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
58int
59cplus_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
132int
133cplus_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
157int
158cplus_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
183struct demangle_component *
184cplus_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}
234