/*******************************************************************************
* 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 org2.eclipse.php.internal.core.ast.nodes;
import org2.eclipse.php.internal.core.ast.visitor.Visitor;
/**
* Supporting the visitor pattern to the Abstract Syntax Tree (AST) nodes
*/
public interface Visitable {
public static final String TAB = "\t"; //$NON-NLS-1$
/**
* Visit only the actual node
* @param visitor
*/
public void accept(Visitor visitor);
/**
* Visit the children of the actual node (without visiting the actual)
* @param visitor
*/
public void childrenAccept(Visitor visitor);
/**
* Visit the actual node then go down to visit the children nodes
* @param visitor
*/
public void traverseTopDown(Visitor visitor);
/**
* Visit the children nodes then go up to the actual node
* @param visitor
*/
public void traverseBottomUp(Visitor visitor);
/**
* Buffers the actual node information
* @param buffer - buffer to write the content to
* @param tab - indentation
*/
public void toString(StringBuffer buffer, String tab);
}