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#include "codegenerator.h"

#include <qdebug.h>

namespace CodeGenerator

{

//Convenience constructor so you can say Item("foo")

Item::Item(const char * const text) : generator(Text(QByteArray(text)).generator) {}

int BaseGenerator::currentCount(GeneratorStack * const stack) const

{

    const int stackSize = stack->count();

    for (int i = stackSize - 1; i >= 0; --i) {

        BaseGenerator const * const generator = stack->at(i);

        switch (generator->type) {

            case RepeaterType: {

                RepeaterGenerator const * const repeater = static_cast<RepeaterGenerator const * const>(generator);

                return repeater->currentRepeat;

            } break;

            case GroupType: {

                GroupGenerator const * const group = static_cast<GroupGenerator const * const>(generator);

                return group->currentRepeat;

            } break;

            default:

            break;

        }

    }

    return -1;

}

int BaseGenerator::repeatCount(GeneratorStack * const stack) const

{

    const int stackSize = stack->count();

    for (int i = stackSize - 1; i >= 0; --i) {

        BaseGenerator const * const generator = stack->at(i);

        switch (generator->type) {

            case RepeaterType: {

                RepeaterGenerator const * const repeater = static_cast<RepeaterGenerator const * const>(generator);

                return repeater->currentRepeat;

            } break;

/*            case GroupType: {

                GroupGenerator const * const group = static_cast<GroupGenerator const * const>(generator);

                return group->currentRepeat;

            } break;

*/  

            default:

            break;

        }

    }

    return -1;

}

QByteArray RepeaterGenerator::generate(GeneratorStack * const stack)

{ 

    GeneratorStacker stacker(stack, this);

    QByteArray generated;

    for (int i = repeatOffset; i < repeatCount + repeatOffset; ++i) {

        currentRepeat = i;

        generated += childGenerator->generate(stack);

    }

    return generated;

};

QByteArray GroupGenerator::generate(GeneratorStack * const stack)

{ 

    const int repeatCount = currentCount(stack);

    GeneratorStacker stacker(stack, this);

    QByteArray generated;

    if (repeatCount > 0)

        generated += prefix->generate(stack);

    for (int i = 1; i <= repeatCount; ++i) {

        currentRepeat = i;

        generated += childGenerator->generate(stack);

        if (i != repeatCount)

            generated += separator->generate(stack);

    }

    if (repeatCount > 0)

        generated += postfix->generate(stack);

    return generated;

};

const Compound operator+(const Item &a, const Item &b)

{

    return Compound(a, b);

}

const Compound operator+(const Item &a, const char * const text)

{

    return Compound(a, Text(text));

}

const Compound operator+(const char * const text, const Item &b)

{

    return Compound(Text(text), b);    

}

}