| /* |
| * Copyright (C) 2016 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.validation; |
| |
| import static javax.lang.model.element.ElementKind.METHOD; |
| import static javax.lang.model.element.Modifier.ABSTRACT; |
| import static javax.lang.model.type.TypeKind.DECLARED; |
| import static javax.lang.model.type.TypeKind.TYPEVAR; |
| |
| import com.google.auto.common.MoreElements; |
| import dagger.internal.codegen.binding.InjectionAnnotations; |
| import java.util.Optional; |
| import javax.inject.Inject; |
| import javax.lang.model.element.Element; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.element.VariableElement; |
| import javax.lang.model.type.TypeKind; |
| import javax.lang.model.type.TypeMirror; |
| |
| final class BindsInstanceParameterValidator extends BindsInstanceElementValidator<VariableElement> { |
| @Inject |
| BindsInstanceParameterValidator(InjectionAnnotations injectionAnnotations) { |
| super(injectionAnnotations); |
| } |
| |
| @Override |
| protected ElementValidator elementValidator(VariableElement element) { |
| return new Validator(element); |
| } |
| |
| private class Validator extends ElementValidator { |
| Validator(VariableElement element) { |
| super(element); |
| } |
| |
| @Override |
| protected void checkAdditionalProperties() { |
| Element enclosing = element.getEnclosingElement(); |
| if (!enclosing.getKind().equals(METHOD)) { |
| report.addError( |
| "@BindsInstance should only be applied to methods or parameters of methods"); |
| return; |
| } |
| |
| ExecutableElement method = MoreElements.asExecutable(enclosing); |
| if (!method.getModifiers().contains(ABSTRACT)) { |
| report.addError("@BindsInstance parameters may only be used in abstract methods"); |
| } |
| |
| TypeKind returnKind = method.getReturnType().getKind(); |
| if (!(returnKind.equals(DECLARED) || returnKind.equals(TYPEVAR))) { |
| report.addError( |
| "@BindsInstance parameters may not be used in methods with a void, array or primitive " |
| + "return type"); |
| } |
| } |
| |
| @Override |
| protected Optional<TypeMirror> bindingElementType() { |
| return Optional.of(element.asType()); |
| } |
| } |
| } |