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(Making links to `info'): Remove .gitignore.
[emacs.git] / lib-src / ebrowse.c
blob85def362dea2759ba194d984677bfe2d6264fc0b
1 /* ebrowse.c --- parsing files for the ebrowse C++ browser
2
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
5 Free Software Foundation, Inc.
6
7 This file is part of GNU Emacs.
8
9 GNU Emacs is free software: you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation, either version 3 of the License, or
12 (at your option) any later version.
13
14 GNU Emacs is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 You should have received a copy of the GNU General Public License
20 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
21
22
23 #ifdef HAVE_CONFIG_H
24 #include <config.h>
25 #endif
26
27 #include <stdio.h>
28
29 #ifdef HAVE_STDLIB_H
30 #include <stdlib.h>
31 #endif
32
33 #ifdef HAVE_STRING_H
34 #include <string.h>
35 #endif
36
37 #include <ctype.h>
38 #include <assert.h>
39 #include "getopt.h"
40
41 /* The SunOS compiler doesn't have SEEK_END. */
42 #ifndef SEEK_END
43 #define SEEK_END 2
44 #endif
45
46 /* Conditionalize function prototypes. */
47
48 #ifdef PROTOTYPES /* From config.h. */
49 #define P_(x) x
50 #else
51 #define P_(x) ()
52 #endif
53
54 /* Value is non-zero if strings X and Y compare equal. */
55
56 #define streq(X, Y) (*(X) == *(Y) && strcmp ((X) + 1, (Y) + 1) == 0)
57
58 /* The ubiquitous `max' and `min' macros. */
59
60 #ifndef max
61 #define max(X, Y) ((X) > (Y) ? (X) : (Y))
62 #define min(X, Y) ((X) < (Y) ? (X) : (Y))
63 #endif
64
65 /* Files are read in chunks of this number of bytes. */
66
67 #define READ_CHUNK_SIZE (100 * 1024)
68
69 /* The character used as a separator in path lists (like $PATH). */
70
71 #if defined(__MSDOS__)
72 #define PATH_LIST_SEPARATOR ';'
73 #define FILENAME_EQ(X,Y) (strcasecmp(X,Y) == 0)
74 #else
75 #if defined(WINDOWSNT)
76 #define PATH_LIST_SEPARATOR ';'
77 #define FILENAME_EQ(X,Y) (stricmp(X,Y) == 0)
78 #else
79 #define PATH_LIST_SEPARATOR ':'
80 #define FILENAME_EQ(X,Y) (streq(X,Y))
81 #endif
82 #endif
83 /* The default output file name. */
84
85 #define DEFAULT_OUTFILE "BROWSE"
86
87 /* A version string written to the output file. Change this whenever
88 the structure of the output file changes. */
89
90 #define EBROWSE_FILE_VERSION "ebrowse 5.0"
91
92 /* The output file consists of a tree of Lisp objects, with major
93 nodes built out of Lisp structures. These are the heads of the
94 Lisp structs with symbols identifying their type. */
95
96 #define TREE_HEADER_STRUCT "[ebrowse-hs "
97 #define TREE_STRUCT "[ebrowse-ts "
98 #define MEMBER_STRUCT "[ebrowse-ms "
99 #define BROWSE_STRUCT "[ebrowse-bs "
100 #define CLASS_STRUCT "[ebrowse-cs "
101
102 /* The name of the symbol table entry for global functions, variables,
103 defines etc. This name also appears in the browser display. */
104
105 #define GLOBALS_NAME "*Globals*"
106
107 /* Token definitions. */
108
109 enum token
110 {
111 YYEOF = 0, /* end of file */
112 CSTRING = 256, /* string constant */
113 CCHAR, /* character constant */
114 CINT, /* integral constant */
115 CFLOAT, /* real constant */
116
117 ELLIPSIS, /* ... */
118 LSHIFTASGN, /* <<= */
119 RSHIFTASGN, /* >>= */
120 ARROWSTAR, /* ->* */
121 IDENT, /* identifier */
122 DIVASGN, /* /= */
123 INC, /* ++ */
124 ADDASGN, /* += */
125 DEC, /* -- */
126 ARROW, /* -> */
127 SUBASGN, /* -= */
128 MULASGN, /* *= */
129 MODASGN, /* %= */
130 LOR, /* || */
131 ORASGN, /* |= */
132 LAND, /* && */
133 ANDASGN, /* &= */
134 XORASGN, /* ^= */
135 POINTSTAR, /* .* */
136 DCOLON, /* :: */
137 EQ, /* == */
138 NE, /* != */
139 LE, /* <= */
140 LSHIFT, /* << */
141 GE, /* >= */
142 RSHIFT, /* >> */
143
144 /* Keywords. The undef's are there because these
145 three symbols are very likely to be defined somewhere. */
146 #undef BOOL
147 #undef TRUE
148 #undef FALSE
149
150 ASM, /* asm */
151 AUTO, /* auto */
152 BREAK, /* break */
153 CASE, /* case */
154 CATCH, /* catch */
155 CHAR, /* char */
156 CLASS, /* class */
157 CONST, /* const */
158 CONTINUE, /* continue */
159 DEFAULT, /* default */
160 DELETE, /* delete */
161 DO, /* do */
162 DOUBLE, /* double */
163 ELSE, /* else */
164 ENUM, /* enum */
165 EXTERN, /* extern */
166 FLOAT, /* float */
167 FOR, /* for */
168 FRIEND, /* friend */
169 GOTO, /* goto */
170 IF, /* if */
171 T_INLINE, /* inline */
172 INT, /* int */
173 LONG, /* long */
174 NEW, /* new */
175 OPERATOR, /* operator */
176 PRIVATE, /* private */
177 PROTECTED, /* protected */
178 PUBLIC, /* public */
179 REGISTER, /* register */
180 RETURN, /* return */
181 SHORT, /* short */
182 SIGNED, /* signed */
183 SIZEOF, /* sizeof */
184 STATIC, /* static */
185 STRUCT, /* struct */
186 SWITCH, /* switch */
187 TEMPLATE, /* template */
188 THIS, /* this */
189 THROW, /* throw */
190 TRY, /* try */
191 TYPEDEF, /* typedef */
192 UNION, /* union */
193 UNSIGNED, /* unsigned */
194 VIRTUAL, /* virtual */
195 VOID, /* void */
196 VOLATILE, /* volatile */
197 WHILE, /* while */
198 MUTABLE, /* mutable */
199 BOOL, /* bool */
200 TRUE, /* true */
201 FALSE, /* false */
202 SIGNATURE, /* signature (GNU extension) */
203 NAMESPACE, /* namespace */
204 EXPLICIT, /* explicit */
205 TYPENAME, /* typename */
206 CONST_CAST, /* const_cast */
207 DYNAMIC_CAST, /* dynamic_cast */
208 REINTERPRET_CAST, /* reinterpret_cast */
209 STATIC_CAST, /* static_cast */
210 TYPEID, /* typeid */
211 USING, /* using */
212 WCHAR /* wchar_t */
213 };
214
215 /* Storage classes, in a wider sense. */
216
217 enum sc
218 {
219 SC_UNKNOWN,
220 SC_MEMBER, /* Is an instance member. */
221 SC_STATIC, /* Is static member. */
222 SC_FRIEND, /* Is friend function. */
223 SC_TYPE /* Is a type definition. */
224 };
225
226 /* Member visibility. */
227
228 enum visibility
229 {
230 V_PUBLIC,
231 V_PROTECTED,
232 V_PRIVATE
233 };
234
235 /* Member flags. */
236
237 #define F_VIRTUAL 1 /* Is virtual function. */
238 #define F_INLINE 2 /* Is inline function. */
239 #define F_CONST 4 /* Is const. */
240 #define F_PURE 8 /* Is pure virtual function. */
241 #define F_MUTABLE 16 /* Is mutable. */
242 #define F_TEMPLATE 32 /* Is a template. */
243 #define F_EXPLICIT 64 /* Is explicit constructor. */
244 #define F_THROW 128 /* Has a throw specification. */
245 #define F_EXTERNC 256 /* Is declared extern "C". */
246 #define F_DEFINE 512 /* Is a #define. */
247
248 /* Two macros to set and test a bit in an int. */
249
250 #define SET_FLAG(F, FLAG) ((F) |= (FLAG))
251 #define HAS_FLAG(F, FLAG) (((F) & (FLAG)) != 0)
252
253 /* Structure describing a class member. */
254
255 struct member
256 {
257 struct member *next; /* Next in list of members. */
258 struct member *anext; /* Collision chain in member_table. */
259 struct member **list; /* Pointer to list in class. */
260 unsigned param_hash; /* Hash value for parameter types. */
261 int vis; /* Visibility (public, ...). */
262 int flags; /* See F_* above. */
263 char *regexp; /* Matching regular expression. */
264 char *filename; /* Don't free this shared string. */
265 int pos; /* Buffer position of occurrence. */
266 char *def_regexp; /* Regular expression matching definition. */
267 char *def_filename; /* File name of definition. */
268 int def_pos; /* Buffer position of definition. */
269 char name[1]; /* Member name. */
270 };
271
272 /* Structures of this type are used to connect class structures with
273 their super and subclasses. */
274
275 struct link
276 {
277 struct sym *sym; /* The super or subclass. */
278 struct link *next; /* Next in list or NULL. */
279 };
280
281 /* Structure used to record namespace aliases. */
282
283 struct alias
284 {
285 struct alias *next; /* Next in list. */
286 struct sym *namesp; /* Namespace in which defined. */
287 struct link *aliasee; /* List of aliased namespaces (A::B::C...). */
288 char name[1]; /* Alias name. */
289 };
290
291 /* The structure used to describe a class in the symbol table,
292 or a namespace in all_namespaces. */
293
294 struct sym
295 {
296 int flags; /* Is class a template class?. */
297 unsigned char visited; /* Used to find circles. */
298 struct sym *next; /* Hash collision list. */
299 struct link *subs; /* List of subclasses. */
300 struct link *supers; /* List of superclasses. */
301 struct member *vars; /* List of instance variables. */
302 struct member *fns; /* List of instance functions. */
303 struct member *static_vars; /* List of static variables. */
304 struct member *static_fns; /* List of static functions. */
305 struct member *friends; /* List of friend functions. */
306 struct member *types; /* List of local types. */
307 char *regexp; /* Matching regular expression. */
308 int pos; /* Buffer position. */
309 char *filename; /* File in which it can be found. */
310 char *sfilename; /* File in which members can be found. */
311 struct sym *namesp; /* Namespace in which defined. . */
312 char name[1]; /* Name of the class. */
313 };
314
315 /* Experimental: Print info for `--position-info'. We print
316 '(CLASS-NAME SCOPE MEMBER-NAME). */
317
318 #define P_DEFN 1
319 #define P_DECL 2
320
321 int info_where;
322 struct sym *info_cls = NULL;
323 struct member *info_member = NULL;
324
325 /* Experimental. For option `--position-info', the buffer position we
326 are interested in. When this position is reached, print out
327 information about what we know about that point. */
328
329 int info_position = -1;
330
331 /* Command line options structure for getopt_long. */
332
333 struct option options[] =
334 {
335 {"append", no_argument, NULL, 'a'},
336 {"files", required_argument, NULL, 'f'},
337 {"help", no_argument, NULL, -2},
338 {"min-regexp-length", required_argument, NULL, 'm'},
339 {"max-regexp-length", required_argument, NULL, 'M'},
340 {"no-nested-classes", no_argument, NULL, 'n'},
341 {"no-regexps", no_argument, NULL, 'x'},
342 {"no-structs-or-unions", no_argument, NULL, 's'},
343 {"output-file", required_argument, NULL, 'o'},
344 {"position-info", required_argument, NULL, 'p'},
345 {"search-path", required_argument, NULL, 'I'},
346 {"verbose", no_argument, NULL, 'v'},
347 {"version", no_argument, NULL, -3},
348 {"very-verbose", no_argument, NULL, 'V'},
349 {NULL, 0, NULL, 0}
350 };
351
352 /* Semantic values of tokens. Set by yylex.. */
353
354 unsigned yyival; /* Set for token CINT. */
355 char *yytext; /* Set for token IDENT. */
356 char *yytext_end;
357
358 /* Output file. */
359
360 FILE *yyout;
361
362 /* Current line number. */
363
364 int yyline;
365
366 /* The name of the current input file. */
367
368 char *filename;
369
370 /* Three character class vectors, and macros to test membership
371 of characters. */
372
373 char is_ident[255];
374 char is_digit[255];
375 char is_white[255];
376
377 #define IDENTP(C) is_ident[(unsigned char) (C)]
378 #define DIGITP(C) is_digit[(unsigned char) (C)]
379 #define WHITEP(C) is_white[(unsigned char) (C)]
380
381 /* Command line flags. */
382
383 int f_append;
384 int f_verbose;
385 int f_very_verbose;
386 int f_structs = 1;
387 int f_regexps = 1;
388 int f_nested_classes = 1;
389
390 /* Maximum and minimum lengths of regular expressions matching a
391 member, class etc., for writing them to the output file. These are
392 overridable from the command line. */
393
394 int min_regexp = 5;
395 int max_regexp = 50;
396
397 /* Input buffer. */
398
399 char *inbuffer;
400 char *in;
401 int inbuffer_size;
402
403 /* Return the current buffer position in the input file. */
404
405 #define BUFFER_POS() (in - inbuffer)
406
407 /* If current lookahead is CSTRING, the following points to the
408 first character in the string constant. Used for recognizing
409 extern "C". */
410
411 char *string_start;
412
413 /* The size of the hash tables for classes.and members. Should be
414 prime. */
415
416 #define TABLE_SIZE 1001
417
418 /* The hash table for class symbols. */
419
420 struct sym *class_table[TABLE_SIZE];
421
422 /* Hash table containing all member structures. This is generally
423 faster for member lookup than traversing the member lists of a
424 `struct sym'. */
425
426 struct member *member_table[TABLE_SIZE];
427
428 /* Hash table for namespace aliases */
429
430 struct alias *namespace_alias_table[TABLE_SIZE];
431
432 /* The special class symbol used to hold global functions,
433 variables etc. */
434
435 struct sym *global_symbols;
436
437 /* The current namespace. */
438
439 struct sym *current_namespace;
440
441 /* The list of all known namespaces. */
442
443 struct sym *all_namespaces;
444
445 /* Stack of namespaces we're currently nested in, during the parse. */
446
447 struct sym **namespace_stack;
448 int namespace_stack_size;
449 int namespace_sp;
450
451 /* The current lookahead token. */
452
453 int tk = -1;
454
455 /* Structure describing a keyword. */
456
457 struct kw
458 {
459 char *name; /* Spelling. */
460 int tk; /* Token value. */
461 struct kw *next; /* Next in collision chain. */
462 };
463
464 /* Keywords are lookup up in a hash table of their own. */
465
466 #define KEYWORD_TABLE_SIZE 1001
467 struct kw *keyword_table[KEYWORD_TABLE_SIZE];
468
469 /* Search path. */
470
471 struct search_path
472 {
473 char *path;
474 struct search_path *next;
475 };
476
477 struct search_path *search_path;
478 struct search_path *search_path_tail;
479
480 /* Function prototypes. */
481
482 int yylex P_ ((void));
483 void yyparse P_ ((void));
484 void re_init_parser P_ ((void));
485 char *token_string P_ ((int));
486 char *matching_regexp P_ ((void));
487 void init_sym P_ ((void));
488 struct sym *add_sym P_ ((char *, struct sym *));
489 void add_link P_ ((struct sym *, struct sym *));
490 void add_member_defn P_ ((struct sym *, char *, char *,
491 int, unsigned, int, int, int));
492 void add_member_decl P_ ((struct sym *, char *, char *, int,
493 unsigned, int, int, int, int));
494 void dump_roots P_ ((FILE *));
495 void *xmalloc P_ ((int));
496 void xfree P_ ((void *));
497 void add_global_defn P_ ((char *, char *, int, unsigned, int, int, int));
498 void add_global_decl P_ ((char *, char *, int, unsigned, int, int, int));
499 void add_define P_ ((char *, char *, int));
500 void mark_inherited_virtual P_ ((void));
501 void leave_namespace P_ ((void));
502 void enter_namespace P_ ((char *));
503 void register_namespace_alias P_ ((char *, struct link *));
504 void insert_keyword P_ ((char *, int));
505 void re_init_scanner P_ ((void));
506 void init_scanner P_ ((void));
507 void usage P_ ((int));
508 void version P_ ((void));
509 void process_file P_ ((char *));
510 void add_search_path P_ ((char *));
511 FILE *open_file P_ ((char *));
512 int process_pp_line P_ ((void));
513 int dump_members P_ ((FILE *, struct member *));
514 void dump_sym P_ ((FILE *, struct sym *));
515 int dump_tree P_ ((FILE *, struct sym *));
516 struct member *find_member P_ ((struct sym *, char *, int, int, unsigned));
517 struct member *add_member P_ ((struct sym *, char *, int, int, unsigned));
518 void mark_virtual P_ ((struct sym *));
519 void mark_virtual P_ ((struct sym *));
520 struct sym *make_namespace P_ ((char *, struct sym *));
521 char *sym_scope P_ ((struct sym *));
522 char *sym_scope_1 P_ ((struct sym *));
523 int skip_to P_ ((int));
524 void skip_matching P_ ((void));
525 void member P_ ((struct sym *, int));
526 void class_body P_ ((struct sym *, int));
527 void class_definition P_ ((struct sym *, int, int, int));
528 void declaration P_ ((int));
529 unsigned parm_list P_ ((int *));
530 char *operator_name P_ ((int *));
531 struct sym *parse_classname P_ ((void));
532 struct sym *parse_qualified_ident_or_type P_ ((char **));
533 void parse_qualified_param_ident_or_type P_ ((char **));
534 int globals P_ ((int));
535 void yyerror P_ ((char *, char *));
536 void usage P_ ((int)) NO_RETURN;
537 void version P_ (()) NO_RETURN;
538
539
540 \f
541 /***********************************************************************
542 Utilities
543 ***********************************************************************/
544
545 /* Print an error in a printf-like style with the current input file
546 name and line number. */
547
548 void
549 yyerror (format, s)
550 char *format, *s;
551 {
552 fprintf (stderr, "%s:%d: ", filename, yyline);
553 fprintf (stderr, format, s);
554 putc ('\n', stderr);
555 }
556
557
558 /* Like malloc but print an error and exit if not enough memory is
559 available. */
560
561 void *
562 xmalloc (nbytes)
563 int nbytes;
564 {
565 void *p = malloc (nbytes);
566 if (p == NULL)
567 {
568 yyerror ("out of memory", NULL);
569 exit (EXIT_FAILURE);
570 }
571 return p;
572 }
573
574
575 /* Like realloc but print an error and exit if out of memory. */
576
577 void *
578 xrealloc (p, sz)
579 void *p;
580 int sz;
581 {
582 p = realloc (p, sz);
583 if (p == NULL)
584 {
585 yyerror ("out of memory", NULL);
586 exit (EXIT_FAILURE);
587 }
588 return p;
589 }
590
591
592 /* Like strdup, but print an error and exit if not enough memory is
593 available.. If S is null, return null. */
594
595 char *
596 xstrdup (s)
597 char *s;
598 {
599 if (s)
600 s = strcpy (xmalloc (strlen (s) + 1), s);
601 return s;
602 }
603
604
605 \f
606 /***********************************************************************
607 Symbols
608 ***********************************************************************/
609
610 /* Initialize the symbol table. This currently only sets up the
611 special symbol for globals (`*Globals*'). */
612
613 void
614 init_sym ()
615 {
616 global_symbols = add_sym (GLOBALS_NAME, NULL);
617 }
618
619
620 /* Add a symbol for class NAME to the symbol table. NESTED_IN_CLASS
621 is the class in which class NAME was found. If it is null,
622 this means the scope of NAME is the current namespace.
623
624 If a symbol for NAME already exists, return that. Otherwise
625 create a new symbol and set it to default values. */
626
627 struct sym *
628 add_sym (name, nested_in_class)
629 char *name;
630 struct sym *nested_in_class;
631 {
632 struct sym *sym;
633 unsigned h;
634 char *s;
635 struct sym *scope = nested_in_class ? nested_in_class : current_namespace;
636
637 for (s = name, h = 0; *s; ++s)
638 h = (h << 1) ^ *s;
639 h %= TABLE_SIZE;
640
641 for (sym = class_table[h]; sym; sym = sym->next)
642 if (streq (name, sym->name)
643 && ((!sym->namesp && !scope)
644 || (sym->namesp && scope
645 && streq (sym->namesp->name, scope->name))))
646 break;
647
648 if (sym == NULL)
649 {
650 if (f_very_verbose)
651 {
652 putchar ('\t');
653 puts (name);
654 }
655
656 sym = (struct sym *) xmalloc (sizeof *sym + strlen (name));
657 bzero (sym, sizeof *sym);
658 strcpy (sym->name, name);
659 sym->namesp = scope;
660 sym->next = class_table[h];
661 class_table[h] = sym;
662 }
663
664 return sym;
665 }
666
667
668 /* Add links between superclass SUPER and subclass SUB. */
669
670 void
671 add_link (super, sub)
672 struct sym *super, *sub;
673 {
674 struct link *lnk, *lnk2, *p, *prev;
675
676 /* See if a link already exists. */
677 for (p = super->subs, prev = NULL;
678 p && strcmp (sub->name, p->sym->name) > 0;
679 prev = p, p = p->next)
680 ;
681
682 /* Avoid duplicates. */
683 if (p == NULL || p->sym != sub)
684 {
685 lnk = (struct link *) xmalloc (sizeof *lnk);
686 lnk2 = (struct link *) xmalloc (sizeof *lnk2);
687
688 lnk->sym = sub;
689 lnk->next = p;
690
691 if (prev)
692 prev->next = lnk;
693 else
694 super->subs = lnk;
695
696 lnk2->sym = super;
697 lnk2->next = sub->supers;
698 sub->supers = lnk2;
699 }
700 }
701
702
703 /* Find in class CLS member NAME.
704
705 VAR non-zero means look for a member variable; otherwise a function
706 is searched. SC specifies what kind of member is searched---a
707 static, or per-instance member etc. HASH is a hash code for the
708 parameter types of functions. Value is a pointer to the member
709 found or null if not found. */
710
711 struct member *
712 find_member (cls, name, var, sc, hash)
713 struct sym *cls;
714 char *name;
715 int var, sc;
716 unsigned hash;
717 {
718 struct member **list;
719 struct member *p;
720 unsigned name_hash = 0;
721 char *s;
722 int i;
723
724 switch (sc)
725 {
726 case SC_FRIEND:
727 list = &cls->friends;
728 break;
729
730 case SC_TYPE:
731 list = &cls->types;
732 break;
733
734 case SC_STATIC:
735 list = var ? &cls->static_vars : &cls->static_fns;
736 break;
737
738 default:
739 list = var ? &cls->vars : &cls->fns;
740 break;
741 }
742
743 for (s = name; *s; ++s)
744 name_hash = (name_hash << 1) ^ *s;
745 i = name_hash % TABLE_SIZE;
746
747 for (p = member_table[i]; p; p = p->anext)
748 if (p->list == list && p->param_hash == hash && streq (name, p->name))
749 break;
750
751 return p;
752 }
753
754
755 /* Add to class CLS information for the declaration of member NAME.
756 REGEXP is a regexp matching the declaration, if non-null. POS is
757 the position in the source where the declaration is found. HASH is
758 a hash code for the parameter list of the member, if it's a
759 function. VAR non-zero means member is a variable or type. SC
760 specifies the type of member (instance member, static, ...). VIS
761 is the member's visibility (public, protected, private). FLAGS is
762 a bit set giving additional information about the member (see the
763 F_* defines). */
764
765 void
766 add_member_decl (cls, name, regexp, pos, hash, var, sc, vis, flags)
767 struct sym *cls;
768 char *name;
769 char *regexp;
770 int pos;
771 unsigned hash;
772 int var;
773 int sc;
774 int vis;
775 int flags;
776 {
777 struct member *m;
778
779 m = find_member (cls, name, var, sc, hash);
780 if (m == NULL)
781 m = add_member (cls, name, var, sc, hash);
782
783 /* Have we seen a new filename? If so record that. */
784 if (!cls->filename || !FILENAME_EQ (cls->filename, filename))
785 m->filename = filename;
786
787 m->regexp = regexp;
788 m->pos = pos;
789 m->flags = flags;
790
791 switch (vis)
792 {
793 case PRIVATE:
794 m->vis = V_PRIVATE;
795 break;
796
797 case PROTECTED:
798 m->vis = V_PROTECTED;
799 break;
800
801 case PUBLIC:
802 m->vis = V_PUBLIC;
803 break;
804 }
805
806 info_where = P_DECL;
807 info_cls = cls;
808 info_member = m;
809 }
810
811
812 /* Add to class CLS information for the definition of member NAME.
813 REGEXP is a regexp matching the declaration, if non-null. POS is
814 the position in the source where the declaration is found. HASH is
815 a hash code for the parameter list of the member, if it's a
816 function. VAR non-zero means member is a variable or type. SC
817 specifies the type of member (instance member, static, ...). VIS
818 is the member's visibility (public, protected, private). FLAGS is
819 a bit set giving additional information about the member (see the
820 F_* defines). */
821
822 void
823 add_member_defn (cls, name, regexp, pos, hash, var, sc, flags)
824 struct sym *cls;
825 char *name;
826 char *regexp;
827 int pos;
828 unsigned hash;
829 int var;
830 int sc;
831 int flags;
832 {
833 struct member *m;
834
835 if (sc == SC_UNKNOWN)
836 {
837 m = find_member (cls, name, var, SC_MEMBER, hash);
838 if (m == NULL)
839 {
840 m = find_member (cls, name, var, SC_STATIC, hash);
841 if (m == NULL)
842 m = add_member (cls, name, var, sc, hash);
843 }
844 }
845 else
846 {
847 m = find_member (cls, name, var, sc, hash);
848 if (m == NULL)
849 m = add_member (cls, name, var, sc, hash);
850 }
851
852 if (!cls->sfilename)
853 cls->sfilename = filename;
854
855 if (!FILENAME_EQ (cls->sfilename, filename))
856 m->def_filename = filename;
857
858 m->def_regexp = regexp;
859 m->def_pos = pos;
860 m->flags |= flags;
861
862 info_where = P_DEFN;
863 info_cls = cls;
864 info_member = m;
865 }
866
867
868 /* Add a symbol for a define named NAME to the symbol table.
869 REGEXP is a regular expression matching the define in the source,
870 if it is non-null. POS is the position in the file. */
871
872 void
873 add_define (name, regexp, pos)
874 char *name, *regexp;
875 int pos;
876 {
877 add_global_defn (name, regexp, pos, 0, 1, SC_FRIEND, F_DEFINE);
878 add_global_decl (name, regexp, pos, 0, 1, SC_FRIEND, F_DEFINE);
879 }
880
881
882 /* Add information for the global definition of NAME.
883 REGEXP is a regexp matching the declaration, if non-null. POS is
884 the position in the source where the declaration is found. HASH is
885 a hash code for the parameter list of the member, if it's a
886 function. VAR non-zero means member is a variable or type. SC
887 specifies the type of member (instance member, static, ...). VIS
888 is the member's visibility (public, protected, private). FLAGS is
889 a bit set giving additional information about the member (see the
890 F_* defines). */
891
892 void
893 add_global_defn (name, regexp, pos, hash, var, sc, flags)
894 char *name, *regexp;
895 int pos;
896 unsigned hash;
897 int var;
898 int sc;
899 int flags;
900 {
901 int i;
902 struct sym *sym;
903
904 /* Try to find out for which classes a function is a friend, and add
905 what we know about it to them. */
906 if (!var)
907 for (i = 0; i < TABLE_SIZE; ++i)
908 for (sym = class_table[i]; sym; sym = sym->next)
909 if (sym != global_symbols && sym->friends)
910 if (find_member (sym, name, 0, SC_FRIEND, hash))
911 add_member_defn (sym, name, regexp, pos, hash, 0,
912 SC_FRIEND, flags);
913
914 /* Add to global symbols. */
915 add_member_defn (global_symbols, name, regexp, pos, hash, var, sc, flags);
916 }
917
918
919 /* Add information for the global declaration of NAME.
920 REGEXP is a regexp matching the declaration, if non-null. POS is
921 the position in the source where the declaration is found. HASH is
922 a hash code for the parameter list of the member, if it's a
923 function. VAR non-zero means member is a variable or type. SC
924 specifies the type of member (instance member, static, ...). VIS
925 is the member's visibility (public, protected, private). FLAGS is
926 a bit set giving additional information about the member (see the
927 F_* defines). */
928
929 void
930 add_global_decl (name, regexp, pos, hash, var, sc, flags)
931 char *name, *regexp;
932 int pos;
933 unsigned hash;
934 int var;
935 int sc;
936 int flags;
937 {
938 /* Add declaration only if not already declared. Header files must
939 be processed before source files for this to have the right effect.
940 I do not want to handle implicit declarations at the moment. */
941 struct member *m;
942 struct member *found;
943
944 m = found = find_member (global_symbols, name, var, sc, hash);
945 if (m == NULL)
946 m = add_member (global_symbols, name, var, sc, hash);
947
948 /* Definition already seen => probably last declaration implicit.
949 Override. This means that declarations must always be added to
950 the symbol table before definitions. */
951 if (!found)
952 {
953 if (!global_symbols->filename
954 || !FILENAME_EQ (global_symbols->filename, filename))
955 m->filename = filename;
956
957 m->regexp = regexp;
958 m->pos = pos;
959 m->vis = V_PUBLIC;
960 m->flags = flags;
961
962 info_where = P_DECL;
963 info_cls = global_symbols;
964 info_member = m;
965 }
966 }
967
968
969 /* Add a symbol for member NAME to class CLS.
970 VAR non-zero means it's a variable. SC specifies the kind of
971 member. HASH is a hash code for the parameter types of a function.
972 Value is a pointer to the member's structure. */
973
974 struct member *
975 add_member (cls, name, var, sc, hash)
976 struct sym *cls;
977 char *name;
978 int var;
979 int sc;
980 unsigned hash;
981 {
982 struct member *m = (struct member *) xmalloc (sizeof *m + strlen (name));
983 struct member **list;
984 struct member *p;
985 struct member *prev;
986 unsigned name_hash = 0;
987 int i;
988 char *s;
989
990 strcpy (m->name, name);
991 m->param_hash = hash;
992
993 m->vis = 0;
994 m->flags = 0;
995 m->regexp = NULL;
996 m->filename = NULL;
997 m->pos = 0;
998 m->def_regexp = NULL;
999 m->def_filename = NULL;
1000 m->def_pos = 0;
1001
1002 assert (cls != NULL);
1003
1004 switch (sc)
1005 {
1006 case SC_FRIEND:
1007 list = &cls->friends;
1008 break;
1009
1010 case SC_TYPE:
1011 list = &cls->types;
1012 break;
1013
1014 case SC_STATIC:
1015 list = var ? &cls->static_vars : &cls->static_fns;
1016 break;
1017
1018 default:
1019 list = var ? &cls->vars : &cls->fns;
1020 break;
1021 }
1022
1023 for (s = name; *s; ++s)
1024 name_hash = (name_hash << 1) ^ *s;
1025 i = name_hash % TABLE_SIZE;
1026 m->anext = member_table[i];
1027 member_table[i] = m;
1028 m->list = list;
1029
1030 /* Keep the member list sorted. It's cheaper to do it here than to
1031 sort them in Lisp. */
1032 for (prev = NULL, p = *list;
1033 p && strcmp (name, p->name) > 0;
1034 prev = p, p = p->next)
1035 ;
1036
1037 m->next = p;
1038 if (prev)
1039 prev->next = m;
1040 else
1041 *list = m;
1042 return m;
1043 }
1044
1045
1046 /* Given the root R of a class tree, step through all subclasses
1047 recursively, marking functions as virtual that are declared virtual
1048 in base classes. */
1049
1050 void
1051 mark_virtual (r)
1052 struct sym *r;
1053 {
1054 struct link *p;
1055 struct member *m, *m2;
1056
1057 for (p = r->subs; p; p = p->next)
1058 {
1059 for (m = r->fns; m; m = m->next)
1060 if (HAS_FLAG (m->flags, F_VIRTUAL))
1061 {
1062 for (m2 = p->sym->fns; m2; m2 = m2->next)
1063 if (m->param_hash == m2->param_hash && streq (m->name, m2->name))
1064 SET_FLAG (m2->flags, F_VIRTUAL);
1065 }
1066
1067 mark_virtual (p->sym);
1068 }
1069 }
1070
1071
1072 /* For all roots of the class tree, mark functions as virtual that
1073 are virtual because of a virtual declaration in a base class. */
1074
1075 void
1076 mark_inherited_virtual ()
1077 {
1078 struct sym *r;
1079 int i;
1080
1081 for (i = 0; i < TABLE_SIZE; ++i)
1082 for (r = class_table[i]; r; r = r->next)
1083 if (r->supers == NULL)
1084 mark_virtual (r);
1085 }
1086
1087
1088 /* Create and return a symbol for a namespace with name NAME. */
1089
1090 struct sym *
1091 make_namespace (name, context)
1092 char *name;
1093 struct sym *context;
1094 {
1095 struct sym *s = (struct sym *) xmalloc (sizeof *s + strlen (name));
1096 bzero (s, sizeof *s);
1097 strcpy (s->name, name);
1098 s->next = all_namespaces;
1099 s->namesp = context;
1100 all_namespaces = s;
1101 return s;
1102 }
1103
1104
1105 /* Find the symbol for namespace NAME. If not found, retrun NULL */
1106
1107 struct sym *
1108 check_namespace (name, context)
1109 char *name;
1110 struct sym *context;
1111 {
1112 struct sym *p = NULL;
1113
1114 for (p = all_namespaces; p; p = p->next)
1115 {
1116 if (streq (p->name, name) && (p->namesp == context))
1117 break;
1118 }
1119
1120 return p;
1121 }
1122
1123 /* Find the symbol for namespace NAME. If not found, add a new symbol
1124 for NAME to all_namespaces. */
1125
1126 struct sym *
1127 find_namespace (name, context)
1128 char *name;
1129 struct sym *context;
1130 {
1131 struct sym *p = check_namespace (name, context);
1132
1133 if (p == NULL)
1134 p = make_namespace (name, context);
1135
1136 return p;
1137 }
1138
1139
1140 /* Find namespace alias with name NAME. If not found return NULL. */
1141
1142 struct link *
1143 check_namespace_alias (name)
1144 char *name;
1145 {
1146 struct link *p = NULL;
1147 struct alias *al;
1148 unsigned h;
1149 char *s;
1150
1151 for (s = name, h = 0; *s; ++s)
1152 h = (h << 1) ^ *s;
1153 h %= TABLE_SIZE;
1154
1155 for (al = namespace_alias_table[h]; al; al = al->next)
1156 if (streq (name, al->name) && (al->namesp == current_namespace))
1157 {
1158 p = al->aliasee;
1159 break;
1160 }
1161
1162 return p;
1163 }
1164
1165 /* Register the name NEW_NAME as an alias for namespace list OLD_NAME. */
1166
1167 void
1168 register_namespace_alias (new_name, old_name)
1169 char *new_name;
1170 struct link *old_name;
1171 {
1172 unsigned h;
1173 char *s;
1174 struct alias *al;
1175
1176 for (s = new_name, h = 0; *s; ++s)
1177 h = (h << 1) ^ *s;
1178 h %= TABLE_SIZE;
1179
1180
1181 /* Is it already in the table of aliases? */
1182 for (al = namespace_alias_table[h]; al; al = al->next)
1183 if (streq (new_name, al->name) && (al->namesp == current_namespace))
1184 return;
1185
1186 al = (struct alias *) xmalloc (sizeof *al + strlen (new_name));
1187 strcpy (al->name, new_name);
1188 al->next = namespace_alias_table[h];
1189 al->namesp = current_namespace;
1190 al->aliasee = old_name;
1191 namespace_alias_table[h] = al;
1192 }
1193
1194
1195 /* Enter namespace with name NAME. */
1196
1197 void
1198 enter_namespace (name)
1199 char *name;
1200 {
1201 struct sym *p = find_namespace (name, current_namespace);
1202
1203 if (namespace_sp == namespace_stack_size)
1204 {
1205 int size = max (10, 2 * namespace_stack_size);
1206 namespace_stack
1207 = (struct sym **) xrealloc ((void *)namespace_stack,
1208 size * sizeof *namespace_stack);
1209 namespace_stack_size = size;
1210 }
1211
1212 namespace_stack[namespace_sp++] = current_namespace;
1213 current_namespace = p;
1214 }
1215
1216
1217 /* Leave the current namespace. */
1218
1219 void
1220 leave_namespace ()
1221 {
1222 assert (namespace_sp > 0);
1223 current_namespace = namespace_stack[--namespace_sp];
1224 }
1225
1226
1227 \f
1228 /***********************************************************************
1229 Writing the Output File
1230 ***********************************************************************/
1231
1232 /* Write string S to the output file FP in a Lisp-readable form.
1233 If S is null, write out `()'. */
1234
1235 #define PUTSTR(s, fp) \
1236 do { \
1237 if (!s) \
1238 { \
1239 putc ('(', fp); \
1240 putc (')', fp); \
1241 putc (' ', fp); \
1242 } \
1243 else \
1244 { \
1245 putc ('"', fp); \
1246 fputs (s, fp); \
1247 putc ('"', fp); \
1248 putc (' ', fp); \
1249 } \
1250 } while (0)
1251
1252 /* A dynamically allocated buffer for constructing a scope name. */
1253
1254 char *scope_buffer;
1255 int scope_buffer_size;
1256 int scope_buffer_len;
1257
1258
1259 /* Make sure scope_buffer has enough room to add LEN chars to it. */
1260
1261 void
1262 ensure_scope_buffer_room (len)
1263 int len;
1264 {
1265 if (scope_buffer_len + len >= scope_buffer_size)
1266 {
1267 int new_size = max (2 * scope_buffer_size, scope_buffer_len + len);
1268 scope_buffer = (char *) xrealloc (scope_buffer, new_size);
1269 scope_buffer_size = new_size;
1270 }
1271 }
1272
1273
1274 /* Recursively add the scope names of symbol P and the scopes of its
1275 namespaces to scope_buffer. Value is a pointer to the complete
1276 scope name constructed. */
1277
1278 char *
1279 sym_scope_1 (p)
1280 struct sym *p;
1281 {
1282 int len;
1283
1284 if (p->namesp)
1285 sym_scope_1 (p->namesp);
1286
1287 if (*scope_buffer)
1288 {
1289 ensure_scope_buffer_room (3);
1290 strcat (scope_buffer, "::");
1291 scope_buffer_len += 2;
1292 }
1293
1294 len = strlen (p->name);
1295 ensure_scope_buffer_room (len + 1);
1296 strcat (scope_buffer, p->name);
1297 scope_buffer_len += len;
1298
1299 if (HAS_FLAG (p->flags, F_TEMPLATE))
1300 {
1301 ensure_scope_buffer_room (3);
1302 strcat (scope_buffer, "<>");
1303 scope_buffer_len += 2;
1304 }
1305
1306 return scope_buffer;
1307 }
1308
1309
1310 /* Return the scope of symbol P in printed representation, i.e.
1311 as it would appear in a C*+ source file. */
1312
1313 char *
1314 sym_scope (p)
1315 struct sym *p;
1316 {
1317 if (!scope_buffer)
1318 {
1319 scope_buffer_size = 1024;
1320 scope_buffer = (char *) xmalloc (scope_buffer_size);
1321 }
1322
1323 *scope_buffer = '\0';
1324 scope_buffer_len = 0;
1325
1326 if (p->namesp)
1327 sym_scope_1 (p->namesp);
1328
1329 return scope_buffer;
1330 }
1331
1332
1333 /* Dump the list of members M to file FP. Value is the length of the
1334 list. */
1335
1336 int
1337 dump_members (fp, m)
1338 FILE *fp;
1339 struct member *m;
1340 {
1341 int n;
1342
1343 putc ('(', fp);
1344
1345 for (n = 0; m; m = m->next, ++n)
1346 {
1347 fputs (MEMBER_STRUCT, fp);
1348 PUTSTR (m->name, fp);
1349 PUTSTR (NULL, fp); /* FIXME? scope for globals */
1350 fprintf (fp, "%u ", (unsigned) m->flags);
1351 PUTSTR (m->filename, fp);
1352 PUTSTR (m->regexp, fp);
1353 fprintf (fp, "%u ", (unsigned) m->pos);
1354 fprintf (fp, "%u ", (unsigned) m->vis);
1355 putc (' ', fp);
1356 PUTSTR (m->def_filename, fp);
1357 PUTSTR (m->def_regexp, fp);
1358 fprintf (fp, "%u", (unsigned) m->def_pos);
1359 putc (']', fp);
1360 putc ('\n', fp);
1361 }
1362
1363 putc (')', fp);
1364 putc ('\n', fp);
1365 return n;
1366 }
1367
1368
1369 /* Dump class ROOT to stream FP. */
1370
1371 void
1372 dump_sym (fp, root)
1373 FILE *fp;
1374 struct sym *root;
1375 {
1376 fputs (CLASS_STRUCT, fp);
1377 PUTSTR (root->name, fp);
1378
1379 /* Print scope, if any. */
1380 if (root->namesp)
1381 PUTSTR (sym_scope (root), fp);
1382 else
1383 PUTSTR (NULL, fp);
1384
1385 /* Print flags. */
1386 fprintf (fp, "%u", root->flags);
1387 PUTSTR (root->filename, fp);
1388 PUTSTR (root->regexp, fp);
1389 fprintf (fp, "%u", (unsigned) root->pos);
1390 PUTSTR (root->sfilename, fp);
1391 putc (']', fp);
1392 putc ('\n', fp);
1393 }
1394
1395
1396 /* Dump class ROOT and its subclasses to file FP. Value is the
1397 number of classes written. */
1398
1399 int
1400 dump_tree (fp, root)
1401 FILE *fp;
1402 struct sym *root;
1403 {
1404 struct link *lk;
1405 unsigned n = 0;
1406
1407 dump_sym (fp, root);
1408
1409 if (f_verbose)
1410 {
1411 putchar ('+');
1412 fflush (stdout);
1413 }
1414
1415 putc ('(', fp);
1416
1417 for (lk = root->subs; lk; lk = lk->next)
1418 {
1419 fputs (TREE_STRUCT, fp);
1420 n += dump_tree (fp, lk->sym);
1421 putc (']', fp);
1422 }
1423
1424 putc (')', fp);
1425
1426 dump_members (fp, root->vars);
1427 n += dump_members (fp, root->fns);
1428 dump_members (fp, root->static_vars);
1429 n += dump_members (fp, root->static_fns);
1430 n += dump_members (fp, root->friends);
1431 dump_members (fp, root->types);
1432
1433 /* Superclasses. */
1434 putc ('(', fp);
1435 putc (')', fp);
1436
1437 /* Mark slot. */
1438 putc ('(', fp);
1439 putc (')', fp);
1440
1441 putc ('\n', fp);
1442 return n;
1443 }
1444
1445
1446 /* Dump the entire class tree to file FP. */
1447
1448 void
1449 dump_roots (fp)
1450 FILE *fp;
1451 {
1452 int i, n = 0;
1453 struct sym *r;
1454
1455 /* Output file header containing version string, command line
1456 options etc. */
1457 if (!f_append)
1458 {
1459 fputs (TREE_HEADER_STRUCT, fp);
1460 PUTSTR (EBROWSE_FILE_VERSION, fp);
1461
1462 putc ('\"', fp);
1463 if (!f_structs)
1464 fputs (" -s", fp);
1465 if (f_regexps)
1466 fputs (" -x", fp);
1467 putc ('\"', fp);
1468 fputs (" ()", fp);
1469 fputs (" ()", fp);
1470 putc (']', fp);
1471 }
1472
1473 /* Mark functions as virtual that are so because of functions
1474 declared virtual in base classes. */
1475 mark_inherited_virtual ();
1476
1477 /* Dump the roots of the graph. */
1478 for (i = 0; i < TABLE_SIZE; ++i)
1479 for (r = class_table[i]; r; r = r->next)
1480 if (!r->supers)
1481 {
1482 fputs (TREE_STRUCT, fp);
1483 n += dump_tree (fp, r);
1484 putc (']', fp);
1485 }
1486
1487 if (f_verbose)
1488 putchar ('\n');
1489 }
1490
1491
1492 \f
1493 /***********************************************************************
1494 Scanner
1495 ***********************************************************************/
1496
1497 #ifdef DEBUG
1498 #define INCREMENT_LINENO \
1499 do { \
1500 if (f_very_verbose) \
1501 { \
1502 ++yyline; \
1503 printf ("%d:\n", yyline); \
1504 } \
1505 else \
1506 ++yyline; \
1507 } while (0)
1508 #else
1509 #define INCREMENT_LINENO ++yyline
1510 #endif
1511
1512 /* Define two macros for accessing the input buffer (current input
1513 file). GET(C) sets C to the next input character and advances the
1514 input pointer. UNGET retracts the input pointer. */
1515
1516 #define GET(C) ((C) = *in++)
1517 #define UNGET() (--in)
1518
1519
1520 /* Process a preprocessor line. Value is the next character from the
1521 input buffer not consumed. */
1522
1523 int
1524 process_pp_line ()
1525 {
1526 int in_comment = 0, in_string = 0;
1527 int c;
1528 char *p = yytext;
1529
1530 /* Skip over white space. The `#' has been consumed already. */
1531 while (WHITEP (GET (c)))
1532 ;
1533
1534 /* Read the preprocessor command (if any). */
1535 while (IDENTP (c))
1536 {
1537 *p++ = c;
1538 GET (c);
1539 }
1540
1541 /* Is it a `define'? */
1542 *p = '\0';
1543
1544 if (*yytext && streq (yytext, "define"))
1545 {
1546 p = yytext;
1547 while (WHITEP (c))
1548 GET (c);
1549 while (IDENTP (c))
1550 {
1551 *p++ = c;
1552 GET (c);
1553 }
1554
1555 *p = '\0';
1556
1557 if (*yytext)
1558 {
1559 char *regexp = matching_regexp ();
1560 int pos = BUFFER_POS ();
1561 add_define (yytext, regexp, pos);
1562 }
1563 }
1564
1565 while (c && (c != '\n' || in_comment || in_string))
1566 {
1567 if (c == '\\')
1568 GET (c);
1569 else if (c == '/' && !in_comment)
1570 {
1571 if (GET (c) == '*')
1572 in_comment = 1;
1573 }
1574 else if (c == '*' && in_comment)
1575 {
1576 if (GET (c) == '/')
1577 in_comment = 0;
1578 }
1579 else if (c == '"')
1580 in_string = !in_string;
1581
1582 if (c == '\n')
1583 INCREMENT_LINENO;
1584
1585 GET (c);
1586 }
1587
1588 return c;
1589 }
1590
1591
1592 /* Value is the next token from the input buffer. */
1593
1594 int
1595 yylex ()
1596 {
1597 int c;
1598 char end_char;
1599 char *p;
1600
1601 for (;;)
1602 {
1603 while (WHITEP (GET (c)))
1604 ;
1605
1606 switch (c)
1607 {
1608 case '\n':
1609 INCREMENT_LINENO;
1610 break;
1611
1612 case '\r':
1613 break;
1614
1615 case 0:
1616 /* End of file. */
1617 return YYEOF;
1618
1619 case '\\':
1620 GET (c);
1621 break;
1622
1623 case '"':
1624 case '\'':
1625 /* String and character constants. */
1626 end_char = c;
1627 string_start = in;
1628 while (GET (c) && c != end_char)
1629 {
1630 switch (c)
1631 {
1632 case '\\':
1633 /* Escape sequences. */
1634 if (!GET (c))
1635 {
1636 if (end_char == '\'')
1637 yyerror ("EOF in character constant", NULL);
1638 else
1639 yyerror ("EOF in string constant", NULL);
1640 goto end_string;
1641 }
1642 else switch (c)
1643 {
1644 case '\n':
1645 INCREMENT_LINENO;
1646 case 'a':
1647 case 'b':
1648 case 'f':
1649 case 'n':
1650 case 'r':
1651 case 't':
1652 case 'v':
1653 break;
1654
1655 case 'x':
1656 {
1657 /* Hexadecimal escape sequence. */
1658 int i;
1659 for (i = 0; i < 2; ++i)
1660 {
1661 GET (c);
1662
1663 if (c >= '0' && c <= '7')
1664 ;
1665 else if (c >= 'a' && c <= 'f')
1666 ;
1667 else if (c >= 'A' && c <= 'F')
1668 ;
1669 else
1670 {
1671 UNGET ();
1672 break;
1673 }
1674 }
1675 }
1676 break;
1677
1678 case '0':
1679 {
1680 /* Octal escape sequence. */
1681 int i;
1682 for (i = 0; i < 3; ++i)
1683 {
1684 GET (c);
1685
1686 if (c >= '0' && c <= '7')
1687 ;
1688 else
1689 {
1690 UNGET ();
1691 break;
1692 }
1693 }
1694 }
1695 break;
1696
1697 default:
1698 break;
1699 }
1700 break;
1701
1702 case '\n':
1703 if (end_char == '\'')
1704 yyerror ("newline in character constant", NULL);
1705 else
1706 yyerror ("newline in string constant", NULL);
1707 INCREMENT_LINENO;
1708 break;
1709
1710 default:
1711 break;
1712 }
1713 }
1714
1715 end_string:
1716 return end_char == '\'' ? CCHAR : CSTRING;
1717
1718 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
1719 case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
1720 case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
1721 case 'v': case 'w': case 'x': case 'y': case 'z':
1722 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
1723 case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
1724 case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
1725 case 'V': case 'W': case 'X': case 'Y': case 'Z': case '_':
1726 {
1727 /* Identifier and keywords. */
1728 unsigned hash;
1729 struct kw *k;
1730
1731 p = yytext;
1732 *p++ = hash = c;
1733
1734 while (IDENTP (GET (*p)))
1735 {
1736 hash = (hash << 1) ^ *p++;
1737 if (p == yytext_end - 1)
1738 {
1739 int size = yytext_end - yytext;
1740 yytext = (char *) xrealloc (yytext, 2 * size);
1741 yytext_end = yytext + 2 * size;
1742 p = yytext + size - 1;
1743 }
1744 }
1745
1746 UNGET ();
1747 *p = 0;
1748
1749 for (k = keyword_table[hash % KEYWORD_TABLE_SIZE]; k; k = k->next)
1750 if (streq (k->name, yytext))
1751 return k->tk;
1752
1753 return IDENT;
1754 }
1755
1756 case '/':
1757 /* C and C++ comments, '/' and '/='. */
1758 switch (GET (c))
1759 {
1760 case '*':
1761 while (GET (c))
1762 {
1763 switch (c)
1764 {
1765 case '*':
1766 if (GET (c) == '/')
1767 goto comment_end;
1768 UNGET ();
1769 break;
1770 case '\\':
1771 GET (c);
1772 break;
1773 case '\n':
1774 INCREMENT_LINENO;
1775 break;
1776 }
1777 }
1778 comment_end:;
1779 break;
1780
1781 case '=':
1782 return DIVASGN;
1783
1784 case '/':
1785 while (GET (c) && c != '\n')
1786 ;
1787 INCREMENT_LINENO;
1788 break;
1789
1790 default:
1791 UNGET ();
1792 return '/';
1793 }
1794 break;
1795
1796 case '+':
1797 if (GET (c) == '+')
1798 return INC;
1799 else if (c == '=')
1800 return ADDASGN;
1801 UNGET ();
1802 return '+';
1803
1804 case '-':
1805 switch (GET (c))
1806 {
1807 case '-':
1808 return DEC;
1809 case '>':
1810 if (GET (c) == '*')
1811 return ARROWSTAR;
1812 UNGET ();
1813 return ARROW;
1814 case '=':
1815 return SUBASGN;
1816 }
1817 UNGET ();
1818 return '-';
1819
1820 case '*':
1821 if (GET (c) == '=')
1822 return MULASGN;
1823 UNGET ();
1824 return '*';
1825
1826 case '%':
1827 if (GET (c) == '=')
1828 return MODASGN;
1829 UNGET ();
1830 return '%';
1831
1832 case '|':
1833 if (GET (c) == '|')
1834 return LOR;
1835 else if (c == '=')
1836 return ORASGN;
1837 UNGET ();
1838 return '|';
1839
1840 case '&':
1841 if (GET (c) == '&')
1842 return LAND;
1843 else if (c == '=')
1844 return ANDASGN;
1845 UNGET ();
1846 return '&';
1847
1848 case '^':
1849 if (GET (c) == '=')
1850 return XORASGN;
1851 UNGET ();
1852 return '^';
1853
1854 case '.':
1855 if (GET (c) == '*')
1856 return POINTSTAR;
1857 else if (c == '.')
1858 {
1859 if (GET (c) != '.')
1860 yyerror ("invalid token '..' ('...' assumed)", NULL);
1861 UNGET ();
1862 return ELLIPSIS;
1863 }
1864 else if (!DIGITP (c))
1865 {
1866 UNGET ();
1867 return '.';
1868 }
1869 goto mantissa;
1870
1871 case ':':
1872 if (GET (c) == ':')
1873 return DCOLON;
1874 UNGET ();
1875 return ':';
1876
1877 case '=':
1878 if (GET (c) == '=')
1879 return EQ;
1880 UNGET ();
1881 return '=';
1882
1883 case '!':
1884 if (GET (c) == '=')
1885 return NE;
1886 UNGET ();
1887 return '!';
1888
1889 case '<':
1890 switch (GET (c))
1891 {
1892 case '=':
1893 return LE;
1894 case '<':
1895 if (GET (c) == '=')
1896 return LSHIFTASGN;
1897 UNGET ();
1898 return LSHIFT;
1899 }
1900 UNGET ();
1901 return '<';
1902
1903 case '>':
1904 switch (GET (c))
1905 {
1906 case '=':
1907 return GE;
1908 case '>':
1909 if (GET (c) == '=')
1910 return RSHIFTASGN;
1911 UNGET ();
1912 return RSHIFT;
1913 }
1914 UNGET ();
1915 return '>';
1916
1917 case '#':
1918 c = process_pp_line ();
1919 if (c == 0)
1920 return YYEOF;
1921 break;
1922
1923 case '(': case ')': case '[': case ']': case '{': case '}':
1924 case ';': case ',': case '?': case '~':
1925 return c;
1926
1927 case '0':
1928 yyival = 0;
1929
1930 if (GET (c) == 'x' || c == 'X')
1931 {
1932 while (GET (c))
1933 {
1934 if (DIGITP (c))
1935 yyival = yyival * 16 + c - '0';
1936 else if (c >= 'a' && c <= 'f')
1937 yyival = yyival * 16 + c - 'a' + 10;
1938 else if (c >= 'A' && c <= 'F')
1939 yyival = yyival * 16 + c - 'A' + 10;
1940 else
1941 break;
1942 }
1943
1944 goto int_suffixes;
1945 }
1946 else if (c == '.')
1947 goto mantissa;
1948
1949 while (c >= '0' && c <= '7')
1950 {
1951 yyival = (yyival << 3) + c - '0';
1952 GET (c);
1953 }
1954
1955 int_suffixes:
1956 /* Integer suffixes. */
1957 while (isalpha (c))
1958 GET (c);
1959 UNGET ();
1960 return CINT;
1961
1962 case '1': case '2': case '3': case '4': case '5': case '6':
1963 case '7': case '8': case '9':
1964 /* Integer or floating constant, part before '.'. */
1965 yyival = c - '0';
1966
1967 while (GET (c) && DIGITP (c))
1968 yyival = 10 * yyival + c - '0';
1969
1970 if (c != '.')
1971 goto int_suffixes;
1972
1973 mantissa:
1974 /* Digits following '.'. */
1975 while (DIGITP (c))
1976 GET (c);
1977
1978 /* Optional exponent. */
1979 if (c == 'E' || c == 'e')
1980 {
1981 if (GET (c) == '-' || c == '+')
1982 GET (c);
1983
1984 while (DIGITP (c))
1985 GET (c);
1986 }
1987
1988 /* Optional type suffixes. */
1989 while (isalpha (c))
1990 GET (c);
1991 UNGET ();
1992 return CFLOAT;
1993
1994 default:
1995 break;
1996 }
1997 }
1998 }
1999
2000
2001 /* Actually local to matching_regexp. These variables must be in
2002 global scope for the case that `static' get's defined away. */
2003
2004 static char *matching_regexp_buffer, *matching_regexp_end_buf;
2005
2006
2007 /* Value is the string from the start of the line to the current
2008 position in the input buffer, or maybe a bit more if that string is
2009 shorter than min_regexp. */
2010
2011 char *
2012 matching_regexp ()
2013 {
2014 char *p;
2015 char *s;
2016 char *t;
2017
2018 if (!f_regexps)
2019 return NULL;
2020
2021 if (matching_regexp_buffer == NULL)
2022 {
2023 matching_regexp_buffer = (char *) xmalloc (max_regexp);
2024 matching_regexp_end_buf = &matching_regexp_buffer[max_regexp] - 1;
2025 }
2026
2027 /* Scan back to previous newline of buffer start. */
2028 for (p = in - 1; p > inbuffer && *p != '\n'; --p)
2029 ;
2030
2031 if (*p == '\n')
2032 {
2033 while (in - p < min_regexp && p > inbuffer)
2034 {
2035 /* Line probably not significant enough */
2036 for (--p; p > inbuffer && *p != '\n'; --p)
2037 ;
2038 }
2039 if (*p == '\n')
2040 ++p;
2041 }
2042
2043 /* Copy from end to make sure significant portions are included.
2044 This implies that in the browser a regular expressing of the form
2045 `^.*{regexp}' has to be used. */
2046 for (s = matching_regexp_end_buf - 1, t = in;
2047 s > matching_regexp_buffer && t > p;)
2048 {
2049 *--s = *--t;
2050
2051 if (*s == '"' || *s == '\\')
2052 *--s = '\\';
2053 }
2054
2055 *(matching_regexp_end_buf - 1) = '\0';
2056 return xstrdup (s);
2057 }
2058
2059
2060 /* Return a printable representation of token T. */
2061
2062 char *
2063 token_string (t)
2064 int t;
2065 {
2066 static char b[3];
2067
2068 switch (t)
2069 {
2070 case CSTRING: return "string constant";
2071 case CCHAR: return "char constant";
2072 case CINT: return "int constant";
2073 case CFLOAT: return "floating constant";
2074 case ELLIPSIS: return "...";
2075 case LSHIFTASGN: return "<<=";
2076 case RSHIFTASGN: return ">>=";
2077 case ARROWSTAR: return "->*";
2078 case IDENT: return "identifier";
2079 case DIVASGN: return "/=";
2080 case INC: return "++";
2081 case ADDASGN: return "+=";
2082 case DEC: return "--";
2083 case ARROW: return "->";
2084 case SUBASGN: return "-=";
2085 case MULASGN: return "*=";
2086 case MODASGN: return "%=";
2087 case LOR: return "||";
2088 case ORASGN: return "|=";
2089 case LAND: return "&&";
2090 case ANDASGN: return "&=";
2091 case XORASGN: return "^=";
2092 case POINTSTAR: return ".*";
2093 case DCOLON: return "::";
2094 case EQ: return "==";
2095 case NE: return "!=";
2096 case LE: return "<=";
2097 case LSHIFT: return "<<";
2098 case GE: return ">=";
2099 case RSHIFT: return ">>";
2100 case ASM: return "asm";
2101 case AUTO: return "auto";
2102 case BREAK: return "break";
2103 case CASE: return "case";
2104 case CATCH: return "catch";
2105 case CHAR: return "char";
2106 case CLASS: return "class";
2107 case CONST: return "const";
2108 case CONTINUE: return "continue";
2109 case DEFAULT: return "default";
2110 case DELETE: return "delete";
2111 case DO: return "do";
2112 case DOUBLE: return "double";
2113 case ELSE: return "else";
2114 case ENUM: return "enum";
2115 case EXTERN: return "extern";
2116 case FLOAT: return "float";
2117 case FOR: return "for";
2118 case FRIEND: return "friend";
2119 case GOTO: return "goto";
2120 case IF: return "if";
2121 case T_INLINE: return "inline";
2122 case INT: return "int";
2123 case LONG: return "long";
2124 case NEW: return "new";
2125 case OPERATOR: return "operator";
2126 case PRIVATE: return "private";
2127 case PROTECTED: return "protected";
2128 case PUBLIC: return "public";
2129 case REGISTER: return "register";
2130 case RETURN: return "return";
2131 case SHORT: return "short";
2132 case SIGNED: return "signed";
2133 case SIZEOF: return "sizeof";
2134 case STATIC: return "static";
2135 case STRUCT: return "struct";
2136 case SWITCH: return "switch";
2137 case TEMPLATE: return "template";
2138 case THIS: return "this";
2139 case THROW: return "throw";
2140 case TRY: return "try";
2141 case TYPEDEF: return "typedef";
2142 case UNION: return "union";
2143 case UNSIGNED: return "unsigned";
2144 case VIRTUAL: return "virtual";
2145 case VOID: return "void";
2146 case VOLATILE: return "volatile";
2147 case WHILE: return "while";
2148 case MUTABLE: return "mutable";
2149 case BOOL: return "bool";
2150 case TRUE: return "true";
2151 case FALSE: return "false";
2152 case SIGNATURE: return "signature";
2153 case NAMESPACE: return "namespace";
2154 case EXPLICIT: return "explicit";
2155 case TYPENAME: return "typename";
2156 case CONST_CAST: return "const_cast";
2157 case DYNAMIC_CAST: return "dynamic_cast";
2158 case REINTERPRET_CAST: return "reinterpret_cast";
2159 case STATIC_CAST: return "static_cast";
2160 case TYPEID: return "typeid";
2161 case USING: return "using";
2162 case WCHAR: return "wchar_t";
2163 case YYEOF: return "EOF";
2164
2165 default:
2166 if (t < 255)
2167 {
2168 b[0] = t;
2169 b[1] = '\0';
2170 return b;
2171 }
2172 else
2173 return "???";
2174 }
2175 }
2176
2177
2178 /* Reinitialize the scanner for a new input file. */
2179
2180 void
2181 re_init_scanner ()
2182 {
2183 in = inbuffer;
2184 yyline = 1;
2185
2186 if (yytext == NULL)
2187 {
2188 int size = 256;
2189 yytext = (char *) xmalloc (size * sizeof *yytext);
2190 yytext_end = yytext + size;
2191 }
2192 }
2193
2194
2195 /* Insert a keyword NAME with token value TK into the keyword hash
2196 table. */
2197
2198 void
2199 insert_keyword (name, tk)
2200 char *name;
2201 int tk;
2202 {
2203 char *s;
2204 unsigned h = 0;
2205 struct kw *k = (struct kw *) xmalloc (sizeof *k);
2206
2207 for (s = name; *s; ++s)
2208 h = (h << 1) ^ *s;
2209
2210 h %= KEYWORD_TABLE_SIZE;
2211 k->name = name;
2212 k->tk = tk;
2213 k->next = keyword_table[h];
2214 keyword_table[h] = k;
2215 }
2216
2217
2218 /* Initialize the scanner for the first file. This sets up the
2219 character class vectors and fills the keyword hash table. */
2220
2221 void
2222 init_scanner ()
2223 {
2224 int i;
2225
2226 /* Allocate the input buffer */
2227 inbuffer_size = READ_CHUNK_SIZE + 1;
2228 inbuffer = in = (char *) xmalloc (inbuffer_size);
2229 yyline = 1;
2230
2231 /* Set up character class vectors. */
2232 for (i = 0; i < sizeof is_ident; ++i)
2233 {
2234 if (i == '_' || isalnum (i))
2235 is_ident[i] = 1;
2236
2237 if (i >= '0' && i <= '9')
2238 is_digit[i] = 1;
2239
2240 if (i == ' ' || i == '\t' || i == '\f' || i == '\v')
2241 is_white[i] = 1;
2242 }
2243
2244 /* Fill keyword hash table. */
2245 insert_keyword ("and", LAND);
2246 insert_keyword ("and_eq", ANDASGN);
2247 insert_keyword ("asm", ASM);
2248 insert_keyword ("auto", AUTO);
2249 insert_keyword ("bitand", '&');
2250 insert_keyword ("bitor", '|');
2251 insert_keyword ("bool", BOOL);
2252 insert_keyword ("break", BREAK);
2253 insert_keyword ("case", CASE);
2254 insert_keyword ("catch", CATCH);
2255 insert_keyword ("char", CHAR);
2256 insert_keyword ("class", CLASS);
2257 insert_keyword ("compl", '~');
2258 insert_keyword ("const", CONST);
2259 insert_keyword ("const_cast", CONST_CAST);
2260 insert_keyword ("continue", CONTINUE);
2261 insert_keyword ("default", DEFAULT);
2262 insert_keyword ("delete", DELETE);
2263 insert_keyword ("do", DO);
2264 insert_keyword ("double", DOUBLE);
2265 insert_keyword ("dynamic_cast", DYNAMIC_CAST);
2266 insert_keyword ("else", ELSE);
2267 insert_keyword ("enum", ENUM);
2268 insert_keyword ("explicit", EXPLICIT);
2269 insert_keyword ("extern", EXTERN);
2270 insert_keyword ("false", FALSE);
2271 insert_keyword ("float", FLOAT);
2272 insert_keyword ("for", FOR);
2273 insert_keyword ("friend", FRIEND);
2274 insert_keyword ("goto", GOTO);
2275 insert_keyword ("if", IF);
2276 insert_keyword ("inline", T_INLINE);
2277 insert_keyword ("int", INT);
2278 insert_keyword ("long", LONG);
2279 insert_keyword ("mutable", MUTABLE);
2280 insert_keyword ("namespace", NAMESPACE);
2281 insert_keyword ("new", NEW);
2282 insert_keyword ("not", '!');
2283 insert_keyword ("not_eq", NE);
2284 insert_keyword ("operator", OPERATOR);
2285 insert_keyword ("or", LOR);
2286 insert_keyword ("or_eq", ORASGN);
2287 insert_keyword ("private", PRIVATE);
2288 insert_keyword ("protected", PROTECTED);
2289 insert_keyword ("public", PUBLIC);
2290 insert_keyword ("register", REGISTER);
2291 insert_keyword ("reinterpret_cast", REINTERPRET_CAST);
2292 insert_keyword ("return", RETURN);
2293 insert_keyword ("short", SHORT);
2294 insert_keyword ("signed", SIGNED);
2295 insert_keyword ("sizeof", SIZEOF);
2296 insert_keyword ("static", STATIC);
2297 insert_keyword ("static_cast", STATIC_CAST);
2298 insert_keyword ("struct", STRUCT);
2299 insert_keyword ("switch", SWITCH);
2300 insert_keyword ("template", TEMPLATE);
2301 insert_keyword ("this", THIS);
2302 insert_keyword ("throw", THROW);
2303 insert_keyword ("true", TRUE);
2304 insert_keyword ("try", TRY);
2305 insert_keyword ("typedef", TYPEDEF);
2306 insert_keyword ("typeid", TYPEID);
2307 insert_keyword ("typename", TYPENAME);
2308 insert_keyword ("union", UNION);
2309 insert_keyword ("unsigned", UNSIGNED);
2310 insert_keyword ("using", USING);
2311 insert_keyword ("virtual", VIRTUAL);
2312 insert_keyword ("void", VOID);
2313 insert_keyword ("volatile", VOLATILE);
2314 insert_keyword ("wchar_t", WCHAR);
2315 insert_keyword ("while", WHILE);
2316 insert_keyword ("xor", '^');
2317 insert_keyword ("xor_eq", XORASGN);
2318 }
2319
2320
2321 \f
2322 /***********************************************************************
2323 Parser
2324 ***********************************************************************/
2325
2326 /* Match the current lookahead token and set it to the next token. */
2327
2328 #define MATCH() (tk = yylex ())
2329
2330 /* Return the lookahead token. If current lookahead token is cleared,
2331 read a new token. */
2332
2333 #define LA1 (tk == -1 ? (tk = yylex ()) : tk)
2334
2335 /* Is the current lookahead equal to the token T? */
2336
2337 #define LOOKING_AT(T) (tk == (T))
2338
2339 /* Is the current lookahead one of T1 or T2? */
2340
2341 #define LOOKING_AT2(T1, T2) (tk == (T1) || tk == (T2))
2342
2343 /* Is the current lookahead one of T1, T2 or T3? */
2344
2345 #define LOOKING_AT3(T1, T2, T3) (tk == (T1) || tk == (T2) || tk == (T3))
2346
2347 /* Is the current lookahead one of T1...T4? */
2348
2349 #define LOOKING_AT4(T1, T2, T3, T4) \
2350 (tk == (T1) || tk == (T2) || tk == (T3) || tk == (T4))
2351
2352 /* Match token T if current lookahead is T. */
2353
2354 #define MATCH_IF(T) if (LOOKING_AT (T)) MATCH (); else ((void) 0)
2355
2356 /* Skip to matching token if current token is T. */
2357
2358 #define SKIP_MATCHING_IF(T) \
2359 if (LOOKING_AT (T)) skip_matching (); else ((void) 0)
2360
2361
2362 /* Skip forward until a given token TOKEN or YYEOF is seen and return
2363 the current lookahead token after skipping. */
2364
2365 int
2366 skip_to (token)
2367 int token;
2368 {
2369 while (!LOOKING_AT2 (YYEOF, token))
2370 MATCH ();
2371 return tk;
2372 }
2373
2374 /* Skip over pairs of tokens (parentheses, square brackets,
2375 angle brackets, curly brackets) matching the current lookahead. */
2376
2377 void
2378 skip_matching ()
2379 {
2380 int open, close, n;
2381
2382 switch (open = LA1)
2383 {
2384 case '{':
2385 close = '}';
2386 break;
2387
2388 case '(':
2389 close = ')';
2390 break;
2391
2392 case '<':
2393 close = '>';
2394 break;
2395
2396 case '[':
2397 close = ']';
2398 break;
2399
2400 default:
2401 abort ();
2402 }
2403
2404 for (n = 0;;)
2405 {
2406 if (LOOKING_AT (open))
2407 ++n;
2408 else if (LOOKING_AT (close))
2409 --n;
2410 else if (LOOKING_AT (YYEOF))
2411 break;
2412
2413 MATCH ();
2414
2415 if (n == 0)
2416 break;
2417 }
2418 }
2419
2420 void
2421 skip_initializer ()
2422 {
2423 for (;;)
2424 {
2425 switch (LA1)
2426 {
2427 case ';':
2428 case ',':
2429 case YYEOF:
2430 return;
2431
2432 case '{':
2433 case '[':
2434 case '(':
2435 skip_matching ();
2436 break;
2437
2438 default:
2439 MATCH ();
2440 break;
2441 }
2442 }
2443 }
2444
2445 /* Build qualified namespace alias (A::B::c) and return it. */
2446
2447 struct link *
2448 match_qualified_namespace_alias ()
2449 {
2450 struct link *head = NULL;
2451 struct link *cur = NULL;
2452 struct link *tmp = NULL;
2453
2454 for (;;)
2455 {
2456 MATCH ();
2457 switch (LA1)
2458 {
2459 case IDENT:
2460 tmp = (struct link *) xmalloc (sizeof *cur);
2461 tmp->sym = find_namespace (yytext, cur);
2462 tmp->next = NULL;
2463 if (head)
2464 {
2465 cur = cur->next = tmp;
2466 }
2467 else
2468 {
2469 head = cur = tmp;
2470 }
2471 break;
2472 case DCOLON:
2473 /* Just skip */
2474 break;
2475 default:
2476 return head;
2477 break;
2478 }
2479 }
2480 }
2481
2482 /* Re-initialize the parser by resetting the lookahead token. */
2483
2484 void
2485 re_init_parser ()
2486 {
2487 tk = -1;
2488 }
2489
2490
2491 /* Parse a parameter list, including the const-specifier,
2492 pure-specifier, and throw-list that may follow a parameter list.
2493 Return in FLAGS what was seen following the parameter list.
2494 Returns a hash code for the parameter types. This value is used to
2495 distinguish between overloaded functions. */
2496
2497 unsigned
2498 parm_list (flags)
2499 int *flags;
2500 {
2501 unsigned hash = 0;
2502 int type_seen = 0;
2503
2504 while (!LOOKING_AT2 (YYEOF, ')'))
2505 {
2506 switch (LA1)
2507 {
2508 /* Skip over grouping parens or parameter lists in parameter
2509 declarations. */
2510 case '(':
2511 skip_matching ();
2512 break;
2513
2514 /* Next parameter. */
2515 case ',':
2516 MATCH ();
2517 type_seen = 0;
2518 break;
2519
2520 /* Ignore the scope part of types, if any. This is because
2521 some types need scopes when defined outside of a class body,
2522 and don't need them inside the class body. This means that
2523 we have to look for the last IDENT in a sequence of
2524 IDENT::IDENT::... */
2525 case IDENT:
2526 if (!type_seen)
2527 {
2528 char *last_id;
2529 unsigned ident_type_hash = 0;
2530
2531 parse_qualified_param_ident_or_type (&last_id);
2532 if (last_id)
2533 {
2534 /* LAST_ID null means something like `X::*'. */
2535 for (; *last_id; ++last_id)
2536 ident_type_hash = (ident_type_hash << 1) ^ *last_id;
2537 hash = (hash << 1) ^ ident_type_hash;
2538 type_seen = 1;
2539 }
2540 }
2541 else
2542 MATCH ();
2543 break;
2544
2545 case VOID:
2546 /* This distinction is made to make `func (void)' equivalent
2547 to `func ()'. */
2548 type_seen = 1;
2549 MATCH ();
2550 if (!LOOKING_AT (')'))
2551 hash = (hash << 1) ^ VOID;
2552 break;
2553
2554 case BOOL: case CHAR: case CLASS: case CONST:
2555 case DOUBLE: case ENUM: case FLOAT: case INT:
2556 case LONG: case SHORT: case SIGNED: case STRUCT:
2557 case UNION: case UNSIGNED: case VOLATILE: case WCHAR:
2558 case ELLIPSIS:
2559 type_seen = 1;
2560 hash = (hash << 1) ^ LA1;
2561 MATCH ();
2562 break;
2563
2564 case '*': case '&': case '[': case ']':
2565 hash = (hash << 1) ^ LA1;
2566 MATCH ();
2567 break;
2568
2569 default:
2570 MATCH ();
2571 break;
2572 }
2573 }
2574
2575 if (LOOKING_AT (')'))
2576 {
2577 MATCH ();
2578
2579 if (LOOKING_AT (CONST))
2580 {
2581 /* We can overload the same function on `const' */
2582 hash = (hash << 1) ^ CONST;
2583 SET_FLAG (*flags, F_CONST);
2584 MATCH ();
2585 }
2586
2587 if (LOOKING_AT (THROW))
2588 {
2589 MATCH ();
2590 SKIP_MATCHING_IF ('(');
2591 SET_FLAG (*flags, F_THROW);
2592 }
2593
2594 if (LOOKING_AT ('='))
2595 {
2596 MATCH ();
2597 if (LOOKING_AT (CINT) && yyival == 0)
2598 {
2599 MATCH ();
2600 SET_FLAG (*flags, F_PURE);
2601 }
2602 }
2603 }
2604
2605 return hash;
2606 }
2607
2608
2609 /* Print position info to stdout. */
2610
2611 void
2612 print_info ()
2613 {
2614 if (info_position >= 0 && BUFFER_POS () <= info_position)
2615 if (info_cls)
2616 printf ("(\"%s\" \"%s\" \"%s\" %d)\n",
2617 info_cls->name, sym_scope (info_cls),
2618 info_member->name, info_where);
2619 }
2620
2621
2622 /* Parse a member declaration within the class body of CLS. VIS is
2623 the access specifier for the member (private, protected,
2624 public). */
2625
2626 void
2627 member (cls, vis)
2628 struct sym *cls;
2629 int vis;
2630 {
2631 char *id = NULL;
2632 int sc = SC_MEMBER;
2633 char *regexp = NULL;
2634 int pos;
2635 int is_constructor;
2636 int anonymous = 0;
2637 int flags = 0;
2638 int class_tag;
2639 int type_seen = 0;
2640 int paren_seen = 0;
2641 unsigned hash = 0;
2642 int tilde = 0;
2643
2644 while (!LOOKING_AT4 (';', '{', '}', YYEOF))
2645 {
2646 switch (LA1)
2647 {
2648 default:
2649 MATCH ();
2650 break;
2651
2652 /* A function or class may follow. */
2653 case TEMPLATE:
2654 MATCH();
2655 SET_FLAG (flags, F_TEMPLATE);
2656 /* Skip over template argument list */
2657 SKIP_MATCHING_IF ('<');
2658 break;
2659
2660 case EXPLICIT:
2661 SET_FLAG (flags, F_EXPLICIT);
2662 goto typeseen;
2663
2664 case MUTABLE:
2665 SET_FLAG (flags, F_MUTABLE);
2666 goto typeseen;
2667
2668 case T_INLINE:
2669 SET_FLAG (flags, F_INLINE);
2670 goto typeseen;
2671
2672 case VIRTUAL:
2673 SET_FLAG (flags, F_VIRTUAL);
2674 goto typeseen;
2675
2676 case '[':
2677 skip_matching ();
2678 break;
2679
2680 case ENUM:
2681 sc = SC_TYPE;
2682 goto typeseen;
2683
2684 case TYPEDEF:
2685 sc = SC_TYPE;
2686 goto typeseen;
2687
2688 case FRIEND:
2689 sc = SC_FRIEND;
2690 goto typeseen;
2691
2692 case STATIC:
2693 sc = SC_STATIC;
2694 goto typeseen;
2695
2696 case '~':
2697 tilde = 1;
2698 MATCH ();
2699 break;
2700
2701 case IDENT:
2702 /* Remember IDENTS seen so far. Among these will be the member
2703 name. */
2704 id = (char *) xrealloc (id, strlen (yytext) + 2);
2705 if (tilde)
2706 {
2707 *id = '~';
2708 strcpy (id + 1, yytext);
2709 }
2710 else
2711 strcpy (id, yytext);
2712 MATCH ();
2713 break;
2714
2715 case OPERATOR:
2716 {
2717 char *s = operator_name (&sc);
2718 id = (char *) xrealloc (id, strlen (s) + 1);
2719 strcpy (id, s);
2720 }
2721 break;
2722
2723 case '(':
2724 /* Most probably the beginning of a parameter list. */
2725 MATCH ();
2726 paren_seen = 1;
2727
2728 if (id && cls)
2729 {
2730 if (!(is_constructor = streq (id, cls->name)))
2731 regexp = matching_regexp ();
2732 }
2733 else
2734 is_constructor = 0;
2735
2736 pos = BUFFER_POS ();
2737 hash = parm_list (&flags);
2738
2739 if (is_constructor)
2740 regexp = matching_regexp ();
2741
2742 if (id && cls != NULL)
2743 add_member_decl (cls, id, regexp, pos, hash, 0, sc, vis, flags);
2744
2745 while (!LOOKING_AT3 (';', '{', YYEOF))
2746 MATCH ();
2747
2748 if (LOOKING_AT ('{') && id && cls)
2749 add_member_defn (cls, id, regexp, pos, hash, 0, sc, flags);
2750
2751 free (id);
2752 id = NULL;
2753 sc = SC_MEMBER;
2754 break;
2755
2756 case STRUCT: case UNION: case CLASS:
2757 /* Nested class */
2758 class_tag = LA1;
2759 type_seen = 1;
2760 MATCH ();
2761 anonymous = 1;
2762
2763 /* More than one ident here to allow for MS-DOS specialties
2764 like `_export class' etc. The last IDENT seen counts
2765 as the class name. */
2766 while (!LOOKING_AT4 (YYEOF, ';', ':', '{'))
2767 {
2768 if (LOOKING_AT (IDENT))
2769 anonymous = 0;
2770 MATCH ();
2771 }
2772
2773 if (LOOKING_AT2 (':', '{'))
2774 class_definition (anonymous ? NULL : cls, class_tag, flags, 1);
2775 else
2776 skip_to (';');
2777 break;
2778
2779 case INT: case CHAR: case LONG: case UNSIGNED:
2780 case SIGNED: case CONST: case DOUBLE: case VOID:
2781 case SHORT: case VOLATILE: case BOOL: case WCHAR:
2782 case TYPENAME:
2783 typeseen:
2784 type_seen = 1;
2785 MATCH ();
2786 break;
2787 }
2788 }
2789
2790 if (LOOKING_AT (';'))
2791 {
2792 /* The end of a member variable, a friend declaration or an access
2793 declaration. We don't want to add friend classes as members. */
2794 if (id && sc != SC_FRIEND && cls)
2795 {
2796 regexp = matching_regexp ();
2797 pos = BUFFER_POS ();
2798
2799 if (cls != NULL)
2800 {
2801 if (type_seen || !paren_seen)
2802 add_member_decl (cls, id, regexp, pos, 0, 1, sc, vis, 0);
2803 else
2804 add_member_decl (cls, id, regexp, pos, hash, 0, sc, vis, 0);
2805 }
2806 }
2807
2808 MATCH ();
2809 print_info ();
2810 }
2811 else if (LOOKING_AT ('{'))
2812 {
2813 /* A named enum. */
2814 if (sc == SC_TYPE && id && cls)
2815 {
2816 regexp = matching_regexp ();
2817 pos = BUFFER_POS ();
2818
2819 if (cls != NULL)
2820 {
2821 add_member_decl (cls, id, regexp, pos, 0, 1, sc, vis, 0);
2822 add_member_defn (cls, id, regexp, pos, 0, 1, sc, 0);
2823 }
2824 }
2825
2826 skip_matching ();
2827 print_info ();
2828 }
2829
2830 free (id);
2831 }
2832
2833
2834 /* Parse the body of class CLS. TAG is the tag of the class (struct,
2835 union, class). */
2836
2837 void
2838 class_body (cls, tag)
2839 struct sym *cls;
2840 int tag;
2841 {
2842 int vis = tag == CLASS ? PRIVATE : PUBLIC;
2843 int temp;
2844
2845 while (!LOOKING_AT2 (YYEOF, '}'))
2846 {
2847 switch (LA1)
2848 {
2849 case PRIVATE: case PROTECTED: case PUBLIC:
2850 temp = LA1;
2851 MATCH ();
2852
2853 if (LOOKING_AT (':'))
2854 {
2855 vis = temp;
2856 MATCH ();
2857 }
2858 else
2859 {
2860 /* Probably conditional compilation for inheritance list.
2861 We don't known whether there comes more of this.
2862 This is only a crude fix that works most of the time. */
2863 do
2864 {
2865 MATCH ();
2866 }
2867 while (LOOKING_AT2 (IDENT, ',')
2868 || LOOKING_AT3 (PUBLIC, PROTECTED, PRIVATE));
2869 }
2870 break;
2871
2872 case TYPENAME:
2873 case USING:
2874 skip_to (';');
2875 break;
2876
2877 /* Try to synchronize */
2878 case CHAR: case CLASS: case CONST:
2879 case DOUBLE: case ENUM: case FLOAT: case INT:
2880 case LONG: case SHORT: case SIGNED: case STRUCT:
2881 case UNION: case UNSIGNED: case VOID: case VOLATILE:
2882 case TYPEDEF: case STATIC: case T_INLINE: case FRIEND:
2883 case VIRTUAL: case TEMPLATE: case IDENT: case '~':
2884 case BOOL: case WCHAR: case EXPLICIT: case MUTABLE:
2885 member (cls, vis);
2886 break;
2887
2888 default:
2889 MATCH ();
2890 break;
2891 }
2892 }
2893 }
2894
2895
2896 /* Parse a qualified identifier. Current lookahead is IDENT. A
2897 qualified ident has the form `X<..>::Y<...>::T<...>. Returns a
2898 symbol for that class. */
2899
2900 struct sym *
2901 parse_classname ()
2902 {
2903 struct sym *last_class = NULL;
2904
2905 while (LOOKING_AT (IDENT))
2906 {
2907 last_class = add_sym (yytext, last_class);
2908 MATCH ();
2909
2910 if (LOOKING_AT ('<'))
2911 {
2912 skip_matching ();
2913 SET_FLAG (last_class->flags, F_TEMPLATE);
2914 }
2915
2916 if (!LOOKING_AT (DCOLON))
2917 break;
2918
2919 MATCH ();
2920 }
2921
2922 return last_class;
2923 }
2924
2925
2926 /* Parse an operator name. Add the `static' flag to *SC if an
2927 implicitly static operator has been parsed. Value is a pointer to
2928 a static buffer holding the constructed operator name string. */
2929
2930 char *
2931 operator_name (sc)
2932 int *sc;
2933 {
2934 static int id_size = 0;
2935 static char *id = NULL;
2936 char *s;
2937 int len;
2938
2939 MATCH ();
2940
2941 if (LOOKING_AT2 (NEW, DELETE))
2942 {
2943 /* `new' and `delete' are implicitly static. */
2944 if (*sc != SC_FRIEND)
2945 *sc = SC_STATIC;
2946
2947 s = token_string (LA1);
2948 MATCH ();
2949
2950 len = strlen (s) + 10;
2951 if (len > id_size)
2952 {
2953 int new_size = max (len, 2 * id_size);
2954 id = (char *) xrealloc (id, new_size);
2955 id_size = new_size;
2956 }
2957 strcpy (id, s);
2958
2959 /* Vector new or delete? */
2960 if (LOOKING_AT ('['))
2961 {
2962 strcat (id, "[");
2963 MATCH ();
2964
2965 if (LOOKING_AT (']'))
2966 {
2967 strcat (id, "]");
2968 MATCH ();
2969 }
2970 }
2971 }
2972 else
2973 {
2974 int tokens_matched = 0;
2975
2976 len = 20;
2977 if (len > id_size)
2978 {
2979 int new_size = max (len, 2 * id_size);
2980 id = (char *) xrealloc (id, new_size);
2981 id_size = new_size;
2982 }
2983 strcpy (id, "operator");
2984
2985 /* Beware access declarations of the form "X::f;" Beware of
2986 `operator () ()'. Yet another difficulty is found in
2987 GCC 2.95's STL: `operator == __STL_NULL_TMPL_ARGS (...'. */
2988 while (!(LOOKING_AT ('(') && tokens_matched)
2989 && !LOOKING_AT2 (';', YYEOF))
2990 {
2991 s = token_string (LA1);
2992 len += strlen (s) + 2;
2993 if (len > id_size)
2994 {
2995 int new_size = max (len, 2 * id_size);
2996 id = (char *) xrealloc (id, new_size);
2997 id_size = new_size;
2998 }
2999
3000 if (*s != ')' && *s != ']')
3001 strcat (id, " ");
3002 strcat (id, s);
3003 MATCH ();
3004
3005 /* If this is a simple operator like `+', stop now. */
3006 if (!isalpha ((unsigned char) *s) && *s != '(' && *s != '[')
3007 break;
3008
3009 ++tokens_matched;
3010 }
3011 }
3012
3013 return id;
3014 }
3015
3016
3017 /* This one consumes the last IDENT of a qualified member name like
3018 `X::Y::z'. This IDENT is returned in LAST_ID. Value is the
3019 symbol structure for the ident. */
3020
3021 struct sym *
3022 parse_qualified_ident_or_type (last_id)
3023 char **last_id;
3024 {
3025 struct sym *cls = NULL;
3026 char *id = NULL;
3027 size_t id_size = 0;
3028 int enter = 0;
3029
3030 while (LOOKING_AT (IDENT))
3031 {
3032 int len = strlen (yytext) + 1;
3033 if (len > id_size)
3034 {
3035 id = (char *) xrealloc (id, len);
3036 id_size = len;
3037 }
3038 strcpy (id, yytext);
3039 *last_id = id;
3040 MATCH ();
3041
3042 SKIP_MATCHING_IF ('<');
3043
3044 if (LOOKING_AT (DCOLON))
3045 {
3046 struct sym *pcn = NULL;
3047 struct link *pna = check_namespace_alias (id);
3048 if (pna)
3049 {
3050 do
3051 {
3052 enter_namespace (pna->sym->name);
3053 enter++;
3054 pna = pna->next;
3055 }
3056 while (pna);
3057 }
3058 else if ((pcn = check_namespace (id, current_namespace)))
3059 {
3060 enter_namespace (pcn->name);
3061 enter++;
3062 }
3063 else
3064 cls = add_sym (id, cls);
3065
3066 *last_id = NULL;
3067 free (id);
3068 id = NULL;
3069 id_size = 0;
3070 MATCH ();
3071 }
3072 else
3073 break;
3074 }
3075
3076 while (enter--)
3077 leave_namespace();
3078
3079 return cls;
3080 }
3081
3082
3083 /* This one consumes the last IDENT of a qualified member name like
3084 `X::Y::z'. This IDENT is returned in LAST_ID. Value is the
3085 symbol structure for the ident. */
3086
3087 void
3088 parse_qualified_param_ident_or_type (last_id)
3089 char **last_id;
3090 {
3091 struct sym *cls = NULL;
3092 static char *id = NULL;
3093 static int id_size = 0;
3094
3095 while (LOOKING_AT (IDENT))
3096 {
3097 int len = strlen (yytext) + 1;
3098 if (len > id_size)
3099 {
3100 id = (char *) xrealloc (id, len);
3101 id_size = len;
3102 }
3103 strcpy (id, yytext);
3104 *last_id = id;
3105 MATCH ();
3106
3107 SKIP_MATCHING_IF ('<');
3108
3109 if (LOOKING_AT (DCOLON))
3110 {
3111 cls = add_sym (id, cls);
3112 *last_id = NULL;
3113 MATCH ();
3114 }
3115 else
3116 break;
3117 }
3118 }
3119
3120
3121 /* Parse a class definition.
3122
3123 CONTAINING is the class containing the class being parsed or null.
3124 This may also be null if NESTED != 0 if the containing class is
3125 anonymous. TAG is the tag of the class (struct, union, class).
3126 NESTED is non-zero if we are parsing a nested class.
3127
3128 Current lookahead is the class name. */
3129
3130 void
3131 class_definition (containing, tag, flags, nested)
3132 struct sym *containing;
3133 int tag;
3134 int flags;
3135 int nested;
3136 {
3137 struct sym *current;
3138 struct sym *base_class;
3139
3140 /* Set CURRENT to null if no entry has to be made for the class
3141 parsed. This is the case for certain command line flag
3142 settings. */
3143 if ((tag != CLASS && !f_structs) || (nested && !f_nested_classes))
3144 current = NULL;
3145 else
3146 {
3147 current = add_sym (yytext, containing);
3148 current->pos = BUFFER_POS ();
3149 current->regexp = matching_regexp ();
3150 current->filename = filename;
3151 current->flags = flags;
3152 }
3153
3154 /* If at ':', base class list follows. */
3155 if (LOOKING_AT (':'))
3156 {
3157 int done = 0;
3158 MATCH ();
3159
3160 while (!done)
3161 {
3162 switch (LA1)
3163 {
3164 case VIRTUAL: case PUBLIC: case PROTECTED: case PRIVATE:
3165 MATCH ();
3166 break;
3167
3168 case IDENT:
3169 base_class = parse_classname ();
3170 if (base_class && current && base_class != current)
3171 add_link (base_class, current);
3172 break;
3173
3174 /* The `,' between base classes or the end of the base
3175 class list. Add the previously found base class.
3176 It's done this way to skip over sequences of
3177 `A::B::C' until we reach the end.
3178
3179 FIXME: it is now possible to handle `class X : public B::X'
3180 because we have enough information. */
3181 case ',':
3182 MATCH ();
3183 break;
3184
3185 default:
3186 /* A syntax error, possibly due to preprocessor constructs
3187 like
3188
3189 #ifdef SOMETHING
3190 class A : public B
3191 #else
3192 class A : private B.
3193
3194 MATCH until we see something like `;' or `{'. */
3195 while (!LOOKING_AT3 (';', YYEOF, '{'))
3196 MATCH ();
3197 done = 1;
3198
3199 case '{':
3200 done = 1;
3201 break;
3202 }
3203 }
3204 }
3205
3206 /* Parse the class body if there is one. */
3207 if (LOOKING_AT ('{'))
3208 {
3209 if (tag != CLASS && !f_structs)
3210 skip_matching ();
3211 else
3212 {
3213 MATCH ();
3214 class_body (current, tag);
3215
3216 if (LOOKING_AT ('}'))
3217 {
3218 MATCH ();
3219 if (LOOKING_AT (';') && !nested)
3220 MATCH ();
3221 }
3222 }
3223 }
3224 }
3225
3226 /* Add to class *CLS information for the declaration of variable or
3227 type *ID. If *CLS is null, this means a global declaration. SC is
3228 the storage class of *ID. FLAGS is a bit set giving additional
3229 information about the member (see the F_* defines). */
3230
3231 void
3232 add_declarator (cls, id, flags, sc)
3233 struct sym **cls;
3234 char **id;
3235 int flags, sc;
3236 {
3237 if (LOOKING_AT2 (';', ','))
3238 {
3239 /* The end of a member variable or of an access declaration
3240 `X::f'. To distinguish between them we have to know whether
3241 type information has been seen. */
3242 if (*id)
3243 {
3244 char *regexp = matching_regexp ();
3245 int pos = BUFFER_POS ();
3246
3247 if (*cls)
3248 add_member_defn (*cls, *id, regexp, pos, 0, 1, SC_UNKNOWN, flags);
3249 else
3250 add_global_defn (*id, regexp, pos, 0, 1, sc, flags);
3251 }
3252
3253 MATCH ();
3254 print_info ();
3255 }
3256 else if (LOOKING_AT ('{'))
3257 {
3258 if (sc == SC_TYPE && *id)
3259 {
3260 /* A named enumeration. */
3261 char *regexp = matching_regexp ();
3262 int pos = BUFFER_POS ();
3263 add_global_defn (*id, regexp, pos, 0, 1, sc, flags);
3264 }
3265
3266 skip_matching ();
3267 print_info ();
3268 }
3269
3270 free (*id);
3271 *id = NULL;
3272 *cls = NULL;
3273 }
3274
3275 /* Parse a declaration. */
3276
3277 void
3278 declaration (flags)
3279 int flags;
3280 {
3281 char *id = NULL;
3282 struct sym *cls = NULL;
3283 char *regexp = NULL;
3284 int pos = 0;
3285 unsigned hash = 0;
3286 int is_constructor;
3287 int sc = 0;
3288
3289 while (!LOOKING_AT3 (';', '{', YYEOF))
3290 {
3291 switch (LA1)
3292 {
3293 default:
3294 MATCH ();
3295 break;
3296
3297 case '[':
3298 skip_matching ();
3299 break;
3300
3301 case ENUM:
3302 case TYPEDEF:
3303 sc = SC_TYPE;
3304 MATCH ();
3305 break;
3306
3307 case STATIC:
3308 sc = SC_STATIC;
3309 MATCH ();
3310 break;
3311
3312 case INT: case CHAR: case LONG: case UNSIGNED:
3313 case SIGNED: case CONST: case DOUBLE: case VOID:
3314 case SHORT: case VOLATILE: case BOOL: case WCHAR:
3315 MATCH ();
3316 break;
3317
3318 case CLASS: case STRUCT: case UNION:
3319 /* This is for the case `STARTWRAP class X : ...' or
3320 `declare (X, Y)\n class A : ...'. */
3321 if (id)
3322 {
3323 free (id);
3324 return;
3325 }
3326
3327 case '=':
3328 /* Assumed to be the start of an initialization in this
3329 context. */
3330 skip_initializer ();
3331 break;
3332
3333 case ',':
3334 add_declarator (&cls, &id, flags, sc);
3335 break;
3336
3337 case OPERATOR:
3338 {
3339 char *s = operator_name (&sc);
3340 id = (char *) xrealloc (id, strlen (s) + 1);
3341 strcpy (id, s);
3342 }
3343 break;
3344
3345 case T_INLINE:
3346 SET_FLAG (flags, F_INLINE);
3347 MATCH ();
3348 break;
3349
3350 case '~':
3351 MATCH ();
3352 if (LOOKING_AT (IDENT))
3353 {
3354 id = (char *) xrealloc (id, strlen (yytext) + 2);
3355 *id = '~';
3356 strcpy (id + 1, yytext);
3357 MATCH ();
3358 }
3359 break;
3360
3361 case IDENT:
3362 cls = parse_qualified_ident_or_type (&id);
3363 break;
3364
3365 case '(':
3366 /* Most probably the beginning of a parameter list. */
3367 if (cls)
3368 {
3369 MATCH ();
3370
3371 if (id && cls)
3372 {
3373 if (!(is_constructor = streq (id, cls->name)))
3374 regexp = matching_regexp ();
3375 }
3376 else
3377 is_constructor = 0;
3378
3379 pos = BUFFER_POS ();
3380 hash = parm_list (&flags);
3381
3382 if (is_constructor)
3383 regexp = matching_regexp ();
3384
3385 if (id && cls)
3386 add_member_defn (cls, id, regexp, pos, hash, 0,
3387 SC_UNKNOWN, flags);
3388 }
3389 else
3390 {
3391 /* This may be a C functions, but also a macro
3392 call of the form `declare (A, B)' --- such macros
3393 can be found in some class libraries. */
3394 MATCH ();
3395
3396 if (id)
3397 {
3398 regexp = matching_regexp ();
3399 pos = BUFFER_POS ();
3400 hash = parm_list (&flags);
3401 add_global_decl (id, regexp, pos, hash, 0, sc, flags);
3402 }
3403
3404 /* This is for the case that the function really is
3405 a macro with no `;' following it. If a CLASS directly
3406 follows, we would miss it otherwise. */
3407 if (LOOKING_AT3 (CLASS, STRUCT, UNION))
3408 return;
3409 }
3410
3411 while (!LOOKING_AT3 (';', '{', YYEOF))
3412 MATCH ();
3413
3414 if (!cls && id && LOOKING_AT ('{'))
3415 add_global_defn (id, regexp, pos, hash, 0, sc, flags);
3416
3417 free (id);
3418 id = NULL;
3419 break;
3420 }
3421 }
3422
3423 add_declarator (&cls, &id, flags, sc);
3424 }
3425
3426
3427 /* Parse a list of top-level declarations/definitions. START_FLAGS
3428 says in which context we are parsing. If it is F_EXTERNC, we are
3429 parsing in an `extern "C"' block. Value is 1 if EOF is reached, 0
3430 otherwise. */
3431
3432 int
3433 globals (start_flags)
3434 int start_flags;
3435 {
3436 int anonymous;
3437 int class_tk;
3438 int flags = start_flags;
3439
3440 for (;;)
3441 {
3442 char *prev_in = in;
3443
3444 switch (LA1)
3445 {
3446 case NAMESPACE:
3447 {
3448 MATCH ();
3449
3450 if (LOOKING_AT (IDENT))
3451 {
3452 char *namespace_name = xstrdup (yytext);
3453 MATCH ();
3454
3455 if (LOOKING_AT ('='))
3456 {
3457 struct link *qna = match_qualified_namespace_alias ();
3458 if (qna)
3459 register_namespace_alias (namespace_name, qna);
3460
3461 if (skip_to (';') == ';')
3462 MATCH ();
3463 }
3464 else if (LOOKING_AT ('{'))
3465 {
3466 MATCH ();
3467 enter_namespace (namespace_name);
3468 globals (0);
3469 leave_namespace ();
3470 MATCH_IF ('}');
3471 }
3472
3473 free (namespace_name);
3474 }
3475 }
3476 break;
3477
3478 case EXTERN:
3479 MATCH ();
3480 if (LOOKING_AT (CSTRING) && *string_start == 'C'
3481 && *(string_start + 1) == '"')
3482 {
3483 /* This is `extern "C"'. */
3484 MATCH ();
3485
3486 if (LOOKING_AT ('{'))
3487 {
3488 MATCH ();
3489 globals (F_EXTERNC);
3490 MATCH_IF ('}');
3491 }
3492 else
3493 SET_FLAG (flags, F_EXTERNC);
3494 }
3495 break;
3496
3497 case TEMPLATE:
3498 MATCH ();
3499 SKIP_MATCHING_IF ('<');
3500 SET_FLAG (flags, F_TEMPLATE);
3501 break;
3502
3503 case CLASS: case STRUCT: case UNION:
3504 class_tk = LA1;
3505 MATCH ();
3506 anonymous = 1;
3507
3508 /* More than one ident here to allow for MS-DOS and OS/2
3509 specialties like `far', `_Export' etc. Some C++ libs
3510 have constructs like `_OS_DLLIMPORT(_OS_CLIENT)' in front
3511 of the class name. */
3512 while (!LOOKING_AT4 (YYEOF, ';', ':', '{'))
3513 {
3514 if (LOOKING_AT (IDENT))
3515 anonymous = 0;
3516 MATCH ();
3517 }
3518
3519 /* Don't add anonymous unions. */
3520 if (LOOKING_AT2 (':', '{') && !anonymous)
3521 class_definition (NULL, class_tk, flags, 0);
3522 else
3523 {
3524 if (skip_to (';') == ';')
3525 MATCH ();
3526 }
3527
3528 flags = start_flags;
3529 break;
3530
3531 case YYEOF:
3532 return 1;
3533
3534 case '}':
3535 return 0;
3536
3537 default:
3538 declaration (flags);
3539 flags = start_flags;
3540 break;
3541 }
3542
3543 if (prev_in == in)
3544 yyerror ("parse error", NULL);
3545 }
3546 }
3547
3548
3549 /* Parse the current input file. */
3550
3551 void
3552 yyparse ()
3553 {
3554 while (globals (0) == 0)
3555 MATCH_IF ('}');
3556 }
3557
3558
3559 \f
3560 /***********************************************************************
3561 Main Program
3562 ***********************************************************************/
3563
3564 /* Add the list of paths PATH_LIST to the current search path for
3565 input files. */
3566
3567 void
3568 add_search_path (path_list)
3569 char *path_list;
3570 {
3571 while (*path_list)
3572 {
3573 char *start = path_list;
3574 struct search_path *p;
3575
3576 while (*path_list && *path_list != PATH_LIST_SEPARATOR)
3577 ++path_list;
3578
3579 p = (struct search_path *) xmalloc (sizeof *p);
3580 p->path = (char *) xmalloc (path_list - start + 1);
3581 memcpy (p->path, start, path_list - start);
3582 p->path[path_list - start] = '\0';
3583 p->next = NULL;
3584
3585 if (search_path_tail)
3586 {
3587 search_path_tail->next = p;
3588 search_path_tail = p;
3589 }
3590 else
3591 search_path = search_path_tail = p;
3592
3593 while (*path_list == PATH_LIST_SEPARATOR)
3594 ++path_list;
3595 }
3596 }
3597
3598
3599 /* Open FILE and return a file handle for it, or -1 if FILE cannot be
3600 opened. Try to find FILE in search_path first, then try the
3601 unchanged file name. */
3602
3603 FILE *
3604 open_file (file)
3605 char *file;
3606 {
3607 FILE *fp = NULL;
3608 static char *buffer;
3609 static int buffer_size;
3610 struct search_path *path;
3611 int flen = strlen (file) + 1; /* +1 for the slash */
3612
3613 filename = xstrdup (file);
3614
3615 for (path = search_path; path && fp == NULL; path = path->next)
3616 {
3617 int len = strlen (path->path) + flen;
3618
3619 if (len + 1 >= buffer_size)
3620 {
3621 buffer_size = max (len + 1, 2 * buffer_size);
3622 buffer = (char *) xrealloc (buffer, buffer_size);
3623 }
3624
3625 strcpy (buffer, path->path);
3626 strcat (buffer, "/");
3627 strcat (buffer, file);
3628 fp = fopen (buffer, "r");
3629 }
3630
3631 /* Try the original file name. */
3632 if (fp == NULL)
3633 fp = fopen (file, "r");
3634
3635 if (fp == NULL)
3636 yyerror ("cannot open", NULL);
3637
3638 return fp;
3639 }
3640
3641
3642 /* Display usage information and exit program. */
3643
3644 #define USAGE "\
3645 Usage: ebrowse [options] {files}\n\
3646 \n\
3647 -a, --append append output to existing file\n\
3648 -f, --files=FILES read input file names from FILE\n\
3649 -I, --search-path=LIST set search path for input files\n\
3650 -m, --min-regexp-length=N set minimum regexp length to N\n\
3651 -M, --max-regexp-length=N set maximum regexp length to N\n\
3652 -n, --no-nested-classes exclude nested classes\n\
3653 -o, --output-file=FILE set output file name to FILE\n\
3654 -p, --position-info print info about position in file\n\
3655 -s, --no-structs-or-unions don't record structs or unions\n\
3656 -v, --verbose be verbose\n\
3657 -V, --very-verbose be very verbose\n\
3658 -x, --no-regexps don't record regular expressions\n\
3659 --help display this help\n\
3660 --version display version info\n\
3661 "
3662
3663 void
3664 usage (error)
3665 int error;
3666 {
3667 puts (USAGE);
3668 exit (error ? EXIT_FAILURE : EXIT_SUCCESS);
3669 }
3670
3671
3672 /* Display version and copyright info. The VERSION macro is set
3673 from the Makefile and contains the Emacs version. */
3674
3675 #ifndef VERSION
3676 # define VERSION "21"
3677 #endif
3678
3679 void
3680 version ()
3681 {
3682 /* Makes it easier to update automatically. */
3683 char emacs_copyright[] = "Copyright (C) 2009 Free Software Foundation, Inc.";
3684
3685 printf ("ebrowse %s\n", VERSION);
3686 puts (emacs_copyright);
3687 puts ("This program is distributed under the same terms as Emacs.");
3688 exit (EXIT_SUCCESS);
3689 }
3690
3691
3692 /* Parse one input file FILE, adding classes and members to the symbol
3693 table. */
3694
3695 void
3696 process_file (file)
3697 char *file;
3698 {
3699 FILE *fp;
3700
3701 fp = open_file (file);
3702 if (fp)
3703 {
3704 int nread, nbytes;
3705
3706 /* Give a progress indication if needed. */
3707 if (f_very_verbose)
3708 {
3709 puts (filename);
3710 fflush (stdout);
3711 }
3712 else if (f_verbose)
3713 {
3714 putchar ('.');
3715 fflush (stdout);
3716 }
3717
3718 /* Read file to inbuffer. */
3719 for (nread = 0;;)
3720 {
3721 if (nread + READ_CHUNK_SIZE >= inbuffer_size)
3722 {
3723 inbuffer_size = nread + READ_CHUNK_SIZE + 1;
3724 inbuffer = (char *) xrealloc (inbuffer, inbuffer_size);
3725 }
3726
3727 nbytes = fread (inbuffer + nread, 1, READ_CHUNK_SIZE, fp);
3728 if (nbytes <= 0)
3729 break;
3730 nread += nbytes;
3731 }
3732 if (nread < 0)
3733 nread = 0;
3734 inbuffer[nread] = '\0';
3735
3736 /* Reinitialize scanner and parser for the new input file. */
3737 re_init_scanner ();
3738 re_init_parser ();
3739
3740 /* Parse it and close the file. */
3741 yyparse ();
3742 fclose (fp);
3743 }
3744 }
3745
3746
3747 /* Read a line from stream FP and return a pointer to a static buffer
3748 containing its contents without the terminating newline. Value
3749 is null when EOF is reached. */
3750
3751 char *
3752 read_line (fp)
3753 FILE *fp;
3754 {
3755 static char *buffer;
3756 static int buffer_size;
3757 int i = 0, c;
3758
3759 while ((c = getc (fp)) != EOF && c != '\n')
3760 {
3761 if (i >= buffer_size)
3762 {
3763 buffer_size = max (100, buffer_size * 2);
3764 buffer = (char *) xrealloc (buffer, buffer_size);
3765 }
3766
3767 buffer[i++] = c;
3768 }
3769
3770 if (c == EOF && i == 0)
3771 return NULL;
3772
3773 if (i == buffer_size)
3774 {
3775 buffer_size = max (100, buffer_size * 2);
3776 buffer = (char *) xrealloc (buffer, buffer_size);
3777 }
3778
3779 buffer[i] = '\0';
3780 if (i > 0 && buffer[i - 1] == '\r')
3781 buffer[i - 1] = '\0';
3782 return buffer;
3783 }
3784
3785
3786 /* Main entry point. */
3787
3788 int
3789 main (argc, argv)
3790 int argc;
3791 char **argv;
3792 {
3793 int i;
3794 int any_inputfiles = 0;
3795 static char *out_filename = DEFAULT_OUTFILE;
3796 static char **input_filenames = NULL;
3797 static int input_filenames_size = 0;
3798 static int n_input_files;
3799
3800 filename = "command line";
3801 yyout = stdout;
3802
3803 while ((i = getopt_long (argc, argv, "af:I:m:M:no:p:svVx",
3804 options, NULL)) != EOF)
3805 {
3806 switch (i)
3807 {
3808 /* Experimental. */
3809 case 'p':
3810 info_position = atoi (optarg);
3811 break;
3812
3813 case 'n':
3814 f_nested_classes = 0;
3815 break;
3816
3817 case 'x':
3818 f_regexps = 0;
3819 break;
3820
3821 /* Add the name of a file containing more input files. */
3822 case 'f':
3823 if (n_input_files == input_filenames_size)
3824 {
3825 input_filenames_size = max (10, 2 * input_filenames_size);
3826 input_filenames = (char **) xrealloc ((void *)input_filenames,
3827 input_filenames_size);
3828 }
3829 input_filenames[n_input_files++] = xstrdup (optarg);
3830 break;
3831
3832 /* Append new output to output file instead of truncating it. */
3833 case 'a':
3834 f_append = 1;
3835 break;
3836
3837 /* Include structs in the output */
3838 case 's':
3839 f_structs = 0;
3840 break;
3841
3842 /* Be verbose (give a progress indication). */
3843 case 'v':
3844 f_verbose = 1;
3845 break;
3846
3847 /* Be very verbose (print file names as they are processed). */
3848 case 'V':
3849 f_verbose = 1;
3850 f_very_verbose = 1;
3851 break;
3852
3853 /* Change the name of the output file. */
3854 case 'o':
3855 out_filename = optarg;
3856 break;
3857
3858 /* Set minimum length for regular expression strings
3859 when recorded in the output file. */
3860 case 'm':
3861 min_regexp = atoi (optarg);
3862 break;
3863
3864 /* Set maximum length for regular expression strings
3865 when recorded in the output file. */
3866 case 'M':
3867 max_regexp = atoi (optarg);
3868 break;
3869
3870 /* Add to search path. */
3871 case 'I':
3872 add_search_path (optarg);
3873 break;
3874
3875 /* Display help */
3876 case -2:
3877 usage (0);
3878 break;
3879
3880 case -3:
3881 version ();
3882 break;
3883 }
3884 }
3885
3886 /* Call init_scanner after command line flags have been processed to be
3887 able to add keywords depending on command line (not yet
3888 implemented). */
3889 init_scanner ();
3890 init_sym ();
3891
3892 /* Open output file */
3893 if (*out_filename)
3894 {
3895 if (f_append)
3896 {
3897 /* Check that the file to append to exists, and is not
3898 empty. More specifically, it should be a valid file
3899 produced by a previous run of ebrowse, but that's too
3900 difficult to check. */
3901 FILE *fp;
3902 int rc;
3903
3904 fp = fopen (out_filename, "r");
3905 if (fp == NULL)
3906 {
3907 yyerror ("file `%s' must exist for --append", out_filename);
3908 exit (EXIT_FAILURE);
3909 }
3910
3911 rc = fseek (fp, 0, SEEK_END);
3912 if (rc == -1)
3913 {
3914 yyerror ("error seeking in file `%s'", out_filename);
3915 exit (EXIT_FAILURE);
3916 }
3917
3918 rc = ftell (fp);
3919 if (rc == -1)
3920 {
3921 yyerror ("error getting size of file `%s'", out_filename);
3922 exit (EXIT_FAILURE);
3923 }
3924
3925 else if (rc == 0)
3926 {
3927 yyerror ("file `%s' is empty", out_filename);
3928 /* It may be ok to use an empty file for appending.
3929 exit (EXIT_FAILURE); */
3930 }
3931
3932 fclose (fp);
3933 }
3934
3935 yyout = fopen (out_filename, f_append ? "a" : "w");
3936 if (yyout == NULL)
3937 {
3938 yyerror ("cannot open output file `%s'", out_filename);
3939 exit (EXIT_FAILURE);
3940 }
3941 }
3942
3943 /* Process input files specified on the command line. */
3944 while (optind < argc)
3945 {
3946 process_file (argv[optind++]);
3947 any_inputfiles = 1;
3948 }
3949
3950 /* Process files given on stdin if no files specified. */
3951 if (!any_inputfiles && n_input_files == 0)
3952 {
3953 char *file;
3954 while ((file = read_line (stdin)) != NULL)
3955 process_file (file);
3956 }
3957 else
3958 {
3959 /* Process files from `--files=FILE'. Every line in FILE names
3960 one input file to process. */
3961 for (i = 0; i < n_input_files; ++i)
3962 {
3963 FILE *fp = fopen (input_filenames[i], "r");
3964
3965 if (fp == NULL)
3966 yyerror ("cannot open input file `%s'", input_filenames[i]);
3967 else
3968 {
3969 char *file;
3970 while ((file = read_line (fp)) != NULL)
3971 process_file (file);
3972 fclose (fp);
3973 }
3974 }
3975 }
3976
3977 /* Write output file. */
3978 dump_roots (yyout);
3979
3980 /* Close output file. */
3981 if (yyout != stdout)
3982 fclose (yyout);
3983
3984 return EXIT_SUCCESS;
3985 }
3986
3987 /* arch-tag: fc03b4bc-91a9-4c3d-b3b9-12a77fa86dd8
3988 (do not change this comment) */
3989
3990 /* ebrowse.c ends here */
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