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/*
This file is part of cpp-ethereum.
cpp-ethereum 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.
cpp-ethereum 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 cpp-ethereum. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @file Assertions.h
* @author Christian <c@ethdev.com>
* @date 2015
*
* Assertion handling.
*/
#pragma once
#include "Exceptions.h"
#include "debugbreak.h"
namespace dev
{
#if defined(_MSC_VER)
#define ETH_FUNC __FUNCSIG__
#elif defined(__GNUC__)
#define ETH_FUNC __PRETTY_FUNCTION__
#else
#define ETH_FUNC __func__
#endif
#define asserts(A) ::dev::assertAux(A, #A, __LINE__, __FILE__, ETH_FUNC)
#define assertsEqual(A, B) ::dev::assertEqualAux(A, B, #A, #B, __LINE__, __FILE__, ETH_FUNC)
inline bool assertAux(bool _a, char const* _aStr, unsigned _line, char const* _file, char const* _func)
{
bool ret = _a;
if (!ret)
{
std::cerr << "Assertion failed:" << _aStr << " [func=" << _func << ", line=" << _line << ", file=" << _file << "]" << std::endl;
#if ETH_DEBUG
debug_break();
#endif
}
return !ret;
}
template<class A, class B>
inline bool assertEqualAux(A const& _a, B const& _b, char const* _aStr, char const* _bStr, unsigned _line, char const* _file, char const* _func)
{
bool ret = _a == _b;
if (!ret)
{
std::cerr << "Assertion failed: " << _aStr << " == " << _bStr << " [func=" << _func << ", line=" << _line << ", file=" << _file << "]" << std::endl;
std::cerr << " Fail equality: " << _a << "==" << _b << std::endl;
#if ETH_DEBUG
debug_break();
#endif
}
return !ret;
}
/// Assertion that throws an exception containing the given description if it is not met.
/// Use it as assertThrow(1 == 1, ExceptionType, "Mathematics is wrong.");
/// Do NOT supply an exception object as the second parameter.
#define assertThrow(_condition, _ExceptionType, _description) \
::dev::assertThrowAux<_ExceptionType>(_condition, _description, __LINE__, __FILE__, ETH_FUNC)
using errinfo_comment = boost::error_info<struct tag_comment, std::string>;
template <class _ExceptionType>
inline void assertThrowAux(
bool _condition,
::std::string const& _errorDescription,
unsigned _line,
char const* _file,
char const* _function
)
{
if (!_condition)
::boost::throw_exception(
_ExceptionType() <<
::dev::errinfo_comment(_errorDescription) <<
::boost::throw_function(_function) <<
::boost::throw_file(_file) <<
::boost::throw_line(_line)
);
}
template <class _ExceptionType>
inline void assertThrowAux(
void const* _pointer,
::std::string const& _errorDescription,
unsigned _line,
char const* _file,
char const* _function
)
{
assertThrowAux<_ExceptionType>(_pointer != nullptr, _errorDescription, _line, _file, _function);
}
}
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