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/* error.cc
*
* Copyright 2002 The gtkmm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <glibmmconfig.h>
#include <glibmm/error.h>
#include <glibmm/wrap.h>
#include <glibmm/wrap_init.h>
#include <glib.h>
#include <map>
namespace
{
typedef std::map<GQuark,Glib::Error::ThrowFunc> ThrowFuncTable;
static ThrowFuncTable* throw_func_table = 0;
} // anonymous namespace
namespace Glib
{
Error::Error()
:
gobject_ (0)
{}
Error::Error(GQuark domain, int code, const Glib::ustring& message)
:
gobject_ (g_error_new_literal(domain, code, message.c_str()))
{}
Error::Error(GError* gobject, bool take_copy)
:
gobject_ ((take_copy && gobject) ? g_error_copy(gobject) : gobject)
{}
Error::Error(const Error& other)
:
Exception(other),
gobject_ ((other.gobject_) ? g_error_copy(other.gobject_) : 0)
{}
Error& Error::operator=(const Error& other)
{
if(gobject_ != other.gobject_)
{
if(gobject_)
{
g_error_free(gobject_);
gobject_ = 0;
}
if(other.gobject_)
{
gobject_ = g_error_copy(other.gobject_);
}
}
return *this;
}
Error::~Error() throw()
{
if(gobject_)
g_error_free(gobject_);
}
GQuark Error::domain() const
{
g_return_val_if_fail(gobject_ != 0, 0);
return gobject_->domain;
}
int Error::code() const
{
g_return_val_if_fail(gobject_ != 0, -1);
return gobject_->code;
}
Glib::ustring Error::what() const
{
g_return_val_if_fail(gobject_ != 0, "");
g_return_val_if_fail(gobject_->message != 0, "");
return gobject_->message;
}
bool Error::matches(GQuark domain, int code) const
{
return g_error_matches(gobject_, domain, code);
}
GError* Error::gobj()
{
return gobject_;
}
const GError* Error::gobj() const
{
return gobject_;
}
void Error::propagate(GError** dest)
{
g_propagate_error(dest, gobject_);
gobject_ = 0;
}
// static
void Error::register_init()
{
if(!throw_func_table)
{
throw_func_table = new ThrowFuncTable();
Glib::wrap_register_init();
Glib::wrap_init(); // make sure that at least the Glib exceptions are registered
}
}
// static
void Error::register_cleanup()
{
if(throw_func_table)
{
delete throw_func_table;
throw_func_table = 0;
}
}
// static
void Error::register_domain(GQuark domain, Error::ThrowFunc throw_func)
{
g_assert(throw_func_table != 0);
(*throw_func_table)[domain] = throw_func;
}
// static, noreturn
void Error::throw_exception(GError* gobject)
{
g_assert(gobject != 0);
// Just in case Gtk::Main hasn't been instantiated yet.
if(!throw_func_table)
register_init();
if(const ThrowFunc throw_func = (*throw_func_table)[gobject->domain])
{
(*throw_func)(gobject);
g_assert_not_reached();
}
g_warning("Glib::Error::throw_exception():\n "
"unknown error domain '%s': throwing generic Glib::Error exception\n",
(gobject->domain) ? g_quark_to_string(gobject->domain) : "(null)");
// Doesn't copy, because error-returning functions return a newly allocated GError for us.
throw Glib::Error(gobject);
}
} // namespace Glib
|
