/****************************************************************************

**

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** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the tools applications of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** 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 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.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

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** $QT_END_LICENSE$

**

****************************************************************************/

#include <QApplication>

#include <QDebug>

#include <QFile>

#include "codegenerator.h"

using namespace CodeGenerator;

const Item argument = "arg" + Counter();

const Item argumentRef = "&arg" + Counter();

const Item argumentType  = "Arg" + Counter();

const Item constArgumentType  = "const Arg" + Counter();

const Item parameterType  = "Param" + Counter();

Group argumentTypes(argumentType);          // expands to ",Arg1, Arg2, ..."

Group argumentTypesNoPrefix(argumentType);  // expands to "Arg1, Arg2, ..."

Group arguments(argument);                  // expands to ",arg1, arg2, ..."

Group argumentsNoPrefix(argument);          // expands to "arg1, arg2, ..."

Group parameterTypes(parameterType);        // expands to ",Param1, Param2, ..."

Group parameterTypesNoPrefix(parameterType); // expands to "Param1, Param2, ..."

Group typenameTypes("typename " + parameterType + ", typename " + argumentType); // expands to " ,typename Param1, typename Arg1, ..."

Group types(parameterType + ", " + argumentType); // expands to ", Param1, Arg1, ..."

Group functionParameters(constArgumentType + " " + argumentRef);

Group typenameArgumentTypes("typename " + argumentType);

Group initializers(argument + "(" + argument + ")");

Group classData(argumentType +" "  + argument + ";");

Group arglist(argument);

Group typeList(argumentTypes);

void init()

{

    argumentTypes.setPrefix(", ");

    arguments.setPrefix(", ");

    parameterTypes.setPrefix(", ");

    typenameTypes.setPrefix(", ");

    types.setPrefix(", ");

    functionParameters.setPrefix(", ");

    typenameArgumentTypes.setPrefix(", ");

    initializers.setPrefix(", ");

    classData.setSeparator(" ");

    classData.setPrefix("    ");

    arglist.setPrefix(", ");

    typeList.setPrefix(", ");

}

Item Line(Item item)

{

    return item + "\n";

}

Item generateRunFunctions(int repeats)

{

    Item functionPointerType = "T (*)(" + parameterTypesNoPrefix + ")";

    Item functionPointerParameter = "T (*functionPointer)(" + parameterTypesNoPrefix + ")";

    // plain functions

    Repeater functions = Line ("template <typename T" + typenameTypes + ">") +

                         Line ("QFuture<T> run(" + functionPointerParameter + functionParameters + ")")  +

                         Line("{") +

                         Line("    return (new QT_TYPENAME SelectStoredFunctorCall" + Counter() + "<T, " +

                                   functionPointerType + argumentTypes + ">::type(functionPointer" + arguments + "))->start();") +

                         Line("}");

    functions.setRepeatCount(repeats);

    // function objects by value

    Repeater functionObjects =  Line ("template <typename FunctionObject" + typenameArgumentTypes + ">") +

                                Line ("QFuture<typename FunctionObject::result_type> run(FunctionObject functionObject" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new QT_TYPENAME SelectStoredFunctorCall" + Counter() +

                                     "<QT_TYPENAME FunctionObject::result_type, FunctionObject" +

                                     argumentTypes + ">::type(functionObject" + arguments + "))->start();") +

                                Line("}");

    functionObjects.setRepeatCount(repeats);

    // function objects by pointer

    Repeater functionObjectsPointer =  Line ("template <typename FunctionObject" + typenameArgumentTypes + ">") +

                                Line ("QFuture<typename FunctionObject::result_type> run(FunctionObject *functionObject" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new QT_TYPENAME SelectStoredFunctorPointerCall" + Counter() +

                                     "<QT_TYPENAME FunctionObject::result_type, FunctionObject" +

                                     argumentTypes + ">::type(functionObject" + arguments + "))->start();") +

                                Line("}");

    functionObjectsPointer.setRepeatCount(repeats);

    // member functions by value

    Repeater memberFunction =  Line ("template <typename T, typename Class" + typenameTypes + ">") +

                                Line ("QFuture<T> run(const Class &object, T (Class::*fn)(" + parameterTypesNoPrefix  + ")" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new QT_TYPENAME SelectStoredMemberFunctionCall" + Counter() +

                                     "<T, Class" +

                                     types + ">::type(fn, object" + arguments + "))->start();") +

                                Line("}");

    memberFunction.setRepeatCount(repeats);

    // const member functions by value

    Repeater constMemberFunction =  Line ("template <typename T, typename Class" + typenameTypes + ">") +

                                Line ("QFuture<T> run(const Class &object, T (Class::*fn)(" + parameterTypesNoPrefix  + ") const" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new QT_TYPENAME SelectStoredConstMemberFunctionCall" + Counter() +

                                     "<T, Class" +

                                     types + ">::type(fn, object" + arguments + "))->start();") +

                                Line("}");

    constMemberFunction.setRepeatCount(repeats);

    // member functions by class pointer

    Repeater memberFunctionPointer =  Line ("template <typename T, typename Class" + typenameTypes + ">") +

                                Line ("QFuture<T> run(Class *object, T (Class::*fn)(" + parameterTypesNoPrefix  + ")" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new QT_TYPENAME SelectStoredMemberFunctionPointerCall" + Counter() +

                                     "<T, Class" +

                                     types + ">::type(fn, object" + arguments + "))->start();") +

                                Line("}");

    memberFunctionPointer.setRepeatCount(repeats);

    // const member functions by class pointer

    Repeater constMemberFunctionPointer =  Line ("template <typename T, typename Class" + typenameTypes + ">") +

                                Line ("QFuture<T> run(const Class *object, T (Class::*fn)(" + parameterTypesNoPrefix  + ") const" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new QT_TYPENAME SelectStoredConstMemberFunctionPointerCall" + Counter() +

                                     "<T, Class" +

                                     types + ">::type(fn, object" + arguments + "))->start();") +

                                Line("}");

    constMemberFunctionPointer.setRepeatCount(repeats);

    Item interfaceFunctionPointerType = "void (*)(QFutureInterface<T> &" + argumentTypes + ")";

    Item interfaceFunctionPointerParameter = "void (*functionPointer)(QFutureInterface<T> &" + argumentTypes + ")";

/*

    // QFutureInterface functions

    Repeater interfaceFunctions = Line ("template <typename T" + typenameTypes + ">") +

                         Line ("QFuture<T> run(" + interfaceFunctionPointerParameter + functionParameters + ")")  +

                         Line("{") +

                         Line("    return (new StoredInterfaceFunctionCall" + Counter() + "<T, " +

                                   interfaceFunctionPointerType + typenameArgumentTypes + ">(functionPointer" + arguments + "))->start();") +

                         Line("}");

    functions.setRepeatCount(repeats);

    interfaceFunctions.setRepeatCount(repeats);

    // member functions by class pointer

    Repeater interfaceMemberFunction =  Line ("template <typename Class, typename T" + typenameTypes + ">") +

                                Line ("QFuture<T> run(void (Class::*fn)(QFutureInterface<T> &), Class *object" + functionParameters + ")") +

                                Line("{") +

                                Line("    return (new StoredInterfaceMemberFunctionCall" + Counter() +

                                     "<T, void (Class::*)(QFutureInterface<T> &), Class" +

                                     typenameArgumentTypes + ">(fn, object" + arguments + "))->start();") +

                                Line("}");

    memberFunctionPointer.setRepeatCount(repeats);

*/

    return functions + Line("") + functionObjects + Line("") + functionObjectsPointer + Line("")

          + memberFunction + Line("") + constMemberFunction + Line("")

          + memberFunctionPointer + Line("") + constMemberFunctionPointer + Line("")

  /*        + interfaceFunctions + Line("") + interfaceMemberFunction + Line("")*/

    ;

}

Item functions(Item className, Item functorType, Item callLine)

{

    return

    Line("template <typename T, typename FunctionPointer" +  typenameArgumentTypes + ">") +

    Line("struct " + className +  Counter() +": public RunFunctionTask<T>") +

    Line("{") +

    Line("    inline " + className + Counter() + "(" + functorType + " function" + functionParameters +")") +

    Line("      : function(function)" + initializers + " {}") +

    Line("    void runFunctor() {" + callLine + argumentsNoPrefix + "); }") +

    Line("    " + functorType + " function;") +

    Line(       classData) +

    Line("};") +

    Line("");

}

Item functionSelector(Item classNameBase)

{

    return

    Line("template <typename T, typename FunctionPointer" + typenameArgumentTypes + ">") +

    Line("struct Select" + classNameBase + Counter()) +

    Line("{") +

    Line("    typedef typename SelectSpecialization<T>::template") +

    Line("        Type<" + classNameBase + Counter() + "    <T, FunctionPointer" + argumentTypes + ">,") +

    Line("             Void" + classNameBase + Counter() + "<T, FunctionPointer" + argumentTypes + "> >::type type;") +

    Line("};");

}

Item memberFunctions(Item className, Item constFunction, Item objectArgument, Item objectMember, Item callLine)

{

    return

    Line("template <typename T, typename Class"  + typenameTypes + ">") +

    Line("class " + className + Counter() + " : public RunFunctionTask<T>") +

    Line("{") +

    Line("public:")+

    Line("    " + className + Counter() + "(T (Class::*fn)(" + parameterTypesNoPrefix  + ") " + constFunction + ", " + objectArgument + functionParameters + ")") +

    Line("    : fn(fn), object(object)" + initializers + "{ }" ) +

    Line("")+

    Line("    void runFunctor()")+

    Line("    {")+

    Line("        " + callLine + argumentsNoPrefix +  ");")+

    Line("    }")+

    Line("private:")+

    Line("    T (Class::*fn)(" + parameterTypesNoPrefix  + ")" + constFunction + ";")+

    Line("    " + objectMember + ";") +

    Line(        classData) +

    Line("};");

}

Item memberFunctionSelector(Item classNameBase)

{

    return

    Line("template <typename T, typename Class" + typenameTypes + ">") +

    Line("struct Select" + classNameBase + Counter()) +

    Line("{") +

    Line("    typedef typename SelectSpecialization<T>::template") +

    Line("        Type<" + classNameBase + Counter() + "    <T, Class" + types + ">,") +

    Line("             Void" + classNameBase + Counter() + "<T, Class" + types + "> >::type type;") +

    Line("};");

}

Item generateSFCs(int repeats)

{

    Item functionPointerTypedef = "typedef void (*FunctionPointer)(" + argumentTypesNoPrefix + ");";

    Repeater dataStructures =

    // Function objects by value

    functions(Item("StoredFunctorCall"), Item("FunctionPointer"), Item(" this->result = function(")) +

    functions(Item("VoidStoredFunctorCall"), Item("FunctionPointer"), Item(" function(")) +

    functionSelector(Item("StoredFunctorCall")) +

    // Function objects by pointer

    functions(Item("StoredFunctorPointerCall"), Item("FunctionPointer *"), Item(" this->result =(*function)(")) +

    functions(Item("VoidStoredFunctorPointerCall"), Item("FunctionPointer *"), Item("(*function)(")) +

    functionSelector(Item("StoredFunctorPointerCall")) +

    // Member functions by value

    memberFunctions(Item("StoredMemberFunctionCall"), Item(""), Item("const Class &object"), Item("Class object"), Item("this->result = (object.*fn)(")) +

    memberFunctions(Item("VoidStoredMemberFunctionCall"), Item(""), Item("const Class &object"), Item("Class object"), Item("(object.*fn)(")) +

    memberFunctionSelector(Item("StoredMemberFunctionCall")) +

    // Const Member functions by value

    memberFunctions(Item("StoredConstMemberFunctionCall"), Item("const"), Item("const Class &object"), Item("const Class object"), Item("this->result = (object.*fn)(")) +

    memberFunctions(Item("VoidStoredConstMemberFunctionCall"), Item("const"), Item("const Class &object"), Item("const Class object"), Item("(object.*fn)(")) +

    memberFunctionSelector(Item("StoredConstMemberFunctionCall")) +

    // Member functions by pointer

    memberFunctions(Item("StoredMemberFunctionPointerCall"), Item(""), Item("Class *object"), Item("Class *object"), Item("this->result = (object->*fn)(")) +

    memberFunctions(Item("VoidStoredMemberFunctionPointerCall"), Item(""), Item("Class *object"), Item("Class *object"), Item("(object->*fn)(")) +

    memberFunctionSelector(Item("StoredMemberFunctionPointerCall")) +

    // const member functions by pointer

    memberFunctions(Item("StoredConstMemberFunctionPointerCall"), Item("const"), Item("Class const *object"), Item("Class const *object"), Item("this->result = (object->*fn)(")) +

    memberFunctions(Item("VoidStoredConstMemberFunctionPointerCall"), Item("const"), Item("Class const *object"), Item("Class const *object"), Item("(object->*fn)(")) +

    memberFunctionSelector(Item("StoredConstMemberFunctionPointerCall"));

    dataStructures.setRepeatCount(repeats);

    return dataStructures;

}

void writeFile(QString fileName, QByteArray contents)

{

    QFile runFile(fileName);

    if (runFile.open(QIODevice::WriteOnly) == false) {

        qDebug() << "Write to" << fileName << "failed";

        return;

    }

    runFile.write(contents);

    runFile.close();

    qDebug() << "Write to" << fileName << "Ok";

}

Item dollarQuote(Item item)

{

    return Item("$") + item + Item("$");

}

int main()

{

    const int repeats = 6;

    init();

    Item run =  (

                       Line("/****************************************************************************") +

                       Line("**") +

                       Line("** Contact: Nokia Corporation (qt-info@nokia.com)") +

                       Line("**") +

                       Line("** This file is part of the Qt Toolkit.") +

                       Line("**") +

                       Line("****************************************************************************/") +

                       Line("") +

                       Line("// Generated code, do not edit! Use generator at tools/qtconcurrent/generaterun/") +

                       Line("#ifndef QTCONCURRENT_RUN_H") +

                       Line("#define QTCONCURRENT_RUN_H") +

                       Line("") +

                       Line("#ifndef QT_NO_CONCURRENT") +

                       Line("") +

                       Line("#include <QtCore/qtconcurrentrunbase.h>") +

                       Line("#include <QtCore/qtconcurrentstoredfunctioncall.h>") +

                       Line("") +

                       Line("QT_BEGIN_HEADER") +

                       Line("QT_BEGIN_NAMESPACE") +

                       Line("") +

                       Line("QT_MODULE(Core)") +

                       Line("") +

                       Line("#ifdef qdoc") +

                       Line("") +

                       Line("namespace QtConcurrent {") +

                       Line("") +

                       Line("    template <typename T>") +

                       Line("    QFuture<T> run(Function function, ...);") +

                       Line("") +

                       Line("} // namespace QtConcurrent") +

                       Line("") +

                       Line("#else") +

                       Line("") +

                       Line("namespace QtConcurrent {") +

                       Line("") +

                       generateRunFunctions(repeats) +

                       Line("} //namespace QtConcurrent") +

                       Line("") +

                       Line("#endif // qdoc") +

                       Line("") +

                       Line("QT_END_NAMESPACE") +

                       Line("QT_END_HEADER") +

                       Line("") +

                       Line("#endif")

                      );

    writeFile("../../../src/corelib/concurrent/qtconcurrentrun.h", run.generate());

    Item storedFunctionCall = (

                                     Line("/****************************************************************************") +

                                     Line("**") +

                                     Line("** Contact: Nokia Corporation (qt-info@nokia.com)") +

                                     Line("**") +

                                     Line("** This file is part of the Qt Toolkit.") +

                                     Line("**") +

                                     Line("****************************************************************************/") +

                                     Line("") +

                                     Line("// Generated code, do not edit! Use generator at tools/qtconcurrent/generaterun/") +

                                     Line("#ifndef QTCONCURRENT_STOREDFUNCTIONCALL_H") +

                                     Line("#define QTCONCURRENT_STOREDFUNCTIONCALL_H") +

                                     Line("") +

                                     Line("#include <QtCore/qglobal.h>") +

                                     Line("") +

                                     Line("#ifndef QT_NO_CONCURRENT") +

                                     Line("#include <QtCore/qtconcurrentrunbase.h>") +

                                     Line("") +

                                     Line("QT_BEGIN_HEADER") +

                                     Line("QT_BEGIN_NAMESPACE") +

                                     Line("") +

                                     Line("QT_MODULE(Core)") +

                                     Line("") +

                                     Line("#ifndef qdoc") +

                                     Line("") +

                                     Line("namespace QtConcurrent {") +

                                     generateSFCs(repeats) +

                                     Line("} //namespace QtConcurrent") +

                                     Line("") +

                                     Line("#endif // qdoc") +

                                     Line("") +

                                     Line("QT_END_NAMESPACE") +

                                     Line("QT_END_HEADER") +

                                     Line("") +

                                     Line("#endif // QT_NO_CONCURRENT") +

                                     Line("") +

                                     Line("#endif")

                                    );

    writeFile("../../../src/corelib/concurrent/qtconcurrentstoredfunctioncall.h", storedFunctionCall.generate());

}