1 /* 2 * Copyright (C) 2018 The Dagger Authors. 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 dagger.internal.codegen.writing; 18 19 import static com.google.common.base.Preconditions.checkNotNull; 20 21 import com.squareup.javapoet.CodeBlock; 22 import dagger.internal.InstanceFactory; 23 import dagger.internal.codegen.writing.FrameworkFieldInitializer.FrameworkInstanceCreationExpression; 24 import java.util.function.Supplier; 25 26 /** 27 * A {@link FrameworkInstanceCreationExpression} that creates an {@link InstanceFactory} for an 28 * instance. 29 */ 30 final class InstanceFactoryCreationExpression implements FrameworkInstanceCreationExpression { 31 32 private final boolean nullable; 33 private final Supplier<CodeBlock> instanceExpression; 34 InstanceFactoryCreationExpression(Supplier<CodeBlock> instanceExpression)35 InstanceFactoryCreationExpression(Supplier<CodeBlock> instanceExpression) { 36 this(false, instanceExpression); 37 } 38 InstanceFactoryCreationExpression(boolean nullable, Supplier<CodeBlock> instanceExpression)39 InstanceFactoryCreationExpression(boolean nullable, Supplier<CodeBlock> instanceExpression) { 40 this.nullable = nullable; 41 this.instanceExpression = checkNotNull(instanceExpression); 42 } 43 44 @Override creationExpression()45 public CodeBlock creationExpression() { 46 return CodeBlock.of( 47 "$T.$L($L)", 48 InstanceFactory.class, 49 nullable ? "createNullable" : "create", 50 instanceExpression.get()); 51 } 52 53 @Override useInnerSwitchingProvider()54 public boolean useInnerSwitchingProvider() { 55 return false; 56 } 57 } 58