com.google.errorprone.bugpatterns.inject.AssistedInjectAndInjectOnSameConstructor Maven / Gradle / Ivy
/*
* Copyright 2013 The Error Prone 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 com.google.errorprone.bugpatterns.inject;
import static com.google.errorprone.BugPattern.SeverityLevel.WARNING;
import static com.google.errorprone.matchers.InjectMatchers.ASSISTED_INJECT_ANNOTATION;
import static com.google.errorprone.matchers.InjectMatchers.GUICE_INJECT_ANNOTATION;
import static com.google.errorprone.matchers.InjectMatchers.JAVAX_INJECT_ANNOTATION;
import static com.google.errorprone.matchers.InjectMatchers.hasInjectAnnotation;
import static com.google.errorprone.matchers.Matchers.anyOf;
import static com.google.errorprone.matchers.Matchers.hasAnnotation;
import static com.google.errorprone.matchers.Matchers.isType;
import com.google.errorprone.BugPattern;
import com.google.errorprone.VisitorState;
import com.google.errorprone.bugpatterns.BugChecker;
import com.google.errorprone.bugpatterns.BugChecker.AnnotationTreeMatcher;
import com.google.errorprone.fixes.SuggestedFix;
import com.google.errorprone.matchers.Description;
import com.google.errorprone.matchers.Matcher;
import com.google.errorprone.util.ASTHelpers;
import com.sun.source.tree.AnnotationTree;
import com.sun.source.tree.MethodTree;
import com.sun.source.tree.Tree;
/** @author [email protected] (Steven Goldfeder) */
@BugPattern(
name = "AssistedInjectAndInjectOnSameConstructor",
summary = "@AssistedInject and @Inject cannot be used on the same constructor.",
severity = WARNING)
public class AssistedInjectAndInjectOnSameConstructor extends BugChecker
implements AnnotationTreeMatcher {
/** Matches a method/constructor that is annotated with an @AssistedInject annotation. */
private static final Matcher HAS_ASSISTED_INJECT_MATCHER =
hasAnnotation(ASSISTED_INJECT_ANNOTATION);
/** Matches the @Inject and @Assisted inject annotations. */
private static final Matcher injectOrAssistedInjectMatcher =
anyOf(
isType(JAVAX_INJECT_ANNOTATION),
isType(GUICE_INJECT_ANNOTATION),
isType(ASSISTED_INJECT_ANNOTATION));
@Override
public Description matchAnnotation(AnnotationTree annotationTree, VisitorState state) {
if (injectOrAssistedInjectMatcher.matches(annotationTree, state)) {
Tree treeWithAnnotation = state.getPath().getParentPath().getParentPath().getLeaf();
if (ASTHelpers.getSymbol(treeWithAnnotation).isConstructor()
&& hasInjectAnnotation().matches(treeWithAnnotation, state)
&& HAS_ASSISTED_INJECT_MATCHER.matches((MethodTree) treeWithAnnotation, state)) {
return describeMatch(annotationTree, SuggestedFix.delete(annotationTree));
}
}
return Description.NO_MATCH;
}
}