cp-demint.c revision 130561 
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
58int
59cplus_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
132int
133cplus_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
158int
159cplus_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
186struct demangle_component *
187cplus_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}
242