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