1 // Copyright 2016 The Bazel Authors. All rights reserved. 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License.package com.google.devtools.build.lib.flags; 14 package com.google.devtools.common.options; 15 16 import com.google.common.collect.ImmutableSet; 17 18 /** Cache mapping a command to the names of all commands it inherits from, including itself. */ 19 @FunctionalInterface 20 public interface CommandNameCache { 21 /** Class that exists only to expose a static instance variable that can be set and retrieved. */ 22 class CommandNameCacheInstance implements CommandNameCache { 23 public static final CommandNameCacheInstance INSTANCE = new CommandNameCacheInstance(); 24 private CommandNameCache delegate; 25 26 private CommandNameCacheInstance() {} 27 28 /** Only for use by {@code BlazeRuntime}. */ 29 public void setCommandNameCache(CommandNameCache cache) { 30 // Can be set multiple times in tests. 31 this.delegate = cache; 32 } 33 34 @Override 35 public ImmutableSet<String> get(String commandName) { 36 return delegate.get(commandName); 37 } 38 } 39 40 /** Returns the names of all commands {@code commandName} inherits from, including itself. */ 41 ImmutableSet<String> get(String commandName); 42 } 43
