1 files changed, 105 insertions, 0 deletions
diff --git a/cppu/source/uno/IdentityMapping.cxx b/cppu/source/uno/IdentityMapping.cxx
new file mode 100644
index 000000000..32ec32c07
--- /dev/null
+++ b/cppu/source/uno/IdentityMapping.cxx
@@ -0,0 +1,105 @@
+/* -*- 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 "IdentityMapping.hxx"
+
+#include <typelib/typedescription.h>
+#include <uno/mapping.h>
+#include <uno/environment.hxx>
+#include <utility>
+
+#include <osl/interlck.h>
+
+
+using namespace ::com::sun::star;
+
+namespace {
+
+struct IdentityMapping : public uno_Mapping
+{
+    sal_Int32        m_nRef;
+    uno::Environment m_env;
+
+    explicit IdentityMapping(uno::Environment aEnv);
+};
+
+}
+
+extern "C"
+{
+
+static void s_free(uno_Mapping * pMapping)
+{
+    delete static_cast<IdentityMapping *>(pMapping);
+}
+
+static void s_acquire(uno_Mapping * pMapping)
+{
+    static OUString s_purpose;
+
+    if (1 == osl_atomic_increment(&static_cast<IdentityMapping *>(pMapping)->m_nRef))
+    {
+        uno_registerMapping(
+            &pMapping,
+            s_free,
+            static_cast<IdentityMapping *>(pMapping)->m_env.get(),
+            static_cast<IdentityMapping *>(pMapping)->m_env.get(),
+            s_purpose.pData);
+    }
+}
+
+static void s_release(uno_Mapping * pMapping)
+{
+    if (!osl_atomic_decrement(&static_cast<IdentityMapping *>(pMapping )->m_nRef))
+        uno_revokeMapping(pMapping);
+}
+
+static void s_mapInterface(uno_Mapping                       * pMapping,
+                                    void                             ** ppOut,
+                                    void                              * pInterface,
+                                    SAL_UNUSED_PARAMETER typelib_InterfaceTypeDescription * /*pInterfaceTypeDescr*/)
+{
+    *ppOut = pInterface;
+
+    if (pInterface)
+    {
+        IdentityMapping * that = static_cast<IdentityMapping *>(pMapping);
+
+        (that->m_env.get()->pExtEnv->acquireInterface)(that->m_env.get()->pExtEnv, pInterface);
+    }
+}
+}
+
+
+IdentityMapping::IdentityMapping(uno::Environment aEnv)
+    : m_nRef(0),
+      m_env(std::move(aEnv))
+{
+    uno_Mapping::acquire        = s_acquire;
+    uno_Mapping::release        = s_release;
+    uno_Mapping::mapInterface   = s_mapInterface;
+}
+
+
+uno_Mapping * createIdentityMapping(uno::Environment const & rEnv)
+{
+    return new IdentityMapping(rEnv);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */