1 /** 2 * Copyright (C) 2006 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.inject.internal; 18 19 import static com.google.common.base.Preconditions.checkNotNull; 20 21 import com.google.inject.Provider; 22 import com.google.inject.spi.Dependency; 23 24 /** 25 * @author crazybob (at) google.com (Bob Lee) 26 */ 27 final class InternalFactoryToProviderAdapter<T> implements InternalFactory<T> { 28 29 private final Provider<? extends T> provider; 30 private final Object source; 31 32 public InternalFactoryToProviderAdapter(Provider<? extends T> provider, Object source) { 33 this.provider = checkNotNull(provider, "provider"); 34 this.source = checkNotNull(source, "source"); 35 } 36 37 public T get(Errors errors, InternalContext context, Dependency<?> dependency, boolean linked) 38 throws ErrorsException { 39 // TODO(sameb): Does this need to push state into the context? 40 try { 41 return errors.checkForNull(provider.get(), source, dependency); 42 } catch (RuntimeException userException) { 43 throw errors.withSource(source).errorInProvider(userException).toException(); 44 } 45 } 46 47 @Override public String toString() { 48 return provider.toString(); 49 } 50 } 51
