/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2017-     Statoil ASA
// 
//  ResInsight is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
// 
//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
//  FITNESS FOR A PARTICULAR PURPOSE.
// 
//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html> 
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "ExpressionParser.h"

#include "ExpressionParserImpl.h"

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
ExpressionParser::ExpressionParser()
{
    m_expressionParserImpl = std::unique_ptr<ExpressionParserImpl>(new ExpressionParserImpl);
}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
ExpressionParser::~ExpressionParser()
{

}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
std::vector<QString> ExpressionParser::detectReferencedVariables(const QString& expression)
{
    return ExpressionParserImpl::detectReferencedVariables(expression);
}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
void ExpressionParser::assignVector(const QString& variableName, std::vector<double>& vector)
{
    m_expressionParserImpl->assignVector(variableName, vector);
}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
bool ExpressionParser::evaluate(const QString& expressionText, QString* errorText)
{
    return m_expressionParserImpl->evaluate(expressionText, errorText);
}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
bool ExpressionParser::expandIfStatementsAndEvaluate(const QString& expressionText, QString* errorText /*= nullptr*/)
{
    if (expressionText.contains("if"))
    {
        QString expandedExpressionText = ExpressionParserImpl::expandIfStatements(expressionText);

        return m_expressionParserImpl->evaluate(expandedExpressionText, errorText);
    }
    else
    {
        return m_expressionParserImpl->evaluate(expressionText, errorText);
    }

}