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diff --git a/pyuno/source/module/pyuno_impl.hxx b/pyuno/source/module/pyuno_impl.hxx
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+++ b/pyuno/source/module/pyuno_impl.hxx
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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 .
+ */
+#ifndef INCLUDED_PYUNO_SOURCE_MODULE_PYUNO_IMPL_HXX
+#define INCLUDED_PYUNO_SOURCE_MODULE_PYUNO_IMPL_HXX
+
+#if defined(_MSC_VER)
+// Workaround for some horrible hypot() mess
+#include <math.h>
+#endif
+
+#include <Python.h>
+
+//Python 3.0 and newer don't have these flags
+#ifndef Py_TPFLAGS_HAVE_ITER
+#  define Py_TPFLAGS_HAVE_ITER 0
+#endif
+#ifndef Py_TPFLAGS_HAVE_RICHCOMPARE
+#  define Py_TPFLAGS_HAVE_RICHCOMPARE 0
+#endif
+#ifndef Py_TPFLAGS_HAVE_SEQUENCE_IN
+#  define Py_TPFLAGS_HAVE_SEQUENCE_IN 0
+#endif
+
+#include <pyuno.hxx>
+
+#include <string_view>
+#include <unordered_map>
+#include <unordered_set>
+
+#include <com/sun/star/container/XIndexAccess.hpp>
+#include <com/sun/star/lang/XUnoTunnel.hpp>
+#include <com/sun/star/script/XInvocation.hpp>
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/weakref.hxx>
+
+#include <osl/module.hxx>
+
+namespace com::sun::star::beans { class XIntrospection; }
+namespace com::sun::star::container { class XEnumeration; }
+namespace com::sun::star::container { class XHierarchicalNameAccess; }
+namespace com::sun::star::lang { class XSingleServiceFactory; }
+namespace com::sun::star::reflection { class XIdlReflection; }
+namespace com::sun::star::script { class XInvocation2; }
+namespace com::sun::star::script { class XInvocationAdapterFactory2; }
+namespace com::sun::star::script { class XTypeConverter; }
+
+namespace pyuno
+{
+
+
+// Logging API - implementation can be found in pyuno_util
+
+struct RuntimeCargo;
+namespace LogLevel
+{
+// when you add a loglevel, extend the log function !
+const sal_Int32 NONE = 0;
+const sal_Int32 CALL = 1;
+const sal_Int32 ARGS = 2;
+}
+
+bool isLog( RuntimeCargo const *cargo, sal_Int32 loglevel );
+void log( RuntimeCargo *cargo, sal_Int32 level, std::u16string_view logString );
+void log( RuntimeCargo *cargo, sal_Int32 level, const char *str );
+void logCall( RuntimeCargo *cargo, const char *intro,
+              void * ptr, std::u16string_view aFunctionName,
+              const css::uno::Sequence< css::uno::Any > & args );
+void logReply( RuntimeCargo *cargo, const char *intro,
+              void * ptr, std::u16string_view aFunctionName,
+              const css::uno::Any &returnValue,
+              const css::uno::Sequence< css::uno::Any > & args );
+void logException( RuntimeCargo *cargo, const char *intro,
+                   void * ptr, std::u16string_view aFunctionName,
+                   const void * data, const css::uno::Type & type );
+const sal_Int32 VAL2STR_MODE_DEEP = 0;
+const sal_Int32 VAL2STR_MODE_SHALLOW = 1;
+OUString val2str( const void * pVal, typelib_TypeDescriptionReference * pTypeRef, sal_Int32 mode = VAL2STR_MODE_DEEP );
+
+
+typedef std::unordered_map
+<
+    PyRef,
+    css::uno::WeakReference< css::script::XInvocation >,
+    PyRef::Hash
+> PyRef2Adapter;
+
+
+typedef std::unordered_map
+<
+    OUString,
+    PyRef
+> ExceptionClassMap;
+
+typedef std::unordered_map
+<
+    OUString,
+    css::uno::Sequence< sal_Int16 >
+> MethodOutIndexMap;
+
+typedef std::unordered_set< PyRef , PyRef::Hash > ClassSet;
+
+int PyUNO_initType();
+int PyUNOStruct_initType();
+
+PyRef PyUNO_new (
+    const css::uno::Any & targetInterface,
+    const css::uno::Reference<css::lang::XSingleServiceFactory> & ssf );
+
+PyRef PyUNOStruct_new (
+    const css::uno::Any &targetInterface,
+    const  css::uno::Reference<css::lang::XSingleServiceFactory> &ssf );
+
+struct PyUNOInternals
+{
+    css::uno::Reference <css::script::XInvocation2> xInvocation;
+    css::uno::Any wrappedObject;
+};
+
+typedef struct
+{
+    PyObject_HEAD
+    PyUNOInternals* members;
+} PyUNO;
+
+PyObject* PyUNO_iterator_new (
+    const css::uno::Reference<css::container::XEnumeration>& xEnumeration);
+
+struct PyUNO_iterator_Internals
+{
+    css::uno::Reference <css::container::XEnumeration> xEnumeration;
+};
+
+typedef struct
+{
+        PyObject_HEAD
+        PyUNO_iterator_Internals* members;
+} PyUNO_iterator;
+
+PyObject* PyUNO_list_iterator_new (
+    const css::uno::Reference<css::container::XIndexAccess> &xIndexAccess);
+
+struct PyUNO_list_iterator_Internals
+{
+    css::uno::Reference <css::container::XIndexAccess> xIndexAccess;
+    int index;
+};
+
+typedef struct
+{
+        PyObject_HEAD
+        PyUNO_list_iterator_Internals* members;
+} PyUNO_list_iterator;
+
+PyRef ustring2PyUnicode( const OUString &source );
+PyRef ustring2PyString( std::u16string_view source );
+OUString pyString2ustring( PyObject *str );
+
+/// @throws css::reflection::InvocationTargetException
+/// @throws css::uno::RuntimeException
+void raiseInvocationTargetExceptionWhenNeeded( const Runtime &runtime );
+
+PyRef PyUNO_callable_new (
+    const css::uno::Reference<css::script::XInvocation2> &xInv,
+    const OUString &methodName,
+    ConversionMode mode = REJECT_UNO_ANY );
+
+PyObject* PyUNO_Type_new (const char *typeName , css::uno::TypeClass t , const Runtime &r );
+PyObject* PyUNO_Enum_new( const char *enumBase, const char *enumValue, const Runtime &r );
+PyObject* PyUNO_char_new (sal_Unicode c , const Runtime &r);
+PyObject *PyUNO_ByteSequence_new( const css::uno::Sequence< sal_Int8 > &, const Runtime &r );
+
+PyRef getTypeClass( const Runtime &);
+PyRef getEnumClass( const Runtime &);
+PyRef getCharClass( const Runtime &);
+PyRef getByteSequenceClass( const Runtime & );
+PyRef getPyUnoClass();
+PyRef getPyUnoStructClass();
+PyRef getClass( const OUString & name , const Runtime & runtime );
+PyRef getAnyClass( const Runtime &);
+PyObject *PyUNO_invoke( PyObject *object, const char *name , PyObject *args );
+
+/// @throws css::uno::RuntimeException
+css::uno::Any PyEnum2Enum( PyObject *obj );
+/// @throws css::uno::RuntimeException
+sal_Unicode PyChar2Unicode( PyObject *o );
+/// @throws css::uno::RuntimeException
+css::uno::Type PyType2Type( PyObject * o );
+
+void raisePyExceptionWithAny( const css::uno::Any &a );
+const char *typeClassToString( css::uno::TypeClass t );
+
+/// @throws css::uno::RuntimeException
+PyRef getObjectFromUnoModule( const Runtime &runtime, const char * object );
+
+bool isInterfaceClass( const Runtime &, PyObject *obj );
+bool isInstanceOfStructOrException( PyObject *obj);
+
+struct RuntimeCargo
+{
+    css::uno::Reference< css::lang::XSingleServiceFactory > xInvocation;
+    css::uno::Reference< css::script::XTypeConverter> xTypeConverter;
+    css::uno::Reference< css::uno::XComponentContext > xContext;
+    css::uno::Reference< css::reflection::XIdlReflection > xCoreReflection;
+    css::uno::Reference< css::container::XHierarchicalNameAccess > xTdMgr;
+    css::uno::Reference< css::script::XInvocationAdapterFactory2 > xAdapterFactory;
+    css::uno::Reference< css::beans::XIntrospection > xIntrospection;
+    PyRef dictUnoModule;
+    osl::Module testModule;
+    bool valid;
+    ExceptionClassMap exceptionMap;
+    ClassSet interfaceSet;
+    PyRef2Adapter mappedObjects;
+    FILE *logFile;
+    sal_Int32 logLevel;
+
+    PyRef const & getUnoModule();
+};
+
+struct stRuntimeImpl
+{
+    PyObject_HEAD
+    struct RuntimeCargo *cargo;
+public:
+    static void del( PyObject *self );
+
+    /// @throws css::uno::RuntimeException
+    static PyRef create(
+        const css::uno::Reference< css::uno::XComponentContext > & xContext );
+};
+
+
+class Adapter : public cppu::WeakImplHelper<
+    css::script::XInvocation, css::lang::XUnoTunnel >
+{
+    PyRef mWrappedObject;
+    PyInterpreterState *mInterpreter;  // interpreters don't seem to be refcounted !
+    css::uno::Sequence< css::uno::Type > mTypes;
+    MethodOutIndexMap m_methodOutIndexMap;
+
+private:
+    css::uno::Sequence< sal_Int16 > getOutIndexes( const OUString & functionName );
+
+public:
+public:
+    Adapter( const PyRef &obj,
+             const css::uno::Sequence< css::uno::Type > & types );
+
+    static css::uno::Sequence< sal_Int8 > getUnoTunnelId();
+    const PyRef& getWrappedObject() const { return mWrappedObject; }
+    const css::uno::Sequence< css::uno::Type >& getWrappedTypes() const { return mTypes; }
+    virtual ~Adapter() override;
+
+    // XInvocation
+    virtual css::uno::Reference< css::beans::XIntrospectionAccess >
+           SAL_CALL getIntrospection(  ) override;
+    virtual css::uno::Any SAL_CALL invoke(
+        const OUString& aFunctionName,
+        const css::uno::Sequence< css::uno::Any >& aParams,
+        css::uno::Sequence< sal_Int16 >& aOutParamIndex,
+        css::uno::Sequence< css::uno::Any >& aOutParam ) override;
+
+    virtual void SAL_CALL setValue(
+        const OUString& aPropertyName,
+        const css::uno::Any& aValue ) override;
+
+    virtual css::uno::Any SAL_CALL getValue( const OUString& aPropertyName ) override;
+    virtual sal_Bool SAL_CALL hasMethod( const OUString& aName ) override;
+    virtual sal_Bool SAL_CALL hasProperty( const OUString& aName ) override;
+
+    // XUnoTunnel
+    virtual sal_Int64 SAL_CALL getSomething(
+        const css::uno::Sequence< sal_Int8 >& aIdentifier ) override;
+};
+
+
+/** releases a refcount on the interpreter object and on another given python object.
+
+   The function can be called from any thread regardless of whether the global
+   interpreter lock is held.
+
+ */
+void decreaseRefCount( PyInterpreterState *interpreter, PyObject *object );
+
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */