1 /* 2 * Copyright (C) 2016 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.grpc.server.processor; 18 19 import com.squareup.javapoet.AnnotationSpec; 20 import com.squareup.javapoet.ClassName; 21 import com.squareup.javapoet.JavaFile; 22 import com.squareup.javapoet.TypeSpec; 23 24 /** 25 * An object that generates one top-level type. 26 */ 27 abstract class SourceGenerator { 28 29 private final String packageName; 30 SourceGenerator(String packageName)31 protected SourceGenerator(String packageName) { 32 this.packageName = packageName; 33 } 34 javaFile()35 public JavaFile javaFile() { 36 return JavaFile.builder(packageName, createType()).build(); 37 } 38 39 /** 40 * Creates the type to write. 41 */ createType()42 protected abstract TypeSpec createType(); 43 44 /** Class names and annotation specs for types in the {@link dagger} package. */ 45 protected static final class Dagger { Dagger()46 private Dagger() {} 47 binds()48 static AnnotationSpec binds() { 49 return AnnotationSpec.builder(ClassName.get("dagger", "Binds")).build(); 50 } 51 intoSet()52 static AnnotationSpec intoSet() { 53 return AnnotationSpec.builder(ClassName.get("dagger.multibindings", "IntoSet")).build(); 54 } 55 provides()56 static AnnotationSpec provides() { 57 return AnnotationSpec.builder(ClassName.get("dagger", "Provides")).build(); 58 } 59 60 /** A {@code @dagger.Module} annotation that includes the given module classes. */ module(ClassName... includedModules)61 static AnnotationSpec module(ClassName... includedModules) { 62 AnnotationSpec.Builder module = AnnotationSpec.builder(ClassName.get("dagger", "Module")); 63 for (ClassName includedModule : includedModules) { 64 module.addMember("includes", "$T.class", includedModule); 65 } 66 return module.build(); 67 } 68 69 /** Class names and annotation specs for types in the {@link dagger.grpc} package. */ 70 protected static final class GrpcServer { GrpcServer()71 private GrpcServer() {} 72 73 static final ClassName PROXY_SERVER_CALL_HANDLER = 74 ClassName.get("dagger.grpc.server", "ProxyServerCallHandler"); 75 76 static final ClassName GRPC_CALL_METADATA_MODULE = 77 ClassName.get("dagger.grpc.server", "GrpcCallMetadataModule"); 78 79 static final ClassName SERVICE_DEFINITION_FACTORY = 80 PROXY_SERVER_CALL_HANDLER.nestedClass("ServiceDefinitionFactory"); 81 } 82 } 83 84 /** Class names and annotation specs for types in the {@link io.grpc} package. */ 85 protected static final class IoGrpc { IoGrpc()86 private IoGrpc() {} 87 88 static final ClassName BINDABLE_SERVICE = ClassName.get("io.grpc", "BindableService"); 89 static final ClassName METADATA = ClassName.get("io.grpc", "Metadata"); 90 static final ClassName METHOD_DESCRIPTOR = ClassName.get("io.grpc", "MethodDescriptor"); 91 static final ClassName SERVER_INTERCEPTOR = 92 ClassName.get("io.grpc", "ServerInterceptor"); 93 static final ClassName SERVER_INTERCEPTORS = 94 ClassName.get("io.grpc", "ServerInterceptors"); 95 static final ClassName SERVER_SERVICE_DEFINITION = 96 ClassName.get("io.grpc", "ServerServiceDefinition"); 97 } 98 99 /** Class names and annotation specs for types in the {@link javax.inject} package. */ 100 protected static final class JavaxInject { JavaxInject()101 private JavaxInject() {} 102 inject()103 static AnnotationSpec inject() { 104 return AnnotationSpec.builder(ClassName.get("javax.inject", "Inject")).build(); 105 } 106 singleton()107 static AnnotationSpec singleton() { 108 return AnnotationSpec.builder(ClassName.get("javax.inject", "Singleton")).build(); 109 } 110 } 111 } 112