| /** |
| * Copyright (C) 2006 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.inject.spi; |
| |
| /** |
| * Support for classes which use source objects. |
| * |
| * @author crazybob@google.com (Bob Lee) |
| */ |
| public class SourceConsumer { |
| |
| SourceProvider sourceProvider = new DefaultSourceProvider(); |
| |
| /** |
| * Returns the current source. |
| */ |
| protected Object source() { |
| return sourceProvider.source(); |
| } |
| |
| /** |
| * Gets the current source provider. |
| */ |
| public SourceProvider getSourceProvider() { |
| return sourceProvider; |
| } |
| |
| /** |
| * Sets the current source provider. |
| */ |
| public void setSourceProvider(SourceProvider sourceProvider) { |
| this.sourceProvider = sourceProvider; |
| } |
| |
| /** |
| * Sets the source provider, runs the given command, and restores the |
| * previous source provider. |
| */ |
| public void withSourceProvider(SourceProvider sourceProvider, Runnable r) { |
| SourceProvider previous = this.sourceProvider; |
| try { |
| this.sourceProvider = sourceProvider; |
| r.run(); |
| } finally { |
| this.sourceProvider = previous; |
| } |
| } |
| } |