| /** |
| * Copyright (C) 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.inject; |
| |
| import com.google.inject.commands.AddMessageCommand; |
| import com.google.inject.commands.BindCommand; |
| import com.google.inject.commands.BindConstantCommand; |
| import com.google.inject.commands.BindInterceptorCommand; |
| import com.google.inject.commands.BindScopeCommand; |
| import com.google.inject.commands.Command; |
| import com.google.inject.commands.ConvertToTypesCommand; |
| import com.google.inject.commands.GetProviderCommand; |
| import com.google.inject.commands.RequestInjectionCommand; |
| import com.google.inject.commands.RequestStaticInjectionCommand; |
| import com.google.inject.internal.Errors; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * Abstract base class for executing commands to creating an injector. |
| * |
| * <p>Extending classes must return {@code true} from any overridden |
| * {@code visit*()} methods, in order for the command processor to remove the |
| * handled command. |
| * |
| * @author jessewilson@google.com (Jesse Wilson) |
| */ |
| abstract class CommandProcessor implements Command.Visitor<Boolean> { |
| |
| protected Errors errors; |
| |
| protected CommandProcessor(Errors errors) { |
| this.errors = errors; |
| } |
| |
| public void processCommands(List<Command> commands) { |
| Errors errorsAnyCommand = this.errors; |
| try { |
| for (Iterator<Command> i = commands.iterator(); i.hasNext(); ) { |
| Command command = i.next(); |
| this.errors = errorsAnyCommand.withSource(command.getSource()); |
| Boolean allDone = command.acceptVisitor(this); |
| if (allDone) { |
| i.remove(); |
| } |
| } |
| } finally { |
| this.errors = errorsAnyCommand; |
| } |
| } |
| |
| public Boolean visitAddMessage(AddMessageCommand command) { |
| return false; |
| } |
| |
| public Boolean visitBindInterceptor(BindInterceptorCommand command) { |
| return false; |
| } |
| |
| public Boolean visitBindScope(BindScopeCommand command) { |
| return false; |
| } |
| |
| public Boolean visitRequestInjection(RequestInjectionCommand command) { |
| return false; |
| } |
| |
| public Boolean visitRequestStaticInjection(RequestStaticInjectionCommand command) { |
| return false; |
| } |
| |
| public Boolean visitBindConstant(BindConstantCommand command) { |
| return false; |
| } |
| |
| public Boolean visitConvertToTypes(ConvertToTypesCommand command) { |
| return false; |
| } |
| |
| public <T> Boolean visitBind(BindCommand<T> command) { |
| return false; |
| } |
| |
| public <T> Boolean visitGetProvider(GetProviderCommand<T> command) { |
| return false; |
| } |
| } |