9bfd742d8c
Change-Id: Ib008613fb06c82791c63d5b074a3e2ff1c3607a0 Reviewed-on: https://gerrit.libreoffice.org/35834 Tested-by: Jenkins <ci@libreoffice.org> Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
130 lines
4.5 KiB
C++
130 lines
4.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_TOOLS_LINK_HXX
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#define INCLUDED_TOOLS_LINK_HXX
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#include <sal/config.h>
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#include <sal/types.h>
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#define DECL_LINK(Member, ArgType, RetType) \
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static RetType LinkStub##Member(void *, ArgType); \
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RetType Member(ArgType)
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#define DECL_STATIC_LINK(Class, Member, ArgType, RetType) \
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static RetType LinkStub##Member(void *, ArgType); \
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static RetType Member(Class *, ArgType)
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#define DECL_DLLPRIVATE_LINK(Member, ArgType, RetType) \
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SAL_DLLPRIVATE static RetType LinkStub##Member(void *, ArgType); \
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SAL_DLLPRIVATE RetType Member(ArgType)
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#define DECL_DLLPRIVATE_STATIC_LINK(Class, Member, ArgType, RetType) \
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SAL_DLLPRIVATE static RetType LinkStub##Member(void *, ArgType); \
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SAL_DLLPRIVATE static RetType Member(Class *, ArgType)
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#define IMPL_LINK(Class, Member, ArgType, ArgName, RetType) \
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RetType Class::LinkStub##Member(void * instance, ArgType data) { \
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return static_cast<Class *>(instance)->Member(data); \
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} \
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RetType Class::Member(ArgType ArgName)
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#define IMPL_LINK_NOARG(Class, Member, ArgType, RetType) \
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RetType Class::LinkStub##Member(void * instance, ArgType data) { \
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return static_cast<Class *>(instance)->Member(data); \
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} \
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RetType Class::Member(SAL_UNUSED_PARAMETER ArgType)
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#define IMPL_STATIC_LINK( \
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Class, Member, ArgType, ArgName, RetType) \
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RetType Class::LinkStub##Member(void * instance, ArgType data) { \
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return Member(static_cast<Class *>(instance), data); \
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} \
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RetType Class::Member(SAL_UNUSED_PARAMETER Class *, ArgType ArgName)
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#define IMPL_STATIC_LINK_NOARG( \
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Class, Member, ArgType, RetType) \
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RetType Class::LinkStub##Member(void * instance, ArgType data) { \
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return Member(static_cast<Class *>(instance), data); \
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} \
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RetType Class::Member( \
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SAL_UNUSED_PARAMETER Class *, SAL_UNUSED_PARAMETER ArgType)
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#define LINK(Instance, Class, Member) ::tools::detail::makeLink( \
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::tools::detail::castTo<Class *>(Instance), &Class::LinkStub##Member)
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template<typename Arg, typename Ret>
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class SAL_WARN_UNUSED Link {
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public:
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typedef Ret Stub(void *, Arg);
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Link(): function_(nullptr), instance_(nullptr) {}
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Link(void * instance, Stub * function):
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function_(function), instance_(instance) {}
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Ret Call(Arg data) const
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{ return function_ == nullptr ? Ret() : (*function_)(instance_, data); }
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bool IsSet() const { return function_ != nullptr; }
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bool operator !() const { return !IsSet(); }
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bool operator <(Link const & other) const {
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sal_uIntPtr ptr1 = reinterpret_cast<sal_uIntPtr>(function_);
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sal_uIntPtr ptr2 = reinterpret_cast<sal_uIntPtr>(other.function_);
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if (ptr1 < ptr2)
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return true;
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else if (ptr1 > ptr2)
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return false;
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else
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return instance_ < other.instance_;
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};
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bool operator ==(Link const & other) const
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{ return function_ == other.function_ && instance_ == other.instance_; };
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void *GetInstance() const { return instance_; }
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private:
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Stub * function_;
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void * instance_;
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};
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// Class used to indicate that the Call() parameter is not in use:
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class LinkParamNone { LinkParamNone() = delete; };
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namespace tools { namespace detail {
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// Avoids loplugin:redundantcast in LINK macro, in the common case that Instance
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// is already of type Class * (instead of a derived type):
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template<typename To, typename From> To castTo(From from)
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{ return static_cast<To>(from); }
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template<typename Arg, typename Ret>
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Link<Arg, Ret> makeLink(void * instance, Ret (* function)(void *, Arg)) {
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return Link<Arg, Ret>(instance, function);
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}
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} }
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#endif
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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