libiberty/cp-demint.c

   1 /* Demangler component interface functions.
   2    Copyright (C) 2004 Free Software Foundation, Inc.
   3    Written by Ian Lance Taylor <ian@wasabisystems.com>.
   4
   5    This file is part of the libiberty library, which is part of GCC.
   6
   7    This file 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 of the License, or
  10    (at your option) any later version.
  11
  12    In addition to the permissions in the GNU General Public License, the
  13    Free Software Foundation gives you unlimited permission to link the
  14    compiled version of this file into combinations with other programs,
  15    and to distribute those combinations without any restriction coming
  16    from the use of this file.  (The General Public License restrictions
  17    do apply in other respects; for example, they cover modification of
  18    the file, and distribution when not linked into a combined
  19    executable.)
  20
  21    This program is distributed in the hope that it will be useful,
  22    but WITHOUT ANY WARRANTY; without even the implied warranty of
  23    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  24    GNU General Public License for more details.
  25
  26    You should have received a copy of the GNU General Public License
  27    along with this program; if not, write to the Free Software
  28    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  29 */
  30
  31 /* This file implements a few interface functions which are provided
  32    for use with struct demangle_component trees.  These functions are
  33    declared in demangle.h.  These functions are closely tied to the
  34    demangler code in cp-demangle.c, and other interface functions can
  35    be found in that file.  We put these functions in a separate file
  36    because they are not needed by the demangler, and so we avoid
  37    having them pulled in by programs which only need the
  38    demangler.  */
  39
  40 #ifdef HAVE_CONFIG_H
  41 #include "config.h"
  42 #endif
  43
  44 #ifdef HAVE_STDLIB_H
  45 #include <stdlib.h>
  46 #endif
  47 #ifdef HAVE_STRING_H
  48 #include <string.h>
  49 #endif
  50
  51 #include "ansidecl.h"
  52 #include "libiberty.h"
  53 #include "demangle.h"
  54 #include "cp-demangle.h"
  55
  56 /* Fill in most component types.  */
  57
  58 int
  59 cplus_demangle_fill_component (p, type, left, right)
  60      struct demangle_component *p;
  61      enum demangle_component_type type;
  62      struct demangle_component *left;
  63      struct demangle_component *right;
  64 {
  65   if (p == NULL)
  66     return 0;
  67   switch (type)
  68     {
  69     case DEMANGLE_COMPONENT_QUAL_NAME:
  70     case DEMANGLE_COMPONENT_LOCAL_NAME:
  71     case DEMANGLE_COMPONENT_TYPED_NAME:
  72     case DEMANGLE_COMPONENT_TEMPLATE:
  73     case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
  74     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  75     case DEMANGLE_COMPONENT_FUNCTION_TYPE:
  76     case DEMANGLE_COMPONENT_ARRAY_TYPE:
  77     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  78     case DEMANGLE_COMPONENT_ARGLIST:
  79     case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
  80     case DEMANGLE_COMPONENT_UNARY:
  81     case DEMANGLE_COMPONENT_BINARY:
  82     case DEMANGLE_COMPONENT_BINARY_ARGS:
  83     case DEMANGLE_COMPONENT_TRINARY:
  84     case DEMANGLE_COMPONENT_TRINARY_ARG1:
  85     case DEMANGLE_COMPONENT_TRINARY_ARG2:
  86     case DEMANGLE_COMPONENT_LITERAL:
  87     case DEMANGLE_COMPONENT_LITERAL_NEG:
  88       break;
  89
  90       /* These component types only have one subtree.  */
  91     case DEMANGLE_COMPONENT_VTABLE:
  92     case DEMANGLE_COMPONENT_VTT:
  93     case DEMANGLE_COMPONENT_TYPEINFO:
  94     case DEMANGLE_COMPONENT_TYPEINFO_NAME:
  95     case DEMANGLE_COMPONENT_TYPEINFO_FN:
  96     case DEMANGLE_COMPONENT_THUNK:
  97     case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
  98     case DEMANGLE_COMPONENT_COVARIANT_THUNK:
  99     case DEMANGLE_COMPONENT_JAVA_CLASS:
 100     case DEMANGLE_COMPONENT_GUARD:
 101     case DEMANGLE_COMPONENT_REFTEMP:
 102     case DEMANGLE_COMPONENT_RESTRICT:
 103     case DEMANGLE_COMPONENT_VOLATILE:
 104     case DEMANGLE_COMPONENT_CONST:
 105     case DEMANGLE_COMPONENT_RESTRICT_THIS:
 106     case DEMANGLE_COMPONENT_VOLATILE_THIS:
 107     case DEMANGLE_COMPONENT_CONST_THIS:
 108     case DEMANGLE_COMPONENT_POINTER:
 109     case DEMANGLE_COMPONENT_REFERENCE:
 110     case DEMANGLE_COMPONENT_COMPLEX:
 111     case DEMANGLE_COMPONENT_IMAGINARY:
 112     case DEMANGLE_COMPONENT_VENDOR_TYPE:
 113     case DEMANGLE_COMPONENT_CAST:
 114       if (right != NULL)
 115         return 0;
 116       break;
 117
 118     default:
 119       /* Other types do not use subtrees.  */
 120       return 0;
 121     }
 122
 123   p->type = type;
 124   p->u.s_binary.left = left;
 125   p->u.s_binary.right = right;
 126
 127   return 1;
 128 }
 129
 130 /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE.  */
 131
 132 int
 133 cplus_demangle_fill_builtin_type (p, typename)
 134      struct demangle_component *p;
 135      const char *typename;
 136 {
 137   int len;
 138   unsigned int i;
 139
 140   if (p == NULL || typename == NULL)
 141     return 0;
 142   len = strlen (typename);
 143   for (i = 0; i < D_BUILTIN_TYPE_COUNT; ++i)
 144     {
 145       if (len == cplus_demangle_builtin_types[i].len
 146           && strcmp (typename, cplus_demangle_builtin_types[i].name) == 0)
 147         {
 148           p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
 149           p->u.s_builtin.type = &cplus_demangle_builtin_types[i];
 150           return 1;
 151         }
 152     }
 153   return 0;
 154 }
 155
 156 /* Fill in a DEMANGLE_COMPONENT_OPERATOR.  */
 157
 158 int
 159 cplus_demangle_fill_operator (p, opname, args)
 160      struct demangle_component *p;
 161      const char *opname;
 162      int args;
 163 {
 164   int len;
 165   unsigned int i;
 166
 167   if (p == NULL || opname == NULL)
 168     return 0;
 169   len = strlen (opname);
 170   for (i = 0; cplus_demangle_operators[i].name != NULL; ++i)
 171     {
 172       if (len == cplus_demangle_operators[i].len
 173           && args == cplus_demangle_operators[i].args
 174           && strcmp (opname, cplus_demangle_operators[i].name) == 0)
 175         {
 176           p->type = DEMANGLE_COMPONENT_OPERATOR;
 177           p->u.s_operator.op = &cplus_demangle_operators[i];
 178           return 1;
 179         }
 180     }
 181   return 0;
 182 }
 183
 184 /* Translate a mangled name into components.  */
 185
 186 struct demangle_component *
 187 cplus_demangle_v3_components (mangled, options, mem)
 188      const char *mangled;
 189      int options;
 190      void **mem;
 191 {
 192   size_t len;
 193   int type;
 194   struct d_info di;
 195   struct demangle_component *dc;
 196
 197   len = strlen (mangled);
 198
 199   if (mangled[0] == '_' && mangled[1] == 'Z')
 200     type = 0;
 201   else
 202     {
 203       if ((options & DMGL_TYPES) == 0)
 204         return NULL;
 205       type = 1;
 206     }
 207
 208   cplus_demangle_init_info (mangled, options, len, &di);
 209
 210   di.comps = ((struct demangle_component *)
 211               malloc (di.num_comps * sizeof (struct demangle_component)));
 212   di.subs = ((struct demangle_component **)
 213              malloc (di.num_subs * sizeof (struct demangle_component *)));
 214   if (di.comps == NULL || di.subs == NULL)
 215     {
 216       if (di.comps != NULL)
 217         free (di.comps);
 218       if (di.subs != NULL)
 219         free (di.subs);
 220       return NULL;
 221     }
 222
 223   if (! type)
 224     dc = cplus_demangle_mangled_name (&di, 1);
 225   else
 226     dc = cplus_demangle_type (&di);
 227
 228   /* If DMGL_PARAMS is set, then if we didn't consume the entire
 229      mangled string, then we didn't successfully demangle it.  */
 230   if ((options & DMGL_PARAMS) != 0 && d_peek_char (&di) != '\0')
 231     dc = NULL;
 232
 233   free (di.subs);
 234
 235   if (dc != NULL)
 236     *mem = di.comps;
 237   else
 238     free (di.comps);
 239
 240   return dc;
 241 }