/*******************************************************************************
 * Copyright (c) 2009 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *     Zend Technologies
 *******************************************************************************/
package org.eclipse.php.core.compiler.ast.nodes;

import org.eclipse.dltk.ast.ASTVisitor;
import org.eclipse.dltk.ast.expressions.Expression;

public class ReflectionArrayVariableReference extends ReflectionVariableReference {

	public static final int VARIABLE_ARRAY = 1;
	public static final int VARIABLE_HASHTABLE = 2;

	/**
	 * In case of array / hashtable variable, the index expression is added
	 */
	private final Expression index;
	private final int arrayType;

	public ReflectionArrayVariableReference(int start, int end, Expression name, Expression index, int arrayType) {
		super(start, end, name);
		this.index = index;
		this.arrayType = arrayType;
	}

	public static String getArrayType(int type) {
		switch (type) {
		case VARIABLE_ARRAY:
			return "array"; //$NON-NLS-1$
		case VARIABLE_HASHTABLE:
			return "hashtable"; //$NON-NLS-1$
		default:
			throw new IllegalArgumentException();
		}
	}

	public Expression getIndex() {
		return index;
	}

	public int getArrayType() {
		return arrayType;
	}

	public int getKind() {
		return ASTNodeKinds.REFLECTION_ARRAY_ACCESS;
	}

	public void traverse(ASTVisitor visitor) throws Exception {
		final boolean visit = visitor.visit(this);
		if (visit) {
			getExpression().traverse(visitor);
			if (index != null) {
				index.traverse(visitor);
			}
		}
		visitor.endvisit(this);
	}
}