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#include "rpptreewalker.h"

QT_BEGIN_NAMESPACE

namespace Rpp {

void RppTreeWalker::evaluateItem(const Item *item)

{

    if(!item)

        return;

    if (Source *source = item->toSource())

        evaluateSource(source);

    else if (Directive *directive = item->toDirective())

        evaluateDirective(directive);

    else if (IfSection *ifSection = item->toIfSection())

        evaluateIfSection(ifSection);

    else if (Text *text = item->toText())

        evaluateText(text);

}

void RppTreeWalker::evaluateItemComposite(const ItemComposite *itemComposite)

{

    if (!itemComposite)

        return;

    for (int i = 0; i < itemComposite->count(); ++i) {

        evaluateItem(itemComposite->item(i));

    }

}

void RppTreeWalker::evaluateSource(const Source *source)

{

    evaluateItemComposite(source->toItemComposite());

}

void RppTreeWalker::evaluateDirective(const Directive *directive)

{

    if (!directive)

        return;

    if (EmptyDirective *dir = directive->toEmptyDirective())

        evaluateEmptyDirective(dir);

    else if (ErrorDirective *dir = directive->toErrorDirective())

        evaluateErrorDirective(dir);

    else if (PragmaDirective *dir = directive->toPragmaDirective())

        evaluatePragmaDirective(dir);

    else if (IncludeDirective *dir = directive->toIncludeDirective())

        evaluateIncludeDirective(dir);

    else if (DefineDirective *dir = directive->toDefineDirective())

        evaluateDefineDirective(dir);

    else if (UndefDirective *dir = directive->toUndefDirective())

        evaluateUndefDirective(dir);

    else if (LineDirective *dir = directive->toLineDirective())

        evaluateLineDirective(dir);

    else if (NonDirective *dir = directive->toNonDirective())

        evaluateNonDirective(dir);

    else if (NonDirective *dir = directive->toNonDirective())

        evaluateNonDirective(dir);

    else if (ConditionalDirective *dir = directive->toConditionalDirective())

        evaluateConditionalDirective(dir);

}

/*

    This function evaluates all the branches of an IfSection. You should 

    override it if you want to only evaluate the "correct" branch.

*/

void RppTreeWalker::evaluateIfSection(const IfSection *ifSection)

{

    if (!ifSection)

        return;

    evaluateItemComposite(ifSection->toItemComposite());

}

void RppTreeWalker::evaluateConditionalDirective(const ConditionalDirective *conditionalDirective)

{

    if (!conditionalDirective)

        return;

    if (IfdefDirective *dir = conditionalDirective->toIfdefDirective())

         evaluateIfdefDirective(dir);

    else if (IfndefDirective *dir = conditionalDirective->toIfndefDirective())

         evaluateIfndefDirective(dir);

    else if (IfDirective *dir = conditionalDirective->toIfDirective())

         evaluateIfDirective(dir);

    else if (ElifDirective *dir = conditionalDirective->toElifDirective())

         evaluateElifDirective(dir);

    else if (ElseDirective *dir = conditionalDirective->toElseDirective())

         evaluateElseDirective(dir);

}

void RppTreeWalker::evaluateIfdefDirective(const IfdefDirective *directive)

{

   if (!directive) 

       return;

   evaluateItemComposite(directive->toItemComposite());

}

void RppTreeWalker::evaluateIfndefDirective(const IfndefDirective *directive)

{

   if (!directive) 

       return;

   evaluateItemComposite(directive->toItemComposite());

}

void RppTreeWalker::evaluateIfDirective(const IfDirective *directive)

{

   if (!directive) 

       return;

   evaluateItemComposite(directive->toItemComposite());

}

void RppTreeWalker::evaluateElifDirective(const ElifDirective *directive)

{

   if (!directive) 

       return;

   evaluateItemComposite(directive->toItemComposite());

}

void RppTreeWalker::evaluateElseDirective(const ElseDirective *directive)

{

   if (!directive) 

       return;

   evaluateItemComposite(directive->toItemComposite());

}

}

QT_END_NAMESPACE