142 lines
3.3 KiB
C
142 lines
3.3 KiB
C
/* Helper routines for C++ support in GDB.
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Copyright 2002 Free Software Foundation, Inc.
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Contributed by MontaVista Software.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "cp-support.h"
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#include "gdb_string.h"
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#include "demangle.h"
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/* Find the last component of the demangled C++ name NAME. NAME
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must be a method name including arguments, in order to correctly
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locate the last component.
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This function return a pointer to the first colon before the
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last component, or NULL if the name had only one component. */
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static const char *
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find_last_component (const char *name)
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{
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const char *p;
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int depth;
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/* Functions can have local classes, so we need to find the
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beginning of the last argument list, not the end of the first
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one. */
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p = name + strlen (name) - 1;
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while (p > name && *p != ')')
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p--;
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if (p == name)
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return NULL;
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/* P now points at the `)' at the end of the argument list. Walk
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back to the beginning. */
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p--;
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depth = 1;
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while (p > name && depth > 0)
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{
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if (*p == '<' || *p == '(')
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depth--;
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else if (*p == '>' || *p == ')')
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depth++;
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p--;
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}
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if (p == name)
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return NULL;
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while (p > name && *p != ':')
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p--;
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if (p == name || p == name + 1 || p[-1] != ':')
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return NULL;
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return p - 1;
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}
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/* Return the name of the class containing method PHYSNAME. */
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char *
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class_name_from_physname (const char *physname)
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{
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char *ret = NULL;
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const char *end;
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int depth = 0;
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char *demangled_name = cplus_demangle (physname, DMGL_ANSI);
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if (demangled_name == NULL)
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return NULL;
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end = find_last_component (demangled_name);
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if (end != NULL)
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{
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ret = xmalloc (end - demangled_name + 1);
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memcpy (ret, demangled_name, end - demangled_name);
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ret[end - demangled_name] = '\0';
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}
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xfree (demangled_name);
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return ret;
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}
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/* Return the name of the method whose linkage name is PHYSNAME. */
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char *
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method_name_from_physname (const char *physname)
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{
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char *ret = NULL;
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const char *end;
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int depth = 0;
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char *demangled_name = cplus_demangle (physname, DMGL_ANSI);
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if (demangled_name == NULL)
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return NULL;
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end = find_last_component (demangled_name);
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if (end != NULL)
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{
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char *args;
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int len;
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/* Skip "::". */
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end = end + 2;
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/* Find the argument list, if any. */
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args = strchr (end, '(');
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if (args == NULL)
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len = strlen (end + 2);
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else
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{
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args --;
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while (*args == ' ')
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args --;
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len = args - end + 1;
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}
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ret = xmalloc (len + 1);
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memcpy (ret, end, len);
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ret[len] = 0;
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}
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xfree (demangled_name);
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return ret;
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}
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