LocalVariableDeclarationNode.java

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

import edu.udel.cis.vsl.tass.ast.IF.AbstractSyntaxTreeIF;

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.IdentifierNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.declaration.LocalVariableDeclarationNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.statement.BlockNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.type.TypeNodeIF;

public class LocalVariableDeclarationNode extends VariableDeclarationNode
		implements LocalVariableDeclarationNodeIF {

	BlockNodeIF block;
	
	public LocalVariableDeclarationNode(long id) {
		super(id);
	}
	
	public LocalVariableDeclarationNode(long id, IdentifierNodeIF identifier,
			TypeNodeIF type, BlockNodeIF block) {
		super(id, identifier, type);
		this.block = block;
	}

	@Override
	public BlockNodeIF block() {
		return block;
	}

	@Override
	public void setBlock(BlockNodeIF block) {
		this.block = block;
	}
	
	@Override
	public int numChildren() {
		return 3;
	}
	
	/**
	 * Children are: 
	 * 0 : Name 
	 * 1 : Type 
	 * 2 : Initializer
	 */
	@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;
		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);
		default:
			throw new NoSuchElementException("Node " + id() + " does not have a child with index " + index + ".");
		}
	}

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

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

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

}