/*******************************************************************************
* 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.AbstractVisitor;
/**
* Utilities used for Ast nodes
* @author Eden
*
*/
@SuppressWarnings("rawtypes")
public class ASTNodes {
public static ASTNode getParent(ASTNode node, Class parentClass) {
if (node == null)
return null;
do {
node= node.getParent();
} while (node != null && !parentClass.isInstance(node));
return node;
}
public static ASTNode getParent(ASTNode node, int nodeType) {
if (node == null)
return null;
do {
node= node.getParent();
} while (node != null && node.getType() != nodeType);
return node;
}
/**
* @param node
* @return whether the given node is the only statement of a control statement
*/
public static boolean isControlStatement(ASTNode node) {
assert node != null;
int type = node.getType();
return (type == ASTNode.IF_STATEMENT
|| type == ASTNode.FOR_STATEMENT
|| type == ASTNode.FOR_EACH_STATEMENT
|| type == ASTNode.WHILE_STATEMENT
|| type == ASTNode.DO_STATEMENT
);
}
/**
* Aggregates the strings for a given node
* @param node
* @return the aggregated strings for a given node
*/
public static String getScalars(ASTNode node) {
final StringBuilder builder = new StringBuilder();
node.accept(new AbstractVisitor() {
@Override
public boolean visit(Scalar scalar) {
builder.append(scalar.getStringValue());
return true;
}
});
return builder.toString();
}
}