1 files changed, 119 insertions, 0 deletions
diff --git a/bridges/inc/bridge.hxx b/bridges/inc/bridge.hxx
new file mode 100644
index 000000000..5229c1d4a
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+++ b/bridges/inc/bridge.hxx
@@ -0,0 +1,119 @@
+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_BRIDGES_INC_BRIDGE_HXX
+#define INCLUDED_BRIDGES_INC_BRIDGE_HXX
+
+#include <sal/config.h>
+
+#include <atomic>
+#include <cstddef>
+
+#include <sal/types.h>
+#include <typelib/typedescription.h>
+#include <uno/environment.h>
+#include <uno/mapping.h>
+
+namespace bridges::cpp_uno::shared {
+
+// private:
+extern "C" void freeMapping(uno_Mapping *);
+
+// private:
+extern "C" void acquireMapping(uno_Mapping *);
+
+// private:
+extern "C" void releaseMapping(uno_Mapping *);
+
+// private:
+extern "C" void cpp2unoMapping(
+    uno_Mapping *, void **, void *, typelib_InterfaceTypeDescription *);
+
+// private:
+extern "C" void uno2cppMapping(
+    uno_Mapping *, void **, void *, typelib_InterfaceTypeDescription *);
+
+/**
+ * Holding environments and mappings.
+ */
+class Bridge {
+public:
+    // Interface for generic/component.cxx:
+
+    static uno_Mapping * createMapping(
+        uno_ExtEnvironment * pCppEnv, uno_ExtEnvironment * pUnoEnv,
+        bool bExportCpp2Uno);
+
+    // Interface for Cpp/UnoInterfaceProxy:
+
+    void acquire();
+    void release();
+
+    // Interface for individual CPP--UNO bridges:
+
+    uno_ExtEnvironment * getCppEnv() { return pCppEnv; }
+    uno_ExtEnvironment * getUnoEnv() { return pUnoEnv; }
+
+    uno_Mapping * getCpp2Uno() { return &aCpp2Uno; }
+    uno_Mapping * getUno2Cpp() { return &aUno2Cpp; }
+
+private:
+    Bridge(Bridge const &) = delete;
+    Bridge& operator =(const Bridge&) = delete;
+
+    Bridge(
+        uno_ExtEnvironment * pCppEnv_, uno_ExtEnvironment * pUnoEnv_,
+        bool bExportCpp2Uno_);
+
+    ~Bridge();
+
+    struct Mapping: public uno_Mapping {
+        Bridge * pBridge;
+    };
+
+    std::atomic<std::size_t> nRef;
+
+    uno_ExtEnvironment * pCppEnv;
+    uno_ExtEnvironment * pUnoEnv;
+
+    Mapping aCpp2Uno;
+    Mapping aUno2Cpp;
+
+    bool bExportCpp2Uno;
+
+    friend void freeMapping(uno_Mapping * pMapping);
+
+    friend void acquireMapping(uno_Mapping * pMapping);
+
+    friend void releaseMapping(uno_Mapping * pMapping);
+
+    friend void cpp2unoMapping(
+        uno_Mapping * pMapping, void ** ppUnoI, void * pCppI,
+        typelib_InterfaceTypeDescription * pTypeDescr);
+
+    friend void uno2cppMapping(
+        uno_Mapping * pMapping, void ** ppCppI, void * pUnoI,
+        typelib_InterfaceTypeDescription * pTypeDescr);
+};
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */