| /* |
| * Copyright 2008 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.dev.jjs.impl.gflow.unreachable; |
| |
| import com.google.gwt.dev.jjs.impl.gflow.Assumption; |
| |
| /** |
| * |
| */ |
| public class UnreachableAssumptions implements Assumption<UnreachableAssumptions> { |
| public static final UnreachableAssumptions REACHABLE = new UnreachableAssumptions(); |
| public static final UnreachableAssumptions UNREACHABLE = new UnreachableAssumptions(); |
| |
| public static boolean isReachable(UnreachableAssumptions in) { |
| return in == REACHABLE; |
| } |
| |
| public UnreachableAssumptions join(UnreachableAssumptions value) { |
| if (this == REACHABLE || value == REACHABLE) { |
| return REACHABLE; |
| } |
| return UNREACHABLE; |
| } |
| |
| @Override |
| public String toString() { |
| return this == REACHABLE ? "T" : "F"; |
| } |
| } |