gcc/cp/xref.c

   1 /* Code for handling XREF output from GNU C++.
   2    Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
   3    Contributed by Michael Tiemann (tiemann@cygnus.com)
   4
   5 This file is part of GNU CC.
   6
   7 GNU CC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GNU CC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GNU CC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22
  23 #include "config.h"
  24 #include "tree.h"
  25 #include <stdio.h>
  26 #include "cp-tree.h"
  27 #include "input.h"
  28
  29 #include <ctype.h>
  30
  31 #ifdef HAVE_STDLIB_H
  32 #include <stdlib.h>
  33 #endif
  34
  35 #ifdef HAVE_UNISTD_H
  36 #include <unistd.h>
  37 #endif
  38
  39 extern char *getpwd PROTO((void));
  40
  41 #ifdef HAVE_STRING_H
  42 #include <string.h>
  43 #else
  44 extern char *index ();
  45 extern char *rindex ();
  46 #endif
  47
  48 /* The character(s) used to join a directory specification (obtained with
  49    getwd or equivalent) with a non-absolute file name.  */
  50
  51 #ifndef FILE_NAME_JOINER
  52 #define FILE_NAME_JOINER "/"
  53 #endif
  54
  55 /* Nonzero if NAME as a file name is absolute.  */
  56 #ifndef FILE_NAME_ABSOLUTE_P
  57 #define FILE_NAME_ABSOLUTE_P(NAME) (NAME[0] == '/')
  58 #endif
  59
  60 /* For cross referencing.  */
  61
  62 int flag_gnu_xref;
  63
  64 /************************************************************************/
  65 /*                                                                      */
  66 /*      Common definitions                                              */
  67 /*                                                                      */
  68 /************************************************************************/
  69
  70 #ifndef TRUE
  71 #define TRUE 1
  72 #endif
  73 #ifndef FALSE
  74 #define FALSE 0
  75 #endif
  76
  77 #define PALLOC(typ) ((typ *) calloc(1,sizeof(typ)))
  78
  79
  80 /* Return a malloc'd copy of STR.  */
  81 #define SALLOC(str) \
  82  ((char *) ((str) == NULL ? NULL        \
  83             : (char *) strcpy ((char *) malloc (strlen ((str)) + 1), (str))))
  84 #define SFREE(str) (str != NULL && (free(str),0))
  85
  86 #define STREQL(s1,s2) (strcmp((s1),(s2)) == 0)
  87 #define STRNEQ(s1,s2) (strcmp((s1),(s2)) != 0)
  88 #define STRLSS(s1,s2) (strcmp((s1),(s2)) < 0)
  89 #define STRLEQ(s1,s2) (strcmp((s1),(s2)) <= 0)
  90 #define STRGTR(s1,s2) (strcmp((s1),(s2)) > 0)
  91 #define STRGEQ(s1,s2) (strcmp((s1),(s2)) >= 0)
  92
  93 /************************************************************************/
  94 /*                                                                      */
  95 /*      Type definitions                                                */
  96 /*                                                                      */
  97 /************************************************************************/
  98
  99
 100 typedef struct _XREF_FILE *     XREF_FILE;
 101 typedef struct _XREF_SCOPE *    XREF_SCOPE;
 102
 103 typedef struct _XREF_FILE
 104 {
 105   char *name;
 106   char *outname;
 107   XREF_FILE next;
 108 } XREF_FILE_INFO;
 109
 110 typedef struct _XREF_SCOPE
 111 {
 112   int gid;
 113   int lid;
 114   XREF_FILE file;
 115   int start;
 116   XREF_SCOPE outer;
 117 } XREF_SCOPE_INFO;
 118
 119 /************************************************************************/
 120 /*                                                                      */
 121 /*      Local storage                                                   */
 122 /*                                                                      */
 123 /************************************************************************/
 124
 125 static  char            doing_xref = 0;
 126 static  FILE *          xref_file = NULL;
 127 static  char            xref_name[1024];
 128 static  XREF_FILE       all_files = NULL;
 129 static  char *          wd_name = NULL;
 130 static  XREF_SCOPE      cur_scope = NULL;
 131 static  int     scope_ctr = 0;
 132 static  XREF_FILE       last_file = NULL;
 133 static  tree            last_fndecl = NULL;
 134
 135 /************************************************************************/
 136 /*                                                                      */
 137 /*      Forward definitions                                             */
 138 /*                                                                      */
 139 /************************************************************************/
 140 static  void            gen_assign PROTO((XREF_FILE, tree));
 141 static  XREF_FILE       find_file PROTO((char *));
 142 static  char *          filename PROTO((XREF_FILE));
 143 static  char *          fctname PROTO((tree));
 144 static  char *          declname PROTO((tree));
 145 static  void            simplify_type PROTO((char *));
 146 static  char *          fixname PROTO((char *, char *));
 147 static  void            open_xref_file PROTO((char *));
 148
 149 /* Start cross referencing.  FILE is the name of the file we xref.  */
 150
 151 void
 152 GNU_xref_begin (file)
 153    char *file;
 154 {
 155   doing_xref = 1;
 156
 157   if (file != NULL && STRNEQ (file,"-"))
 158     {
 159       open_xref_file(file);
 160       GNU_xref_file(file);
 161     }
 162 }
 163
 164 /* Finish cross-referencing.  ERRCNT is the number of errors
 165    we encountered.  */
 166
 167 void
 168 GNU_xref_end (ect)
 169    int ect;
 170 {
 171   XREF_FILE xf;
 172
 173   if (!doing_xref) return;
 174
 175   xf = find_file (input_filename);
 176   if (xf == NULL) return;
 177
 178   while (cur_scope != NULL)
 179     GNU_xref_end_scope(cur_scope->gid,0,0,0);
 180
 181   doing_xref = 0;
 182
 183   if (xref_file == NULL) return;
 184
 185   fclose (xref_file);
 186
 187   xref_file = NULL;
 188   all_files = NULL;
 189
 190   if (ect > 0) unlink (xref_name);
 191 }
 192
 193 /* Write out xref for file named NAME.  */
 194
 195 void
 196 GNU_xref_file (name)
 197    char *name;
 198 {
 199   XREF_FILE xf;
 200
 201   if (!doing_xref || name == NULL) return;
 202
 203   if (xref_file == NULL)
 204     {
 205       open_xref_file (name);
 206       if (!doing_xref) return;
 207     }
 208
 209   if (all_files == NULL)
 210     fprintf(xref_file,"SCP * 0 0 0 0 RESET\n");
 211
 212   xf = find_file (name);
 213   if (xf != NULL) return;
 214
 215   xf = PALLOC (XREF_FILE_INFO);
 216   xf->name = SALLOC (name);
 217   xf->next = all_files;
 218   all_files = xf;
 219
 220   if (wd_name == NULL)
 221     wd_name = getpwd ();
 222
 223   if (FILE_NAME_ABSOLUTE_P (name) || ! wd_name)
 224     xf->outname = xf->name;
 225   else
 226     {
 227       char *nmbuf
 228         = (char *) malloc (strlen (wd_name) + strlen (FILE_NAME_JOINER)
 229                            + strlen (name) + 1);
 230       sprintf (nmbuf, "%s%s%s", wd_name, FILE_NAME_JOINER, name);
 231       name = nmbuf;
 232       xf->outname = nmbuf;
 233     }
 234
 235   fprintf (xref_file, "FIL %s %s 0\n", name, wd_name);
 236
 237   filename (xf);
 238   fctname (NULL);
 239 }
 240
 241 /* Start a scope identified at level ID.  */
 242
 243 void
 244 GNU_xref_start_scope (id)
 245    HOST_WIDE_INT id;
 246 {
 247   XREF_SCOPE xs;
 248   XREF_FILE xf;
 249
 250   if (!doing_xref) return;
 251   xf = find_file (input_filename);
 252
 253   xs = PALLOC (XREF_SCOPE_INFO);
 254   xs->file = xf;
 255   xs->start = lineno;
 256   if (xs->start <= 0) xs->start = 1;
 257   xs->gid = id;
 258   xs->lid = ++scope_ctr;
 259   xs->outer = cur_scope;
 260   cur_scope = xs;
 261 }
 262
 263 /* Finish a scope at level ID.
 264    INID is ???
 265    PRM is ???
 266    KEEP is nonzero iff this scope is retained (nonzero if it's
 267    a compiler-generated invisible scope).
 268    TRNS is ???  */
 269
 270 void
 271 GNU_xref_end_scope (id,inid,prm,keep)
 272    HOST_WIDE_INT id;
 273    HOST_WIDE_INT inid;
 274    int prm,keep;
 275 {
 276   XREF_FILE xf;
 277   XREF_SCOPE xs,lxs,oxs;
 278   char *stype;
 279
 280   if (!doing_xref) return;
 281   xf = find_file (input_filename);
 282   if (xf == NULL) return;
 283
 284   lxs = NULL;
 285   for (xs = cur_scope; xs != NULL; xs = xs->outer)
 286     {
 287       if (xs->gid == id) break;
 288       lxs = xs;
 289     }
 290   if (xs == NULL) return;
 291
 292   if (inid != 0) {
 293     for (oxs = cur_scope; oxs != NULL; oxs = oxs->outer) {
 294       if (oxs->gid == inid) break;
 295     }
 296     if (oxs == NULL) return;
 297     inid = oxs->lid;
 298   }
 299
 300   if (prm == 2) stype = "SUE";
 301   else if (prm != 0) stype = "ARGS";
 302   else if (keep == 2 || inid != 0) stype = "INTERN";
 303   else stype = "EXTERN";
 304
 305   fprintf (xref_file,"SCP %s %d %d %d %d %s\n",
 306            filename (xf), xs->start, lineno,xs->lid, inid, stype);
 307
 308   if (lxs == NULL) cur_scope = xs->outer;
 309   else lxs->outer = xs->outer;
 310
 311   free (xs);
 312 }
 313
 314 /* Output a reference to NAME in FNDECL.  */
 315
 316 void
 317 GNU_xref_ref (fndecl,name)
 318    tree fndecl;
 319    char *name;
 320 {
 321   XREF_FILE xf;
 322
 323   if (!doing_xref) return;
 324   xf = find_file (input_filename);
 325   if (xf == NULL) return;
 326
 327   fprintf (xref_file, "REF %s %d %s %s\n",
 328            filename (xf), lineno, fctname (fndecl), name);
 329 }
 330
 331 /* Output a reference to DECL in FNDECL.  */
 332
 333 void
 334 GNU_xref_decl (fndecl,decl)
 335    tree fndecl;
 336    tree decl;
 337 {
 338   XREF_FILE xf,xf1;
 339   char *cls;
 340   char *name;
 341   char buf[10240];
 342   int uselin;
 343
 344   if (!doing_xref) return;
 345   xf = find_file (input_filename);
 346   if (xf == NULL) return;
 347
 348   uselin = FALSE;
 349
 350   if (TREE_CODE (decl) == TYPE_DECL) cls = "TYPEDEF";
 351   else if (TREE_CODE (decl) == FIELD_DECL) cls = "FIELD";
 352   else if (TREE_CODE (decl) == VAR_DECL)
 353     {
 354       if (fndecl == NULL && TREE_STATIC(decl)
 355           && TREE_READONLY(decl) && DECL_INITIAL(decl) != 0
 356           && !TREE_PUBLIC(decl) && !DECL_EXTERNAL(decl)
 357           && DECL_MODE(decl) != BLKmode) cls = "CONST";
 358       else if (DECL_EXTERNAL(decl)) cls = "EXTERN";
 359       else if (TREE_PUBLIC(decl)) cls = "EXTDEF";
 360       else if (TREE_STATIC(decl)) cls = "STATIC";
 361       else if (DECL_REGISTER(decl)) cls = "REGISTER";
 362       else cls = "AUTO";
 363     }
 364   else if (TREE_CODE (decl) == PARM_DECL) cls = "PARAM";
 365   else if (TREE_CODE (decl) == FIELD_DECL) cls = "FIELD";
 366   else if (TREE_CODE (decl) == CONST_DECL) cls = "CONST";
 367   else if (TREE_CODE (decl) == FUNCTION_DECL)
 368     {
 369       if (DECL_EXTERNAL (decl)) cls = "EXTERN";
 370       else if (TREE_PUBLIC (decl)) cls = "EFUNCTION";
 371       else cls = "SFUNCTION";
 372     }
 373   else if (TREE_CODE (decl) == LABEL_DECL) cls = "LABEL";
 374   else if (TREE_CODE (decl) == UNION_TYPE)
 375     {
 376       cls = "UNIONID";
 377       decl = TYPE_NAME (decl);
 378       uselin = TRUE;
 379     }
 380   else if (TREE_CODE (decl) == RECORD_TYPE)
 381     {
 382       if (CLASSTYPE_DECLARED_CLASS (decl)) cls = "CLASSID";
 383       else if (IS_SIGNATURE (decl)) cls = "SIGNATUREID";
 384       else cls = "STRUCTID";
 385       decl = TYPE_NAME (decl);
 386       uselin = TRUE;
 387     }
 388   else if (TREE_CODE (decl) == ENUMERAL_TYPE)
 389     {
 390       cls = "ENUMID";
 391       decl = TYPE_NAME (decl);
 392       uselin = TRUE;
 393     }
 394   else if (TREE_CODE (decl) == TEMPLATE_DECL)
 395     {
 396       if (TREE_CODE (DECL_RESULT (decl)) == TYPE_DECL)
 397         cls = "CLASSTEMP";
 398       else if (TREE_CODE (DECL_RESULT (decl)) == FUNCTION_DECL)
 399         cls = "FUNCTEMP";
 400       else if (TREE_CODE (DECL_RESULT (decl)) == VAR_DECL)
 401         cls = "VARTEMP";
 402       else
 403         my_friendly_abort (358);
 404       uselin = TRUE;
 405     }
 406   else cls = "UNKNOWN";
 407
 408   if (decl == NULL || DECL_NAME (decl) == NULL) return;
 409
 410   if (uselin && decl->decl.linenum > 0 && decl->decl.filename != NULL)
 411     {
 412       xf1 = find_file (decl->decl.filename);
 413       if (xf1 != NULL)
 414         {
 415           lineno = decl->decl.linenum;
 416           xf = xf1;
 417         }
 418     }
 419
 420   if (DECL_ASSEMBLER_NAME (decl))
 421     name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
 422   else
 423     name = IDENTIFIER_POINTER (DECL_NAME (decl));
 424
 425   strcpy (buf, type_as_string (TREE_TYPE (decl), 0));
 426   simplify_type (buf);
 427
 428   fprintf (xref_file, "DCL %s %d %s %d %s %s %s\n",
 429            filename(xf), lineno, name,
 430            (cur_scope != NULL ? cur_scope->lid : 0),
 431            cls, fctname(fndecl), buf);
 432
 433   if (STREQL (cls, "STRUCTID") || STREQL (cls, "UNIONID")
 434       || STREQL (cls, "SIGNATUREID"))
 435     {
 436       cls = "CLASSID";
 437       fprintf (xref_file, "DCL %s %d %s %d %s %s %s\n",
 438                filename(xf), lineno,name,
 439                (cur_scope != NULL ? cur_scope->lid : 0),
 440                cls, fctname(fndecl), buf);
 441     }
 442 }
 443
 444 /* Output a reference to a call to NAME in FNDECL.  */
 445
 446 void
 447 GNU_xref_call (fndecl, name)
 448    tree fndecl;
 449    char *name;
 450 {
 451   XREF_FILE xf;
 452   char buf[1024];
 453   char *s;
 454
 455   if (!doing_xref) return;
 456   xf = find_file (input_filename);
 457   if (xf == NULL) return;
 458   name = fixname (name, buf);
 459
 460   for (s = name; *s != 0; ++s)
 461     if (*s == '_' && s[1] == '_') break;
 462   if (*s != 0) GNU_xref_ref (fndecl, name);
 463
 464   fprintf (xref_file, "CAL %s %d %s %s\n",
 465            filename (xf), lineno, name, fctname (fndecl));
 466 }
 467
 468 /* Output cross-reference info about FNDECL.  If non-NULL,
 469    ARGS are the arguments for the function (i.e., before the FUNCTION_DECL
 470    has been fully built).  */
 471
 472 void
 473 GNU_xref_function (fndecl, args)
 474    tree fndecl;
 475    tree args;
 476 {
 477   XREF_FILE xf;
 478   int ct;
 479   char buf[1024];
 480
 481   if (!doing_xref) return;
 482   xf = find_file (input_filename);
 483   if (xf == NULL) return;
 484
 485   ct = 0;
 486   buf[0] = 0;
 487   if (args == NULL) args = DECL_ARGUMENTS (fndecl);
 488
 489   GNU_xref_decl (NULL, fndecl);
 490
 491   for ( ; args != NULL; args = TREE_CHAIN (args))
 492     {
 493       GNU_xref_decl (fndecl,args);
 494       if (ct != 0) strcat (buf,",");
 495       strcat (buf, declname (args));
 496       ++ct;
 497     }
 498
 499   fprintf (xref_file, "PRC %s %d %s %d %d %s\n",
 500            filename(xf), lineno, declname(fndecl),
 501            (cur_scope != NULL ? cur_scope->lid : 0),
 502            ct, buf);
 503 }
 504
 505 /* Output cross-reference info about an assignment to NAME.  */
 506
 507 void
 508 GNU_xref_assign(name)
 509    tree name;
 510 {
 511   XREF_FILE xf;
 512
 513   if (!doing_xref) return;
 514   xf = find_file(input_filename);
 515   if (xf == NULL) return;
 516
 517   gen_assign(xf, name);
 518 }
 519
 520 static void
 521 gen_assign(xf, name)
 522    XREF_FILE xf;
 523    tree name;
 524 {
 525   char *s;
 526
 527   s = NULL;
 528
 529   switch (TREE_CODE (name))
 530     {
 531     case IDENTIFIER_NODE :
 532       s = IDENTIFIER_POINTER(name);
 533       break;
 534     case VAR_DECL :
 535       s = declname(name);
 536       break;
 537     case COMPONENT_REF :
 538       gen_assign(xf, TREE_OPERAND(name, 0));
 539       gen_assign(xf, TREE_OPERAND(name, 1));
 540       break;
 541     case INDIRECT_REF :
 542     case OFFSET_REF :
 543     case ARRAY_REF :
 544     case BUFFER_REF :
 545       gen_assign(xf, TREE_OPERAND(name, 0));
 546       break;
 547     case COMPOUND_EXPR :
 548       gen_assign(xf, TREE_OPERAND(name, 1));
 549       break;
 550       default :
 551       break;
 552     }
 553
 554   if (s != NULL)
 555     fprintf(xref_file, "ASG %s %d %s\n", filename(xf), lineno, s);
 556 }
 557
 558 /* Output cross-reference info about a class hierarchy.
 559    CLS is the class type of interest.  BASE is a baseclass
 560    for CLS.  PUB and VIRT give the access info about
 561    the class derivation.  FRND is nonzero iff BASE is a friend
 562    of CLS.
 563
 564    ??? Needs to handle nested classes.  */
 565
 566 void
 567 GNU_xref_hier(cls, base, pub, virt, frnd)
 568    char *cls;
 569    char *base;
 570    int pub;
 571    int virt;
 572    int frnd;
 573 {
 574   XREF_FILE xf;
 575
 576   if (!doing_xref) return;
 577   xf = find_file(input_filename);
 578   if (xf == NULL) return;
 579
 580   fprintf(xref_file, "HIE %s %d %s %s %d %d %d\n",
 581           filename(xf), lineno, cls, base, pub, virt, frnd);
 582 }
 583
 584 /* Output cross-reference info about class members.  CLS
 585    is the containing type; FLD is the class member.  */
 586
 587 void
 588 GNU_xref_member(cls, fld)
 589    tree cls;
 590    tree fld;
 591 {
 592   XREF_FILE xf;
 593   char *prot;
 594   int confg, pure;
 595   char *d;
 596 #ifdef XREF_SHORT_MEMBER_NAMES
 597   int i;
 598 #endif
 599   char buf[1024], bufa[1024];
 600
 601   if (!doing_xref) return;
 602   xf = find_file(fld->decl.filename);
 603   if (xf == NULL) return;
 604
 605   if (TREE_PRIVATE (fld)) prot = "PRIVATE";
 606   else if (TREE_PROTECTED(fld)) prot = "PROTECTED";
 607   else prot = "PUBLIC";
 608
 609   confg = 0;
 610   if (TREE_CODE (fld) == FUNCTION_DECL && DECL_CONST_MEMFUNC_P(fld))
 611     confg = 1;
 612   else if (TREE_CODE (fld) == CONST_DECL)
 613     confg = 1;
 614
 615   pure = 0;
 616   if (TREE_CODE (fld) == FUNCTION_DECL && DECL_ABSTRACT_VIRTUAL_P(fld))
 617     pure = 1;
 618
 619   d = IDENTIFIER_POINTER(cls);
 620   sprintf(buf, "%d%s", strlen(d), d);
 621 #ifdef XREF_SHORT_MEMBER_NAMES
 622   i = strlen(buf);
 623 #endif
 624   strcpy(bufa, declname(fld));
 625
 626 #ifdef XREF_SHORT_MEMBER_NAMES
 627   for (p = &bufa[1]; *p != 0; ++p)
 628     {
 629       if (p[0] == '_' && p[1] == '_' && p[2] >= '0' && p[2] <= '9') {
 630         if (strncmp(&p[2], buf, i) == 0) *p = 0;
 631         break;
 632       }
 633       else if (p[0] == '_' && p[1] == '_' && p[2] == 'C' && p[3] >= '0' && p[3] <= '9') {
 634         if (strncmp(&p[3], buf, i) == 0) *p = 0;
 635         break;
 636       }
 637     }
 638 #endif
 639
 640   fprintf(xref_file, "MEM %s %d %s %s %s %d %d %d %d %d %d %d\n",
 641           filename(xf), fld->decl.linenum, d,  bufa,  prot,
 642           (TREE_CODE (fld) == FUNCTION_DECL ? 0 : 1),
 643           (DECL_INLINE (fld) ? 1 : 0),
 644           (DECL_LANG_SPECIFIC(fld) && DECL_FRIEND_P(fld) ? 1 : 0),
 645           (DECL_VINDEX(fld) ? 1 : 0),
 646           (TREE_STATIC(fld) ? 1 : 0),
 647           pure, confg);
 648 }
 649
 650 /* Find file entry given name.  */
 651
 652 static XREF_FILE
 653 find_file(name)
 654    char *name;
 655 {
 656   XREF_FILE xf;
 657
 658   for (xf = all_files; xf != NULL; xf = xf->next) {
 659     if (STREQL(name, xf->name)) break;
 660   }
 661
 662   return xf;
 663 }
 664
 665 /* Return filename for output purposes.  */
 666
 667 static char *
 668 filename(xf)
 669    XREF_FILE xf;
 670 {
 671   if (xf == NULL) {
 672     last_file = NULL;
 673     return "*";
 674   }
 675
 676   if (last_file == xf) return "*";
 677
 678   last_file = xf;
 679
 680   return xf->outname;
 681 }
 682
 683 /* Return function name for output purposes.  */
 684
 685 static char *
 686 fctname(fndecl)
 687    tree fndecl;
 688 {
 689   static char fctbuf[1024];
 690   char *s;
 691
 692   if (fndecl == NULL && last_fndecl == NULL) return "*";
 693
 694   if (fndecl == NULL)
 695     {
 696       last_fndecl = NULL;
 697       return "*TOP*";
 698     }
 699
 700   if (fndecl == last_fndecl) return "*";
 701
 702   last_fndecl = fndecl;
 703
 704   s = declname(fndecl);
 705   s = fixname(s, fctbuf);
 706
 707   return s;
 708 }
 709
 710 /* Return decl name for output purposes.  */
 711
 712 static char *
 713 declname(dcl)
 714    tree dcl;
 715 {
 716   if (DECL_NAME (dcl) == NULL) return "?";
 717
 718   if (DECL_ASSEMBLER_NAME (dcl))
 719     return IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (dcl));
 720   else
 721     return IDENTIFIER_POINTER (DECL_NAME (dcl));
 722 }
 723
 724 /* Simplify a type string by removing unneeded parenthesis.  */
 725
 726 static void
 727 simplify_type(typ)
 728    char *typ;
 729 {
 730   char *s;
 731   int lvl, i;
 732
 733   i = strlen(typ);
 734   while (i > 0 && isspace(typ[i-1])) typ[--i] = 0;
 735
 736   if (i > 7 && STREQL(&typ[i-5], "const"))
 737     {
 738       typ[i-5] = 0;
 739       i -= 5;
 740     }
 741
 742   if (typ[i-1] != ')') return;
 743
 744   s = &typ[i-2];
 745   lvl = 1;
 746   while (*s != 0) {
 747     if (*s == ')') ++lvl;
 748     else if (*s == '(')
 749       {
 750         --lvl;
 751         if (lvl == 0)
 752           {
 753             s[1] = ')';
 754             s[2] = 0;
 755             break;
 756           }
 757       }
 758     --s;
 759   }
 760
 761   if (*s != 0 && s[-1] == ')')
 762     {
 763       --s;
 764       --s;
 765       if (*s == '(') s[2] = 0;
 766       else if (*s == ':') {
 767         while (*s != '(') --s;
 768         s[1] = ')';
 769         s[2] = 0;
 770       }
 771     }
 772 }
 773
 774 /* Fixup a function name (take care of embedded spaces).  */
 775
 776 static char *
 777 fixname(nam, buf)
 778    char *nam;
 779    char *buf;
 780 {
 781   char *s, *t;
 782   int fg;
 783
 784   s = nam;
 785   t = buf;
 786   fg = 0;
 787
 788   while (*s != 0)
 789     {
 790       if (*s == ' ')
 791         {
 792           *t++ = '\36';
 793           ++fg;
 794         }
 795       else *t++ = *s;
 796       ++s;
 797     }
 798   *t = 0;
 799
 800   if (fg == 0) return nam;
 801
 802   return buf;
 803 }
 804
 805 /* Open file for xreffing.  */
 806
 807 static void
 808 open_xref_file(file)
 809    char *file;
 810 {
 811   char *s, *t;
 812
 813 #ifdef XREF_FILE_NAME
 814   XREF_FILE_NAME (xref_name, file);
 815 #else
 816   s = rindex (file, '/');
 817   if (s == NULL)
 818     sprintf (xref_name, ".%s.gxref", file);
 819   else
 820     {
 821       ++s;
 822       strcpy (xref_name, file);
 823       t = rindex (xref_name, '/');
 824       ++t;
 825       *t++ = '.';
 826       strcpy (t, s);
 827       strcat (t, ".gxref");
 828     }
 829 #endif /* no XREF_FILE_NAME */
 830
 831   xref_file = fopen(xref_name, "w");
 832
 833   if (xref_file == NULL)
 834     {
 835       error("Can't create cross-reference file `%s'", xref_name);
 836       doing_xref = 0;
 837     }
 838 }