solidity/libdevcore/Exceptions.h

/*
	This file is part of solidity.

	solidity 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 3 of the License, or
	(at your option) any later version.

	solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file Exceptions.h
 * @author Gav Wood <i@gavwood.com>
 * @date 2014
 */

#pragma once

#include <exception>
#include <string>
#include <boost/exception/exception.hpp>
#include <boost/exception/info.hpp>
#include <boost/exception/info_tuple.hpp>
#include <boost/exception/diagnostic_information.hpp>
#include <boost/throw_exception.hpp>
#include <boost/tuple/tuple.hpp>
#include "CommonData.h"
#include "FixedHash.h"

namespace dev
{

/// Base class for all exceptions.
struct Exception: virtual std::exception, virtual boost::exception
{
	Exception(std::string _message = std::string()): m_message(std::move(_message)) {}
	const char* what() const noexcept override { return m_message.empty() ? std::exception::what() : m_message.c_str(); }

	/// @returns "FileName:LineNumber" referring to the point where the exception was thrown.
	std::string lineInfo() const;

private:
	std::string m_message;
};

#define DEV_SIMPLE_EXCEPTION(X) struct X: virtual Exception { const char* what() const noexcept override { return #X; } }

DEV_SIMPLE_EXCEPTION(BadHexCharacter);
DEV_SIMPLE_EXCEPTION(FileError);

// error information to be added to exceptions
using errinfo_invalidSymbol = boost::error_info<struct tag_invalidSymbol, char>;
using errinfo_comment = boost::error_info<struct tag_comment, std::string>;

}