content: /*******************************************************************************
   * Copyright (c) 2000, 2008 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
   *******************************************************************************/
  package org.eclipse.wst.jsdt.internal.corext.dom.fragments;
  
  import java.util.HashSet;
  import java.util.Set;
  
  import org.eclipse.wst.jsdt.core.dom.ASTNode;
  import org.eclipse.wst.jsdt.core.dom.JSdoc;
  import org.eclipse.wst.jsdt.internal.corext.dom.GenericVisitor;
  
  class ASTMatchingFragmentFinder extends GenericVisitor {
  
  	public static IASTFragment[] findMatchingFragments(ASTNode scope, ASTFragment toMatch) {
  		return new ASTMatchingFragmentFinder(toMatch).findMatches(scope);
  	}
  
  	private ASTFragment fFragmentToMatch;
  	private Set fMatches= new HashSet();
  
  	private ASTMatchingFragmentFinder(ASTFragment toMatch) {
  		super(true);
  		fFragmentToMatch= toMatch;	
  	}
  	private IASTFragment[] findMatches(ASTNode scope) {
  		fMatches.clear();
  		scope.accept(this);
  		return getMatches();
  	}
  	private IASTFragment[] getMatches() {
  		return (IASTFragment[]) fMatches.toArray(new IASTFragment[fMatches.size()]);
  	}
  	
  	public boolean visit(JSdoc node) {
  		return false;
  	}
  	
  	protected boolean visitNode(ASTNode node) {
  		IASTFragment[] localMatches= fFragmentToMatch.getMatchingFragmentsWithNode(node);
  		for(int i= 0; i < localMatches.length; i++) {
  			fMatches.add(localMatches[i]);	
  		}
  		return true;
  	}
  
  }
  