 case CLASS: case STRUCT: case UNION:
3346 class_tk = LA1;
3347 MATCH ();
3348 anonymous = 1;
3349
3350 /* More than one ident here to allow for MS-DOS and OS/2
3351 specialties like `far', `_Export' etc. Some C++ libs
3352 have constructs like `_OS_DLLIMPORT(_OS_CLIENT)' in front
3353 of the class name. */
3354 while (!LOOKING_AT4 (YYEOF, ';', ':', '{'))
3355 {
3356 if (LOOKING_AT (IDENT))
3357 anonymous = 0;
3358 MATCH ();
3359 }
3360
3361 /* Don't add anonymous unions. */
3362 if (LOOKING_AT2 (':', '{') && !anonymous)
3363 class_definition (NULL, class_tk, flags, 0);
3364 else
3365 {
3366 if (skip_to (';') == ';')
3367 MATCH ();
3368 }
3369
3370 flags = start_flags;
3371 break;
3372
3373 case YYEOF:
3374 return 1;
3375
3376 case '}':
3377 return 0;
3378
3379 default:
3380 declaration (flags);
3381 flags = start_flags;
3382 break;
3383 }
3384
3385 if (prev_in == in)
3386 yyerror ("parse error", NULL);
3387 }
3388 }
3389
3390
3391 /* Parse the current input file. */
3392
3393 static void
3394 yyparse (void)
3395 {
3396 while (globals (0) == 0)
3397 MATCH_IF ('}');
3398 }
3399
3400
3401 \f
3402 /***********************************************************************
3403 Main Program
3404 ***********************************************************************/
3405
3406 /* Add the list of paths PATH_LIST to the current search path for
3407 input files. */
3408
3409 static void
3410 add_search_path (char *path_list)
3411 {
3412 while (*path_list)
3413 {
3414 char *start = path_list;
3415 struct search_path *p;
3416
3417 while (*path_list && *path_list != SEPCHAR)
3418 ++path_list;
3419
3420 p = (struct search_path *) xmalloc (sizeof *p);
3421 p->path = (char *) xmalloc (path_list - start + 1);
3422 memcpy (p->path, start, path_list - start);
3423 p->path[path_list - start] = '\0';
3424 p->next = NULL;
3425
3426 if (search_path_tail)
3427 {
3428 search_path_tail->next = p;
3429 search_path_tail = p;
3430 }
3431 else
3432 search_path = search_path_tail = p;
3433
3434 while (*path_list == SEPCHAR)
3435 ++path_list;
3436 }
3437 }
3438
3439
3440 /* Open FILE and return a file handle for it, or -1 if FILE cannot be
3441 opened. Try to find FILE in search_path first, then try the
3442 unchanged file name. */
3443
3444 static FILE *
3445 open_file (char *file)
3446 {
3447 FILE *fp = NULL;
3448 static char *buffer;
3449 static int buffer_size;
3450 struct search_path *path;
3451 int flen = strlen (file) + 1; /* +1 for the slash */
3452
3453 filename = xstrdup (file);
3454
3455 for (path = search_path; path && fp == NULL; path = path->next)
3456 {
3457 int len = strlen (path->path) + flen;
3458
3459 if (len + 1 >= buffer_size)
3460 {
3461 buffer_size = max (len + 1, 2 * buffer_size);
3462 buffer = (char *) xrealloc (buffer, buffer_size);
3463 }
3464
3465 strcpy (buffer, path->path);
3466 strcat (buffer, "/");
3467 strcat (buffer, file);
3468 fp = fopen (buffer, "r");
3469 }
3470
3471 /* Try the original file name. */
3472 if (fp == NULL)
3473 fp = fopen (file, "r");
3474
3475 if (fp == NULL)
3476 yyerror ("cannot open", NULL);
3477
3478 return fp;
3479 }
3480
3481
3482 /* Display usage information and exit program. */
3483
3484 static char const *const usage_message[] =
3485 {
3486 "\
3487 Usage: ebrowse [options] {files}\n\
3488 \n\
3489 -a, --append append output to existing file\n\
3490 -f, --files=FILES read input file names from FILE\n\
3491 -I, --search-path=LIST set search path for input files\n\
3492 -m, --min-regexp-length=N set minimum regexp length to N\n\
3493 -M, --max-regexp-length=N set maximum regexp length to N\n\
3494 ",
3495 "\
3496 -n, --no-nested-classes exclude nested classes\n\
3497 -o, --output-file=FILE set output file name to FILE\n\
3498 -p, --position-info print info about position in file\n\
3499 -s, --no-structs-or-unions don't record structs or unions\n\
3500 -v, --verbose be verbose\n\
3501 -V, --very-verbose be very verbose\n\
3502 -x, --no-regexps don't record regular expressions\n\
3503 --help display this help\n\
3504 --version display version info\n\
3505 \n\
3506 "
3507 };
3508
3509 static _Noreturn void
3510 usage (int error)
3511 {
3512 int i;
3513 for (i = 0; i < sizeof usage_message / sizeof *usage_message; i++)
3514 fputs (usage_message[i], stdout);
3515 exit (error ? EXIT_FAILURE : EXIT_SUCCESS);
3516 }
3517
3518
3519 /* Display version and copyright info. The VERSION macro is set
3520 from config.h and contains the Emacs version. */
3521
3522 #ifndef VERSION
3523 # define VERSION "21"
3524 #endif
3525
3526 static _Noreturn void
3527 version (void)
3528 {
3529 char emacs_copyright[] = COPYRIGHT;
3530
3531 printf ("ebrowse %s\n", VERSION);
3532 puts (emacs_copyright);
3533 puts ("This program is distributed under the same terms as Emacs.");
3534 exit (EXIT_SUCCESS);
3535 }
3536
3537
3538 /* Parse one input file FILE, adding classes and members to the symbol
3539 table. */
3540
3541 static void
3542 process_file (char *file)
3543 {
3544 FILE *fp;
3545
3546 fp = open_file (file);
3547 if (fp)
3548 {
3549 size_t nread, nbytes;
3550
3551 /* Give a progress indication if needed. */
3552 if (f_very_verbose)
3553 {
3554 puts (filename);
3555 fflush (stdout);
3556 }
3557 else if (f_verbose)
3558 {
3559 putchar ('.');
3560 fflush (stdout);
3561 }
3562
3563 /* Read file to inbuffer. */
3564 for (nread = 0;;)
3565 {
3566 if (nread + READ_CHUNK_SIZE >= inbuffer_size)
3567 {
3568 inbuffer_size = nread + READ_CHUNK_SIZE + 1;
3569 inbuffer = (char *) xrealloc (inbuffer, inbuffer_size);
3570 }
3571
3572 nbytes = fread (inbuffer + nread, 1, READ_CHUNK_SIZE, fp);
3573 if (nbytes == 0)
3574 break;
3575 nread += nbytes;
3576 }
3577 inbuffer[nread] = '\0';
3578
3579 /* Reinitialize scanner and parser for the new input file. */
3580 re_init_scanner ();
3581 re_init_parser ();
3582
3583 /* Parse it and close the file. */
3584 yyparse ();
3585 fclose (fp);
3586 }
3587 }
3588
3589
3590 /* Read a line from stream FP and return a pointer to a static buffer
3591 containing its contents without the terminating newline. Value
3592 is null when EOF is reached. */
3593
3594 static char *
3595 read_line (FILE *fp)
3596 {
3597 static char *buffer;
3598 static int buffer_size;
3599 int i = 0, c;
3600
3601 while ((c = getc (fp)) != EOF && c != '\n')
3602 {
3603 if (i >= buffer_size)
3604 {
3605 buffer_size = max (100, buffer_size * 2);
3606 buffer = (char *) xrealloc (buffer, buffer_size);
3607 }
3608
3609 buffer[i++] = c;
3610 }
3611
3612 if (c == EOF && i == 0)
3613 return NULL;
3614
3615 if (i == buffer_size)
3616 {
3617 buffer_size = max (100, buffer_size * 2);
3618 buffer = (char *) xrealloc (buffer, buffer_size);
3619 }
3620
3621 buffer[i] = '\0';
3622 if (i > 0 && buffer[i - 1] == '\r')
3623 buffer[i - 1] = '\0';
3624 return buffer;
3625 }
3626
3627
3628 /* Main entry point. */
3629
3630 int
3631 main (int argc, char **argv)
3632 {
3633 int i;
3634 int any_inputfiles = 0;
3635 static const char *out_filename = DEFAULT_OUTFILE;
3636 static char **input_filenames = NULL;
3637 static int input_filenames_size = 0;
3638 static int n_input_files;
3639
3640 filename = "command line";
3641 yyout = stdout;
3642
3643 while ((i = getopt_long (argc, argv, "af:I:m:M:no:p:svVx",
3644 options, NULL)) != EOF)
3645 {
3646 switch (i)
3647 {
3648 /* Experimental. */
3649 case 'p':
3650 info_position = atoi (optarg);
3651 break;
3652
3653 case 'n':
3654 f_nested_classes = 0;
3655 break;
3656
3657 case 'x':
3658 f_regexps = 0;
3659 break;
3660
3661 /* Add the name of a file containing more input files. */
3662 case 'f':
3663 if (n_input_files == input_filenames_size)
3664 {
3665 input_filenames_size = max (10, 2 * input_filenames_size);
3666 input_filenames = (char **) xrealloc ((void *)input_filenames,
3667 input_filenames_size);
3668 }
3669 input_filenames[n_input_files++] = xstrdup (optarg);
3670 break;
3671
3672 /* Append new output to output file instead of truncating it. */
3673 case 'a':
3674 f_append = 1;
3675 break;
3676
3677 /* Include structs in the output */
3678 case 's':
3679 f_structs = 0;
3680 break;
3681
3682 /* Be verbose (give a progress indication). */
3683 case 'v':
3684 f_verbose = 1;
3685 break;
3686
3687 /* Be very verbose (print file names as they are processed). */
3688 case 'V':
3689 f_verbose = 1;
3690 f_very_verbose = 1;
3691 break;
3692
3693 /* Change the name of the output file. */
3694 case 'o':
3695 out_filename = optarg;
3696 break;
3697
3698 /* Set minimum length for regular expression strings
3699 when recorded in the output file. */
3700 case 'm':
3701 min_regexp = atoi (optarg);
3702 break;
3703
3704 /* Set maximum length for regular expression strings
3705 when recorded in the output file. */
3706 case 'M':
3707 max_regexp = atoi (optarg);
3708 break;
3709
3710 /* Add to search path. */
3711 case 'I':
3712 add_search_path (optarg);
3713 break;
3714
3715 /* Display help */
3716 case -2:
3717 usage (0);
3718 break;
3719
3720 case -3:
3721 version ();
3722 break;
3723 }
3724 }
3725
3726 /* Call init_scanner after command line flags have been processed to be
3727 able to add keywords depending on command line (not yet
3728 implemented). */
3729 init_scanner ();
3730 init_sym ();
3731
3732 /* Open output file */
3733 if (*out_filename)
3734 {
3735 if (f_append)
3736 {
3737 /* Check that the file to append to exists, and is not
3738 empty. More specifically, it should be a valid file
3739 produced by a previous run of ebrowse, but that's too
3740 difficult to check. */
3741 FILE *fp;
3742 int rc;
3743
3744 fp = fopen (out_filename, "r");
3745 if (fp == NULL)
3746 {
3747 yyerror ("file `%s' must exist for --append", out_filename);
3748 exit (EXIT_FAILURE);
3749 }
3750
3751 rc = fseek (fp, 0, SEEK_END);
3752 if (rc == -1)
3753 {
3754 yyerror ("error seeking in file `%s'", out_filename);
3755 exit (EXIT_FAILURE);
3756 }
3757
3758 rc = ftell (fp);
3759 if (rc == -1)
3760 {
3761 yyerror ("error getting size of file `%s'", out_filename);
3762 exit (EXIT_FAILURE);
3763 }
3764
3765 else if (rc == 0)
3766 {
3767 yyerror ("file `%s' is empty", out_filename);
3768 /* It may be ok to use an empty file for appending.
3769 exit (EXIT_FAILURE); */
3770 }
3771
3772 fclose (fp);
3773 }
3774
3775 yyout = fopen (out_filename, f_append ? "a" : "w");
3776 if (yyout == NULL)
3777 {
3778 yyerror ("cannot open output file `%s'", out_filename);
3779 exit (EXIT_FAILURE);
3780 }
3781 }
3782
3783 /* Process input files specified on the command line. */
3784 while (optind < argc)
3785 {
3786 process_file (argv[optind++]);
3787 any_inputfiles = 1;
3788 }
3789
3790 /* Process files given on stdin if no files specified. */
3791 if (!any_inputfiles && n_input_files == 0)
3792 {
3793 char *file;
3794 while ((file = read_line (stdin)) != NULL)
3795 process_file (file);
3796 }
3797 else
3798 {
3799 /* Process files from `--files=FILE'. Every line in FILE names
3800 one input file to process. */
3801 for (i = 0; i < n_input_files; ++i)
3802 {
3803 FILE *fp = fopen (input_filenames[i], "r");
3804
3805 if (fp == NULL)
3806 yyerror ("cannot open input file `%s'", input_filenames[i]);
3807 else
3808 {
3809 char *file;
3810 while ((file = read_line (fp)) != NULL)
3811 process_file (file);
3812 fclose (fp);
3813 }
3814 }
3815 }
3816
3817 /* Write output file. */
3818 dump_roots (yyout);
3819
3820 /* Close output file. */
3821 if (yyout != stdout)
3822 fclose (yyout);
3823
3824 return EXIT_SUCCESS;
3825 }
3826
3827 /* ebrowse.c ends here */
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