pyuno.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 .
 */
 
#pragma once
 
#ifndef Py_PYTHON_H
#include <Python.h>
#endif // #ifdef Py_PYTHON_H
 
#include <com/sun/star/uno/Any.hxx>
 
namespace com::sun::star::uno { class XComponentContext; }
namespace com::sun::star::uno { template <typename > class Reference; }
 
#if defined LO_DLLIMPLEMENTATION_PYUNO
#define LO_DLLPUBLIC_PYUNO SAL_DLLPUBLIC_EXPORT
#else
#define LO_DLLPUBLIC_PYUNO SAL_DLLPUBLIC_IMPORT
#endif
 
extern "C" LO_DLLPUBLIC_PYUNO PyObject* PyInit_pyuno();
 
namespace pyuno
{
 
enum NotNull
{
    NOT_NULL
};
 
class PyRef
{
    PyObject *m;
public:
    PyRef () : m(nullptr) {}
    PyRef( PyObject * p ) : m( p ) { Py_XINCREF( m ); }
 
    PyRef( PyObject * p, __sal_NoAcquire ) : m( p ) {}
 
    PyRef( PyObject * p, __sal_NoAcquire, NotNull ) : m( p )
    {
        if (!m)
            throw std::bad_alloc();
    }
 
    PyRef(const PyRef &r) : m(r.get()) { Py_XINCREF(m); }
    PyRef(PyRef &&r) noexcept : m(r.get()) { r.scratch(); }
 
    ~PyRef() { Py_XDECREF( m ); }
 
    PyObject *get() const noexcept { return m; }
 
    PyObject * getAcquired() const
    {
        Py_XINCREF( m );
        return m;
    }
 
    PyRef& operator=(const PyRef& r)
    {
        PyObject *tmp = m;
        m = r.getAcquired();
        Py_XDECREF(tmp);
        return *this;
    }
 
    PyRef& operator=(PyRef&& r)
    {
        PyObject *tmp = m;
        m = r.get();
        r.scratch();
        Py_XDECREF(tmp);
        return *this;
    }
 
    bool operator == (  const PyRef & r ) const
    {
        return r.get() == m;
    }
 
    void scratch() noexcept
    {
        m = nullptr;
    }
 
    bool is() const
    {
        return m != nullptr;
    }
 
    struct Hash
    {
        sal_IntPtr operator () ( const PyRef &r) const { return reinterpret_cast<sal_IntPtr>( r.get() ); }
    };
};
 
//struct stRuntimeImpl;
typedef struct stRuntimeImpl RuntimeImpl;
 
enum ConversionMode { ACCEPT_UNO_ANY, REJECT_UNO_ANY };
 
 
class LO_DLLPUBLIC_PYUNO Runtime
{
    RuntimeImpl *impl;
 
    bool pyIterUnpack( PyObject *const, css::uno::Any & ) const;
public:
    ~Runtime( );
 
    Runtime();
 
    Runtime( const Runtime & );
    Runtime & operator = ( const Runtime & );
 
    static void initialize(
        const css::uno::Reference< css::uno::XComponentContext > & ctx );
 
    static bool isInitialized();
 
    PyRef any2PyObject (const css::uno::Any &source ) const;
 
    css::uno::Any pyObject2Any (
        const PyRef & source , enum ConversionMode mode = REJECT_UNO_ANY ) const;
 
    css::uno::Any extractUnoException(
        const PyRef & excType, const PyRef & excValue, const PyRef & excTraceback) const;
 
    RuntimeImpl *getImpl() const { return impl; }
};
 
 
class LO_DLLPUBLIC_PYUNO PyThreadAttach
{
    PyThreadState *tstate;
    bool m_isNewState;
    PyThreadAttach ( const PyThreadAttach & ) = delete;
    PyThreadAttach & operator = ( const PyThreadAttach & ) = delete;
public:
 
    PyThreadAttach( PyInterpreterState *interp);
 
 
    ~PyThreadAttach();
};
 
class PyThreadDetach
{
    PyThreadState *tstate;
    PyThreadDetach ( const PyThreadDetach & ) = delete;
    PyThreadDetach & operator = ( const PyThreadDetach & ) = delete;
 
public:
    PyThreadDetach();
    ~PyThreadDetach();
};
 
}
 
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