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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 (struct demangle_component *p,
  60                                enum demangle_component_type type,
  61                                struct demangle_component *left,
  62                                 struct demangle_component *right)
  63 {
  64   if (p == NULL)
  65     return 0;
  66   switch (type)
  67     {
  68     case DEMANGLE_COMPONENT_QUAL_NAME:
  69     case DEMANGLE_COMPONENT_LOCAL_NAME:
  70     case DEMANGLE_COMPONENT_TYPED_NAME:
  71     case DEMANGLE_COMPONENT_TEMPLATE:
  72     case DEMANGLE_COMPONENT_CONSTRUCTION_VTABLE:
  73     case DEMANGLE_COMPONENT_VENDOR_TYPE_QUAL:
  74     case DEMANGLE_COMPONENT_FUNCTION_TYPE:
  75     case DEMANGLE_COMPONENT_ARRAY_TYPE:
  76     case DEMANGLE_COMPONENT_PTRMEM_TYPE:
  77     case DEMANGLE_COMPONENT_ARGLIST:
  78     case DEMANGLE_COMPONENT_TEMPLATE_ARGLIST:
  79     case DEMANGLE_COMPONENT_UNARY:
  80     case DEMANGLE_COMPONENT_BINARY:
  81     case DEMANGLE_COMPONENT_BINARY_ARGS:
  82     case DEMANGLE_COMPONENT_TRINARY:
  83     case DEMANGLE_COMPONENT_TRINARY_ARG1:
  84     case DEMANGLE_COMPONENT_TRINARY_ARG2:
  85     case DEMANGLE_COMPONENT_LITERAL:
  86     case DEMANGLE_COMPONENT_LITERAL_NEG:
  87       break;
  88
  89       /* These component types only have one subtree.  */
  90     case DEMANGLE_COMPONENT_VTABLE:
  91     case DEMANGLE_COMPONENT_VTT:
  92     case DEMANGLE_COMPONENT_TYPEINFO:
  93     case DEMANGLE_COMPONENT_TYPEINFO_NAME:
  94     case DEMANGLE_COMPONENT_TYPEINFO_FN:
  95     case DEMANGLE_COMPONENT_THUNK:
  96     case DEMANGLE_COMPONENT_VIRTUAL_THUNK:
  97     case DEMANGLE_COMPONENT_COVARIANT_THUNK:
  98     case DEMANGLE_COMPONENT_JAVA_CLASS:
  99     case DEMANGLE_COMPONENT_GUARD:
 100     case DEMANGLE_COMPONENT_REFTEMP:
 101     case DEMANGLE_COMPONENT_RESTRICT:
 102     case DEMANGLE_COMPONENT_VOLATILE:
 103     case DEMANGLE_COMPONENT_CONST:
 104     case DEMANGLE_COMPONENT_RESTRICT_THIS:
 105     case DEMANGLE_COMPONENT_VOLATILE_THIS:
 106     case DEMANGLE_COMPONENT_CONST_THIS:
 107     case DEMANGLE_COMPONENT_POINTER:
 108     case DEMANGLE_COMPONENT_REFERENCE:
 109     case DEMANGLE_COMPONENT_COMPLEX:
 110     case DEMANGLE_COMPONENT_IMAGINARY:
 111     case DEMANGLE_COMPONENT_VENDOR_TYPE:
 112     case DEMANGLE_COMPONENT_CAST:
 113       if (right != NULL)
 114         return 0;
 115       break;
 116
 117     default:
 118       /* Other types do not use subtrees.  */
 119       return 0;
 120     }
 121
 122   p->type = type;
 123   p->u.s_binary.left = left;
 124   p->u.s_binary.right = right;
 125
 126   return 1;
 127 }
 128
 129 /* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE.  */
 130
 131 int
 132 cplus_demangle_fill_builtin_type (struct demangle_component *p,
 133                                   const char *type_name)
 134 {
 135   int len;
 136   unsigned int i;
 137
 138   if (p == NULL || type_name == NULL)
 139     return 0;
 140   len = strlen (type_name);
 141   for (i = 0; i < D_BUILTIN_TYPE_COUNT; ++i)
 142     {
 143       if (len == cplus_demangle_builtin_types[i].len
 144           && strcmp (type_name, cplus_demangle_builtin_types[i].name) == 0)
 145         {
 146           p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
 147           p->u.s_builtin.type = &cplus_demangle_builtin_types[i];
 148           return 1;
 149         }
 150     }
 151   return 0;
 152 }
 153
 154 /* Fill in a DEMANGLE_COMPONENT_OPERATOR.  */
 155
 156 int
 157 cplus_demangle_fill_operator (struct demangle_component *p,
 158                               const char *opname, int args)
 159 {
 160   int len;
 161   unsigned int i;
 162
 163   if (p == NULL || opname == NULL)
 164     return 0;
 165   len = strlen (opname);
 166   for (i = 0; cplus_demangle_operators[i].name != NULL; ++i)
 167     {
 168       if (len == cplus_demangle_operators[i].len
 169           && args == cplus_demangle_operators[i].args
 170           && strcmp (opname, cplus_demangle_operators[i].name) == 0)
 171         {
 172           p->type = DEMANGLE_COMPONENT_OPERATOR;
 173           p->u.s_operator.op = &cplus_demangle_operators[i];
 174           return 1;
 175         }
 176     }
 177   return 0;
 178 }
 179
 180 /* Translate a mangled name into components.  */
 181
 182 struct demangle_component *
 183 cplus_demangle_v3_components (const char *mangled, int options, void **mem)
 184 {
 185   size_t len;
 186   int type;
 187   struct d_info di;
 188   struct demangle_component *dc;
 189
 190   len = strlen (mangled);
 191
 192   if (mangled[0] == '_' && mangled[1] == 'Z')
 193     type = 0;
 194   else
 195     {
 196       if ((options & DMGL_TYPES) == 0)
 197         return NULL;
 198       type = 1;
 199     }
 200
 201   cplus_demangle_init_info (mangled, options, len, &di);
 202
 203   di.comps = ((struct demangle_component *)
 204               malloc (di.num_comps * sizeof (struct demangle_component)));
 205   di.subs = ((struct demangle_component **)
 206              malloc (di.num_subs * sizeof (struct demangle_component *)));
 207   if (di.comps == NULL || di.subs == NULL)
 208     {
 209       if (di.comps != NULL)
 210         free (di.comps);
 211       if (di.subs != NULL)
 212         free (di.subs);
 213       return NULL;
 214     }
 215
 216   if (! type)
 217     dc = cplus_demangle_mangled_name (&di, 1);
 218   else
 219     dc = cplus_demangle_type (&di);
 220
 221   /* If DMGL_PARAMS is set, then if we didn't consume the entire
 222      mangled string, then we didn't successfully demangle it.  */
 223   if ((options & DMGL_PARAMS) != 0 && d_peek_char (&di) != '\0')
 224     dc = NULL;
 225
 226   free (di.subs);
 227
 228   if (dc != NULL)
 229     *mem = di.comps;
 230   else
 231     free (di.comps);
 232
 233   return dc;
 234 }