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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_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_CONSTRUCTION_VTABLE:
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}