/**
  *
  *                      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 java.util.ArrayList;

import org.momut.ooas.ast.IAstVisitor;
import org.momut.ooas.ast.IScope;
import org.momut.ooas.ast.identifiers.Identifier;
import org.momut.ooas.parser.SymbolTable;

///////////////////////////////////////////////
///  Constructor: Set
///
public final class SetConstructor extends TypeConstructionExpression implements IScope
{
	private ArrayList<Expression> m_items;
	private final SymbolTable m_comprehensionVars;
	private IScope m_parentScope;
	private Expression m_comprehension;
	private boolean m_hasComprehension = false;

	public ArrayList<Expression> items() { return m_items; }
	public Expression comprehension() { return m_comprehension; }
	public boolean hasComprehension() { return m_hasComprehension; }
	public SymbolTable comprehensionVariables() { return m_comprehensionVars; }

	public SetConstructor(int line, int pos)
	{
		super (ExpressionKind.SetConstr, line, pos);
		m_items = new ArrayList<Expression>();
		m_comprehensionVars = new SymbolTable();
	}

	public SetConstructor(SetConstructor toCopy)
	{
		super (toCopy);
		m_items = new ArrayList<Expression>(toCopy.m_items);
		m_comprehensionVars = new SymbolTable(toCopy.m_comprehensionVars);
		m_parentScope = toCopy.m_parentScope;
		m_comprehension = toCopy.m_comprehension;
		m_hasComprehension = toCopy.m_hasComprehension;
	}

	@Override
	public /*override*/ Expression Clone()
	{
		return new SetConstructor(this);
	}

	public void AddItem(Expression anItem)
	{
		m_items.add(anItem);
	}

	public void SetComprehension(Expression anExpr)
	{
		m_comprehension = anExpr;
	}

	public void SetHasComprehension(boolean flag)
	{
		m_hasComprehension = flag;
	}

	@Override
	public Identifier ResolveIdentifier(String aName)
	{
		if (m_comprehensionVars.Defined(aName))
			return m_comprehensionVars.Get(aName);
		else
			return null;
	}

	@Override
	public IScope GetParentScope()
	{
		return m_parentScope;
	}

	@Override
	public void SetParentScope(IScope parentScope)
	{
		m_parentScope = parentScope;
	}

	@Override
	public void AddIdentifier(Identifier anIdentifier, Object tag)
	{
		m_comprehensionVars.AddIdentifier(anIdentifier);
	}

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

	public void SetItems(ArrayList<Expression> newItems)
	{
		m_items = newItems;
	}

}