SubscriptNode.java

package edu.udel.cis.vsl.tass.ast.impl.expression;

import java.io.PrintWriter;
import java.util.NoSuchElementException;

import edu.udel.cis.vsl.tass.ast.IF.ASTNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.AbstractSyntaxTreeIF;
import edu.udel.cis.vsl.tass.ast.IF.expression.ExpressionNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.expression.SubscriptNodeIF;

public class SubscriptNode extends LHSExpressionNode implements SubscriptNodeIF {

	private ExpressionNodeIF arrayExpression;

	private ExpressionNodeIF indexExpression;

	public SubscriptNode(long id) {
		super(id);
	}
	
	public SubscriptNode(long id,
						 ExpressionNodeIF arrayExpression,
						 ExpressionNodeIF indexExpression) {
		super(id);
		this.arrayExpression = arrayExpression;
		this.indexExpression = indexExpression;
	}

	@Override
	public void setArrayExpression(ExpressionNodeIF arrayExpression) {
		this.arrayExpression = arrayExpression;
	}

	@Override
	public ExpressionNodeIF arrayExpression() {
		return arrayExpression;
	}

	@Override
	public void setIndexExpression(ExpressionNodeIF indexExpression) {
		this.indexExpression = indexExpression;
	}

	@Override
	public ExpressionNodeIF indexExpression() {
		return indexExpression;
	}

	@Override
	public ASTNodeIF child(int index) throws NoSuchElementException {
		switch (index) {
		case 0:
			return arrayExpression;
		case 1:
			return indexExpression;
		default:
			throw new NoSuchElementException("Node " + id()
					+ " does not have a child with index " + index + ".");
		}
	}

	@Override
	public void setChild(int i, ASTNodeIF child) throws NoSuchElementException {
		switch (i) {
		case 0:
			arrayExpression = (ExpressionNodeIF) child;
			break;
		case 1:
			indexExpression = (ExpressionNodeIF) child;
			break;
		default:
			throw new NoSuchElementException("Node " + id()
					+ " does not have a child with index " + i + ".");
		}
	}

	@Override
	public int numChildren() {
		return 2;
	}


	@Override
	protected String nodeType() {
		return "Subscript";
	}

	@Override
	public void toXml(String prefix, PrintWriter out,AbstractSyntaxTreeIF ast) {
		//TODO: Implement
	}

}