FormalVariableDeclarationNode.java

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

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

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

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.FormalVariableDeclarationNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.declaration.FunctionDeclarationNodeIF;
import edu.udel.cis.vsl.tass.ast.IF.type.TypeNodeIF;

public class FormalVariableDeclarationNode extends VariableDeclarationNode
		implements FormalVariableDeclarationNodeIF {

	private FunctionDeclarationNodeIF function;

	public FormalVariableDeclarationNode(long id) {
		super(id);
	}
	
	public FormalVariableDeclarationNode(long id, IdentifierNodeIF identifier,
			TypeNodeIF type, FunctionDeclarationNodeIF function) {
		super(id, identifier, type);
		this.function = function;
	}

	@Override
	public FunctionDeclarationNodeIF function() {
		return function;
	}

	@Override
	public void setFunction(FunctionDeclarationNodeIF function) {
		this.function = function;
	}

	@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 at index "
											 + index + ".");
		}
	}

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

	@Override
	public void toXml(String prefix, PrintWriter out,AbstractSyntaxTreeIF ast) {
		super.toXml(prefix,out,ast);

		out.println(prefix+"<fvn:functionRef>"+function.id()+"</fvn:functionRef>");
	}
    
}