1 /* 2 * Copyright (C) 2014 Google, Inc. 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 package dagger.internal.codegen; 17 18 import com.google.common.collect.ImmutableSet; 19 import java.util.Set; 20 import javax.inject.Inject; 21 import javax.lang.model.element.AnnotationMirror; 22 import javax.lang.model.element.Modifier; 23 import javax.lang.model.element.VariableElement; 24 import javax.tools.Diagnostic.Kind; 25 26 import static dagger.internal.codegen.ErrorMessages.FINAL_INJECT_FIELD; 27 import static dagger.internal.codegen.ErrorMessages.MULTIPLE_QUALIFIERS; 28 import static dagger.internal.codegen.ErrorMessages.PRIVATE_INJECT_FIELD; 29 import static dagger.internal.codegen.ErrorMessages.STATIC_INJECT_FIELD; 30 import static dagger.internal.codegen.InjectionAnnotations.getQualifiers; 31 import static javax.lang.model.element.Modifier.FINAL; 32 import static javax.lang.model.element.Modifier.PRIVATE; 33 import static javax.lang.model.element.Modifier.STATIC; 34 35 /** 36 * A {@linkplain ValidationReport validator} for {@link Inject} fields. 37 * 38 * @author Gregory Kick 39 * @since 2.0 40 */ 41 final class InjectFieldValidator { 42 private Kind privateMemberValidationKind; 43 private Kind staticMemberValidationKind; 44 45 public InjectFieldValidator( 46 Kind privateMemberValidationKind, Kind staticMemberValidationKind) { 47 this.privateMemberValidationKind = privateMemberValidationKind; 48 this.staticMemberValidationKind = staticMemberValidationKind; 49 } 50 51 ValidationReport<VariableElement> validate(VariableElement fieldElement) { 52 ValidationReport.Builder<VariableElement> builder = ValidationReport.about(fieldElement); 53 Set<Modifier> modifiers = fieldElement.getModifiers(); 54 if (modifiers.contains(FINAL)) { 55 builder.addError(FINAL_INJECT_FIELD, fieldElement); 56 } 57 58 if (modifiers.contains(PRIVATE)) { 59 builder.addItem(PRIVATE_INJECT_FIELD, privateMemberValidationKind, fieldElement); 60 } 61 62 if (modifiers.contains(STATIC)) { 63 builder.addItem(STATIC_INJECT_FIELD, staticMemberValidationKind, fieldElement); 64 } 65 66 ImmutableSet<? extends AnnotationMirror> qualifiers = getQualifiers(fieldElement); 67 if (qualifiers.size() > 1) { 68 for (AnnotationMirror qualifier : qualifiers) { 69 builder.addError(MULTIPLE_QUALIFIERS, fieldElement, qualifier); 70 } 71 } 72 73 return builder.build(); 74 } 75 } 76
