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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_CPPUHELPER_IMPLBASE_HXX
#define INCLUDED_CPPUHELPER_IMPLBASE_HXX
#include "sal/config.h"
#include <cstddef>
#include <utility>
#include "com/sun/star/lang/XTypeProvider.hpp"
#include "com/sun/star/uno/Any.h"
#include "com/sun/star/uno/Sequence.hxx"
#include "com/sun/star/uno/Type.h"
#include "cppuhelper/implbase_ex.hxx"
#include "cppuhelper/weak.hxx"
#include "rtl/instance.hxx"
#include "sal/types.h"
#if defined LIBO_INTERNAL_ONLY
// A replacement for ImplHelperN has deliberately been left out, as ImplHelperN
// is unlikely ever be a better choice than WeakImplHelper, so all their
// existing uses are probably confused and should use WeakImplHelper instead.
//
// Replacements for WeakAggImplHelperN and AggImplInheritanceHelperN have
// deliberately been left out, as the underlying aggregation mechanism is known
// broken in general and should not be used.
namespace cppu {
/// @cond INTERNAL
namespace detail {
template<std::size_t N> struct class_dataN {
sal_Int16 m_nTypes;
sal_Bool m_storedTypeRefs;
sal_Bool m_storedId;
sal_Int8 m_id[16];
type_entry m_typeEntries[N + 1];
};
template<typename Impl, typename... Ifc> struct ImplClassData {
class_data * operator ()() {
static class_dataN<sizeof... (Ifc)> s_cd = {
sizeof... (Ifc) + 1, false, false, {},
{
{ { Ifc::static_type },
(reinterpret_cast<sal_IntPtr>(
static_cast<Ifc *>(reinterpret_cast<Impl *>(16)))
- 16)
}...,
CPPUHELPER_DETAIL_TYPEENTRY(css::lang::XTypeProvider)
}
};
return reinterpret_cast<class_data *>(&s_cd);
}
};
}
/// @endcond
/** Implementation helper implementing interfaces
css::uno::XInterface, css::lang::XTypeProvider, and
css::uno::XWeak (through cppu::OWeakObject).
@derive
Inherit from this class giving your interface(s) to be implemented as
template argument(s).
*/
template<typename... Ifc>
class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE WeakImplHelper:
public OWeakObject, public css::lang::XTypeProvider, public Ifc...
{
struct cd:
rtl::StaticAggregate<
class_data, detail::ImplClassData<WeakImplHelper, Ifc...>>
{};
protected:
WeakImplHelper() {}
virtual ~WeakImplHelper() override {}
public:
WeakImplHelper(WeakImplHelper const &) = default;
WeakImplHelper(WeakImplHelper &&) = default;
WeakImplHelper & operator =(WeakImplHelper const &) = default;
WeakImplHelper & operator =(WeakImplHelper &&) = default;
css::uno::Any SAL_CALL queryInterface(css::uno::Type const & aType) override
{ return WeakImplHelper_query(aType, cd::get(), this, this); }
void SAL_CALL acquire() SAL_NOEXCEPT override { OWeakObject::acquire(); }
void SAL_CALL release() SAL_NOEXCEPT override { OWeakObject::release(); }
css::uno::Sequence<css::uno::Type> SAL_CALL getTypes() override
{ return WeakImplHelper_getTypes(cd::get()); }
css::uno::Sequence<sal_Int8> SAL_CALL getImplementationId() override
{ return css::uno::Sequence<sal_Int8>(); }
};
/** Implementation helper implementing interfaces
css::uno::XInterface and css::lang::XTypeProvider
inheriting from a BaseClass.
All acquire() and release() calls are delegated to the BaseClass. Upon
queryInterface(), if a demanded interface is not supported by this class
directly, the request is delegated to the BaseClass.
@attention
The BaseClass has to be complete in the sense that
css::uno::XInterface and css::lang::XTypeProvider are
implemented properly.
@derive
Inherit from this class giving your additional interface(s) to be
implemented as template argument(s).
*/
template<typename BaseClass, typename... Ifc>
class SAL_NO_VTABLE SAL_DLLPUBLIC_TEMPLATE ImplInheritanceHelper:
public BaseClass, public Ifc...
{
struct cd:
rtl::StaticAggregate<
class_data, detail::ImplClassData<ImplInheritanceHelper, Ifc...>>
{};
protected:
template<typename... Arg> ImplInheritanceHelper(Arg &&... arg):
BaseClass(std::forward<Arg>(arg)...)
{}
virtual ~ImplInheritanceHelper() {}
public:
ImplInheritanceHelper(ImplInheritanceHelper const &) = default;
ImplInheritanceHelper(ImplInheritanceHelper &&) = default;
ImplInheritanceHelper & operator =(ImplInheritanceHelper const &) = default;
ImplInheritanceHelper & operator =(ImplInheritanceHelper &&) = default;
css::uno::Any SAL_CALL queryInterface(css::uno::Type const & aType) override
{
css::uno::Any ret(ImplHelper_queryNoXInterface(aType, cd::get(), this));
return ret.hasValue() ? ret : BaseClass::queryInterface(aType);
}
void SAL_CALL acquire() SAL_NOEXCEPT override { BaseClass::acquire(); }
void SAL_CALL release() SAL_NOEXCEPT override { BaseClass::release(); }
css::uno::Sequence<css::uno::Type> SAL_CALL getTypes() override
{ return ImplInhHelper_getTypes(cd::get(), BaseClass::getTypes()); }
css::uno::Sequence<sal_Int8> SAL_CALL getImplementationId() override
{ return css::uno::Sequence<sal_Int8>(); }
};
}
#endif
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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