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