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diff --git a/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx
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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 <cppinterfaceproxy.hxx>
+
+#include <bridge.hxx>
+#include <vtablefactory.hxx>
+
+#include <com/sun/star/uno/XInterface.hpp>
+#include <typelib/typedescription.h>
+
+#include <cstddef>
+#include <memory>
+#include <new>
+
+namespace bridges::cpp_uno::shared {
+
+void freeCppInterfaceProxy(uno_ExtEnvironment * pEnv, void * pInterface)
+{
+ CppInterfaceProxy * pThis = CppInterfaceProxy::castInterfaceToProxy(
+ pInterface);
+ if (pEnv != pThis->pBridge->getCppEnv()) {
+ assert(false);
+ }
+
+ (*pThis->pBridge->getUnoEnv()->revokeInterface)(
+ pThis->pBridge->getUnoEnv(), pThis->pUnoI );
+ (*pThis->pUnoI->release)( pThis->pUnoI );
+ ::typelib_typedescription_release(
+ &pThis->pTypeDescr->aBase );
+ pThis->pBridge->release();
+
+#if OSL_DEBUG_LEVEL > 1
+ *(int *)pInterface = 0xdeadbabe;
+#endif
+ pThis->~CppInterfaceProxy();
+ delete[] reinterpret_cast< char * >(pThis);
+}
+
+com::sun::star::uno::XInterface * CppInterfaceProxy::create(
+ bridges::cpp_uno::shared::Bridge * pBridge, uno_Interface * pUnoI,
+ typelib_InterfaceTypeDescription * pTypeDescr, OUString const & rOId)
+{
+ typelib_typedescription_complete(
+ reinterpret_cast< typelib_TypeDescription ** >(&pTypeDescr));
+ static bridges::cpp_uno::shared::VtableFactory factory;
+ const bridges::cpp_uno::shared::VtableFactory::Vtables& rVtables(
+ factory.getVtables(pTypeDescr));
+ std::unique_ptr< char[] > pMemory(
+ new char[
+ sizeof (CppInterfaceProxy)
+ + (rVtables.count - 1) * sizeof (void **)]);
+ new(pMemory.get()) CppInterfaceProxy(pBridge, pUnoI, pTypeDescr, rOId);
+ CppInterfaceProxy * pProxy = reinterpret_cast< CppInterfaceProxy * >(
+ pMemory.release());
+ for (sal_Int32 i = 0; i < rVtables.count; ++i) {
+ pProxy->vtables[i] = VtableFactory::mapBlockToVtable(
+ rVtables.blocks[i].start);
+ }
+ return castProxyToInterface(pProxy);
+}
+
+void CppInterfaceProxy::acquireProxy()
+{
+ if (++nRef == 1)
+ {
+ // rebirth of proxy zombie
+ // register at cpp env
+ void * pThis = castProxyToInterface( this );
+ (*pBridge->getCppEnv()->registerProxyInterface)(
+ pBridge->getCppEnv(), &pThis, freeCppInterfaceProxy, oid.pData,
+ pTypeDescr );
+ assert(pThis == castProxyToInterface(this));
+ }
+}
+
+void CppInterfaceProxy::releaseProxy()
+{
+ if (! --nRef ) // last release
+ {
+ // revoke from cpp env
+ (*pBridge->getCppEnv()->revokeInterface)(
+ pBridge->getCppEnv(), castProxyToInterface( this ) );
+ }
+}
+
+CppInterfaceProxy::CppInterfaceProxy(
+ bridges::cpp_uno::shared::Bridge * pBridge_, uno_Interface * pUnoI_,
+ typelib_InterfaceTypeDescription * pTypeDescr_, OUString const & rOId_)
+ : nRef( 1 )
+ , pBridge( pBridge_ )
+ , pUnoI( pUnoI_ )
+ , pTypeDescr( pTypeDescr_ )
+ , oid( rOId_ )
+{
+ pBridge->acquire();
+ ::typelib_typedescription_acquire( &pTypeDescr->aBase );
+ (*pUnoI->acquire)( pUnoI );
+ (*pBridge->getUnoEnv()->registerInterface)(
+ pBridge->getUnoEnv(), reinterpret_cast< void ** >( &pUnoI ), oid.pData,
+ pTypeDescr );
+}
+
+CppInterfaceProxy::~CppInterfaceProxy()
+{}
+
+com::sun::star::uno::XInterface * CppInterfaceProxy::castProxyToInterface(
+ CppInterfaceProxy * pProxy)
+{
+ return reinterpret_cast< com::sun::star::uno::XInterface * >(
+ &pProxy->vtables);
+}
+
+CppInterfaceProxy * CppInterfaceProxy::castInterfaceToProxy(void * pInterface)
+{
+ // pInterface == &pProxy->vtables (this emulated offsetof is not truly
+ // portable):
+ char const * const base = reinterpret_cast< char const * >(16);
+ std::ptrdiff_t const offset = reinterpret_cast< char const * >(
+ &reinterpret_cast< CppInterfaceProxy const * >(base)->vtables) - base;
+ return reinterpret_cast< CppInterfaceProxy * >(
+ static_cast< char * >(pInterface) - offset);
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */