71 lines
2.5 KiB
Java
71 lines
2.5 KiB
Java
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/*
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* Copyright (C) 2016 The Dagger Authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package dagger.internal.codegen.validation;
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import static dagger.internal.codegen.xprocessing.XTypes.isDeclared;
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import static dagger.internal.codegen.xprocessing.XTypes.isTypeVariable;
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import androidx.room.compiler.processing.XExecutableParameterElement;
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import androidx.room.compiler.processing.XMethodElement;
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import androidx.room.compiler.processing.XType;
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import dagger.internal.codegen.binding.InjectionAnnotations;
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import java.util.Optional;
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import javax.inject.Inject;
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final class BindsInstanceParameterValidator
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extends BindsInstanceElementValidator<XExecutableParameterElement> {
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@Inject
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BindsInstanceParameterValidator(InjectionAnnotations injectionAnnotations) {
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super(injectionAnnotations);
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}
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@Override
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protected ElementValidator elementValidator(XExecutableParameterElement parameter) {
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return new Validator(parameter);
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}
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private class Validator extends ElementValidator {
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private final XExecutableParameterElement parameter;
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Validator(XExecutableParameterElement parameter) {
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super(parameter);
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this.parameter = parameter;
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}
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@Override
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protected void checkAdditionalProperties() {
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if (!parameter.getEnclosingMethodElement().isAbstract()) {
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report.addError("@BindsInstance parameters may only be used in abstract methods");
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}
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// The above check should rule out constructors since constructors cannot be abstract, so we
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// know the XExecutableElement enclosing the parameter has to be an XMethodElement.
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XMethodElement method = (XMethodElement) parameter.getEnclosingMethodElement();
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if (!(isDeclared(method.getReturnType()) || isTypeVariable(method.getReturnType()))) {
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report.addError(
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"@BindsInstance parameters may not be used in methods with a void, array or primitive "
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+ "return type");
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}
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}
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@Override
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protected Optional<XType> bindingElementType() {
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return Optional.of(parameter.getType());
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}
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}
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}
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