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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include <bridge.hxx>
#include <cppinterfaceproxy.hxx>
#include <unointerfaceproxy.hxx>
#include <com/sun/star/uno/XInterface.hpp>
#include <rtl/ustring.h>
#include <sal/types.h>
#include <typelib/typedescription.h>
#include <uno/dispatcher.h>
#include <uno/environment.h>
#include <uno/mapping.h>
namespace bridges::cpp_uno::shared {
void freeMapping(uno_Mapping * pMapping)
{
delete static_cast< Bridge::Mapping * >( pMapping )->pBridge;
}
void acquireMapping(uno_Mapping * pMapping)
{
static_cast< Bridge::Mapping * >( pMapping )->pBridge->acquire();
}
void releaseMapping(uno_Mapping * pMapping)
{
static_cast< Bridge::Mapping * >( pMapping )->pBridge->release();
}
void cpp2unoMapping(
uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
typelib_InterfaceTypeDescription * pTypeDescr)
{
assert(ppUnoI && pTypeDescr);
if (*ppUnoI)
{
(*static_cast< uno_Interface * >( *ppUnoI )->release)(
static_cast< uno_Interface * >( *ppUnoI ) );
*ppUnoI = nullptr;
}
if (!pCppI)
return;
Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
// get object id of interface to be wrapped
rtl_uString * pOId = nullptr;
(*pBridge->pCppEnv->getObjectIdentifier)(
pBridge->pCppEnv, &pOId, pCppI );
assert(pOId);
// try to get any known interface from target environment
(*pBridge->pUnoEnv->getRegisteredInterface)(
pBridge->pUnoEnv, ppUnoI, pOId, pTypeDescr );
if (! *ppUnoI) // no existing interface, register new proxy interface
{
// try to publish a new proxy (refcount initially 1)
uno_Interface * pSurrogate
= bridges::cpp_uno::shared::UnoInterfaceProxy::create(
pBridge,
static_cast< ::com::sun::star::uno::XInterface * >( pCppI ),
pTypeDescr, pOId );
// proxy may be exchanged during registration
(*pBridge->pUnoEnv->registerProxyInterface)(
pBridge->pUnoEnv, reinterpret_cast< void ** >( &pSurrogate ),
freeUnoInterfaceProxy, pOId,
pTypeDescr );
*ppUnoI = pSurrogate;
}
::rtl_uString_release( pOId );
}
void uno2cppMapping(
uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
typelib_InterfaceTypeDescription * pTypeDescr)
{
assert(ppCppI && pTypeDescr);
if (*ppCppI)
{
static_cast< ::com::sun::star::uno::XInterface * >( *ppCppI )->
release();
*ppCppI = nullptr;
}
if (!pUnoI)
return;
Bridge * pBridge = static_cast< Bridge::Mapping * >( pMapping )->pBridge;
// get object id of uno interface to be wrapped
rtl_uString * pOId = nullptr;
(*pBridge->pUnoEnv->getObjectIdentifier)(
pBridge->pUnoEnv, &pOId, pUnoI );
assert(pOId);
// try to get any known interface from target environment
(*pBridge->pCppEnv->getRegisteredInterface)(
pBridge->pCppEnv, ppCppI, pOId, pTypeDescr );
if (! *ppCppI) // no existing interface, register new proxy interface
{
// try to publish a new proxy (ref count initially 1)
com::sun::star::uno::XInterface * pProxy
= bridges::cpp_uno::shared::CppInterfaceProxy::create(
pBridge, static_cast< uno_Interface * >( pUnoI ),
pTypeDescr, pOId );
// proxy may be exchanged during registration
(*pBridge->pCppEnv->registerProxyInterface)(
pBridge->pCppEnv, reinterpret_cast< void ** >( &pProxy ),
freeCppInterfaceProxy, pOId,
pTypeDescr );
*ppCppI = pProxy;
}
::rtl_uString_release( pOId );
}
uno_Mapping * Bridge::createMapping(
uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
bool bExportCpp2Uno)
{
Bridge * bridge = new Bridge(pCppEnv, pUnoEnv, bExportCpp2Uno);
// coverity[leaked_storage] - on purpose
return bExportCpp2Uno ? &bridge->aCpp2Uno : &bridge->aUno2Cpp;
}
void Bridge::acquire()
{
if (++nRef != 1)
return;
if (bExportCpp2Uno)
{
uno_Mapping * pMapping = &aCpp2Uno;
::uno_registerMapping(
&pMapping, freeMapping, &pCppEnv->aBase,
&pUnoEnv->aBase, nullptr );
}
else
{
uno_Mapping * pMapping = &aUno2Cpp;
::uno_registerMapping(
&pMapping, freeMapping, &pUnoEnv->aBase,
&pCppEnv->aBase, nullptr );
}
}
void Bridge::release()
{
if (! --nRef )
{
::uno_revokeMapping( bExportCpp2Uno ? &aCpp2Uno : &aUno2Cpp );
}
}
Bridge::Bridge(
uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
bool bExportCpp2Uno_)
: nRef( 1 )
, pCppEnv( pCppEnv_ )
, pUnoEnv( pUnoEnv_ )
, bExportCpp2Uno( bExportCpp2Uno_ )
{
aCpp2Uno.pBridge = this;
aCpp2Uno.acquire = acquireMapping;
aCpp2Uno.release = releaseMapping;
aCpp2Uno.mapInterface = cpp2unoMapping;
aUno2Cpp.pBridge = this;
aUno2Cpp.acquire = acquireMapping;
aUno2Cpp.release = releaseMapping;
aUno2Cpp.mapInterface = uno2cppMapping;
(*pCppEnv->aBase.acquire)( &pCppEnv->aBase );
(*pUnoEnv->aBase.acquire)( &pUnoEnv->aBase );
}
Bridge::~Bridge()
{
(*pUnoEnv->aBase.release)( &pUnoEnv->aBase );
(*pCppEnv->aBase.release)( &pCppEnv->aBase );
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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