/**
  *
  *                      OOAS Compiler
  *
  *       Copyright 2015, AIT Austrian Institute of Technology.
  * This code is based on the C# Version of the OOAS Compiler, which is
  * copyright 2015 by the Institute of Software Technology, Graz University
  * of Technology with portions copyright by the AIT Austrian Institute of
  * Technology. All rights reserved.
  *
  * SEE THE "LICENSE" FILE FOR THE TERMS UNDER WHICH THIS FILE IS PROVIDED.
  *
  * If you modify the file please update the list of contributors below to in-
  * clude your name. Please also stick to the coding convention of using TABs
  * to do the basic (block-level) indentation and spaces for anything after
  * that. (Enable the display of special chars and it should be pretty obvious
  * what this means.) Also, remove all trailing whitespace.
  *
  * Contributors:
  *               Willibald Krenn (AIT)
  *               Stephan Zimmerer (AIT)
  *               Markus Demetz (AIT)
  *               Christoph Czurda (AIT)
  *
  */


package org.momut.ooas.ast.expressions;

import org.momut.ooas.ast.IAstVisitor;
import org.momut.ooas.utils.exceptions.ArgumentException;

///////////////////////////////////////////////
///  Some constant bool, int, float, char,
///  qval or nil value
///
public final class ValueExpression<T> extends LeafExpression
{
	private final T m_value;

	public T value() { return m_value; }
	public final Class<T> m_clazz;

	public ValueExpression(T aValue, int line, int pos, Class<T> clazz)
	{
		super(LeafTypeEnum.unset, ExpressionKind.Value, line, pos);
		m_value = aValue;
		if (Integer.class.isAssignableFrom(clazz))
			m_valueType = LeafTypeEnum.integer;
		else if (Boolean.class.isAssignableFrom(clazz))
			m_valueType = LeafTypeEnum.bool;
		else if (Double.class.isAssignableFrom(clazz))
			m_valueType = LeafTypeEnum.real;
		else if (Character.class.isAssignableFrom(clazz))
			m_valueType = LeafTypeEnum.chr;
		else if (Object.class.isAssignableFrom(clazz))
			m_valueType = LeafTypeEnum.reference;
		else
			throw new ArgumentException();

		m_clazz = clazz;
	}

	public ValueExpression(ValueExpression<T> toCopy)
	{
		super(toCopy);
		m_value = toCopy.m_value;
		m_clazz = toCopy.m_clazz;
	}

	@Override
	public /*override*/ Expression Clone()
	{
		return new ValueExpression<T>(this);
	}

	@Override
	public /*override*/ void Accept(IAstVisitor visitor)
	{
		visitor.visit(this);
	}
}