From 96501b0a18f4f70048403dccc4cb42dd71db8f9d Mon Sep 17 00:00:00 2001
From: Lars Knoll <lars.knoll@nokia.com>
Date: Fri, 3 Feb 2012 14:17:26 +0100
Subject: Move QtConcurrent into its own module

Task-number: QTBUG-20892

Change-Id: I614500aafb6428915509983608bbb0ade4e4f016
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---
 src/concurrent/qtconcurrentfunctionwrappers.h | 303 ++++++++++++++++++++++++++
 1 file changed, 303 insertions(+)
 create mode 100644 src/concurrent/qtconcurrentfunctionwrappers.h

(limited to 'src/concurrent/qtconcurrentfunctionwrappers.h')

diff --git a/src/concurrent/qtconcurrentfunctionwrappers.h b/src/concurrent/qtconcurrentfunctionwrappers.h
new file mode 100644
index 0000000000..9b86b73f6d
--- /dev/null
+++ b/src/concurrent/qtconcurrentfunctionwrappers.h
@@ -0,0 +1,303 @@
+/****************************************************************************
+**
+** 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 QTCONCURRENT_FUNCTIONWRAPPERS_H
+#define QTCONCURRENT_FUNCTIONWRAPPERS_H
+
+#include <QtCore/qglobal.h>
+
+#ifndef QT_NO_CONCURRENT
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+
+
+#ifndef qdoc
+
+namespace QtConcurrent {
+
+template <typename T>
+class FunctionWrapper0
+{
+public:
+    typedef T (*FunctionPointerType)();
+    typedef T result_type;
+    inline FunctionWrapper0(FunctionPointerType _functionPointer)
+    :functionPointer(_functionPointer) { }
+
+    inline T operator()()
+    {
+        return functionPointer();
+    }
+private:
+    FunctionPointerType functionPointer;
+};
+
+template <typename T, typename U>
+class FunctionWrapper1
+{
+public:
+    typedef T (*FunctionPointerType)(U u);
+    typedef T result_type;
+    inline FunctionWrapper1(FunctionPointerType _functionPointer)
+    :functionPointer(_functionPointer) { }
+
+    inline T operator()(U u)
+    {
+        return functionPointer(u);
+    }
+
+private:
+    FunctionPointerType functionPointer;
+};
+
+template <typename T, typename U, typename V>
+class FunctionWrapper2
+{
+public:
+    typedef T (*FunctionPointerType)(U u, V v);
+    typedef T result_type;
+    inline FunctionWrapper2(FunctionPointerType _functionPointer)
+    :functionPointer(_functionPointer) { }
+
+    inline T operator()(U u, V v)
+    {
+        return functionPointer(u, v);
+    }
+private:
+    FunctionPointerType functionPointer;
+};
+
+template <typename T, typename C>
+class MemberFunctionWrapper
+{
+public:
+    typedef T (C::*FunctionPointerType)();
+    typedef T result_type;
+    inline MemberFunctionWrapper(FunctionPointerType _functionPointer)
+    :functionPointer(_functionPointer) { }
+
+    inline T operator()(C &c)
+    {
+        return (c.*functionPointer)();
+    }
+private:
+    FunctionPointerType functionPointer;
+};
+
+template <typename T, typename C, typename U>
+class MemberFunctionWrapper1
+{
+public:
+    typedef T (C::*FunctionPointerType)(U);
+    typedef T result_type;
+
+    inline MemberFunctionWrapper1(FunctionPointerType _functionPointer)
+        : functionPointer(_functionPointer)
+    { }
+
+    inline T operator()(C &c, U u)
+    {
+        return (c.*functionPointer)(u);
+    }
+
+private:
+    FunctionPointerType functionPointer;
+};
+
+template <typename T, typename C>
+class ConstMemberFunctionWrapper
+{
+public:
+    typedef T (C::*FunctionPointerType)() const;
+    typedef T result_type;
+    inline ConstMemberFunctionWrapper(FunctionPointerType _functionPointer)
+    :functionPointer(_functionPointer) { }
+
+    inline T operator()(const C &c) const
+    {
+        return (c.*functionPointer)();
+    }
+private:
+    FunctionPointerType functionPointer;
+};
+
+} // namespace QtConcurrent.
+
+namespace QtPrivate {
+
+template <typename T>
+const T& createFunctionWrapper(const T& t)
+{
+    return t;
+}
+
+template <typename T, typename U>
+QtConcurrent::FunctionWrapper1<T, U> createFunctionWrapper(T (*func)(U))
+{
+    return QtConcurrent::FunctionWrapper1<T, U>(func);
+}
+
+template <typename T, typename C>
+QtConcurrent::MemberFunctionWrapper<T, C> createFunctionWrapper(T (C::*func)())
+{
+    return QtConcurrent::MemberFunctionWrapper<T, C>(func);
+}
+
+template <typename T, typename C, typename U>
+QtConcurrent::MemberFunctionWrapper1<T, C, U> createFunctionWrapper(T (C::*func)(U))
+{
+    return QtConcurrent::MemberFunctionWrapper1<T, C, U>(func);
+}
+
+template <typename T, typename C>
+QtConcurrent::ConstMemberFunctionWrapper<T, C> createFunctionWrapper(T (C::*func)() const)
+{
+    return QtConcurrent::ConstMemberFunctionWrapper<T, C>(func);
+}
+
+struct PushBackWrapper
+{
+    typedef void result_type;
+
+    template <class C, class U>
+    inline void operator()(C &c, const U &u) const
+    {
+        return c.push_back(u);
+    }
+
+#ifdef Q_COMPILER_RVALUE_REFS
+    template <class C, class U>
+    inline void operator()(C &c, U &&u) const
+    {
+        return c.push_back(u);
+    }
+#endif
+};
+
+template <typename Functor, bool foo = HasResultType<Functor>::Value>
+struct LazyResultType { typedef typename Functor::result_type Type; };
+template <typename Functor>
+struct LazyResultType<Functor, false> { typedef void Type; };
+
+template <class T>
+struct ReduceResultType;
+
+template <class U, class V>
+struct ReduceResultType<void(*)(U&,V)>
+{
+    typedef U ResultType;
+};
+
+template <class T, class C, class U>
+struct ReduceResultType<T(C::*)(U)>
+{
+    typedef C ResultType;
+};
+
+template <class InputSequence, class MapFunctor>
+struct MapResultType
+{
+    typedef typename LazyResultType<MapFunctor>::Type ResultType;
+};
+
+template <class U, class V>
+struct MapResultType<void, U (*)(V)>
+{
+    typedef U ResultType;
+};
+
+template <class T, class C>
+struct MapResultType<void, T(C::*)() const>
+{
+    typedef T ResultType;
+};
+
+#ifndef QT_NO_TEMPLATE_TEMPLATE_PARAMETERS
+
+template <template <typename> class InputSequence, typename MapFunctor, typename T>
+struct MapResultType<InputSequence<T>, MapFunctor>
+{
+    typedef InputSequence<typename LazyResultType<MapFunctor>::Type> ResultType;
+};
+
+template <template <typename> class InputSequence, class T, class U, class V>
+struct MapResultType<InputSequence<T>, U (*)(V)>
+{
+    typedef InputSequence<U> ResultType;
+};
+
+template <template <typename> class InputSequence, class T, class U, class C>
+struct MapResultType<InputSequence<T>, U(C::*)() const>
+{
+    typedef InputSequence<U> ResultType;
+};
+
+#endif // QT_NO_TEMPLATE_TEMPLATE_PARAMETER
+
+template <class MapFunctor>
+struct MapResultType<QStringList, MapFunctor>
+{
+    typedef QList<typename LazyResultType<MapFunctor>::Type> ResultType;
+};
+
+template <class U, class V>
+struct MapResultType<QStringList, U (*)(V)>
+{
+    typedef QList<U> ResultType;
+};
+
+template <class U, class C>
+struct MapResultType<QStringList, U(C::*)() const>
+{
+    typedef QList<U> ResultType;
+};
+
+} // namespace QtPrivate.
+
+#endif //qdoc
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif // QT_NO_CONCURRENT
+
+#endif
-- 
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