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/************************************************************************
** Copyright 2007 Einar Otto Stangvik
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
/*
** This is a stub class which will be included multiple times in
** ExceptionExpecter.h. Expansions of preprocessor parameters and
** variables comes from the boost preprocessor helpers used in said
** header.
*/
template<typename E>
class ExceptionExpecter<E, BOOST_PP_ITERATION()>
{
public:
ExceptionExpecter(boost::function<void(details::CaughtExceptionType)> onCompleteFunctor)
: m_onCompleteFunctor(onCompleteFunctor),
m_caughtExceptionType(details::CaughtExceptionType_None)
{}
~ExceptionExpecter() {}
// Generate functions to throw an exception of the iterated type,
// from the expected exceptions type vector
BOOST_PP_REPEAT_2ND(BOOST_PP_ITERATION(), THROWEX, throwEx)
void execute(boost::function<void()> functor)
{
try
{
functor();
}
// Generate blocks to catch an exception of the iterated type,
// from the expected exceptions type vector
BOOST_PP_REPEAT_2ND(BOOST_PP_ITERATION(), CATCH, 0)
// Catch other exceptions
catch(...)
{
m_caughtExceptionType = details::CaughtExceptionType_Unknown;
m_rethrowFunctor = boost::bind(throwExUnexpected, _1);
m_onCompleteFunctor(m_caughtExceptionType);
return;
}
// No exceptions caught, call the completion functor
m_onCompleteFunctor(m_caughtExceptionType);
}
void rethrow(boost::function<void()> onDestroyException)
{
if(m_caughtExceptionType == details::CaughtExceptionType_Expected ||
m_caughtExceptionType == details::CaughtExceptionType_Unknown)
{
m_rethrowFunctor(onDestroyException);
}
}
/*!
** @brief releases any resources currently held by an ExceptionExpecter
** instance, and deletes the instance itself.
*/
inline void free()
{ delete this; }
private:
static void throwExUnexpected(boost::function<void()>& onExceptionDestroyed)
{
details::throwHooked(UnexpectedException(), onExceptionDestroyed);
}
boost::function<void(details::CaughtExceptionType)> m_onCompleteFunctor;
boost::function<void(boost::function<void()>&)> m_rethrowFunctor;
details::CaughtExceptionType m_caughtExceptionType;
};
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My name is Einar Otto Stangvik, and I'm a programmer based in Oslo, Norway. I mainly develop applications and software architectures targetting C++ on the Windows platform, but I have also got experience doing the same on Unix and Linux. The last few years I've used C# a lot, but native C++ is still my main focus.
As of July 2008, I'm a Microsoft MVP for Visual C++.
Follow me on Twitter:
@einaros
My code blog:
einaros.blogspot.com
My site:
www.indev.no