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// Copyright Joakim Karlsson & Kim Gräsman 2010-2012.
// 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 IGLOO_EXCEPTIONS_H
#define IGLOO_EXCEPTIONS_H
#include "assert.h"
namespace snowhouse {
template <typename ExceptionType>
class ExceptionStorage
{
public:
static void last_exception(ExceptionType*** e, bool clear=false)
{
static ExceptionType* last = NULL;
if(clear && last)
{
delete last;
return;
}
*e = &last;
silly_warning_about_unused_arg(e);
}
static ExceptionType*** silly_warning_about_unused_arg(ExceptionType*** e)
{
return e;
}
static void store(const ExceptionType& e)
{
ExceptionType** last = NULL;
last_exception(&last);
if(*last)
{
delete *last;
*last = NULL;
}
*last = new ExceptionType(e);
}
void compiler_thinks_i_am_unused() {}
~ExceptionStorage()
{
ExceptionType** e = NULL;
last_exception(&e);
if(*e)
{
delete *e;
*e = NULL;
}
}
};
template <typename ExceptionType>
inline ExceptionType& LastException()
{
ExceptionType** e = NULL;
ExceptionStorage<ExceptionType>::last_exception(&e);
if(*e == NULL)
{
Assert::Failure("No exception was stored");
}
return **e;
}
}
#define IGLOO_CONCAT2(a, b) a##b
#define IGLOO_CONCAT(a, b) IGLOO_CONCAT2(a, b)
#define SNOWHOUSE_ASSERT_THROWS(EXCEPTION_TYPE, METHOD, FAILURE_HANDLER_TYPE) \
::snowhouse::ExceptionStorage<EXCEPTION_TYPE> IGLOO_CONCAT(IGLOO_storage_, __LINE__); IGLOO_CONCAT(IGLOO_storage_, __LINE__).compiler_thinks_i_am_unused(); \
{ \
bool wrong_exception = false; \
bool no_exception = false; \
try \
{ \
METHOD; \
no_exception = true; \
} \
catch (const EXCEPTION_TYPE& e) \
{ \
::snowhouse::ExceptionStorage<EXCEPTION_TYPE>::store(e); \
} \
catch(...) \
{ \
wrong_exception = true; \
} \
if(no_exception) \
{ \
std::ostringstream stm; \
stm << "Expected " << #EXCEPTION_TYPE << ". No exception was thrown."; \
::snowhouse::ConfigurableAssert<FAILURE_HANDLER_TYPE>::Failure(stm.str()); \
} \
if(wrong_exception) \
{ \
std::ostringstream stm; \
stm << "Expected " << #EXCEPTION_TYPE << ". Wrong exception was thrown."; \
::snowhouse::ConfigurableAssert<FAILURE_HANDLER_TYPE>::Failure(stm.str()); \
} \
}
#ifndef SNOWHOUSE_NO_MACROS
#define AssertThrows(EXCEPTION_TYPE, METHOD) SNOWHOUSE_ASSERT_THROWS(EXCEPTION_TYPE, (METHOD), ::snowhouse::DefaultFailureHandler)
#endif // SNOWHOUSE_NO_MACROS
#endif
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