| /* |
| * 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 com.google.common.base.Preconditions.checkState; |
| import static dagger.internal.codegen.base.DiagnosticFormatting.stripCommonTypePrefixes; |
| |
| import com.google.auto.common.MoreElements; |
| import com.google.auto.common.MoreTypes; |
| import dagger.internal.codegen.base.Formatter; |
| import dagger.internal.codegen.langmodel.DaggerTypes; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Optional; |
| import javax.inject.Inject; |
| import javax.lang.model.element.AnnotationMirror; |
| import javax.lang.model.element.ExecutableElement; |
| import javax.lang.model.element.TypeElement; |
| import javax.lang.model.element.VariableElement; |
| import javax.lang.model.type.DeclaredType; |
| import javax.lang.model.type.ExecutableType; |
| import javax.lang.model.type.TypeMirror; |
| |
| /** Formats the signature of an {@link ExecutableElement} suitable for use in error messages. */ |
| public final class MethodSignatureFormatter extends Formatter<ExecutableElement> { |
| private final DaggerTypes types; |
| private final InjectionAnnotations injectionAnnotations; |
| |
| @Inject |
| public MethodSignatureFormatter(DaggerTypes types, InjectionAnnotations injectionAnnotations) { |
| this.types = types; |
| this.injectionAnnotations = injectionAnnotations; |
| } |
| |
| /** |
| * A formatter that uses the type where the method is declared for the annotations and name of the |
| * method, but the method's resolved type as a member of {@code declaredType} for the key. |
| */ |
| public Formatter<ExecutableElement> typedFormatter(DeclaredType declaredType) { |
| return new Formatter<ExecutableElement>() { |
| @Override |
| public String format(ExecutableElement method) { |
| return MethodSignatureFormatter.this.format( |
| method, |
| MoreTypes.asExecutable(types.asMemberOf(declaredType, method)), |
| MoreElements.asType(method.getEnclosingElement())); |
| } |
| }; |
| } |
| |
| @Override |
| public String format(ExecutableElement method) { |
| return format(method, Optional.empty()); |
| } |
| |
| /** |
| * Formats an ExecutableElement as if it were contained within the container, if the container is |
| * present. |
| */ |
| public String format(ExecutableElement method, Optional<DeclaredType> container) { |
| TypeElement type = MoreElements.asType(method.getEnclosingElement()); |
| ExecutableType executableType = MoreTypes.asExecutable(method.asType()); |
| if (container.isPresent()) { |
| executableType = MoreTypes.asExecutable(types.asMemberOf(container.get(), method)); |
| type = MoreElements.asType(container.get().asElement()); |
| } |
| return format(method, executableType, type); |
| } |
| |
| private String format( |
| ExecutableElement method, ExecutableType methodType, TypeElement declaringType) { |
| StringBuilder builder = new StringBuilder(); |
| // TODO(user): AnnotationMirror formatter. |
| List<? extends AnnotationMirror> annotations = method.getAnnotationMirrors(); |
| if (!annotations.isEmpty()) { |
| Iterator<? extends AnnotationMirror> annotationIterator = annotations.iterator(); |
| for (int i = 0; annotationIterator.hasNext(); i++) { |
| if (i > 0) { |
| builder.append(' '); |
| } |
| builder.append(formatAnnotation(annotationIterator.next())); |
| } |
| builder.append(' '); |
| } |
| if (method.getSimpleName().contentEquals("<init>")) { |
| builder.append(declaringType.getQualifiedName()); |
| } else { |
| builder |
| .append(nameOfType(methodType.getReturnType())) |
| .append(' ') |
| .append(declaringType.getQualifiedName()) |
| .append('.') |
| .append(method.getSimpleName()); |
| } |
| builder.append('('); |
| checkState(method.getParameters().size() == methodType.getParameterTypes().size()); |
| Iterator<? extends VariableElement> parameters = method.getParameters().iterator(); |
| Iterator<? extends TypeMirror> parameterTypes = methodType.getParameterTypes().iterator(); |
| for (int i = 0; parameters.hasNext(); i++) { |
| if (i > 0) { |
| builder.append(", "); |
| } |
| appendParameter(builder, parameters.next(), parameterTypes.next()); |
| } |
| builder.append(')'); |
| return builder.toString(); |
| } |
| |
| private void appendParameter(StringBuilder builder, VariableElement parameter, TypeMirror type) { |
| injectionAnnotations |
| .getQualifier(parameter) |
| .ifPresent( |
| qualifier -> { |
| builder.append(formatAnnotation(qualifier)).append(' '); |
| }); |
| builder.append(nameOfType(type)); |
| } |
| |
| private static String nameOfType(TypeMirror type) { |
| return stripCommonTypePrefixes(type.toString()); |
| } |
| |
| private static String formatAnnotation(AnnotationMirror annotation) { |
| return stripCommonTypePrefixes(annotation.toString()); |
| } |
| } |