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// file : Example/ExH/LogicToSystem/logic_to_system.cpp
// author : Boris Kolpackov <boris@kolpackov.net>
// copyright : Copyright (c) 2002-2003 Boris Kolpackov
// license : http://kolpackov.net/license.html
#include "Utility/ExH/System/Exception.hpp"
#include "Utility/ExH/Logic/Exception.hpp"
#include <iostream>
using std::cerr;
using std::endl;
struct SubsystemA
{
class Exception : public Utility::ExH::Logic::Exception {};
void
foo () throw (Exception)
{
throw Exception ();
}
};
struct SubsystemB
{
void
foo () throw (Utility::ExH::System::Exception)
{
SubsystemA a;
a.foo ();
// Here SubsystemB is using SunsystemA but cannot (forgot, doesnt't
// want to, doesn't know how to, etc - pick your favorite) handle
// exception thrown by SubsystemA. As a result exception is
// 'converted' to System::Exception.
}
};
int
main ()
{
try
{
SubsystemB b;
b.foo ();
}
catch (Utility::ExH::System::Exception const& ex)
{
cerr << "Caught Utility::ExH::System::Exception: "
<< ex.what ()
<< endl;
}
}
//$Id$
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