catch2/include/internal/catch_interfaces_exception.h
Phil Nash a49f088032 exception translators considered even for types deriving from std::exception, now
- also added docs for exception translators
- updated approvals
2015-11-18 08:39:21 +00:00

75 lines
2.7 KiB
C++

/*
* Created by Phil on 20/04/2011.
* Copyright 2011 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef TWOBLUECUBES_CATCH_INTERFACES_EXCEPTION_H_INCLUDED
#define TWOBLUECUBES_CATCH_INTERFACES_EXCEPTION_H_INCLUDED
#include <string>
#include <vector>
#include "catch_interfaces_registry_hub.h"
namespace Catch {
typedef std::string(*exceptionTranslateFunction)();
struct IExceptionTranslator;
typedef std::vector<const IExceptionTranslator*> ExceptionTranslators;
struct IExceptionTranslator {
virtual ~IExceptionTranslator();
virtual std::string translate( ExceptionTranslators::const_iterator it, ExceptionTranslators::const_iterator itEnd ) const = 0;
};
struct IExceptionTranslatorRegistry {
virtual ~IExceptionTranslatorRegistry();
virtual std::string translateActiveException() const = 0;
};
class ExceptionTranslatorRegistrar {
template<typename T>
class ExceptionTranslator : public IExceptionTranslator {
public:
ExceptionTranslator( std::string(*translateFunction)( T& ) )
: m_translateFunction( translateFunction )
{}
virtual std::string translate( ExceptionTranslators::const_iterator it, ExceptionTranslators::const_iterator itEnd ) const CATCH_OVERRIDE {
try {
if( it == itEnd )
throw;
else
return (*it)->translate( it+1, itEnd );
}
catch( T& ex ) {
return m_translateFunction( ex );
}
}
protected:
std::string(*m_translateFunction)( T& );
};
public:
template<typename T>
ExceptionTranslatorRegistrar( std::string(*translateFunction)( T& ) ) {
getMutableRegistryHub().registerTranslator
( new ExceptionTranslator<T>( translateFunction ) );
}
};
}
///////////////////////////////////////////////////////////////////////////////
#define INTERNAL_CATCH_TRANSLATE_EXCEPTION( signature ) \
static std::string INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionTranslator )( signature ); \
namespace{ Catch::ExceptionTranslatorRegistrar INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionRegistrar )( &INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionTranslator ) ); }\
static std::string INTERNAL_CATCH_UNIQUE_NAME( catch_internal_ExceptionTranslator )( signature )
#endif // TWOBLUECUBES_CATCH_INTERFACES_EXCEPTION_H_INCLUDED