Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 144 insertions, 0 deletions

diff --git a/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx
new file mode 100644
index 000000000..dad1ad8f7
--- /dev/null
+++ b/bridges/source/cpp_uno/shared/cppinterfaceproxy.cxx
@@ -0,0 +1,144 @@
+/* -*- 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 <utility>
+#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 aOId_)
+    : nRef( 1 )
+    , pBridge( pBridge_ )
+    , pUnoI( pUnoI_ )
+    , pTypeDescr( pTypeDescr_ )
+    , oid(std::move( aOId_ ))
+{
+    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: */