gcc/cp/xref.c

   1 /* Code for handling XREF output from GNU C++.
   2    Copyright (C) 1992, 1993, 1994, 1995, 1997 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 #endif
  44
  45 #ifdef NEED_DECLARATION_RINDEX
  46 extern char *rindex ();
  47 #endif
  48
  49 /* The character(s) used to join a directory specification (obtained with
  50    getwd or equivalent) with a non-absolute file name.  */
  51
  52 #ifndef FILE_NAME_JOINER
  53 #define FILE_NAME_JOINER "/"
  54 #endif
  55
  56 /* Nonzero if NAME as a file name is absolute.  */
  57 #ifndef FILE_NAME_ABSOLUTE_P
  58 #define FILE_NAME_ABSOLUTE_P(NAME) (NAME[0] == '/')
  59 #endif
  60
  61 /* For cross referencing.  */
  62
  63 int flag_gnu_xref;
  64
  65 /************************************************************************/
  66 /*                                                                      */
  67 /*      Common definitions                                              */
  68 /*                                                                      */
  69 /************************************************************************/
  70
  71 #ifndef TRUE
  72 #define TRUE 1
  73 #endif
  74 #ifndef FALSE
  75 #define FALSE 0
  76 #endif
  77
  78 #define PALLOC(typ) ((typ *) calloc(1,sizeof(typ)))
  79
  80
  81 /* Return a malloc'd copy of STR.  */
  82 #define SALLOC(str) \
  83  ((char *) ((str) == NULL ? NULL        \
  84             : (char *) strcpy ((char *) malloc (strlen ((str)) + 1), (str))))
  85 #define SFREE(str) (str != NULL && (free(str),0))
  86
  87 #define STREQL(s1,s2) (strcmp((s1),(s2)) == 0)
  88 #define STRNEQ(s1,s2) (strcmp((s1),(s2)) != 0)
  89 #define STRLSS(s1,s2) (strcmp((s1),(s2)) < 0)
  90 #define STRLEQ(s1,s2) (strcmp((s1),(s2)) <= 0)
  91 #define STRGTR(s1,s2) (strcmp((s1),(s2)) > 0)
  92 #define STRGEQ(s1,s2) (strcmp((s1),(s2)) >= 0)
  93
  94 /************************************************************************/
  95 /*                                                                      */
  96 /*      Type definitions                                                */
  97 /*                                                                      */
  98 /************************************************************************/
  99
 100
 101 typedef struct _XREF_FILE *     XREF_FILE;
 102 typedef struct _XREF_SCOPE *    XREF_SCOPE;
 103
 104 typedef struct _XREF_FILE
 105 {
 106   char *name;
 107   char *outname;
 108   XREF_FILE next;
 109 } XREF_FILE_INFO;
 110
 111 typedef struct _XREF_SCOPE
 112 {
 113   int gid;
 114   int lid;
 115   XREF_FILE file;
 116   int start;
 117   XREF_SCOPE outer;
 118 } XREF_SCOPE_INFO;
 119
 120 /************************************************************************/
 121 /*                                                                      */
 122 /*      Local storage                                                   */
 123 /*                                                                      */
 124 /************************************************************************/
 125
 126 static  char            doing_xref = 0;
 127 static  FILE *          xref_file = NULL;
 128 static  char            xref_name[1024];
 129 static  XREF_FILE       all_files = NULL;
 130 static  char *          wd_name = NULL;
 131 static  XREF_SCOPE      cur_scope = NULL;
 132 static  int     scope_ctr = 0;
 133 static  XREF_FILE       last_file = NULL;
 134 static  tree            last_fndecl = NULL;
 135
 136 /************************************************************************/
 137 /*                                                                      */
 138 /*      Forward definitions                                             */
 139 /*                                                                      */
 140 /************************************************************************/
 141 static  void            gen_assign PROTO((XREF_FILE, tree));
 142 static  XREF_FILE       find_file PROTO((char *));
 143 static  char *          filename PROTO((XREF_FILE));
 144 static  char *          fctname PROTO((tree));
 145 static  char *          declname PROTO((tree));
 146 static  void            simplify_type PROTO((char *));
 147 static  char *          fixname PROTO((char *, char *));
 148 static  void            open_xref_file PROTO((char *));
 149
 150 /* Start cross referencing.  FILE is the name of the file we xref.  */
 151
 152 void
 153 GNU_xref_begin (file)
 154    char *file;
 155 {
 156   doing_xref = 1;
 157
 158   if (file != NULL && STRNEQ (file,"-"))
 159     {
 160       open_xref_file(file);
 161       GNU_xref_file(file);
 162     }
 163 }
 164
 165 /* Finish cross-referencing.  ERRCNT is the number of errors
 166    we encountered.  */
 167
 168 void
 169 GNU_xref_end (ect)
 170    int ect;
 171 {
 172   XREF_FILE xf;
 173
 174   if (!doing_xref) return;
 175
 176   xf = find_file (input_filename);
 177   if (xf == NULL) return;
 178
 179   while (cur_scope != NULL)
 180     GNU_xref_end_scope(cur_scope->gid,0,0,0);
 181
 182   doing_xref = 0;
 183
 184   if (xref_file == NULL) return;
 185
 186   fclose (xref_file);
 187
 188   xref_file = NULL;
 189   all_files = NULL;
 190
 191   if (ect > 0) unlink (xref_name);
 192 }
 193
 194 /* Write out xref for file named NAME.  */
 195
 196 void
 197 GNU_xref_file (name)
 198    char *name;
 199 {
 200   XREF_FILE xf;
 201
 202   if (!doing_xref || name == NULL) return;
 203
 204   if (xref_file == NULL)
 205     {
 206       open_xref_file (name);
 207       if (!doing_xref) return;
 208     }
 209
 210   if (all_files == NULL)
 211     fprintf(xref_file,"SCP * 0 0 0 0 RESET\n");
 212
 213   xf = find_file (name);
 214   if (xf != NULL) return;
 215
 216   xf = PALLOC (XREF_FILE_INFO);
 217   xf->name = SALLOC (name);
 218   xf->next = all_files;
 219   all_files = xf;
 220
 221   if (wd_name == NULL)
 222     wd_name = getpwd ();
 223
 224   if (FILE_NAME_ABSOLUTE_P (name) || ! wd_name)
 225     xf->outname = xf->name;
 226   else
 227     {
 228       char *nmbuf
 229         = (char *) malloc (strlen (wd_name) + strlen (FILE_NAME_JOINER)
 230                            + strlen (name) + 1);
 231       sprintf (nmbuf, "%s%s%s", wd_name, FILE_NAME_JOINER, name);
 232       name = nmbuf;
 233       xf->outname = nmbuf;
 234     }
 235
 236   fprintf (xref_file, "FIL %s %s 0\n", name, wd_name);
 237
 238   filename (xf);
 239   fctname (NULL);
 240 }
 241
 242 /* Start a scope identified at level ID.  */
 243
 244 void
 245 GNU_xref_start_scope (id)
 246    HOST_WIDE_INT id;
 247 {
 248   XREF_SCOPE xs;
 249   XREF_FILE xf;
 250
 251   if (!doing_xref) return;
 252   xf = find_file (input_filename);
 253
 254   xs = PALLOC (XREF_SCOPE_INFO);
 255   xs->file = xf;
 256   xs->start = lineno;
 257   if (xs->start <= 0) xs->start = 1;
 258   xs->gid = id;
 259   xs->lid = ++scope_ctr;
 260   xs->outer = cur_scope;
 261   cur_scope = xs;
 262 }
 263
 264 /* Finish a scope at level ID.
 265    INID is ???
 266    PRM is ???
 267    KEEP is nonzero iff this scope is retained (nonzero if it's
 268    a compiler-generated invisible scope).
 269    TRNS is ???  */
 270
 271 void
 272 GNU_xref_end_scope (id,inid,prm,keep)
 273    HOST_WIDE_INT id;
 274    HOST_WIDE_INT inid;
 275    int prm,keep;
 276 {
 277   XREF_FILE xf;
 278   XREF_SCOPE xs,lxs,oxs;
 279   char *stype;
 280
 281   if (!doing_xref) return;
 282   xf = find_file (input_filename);
 283   if (xf == NULL) return;
 284
 285   lxs = NULL;
 286   for (xs = cur_scope; xs != NULL; xs = xs->outer)
 287     {
 288       if (xs->gid == id) break;
 289       lxs = xs;
 290     }
 291   if (xs == NULL) return;
 292
 293   if (inid != 0) {
 294     for (oxs = cur_scope; oxs != NULL; oxs = oxs->outer) {
 295       if (oxs->gid == inid) break;
 296     }
 297     if (oxs == NULL) return;
 298     inid = oxs->lid;
 299   }
 300
 301   if (prm == 2) stype = "SUE";
 302   else if (prm != 0) stype = "ARGS";
 303   else if (keep == 2 || inid != 0) stype = "INTERN";
 304   else stype = "EXTERN";
 305
 306   fprintf (xref_file,"SCP %s %d %d %d %d %s\n",
 307            filename (xf), xs->start, lineno,xs->lid, inid, stype);
 308
 309   if (lxs == NULL) cur_scope = xs->outer;
 310   else lxs->outer = xs->outer;
 311
 312   free (xs);
 313 }
 314
 315 /* Output a reference to NAME in FNDECL.  */
 316
 317 void
 318 GNU_xref_ref (fndecl,name)
 319    tree fndecl;
 320    char *name;
 321 {
 322   XREF_FILE xf;
 323
 324   if (!doing_xref) return;
 325   xf = find_file (input_filename);
 326   if (xf == NULL) return;
 327
 328   fprintf (xref_file, "REF %s %d %s %s\n",
 329            filename (xf), lineno, fctname (fndecl), name);
 330 }
 331
 332 /* Output a reference to DECL in FNDECL.  */
 333
 334 void
 335 GNU_xref_decl (fndecl,decl)
 336    tree fndecl;
 337    tree decl;
 338 {
 339   XREF_FILE xf,xf1;
 340   char *cls = 0;
 341   char *name;
 342   char buf[10240];
 343   int uselin;
 344
 345   if (!doing_xref) return;
 346   xf = find_file (input_filename);
 347   if (xf == NULL) return;
 348
 349   uselin = FALSE;
 350
 351   if (TREE_CODE (decl) == TYPE_DECL) cls = "TYPEDEF";
 352   else if (TREE_CODE (decl) == FIELD_DECL) cls = "FIELD";
 353   else if (TREE_CODE (decl) == VAR_DECL)
 354     {
 355       if (fndecl == NULL && TREE_STATIC(decl)
 356           && TREE_READONLY(decl) && DECL_INITIAL(decl) != 0
 357           && !TREE_PUBLIC(decl) && !DECL_EXTERNAL(decl)
 358           && DECL_MODE(decl) != BLKmode) cls = "CONST";
 359       else if (DECL_EXTERNAL(decl)) cls = "EXTERN";
 360       else if (TREE_PUBLIC(decl)) cls = "EXTDEF";
 361       else if (TREE_STATIC(decl)) cls = "STATIC";
 362       else if (DECL_REGISTER(decl)) cls = "REGISTER";
 363       else cls = "AUTO";
 364     }
 365   else if (TREE_CODE (decl) == PARM_DECL) cls = "PARAM";
 366   else if (TREE_CODE (decl) == FIELD_DECL) cls = "FIELD";
 367   else if (TREE_CODE (decl) == CONST_DECL) cls = "CONST";
 368   else if (TREE_CODE (decl) == FUNCTION_DECL)
 369     {
 370       if (DECL_EXTERNAL (decl)) cls = "EXTERN";
 371       else if (TREE_PUBLIC (decl)) cls = "EFUNCTION";
 372       else cls = "SFUNCTION";
 373     }
 374   else if (TREE_CODE (decl) == LABEL_DECL) cls = "LABEL";
 375   else if (TREE_CODE (decl) == UNION_TYPE)
 376     {
 377       cls = "UNIONID";
 378       decl = TYPE_NAME (decl);
 379       uselin = TRUE;
 380     }
 381   else if (TREE_CODE (decl) == RECORD_TYPE)
 382     {
 383       if (CLASSTYPE_DECLARED_CLASS (decl)) cls = "CLASSID";
 384       else if (IS_SIGNATURE (decl)) cls = "SIGNATUREID";
 385       else cls = "STRUCTID";
 386       decl = TYPE_NAME (decl);
 387       uselin = TRUE;
 388     }
 389   else if (TREE_CODE (decl) == ENUMERAL_TYPE)
 390     {
 391       cls = "ENUMID";
 392       decl = TYPE_NAME (decl);
 393       uselin = TRUE;
 394     }
 395   else if (TREE_CODE (decl) == TEMPLATE_DECL)
 396     {
 397       if (TREE_CODE (DECL_RESULT (decl)) == TYPE_DECL)
 398         cls = "CLASSTEMP";
 399       else if (TREE_CODE (DECL_RESULT (decl)) == FUNCTION_DECL)
 400         cls = "FUNCTEMP";
 401       else if (TREE_CODE (DECL_RESULT (decl)) == VAR_DECL)
 402         cls = "VARTEMP";
 403       else
 404         my_friendly_abort (358);
 405       uselin = TRUE;
 406     }
 407   else cls = "UNKNOWN";
 408
 409   if (decl == NULL || DECL_NAME (decl) == NULL) return;
 410
 411   if (uselin && decl->decl.linenum > 0 && decl->decl.filename != NULL)
 412     {
 413       xf1 = find_file (decl->decl.filename);
 414       if (xf1 != NULL)
 415         {
 416           lineno = decl->decl.linenum;
 417           xf = xf1;
 418         }
 419     }
 420
 421   if (DECL_ASSEMBLER_NAME (decl))
 422     name = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl));
 423   else
 424     name = IDENTIFIER_POINTER (DECL_NAME (decl));
 425
 426   strcpy (buf, type_as_string (TREE_TYPE (decl), 0));
 427   simplify_type (buf);
 428
 429   fprintf (xref_file, "DCL %s %d %s %d %s %s %s\n",
 430            filename(xf), lineno, name,
 431            (cur_scope != NULL ? cur_scope->lid : 0),
 432            cls, fctname(fndecl), buf);
 433
 434   if (STREQL (cls, "STRUCTID") || STREQL (cls, "UNIONID")
 435       || STREQL (cls, "SIGNATUREID"))
 436     {
 437       cls = "CLASSID";
 438       fprintf (xref_file, "DCL %s %d %s %d %s %s %s\n",
 439                filename(xf), lineno,name,
 440                (cur_scope != NULL ? cur_scope->lid : 0),
 441                cls, fctname(fndecl), buf);
 442     }
 443 }
 444
 445 /* Output a reference to a call to NAME in FNDECL.  */
 446
 447 void
 448 GNU_xref_call (fndecl, name)
 449    tree fndecl;
 450    char *name;
 451 {
 452   XREF_FILE xf;
 453   char buf[1024];
 454   char *s;
 455
 456   if (!doing_xref) return;
 457   xf = find_file (input_filename);
 458   if (xf == NULL) return;
 459   name = fixname (name, buf);
 460
 461   for (s = name; *s != 0; ++s)
 462     if (*s == '_' && s[1] == '_') break;
 463   if (*s != 0) GNU_xref_ref (fndecl, name);
 464
 465   fprintf (xref_file, "CAL %s %d %s %s\n",
 466            filename (xf), lineno, name, fctname (fndecl));
 467 }
 468
 469 /* Output cross-reference info about FNDECL.  If non-NULL,
 470    ARGS are the arguments for the function (i.e., before the FUNCTION_DECL
 471    has been fully built).  */
 472
 473 void
 474 GNU_xref_function (fndecl, args)
 475    tree fndecl;
 476    tree args;
 477 {
 478   XREF_FILE xf;
 479   int ct;
 480   char buf[1024];
 481
 482   if (!doing_xref) return;
 483   xf = find_file (input_filename);
 484   if (xf == NULL) return;
 485
 486   ct = 0;
 487   buf[0] = 0;
 488   if (args == NULL) args = DECL_ARGUMENTS (fndecl);
 489
 490   GNU_xref_decl (NULL, fndecl);
 491
 492   for ( ; args != NULL; args = TREE_CHAIN (args))
 493     {
 494       GNU_xref_decl (fndecl,args);
 495       if (ct != 0) strcat (buf,",");
 496       strcat (buf, declname (args));
 497       ++ct;
 498     }
 499
 500   fprintf (xref_file, "PRC %s %d %s %d %d %s\n",
 501            filename(xf), lineno, declname(fndecl),
 502            (cur_scope != NULL ? cur_scope->lid : 0),
 503            ct, buf);
 504 }
 505
 506 /* Output cross-reference info about an assignment to NAME.  */
 507
 508 void
 509 GNU_xref_assign(name)
 510    tree name;
 511 {
 512   XREF_FILE xf;
 513
 514   if (!doing_xref) return;
 515   xf = find_file(input_filename);
 516   if (xf == NULL) return;
 517
 518   gen_assign(xf, name);
 519 }
 520
 521 static void
 522 gen_assign(xf, name)
 523    XREF_FILE xf;
 524    tree name;
 525 {
 526   char *s;
 527
 528   s = NULL;
 529
 530   switch (TREE_CODE (name))
 531     {
 532     case IDENTIFIER_NODE :
 533       s = IDENTIFIER_POINTER(name);
 534       break;
 535     case VAR_DECL :
 536       s = declname(name);
 537       break;
 538     case COMPONENT_REF :
 539       gen_assign(xf, TREE_OPERAND(name, 0));
 540       gen_assign(xf, TREE_OPERAND(name, 1));
 541       break;
 542     case INDIRECT_REF :
 543     case OFFSET_REF :
 544     case ARRAY_REF :
 545     case BUFFER_REF :
 546       gen_assign(xf, TREE_OPERAND(name, 0));
 547       break;
 548     case COMPOUND_EXPR :
 549       gen_assign(xf, TREE_OPERAND(name, 1));
 550       break;
 551       default :
 552       break;
 553     }
 554
 555   if (s != NULL)
 556     fprintf(xref_file, "ASG %s %d %s\n", filename(xf), lineno, s);
 557 }
 558
 559 /* Output cross-reference info about a class hierarchy.
 560    CLS is the class type of interest.  BASE is a baseclass
 561    for CLS.  PUB and VIRT give the access info about
 562    the class derivation.  FRND is nonzero iff BASE is a friend
 563    of CLS.
 564
 565    ??? Needs to handle nested classes.  */
 566
 567 void
 568 GNU_xref_hier(cls, base, pub, virt, frnd)
 569    char *cls;
 570    char *base;
 571    int pub;
 572    int virt;
 573    int frnd;
 574 {
 575   XREF_FILE xf;
 576
 577   if (!doing_xref) return;
 578   xf = find_file(input_filename);
 579   if (xf == NULL) return;
 580
 581   fprintf(xref_file, "HIE %s %d %s %s %d %d %d\n",
 582           filename(xf), lineno, cls, base, pub, virt, frnd);
 583 }
 584
 585 /* Output cross-reference info about class members.  CLS
 586    is the containing type; FLD is the class member.  */
 587
 588 void
 589 GNU_xref_member(cls, fld)
 590    tree cls;
 591    tree fld;
 592 {
 593   XREF_FILE xf;
 594   char *prot;
 595   int confg, pure;
 596   char *d;
 597 #ifdef XREF_SHORT_MEMBER_NAMES
 598   int i;
 599 #endif
 600   char buf[1024], bufa[1024];
 601
 602   if (!doing_xref) return;
 603   xf = find_file(fld->decl.filename);
 604   if (xf == NULL) return;
 605
 606   if (TREE_PRIVATE (fld)) prot = "PRIVATE";
 607   else if (TREE_PROTECTED(fld)) prot = "PROTECTED";
 608   else prot = "PUBLIC";
 609
 610   confg = 0;
 611   if (TREE_CODE (fld) == FUNCTION_DECL && DECL_CONST_MEMFUNC_P(fld))
 612     confg = 1;
 613   else if (TREE_CODE (fld) == CONST_DECL)
 614     confg = 1;
 615
 616   pure = 0;
 617   if (TREE_CODE (fld) == FUNCTION_DECL && DECL_ABSTRACT_VIRTUAL_P(fld))
 618     pure = 1;
 619
 620   d = IDENTIFIER_POINTER(cls);
 621   sprintf(buf, "%d%s", strlen(d), d);
 622 #ifdef XREF_SHORT_MEMBER_NAMES
 623   i = strlen(buf);
 624 #endif
 625   strcpy(bufa, declname(fld));
 626
 627 #ifdef XREF_SHORT_MEMBER_NAMES
 628   for (p = &bufa[1]; *p != 0; ++p)
 629     {
 630       if (p[0] == '_' && p[1] == '_' && p[2] >= '0' && p[2] <= '9') {
 631         if (strncmp(&p[2], buf, i) == 0) *p = 0;
 632         break;
 633       }
 634       else if (p[0] == '_' && p[1] == '_' && p[2] == 'C' && p[3] >= '0' && p[3] <= '9') {
 635         if (strncmp(&p[3], buf, i) == 0) *p = 0;
 636         break;
 637       }
 638     }
 639 #endif
 640
 641   fprintf(xref_file, "MEM %s %d %s %s %s %d %d %d %d %d %d %d\n",
 642           filename(xf), fld->decl.linenum, d,  bufa,  prot,
 643           (TREE_CODE (fld) == FUNCTION_DECL ? 0 : 1),
 644           (DECL_INLINE (fld) ? 1 : 0),
 645           (DECL_LANG_SPECIFIC(fld) && DECL_FRIEND_P(fld) ? 1 : 0),
 646           (DECL_VINDEX(fld) ? 1 : 0),
 647           (TREE_STATIC(fld) ? 1 : 0),
 648           pure, confg);
 649 }
 650
 651 /* Find file entry given name.  */
 652
 653 static XREF_FILE
 654 find_file(name)
 655    char *name;
 656 {
 657   XREF_FILE xf;
 658
 659   for (xf = all_files; xf != NULL; xf = xf->next) {
 660     if (STREQL(name, xf->name)) break;
 661   }
 662
 663   return xf;
 664 }
 665
 666 /* Return filename for output purposes.  */
 667
 668 static char *
 669 filename(xf)
 670    XREF_FILE xf;
 671 {
 672   if (xf == NULL) {
 673     last_file = NULL;
 674     return "*";
 675   }
 676
 677   if (last_file == xf) return "*";
 678
 679   last_file = xf;
 680
 681   return xf->outname;
 682 }
 683
 684 /* Return function name for output purposes.  */
 685
 686 static char *
 687 fctname(fndecl)
 688    tree fndecl;
 689 {
 690   static char fctbuf[1024];
 691   char *s;
 692
 693   if (fndecl == NULL && last_fndecl == NULL) return "*";
 694
 695   if (fndecl == NULL)
 696     {
 697       last_fndecl = NULL;
 698       return "*TOP*";
 699     }
 700
 701   if (fndecl == last_fndecl) return "*";
 702
 703   last_fndecl = fndecl;
 704
 705   s = declname(fndecl);
 706   s = fixname(s, fctbuf);
 707
 708   return s;
 709 }
 710
 711 /* Return decl name for output purposes.  */
 712
 713 static char *
 714 declname(dcl)
 715    tree dcl;
 716 {
 717   if (DECL_NAME (dcl) == NULL) return "?";
 718
 719   if (DECL_ASSEMBLER_NAME (dcl))
 720     return IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (dcl));
 721   else
 722     return IDENTIFIER_POINTER (DECL_NAME (dcl));
 723 }
 724
 725 /* Simplify a type string by removing unneeded parenthesis.  */
 726
 727 static void
 728 simplify_type(typ)
 729    char *typ;
 730 {
 731   char *s;
 732   int lvl, i;
 733
 734   i = strlen(typ);
 735   while (i > 0 && isspace(typ[i-1])) typ[--i] = 0;
 736
 737   if (i > 7 && STREQL(&typ[i-5], "const"))
 738     {
 739       typ[i-5] = 0;
 740       i -= 5;
 741     }
 742
 743   if (typ[i-1] != ')') return;
 744
 745   s = &typ[i-2];
 746   lvl = 1;
 747   while (*s != 0) {
 748     if (*s == ')') ++lvl;
 749     else if (*s == '(')
 750       {
 751         --lvl;
 752         if (lvl == 0)
 753           {
 754             s[1] = ')';
 755             s[2] = 0;
 756             break;
 757           }
 758       }
 759     --s;
 760   }
 761
 762   if (*s != 0 && s[-1] == ')')
 763     {
 764       --s;
 765       --s;
 766       if (*s == '(') s[2] = 0;
 767       else if (*s == ':') {
 768         while (*s != '(') --s;
 769         s[1] = ')';
 770         s[2] = 0;
 771       }
 772     }
 773 }
 774
 775 /* Fixup a function name (take care of embedded spaces).  */
 776
 777 static char *
 778 fixname(nam, buf)
 779    char *nam;
 780    char *buf;
 781 {
 782   char *s, *t;
 783   int fg;
 784
 785   s = nam;
 786   t = buf;
 787   fg = 0;
 788
 789   while (*s != 0)
 790     {
 791       if (*s == ' ')
 792         {
 793           *t++ = '\36';
 794           ++fg;
 795         }
 796       else *t++ = *s;
 797       ++s;
 798     }
 799   *t = 0;
 800
 801   if (fg == 0) return nam;
 802
 803   return buf;
 804 }
 805
 806 /* Open file for xreffing.  */
 807
 808 static void
 809 open_xref_file(file)
 810    char *file;
 811 {
 812   char *s, *t;
 813
 814 #ifdef XREF_FILE_NAME
 815   XREF_FILE_NAME (xref_name, file);
 816 #else
 817   s = rindex (file, '/');
 818   if (s == NULL)
 819     sprintf (xref_name, ".%s.gxref", file);
 820   else
 821     {
 822       ++s;
 823       strcpy (xref_name, file);
 824       t = rindex (xref_name, '/');
 825       ++t;
 826       *t++ = '.';
 827       strcpy (t, s);
 828       strcat (t, ".gxref");
 829     }
 830 #endif /* no XREF_FILE_NAME */
 831
 832   xref_file = fopen(xref_name, "w");
 833
 834   if (xref_file == NULL)
 835     {
 836       error("Can't create cross-reference file `%s'", xref_name);
 837       doing_xref = 0;
 838     }
 839 }