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