| /* |
| * Copyright (C) 2014 The Dagger Authors. |
| * |
| * 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 dagger.internal.codegen.binding; |
| |
| import static dagger.model.BindingKind.MEMBERS_INJECTOR; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.common.base.CaseFormat; |
| import com.squareup.javapoet.ClassName; |
| import com.squareup.javapoet.ParameterizedTypeName; |
| import com.squareup.javapoet.TypeName; |
| import java.util.Optional; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ElementVisitor; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.element.VariableElement; |
| import javax.lang.model.type.TypeMirror; |
| import javax.lang.model.util.ElementKindVisitor8; |
| |
| /** |
| * A value object that represents a field in the generated Component class. |
| * |
| * <p>Examples: |
| * |
| * <ul> |
| * <li>{@code Provider<String>} |
| * <li>{@code Producer<Widget>} |
| * <li>{@code Provider<Map<SomeMapKey, MapValue>>}. |
| * </ul> |
| */ |
| @AutoValue |
| public abstract class FrameworkField { |
| |
| /** |
| * Creates a framework field. |
| * |
| * @param frameworkClassName the name of the framework class (e.g., {@link javax.inject.Provider}) |
| * @param valueTypeName the name of the type parameter of the framework class (e.g., {@code Foo} |
| * for {@code Provider<Foo>} |
| * @param fieldName the name of the field |
| */ |
| public static FrameworkField create( |
| ClassName frameworkClassName, TypeName valueTypeName, String fieldName) { |
| String suffix = frameworkClassName.simpleName(); |
| return new AutoValue_FrameworkField( |
| ParameterizedTypeName.get(frameworkClassName, valueTypeName), |
| fieldName.endsWith(suffix) ? fieldName : fieldName + suffix); |
| } |
| |
| /** |
| * A framework field for a {@link ContributionBinding}. |
| * |
| * @param frameworkClass if present, the field will use this framework class instead of the normal |
| * one for the binding's type. |
| */ |
| public static FrameworkField forBinding( |
| ContributionBinding binding, Optional<ClassName> frameworkClass) { |
| return create( |
| frameworkClass.orElse( |
| ClassName.get( |
| FrameworkType.forBindingType(binding.bindingType()).frameworkClass())), |
| TypeName.get(fieldValueType(binding)), |
| frameworkFieldName(binding)); |
| } |
| |
| private static TypeMirror fieldValueType(ContributionBinding binding) { |
| return binding.contributionType().isMultibinding() |
| ? binding.contributedType() |
| : binding.key().type(); |
| } |
| |
| private static String frameworkFieldName(ContributionBinding binding) { |
| if (binding.bindingElement().isPresent()) { |
| String name = BINDING_ELEMENT_NAME.visit(binding.bindingElement().get(), binding); |
| return binding.kind().equals(MEMBERS_INJECTOR) ? name + "MembersInjector" : name; |
| } |
| return KeyVariableNamer.name(binding.key()); |
| } |
| |
| private static final ElementVisitor<String, Binding> BINDING_ELEMENT_NAME = |
| new ElementKindVisitor8<String, Binding>() { |
| |
| @Override |
| protected String defaultAction(Element e, Binding p) { |
| throw new IllegalArgumentException("Unexpected binding " + p); |
| } |
| |
| @Override |
| public String visitExecutableAsConstructor(ExecutableElement e, Binding p) { |
| return visit(e.getEnclosingElement(), p); |
| } |
| |
| @Override |
| public String visitExecutableAsMethod(ExecutableElement e, Binding p) { |
| return e.getSimpleName().toString(); |
| } |
| |
| @Override |
| public String visitType(TypeElement e, Binding p) { |
| return CaseFormat.UPPER_CAMEL.to(CaseFormat.LOWER_CAMEL, e.getSimpleName().toString()); |
| } |
| |
| @Override |
| public String visitVariableAsParameter(VariableElement e, Binding p) { |
| return e.getSimpleName().toString(); |
| } |
| }; |
| |
| public abstract ParameterizedTypeName type(); |
| |
| public abstract String name(); |
| } |