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[emacs.git] / lib-src / ebrowse.c
blobea230a9c3cdb27733bf05063efd4a9a85c5282c8
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 Free Software Foundation, Inc.
5
6 This file is part of GNU Emacs.
7
8 GNU Emacs is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3, or (at your option)
11 any later version.
12
13 GNU Emacs is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GNU Emacs; see the file COPYING. If not, write to the
20 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 Boston, MA 02110-1301, USA. */
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 free but always check for null pointers.. */
593
594 void
595 xfree (p)
596 void *p;
597 {
598 if (p)
599 free (p);
600 }
601
602
603 /* Like strdup, but print an error and exit if not enough memory is
604 available.. If S is null, return null. */
605
606 char *
607 xstrdup (s)
608 char *s;
609 {
610 if (s)
611 s = strcpy (xmalloc (strlen (s) + 1), s);
612 return s;
613 }
614
615
616 \f
617 /***********************************************************************
618 Symbols
619 ***********************************************************************/
620
621 /* Initialize the symbol table. This currently only sets up the
622 special symbol for globals (`*Globals*'). */
623
624 void
625 init_sym ()
626 {
627 global_symbols = add_sym (GLOBALS_NAME, NULL);
628 }
629
630
631 /* Add a symbol for class NAME to the symbol table. NESTED_IN_CLASS
632 is the class in which class NAME was found. If it is null,
633 this means the scope of NAME is the current namespace.
634
635 If a symbol for NAME already exists, return that. Otherwise
636 create a new symbol and set it to default values. */
637
638 struct sym *
639 add_sym (name, nested_in_class)
640 char *name;
641 struct sym *nested_in_class;
642 {
643 struct sym *sym;
644 unsigned h;
645 char *s;
646 struct sym *scope = nested_in_class ? nested_in_class : current_namespace;
647
648 for (s = name, h = 0; *s; ++s)
649 h = (h << 1) ^ *s;
650 h %= TABLE_SIZE;
651
652 for (sym = class_table[h]; sym; sym = sym->next)
653 if (streq (name, sym->name)
654 && ((!sym->namesp && !scope)
655 || (sym->namesp && scope
656 && streq (sym->namesp->name, scope->name))))
657 break;
658
659 if (sym == NULL)
660 {
661 if (f_very_verbose)
662 {
663 putchar ('\t');
664 puts (name);
665 }
666
667 sym = (struct sym *) xmalloc (sizeof *sym + strlen (name));
668 bzero (sym, sizeof *sym);
669 strcpy (sym->name, name);
670 sym->namesp = scope;
671 sym->next = class_table[h];
672 class_table[h] = sym;
673 }
674
675 return sym;
676 }
677
678
679 /* Add links between superclass SUPER and subclass SUB. */
680
681 void
682 add_link (super, sub)
683 struct sym *super, *sub;
684 {
685 struct link *lnk, *lnk2, *p, *prev;
686
687 /* See if a link already exists. */
688 for (p = super->subs, prev = NULL;
689 p && strcmp (sub->name, p->sym->name) > 0;
690 prev = p, p = p->next)
691 ;
692
693 /* Avoid duplicates. */
694 if (p == NULL || p->sym != sub)
695 {
696 lnk = (struct link *) xmalloc (sizeof *lnk);
697 lnk2 = (struct link *) xmalloc (sizeof *lnk2);
698
699 lnk->sym = sub;
700 lnk->next = p;
701
702 if (prev)
703 prev->next = lnk;
704 else
705 super->subs = lnk;
706
707 lnk2->sym = super;
708 lnk2->next = sub->supers;
709 sub->supers = lnk2;
710 }
711 }
712
713
714 /* Find in class CLS member NAME.
715
716 VAR non-zero means look for a member variable; otherwise a function
717 is searched. SC specifies what kind of member is searched---a
718 static, or per-instance member etc. HASH is a hash code for the
719 parameter types of functions. Value is a pointer to the member
720 found or null if not found. */
721
722 struct member *
723 find_member (cls, name, var, sc, hash)
724 struct sym *cls;
725 char *name;
726 int var, sc;
727 unsigned hash;
728 {
729 struct member **list;
730 struct member *p;
731 unsigned name_hash = 0;
732 char *s;
733 int i;
734
735 switch (sc)
736 {
737 case SC_FRIEND:
738 list = &cls->friends;
739 break;
740
741 case SC_TYPE:
742 list = &cls->types;
743 break;
744
745 case SC_STATIC:
746 list = var ? &cls->static_vars : &cls->static_fns;
747 break;
748
749 default:
750 list = var ? &cls->vars : &cls->fns;
751 break;
752 }
753
754 for (s = name; *s; ++s)
755 name_hash = (name_hash << 1) ^ *s;
756 i = name_hash % TABLE_SIZE;
757
758 for (p = member_table[i]; p; p = p->anext)
759 if (p->list == list && p->param_hash == hash && streq (name, p->name))
760 break;
761
762 return p;
763 }
764
765
766 /* Add to class CLS information for the declaration of member NAME.
767 REGEXP is a regexp matching the declaration, if non-null. POS is
768 the position in the source where the declaration is found. HASH is
769 a hash code for the parameter list of the member, if it's a
770 function. VAR non-zero means member is a variable or type. SC
771 specifies the type of member (instance member, static, ...). VIS
772 is the member's visibility (public, protected, private). FLAGS is
773 a bit set giving additional information about the member (see the
774 F_* defines). */
775
776 void
777 add_member_decl (cls, name, regexp, pos, hash, var, sc, vis, flags)
778 struct sym *cls;
779 char *name;
780 char *regexp;
781 int pos;
782 unsigned hash;
783 int var;
784 int sc;
785 int vis;
786 int flags;
787 {
788 struct member *m;
789
790 m = find_member (cls, name, var, sc, hash);
791 if (m == NULL)
792 m = add_member (cls, name, var, sc, hash);
793
794 /* Have we seen a new filename? If so record that. */
795 if (!cls->filename || !FILENAME_EQ (cls->filename, filename))
796 m->filename = filename;
797
798 m->regexp = regexp;
799 m->pos = pos;
800 m->flags = flags;
801
802 switch (vis)
803 {
804 case PRIVATE:
805 m->vis = V_PRIVATE;
806 break;
807
808 case PROTECTED:
809 m->vis = V_PROTECTED;
810 break;
811
812 case PUBLIC:
813 m->vis = V_PUBLIC;
814 break;
815 }
816
817 info_where = P_DECL;
818 info_cls = cls;
819 info_member = m;
820 }
821
822
823 /* Add to class CLS information for the definition of member NAME.
824 REGEXP is a regexp matching the declaration, if non-null. POS is
825 the position in the source where the declaration is found. HASH is
826 a hash code for the parameter list of the member, if it's a
827 function. VAR non-zero means member is a variable or type. SC
828 specifies the type of member (instance member, static, ...). VIS
829 is the member's visibility (public, protected, private). FLAGS is
830 a bit set giving additional information about the member (see the
831 F_* defines). */
832
833 void
834 add_member_defn (cls, name, regexp, pos, hash, var, sc, flags)
835 struct sym *cls;
836 char *name;
837 char *regexp;
838 int pos;
839 unsigned hash;
840 int var;
841 int sc;
842 int flags;
843 {
844 struct member *m;
845
846 if (sc == SC_UNKNOWN)
847 {
848 m = find_member (cls, name, var, SC_MEMBER, hash);
849 if (m == NULL)
850 {
851 m = find_member (cls, name, var, SC_STATIC, hash);
852 if (m == NULL)
853 m = add_member (cls, name, var, sc, hash);
854 }
855 }
856 else
857 {
858 m = find_member (cls, name, var, sc, hash);
859 if (m == NULL)
860 m = add_member (cls, name, var, sc, hash);
861 }
862
863 if (!cls->sfilename)
864 cls->sfilename = filename;
865
866 if (!FILENAME_EQ (cls->sfilename, filename))
867 m->def_filename = filename;
868
869 m->def_regexp = regexp;
870 m->def_pos = pos;
871 m->flags |= flags;
872
873 info_where = P_DEFN;
874 info_cls = cls;
875 info_member = m;
876 }
877
878
879 /* Add a symbol for a define named NAME to the symbol table.
880 REGEXP is a regular expression matching the define in the source,
881 if it is non-null. POS is the position in the file. */
882
883 void
884 add_define (name, regexp, pos)
885 char *name, *regexp;
886 int pos;
887 {
888 add_global_defn (name, regexp, pos, 0, 1, SC_FRIEND, F_DEFINE);
889 add_global_decl (name, regexp, pos, 0, 1, SC_FRIEND, F_DEFINE);
890 }
891
892
893 /* Add information for the global definition of NAME.
894 REGEXP is a regexp matching the declaration, if non-null. POS is
895 the position in the source where the declaration is found. HASH is
896 a hash code for the parameter list of the member, if it's a
897 function. VAR non-zero means member is a variable or type. SC
898 specifies the type of member (instance member, static, ...). VIS
899 is the member's visibility (public, protected, private). FLAGS is
900 a bit set giving additional information about the member (see the
901 F_* defines). */
902
903 void
904 add_global_defn (name, regexp, pos, hash, var, sc, flags)
905 char *name, *regexp;
906 int pos;
907 unsigned hash;
908 int var;
909 int sc;
910 int flags;
911 {
912 int i;
913 struct sym *sym;
914
915 /* Try to find out for which classes a function is a friend, and add
916 what we know about it to them. */
917 if (!var)
918 for (i = 0; i < TABLE_SIZE; ++i)
919 for (sym = class_table[i]; sym; sym = sym->next)
920 if (sym != global_symbols && sym->friends)
921 if (find_member (sym, name, 0, SC_FRIEND, hash))
922 add_member_defn (sym, name, regexp, pos, hash, 0,
923 SC_FRIEND, flags);
924
925 /* Add to global symbols. */
926 add_member_defn (global_symbols, name, regexp, pos, hash, var, sc, flags);
927 }
928
929
930 /* Add information for the global declaration of NAME.
931 REGEXP is a regexp matching the declaration, if non-null. POS is
932 the position in the source where the declaration is found. HASH is
933 a hash code for the parameter list of the member, if it's a
934 function. VAR non-zero means member is a variable or type. SC
935 specifies the type of member (instance member, static, ...). VIS
936 is the member's visibility (public, protected, private). FLAGS is
937 a bit set giving additional information about the member (see the
938 F_* defines). */
939
940 void
941 add_global_decl (name, regexp, pos, hash, var, sc, flags)
942 char *name, *regexp;
943 int pos;
944 unsigned hash;
945 int var;
946 int sc;
947 int flags;
948 {
949 /* Add declaration only if not already declared. Header files must
950 be processed before source files for this to have the right effect.
951 I do not want to handle implicit declarations at the moment. */
952 struct member *m;
953 struct member *found;
954
955 m = found = find_member (global_symbols, name, var, sc, hash);
956 if (m == NULL)
957 m = add_member (global_symbols, name, var, sc, hash);
958
959 /* Definition already seen => probably last declaration implicit.
960 Override. This means that declarations must always be added to
961 the symbol table before definitions. */
962 if (!found)
963 {
964 if (!global_symbols->filename
965 || !FILENAME_EQ (global_symbols->filename, filename))
966 m->filename = filename;
967
968 m->regexp = regexp;
969 m->pos = pos;
970 m->vis = V_PUBLIC;
971 m->flags = flags;
972
973 info_where = P_DECL;
974 info_cls = global_symbols;
975 info_member = m;
976 }
977 }
978
979
980 /* Add a symbol for member NAME to class CLS.
981 VAR non-zero means it's a variable. SC specifies the kind of
982 member. HASH is a hash code for the parameter types of a function.
983 Value is a pointer to the member's structure. */
984
985 struct member *
986 add_member (cls, name, var, sc, hash)
987 struct sym *cls;
988 char *name;
989 int var;
990 int sc;
991 unsigned hash;
992 {
993 struct member *m = (struct member *) xmalloc (sizeof *m + strlen (name));
994 struct member **list;
995 struct member *p;
996 struct member *prev;
997 unsigned name_hash = 0;
998 int i;
999 char *s;
1000
1001 strcpy (m->name, name);
1002 m->param_hash = hash;
1003
1004 m->vis = 0;
1005 m->flags = 0;
1006 m->regexp = NULL;
1007 m->filename = NULL;
1008 m->pos = 0;
1009 m->def_regexp = NULL;
1010 m->def_filename = NULL;
1011 m->def_pos = 0;
1012
1013 assert (cls != NULL);
1014
1015 switch (sc)
1016 {
1017 case SC_FRIEND:
1018 list = &cls->friends;
1019 break;
1020
1021 case SC_TYPE:
1022 list = &cls->types;
1023 break;
1024
1025 case SC_STATIC:
1026 list = var ? &cls->static_vars : &cls->static_fns;
1027 break;
1028
1029 default:
1030 list = var ? &cls->vars : &cls->fns;
1031 break;
1032 }
1033
1034 for (s = name; *s; ++s)
1035 name_hash = (name_hash << 1) ^ *s;
1036 i = name_hash % TABLE_SIZE;
1037 m->anext = member_table[i];
1038 member_table[i] = m;
1039 m->list = list;
1040
1041 /* Keep the member list sorted. It's cheaper to do it here than to
1042 sort them in Lisp. */
1043 for (prev = NULL, p = *list;
1044 p && strcmp (name, p->name) > 0;
1045 prev = p, p = p->next)
1046 ;
1047
1048 m->next = p;
1049 if (prev)
1050 prev->next = m;
1051 else
1052 *list = m;
1053 return m;
1054 }
1055
1056
1057 /* Given the root R of a class tree, step through all subclasses
1058 recursively, marking functions as virtual that are declared virtual
1059 in base classes. */
1060
1061 void
1062 mark_virtual (r)
1063 struct sym *r;
1064 {
1065 struct link *p;
1066 struct member *m, *m2;
1067
1068 for (p = r->subs; p; p = p->next)
1069 {
1070 for (m = r->fns; m; m = m->next)
1071 if (HAS_FLAG (m->flags, F_VIRTUAL))
1072 {
1073 for (m2 = p->sym->fns; m2; m2 = m2->next)
1074 if (m->param_hash == m2->param_hash && streq (m->name, m2->name))
1075 SET_FLAG (m2->flags, F_VIRTUAL);
1076 }
1077
1078 mark_virtual (p->sym);
1079 }
1080 }
1081
1082
1083 /* For all roots of the class tree, mark functions as virtual that
1084 are virtual because of a virtual declaration in a base class. */
1085
1086 void
1087 mark_inherited_virtual ()
1088 {
1089 struct sym *r;
1090 int i;
1091
1092 for (i = 0; i < TABLE_SIZE; ++i)
1093 for (r = class_table[i]; r; r = r->next)
1094 if (r->supers == NULL)
1095 mark_virtual (r);
1096 }
1097
1098
1099 /* Create and return a symbol for a namespace with name NAME. */
1100
1101 struct sym *
1102 make_namespace (name, context)
1103 char *name;
1104 struct sym *context;
1105 {
1106 struct sym *s = (struct sym *) xmalloc (sizeof *s + strlen (name));
1107 bzero (s, sizeof *s);
1108 strcpy (s->name, name);
1109 s->next = all_namespaces;
1110 s->namesp = context;
1111 all_namespaces = s;
1112 return s;
1113 }
1114
1115
1116 /* Find the symbol for namespace NAME. If not found, retrun NULL */
1117
1118 struct sym *
1119 check_namespace (name, context)
1120 char *name;
1121 struct sym *context;
1122 {
1123 struct sym *p = NULL;
1124
1125 for (p = all_namespaces; p; p = p->next)
1126 {
1127 if (streq (p->name, name) && (p->namesp == context))
1128 break;
1129 }
1130
1131 return p;
1132 }
1133
1134 /* Find the symbol for namespace NAME. If not found, add a new symbol
1135 for NAME to all_namespaces. */
1136
1137 struct sym *
1138 find_namespace (name, context)
1139 char *name;
1140 struct sym *context;
1141 {
1142 struct sym *p = check_namespace (name, context);
1143
1144 if (p == NULL)
1145 p = make_namespace (name, context);
1146
1147 return p;
1148 }
1149
1150
1151 /* Find namespace alias with name NAME. If not found return NULL. */
1152
1153 struct link *
1154 check_namespace_alias (name)
1155 char *name;
1156 {
1157 struct link *p = NULL;
1158 struct alias *al;
1159 unsigned h;
1160 char *s;
1161
1162 for (s = name, h = 0; *s; ++s)
1163 h = (h << 1) ^ *s;
1164 h %= TABLE_SIZE;
1165
1166 for (al = namespace_alias_table[h]; al; al = al->next)
1167 if (streq (name, al->name) && (al->namesp == current_namespace))
1168 {
1169 p = al->aliasee;
1170 break;
1171 }
1172
1173 return p;
1174 }
1175
1176 /* Register the name NEW_NAME as an alias for namespace list OLD_NAME. */
1177
1178 void
1179 register_namespace_alias (new_name, old_name)
1180 char *new_name;
1181 struct link *old_name;
1182 {
1183 unsigned h;
1184 char *s;
1185 struct alias *al;
1186
1187 for (s = new_name, h = 0; *s; ++s)
1188 h = (h << 1) ^ *s;
1189 h %= TABLE_SIZE;
1190
1191
1192 /* Is it already in the table of aliases? */
1193 for (al = namespace_alias_table[h]; al; al = al->next)
1194 if (streq (new_name, al->name) && (al->namesp == current_namespace))
1195 return;
1196
1197 al = (struct alias *) xmalloc (sizeof *al + strlen (new_name));
1198 strcpy (al->name, new_name);
1199 al->next = namespace_alias_table[h];
1200 al->namesp = current_namespace;
1201 al->aliasee = old_name;
1202 namespace_alias_table[h] = al;
1203 }
1204
1205
1206 /* Enter namespace with name NAME. */
1207
1208 void
1209 enter_namespace (name)
1210 char *name;
1211 {
1212 struct sym *p = find_namespace (name, current_namespace);
1213
1214 if (namespace_sp == namespace_stack_size)
1215 {
1216 int size = max (10, 2 * namespace_stack_size);
1217 namespace_stack
1218 = (struct sym **) xrealloc ((void *)namespace_stack,
1219 size * sizeof *namespace_stack);
1220 namespace_stack_size = size;
1221 }
1222
1223 namespace_stack[namespace_sp++] = current_namespace;
1224 current_namespace = p;
1225 }
1226
1227
1228 /* Leave the current namespace. */
1229
1230 void
1231 leave_namespace ()
1232 {
1233 assert (namespace_sp > 0);
1234 current_namespace = namespace_stack[--namespace_sp];
1235 }
1236
1237
1238 \f
1239 /***********************************************************************
1240 Writing the Output File
1241 ***********************************************************************/
1242
1243 /* Write string S to the output file FP in a Lisp-readable form.
1244 If S is null, write out `()'. */
1245
1246 #define PUTSTR(s, fp) \
1247 do { \
1248 if (!s) \
1249 { \
1250 putc ('(', fp); \
1251 putc (')', fp); \
1252 putc (' ', fp); \
1253 } \
1254 else \
1255 { \
1256 putc ('"', fp); \
1257 fputs (s, fp); \
1258 putc ('"', fp); \
1259 putc (' ', fp); \
1260 } \
1261 } while (0)
1262
1263 /* A dynamically allocated buffer for constructing a scope name. */
1264
1265 char *scope_buffer;
1266 int scope_buffer_size;
1267 int scope_buffer_len;
1268
1269
1270 /* Make sure scope_buffer has enough room to add LEN chars to it. */
1271
1272 void
1273 ensure_scope_buffer_room (len)
1274 int len;
1275 {
1276 if (scope_buffer_len + len >= scope_buffer_size)
1277 {
1278 int new_size = max (2 * scope_buffer_size, scope_buffer_len + len);
1279 scope_buffer = (char *) xrealloc (scope_buffer, new_size);
1280 scope_buffer_size = new_size;
1281 }
1282 }
1283
1284
1285 /* Recursively add the scope names of symbol P and the scopes of its
1286 namespaces to scope_buffer. Value is a pointer to the complete
1287 scope name constructed. */
1288
1289 char *
1290 sym_scope_1 (p)
1291 struct sym *p;
1292 {
1293 int len;
1294
1295 if (p->namesp)
1296 sym_scope_1 (p->namesp);
1297
1298 if (*scope_buffer)
1299 {
1300 ensure_scope_buffer_room (3);
1301 strcat (scope_buffer, "::");
1302 scope_buffer_len += 2;
1303 }
1304
1305 len = strlen (p->name);
1306 ensure_scope_buffer_room (len + 1);
1307 strcat (scope_buffer, p->name);
1308 scope_buffer_len += len;
1309
1310 if (HAS_FLAG (p->flags, F_TEMPLATE))
1311 {
1312 ensure_scope_buffer_room (3);
1313 strcat (scope_buffer, "<>");
1314 scope_buffer_len += 2;
1315 }
1316
1317 return scope_buffer;
1318 }
1319
1320
1321 /* Return the scope of symbol P in printed representation, i.e.
1322 as it would appear in a C*+ source file. */
1323
1324 char *
1325 sym_scope (p)
1326 struct sym *p;
1327 {
1328 if (!scope_buffer)
1329 {
1330 scope_buffer_size = 1024;
1331 scope_buffer = (char *) xmalloc (scope_buffer_size);
1332 }
1333
1334 *scope_buffer = '\0';
1335 scope_buffer_len = 0;
1336
1337 if (p->namesp)
1338 sym_scope_1 (p->namesp);
1339
1340 return scope_buffer;
1341 }
1342
1343
1344 /* Dump the list of members M to file FP. Value is the length of the
1345 list. */
1346
1347 int
1348 dump_members (fp, m)
1349 FILE *fp;
1350 struct member *m;
1351 {
1352 int n;
1353
1354 putc ('(', fp);
1355
1356 for (n = 0; m; m = m->next, ++n)
1357 {
1358 fputs (MEMBER_STRUCT, fp);
1359 PUTSTR (m->name, fp);
1360 PUTSTR (NULL, fp); /* FIXME? scope for globals */
1361 fprintf (fp, "%u ", (unsigned) m->flags);
1362 PUTSTR (m->filename, fp);
1363 PUTSTR (m->regexp, fp);
1364 fprintf (fp, "%u ", (unsigned) m->pos);
1365 fprintf (fp, "%u ", (unsigned) m->vis);
1366 putc (' ', fp);
1367 PUTSTR (m->def_filename, fp);
1368 PUTSTR (m->def_regexp, fp);
1369 fprintf (fp, "%u", (unsigned) m->def_pos);
1370 putc (']', fp);
1371 putc ('\n', fp);
1372 }
1373
1374 putc (')', fp);
1375 putc ('\n', fp);
1376 return n;
1377 }
1378
1379
1380 /* Dump class ROOT to stream FP. */
1381
1382 void
1383 dump_sym (fp, root)
1384 FILE *fp;
1385 struct sym *root;
1386 {
1387 fputs (CLASS_STRUCT, fp);
1388 PUTSTR (root->name, fp);
1389
1390 /* Print scope, if any. */
1391 if (root->namesp)
1392 PUTSTR (sym_scope (root), fp);
1393 else
1394 PUTSTR (NULL, fp);
1395
1396 /* Print flags. */
1397 fprintf (fp, "%u", root->flags);
1398 PUTSTR (root->filename, fp);
1399 PUTSTR (root->regexp, fp);
1400 fprintf (fp, "%u", (unsigned) root->pos);
1401 PUTSTR (root->sfilename, fp);
1402 putc (']', fp);
1403 putc ('\n', fp);
1404 }
1405
1406
1407 /* Dump class ROOT and its subclasses to file FP. Value is the
1408 number of classes written. */
1409
1410 int
1411 dump_tree (fp, root)
1412 FILE *fp;
1413 struct sym *root;
1414 {
1415 struct link *lk;
1416 unsigned n = 0;
1417
1418 dump_sym (fp, root);
1419
1420 if (f_verbose)
1421 {
1422 putchar ('+');
1423 fflush (stdout);
1424 }
1425
1426 putc ('(', fp);
1427
1428 for (lk = root->subs; lk; lk = lk->next)
1429 {
1430 fputs (TREE_STRUCT, fp);
1431 n += dump_tree (fp, lk->sym);
1432 putc (']', fp);
1433 }
1434
1435 putc (')', fp);
1436
1437 dump_members (fp, root->vars);
1438 n += dump_members (fp, root->fns);
1439 dump_members (fp, root->static_vars);
1440 n += dump_members (fp, root->static_fns);
1441 n += dump_members (fp, root->friends);
1442 dump_members (fp, root->types);
1443
1444 /* Superclasses. */
1445 putc ('(', fp);
1446 putc (')', fp);
1447
1448 /* Mark slot. */
1449 putc ('(', fp);
1450 putc (')', fp);
1451
1452 putc ('\n', fp);
1453 return n;
1454 }
1455
1456
1457 /* Dump the entire class tree to file FP. */
1458
1459 void
1460 dump_roots (fp)
1461 FILE *fp;
1462 {
1463 int i, n = 0;
1464 struct sym *r;
1465
1466 /* Output file header containing version string, command line
1467 options etc. */
1468 if (!f_append)
1469 {
1470 fputs (TREE_HEADER_STRUCT, fp);
1471 PUTSTR (EBROWSE_FILE_VERSION, fp);
1472
1473 putc ('\"', fp);
1474 if (!f_structs)
1475 fputs (" -s", fp);
1476 if (f_regexps)
1477 fputs (" -x", fp);
1478 putc ('\"', fp);
1479 fputs (" ()", fp);
1480 fputs (" ()", fp);
1481 putc (']', fp);
1482 }
1483
1484 /* Mark functions as virtual that are so because of functions
1485 declared virtual in base classes. */
1486 mark_inherited_virtual ();
1487
1488 /* Dump the roots of the graph. */
1489 for (i = 0; i < TABLE_SIZE; ++i)
1490 for (r = class_table[i]; r; r = r->next)
1491 if (!r->supers)
1492 {
1493 fputs (TREE_STRUCT, fp);
1494 n += dump_tree (fp, r);
1495 putc (']', fp);
1496 }
1497
1498 if (f_verbose)
1499 putchar ('\n');
1500 }
1501
1502
1503 \f
1504 /***********************************************************************
1505 Scanner
1506 ***********************************************************************/
1507
1508 #ifdef DEBUG
1509 #define INCREMENT_LINENO \
1510 do { \
1511 if (f_very_verbose) \
1512 { \
1513 ++yyline; \
1514 printf ("%d:\n", yyline); \
1515 } \
1516 else \
1517 ++yyline; \
1518 } while (0)
1519 #else
1520 #define INCREMENT_LINENO ++yyline
1521 #endif
1522
1523 /* Define two macros for accessing the input buffer (current input
1524 file). GET(C) sets C to the next input character and advances the
1525 input pointer. UNGET retracts the input pointer. */
1526
1527 #define GET(C) ((C) = *in++)
1528 #define UNGET() (--in)
1529
1530
1531 /* Process a preprocessor line. Value is the next character from the
1532 input buffer not consumed. */
1533
1534 int
1535 process_pp_line ()
1536 {
1537 int in_comment = 0, in_string = 0;
1538 int c;
1539 char *p = yytext;
1540
1541 /* Skip over white space. The `#' has been consumed already. */
1542 while (WHITEP (GET (c)))
1543 ;
1544
1545 /* Read the preprocessor command (if any). */
1546 while (IDENTP (c))
1547 {
1548 *p++ = c;
1549 GET (c);
1550 }
1551
1552 /* Is it a `define'? */
1553 *p = '\0';
1554
1555 if (*yytext && streq (yytext, "define"))
1556 {
1557 p = yytext;
1558 while (WHITEP (c))
1559 GET (c);
1560 while (IDENTP (c))
1561 {
1562 *p++ = c;
1563 GET (c);
1564 }
1565
1566 *p = '\0';
1567
1568 if (*yytext)
1569 {
1570 char *regexp = matching_regexp ();
1571 int pos = BUFFER_POS ();
1572 add_define (yytext, regexp, pos);
1573 }
1574 }
1575
1576 while (c && (c != '\n' || in_comment || in_string))
1577 {
1578 if (c == '\\')
1579 GET (c);
1580 else if (c == '/' && !in_comment)
1581 {
1582 if (GET (c) == '*')
1583 in_comment = 1;
1584 }
1585 else if (c == '*' && in_comment)
1586 {
1587 if (GET (c) == '/')
1588 in_comment = 0;
1589 }
1590 else if (c == '"')
1591 in_string = !in_string;
1592
1593 if (c == '\n')
1594 INCREMENT_LINENO;
1595
1596 GET (c);
1597 }
1598
1599 return c;
1600 }
1601
1602
1603 /* Value is the next token from the input buffer. */
1604
1605 int
1606 yylex ()
1607 {
1608 int c;
1609 char end_char;
1610 char *p;
1611
1612 for (;;)
1613 {
1614 while (WHITEP (GET (c)))
1615 ;
1616
1617 switch (c)
1618 {
1619 case '\n':
1620 INCREMENT_LINENO;
1621 break;
1622
1623 case '\r':
1624 break;
1625
1626 case 0:
1627 /* End of file. */
1628 return YYEOF;
1629
1630 case '\\':
1631 GET (c);
1632 break;
1633
1634 case '"':
1635 case '\'':
1636 /* String and character constants. */
1637 end_char = c;
1638 string_start = in;
1639 while (GET (c) && c != end_char)
1640 {
1641 switch (c)
1642 {
1643 case '\\':
1644 /* Escape sequences. */
1645 if (!GET (c))
1646 {
1647 if (end_char == '\'')
1648 yyerror ("EOF in character constant", NULL);
1649 else
1650 yyerror ("EOF in string constant", NULL);
1651 goto end_string;
1652 }
1653 else switch (c)
1654 {
1655 case '\n':
1656 INCREMENT_LINENO;
1657 case 'a':
1658 case 'b':
1659 case 'f':
1660 case 'n':
1661 case 'r':
1662 case 't':
1663 case 'v':
1664 break;
1665
1666 case 'x':
1667 {
1668 /* Hexadecimal escape sequence. */
1669 int i;
1670 for (i = 0; i < 2; ++i)
1671 {
1672 GET (c);
1673
1674 if (c >= '0' && c <= '7')
1675 ;
1676 else if (c >= 'a' && c <= 'f')
1677 ;
1678 else if (c >= 'A' && c <= 'F')
1679 ;
1680 else
1681 {
1682 UNGET ();
1683 break;
1684 }
1685 }
1686 }
1687 break;
1688
1689 case '0':
1690 {
1691 /* Octal escape sequence. */
1692 int i;
1693 for (i = 0; i < 3; ++i)
1694 {
1695 GET (c);
1696
1697 if (c >= '0' && c <= '7')
1698 ;
1699 else
1700 {
1701 UNGET ();
1702 break;
1703 }
1704 }
1705 }
1706 break;
1707
1708 default:
1709 break;
1710 }
1711 break;
1712
1713 case '\n':
1714 if (end_char == '\'')
1715 yyerror ("newline in character constant", NULL);
1716 else
1717 yyerror ("newline in string constant", NULL);
1718 INCREMENT_LINENO;
1719 break;
1720
1721 default:
1722 break;
1723 }
1724 }
1725
1726 end_string:
1727 return end_char == '\'' ? CCHAR : CSTRING;
1728
1729 case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g':
1730 case 'h': case 'i': case 'j': case 'k': case 'l': case 'm': case 'n':
1731 case 'o': case 'p': case 'q': case 'r': case 's': case 't': case 'u':
1732 case 'v': case 'w': case 'x': case 'y': case 'z':
1733 case 'A': case 'B': case 'C': case 'D': case 'E': case 'F': case 'G':
1734 case 'H': case 'I': case 'J': case 'K': case 'L': case 'M': case 'N':
1735 case 'O': case 'P': case 'Q': case 'R': case 'S': case 'T': case 'U':
1736 case 'V': case 'W': case 'X': case 'Y': case 'Z': case '_':
1737 {
1738 /* Identifier and keywords. */
1739 unsigned hash;
1740 struct kw *k;
1741
1742 p = yytext;
1743 *p++ = hash = c;
1744
1745 while (IDENTP (GET (*p)))
1746 {
1747 hash = (hash << 1) ^ *p++;
1748 if (p == yytext_end - 1)
1749 {
1750 int size = yytext_end - yytext;
1751 yytext = (char *) xrealloc (yytext, 2 * size);
1752 yytext_end = yytext + 2 * size;
1753 p = yytext + size - 1;
1754 }
1755 }
1756
1757 UNGET ();
1758 *p = 0;
1759
1760 for (k = keyword_table[hash % KEYWORD_TABLE_SIZE]; k; k = k->next)
1761 if (streq (k->name, yytext))
1762 return k->tk;
1763
1764 return IDENT;
1765 }
1766
1767 case '/':
1768 /* C and C++ comments, '/' and '/='. */
1769 switch (GET (c))
1770 {
1771 case '*':
1772 while (GET (c))
1773 {
1774 switch (c)
1775 {
1776 case '*':
1777 if (GET (c) == '/')
1778 goto comment_end;
1779 UNGET ();
1780 break;
1781 case '\\':
1782 GET (c);
1783 break;
1784 case '\n':
1785 INCREMENT_LINENO;
1786 break;
1787 }
1788 }
1789 comment_end:;
1790 break;
1791
1792 case '=':
1793 return DIVASGN;
1794
1795 case '/':
1796 while (GET (c) && c != '\n')
1797 ;
1798 INCREMENT_LINENO;
1799 break;
1800
1801 default:
1802 UNGET ();
1803 return '/';
1804 }
1805 break;
1806
1807 case '+':
1808 if (GET (c) == '+')
1809 return INC;
1810 else if (c == '=')
1811 return ADDASGN;
1812 UNGET ();
1813 return '+';
1814
1815 case '-':
1816 switch (GET (c))
1817 {
1818 case '-':
1819 return DEC;
1820 case '>':
1821 if (GET (c) == '*')
1822 return ARROWSTAR;
1823 UNGET ();
1824 return ARROW;
1825 case '=':
1826 return SUBASGN;
1827 }
1828 UNGET ();
1829 return '-';
1830
1831 case '*':
1832 if (GET (c) == '=')
1833 return MULASGN;
1834 UNGET ();
1835 return '*';
1836
1837 case '%':
1838 if (GET (c) == '=')
1839 return MODASGN;
1840 UNGET ();
1841 return '%';
1842
1843 case '|':
1844 if (GET (c) == '|')
1845 return LOR;
1846 else if (c == '=')
1847 return ORASGN;
1848 UNGET ();
1849 return '|';
1850
1851 case '&':
1852 if (GET (c) == '&')
1853 return LAND;
1854 else if (c == '=')
1855 return ANDASGN;
1856 UNGET ();
1857 return '&';
1858
1859 case '^':
1860 if (GET (c) == '=')
1861 return XORASGN;
1862 UNGET ();
1863 return '^';
1864
1865 case '.':
1866 if (GET (c) == '*')
1867 return POINTSTAR;
1868 else if (c == '.')
1869 {
1870 if (GET (c) != '.')
1871 yyerror ("invalid token '..' ('...' assumed)", NULL);
1872 UNGET ();
1873 return ELLIPSIS;
1874 }
1875 else if (!DIGITP (c))
1876 {
1877 UNGET ();
1878 return '.';
1879 }
1880 goto mantissa;
1881
1882 case ':':
1883 if (GET (c) == ':')
1884 return DCOLON;
1885 UNGET ();
1886 return ':';
1887
1888 case '=':
1889 if (GET (c) == '=')
1890 return EQ;
1891 UNGET ();
1892 return '=';
1893
1894 case '!':
1895 if (GET (c) == '=')
1896 return NE;
1897 UNGET ();
1898 return '!';
1899
1900 case '<':
1901 switch (GET (c))
1902 {
1903 case '=':
1904 return LE;
1905 case '<':
1906 if (GET (c) == '=')
1907 return LSHIFTASGN;
1908 UNGET ();
1909 return LSHIFT;
1910 }
1911 UNGET ();
1912 return '<';
1913
1914 case '>':
1915 switch (GET (c))
1916 {
1917 case '=':
1918 return GE;
1919 case '>':
1920 if (GET (c) == '=')
1921 return RSHIFTASGN;
1922 UNGET ();
1923 return RSHIFT;
1924 }
1925 UNGET ();
1926 return '>';
1927
1928 case '#':
1929 c = process_pp_line ();
1930 if (c == 0)
1931 return YYEOF;
1932 break;
1933
1934 case '(': case ')': case '[': case ']': case '{': case '}':
1935 case ';': case ',': case '?': case '~':
1936 return c;
1937
1938 case '0':
1939 yyival = 0;
1940
1941 if (GET (c) == 'x' || c == 'X')
1942 {
1943 while (GET (c))
1944 {
1945 if (DIGITP (c))
1946 yyival = yyival * 16 + c - '0';
1947 else if (c >= 'a' && c <= 'f')
1948 yyival = yyival * 16 + c - 'a' + 10;
1949 else if (c >= 'A' && c <= 'F')
1950 yyival = yyival * 16 + c - 'A' + 10;
1951 else
1952 break;
1953 }
1954
1955 goto int_suffixes;
1956 }
1957 else if (c == '.')
1958 goto mantissa;
1959
1960 while (c >= '0' && c <= '7')
1961 {
1962 yyival = (yyival << 3) + c - '0';
1963 GET (c);
1964 }
1965
1966 int_suffixes:
1967 /* Integer suffixes. */
1968 while (isalpha (c))
1969 GET (c);
1970 UNGET ();
1971 return CINT;
1972
1973 case '1': case '2': case '3': case '4': case '5': case '6':
1974 case '7': case '8': case '9':
1975 /* Integer or floating constant, part before '.'. */
1976 yyival = c - '0';
1977
1978 while (GET (c) && DIGITP (c))
1979 yyival = 10 * yyival + c - '0';
1980
1981 if (c != '.')
1982 goto int_suffixes;
1983
1984 mantissa:
1985 /* Digits following '.'. */
1986 while (DIGITP (c))
1987 GET (c);
1988
1989 /* Optional exponent. */
1990 if (c == 'E' || c == 'e')
1991 {
1992 if (GET (c) == '-' || c == '+')
1993 GET (c);
1994
1995 while (DIGITP (c))
1996 GET (c);
1997 }
1998
1999 /* Optional type suffixes. */
2000 while (isalpha (c))
2001 GET (c);
2002 UNGET ();
2003 return CFLOAT;
2004
2005 default:
2006 break;
2007 }
2008 }
2009 }
2010
2011
2012 /* Actually local to matching_regexp. These variables must be in
2013 global scope for the case that `static' get's defined away. */
2014
2015 static char *matching_regexp_buffer, *matching_regexp_end_buf;
2016
2017
2018 /* Value is the string from the start of the line to the current
2019 position in the input buffer, or maybe a bit more if that string is
2020 shorter than min_regexp. */
2021
2022 char *
2023 matching_regexp ()
2024 {
2025 char *p;
2026 char *s;
2027 char *t;
2028
2029 if (!f_regexps)
2030 return NULL;
2031
2032 if (matching_regexp_buffer == NULL)
2033 {
2034 matching_regexp_buffer = (char *) xmalloc (max_regexp);
2035 matching_regexp_end_buf = &matching_regexp_buffer[max_regexp] - 1;
2036 }
2037
2038 /* Scan back to previous newline of buffer start. */
2039 for (p = in - 1; p > inbuffer && *p != '\n'; --p)
2040 ;
2041
2042 if (*p == '\n')
2043 {
2044 while (in - p < min_regexp && p > inbuffer)
2045 {
2046 /* Line probably not significant enough */
2047 for (--p; p >= inbuffer && *p != '\n'; --p)
2048 ;
2049 }
2050 if (*p == '\n')
2051 ++p;
2052 }
2053
2054 /* Copy from end to make sure significant portions are included.
2055 This implies that in the browser a regular expressing of the form
2056 `^.*{regexp}' has to be used. */
2057 for (s = matching_regexp_end_buf - 1, t = in;
2058 s > matching_regexp_buffer && t > p;)
2059 {
2060 *--s = *--t;
2061
2062 if (*s == '"' || *s == '\\')
2063 *--s = '\\';
2064 }
2065
2066 *(matching_regexp_end_buf - 1) = '\0';
2067 return xstrdup (s);
2068 }
2069
2070
2071 /* Return a printable representation of token T. */
2072
2073 char *
2074 token_string (t)
2075 int t;
2076 {
2077 static char b[3];
2078
2079 switch (t)
2080 {
2081 case CSTRING: return "string constant";
2082 case CCHAR: return "char constant";
2083 case CINT: return "int constant";
2084 case CFLOAT: return "floating constant";
2085 case ELLIPSIS: return "...";
2086 case LSHIFTASGN: return "<<=";
2087 case RSHIFTASGN: return ">>=";
2088 case ARROWSTAR: return "->*";
2089 case IDENT: return "identifier";
2090 case DIVASGN: return "/=";
2091 case INC: return "++";
2092 case ADDASGN: return "+=";
2093 case DEC: return "--";
2094 case ARROW: return "->";
2095 case SUBASGN: return "-=";
2096 case MULASGN: return "*=";
2097 case MODASGN: return "%=";
2098 case LOR: return "||";
2099 case ORASGN: return "|=";
2100 case LAND: return "&&";
2101 case ANDASGN: return "&=";
2102 case XORASGN: return "^=";
2103 case POINTSTAR: return ".*";
2104 case DCOLON: return "::";
2105 case EQ: return "==";
2106 case NE: return "!=";
2107 case LE: return "<=";
2108 case LSHIFT: return "<<";
2109 case GE: return ">=";
2110 case RSHIFT: return ">>";
2111 case ASM: return "asm";
2112 case AUTO: return "auto";
2113 case BREAK: return "break";
2114 case CASE: return "case";
2115 case CATCH: return "catch";
2116 case CHAR: return "char";
2117 case CLASS: return "class";
2118 case CONST: return "const";
2119 case CONTINUE: return "continue";
2120 case DEFAULT: return "default";
2121 case DELETE: return "delete";
2122 case DO: return "do";
2123 case DOUBLE: return "double";
2124 case ELSE: return "else";
2125 case ENUM: return "enum";
2126 case EXTERN: return "extern";
2127 case FLOAT: return "float";
2128 case FOR: return "for";
2129 case FRIEND: return "friend";
2130 case GOTO: return "goto";
2131 case IF: return "if";
2132 case T_INLINE: return "inline";
2133 case INT: return "int";
2134 case LONG: return "long";
2135 case NEW: return "new";
2136 case OPERATOR: return "operator";
2137 case PRIVATE: return "private";
2138 case PROTECTED: return "protected";
2139 case PUBLIC: return "public";
2140 case REGISTER: return "register";
2141 case RETURN: return "return";
2142 case SHORT: return "short";
2143 case SIGNED: return "signed";
2144 case SIZEOF: return "sizeof";
2145 case STATIC: return "static";
2146 case STRUCT: return "struct";
2147 case SWITCH: return "switch";
2148 case TEMPLATE: return "template";
2149 case THIS: return "this";
2150 case THROW: return "throw";
2151 case TRY: return "try";
2152 case TYPEDEF: return "typedef";
2153 case UNION: return "union";
2154 case UNSIGNED: return "unsigned";
2155 case VIRTUAL: return "virtual";
2156 case VOID: return "void";
2157 case VOLATILE: return "volatile";
2158 case WHILE: return "while";
2159 case MUTABLE: return "mutable";
2160 case BOOL: return "bool";
2161 case TRUE: return "true";
2162 case FALSE: return "false";
2163 case SIGNATURE: return "signature";
2164 case NAMESPACE: return "namespace";
2165 case EXPLICIT: return "explicit";
2166 case TYPENAME: return "typename";
2167 case CONST_CAST: return "const_cast";
2168 case DYNAMIC_CAST: return "dynamic_cast";
2169 case REINTERPRET_CAST: return "reinterpret_cast";
2170 case STATIC_CAST: return "static_cast";
2171 case TYPEID: return "typeid";
2172 case USING: return "using";
2173 case WCHAR: return "wchar_t";
2174 case YYEOF: return "EOF";
2175
2176 default:
2177 if (t < 255)
2178 {
2179 b[0] = t;
2180 b[1] = '\0';
2181 return b;
2182 }
2183 else
2184 return "???";
2185 }
2186 }
2187
2188
2189 /* Reinitialize the scanner for a new input file. */
2190
2191 void
2192 re_init_scanner ()
2193 {
2194 in = inbuffer;
2195 yyline = 1;
2196
2197 if (yytext == NULL)
2198 {
2199 int size = 256;
2200 yytext = (char *) xmalloc (size * sizeof *yytext);
2201 yytext_end = yytext + size;
2202 }
2203 }
2204
2205
2206 /* Insert a keyword NAME with token value TK into the keyword hash
2207 table. */
2208
2209 void
2210 insert_keyword (name, tk)
2211 char *name;
2212 int tk;
2213 {
2214 char *s;
2215 unsigned h = 0;
2216 struct kw *k = (struct kw *) xmalloc (sizeof *k);
2217
2218 for (s = name; *s; ++s)
2219 h = (h << 1) ^ *s;
2220
2221 h %= KEYWORD_TABLE_SIZE;
2222 k->name = name;
2223 k->tk = tk;
2224 k->next = keyword_table[h];
2225 keyword_table[h] = k;
2226 }
2227
2228
2229 /* Initialize the scanner for the first file. This sets up the
2230 character class vectors and fills the keyword hash table. */
2231
2232 void
2233 init_scanner ()
2234 {
2235 int i;
2236
2237 /* Allocate the input buffer */
2238 inbuffer_size = READ_CHUNK_SIZE + 1;
2239 inbuffer = in = (char *) xmalloc (inbuffer_size);
2240 yyline = 1;
2241
2242 /* Set up character class vectors. */
2243 for (i = 0; i < sizeof is_ident; ++i)
2244 {
2245 if (i == '_' || isalnum (i))
2246 is_ident[i] = 1;
2247
2248 if (i >= '0' && i <= '9')
2249 is_digit[i] = 1;
2250
2251 if (i == ' ' || i == '\t' || i == '\f' || i == '\v')
2252 is_white[i] = 1;
2253 }
2254
2255 /* Fill keyword hash table. */
2256 insert_keyword ("and", LAND);
2257 insert_keyword ("and_eq", ANDASGN);
2258 insert_keyword ("asm", ASM);
2259 insert_keyword ("auto", AUTO);
2260 insert_keyword ("bitand", '&');
2261 insert_keyword ("bitor", '|');
2262 insert_keyword ("bool", BOOL);
2263 insert_keyword ("break", BREAK);
2264 insert_keyword ("case", CASE);
2265 insert_keyword ("catch", CATCH);
2266 insert_keyword ("char", CHAR);
2267 insert_keyword ("class", CLASS);
2268 insert_keyword ("compl", '~');
2269 insert_keyword ("const", CONST);
2270 insert_keyword ("const_cast", CONST_CAST);
2271 insert_keyword ("continue", CONTINUE);
2272 insert_keyword ("default", DEFAULT);
2273 insert_keyword ("delete", DELETE);
2274 insert_keyword ("do", DO);
2275 insert_keyword ("double", DOUBLE);
2276 insert_keyword ("dynamic_cast", DYNAMIC_CAST);
2277 insert_keyword ("else", ELSE);
2278 insert_keyword ("enum", ENUM);
2279 insert_keyword ("explicit", EXPLICIT);
2280 insert_keyword ("extern", EXTERN);
2281 insert_keyword ("false", FALSE);
2282 insert_keyword ("float", FLOAT);
2283 insert_keyword ("for", FOR);
2284 insert_keyword ("friend", FRIEND);
2285 insert_keyword ("goto", GOTO);
2286 insert_keyword ("if", IF);
2287 insert_keyword ("inline", T_INLINE);
2288 insert_keyword ("int", INT);
2289 insert_keyword ("long", LONG);
2290 insert_keyword ("mutable", MUTABLE);
2291 insert_keyword ("namespace", NAMESPACE);
2292 insert_keyword ("new", NEW);
2293 insert_keyword ("not", '!');
2294 insert_keyword ("not_eq", NE);
2295 insert_keyword ("operator", OPERATOR);
2296 insert_keyword ("or", LOR);
2297 insert_keyword ("or_eq", ORASGN);
2298 insert_keyword ("private", PRIVATE);
2299 insert_keyword ("protected", PROTECTED);
2300 insert_keyword ("public", PUBLIC);
2301 insert_keyword ("register", REGISTER);
2302 insert_keyword ("reinterpret_cast", REINTERPRET_CAST);
2303 insert_keyword ("return", RETURN);
2304 insert_keyword ("short", SHORT);
2305 insert_keyword ("signed", SIGNED);
2306 insert_keyword ("sizeof", SIZEOF);
2307 insert_keyword ("static", STATIC);
2308 insert_keyword ("static_cast", STATIC_CAST);
2309 insert_keyword ("struct", STRUCT);
2310 insert_keyword ("switch", SWITCH);
2311 insert_keyword ("template", TEMPLATE);
2312 insert_keyword ("this", THIS);
2313 insert_keyword ("throw", THROW);
2314 insert_keyword ("true", TRUE);
2315 insert_keyword ("try", TRY);
2316 insert_keyword ("typedef", TYPEDEF);
2317 insert_keyword ("typeid", TYPEID);
2318 insert_keyword ("typename", TYPENAME);
2319 insert_keyword ("union", UNION);
2320 insert_keyword ("unsigned", UNSIGNED);
2321 insert_keyword ("using", USING);
2322 insert_keyword ("virtual", VIRTUAL);
2323 insert_keyword ("void", VOID);
2324 insert_keyword ("volatile", VOLATILE);
2325 insert_keyword ("wchar_t", WCHAR);
2326 insert_keyword ("while", WHILE);
2327 insert_keyword ("xor", '^');
2328 insert_keyword ("xor_eq", XORASGN);
2329 }
2330
2331
2332 \f
2333 /***********************************************************************
2334 Parser
2335 ***********************************************************************/
2336
2337 /* Match the current lookahead token and set it to the next token. */
2338
2339 #define MATCH() (tk = yylex ())
2340
2341 /* Return the lookahead token. If current lookahead token is cleared,
2342 read a new token. */
2343
2344 #define LA1 (tk == -1 ? (tk = yylex ()) : tk)
2345
2346 /* Is the current lookahead equal to the token T? */
2347
2348 #define LOOKING_AT(T) (tk == (T))
2349
2350 /* Is the current lookahead one of T1 or T2? */
2351
2352 #define LOOKING_AT2(T1, T2) (tk == (T1) || tk == (T2))
2353
2354 /* Is the current lookahead one of T1, T2 or T3? */
2355
2356 #define LOOKING_AT3(T1, T2, T3) (tk == (T1) || tk == (T2) || tk == (T3))
2357
2358 /* Is the current lookahead one of T1...T4? */
2359
2360 #define LOOKING_AT4(T1, T2, T3, T4) \
2361 (tk == (T1) || tk == (T2) || tk == (T3) || tk == (T4))
2362
2363 /* Match token T if current lookahead is T. */
2364
2365 #define MATCH_IF(T) if (LOOKING_AT (T)) MATCH (); else ((void) 0)
2366
2367 /* Skip to matching token if current token is T. */
2368
2369 #define SKIP_MATCHING_IF(T) \
2370 if (LOOKING_AT (T)) skip_matching (); else ((void) 0)
2371
2372
2373 /* Skip forward until a given token TOKEN or YYEOF is seen and return
2374 the current lookahead token after skipping. */
2375
2376 int
2377 skip_to (token)
2378 int token;
2379 {
2380 while (!LOOKING_AT2 (YYEOF, token))
2381 MATCH ();
2382 return tk;
2383 }
2384
2385 /* Skip over pairs of tokens (parentheses, square brackets,
2386 angle brackets, curly brackets) matching the current lookahead. */
2387
2388 void
2389 skip_matching ()
2390 {
2391 int open, close, n;
2392
2393 switch (open = LA1)
2394 {
2395 case '{':
2396 close = '}';
2397 break;
2398
2399 case '(':
2400 close = ')';
2401 break;
2402
2403 case '<':
2404 close = '>';
2405 break;
2406
2407 case '[':
2408 close = ']';
2409 break;
2410
2411 default:
2412 abort ();
2413 }
2414
2415 for (n = 0;;)
2416 {
2417 if (LOOKING_AT (open))
2418 ++n;
2419 else if (LOOKING_AT (close))
2420 --n;
2421 else if (LOOKING_AT (YYEOF))
2422 break;
2423
2424 MATCH ();
2425
2426 if (n == 0)
2427 break;
2428 }
2429 }
2430
2431 void
2432 skip_initializer ()
2433 {
2434 for (;;)
2435 {
2436 switch (LA1)
2437 {
2438 case ';':
2439 case ',':
2440 case YYEOF:
2441 return;
2442
2443 case '{':
2444 case '[':
2445 case '(':
2446 skip_matching ();
2447 break;
2448
2449 default:
2450 MATCH ();
2451 break;
2452 }
2453 }
2454 }
2455
2456 /* Build qualified namespace alias (A::B::c) and return it. */
2457
2458 struct link *
2459 match_qualified_namespace_alias ()
2460 {
2461 struct link *head = NULL;
2462 struct link *cur = NULL;
2463 struct link *tmp = NULL;
2464
2465 for (;;)
2466 {
2467 MATCH ();
2468 switch (LA1)
2469 {
2470 case IDENT:
2471 tmp = (struct link *) xmalloc (sizeof *cur);
2472 tmp->sym = find_namespace (yytext, cur);
2473 tmp->next = NULL;
2474 if (head)
2475 {
2476 cur = cur->next = tmp;
2477 }
2478 else
2479 {
2480 head = cur = tmp;
2481 }
2482 break;
2483 case DCOLON:
2484 /* Just skip */
2485 break;
2486 default:
2487 return head;
2488 break;
2489 }
2490 }
2491 }
2492
2493 /* Re-initialize the parser by resetting the lookahead token. */
2494
2495 void
2496 re_init_parser ()
2497 {
2498 tk = -1;
2499 }
2500
2501
2502 /* Parse a parameter list, including the const-specifier,
2503 pure-specifier, and throw-list that may follow a parameter list.
2504 Return in FLAGS what was seen following the parameter list.
2505 Returns a hash code for the parameter types. This value is used to
2506 distinguish between overloaded functions. */
2507
2508 unsigned
2509 parm_list (flags)
2510 int *flags;
2511 {
2512 unsigned hash = 0;
2513 int type_seen = 0;
2514
2515 while (!LOOKING_AT2 (YYEOF, ')'))
2516 {
2517 switch (LA1)
2518 {
2519 /* Skip over grouping parens or parameter lists in parameter
2520 declarations. */
2521 case '(':
2522 skip_matching ();
2523 break;
2524
2525 /* Next parameter. */
2526 case ',':
2527 MATCH ();
2528 type_seen = 0;
2529 break;
2530
2531 /* Ignore the scope part of types, if any. This is because
2532 some types need scopes when defined outside of a class body,
2533 and don't need them inside the class body. This means that
2534 we have to look for the last IDENT in a sequence of
2535 IDENT::IDENT::... */
2536 case IDENT:
2537 if (!type_seen)
2538 {
2539 char *last_id;
2540 unsigned ident_type_hash = 0;
2541
2542 parse_qualified_param_ident_or_type (&last_id);
2543 if (last_id)
2544 {
2545 /* LAST_ID null means something like `X::*'. */
2546 for (; *last_id; ++last_id)
2547 ident_type_hash = (ident_type_hash << 1) ^ *last_id;
2548 hash = (hash << 1) ^ ident_type_hash;
2549 type_seen = 1;
2550 }
2551 }
2552 else
2553 MATCH ();
2554 break;
2555
2556 case VOID:
2557 /* This distinction is made to make `func (void)' equivalent
2558 to `func ()'. */
2559 type_seen = 1;
2560 MATCH ();
2561 if (!LOOKING_AT (')'))
2562 hash = (hash << 1) ^ VOID;
2563 break;
2564
2565 case BOOL: case CHAR: case CLASS: case CONST:
2566 case DOUBLE: case ENUM: case FLOAT: case INT:
2567 case LONG: case SHORT: case SIGNED: case STRUCT:
2568 case UNION: case UNSIGNED: case VOLATILE: case WCHAR:
2569 case ELLIPSIS:
2570 type_seen = 1;
2571 hash = (hash << 1) ^ LA1;
2572 MATCH ();
2573 break;
2574
2575 case '*': case '&': case '[': case ']':
2576 hash = (hash << 1) ^ LA1;
2577 MATCH ();
2578 break;
2579
2580 default:
2581 MATCH ();
2582 break;
2583 }
2584 }
2585
2586 if (LOOKING_AT (')'))
2587 {
2588 MATCH ();
2589
2590 if (LOOKING_AT (CONST))
2591 {
2592 /* We can overload the same function on `const' */
2593 hash = (hash << 1) ^ CONST;
2594 SET_FLAG (*flags, F_CONST);
2595 MATCH ();
2596 }
2597
2598 if (LOOKING_AT (THROW))
2599 {
2600 MATCH ();
2601 SKIP_MATCHING_IF ('(');
2602 SET_FLAG (*flags, F_THROW);
2603 }
2604
2605 if (LOOKING_AT ('='))
2606 {
2607 MATCH ();
2608 if (LOOKING_AT (CINT) && yyival == 0)
2609 {
2610 MATCH ();
2611 SET_FLAG (*flags, F_PURE);
2612 }
2613 }
2614 }
2615
2616 return hash;
2617 }
2618
2619
2620 /* Print position info to stdout. */
2621
2622 void
2623 print_info ()
2624 {
2625 if (info_position >= 0 && BUFFER_POS () <= info_position)
2626 if (info_cls)
2627 printf ("(\"%s\" \"%s\" \"%s\" %d)\n",
2628 info_cls->name, sym_scope (info_cls),
2629 info_member->name, info_where);
2630 }
2631
2632
2633 /* Parse a member declaration within the class body of CLS. VIS is
2634 the access specifier for the member (private, protected,
2635 public). */
2636
2637 void
2638 member (cls, vis)
2639 struct sym *cls;
2640 int vis;
2641 {
2642 char *id = NULL;
2643 int sc = SC_MEMBER;
2644 char *regexp = NULL;
2645 int pos;
2646 int is_constructor;
2647 int anonymous = 0;
2648 int flags = 0;
2649 int class_tag;
2650 int type_seen = 0;
2651 int paren_seen = 0;
2652 unsigned hash = 0;
2653 int tilde = 0;
2654
2655 while (!LOOKING_AT4 (';', '{', '}', YYEOF))
2656 {
2657 switch (LA1)
2658 {
2659 default:
2660 MATCH ();
2661 break;
2662
2663 /* A function or class may follow. */
2664 case TEMPLATE:
2665 MATCH();
2666 SET_FLAG (flags, F_TEMPLATE);
2667 /* Skip over template argument list */
2668 SKIP_MATCHING_IF ('<');
2669 break;
2670
2671 case EXPLICIT:
2672 SET_FLAG (flags, F_EXPLICIT);
2673 goto typeseen;
2674
2675 case MUTABLE:
2676 SET_FLAG (flags, F_MUTABLE);
2677 goto typeseen;
2678
2679 case T_INLINE:
2680 SET_FLAG (flags, F_INLINE);
2681 goto typeseen;
2682
2683 case VIRTUAL:
2684 SET_FLAG (flags, F_VIRTUAL);
2685 goto typeseen;
2686
2687 case '[':
2688 skip_matching ();
2689 break;
2690
2691 case ENUM:
2692 sc = SC_TYPE;
2693 goto typeseen;
2694
2695 case TYPEDEF:
2696 sc = SC_TYPE;
2697 goto typeseen;
2698
2699 case FRIEND:
2700 sc = SC_FRIEND;
2701 goto typeseen;
2702
2703 case STATIC:
2704 sc = SC_STATIC;
2705 goto typeseen;
2706
2707 case '~':
2708 tilde = 1;
2709 MATCH ();
2710 break;
2711
2712 case IDENT:
2713 /* Remember IDENTS seen so far. Among these will be the member
2714 name. */
2715 id = (char *) xrealloc (id, strlen (yytext) + 2);
2716 if (tilde)
2717 {
2718 *id = '~';
2719 strcpy (id + 1, yytext);
2720 }
2721 else
2722 strcpy (id, yytext);
2723 MATCH ();
2724 break;
2725
2726 case OPERATOR:
2727 {
2728 char *s = operator_name (&sc);
2729 id = (char *) xrealloc (id, strlen (s) + 1);
2730 strcpy (id, s);
2731 }
2732 break;
2733
2734 case '(':
2735 /* Most probably the beginning of a parameter list. */
2736 MATCH ();
2737 paren_seen = 1;
2738
2739 if (id && cls)
2740 {
2741 if (!(is_constructor = streq (id, cls->name)))
2742 regexp = matching_regexp ();
2743 }
2744 else
2745 is_constructor = 0;
2746
2747 pos = BUFFER_POS ();
2748 hash = parm_list (&flags);
2749
2750 if (is_constructor)
2751 regexp = matching_regexp ();
2752
2753 if (id && cls != NULL)
2754 add_member_decl (cls, id, regexp, pos, hash, 0, sc, vis, flags);
2755
2756 while (!LOOKING_AT3 (';', '{', YYEOF))
2757 MATCH ();
2758
2759 if (LOOKING_AT ('{') && id && cls)
2760 add_member_defn (cls, id, regexp, pos, hash, 0, sc, flags);
2761
2762 xfree (id);
2763 id = NULL;
2764 sc = SC_MEMBER;
2765 break;
2766
2767 case STRUCT: case UNION: case CLASS:
2768 /* Nested class */
2769 class_tag = LA1;
2770 type_seen = 1;
2771 MATCH ();
2772 anonymous = 1;
2773
2774 /* More than one ident here to allow for MS-DOS specialties
2775 like `_export class' etc. The last IDENT seen counts
2776 as the class name. */
2777 while (!LOOKING_AT4 (YYEOF, ';', ':', '{'))
2778 {
2779 if (LOOKING_AT (IDENT))
2780 anonymous = 0;
2781 MATCH ();
2782 }
2783
2784 if (LOOKING_AT2 (':', '{'))
2785 class_definition (anonymous ? NULL : cls, class_tag, flags, 1);
2786 else
2787 skip_to (';');
2788 break;
2789
2790 case INT: case CHAR: case LONG: case UNSIGNED:
2791 case SIGNED: case CONST: case DOUBLE: case VOID:
2792 case SHORT: case VOLATILE: case BOOL: case WCHAR:
2793 case TYPENAME:
2794 typeseen:
2795 type_seen = 1;
2796 MATCH ();
2797 break;
2798 }
2799 }
2800
2801 if (LOOKING_AT (';'))
2802 {
2803 /* The end of a member variable, a friend declaration or an access
2804 declaration. We don't want to add friend classes as members. */
2805 if (id && sc != SC_FRIEND && cls)
2806 {
2807 regexp = matching_regexp ();
2808 pos = BUFFER_POS ();
2809
2810 if (cls != NULL)
2811 {
2812 if (type_seen || !paren_seen)
2813 add_member_decl (cls, id, regexp, pos, 0, 1, sc, vis, 0);
2814 else
2815 add_member_decl (cls, id, regexp, pos, hash, 0, sc, vis, 0);
2816 }
2817 }
2818
2819 MATCH ();
2820 print_info ();
2821 }
2822 else if (LOOKING_AT ('{'))
2823 {
2824 /* A named enum. */
2825 if (sc == SC_TYPE && id && cls)
2826 {
2827 regexp = matching_regexp ();
2828 pos = BUFFER_POS ();
2829
2830 if (cls != NULL)
2831 {
2832 add_member_decl (cls, id, regexp, pos, 0, 1, sc, vis, 0);
2833 add_member_defn (cls, id, regexp, pos, 0, 1, sc, 0);
2834 }
2835 }
2836
2837 skip_matching ();
2838 print_info ();
2839 }
2840
2841 xfree (id);
2842 }
2843
2844
2845 /* Parse the body of class CLS. TAG is the tag of the class (struct,
2846 union, class). */
2847
2848 void
2849 class_body (cls, tag)
2850 struct sym *cls;
2851 int tag;
2852 {
2853 int vis = tag == CLASS ? PRIVATE : PUBLIC;
2854 int temp;
2855
2856 while (!LOOKING_AT2 (YYEOF, '}'))
2857 {
2858 switch (LA1)
2859 {
2860 case PRIVATE: case PROTECTED: case PUBLIC:
2861 temp = LA1;
2862 MATCH ();
2863
2864 if (LOOKING_AT (':'))
2865 {
2866 vis = temp;
2867 MATCH ();
2868 }
2869 else
2870 {
2871 /* Probably conditional compilation for inheritance list.
2872 We don't known whether there comes more of this.
2873 This is only a crude fix that works most of the time. */
2874 do
2875 {
2876 MATCH ();
2877 }
2878 while (LOOKING_AT2 (IDENT, ',')
2879 || LOOKING_AT3 (PUBLIC, PROTECTED, PRIVATE));
2880 }
2881 break;
2882
2883 case TYPENAME:
2884 case USING:
2885 skip_to (';');
2886 break;
2887
2888 /* Try to synchronize */
2889 case CHAR: case CLASS: case CONST:
2890 case DOUBLE: case ENUM: case FLOAT: case INT:
2891 case LONG: case SHORT: case SIGNED: case STRUCT:
2892 case UNION: case UNSIGNED: case VOID: case VOLATILE:
2893 case TYPEDEF: case STATIC: case T_INLINE: case FRIEND:
2894 case VIRTUAL: case TEMPLATE: case IDENT: case '~':
2895 case BOOL: case WCHAR: case EXPLICIT: case MUTABLE:
2896 member (cls, vis);
2897 break;
2898
2899 default:
2900 MATCH ();
2901 break;
2902 }
2903 }
2904 }
2905
2906
2907 /* Parse a qualified identifier. Current lookahead is IDENT. A
2908 qualified ident has the form `X<..>::Y<...>::T<...>. Returns a
2909 symbol for that class. */
2910
2911 struct sym *
2912 parse_classname ()
2913 {
2914 struct sym *last_class = NULL;
2915
2916 while (LOOKING_AT (IDENT))
2917 {
2918 last_class = add_sym (yytext, last_class);
2919 MATCH ();
2920
2921 if (LOOKING_AT ('<'))
2922 {
2923 skip_matching ();
2924 SET_FLAG (last_class->flags, F_TEMPLATE);
2925 }
2926
2927 if (!LOOKING_AT (DCOLON))
2928 break;
2929
2930 MATCH ();
2931 }
2932
2933 return last_class;
2934 }
2935
2936
2937 /* Parse an operator name. Add the `static' flag to *SC if an
2938 implicitly static operator has been parsed. Value is a pointer to
2939 a static buffer holding the constructed operator name string. */
2940
2941 char *
2942 operator_name (sc)
2943 int *sc;
2944 {
2945 static int id_size = 0;
2946 static char *id = NULL;
2947 char *s;
2948 int len;
2949
2950 MATCH ();
2951
2952 if (LOOKING_AT2 (NEW, DELETE))
2953 {
2954 /* `new' and `delete' are implicitly static. */
2955 if (*sc != SC_FRIEND)
2956 *sc = SC_STATIC;
2957
2958 s = token_string (LA1);
2959 MATCH ();
2960
2961 len = strlen (s) + 10;
2962 if (len > id_size)
2963 {
2964 int new_size = max (len, 2 * id_size);
2965 id = (char *) xrealloc (id, new_size);
2966 id_size = new_size;
2967 }
2968 strcpy (id, s);
2969
2970 /* Vector new or delete? */
2971 if (LOOKING_AT ('['))
2972 {
2973 strcat (id, "[");
2974 MATCH ();
2975
2976 if (LOOKING_AT (']'))
2977 {
2978 strcat (id, "]");
2979 MATCH ();
2980 }
2981 }
2982 }
2983 else
2984 {
2985 int tokens_matched = 0;
2986
2987 len = 20;
2988 if (len > id_size)
2989 {
2990 int new_size = max (len, 2 * id_size);
2991 id = (char *) xrealloc (id, new_size);
2992 id_size = new_size;
2993 }
2994 strcpy (id, "operator");
2995
2996 /* Beware access declarations of the form "X::f;" Beware of
2997 `operator () ()'. Yet another difficulty is found in
2998 GCC 2.95's STL: `operator == __STL_NULL_TMPL_ARGS (...'. */
2999 while (!(LOOKING_AT ('(') && tokens_matched)
3000 && !LOOKING_AT2 (';', YYEOF))
3001 {
3002 s = token_string (LA1);
3003 len += strlen (s) + 2;
3004 if (len > id_size)
3005 {
3006 int new_size = max (len, 2 * id_size);
3007 id = (char *) xrealloc (id, new_size);
3008 id_size = new_size;
3009 }
3010
3011 if (*s != ')' && *s != ']')
3012 strcat (id, " ");
3013 strcat (id, s);
3014 MATCH ();
3015
3016 /* If this is a simple operator like `+', stop now. */
3017 if (!isalpha ((unsigned char) *s) && *s != '(' && *s != '[')
3018 break;
3019
3020 ++tokens_matched;
3021 }
3022 }
3023
3024 return id;
3025 }
3026
3027
3028 /* This one consumes the last IDENT of a qualified member name like
3029 `X::Y::z'. This IDENT is returned in LAST_ID. Value is the
3030 symbol structure for the ident. */
3031
3032 struct sym *
3033 parse_qualified_ident_or_type (last_id)
3034 char **last_id;
3035 {
3036 struct sym *cls = NULL;
3037 char *id = NULL;
3038 size_t id_size = 0;
3039 int enter = 0;
3040
3041 while (LOOKING_AT (IDENT))
3042 {
3043 int len = strlen (yytext) + 1;
3044 if (len > id_size)
3045 {
3046 id = (char *) xrealloc (id, len);
3047 id_size = len;
3048 }
3049 strcpy (id, yytext);
3050 *last_id = id;
3051 MATCH ();
3052
3053 SKIP_MATCHING_IF ('<');
3054
3055 if (LOOKING_AT (DCOLON))
3056 {
3057 struct sym *pcn = NULL;
3058 struct link *pna = check_namespace_alias (id);
3059 if (pna)
3060 {
3061 do
3062 {
3063 enter_namespace (pna->sym->name);
3064 enter++;
3065 pna = pna->next;
3066 }
3067 while (pna);
3068 }
3069 else if ((pcn = check_namespace (id, current_namespace)))
3070 {
3071 enter_namespace (pcn->name);
3072 enter++;
3073 }
3074 else
3075 cls = add_sym (id, cls);
3076
3077 *last_id = NULL;
3078 xfree (id);
3079 id = NULL;
3080 id_size = 0;
3081 MATCH ();
3082 }
3083 else
3084 break;
3085 }
3086
3087 while (enter--)
3088 leave_namespace();
3089
3090 return cls;
3091 }
3092
3093
3094 /* This one consumes the last IDENT of a qualified member name like
3095 `X::Y::z'. This IDENT is returned in LAST_ID. Value is the
3096 symbol structure for the ident. */
3097
3098 void
3099 parse_qualified_param_ident_or_type (last_id)
3100 char **last_id;
3101 {
3102 struct sym *cls = NULL;
3103 static char *id = NULL;
3104 static int id_size = 0;
3105
3106 while (LOOKING_AT (IDENT))
3107 {
3108 int len = strlen (yytext) + 1;
3109 if (len > id_size)
3110 {
3111 id = (char *) xrealloc (id, len);
3112 id_size = len;
3113 }
3114 strcpy (id, yytext);
3115 *last_id = id;
3116 MATCH ();
3117
3118 SKIP_MATCHING_IF ('<');
3119
3120 if (LOOKING_AT (DCOLON))
3121 {
3122 cls = add_sym (id, cls);
3123 *last_id = NULL;
3124 MATCH ();
3125 }
3126 else
3127 break;
3128 }
3129 }
3130
3131
3132 /* Parse a class definition.
3133
3134 CONTAINING is the class containing the class being parsed or null.
3135 This may also be null if NESTED != 0 if the containing class is
3136 anonymous. TAG is the tag of the class (struct, union, class).
3137 NESTED is non-zero if we are parsing a nested class.
3138
3139 Current lookahead is the class name. */
3140
3141 void
3142 class_definition (containing, tag, flags, nested)
3143 struct sym *containing;
3144 int tag;
3145 int flags;
3146 int nested;
3147 {
3148 struct sym *current;
3149 struct sym *base_class;
3150
3151 /* Set CURRENT to null if no entry has to be made for the class
3152 parsed. This is the case for certain command line flag
3153 settings. */
3154 if ((tag != CLASS && !f_structs) || (nested && !f_nested_classes))
3155 current = NULL;
3156 else
3157 {
3158 current = add_sym (yytext, containing);
3159 current->pos = BUFFER_POS ();
3160 current->regexp = matching_regexp ();
3161 current->filename = filename;
3162 current->flags = flags;
3163 }
3164
3165 /* If at ':', base class list follows. */
3166 if (LOOKING_AT (':'))
3167 {
3168 int done = 0;
3169 MATCH ();
3170
3171 while (!done)
3172 {
3173 switch (LA1)
3174 {
3175 case VIRTUAL: case PUBLIC: case PROTECTED: case PRIVATE:
3176 MATCH ();
3177 break;
3178
3179 case IDENT:
3180 base_class = parse_classname ();
3181 if (base_class && current && base_class != current)
3182 add_link (base_class, current);
3183 break;
3184
3185 /* The `,' between base classes or the end of the base
3186 class list. Add the previously found base class.
3187 It's done this way to skip over sequences of
3188 `A::B::C' until we reach the end.
3189
3190 FIXME: it is now possible to handle `class X : public B::X'
3191 because we have enough information. */
3192 case ',':
3193 MATCH ();
3194 break;
3195
3196 default:
3197 /* A syntax error, possibly due to preprocessor constructs
3198 like
3199
3200 #ifdef SOMETHING
3201 class A : public B
3202 #else
3203 class A : private B.
3204
3205 MATCH until we see something like `;' or `{'. */
3206 while (!LOOKING_AT3 (';', YYEOF, '{'))
3207 MATCH ();
3208 done = 1;
3209
3210 case '{':
3211 done = 1;
3212 break;
3213 }
3214 }
3215 }
3216
3217 /* Parse the class body if there is one. */
3218 if (LOOKING_AT ('{'))
3219 {
3220 if (tag != CLASS && !f_structs)
3221 skip_matching ();
3222 else
3223 {
3224 MATCH ();
3225 class_body (current, tag);
3226
3227 if (LOOKING_AT ('}'))
3228 {
3229 MATCH ();
3230 if (LOOKING_AT (';') && !nested)
3231 MATCH ();
3232 }
3233 }
3234 }
3235 }
3236
3237 /* Add to class *CLS information for the declaration of variable or
3238 type *ID. If *CLS is null, this means a global declaration. SC is
3239 the storage class of *ID. FLAGS is a bit set giving additional
3240 information about the member (see the F_* defines). */
3241
3242 void
3243 add_declarator (cls, id, flags, sc)
3244 struct sym **cls;
3245 char **id;
3246 int flags, sc;
3247 {
3248 if (LOOKING_AT2 (';', ','))
3249 {
3250 /* The end of a member variable or of an access declaration
3251 `X::f'. To distinguish between them we have to know whether
3252 type information has been seen. */
3253 if (*id)
3254 {
3255 char *regexp = matching_regexp ();
3256 int pos = BUFFER_POS ();
3257
3258 if (*cls)
3259 add_member_defn (*cls, *id, regexp, pos, 0, 1, SC_UNKNOWN, flags);
3260 else
3261 add_global_defn (*id, regexp, pos, 0, 1, sc, flags);
3262 }
3263
3264 MATCH ();
3265 print_info ();
3266 }
3267 else if (LOOKING_AT ('{'))
3268 {
3269 if (sc == SC_TYPE && *id)
3270 {
3271 /* A named enumeration. */
3272 char *regexp = matching_regexp ();
3273 int pos = BUFFER_POS ();
3274 add_global_defn (*id, regexp, pos, 0, 1, sc, flags);
3275 }
3276
3277 skip_matching ();
3278 print_info ();
3279 }
3280
3281 xfree (*id);
3282 *id = NULL;
3283 *cls = NULL;
3284 }
3285
3286 /* Parse a declaration. */
3287
3288 void
3289 declaration (flags)
3290 int flags;
3291 {
3292 char *id = NULL;
3293 struct sym *cls = NULL;
3294 char *regexp = NULL;
3295 int pos = 0;
3296 unsigned hash = 0;
3297 int is_constructor;
3298 int sc = 0;
3299
3300 while (!LOOKING_AT3 (';', '{', YYEOF))
3301 {
3302 switch (LA1)
3303 {
3304 default:
3305 MATCH ();
3306 break;
3307
3308 case '[':
3309 skip_matching ();
3310 break;
3311
3312 case ENUM:
3313 case TYPEDEF:
3314 sc = SC_TYPE;
3315 MATCH ();
3316 break;
3317
3318 case STATIC:
3319 sc = SC_STATIC;
3320 MATCH ();
3321 break;
3322
3323 case INT: case CHAR: case LONG: case UNSIGNED:
3324 case SIGNED: case CONST: case DOUBLE: case VOID:
3325 case SHORT: case VOLATILE: case BOOL: case WCHAR:
3326 MATCH ();
3327 break;
3328
3329 case CLASS: case STRUCT: case UNION:
3330 /* This is for the case `STARTWRAP class X : ...' or
3331 `declare (X, Y)\n class A : ...'. */
3332 if (id)
3333 {
3334 xfree (id);
3335 return;
3336 }
3337
3338 case '=':
3339 /* Assumed to be the start of an initialization in this
3340 context. */
3341 skip_initializer ();
3342 break;
3343
3344 case ',':
3345 add_declarator (&cls, &id, flags, sc);
3346 break;
3347
3348 case OPERATOR:
3349 {
3350 char *s = operator_name (&sc);
3351 id = (char *) xrealloc (id, strlen (s) + 1);
3352 strcpy (id, s);
3353 }
3354 break;
3355
3356 case T_INLINE:
3357 SET_FLAG (flags, F_INLINE);
3358 MATCH ();
3359 break;
3360
3361 case '~':
3362 MATCH ();
3363 if (LOOKING_AT (IDENT))
3364 {
3365 id = (char *) xrealloc (id, strlen (yytext) + 2);
3366 *id = '~';
3367 strcpy (id + 1, yytext);
3368 MATCH ();
3369 }
3370 break;
3371
3372 case IDENT:
3373 cls = parse_qualified_ident_or_type (&id);
3374 break;
3375
3376 case '(':
3377 /* Most probably the beginning of a parameter list. */
3378 if (cls)
3379 {
3380 MATCH ();
3381
3382 if (id && cls)
3383 {
3384 if (!(is_constructor = streq (id, cls->name)))
3385 regexp = matching_regexp ();
3386 }
3387 else
3388 is_constructor = 0;
3389
3390 pos = BUFFER_POS ();
3391 hash = parm_list (&flags);
3392
3393 if (is_constructor)
3394 regexp = matching_regexp ();
3395
3396 if (id && cls)
3397 add_member_defn (cls, id, regexp, pos, hash, 0,
3398 SC_UNKNOWN, flags);
3399 }
3400 else
3401 {
3402 /* This may be a C functions, but also a macro
3403 call of the form `declare (A, B)' --- such macros
3404 can be found in some class libraries. */
3405 MATCH ();
3406
3407 if (id)
3408 {
3409 regexp = matching_regexp ();
3410 pos = BUFFER_POS ();
3411 hash = parm_list (&flags);
3412 add_global_decl (id, regexp, pos, hash, 0, sc, flags);
3413 }
3414
3415 /* This is for the case that the function really is
3416 a macro with no `;' following it. If a CLASS directly
3417 follows, we would miss it otherwise. */
3418 if (LOOKING_AT3 (CLASS, STRUCT, UNION))
3419 return;
3420 }
3421
3422 while (!LOOKING_AT3 (';', '{', YYEOF))
3423 MATCH ();
3424
3425 if (!cls && id && LOOKING_AT ('{'))
3426 add_global_defn (id, regexp, pos, hash, 0, sc, flags);
3427
3428 xfree (id);
3429 id = NULL;
3430 break;
3431 }
3432 }
3433
3434 add_declarator (&cls, &id, flags, sc);
3435 }
3436
3437
3438 /* Parse a list of top-level declarations/definitions. START_FLAGS
3439 says in which context we are parsing. If it is F_EXTERNC, we are
3440 parsing in an `extern "C"' block. Value is 1 if EOF is reached, 0
3441 otherwise. */
3442
3443 int
3444 globals (start_flags)
3445 int start_flags;
3446 {
3447 int anonymous;
3448 int class_tk;
3449 int flags = start_flags;
3450
3451 for (;;)
3452 {
3453 char *prev_in = in;
3454
3455 switch (LA1)
3456 {
3457 case NAMESPACE:
3458 {
3459 MATCH ();
3460
3461 if (LOOKING_AT (IDENT))
3462 {
3463 char *namespace_name = xstrdup (yytext);
3464 MATCH ();
3465
3466 if (LOOKING_AT ('='))
3467 {
3468 struct link *qna = match_qualified_namespace_alias ();
3469 if (qna)
3470 register_namespace_alias (namespace_name, qna);
3471
3472 if (skip_to (';') == ';')
3473 MATCH ();
3474 }
3475 else if (LOOKING_AT ('{'))
3476 {
3477 MATCH ();
3478 enter_namespace (namespace_name);
3479 globals (0);
3480 leave_namespace ();
3481 MATCH_IF ('}');
3482 }
3483
3484 xfree (namespace_name);
3485 }
3486 }
3487 break;
3488
3489 case EXTERN:
3490 MATCH ();
3491 if (LOOKING_AT (CSTRING) && *string_start == 'C'
3492 && *(string_start + 1) == '"')
3493 {
3494 /* This is `extern "C"'. */
3495 MATCH ();
3496
3497 if (LOOKING_AT ('{'))
3498 {
3499 MATCH ();
3500 globals (F_EXTERNC);
3501 MATCH_IF ('}');
3502 }
3503 else
3504 SET_FLAG (flags, F_EXTERNC);
3505 }
3506 break;
3507
3508 case TEMPLATE:
3509 MATCH ();
3510 SKIP_MATCHING_IF ('<');
3511 SET_FLAG (flags, F_TEMPLATE);
3512 break;
3513
3514 case CLASS: case STRUCT: case UNION:
3515 class_tk = LA1;
3516 MATCH ();
3517 anonymous = 1;
3518
3519 /* More than one ident here to allow for MS-DOS and OS/2
3520 specialties like `far', `_Export' etc. Some C++ libs
3521 have constructs like `_OS_DLLIMPORT(_OS_CLIENT)' in front
3522 of the class name. */
3523 while (!LOOKING_AT4 (YYEOF, ';', ':', '{'))
3524 {
3525 if (LOOKING_AT (IDENT))
3526 anonymous = 0;
3527 MATCH ();
3528 }
3529
3530 /* Don't add anonymous unions. */
3531 if (LOOKING_AT2 (':', '{') && !anonymous)
3532 class_definition (NULL, class_tk, flags, 0);
3533 else
3534 {
3535 if (skip_to (';') == ';')
3536 MATCH ();
3537 }
3538
3539 flags = start_flags;
3540 break;
3541
3542 case YYEOF:
3543 return 1;
3544
3545 case '}':
3546 return 0;
3547
3548 default:
3549 declaration (flags);
3550 flags = start_flags;
3551 break;
3552 }
3553
3554 if (prev_in == in)
3555 yyerror ("parse error", NULL);
3556 }
3557 }
3558
3559
3560 /* Parse the current input file. */
3561
3562 void
3563 yyparse ()
3564 {
3565 while (globals (0) == 0)
3566 MATCH_IF ('}');
3567 }
3568
3569
3570 \f
3571 /***********************************************************************
3572 Main Program
3573 ***********************************************************************/
3574
3575 /* Add the list of paths PATH_LIST to the current search path for
3576 input files. */
3577
3578 void
3579 add_search_path (path_list)
3580 char *path_list;
3581 {
3582 while (*path_list)
3583 {
3584 char *start = path_list;
3585 struct search_path *p;
3586
3587 while (*path_list && *path_list != PATH_LIST_SEPARATOR)
3588 ++path_list;
3589
3590 p = (struct search_path *) xmalloc (sizeof *p);
3591 p->path = (char *) xmalloc (path_list - start + 1);
3592 memcpy (p->path, start, path_list - start);
3593 p->path[path_list - start] = '\0';
3594 p->next = NULL;
3595
3596 if (search_path_tail)
3597 {
3598 search_path_tail->next = p;
3599 search_path_tail = p;
3600 }
3601 else
3602 search_path = search_path_tail = p;
3603
3604 while (*path_list == PATH_LIST_SEPARATOR)
3605 ++path_list;
3606 }
3607 }
3608
3609
3610 /* Open FILE and return a file handle for it, or -1 if FILE cannot be
3611 opened. Try to find FILE in search_path first, then try the
3612 unchanged file name. */
3613
3614 FILE *
3615 open_file (file)
3616 char *file;
3617 {
3618 FILE *fp = NULL;
3619 static char *buffer;
3620 static int buffer_size;
3621 struct search_path *path;
3622 int flen = strlen (file) + 1; /* +1 for the slash */
3623
3624 filename = xstrdup (file);
3625
3626 for (path = search_path; path && fp == NULL; path = path->next)
3627 {
3628 int len = strlen (path->path) + flen;
3629
3630 if (len + 1 >= buffer_size)
3631 {
3632 buffer_size = max (len + 1, 2 * buffer_size);
3633 buffer = (char *) xrealloc (buffer, buffer_size);
3634 }
3635
3636 strcpy (buffer, path->path);
3637 strcat (buffer, "/");
3638 strcat (buffer, file);
3639 fp = fopen (buffer, "r");
3640 }
3641
3642 /* Try the original file name. */
3643 if (fp == NULL)
3644 fp = fopen (file, "r");
3645
3646 if (fp == NULL)
3647 yyerror ("cannot open", NULL);
3648
3649 return fp;
3650 }
3651
3652
3653 /* Display usage information and exit program. */
3654
3655 #define USAGE "\
3656 Usage: ebrowse [options] {files}\n\
3657 \n\
3658 -a, --append append output to existing file\n\
3659 -f, --files=FILES read input file names from FILE\n\
3660 -I, --search-path=LIST set search path for input files\n\
3661 -m, --min-regexp-length=N set minimum regexp length to N\n\
3662 -M, --max-regexp-length=N set maximum regexp length to N\n\
3663 -n, --no-nested-classes exclude nested classes\n\
3664 -o, --output-file=FILE set output file name to FILE\n\
3665 -p, --position-info print info about position in file\n\
3666 -s, --no-structs-or-unions don't record structs or unions\n\
3667 -v, --verbose be verbose\n\
3668 -V, --very-verbose be very verbose\n\
3669 -x, --no-regexps don't record regular expressions\n\
3670 --help display this help\n\
3671 --version display version info\n\
3672 "
3673
3674 void
3675 usage (error)
3676 int error;
3677 {
3678 puts (USAGE);
3679 exit (error ? EXIT_FAILURE : EXIT_SUCCESS);
3680 }
3681
3682
3683 /* Display version and copyright info. The VERSION macro is set
3684 from the Makefile and contains the Emacs version. */
3685
3686 #ifndef VERSION
3687 # define VERSION "21"
3688 #endif
3689
3690 void
3691 version ()
3692 {
3693 printf ("ebrowse %s\n", VERSION);
3694 puts ("Copyright (C) 1992-2007 Free Software Foundation, Inc.");
3695 puts ("This program is distributed under the same terms as Emacs.");
3696 exit (EXIT_SUCCESS);
3697 }
3698
3699
3700 /* Parse one input file FILE, adding classes and members to the symbol
3701 table. */
3702
3703 void
3704 process_file (file)
3705 char *file;
3706 {
3707 FILE *fp;
3708
3709 fp = open_file (file);
3710 if (fp)
3711 {
3712 int nread, nbytes;
3713
3714 /* Give a progress indication if needed. */
3715 if (f_very_verbose)
3716 {
3717 puts (filename);
3718 fflush (stdout);
3719 }
3720 else if (f_verbose)
3721 {
3722 putchar ('.');
3723 fflush (stdout);
3724 }
3725
3726 /* Read file to inbuffer. */
3727 for (nread = 0;;)
3728 {
3729 if (nread + READ_CHUNK_SIZE >= inbuffer_size)
3730 {
3731 inbuffer_size = nread + READ_CHUNK_SIZE + 1;
3732 inbuffer = (char *) xrealloc (inbuffer, inbuffer_size);
3733 }
3734
3735 nbytes = fread (inbuffer + nread, 1, READ_CHUNK_SIZE, fp);
3736 if (nbytes <= 0)
3737 break;
3738 nread += nbytes;
3739 }
3740 if (nread < 0)
3741 nread = 0;
3742 inbuffer[nread] = '\0';
3743
3744 /* Reinitialize scanner and parser for the new input file. */
3745 re_init_scanner ();
3746 re_init_parser ();
3747
3748 /* Parse it and close the file. */
3749 yyparse ();
3750 fclose (fp);
3751 }
3752 }
3753
3754
3755 /* Read a line from stream FP and return a pointer to a static buffer
3756 containing its contents without the terminating newline. Value
3757 is null when EOF is reached. */
3758
3759 char *
3760 read_line (fp)
3761 FILE *fp;
3762 {
3763 static char *buffer;
3764 static int buffer_size;
3765 int i = 0, c;
3766
3767 while ((c = getc (fp)) != EOF && c != '\n')
3768 {
3769 if (i >= buffer_size)
3770 {
3771 buffer_size = max (100, buffer_size * 2);
3772 buffer = (char *) xrealloc (buffer, buffer_size);
3773 }
3774
3775 buffer[i++] = c;
3776 }
3777
3778 if (c == EOF && i == 0)
3779 return NULL;
3780
3781 if (i == buffer_size)
3782 {
3783 buffer_size = max (100, buffer_size * 2);
3784 buffer = (char *) xrealloc (buffer, buffer_size);
3785 }
3786
3787 buffer[i] = '\0';
3788 if (i > 0 && buffer[i - 1] == '\r')
3789 buffer[i - 1] = '\0';
3790 return buffer;
3791 }
3792
3793
3794 /* Main entry point. */
3795
3796 int
3797 main (argc, argv)
3798 int argc;
3799 char **argv;
3800 {
3801 int i;
3802 int any_inputfiles = 0;
3803 static char *out_filename = DEFAULT_OUTFILE;
3804 static char **input_filenames = NULL;
3805 static int input_filenames_size = 0;
3806 static int n_input_files;
3807
3808 filename = "command line";
3809 yyout = stdout;
3810
3811 while ((i = getopt_long (argc, argv, "af:I:m:M:no:p:svVx",
3812 options, NULL)) != EOF)
3813 {
3814 switch (i)
3815 {
3816 /* Experimental. */
3817 case 'p':
3818 info_position = atoi (optarg);
3819 break;
3820
3821 case 'n':
3822 f_nested_classes = 0;
3823 break;
3824
3825 case 'x':
3826 f_regexps = 0;
3827 break;
3828
3829 /* Add the name of a file containing more input files. */
3830 case 'f':
3831 if (n_input_files == input_filenames_size)
3832 {
3833 input_filenames_size = max (10, 2 * input_filenames_size);
3834 input_filenames = (char **) xrealloc ((void *)input_filenames,
3835 input_filenames_size);
3836 }
3837 input_filenames[n_input_files++] = xstrdup (optarg);
3838 break;
3839
3840 /* Append new output to output file instead of truncating it. */
3841 case 'a':
3842 f_append = 1;
3843 break;
3844
3845 /* Include structs in the output */
3846 case 's':
3847 f_structs = 0;
3848 break;
3849
3850 /* Be verbose (give a progress indication). */
3851 case 'v':
3852 f_verbose = 1;
3853 break;
3854
3855 /* Be very verbose (print file names as they are processed). */
3856 case 'V':
3857 f_verbose = 1;
3858 f_very_verbose = 1;
3859 break;
3860
3861 /* Change the name of the output file. */
3862 case 'o':
3863 out_filename = optarg;
3864 break;
3865
3866 /* Set minimum length for regular expression strings
3867 when recorded in the output file. */
3868 case 'm':
3869 min_regexp = atoi (optarg);
3870 break;
3871
3872 /* Set maximum length for regular expression strings
3873 when recorded in the output file. */
3874 case 'M':
3875 max_regexp = atoi (optarg);
3876 break;
3877
3878 /* Add to search path. */
3879 case 'I':
3880 add_search_path (optarg);
3881 break;
3882
3883 /* Display help */
3884 case -2:
3885 usage (0);
3886 break;
3887
3888 case -3:
3889 version ();
3890 break;
3891 }
3892 }
3893
3894 /* Call init_scanner after command line flags have been processed to be
3895 able to add keywords depending on command line (not yet
3896 implemented). */
3897 init_scanner ();
3898 init_sym ();
3899
3900 /* Open output file */
3901 if (*out_filename)
3902 {
3903 if (f_append)
3904 {
3905 /* Check that the file to append to exists, and is not
3906 empty. More specifically, it should be a valid file
3907 produced by a previous run of ebrowse, but that's too
3908 difficult to check. */
3909 FILE *fp;
3910 int rc;
3911
3912 fp = fopen (out_filename, "r");
3913 if (fp == NULL)
3914 {
3915 yyerror ("file `%s' must exist for --append", out_filename);
3916 exit (EXIT_FAILURE);
3917 }
3918
3919 rc = fseek (fp, 0, SEEK_END);
3920 if (rc == -1)
3921 {
3922 yyerror ("error seeking in file `%s'", out_filename);
3923 exit (EXIT_FAILURE);
3924 }
3925
3926 rc = ftell (fp);
3927 if (rc == -1)
3928 {
3929 yyerror ("error getting size of file `%s'", out_filename);
3930 exit (EXIT_FAILURE);
3931 }
3932
3933 else if (rc == 0)
3934 {
3935 yyerror ("file `%s' is empty", out_filename);
3936 /* It may be ok to use an empty file for appending.
3937 exit (EXIT_FAILURE); */
3938 }
3939
3940 fclose (fp);
3941 }
3942
3943 yyout = fopen (out_filename, f_append ? "a" : "w");
3944 if (yyout == NULL)
3945 {
3946 yyerror ("cannot open output file `%s'", out_filename);
3947 exit (EXIT_FAILURE);
3948 }
3949 }
3950
3951 /* Process input files specified on the command line. */
3952 while (optind < argc)
3953 {
3954 process_file (argv[optind++]);
3955 any_inputfiles = 1;
3956 }
3957
3958 /* Process files given on stdin if no files specified. */
3959 if (!any_inputfiles && n_input_files == 0)
3960 {
3961 char *file;
3962 while ((file = read_line (stdin)) != NULL)
3963 process_file (file);
3964 }
3965 else
3966 {
3967 /* Process files from `--files=FILE'. Every line in FILE names
3968 one input file to process. */
3969 for (i = 0; i < n_input_files; ++i)
3970 {
3971 FILE *fp = fopen (input_filenames[i], "r");
3972
3973 if (fp == NULL)
3974 yyerror ("cannot open input file `%s'", input_filenames[i]);
3975 else
3976 {
3977 char *file;
3978 while ((file = read_line (fp)) != NULL)
3979 process_file (file);
3980 fclose (fp);
3981 }
3982 }
3983 }
3984
3985 /* Write output file. */
3986 dump_roots (yyout);
3987
3988 /* Close output file. */
3989 if (yyout != stdout)
3990 fclose (yyout);
3991
3992 return EXIT_SUCCESS;
3993 }
3994
3995 /* arch-tag: fc03b4bc-91a9-4c3d-b3b9-12a77fa86dd8
3996 (do not change this comment) */
3997
3998 /* ebrowse.c ends here */
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