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     case DEMANGLE_COMPONENT_CONVERSION:
 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 (struct demangle_component *p,
 134                                   const char *type_name)
 135 {
 136   int len;
 137   unsigned int i;
 138
 139   if (p == NULL || type_name == NULL)
 140     return 0;
 141   len = strlen (type_name);
 142   for (i = 0; i < D_BUILTIN_TYPE_COUNT; ++i)
 143     {
 144       if (len == cplus_demangle_builtin_types[i].len
 145           && strcmp (type_name, cplus_demangle_builtin_types[i].name) == 0)
 146         {
 147           p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
 148           p->u.s_builtin.type = &cplus_demangle_builtin_types[i];
 149           return 1;
 150         }
 151     }
 152   return 0;
 153 }
 154
 155 /* Fill in a DEMANGLE_COMPONENT_OPERATOR.  */
 156
 157 int
 158 cplus_demangle_fill_operator (struct demangle_component *p,
 159                               const char *opname, int args)
 160 {
 161   int len;
 162   unsigned int i;
 163
 164   if (p == NULL || opname == NULL)
 165     return 0;
 166   len = strlen (opname);
 167   for (i = 0; cplus_demangle_operators[i].name != NULL; ++i)
 168     {
 169       if (len == cplus_demangle_operators[i].len
 170           && args == cplus_demangle_operators[i].args
 171           && strcmp (opname, cplus_demangle_operators[i].name) == 0)
 172         {
 173           p->type = DEMANGLE_COMPONENT_OPERATOR;
 174           p->u.s_operator.op = &cplus_demangle_operators[i];
 175           return 1;
 176         }
 177     }
 178   return 0;
 179 }
 180
 181 /* Translate a mangled name into components.  */
 182
 183 struct demangle_component *
 184 cplus_demangle_v3_components (const char *mangled, int options, void **mem)
 185 {
 186   size_t len;
 187   int type;
 188   struct d_info di;
 189   struct demangle_component *dc;
 190
 191   len = strlen (mangled);
 192
 193   if (mangled[0] == '_' && mangled[1] == 'Z')
 194     type = 0;
 195   else
 196     {
 197       if ((options & DMGL_TYPES) == 0)
 198         return NULL;
 199       type = 1;
 200     }
 201
 202   cplus_demangle_init_info (mangled, options, len, &di);
 203
 204   di.comps = ((struct demangle_component *)
 205               malloc (di.num_comps * sizeof (struct demangle_component)));
 206   di.subs = ((struct demangle_component **)
 207              malloc (di.num_subs * sizeof (struct demangle_component *)));
 208   if (di.comps == NULL || di.subs == NULL)
 209     {
 210       free (di.comps);
 211       free (di.subs);
 212       return NULL;
 213     }
 214
 215   if (! type)
 216     dc = cplus_demangle_mangled_name (&di, 1);
 217   else
 218     dc = cplus_demangle_type (&di);
 219
 220   /* If DMGL_PARAMS is set, then if we didn't consume the entire
 221      mangled string, then we didn't successfully demangle it.  */
 222   if ((options & DMGL_PARAMS) != 0 && d_peek_char (&di) != '\0')
 223     dc = NULL;
 224
 225   free (di.subs);
 226
 227   if (dc != NULL)
 228     *mem = di.comps;
 229   else
 230     free (di.comps);
 231
 232   return dc;
 233 }