content: /*******************************************************************************
   * Copyright (c) 2000, 2007 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.refactoring.code.flow;
  
  class SwitchFlowInfo extends FlowInfo {
  	private GenericConditionalFlowInfo fCases;
  	private boolean fHasNullCaseInfo;
  	
  	public SwitchFlowInfo() {
  		fCases= new GenericConditionalFlowInfo();
  	}
  	
  	public void mergeTest(FlowInfo info, FlowContext context) {
  		if (info == null)
  			return;
  		mergeSequential(info, context);
  	}
  	
  	public void mergeCase(FlowInfo info, FlowContext context) {
  		if (info == null) {
  			fHasNullCaseInfo= true;
  			return;
  		}
  		fCases.mergeConditional(info, context);
  	}
  	
  	public void mergeDefault(boolean defaultCaseExists, FlowContext context) {
  		if (!defaultCaseExists || fHasNullCaseInfo)
  			fCases.mergeEmptyCondition(context);
  		mergeSequential(fCases, context);
  	}
  }
  
  