Error.hxx

/*
 * Copyright 2007-2017 Content Management AG
 * All rights reserved.
 *
 * author: Max Kellermann <mk@cm4all.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * - Redistributions of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 *
 * - Redistributions in binary form must reproduce the above copyright
 * notice, this list of conditions and the following disclaimer in the
 * documentation and/or other materials provided with the
 * distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
 * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef ODBUS_ERROR_HXX
#define ODBUS_ERROR_HXX

#include "util/Compiler.h"

#include <dbus/dbus.h>

namespace ODBus {

class Error {
	DBusError error;

public:
	Error() noexcept {
		dbus_error_init(&error);
	}

	~Error() noexcept {
		dbus_error_free(&error);
	}

	Error(const Error &) = delete;
	Error &operator=(const Error &) = delete;

	gcc_pure
	operator bool() const noexcept {
		return dbus_error_is_set(&error);
	}

	operator DBusError &() noexcept {
		return error;
	}

	operator DBusError *() noexcept {
		return &error;
	}

	const char *GetMessage() const noexcept {
		return error.message;
	}

	gcc_noreturn
	void Throw(const char *prefix) const;
	void CheckThrow(const char *prefix) const;
};

} /* namespace ODBus */

#endif