case-study/jdt-after/core refactoring/org/eclipse/jdt/internal/corext/refactoring/typeconstraints/types/VoidType.java

   1 /*******************************************************************************
   2  * Copyright (c) 2000, 2011 IBM Corporation and others.
   3  * All rights reserved. This program and the accompanying materials
   4  * are made available under the terms of the Eclipse Public License v1.0
   5  * which accompanies this distribution, and is available at
   6  * http://www.eclipse.org/legal/epl-v10.html
   7  *
   8  * Contributors:
   9  *     IBM Corporation - initial API and implementation
  10  *******************************************************************************/
  11 package org.eclipse.jdt.internal.corext.refactoring.typeconstraints.types;
  12
  13 import org.eclipse.jdt.core.Signature;
  14
  15
  16 public final class VoidType extends TType {
  17
  18         protected VoidType(TypeEnvironment environment) {
  19                 super(environment, Signature.createTypeSignature("void", true)); //$NON-NLS-1$
  20         }
  21
  22         @Override
  23         public int getKind() {
  24                 return VOID_TYPE;
  25         }
  26
  27         @Override
  28         public TType[] getSubTypes() {
  29                 throw new UnsupportedOperationException();
  30         }
  31
  32         @Override
  33         protected boolean doEquals(TType type) {
  34                 return true;
  35         }
  36
  37         @Override
  38         public int hashCode() {
  39                 return 12345;
  40         }
  41
  42         @Override
  43         protected boolean doCanAssignTo(TType lhs) {
  44                 return false;
  45         }
  46
  47         @Override
  48         public String getName() {
  49                 return "void"; //$NON-NLS-1$
  50         }
  51
  52         @Override
  53         protected String getPlainPrettySignature() {
  54                 return getName();
  55         }
  56 }