1 /* 2 * Copyright (C) 2014 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.componentgenerator; 18 19 import static dagger.internal.codegen.extension.DaggerStreams.toImmutableList; 20 21 import com.google.auto.common.MoreTypes; 22 import com.google.auto.value.AutoValue; 23 import com.google.common.base.Equivalence; 24 import com.google.common.collect.ImmutableList; 25 import dagger.internal.codegen.binding.ComponentDescriptor.ComponentMethodDescriptor; 26 import dagger.internal.codegen.langmodel.DaggerTypes; 27 import java.util.List; 28 import javax.lang.model.type.DeclaredType; 29 import javax.lang.model.type.ExecutableType; 30 import javax.lang.model.type.TypeMirror; 31 32 /** A class that defines proper {@code equals} and {@code hashcode} for a method signature. */ 33 @AutoValue 34 abstract class MethodSignature { 35 name()36 abstract String name(); 37 parameterTypes()38 abstract ImmutableList<? extends Equivalence.Wrapper<? extends TypeMirror>> parameterTypes(); 39 thrownTypes()40 abstract ImmutableList<? extends Equivalence.Wrapper<? extends TypeMirror>> thrownTypes(); 41 forComponentMethod( ComponentMethodDescriptor componentMethod, DeclaredType componentType, DaggerTypes types)42 static MethodSignature forComponentMethod( 43 ComponentMethodDescriptor componentMethod, DeclaredType componentType, DaggerTypes types) { 44 ExecutableType methodType = 45 MoreTypes.asExecutable(types.asMemberOf(componentType, componentMethod.methodElement())); 46 return new AutoValue_MethodSignature( 47 componentMethod.methodElement().getSimpleName().toString(), 48 wrapInEquivalence(methodType.getParameterTypes()), 49 wrapInEquivalence(methodType.getThrownTypes())); 50 } 51 52 private static ImmutableList<? extends Equivalence.Wrapper<? extends TypeMirror>> wrapInEquivalence(List<? extends TypeMirror> types)53 wrapInEquivalence(List<? extends TypeMirror> types) { 54 return types.stream().map(MoreTypes.equivalence()::wrap).collect(toImmutableList()); 55 } 56 } 57