office-gobmx/cppuhelper/source/exc_thrower.cxx
Rüdiger Timm 91ac60886c INTEGRATION: CWS changefileheader (1.11.50); FILE MERGED
2008/03/28 15:25:25 rt 1.11.50.1: #i87441# Change license header to LPGL v3.
2008-04-11 10:33:14 +00:00

301 lines
9.3 KiB
C++

/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: exc_thrower.cxx,v $
* $Revision: 1.12 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_cppuhelper.hxx"
#include "osl/diagnose.h"
#include "osl/doublecheckedlocking.h"
#include "osl/mutex.hxx"
#include "uno/dispatcher.hxx"
#include "uno/mapping.hxx"
#include "cppuhelper/detail/XExceptionThrower.hpp"
#include "com/sun/star/uno/RuntimeException.hpp"
#include "cppuhelper/exc_hlp.hxx"
#define OUSTR(x) ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(x) )
using namespace ::rtl;
using namespace ::osl;
using namespace ::cppu;
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;
namespace
{
using cppuhelper::detail::XExceptionThrower;
//==============================================================================
struct ExceptionThrower : public uno_Interface, XExceptionThrower
{
inline ExceptionThrower();
public:
static ExceptionThrower * get();
static inline Type const & getCppuType()
{
return ::getCppuType(
reinterpret_cast< Reference< XExceptionThrower > const * >(0) );
}
// XInterface
virtual Any SAL_CALL queryInterface( Type const & type )
throw (RuntimeException);
virtual void SAL_CALL acquire() throw ();
virtual void SAL_CALL release() throw ();
// XExceptionThrower
virtual void SAL_CALL throwException( Any const & exc ) throw (Exception);
virtual void SAL_CALL rethrowException() throw (Exception);
};
extern "C"
{
//------------------------------------------------------------------------------
static void SAL_CALL ExceptionThrower_acquire_release_nop( uno_Interface * )
{
}
//------------------------------------------------------------------------------
static void SAL_CALL ExceptionThrower_dispatch(
uno_Interface * pUnoI, typelib_TypeDescription const * pMemberType,
void * pReturn, void * pArgs [], uno_Any ** ppException )
{
OSL_ASSERT( pMemberType->eTypeClass == typelib_TypeClass_INTERFACE_METHOD );
switch (reinterpret_cast< typelib_InterfaceMemberTypeDescription * >(
const_cast< typelib_TypeDescription * >( pMemberType ) )->
nPosition)
{
case 0: // queryInterace()
{
Type const & rType_demanded =
*reinterpret_cast< Type const * >( pArgs[ 0 ] );
if (rType_demanded.equals(
::getCppuType( reinterpret_cast<
Reference< XInterface > const * >(0) ) ) ||
rType_demanded.equals( ExceptionThrower::getCppuType() ))
{
typelib_TypeDescription * pTD = 0;
TYPELIB_DANGER_GET( &pTD, rType_demanded.getTypeLibType() );
uno_any_construct(
reinterpret_cast< uno_Any * >( pReturn ), &pUnoI, pTD, 0 );
TYPELIB_DANGER_RELEASE( pTD );
}
else
{
uno_any_construct(
reinterpret_cast< uno_Any * >( pReturn ), 0, 0, 0 );
}
*ppException = 0;
break;
}
case 1: // acquire()
case 2: // release()
*ppException = 0;
break;
case 3: // throwException()
{
uno_Any * pAny = reinterpret_cast< uno_Any * >( pArgs[ 0 ] );
OSL_ASSERT( pAny->pType->eTypeClass == typelib_TypeClass_EXCEPTION );
uno_type_any_construct( *ppException, pAny->pData, pAny->pType, 0 );
break;
}
default:
{
OSL_ASSERT( 0 );
RuntimeException exc(
OUSTR("not implemented!"), Reference< XInterface >() );
uno_type_any_construct(
*ppException, &exc, ::getCppuType( &exc ).getTypeLibType(), 0 );
break;
}
}
}
} // extern "C"
//______________________________________________________________________________
Any ExceptionThrower::queryInterface( Type const & type )
throw (RuntimeException)
{
if (type.equals( ::getCppuType( reinterpret_cast<
Reference< XInterface > const * >(0) ) ) ||
type.equals( ExceptionThrower::getCppuType() ))
{
XExceptionThrower * that = static_cast< XExceptionThrower * >( this );
return Any( &that, type );
}
return Any();
}
//______________________________________________________________________________
void ExceptionThrower::acquire() throw ()
{
}
//______________________________________________________________________________
void ExceptionThrower::release() throw ()
{
}
//______________________________________________________________________________
void ExceptionThrower::throwException( Any const & exc ) throw (Exception)
{
OSL_ENSURE( 0, "unexpected!" );
throwException( exc );
}
//______________________________________________________________________________
void ExceptionThrower::rethrowException() throw (Exception)
{
throw;
}
//______________________________________________________________________________
inline ExceptionThrower::ExceptionThrower()
{
uno_Interface::acquire = ExceptionThrower_acquire_release_nop;
uno_Interface::release = ExceptionThrower_acquire_release_nop;
uno_Interface::pDispatcher = ExceptionThrower_dispatch;
}
//______________________________________________________________________________
ExceptionThrower * ExceptionThrower::get()
{
ExceptionThrower * s_pThrower = 0;
if (s_pThrower == 0)
{
MutexGuard guard( Mutex::getGlobalMutex() );
static ExceptionThrower s_thrower;
OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
s_pThrower = &s_thrower;
}
else
{
OSL_DOUBLE_CHECKED_LOCKING_MEMORY_BARRIER();
}
return s_pThrower;
}
} // anonymous namespace
namespace cppu
{
//==============================================================================
void SAL_CALL throwException( Any const & exc ) SAL_THROW( (Exception) )
{
if (exc.getValueTypeClass() != TypeClass_EXCEPTION)
{
throw RuntimeException(
OUSTR("no UNO exception given "
"(must be derived from com::sun::star::uno::Exception)!"),
Reference< XInterface >() );
}
Mapping uno2cpp(Environment(OUSTR(UNO_LB_UNO)), Environment::getCurrent());
if (! uno2cpp.is())
{
throw RuntimeException(
OUSTR("cannot get binary UNO to C++ mapping!"),
Reference< XInterface >() );
}
Reference< XExceptionThrower > xThrower;
uno2cpp.mapInterface(
reinterpret_cast< void ** >( &xThrower ),
static_cast< uno_Interface * >( ExceptionThrower::get() ),
ExceptionThrower::getCppuType() );
OSL_ASSERT( xThrower.is() );
xThrower->throwException( exc );
}
//==============================================================================
Any SAL_CALL getCaughtException()
{
Mapping cpp2uno(Environment::getCurrent(), Environment(OUSTR(UNO_LB_UNO)));
if (! cpp2uno.is())
{
throw RuntimeException(
OUSTR("cannot get C++ to binary UNO mapping!"),
Reference< XInterface >() );
}
Mapping uno2cpp(Environment(OUSTR(UNO_LB_UNO)), Environment::getCurrent());
if (! uno2cpp.is())
{
throw RuntimeException(
OUSTR("cannot get binary UNO to C++ mapping!"),
Reference< XInterface >() );
}
typelib_TypeDescription * pTD = 0;
TYPELIB_DANGER_GET(
&pTD, ExceptionThrower::getCppuType().getTypeLibType() );
UnoInterfaceReference unoI;
cpp2uno.mapInterface(
reinterpret_cast< void ** >( &unoI.m_pUnoI ),
static_cast< XExceptionThrower * >( ExceptionThrower::get() ), pTD );
OSL_ASSERT( unoI.is() );
typelib_TypeDescription * pMemberTD = 0;
TYPELIB_DANGER_GET(
&pMemberTD,
reinterpret_cast< typelib_InterfaceTypeDescription * >( pTD )->
ppMembers[ 1 ] /* rethrowException() */ );
uno_Any exc_mem;
uno_Any * exc = &exc_mem;
unoI.dispatch( pMemberTD, 0, 0, &exc );
TYPELIB_DANGER_RELEASE( pMemberTD );
TYPELIB_DANGER_RELEASE( pTD );
if (exc == 0)
{
throw RuntimeException(
OUSTR("rethrowing C++ exception failed!"),
Reference< XInterface >() );
}
Any ret;
uno_any_destruct( &ret, reinterpret_cast< uno_ReleaseFunc >(cpp_release) );
uno_type_any_constructAndConvert(
&ret, exc->pData, exc->pType, uno2cpp.get() );
uno_any_destruct( exc, 0 );
return ret;
}
}