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634 lines
36 KiB
C++
634 lines
36 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Copyright (C) 2013 Olivier Goffart <ogoffart@woboq.com>
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef Q_QDOC
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#ifndef QOBJECTDEFS_H
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#error Do not include qobjectdefs_impl.h directly
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#include <QtCore/qnamespace.h>
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#endif
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#if 0
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#pragma qt_sync_skip_header_check
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#pragma qt_sync_stop_processing
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#endif
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QT_BEGIN_NAMESPACE
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namespace QtPrivate {
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template <typename T> struct RemoveRef { typedef T Type; };
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template <typename T> struct RemoveRef<T&> { typedef T Type; };
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template <typename T> struct RemoveConstRef { typedef T Type; };
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template <typename T> struct RemoveConstRef<const T&> { typedef T Type; };
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/*
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The following List classes are used to help to handle the list of arguments.
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It follow the same principles as the lisp lists.
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List_Left<L,N> take a list and a number as a parameter and returns (via the Value typedef,
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the list composed of the first N element of the list
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*/
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#ifndef Q_COMPILER_VARIADIC_TEMPLATES
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template <typename Head, typename Tail> struct List { typedef Head Car; typedef Tail Cdr; };
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template <typename L, int N> struct List_Left { typedef List<typename L::Car, typename List_Left<typename L::Cdr, N - 1>::Value > Value; };
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template <typename L> struct List_Left<L,0> { typedef void Value; };
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#else
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// With variadic template, lists are represented using a variadic template argument instead of the lisp way
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template <typename...> struct List {};
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template <typename Head, typename... Tail> struct List<Head, Tail...> { typedef Head Car; typedef List<Tail...> Cdr; };
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template <typename, typename> struct List_Append;
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template <typename... L1, typename...L2> struct List_Append<List<L1...>, List<L2...>> { typedef List<L1..., L2...> Value; };
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template <typename L, int N> struct List_Left {
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typedef typename List_Append<List<typename L::Car>,typename List_Left<typename L::Cdr, N - 1>::Value>::Value Value;
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};
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template <typename L> struct List_Left<L, 0> { typedef List<> Value; };
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#endif
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// List_Select<L,N> returns (via typedef Value) the Nth element of the list L
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template <typename L, int N> struct List_Select { typedef typename List_Select<typename L::Cdr, N - 1>::Value Value; };
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template <typename L> struct List_Select<L,0> { typedef typename L::Car Value; };
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/*
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trick to set the return value of a slot that works even if the signal or the slot returns void
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to be used like function(), ApplyReturnValue<ReturnType>(&return_value)
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if function() returns a value, the operator,(T, ApplyReturnValue<ReturnType>) is called, but if it
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returns void, the builtin one is used without an error.
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*/
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template <typename T>
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struct ApplyReturnValue {
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void *data;
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explicit ApplyReturnValue(void *data_) : data(data_) {}
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};
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template<typename T, typename U>
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void operator,(const T &value, const ApplyReturnValue<U> &container) {
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if (container.data)
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*reinterpret_cast<U*>(container.data) = value;
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}
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#ifdef Q_COMPILER_RVALUE_REFS
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template<typename T, typename U>
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void operator,(T &&value, const ApplyReturnValue<U> &container) {
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if (container.data)
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*reinterpret_cast<U*>(container.data) = value;
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}
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#endif
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template<typename T>
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void operator,(T, const ApplyReturnValue<void> &) {}
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/*
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The FunctionPointer<Func> struct is a type trait for function pointer.
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- ArgumentCount is the number of argument, or -1 if it is unknown
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- the Object typedef is the Object of a pointer to member function
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- the Arguments typedef is the list of argument (in a QtPrivate::List)
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- the Function typedef is an alias to the template parameter Func
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- the call<Args, R>(f,o,args) method is used to call that slot
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Args is the list of argument of the signal
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R is the return type of the signal
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f is the function pointer
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o is the receiver object
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and args is the array of pointer to arguments, as used in qt_metacall
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The Functor<Func,N> struct is the helper to call a functor of N argument.
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its call function is the same as the FunctionPointer::call function.
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*/
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#ifndef Q_COMPILER_VARIADIC_TEMPLATES
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template<typename Func> struct FunctionPointer { enum {ArgumentCount = -1, IsPointerToMemberFunction = false}; };
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//Pointers to member functions
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template<class Obj, typename Ret> struct FunctionPointer<Ret (Obj::*) ()>
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{
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typedef Obj Object;
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typedef void Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) ();
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enum {ArgumentCount = 0, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) { (o->*f)(), ApplyReturnValue<R>(arg[0]); }
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};
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template<class Obj, typename Ret, typename Arg1> struct FunctionPointer<Ret (Obj::*) (Arg1)>
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{
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typedef Obj Object;
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typedef List<Arg1, void> Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1);
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enum {ArgumentCount = 1, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)((*reinterpret_cast<typename RemoveRef<typename Args::Car>::Type *>(arg[1]))), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2)>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, void> > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2);
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enum {ArgumentCount = 2, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3)>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, void> > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3);
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enum {ArgumentCount = 3, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3, Arg4)>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, void> > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3, Arg4);
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enum {ArgumentCount = 4, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3, Arg4, Arg5)>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, List<Arg5, void> > > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3, Arg4, Arg5);
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enum {ArgumentCount = 5, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5, typename Arg6>
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struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6)>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, List<Arg5, List<Arg6, void> > > > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6);
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enum {ArgumentCount = 6, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 5>::Value>::Type *>(arg[6])), ApplyReturnValue<R>(arg[0]);
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}
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};
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//Pointers to const member functions
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template<class Obj, typename Ret> struct FunctionPointer<Ret (Obj::*) () const>
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{
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typedef Obj Object;
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typedef void Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) () const;
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enum {ArgumentCount = 0, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) { (o->*f)(), ApplyReturnValue<R>(arg[0]); }
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};
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template<class Obj, typename Ret, typename Arg1> struct FunctionPointer<Ret (Obj::*) (Arg1) const>
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{
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typedef Obj Object;
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typedef List<Arg1, void> Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1) const;
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enum {ArgumentCount = 1, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)((*reinterpret_cast<typename RemoveRef<typename Args::Car>::Type *>(arg[1]))), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2) const>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, void> > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2) const;
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enum {ArgumentCount = 2, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3) const>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, void> > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3) const;
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enum {ArgumentCount = 3, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3, Arg4) const>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, void> > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3, Arg4) const;
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enum {ArgumentCount = 4, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5> struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3, Arg4, Arg5) const>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, List<Arg5, void> > > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3, Arg4, Arg5) const;
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enum {ArgumentCount = 5, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<class Obj, typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5, typename Arg6>
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struct FunctionPointer<Ret (Obj::*) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6) const>
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{
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typedef Obj Object;
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typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, List<Arg5, List<Arg6, void> > > > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (Obj::*Function) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6) const;
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enum {ArgumentCount = 6, IsPointerToMemberFunction = true};
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template <typename Args, typename R>
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static void call(Function f, Obj *o, void **arg) {
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(o->*f)( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 5>::Value>::Type *>(arg[6])), ApplyReturnValue<R>(arg[0]);
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}
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};
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//Static functions
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template<typename Ret> struct FunctionPointer<Ret (*) ()>
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{
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typedef void Arguments;
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typedef Ret (*Function) ();
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typedef Ret ReturnType;
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enum {ArgumentCount = 0, IsPointerToMemberFunction = false};
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template <typename Args, typename R>
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static void call(Function f, void *, void **arg) { f(), ApplyReturnValue<R>(arg[0]); }
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};
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template<typename Ret, typename Arg1> struct FunctionPointer<Ret (*) (Arg1)>
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{
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typedef List<Arg1, void> Arguments;
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typedef Ret ReturnType;
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typedef Ret (*Function) (Arg1);
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enum {ArgumentCount = 1, IsPointerToMemberFunction = false};
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template <typename Args, typename R>
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static void call(Function f, void *, void **arg)
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{ f(*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1])), ApplyReturnValue<R>(arg[0]); }
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};
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template<typename Ret, typename Arg1, typename Arg2> struct FunctionPointer<Ret (*) (Arg1, Arg2)>
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{
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typedef List<Arg1, List<Arg2, void> > Arguments;
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typedef Ret ReturnType;
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typedef Ret (*Function) (Arg1, Arg2);
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enum {ArgumentCount = 2, IsPointerToMemberFunction = false};
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template <typename Args, typename R>
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static void call(Function f, void *, void **arg) {
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f(*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2])), ApplyReturnValue<R>(arg[0]); }
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};
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template<typename Ret, typename Arg1, typename Arg2, typename Arg3> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3)>
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{
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typedef List<Arg1, List<Arg2, List<Arg3, void> > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (*Function) (Arg1, Arg2, Arg3);
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enum {ArgumentCount = 3, IsPointerToMemberFunction = false};
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template <typename Args, typename R>
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static void call(Function f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3, Arg4)>
|
|
{
|
|
typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, void> > > > Arguments;
|
|
typedef Ret ReturnType;
|
|
typedef Ret (*Function) (Arg1, Arg2, Arg3, Arg4);
|
|
enum {ArgumentCount = 4, IsPointerToMemberFunction = false};
|
|
template <typename Args, typename R>
|
|
static void call(Function f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3, Arg4, Arg5)>
|
|
{
|
|
typedef List<Arg1, List<Arg2, List<Arg3,
|
|
List<Arg4, List<Arg5, void > > > > > Arguments;
|
|
typedef Ret ReturnType;
|
|
typedef Ret (*Function) (Arg1, Arg2, Arg3, Arg4, Arg5);
|
|
enum {ArgumentCount = 5, IsPointerToMemberFunction = false};
|
|
template <typename Args, typename R>
|
|
static void call(Function f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5, typename Arg6> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6)>
|
|
{
|
|
typedef List<Arg1, List<Arg2, List<Arg3, List<Arg4, List<Arg5, List<Arg6, void> > > > > > Arguments;
|
|
typedef Ret ReturnType;
|
|
typedef Ret (*Function) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6);
|
|
enum {ArgumentCount = 6, IsPointerToMemberFunction = false};
|
|
template <typename Args, typename R>
|
|
static void call(Function f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 5>::Value>::Type *>(arg[6])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
|
|
//Functors
|
|
template<typename F, int N> struct Functor;
|
|
template<typename Function> struct Functor<Function, 0>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) { f(), ApplyReturnValue<R>(arg[0]); }
|
|
};
|
|
template<typename Function> struct Functor<Function, 1>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
f(*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Function> struct Functor<Function, 2>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Function> struct Functor<Function, 3>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Function> struct Functor<Function, 4>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Function> struct Functor<Function, 5>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template<typename Function> struct Functor<Function, 6>
|
|
{
|
|
template <typename Args, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
f( *reinterpret_cast<typename RemoveRef<typename List_Select<Args, 0>::Value>::Type *>(arg[1]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 1>::Value>::Type *>(arg[2]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[3]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 3>::Value>::Type *>(arg[4]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 4>::Value>::Type *>(arg[5]),
|
|
*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 5>::Value>::Type *>(arg[6])), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
#else
|
|
template <int...> struct IndexesList {};
|
|
template <typename IndexList, int Right> struct IndexesAppend;
|
|
template <int... Left, int Right> struct IndexesAppend<IndexesList<Left...>, Right>
|
|
{ typedef IndexesList<Left..., Right> Value; };
|
|
template <int N> struct Indexes
|
|
{ typedef typename IndexesAppend<typename Indexes<N - 1>::Value, N - 1>::Value Value; };
|
|
template <> struct Indexes<0> { typedef IndexesList<> Value; };
|
|
template<typename Func> struct FunctionPointer { enum {ArgumentCount = -1, IsPointerToMemberFunction = false}; };
|
|
|
|
template <typename, typename, typename, typename> struct FunctorCall;
|
|
template <int... II, typename... SignalArgs, typename R, typename Function>
|
|
struct FunctorCall<IndexesList<II...>, List<SignalArgs...>, R, Function> {
|
|
static void call(Function &f, void **arg) {
|
|
f((*reinterpret_cast<typename RemoveRef<SignalArgs>::Type *>(arg[II+1]))...), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template <int... II, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
|
|
struct FunctorCall<IndexesList<II...>, List<SignalArgs...>, R, SlotRet (Obj::*)(SlotArgs...)> {
|
|
static void call(SlotRet (Obj::*f)(SlotArgs...), Obj *o, void **arg) {
|
|
(o->*f)((*reinterpret_cast<typename RemoveRef<SignalArgs>::Type *>(arg[II+1]))...), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
template <int... II, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
|
|
struct FunctorCall<IndexesList<II...>, List<SignalArgs...>, R, SlotRet (Obj::*)(SlotArgs...) const> {
|
|
static void call(SlotRet (Obj::*f)(SlotArgs...) const, Obj *o, void **arg) {
|
|
(o->*f)((*reinterpret_cast<typename RemoveRef<SignalArgs>::Type *>(arg[II+1]))...), ApplyReturnValue<R>(arg[0]);
|
|
}
|
|
};
|
|
|
|
template<class Obj, typename Ret, typename... Args> struct FunctionPointer<Ret (Obj::*) (Args...)>
|
|
{
|
|
typedef Obj Object;
|
|
typedef List<Args...> Arguments;
|
|
typedef Ret ReturnType;
|
|
typedef Ret (Obj::*Function) (Args...);
|
|
enum {ArgumentCount = sizeof...(Args), IsPointerToMemberFunction = true};
|
|
template <typename SignalArgs, typename R>
|
|
static void call(Function f, Obj *o, void **arg) {
|
|
FunctorCall<typename Indexes<ArgumentCount>::Value, SignalArgs, R, Function>::call(f, o, arg);
|
|
}
|
|
};
|
|
template<class Obj, typename Ret, typename... Args> struct FunctionPointer<Ret (Obj::*) (Args...) const>
|
|
{
|
|
typedef Obj Object;
|
|
typedef List<Args...> Arguments;
|
|
typedef Ret ReturnType;
|
|
typedef Ret (Obj::*Function) (Args...) const;
|
|
enum {ArgumentCount = sizeof...(Args), IsPointerToMemberFunction = true};
|
|
template <typename SignalArgs, typename R>
|
|
static void call(Function f, Obj *o, void **arg) {
|
|
FunctorCall<typename Indexes<ArgumentCount>::Value, SignalArgs, R, Function>::call(f, o, arg);
|
|
}
|
|
};
|
|
|
|
template<typename Ret, typename... Args> struct FunctionPointer<Ret (*) (Args...)>
|
|
{
|
|
typedef List<Args...> Arguments;
|
|
typedef Ret ReturnType;
|
|
typedef Ret (*Function) (Args...);
|
|
enum {ArgumentCount = sizeof...(Args), IsPointerToMemberFunction = false};
|
|
template <typename SignalArgs, typename R>
|
|
static void call(Function f, void *, void **arg) {
|
|
FunctorCall<typename Indexes<ArgumentCount>::Value, SignalArgs, R, Function>::call(f, arg);
|
|
}
|
|
};
|
|
|
|
template<typename Function, int N> struct Functor
|
|
{
|
|
template <typename SignalArgs, typename R>
|
|
static void call(Function &f, void *, void **arg) {
|
|
FunctorCall<typename Indexes<N>::Value, SignalArgs, R, Function>::call(f, arg);
|
|
}
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
Logic that check if the arguments of the slot matches the argument of the signal.
|
|
To be used like this:
|
|
Q_STATIC_ASSERT(CheckCompatibleArguments<FunctionPointer<Signal>::Arguments, FunctionPointer<Slot>::Arguments>::value)
|
|
*/
|
|
template<typename A1, typename A2> struct AreArgumentsCompatible {
|
|
static int test(const typename RemoveRef<A2>::Type&);
|
|
static char test(...);
|
|
static const typename RemoveRef<A1>::Type &dummy();
|
|
enum { value = sizeof(test(dummy())) == sizeof(int) };
|
|
};
|
|
template<typename A1, typename A2> struct AreArgumentsCompatible<A1, A2&> { enum { value = false }; };
|
|
template<typename A> struct AreArgumentsCompatible<A&, A&> { enum { value = true }; };
|
|
// void as a return value
|
|
template<typename A> struct AreArgumentsCompatible<void, A> { enum { value = true }; };
|
|
template<typename A> struct AreArgumentsCompatible<A, void> { enum { value = true }; };
|
|
template<> struct AreArgumentsCompatible<void, void> { enum { value = true }; };
|
|
|
|
#ifndef Q_COMPILER_VARIADIC_TEMPLATES
|
|
template <typename List1, typename List2> struct CheckCompatibleArguments { enum { value = false }; };
|
|
template <> struct CheckCompatibleArguments<void, void> { enum { value = true }; };
|
|
template <typename List1> struct CheckCompatibleArguments<List1, void> { enum { value = true }; };
|
|
template <typename Arg1, typename Arg2, typename Tail1, typename Tail2> struct CheckCompatibleArguments<List<Arg1, Tail1>, List<Arg2, Tail2> >
|
|
{
|
|
enum { value = AreArgumentsCompatible<typename RemoveConstRef<Arg1>::Type, typename RemoveConstRef<Arg2>::Type>::value
|
|
&& CheckCompatibleArguments<Tail1, Tail2>::value };
|
|
};
|
|
#else
|
|
template <typename List1, typename List2> struct CheckCompatibleArguments { enum { value = false }; };
|
|
template <> struct CheckCompatibleArguments<List<>, List<>> { enum { value = true }; };
|
|
template <typename List1> struct CheckCompatibleArguments<List1, List<>> { enum { value = true }; };
|
|
template <typename Arg1, typename Arg2, typename... Tail1, typename... Tail2>
|
|
struct CheckCompatibleArguments<List<Arg1, Tail1...>, List<Arg2, Tail2...>>
|
|
{
|
|
enum { value = AreArgumentsCompatible<typename RemoveConstRef<Arg1>::Type, typename RemoveConstRef<Arg2>::Type>::value
|
|
&& CheckCompatibleArguments<List<Tail1...>, List<Tail2...>>::value };
|
|
};
|
|
#endif
|
|
|
|
#if defined(Q_COMPILER_DECLTYPE) && defined(Q_COMPILER_VARIADIC_TEMPLATES)
|
|
/*
|
|
Find the maximum number of arguments a functor object can take and be still compatible with
|
|
the arguments from the signal.
|
|
Value is the number of arguments, or -1 if nothing matches.
|
|
*/
|
|
template <typename Functor, typename ArgList> struct ComputeFunctorArgumentCount;
|
|
|
|
template <typename Functor, typename ArgList, bool Done> struct ComputeFunctorArgumentCountHelper
|
|
{ enum { Value = -1 }; };
|
|
template <typename Functor, typename First, typename... ArgList>
|
|
struct ComputeFunctorArgumentCountHelper<Functor, List<First, ArgList...>, false>
|
|
: ComputeFunctorArgumentCount<Functor,
|
|
typename List_Left<List<First, ArgList...>, sizeof...(ArgList)>::Value> {};
|
|
|
|
template <typename Functor, typename... ArgList> struct ComputeFunctorArgumentCount<Functor, List<ArgList...>>
|
|
{
|
|
template <typename D> static D dummy();
|
|
template <typename F> static auto test(F f) -> decltype(((f.operator()((dummy<ArgList>())...)), int()));
|
|
static char test(...);
|
|
enum {
|
|
Ok = sizeof(test(dummy<Functor>())) == sizeof(int),
|
|
Value = Ok ? int(sizeof...(ArgList)) : int(ComputeFunctorArgumentCountHelper<Functor, List<ArgList...>, Ok>::Value)
|
|
};
|
|
};
|
|
|
|
/* get the return type of a functor, given the signal argument list */
|
|
template <typename Functor, typename ArgList> struct FunctorReturnType;
|
|
template <typename Functor, typename ... ArgList> struct FunctorReturnType<Functor, List<ArgList...>> {
|
|
template <typename D> static D dummy();
|
|
typedef decltype(dummy<Functor>().operator()((dummy<ArgList>())...)) Value;
|
|
};
|
|
#endif
|
|
|
|
}
|
|
|
|
QT_END_NAMESPACE
|
|
|
|
#endif
|