Split qobject_impl.h into qobjectdefs_impl.h
This is done to make QtPrivate::FunctionPointer available to the QMetaMethod declaration in qmetaobject.h (which already included qobjectdefs.h, since that's where QMetaObject is declared), so that the new template-based QMetaMethod::fromSignal() function may be implemented. The logic for statically generating the array of qMetaTypeId (used by the template-based QObject::connect()) remains in qobject_impl.h, since it's not needed for QMetaMethod::fromSignal(). Moreover, moving that code would introduce a circular dependency, since qmetatype.h as of commit 194674044693d6b101c3dc2f4784718540d343a4 now includes qobjectdefs.h. Change-Id: I36c35041e0c6661c3cf523684177a0b6c19e2d35 Reviewed-by: Olivier Goffart <ogoffart@woboq.com> Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
This commit is contained in:
Kent Hansen
Qt by Nokia
parent
28c79d8c0b
commit
7b118c6456
@ -14,6 +14,7 @@ HEADERS += \
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kernel/qobject.h \
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kernel/qobject_impl.h \
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kernel/qobjectdefs.h \
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kernel/qobjectdefs_impl.h \
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kernel/qsignalmapper.h \
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kernel/qsocketnotifier.h \
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kernel/qtimer.h \
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@ -51,431 +51,6 @@ 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 parametter 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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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 parametter 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}; };
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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};
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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};
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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};
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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};
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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};
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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};
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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};
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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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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};
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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};
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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};
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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};
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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]),
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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<typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3, Arg4)>
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{
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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 (*Function) (Arg1, Arg2, Arg3, Arg4);
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enum {ArgumentCount = 4};
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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]),
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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<typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3, Arg4, Arg5)>
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{
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typedef List<Arg1, List<Arg2, List<Arg3,
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List<Arg4, List<Arg5, void > > > > > Arguments;
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typedef Ret ReturnType;
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typedef Ret (*Function) (Arg1, Arg2, Arg3, Arg4, Arg5);
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enum {ArgumentCount = 5};
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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]),
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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<typename Ret, typename Arg1, typename Arg2, typename Arg3, typename Arg4, typename Arg5, typename Arg6> struct FunctionPointer<Ret (*) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6)>
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{
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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 (*Function) (Arg1, Arg2, Arg3, Arg4, Arg5, Arg6);
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enum {ArgumentCount = 6};
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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]),
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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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template<typename F, int N> struct Functor;
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template<typename Function> struct Functor<Function, 0>
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{
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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 Function> struct Functor<Function, 1>
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{
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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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};
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template<typename Function> struct Functor<Function, 2>
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{
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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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};
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template<typename Function> struct Functor<Function, 3>
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{
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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]),
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*reinterpret_cast<typename RemoveRef<typename List_Select<Args, 2>::Value>::Type *>(arg[4])), ApplyReturnValue<R>(arg[0]);
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}
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};
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template<typename Function> struct Functor<Function, 4>
|
||||
{
|
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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]),
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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<typename Function> struct Functor<Function, 5>
|
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{
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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]),
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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<typename Function> struct Functor<Function, 6>
|
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{
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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]),
|
||||
*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}; };
|
||||
|
||||
template <typename, typename, typename, typename> struct FunctorCall;
|
||||
template <int... I, typename... SignalArgs, typename R, typename Function>
|
||||
struct FunctorCall<IndexesList<I...>, List<SignalArgs...>, R, Function> {
|
||||
static void call(Function f, void **arg) {
|
||||
f((*reinterpret_cast<typename RemoveRef<SignalArgs>::Type *>(arg[I+1]))...), ApplyReturnValue<R>(arg[0]);
|
||||
}
|
||||
};
|
||||
template <int... I, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
|
||||
struct FunctorCall<IndexesList<I...>, 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[I+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)};
|
||||
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)};
|
||||
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(A2);
|
||||
static char test(...);
|
||||
static A1 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
|
||||
|
||||
/*
|
||||
Logic to statically generate the array of qMetaTypeId
|
||||
ConnectionTypes<FunctionPointer<Signal>::Arguments>::types() returns an array
|
||||
|
||||
@ -44,6 +44,8 @@
|
||||
|
||||
#include <QtCore/qnamespace.h>
|
||||
|
||||
#include <QtCore/qobjectdefs_impl.h>
|
||||
|
||||
QT_BEGIN_HEADER
|
||||
|
||||
QT_BEGIN_NAMESPACE
|
||||
|
||||
485
src/corelib/kernel/qobjectdefs_impl.h
Normal file
485
src/corelib/kernel/qobjectdefs_impl.h
Normal file
@ -0,0 +1,485 @@
|
||||
/****************************************************************************
|
||||
**
|
||||
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
|
||||
** Contact: http://www.qt-project.org/
|
||||
**
|
||||
** This file is part of the QtCore module of the Qt Toolkit.
|
||||
**
|
||||
** $QT_BEGIN_LICENSE:LGPL$
|
||||
** GNU Lesser General Public License Usage
|
||||
** This file may be used under the terms of the GNU Lesser General Public
|
||||
** License version 2.1 as published by the Free Software Foundation and
|
||||
** appearing in the file LICENSE.LGPL included in the packaging of this
|
||||
** file. Please review the following information to ensure the GNU Lesser
|
||||
** General Public License version 2.1 requirements will be met:
|
||||
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
|
||||
**
|
||||
** In addition, as a special exception, Nokia gives you certain additional
|
||||
** rights. These rights are described in the Nokia Qt LGPL Exception
|
||||
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
||||
**
|
||||
** GNU General Public License Usage
|
||||
** Alternatively, this file may be used under the terms of the GNU General
|
||||
** Public License version 3.0 as published by the Free Software Foundation
|
||||
** and appearing in the file LICENSE.GPL included in the packaging of this
|
||||
** file. Please review the following information to ensure the GNU General
|
||||
** Public License version 3.0 requirements will be met:
|
||||
** http://www.gnu.org/copyleft/gpl.html.
|
||||
**
|
||||
** Other Usage
|
||||
** Alternatively, this file may be used in accordance with the terms and
|
||||
** conditions contained in a signed written agreement between you and Nokia.
|
||||
**
|
||||
**
|
||||
**
|
||||
**
|
||||
**
|
||||
**
|
||||
** $QT_END_LICENSE$
|
||||
**
|
||||
****************************************************************************/
|
||||
|
||||
#ifndef Q_QDOC
|
||||
|
||||
#ifndef QOBJECTDEFS_H
|
||||
#error Do not include qobjectdefs_impl.h directly
|
||||
#endif
|
||||
|
||||
QT_BEGIN_HEADER
|
||||
|
||||
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 parametter 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;
|
||||
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 parametter 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}; };
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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]);
|
||||
}
|
||||
};
|
||||
|
||||
template<typename Ret> struct FunctionPointer<Ret (*) ()>
|
||||
{
|
||||
typedef void Arguments;
|
||||
typedef Ret (*Function) ();
|
||||
typedef Ret ReturnType;
|
||||
enum {ArgumentCount = 0};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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};
|
||||
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]);
|
||||
}
|
||||
};
|
||||
|
||||
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[4])), 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}; };
|
||||
|
||||
template <typename, typename, typename, typename> struct FunctorCall;
|
||||
template <int... I, typename... SignalArgs, typename R, typename Function>
|
||||
struct FunctorCall<IndexesList<I...>, List<SignalArgs...>, R, Function> {
|
||||
static void call(Function f, void **arg) {
|
||||
f((*reinterpret_cast<typename RemoveRef<SignalArgs>::Type *>(arg[I+1]))...), ApplyReturnValue<R>(arg[0]);
|
||||
}
|
||||
};
|
||||
template <int... I, typename... SignalArgs, typename R, typename... SlotArgs, typename SlotRet, class Obj>
|
||||
struct FunctorCall<IndexesList<I...>, 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[I+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)};
|
||||
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)};
|
||||
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(A2);
|
||||
static char test(...);
|
||||
static A1 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
|
||||
}
|
||||
|
||||
|
||||
QT_END_NAMESPACE
|
||||
|
||||
QT_END_HEADER
|
||||
|
||||
#endif
|
||||
Loading…
x
Reference in New Issue
Block a user