BoundVariableDeclarationNode.java

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

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.IdentifierNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.declaration.BoundVariableDeclarationNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.expression.BindingExpressionNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.type.TypeNodeIF;

public class BoundVariableDeclarationNode extends VariableDeclarationNode
		implements BoundVariableDeclarationNodeIF {

	private BindingExpressionNodeIF containingExpression;

	public BoundVariableDeclarationNode(long id) {
		super(id);
	}
	
	public BoundVariableDeclarationNode(long id, IdentifierNodeIF identifier,
			TypeNodeIF type, BindingExpressionNodeIF containingExpression) {
		super(id, identifier, type);
		this.containingExpression = containingExpression;
	}

	@Override
	public BindingExpressionNodeIF containingExpression() {
		return containingExpression;
	}

	@Override
	public void setContainingExpression(
			BindingExpressionNodeIF containingExpression) {
		this.containingExpression = containingExpression;
	}

	@Override
	public int numChildren() {
		return 4;
	}

	/**
	 * Children are: 
	 * 0 : Name 
	 * 1 : Type 
	 * 2 : Initializer 
	 * 3 : Containing Expression
	 */
	@Override
	@SuppressWarnings("fallthrough")
	public void setChild(int i, ASTNodeIF child) throws NoSuchElementException {
		switch (i) {
		case 0:
			//Fallthrough
		case 1:
			//Fallthrough
		case 2:
			super.setChild(i, child);
			break;
		case 3:
			this.containingExpression = (BindingExpressionNodeIF) child;
			break;
		default:
			throw new NoSuchElementException("Node " + id()
					+ " does not have a child with index " + i + ".");
		}
	}

	@Override
	@SuppressWarnings("fallthrough")
	public ASTNodeIF child(int index) throws NoSuchElementException {
		switch (index) {
		case 0:
			//Fallthrough
		case 1:
			//Fallthrough
		case 2:
			return super.child(index);
		case 3:
			return containingExpression;
		default:
			throw new NoSuchElementException("Node " + id()
					+ " does not have a child with index " + index + ".");
		}
	}

	@Override
	protected String nodeType() {
		return "Bound Variable Declaration";
	}

	@Override
	public String toString() {
		return super.toString() + " containingExpression: " +
			containingExpression.id();
	}

    @Override
	public void toXml(String prefix, PrintWriter out,AbstractSyntaxTreeIF ast) {
		super.toXml(prefix,out,ast);
		out.println(prefix+"<bvn:bindingExpressionRef>"+
					containingExpression.id() +
					"</bvn:bindingExpressionRef>");
	}
}