OpenAssetTools/src/Parser/Parsing/Impl/Defines/DefinesIfExpressionMatchers.cpp

#include "DefinesIfExpressionMatchers.h"

#include "Parsing/Simple/Matcher/SimpleMatcherFactory.h"

DefinesIfExpressionMatchers::DefinesIfExpressionMatchers()
    : DefinesIfExpressionMatchers(nullptr)
{
}

DefinesIfExpressionMatchers::DefinesIfExpressionMatchers(const DefinesIfDirectiveParsingState* state)
    : SimpleExpressionMatchers(false, false, true, true, false),
      m_state(state)
{
}

std::unique_ptr<SimpleExpressionMatchers::matcher_t> DefinesIfExpressionMatchers::ParseOperandExtension(const supplier_t* labelSupplier) const
{
    const SimpleMatcherFactory create(labelSupplier);

    return create.And({
        create.Keyword("defined"),
        create.Char('('),
        create.Identifier().Capture(CAPTURE_DEFINE_NAME),
        create.Char(')'),
    });
}

std::unique_ptr<ISimpleExpression> DefinesIfExpressionMatchers::ProcessOperandExtension(SequenceResult<SimpleParserValue>& result) const
{
    const auto& defineCapture = result.NextCapture(CAPTURE_DEFINE_NAME);

    assert(m_state);
    if(m_state && m_state->m_defines.find(defineCapture.IdentifierValue()) != m_state->m_defines.end())
        return std::make_unique<SimpleExpressionValue>(1);

    return std::make_unique<SimpleExpressionValue>(0);
}