cp-demint.c revision 1.1.1.7 
1/* Demangler component interface functions.
2   Copyright (C) 2004-2018 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_RVALUE_REFERENCE:
110    case DEMANGLE_COMPONENT_COMPLEX:
111    case DEMANGLE_COMPONENT_IMAGINARY:
112    case DEMANGLE_COMPONENT_VENDOR_TYPE:
113    case DEMANGLE_COMPONENT_CAST:
114    case DEMANGLE_COMPONENT_CONVERSION:
115      if (right != NULL)
116	return 0;
117      break;
118
119    default:
120      /* Other types do not use subtrees.  */
121      return 0;
122    }
123
124  p->type = type;
125  p->u.s_binary.left = left;
126  p->u.s_binary.right = right;
127  p->d_printing = 0;
128
129  return 1;
130}
131
132/* Fill in a DEMANGLE_COMPONENT_BUILTIN_TYPE.  */
133
134int
135cplus_demangle_fill_builtin_type (struct demangle_component *p,
136                                  const char *type_name)
137{
138  int len;
139  unsigned int i;
140
141  if (p == NULL || type_name == NULL)
142    return 0;
143  len = strlen (type_name);
144  for (i = 0; i < D_BUILTIN_TYPE_COUNT; ++i)
145    {
146      if (len == cplus_demangle_builtin_types[i].len
147	  && strcmp (type_name, cplus_demangle_builtin_types[i].name) == 0)
148	{
149	  p->type = DEMANGLE_COMPONENT_BUILTIN_TYPE;
150	  p->u.s_builtin.type = &cplus_demangle_builtin_types[i];
151	  p->d_printing = 0;
152	  return 1;
153	}
154    }
155  return 0;
156}
157
158/* Fill in a DEMANGLE_COMPONENT_OPERATOR.  */
159
160int
161cplus_demangle_fill_operator (struct demangle_component *p,
162                              const char *opname, 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	  p->d_printing = 0;
179	  return 1;
180	}
181    }
182  return 0;
183}
184
185/* Translate a mangled name into components.  */
186
187struct demangle_component *
188cplus_demangle_v3_components (const char *mangled, int options, void **mem)
189{
190  size_t len;
191  int type;
192  struct d_info di;
193  struct demangle_component *dc;
194
195  len = strlen (mangled);
196
197  if (mangled[0] == '_' && mangled[1] == 'Z')
198    type = 0;
199  else
200    {
201      if ((options & DMGL_TYPES) == 0)
202	return NULL;
203      type = 1;
204    }
205
206  cplus_demangle_init_info (mangled, options, len, &di);
207
208  di.comps = ((struct demangle_component *)
209	      malloc (di.num_comps * sizeof (struct demangle_component)));
210  di.subs = ((struct demangle_component **)
211	     malloc (di.num_subs * sizeof (struct demangle_component *)));
212  if (di.comps == NULL || di.subs == NULL)
213    {
214      free (di.comps);
215      free (di.subs);
216      return NULL;
217    }
218
219  if (! type)
220    dc = cplus_demangle_mangled_name (&di, 1);
221  else
222    dc = cplus_demangle_type (&di);
223
224  /* If DMGL_PARAMS is set, then if we didn't consume the entire
225     mangled string, then we didn't successfully demangle it.  */
226  if ((options & DMGL_PARAMS) != 0 && d_peek_char (&di) != '\0')
227    dc = NULL;
228
229  free (di.subs);
230
231  if (dc != NULL)
232    *mem = di.comps;
233  else
234    free (di.comps);
235
236  return dc;
237}
238