content: /*******************************************************************************
   * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
   * 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:
   *    Evgeny Mandrikov - initial API and implementation
   *
   *******************************************************************************/
  package org.jacoco.core.internal.analysis.filter;
  
  import org.objectweb.asm.tree.MethodNode;
  
  /**
   * Filters methods <code>values</code> and <code>valueOf</code> that compiler
   * creates for enums.
   */
  public final class EnumFilter implements IFilter {
  
  	public void filter(final MethodNode methodNode,
  			final IFilterContext context, final IFilterOutput output) {
  		if (isMethodFiltered(context.getClassName(),
  				context.getSuperClassName(), methodNode.name,
  				methodNode.desc)) {
  			output.ignore(methodNode.instructions.getFirst(),
  					methodNode.instructions.getLast());
  		}
  	}
  
  	private boolean isMethodFiltered(final String className,
  			final String superClassName, final String methodName,
  			final String methodDesc) {
  		if ("java/lang/Enum".equals(superClassName)) {
  			if ("values".equals(methodName)
  					&& ("()[L" + className + ";").equals(methodDesc)) {
  				return true;
  			}
  			if ("valueOf".equals(methodName)
  					&& ("(Ljava/lang/String;)L" + className + ";")
  							.equals(methodDesc)) {
  				return true;
  			}
  		}
  		return false;
  	}
  
  }
  