com.google.errorprone.bugpatterns.MissingRefasterAnnotation Maven / Gradle / Ivy
/*
* Copyright 2022 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;
import static com.google.errorprone.BugPattern.SeverityLevel.WARNING;
import static com.google.errorprone.BugPattern.StandardTags.LIKELY_ERROR;
import static com.google.errorprone.matchers.ChildMultiMatcher.MatchType.AT_LEAST_ONE;
import static com.google.errorprone.matchers.Matchers.annotations;
import static com.google.errorprone.matchers.Matchers.anyOf;
import static com.google.errorprone.matchers.Matchers.isType;
import com.google.errorprone.BugPattern;
import com.google.errorprone.VisitorState;
import com.google.errorprone.bugpatterns.BugChecker.ClassTreeMatcher;
import com.google.errorprone.matchers.Description;
import com.google.errorprone.matchers.MultiMatcher;
import com.google.errorprone.util.ASTHelpers;
import com.sun.source.tree.AnnotationTree;
import com.sun.source.tree.ClassTree;
import com.sun.source.tree.MethodTree;
import com.sun.source.tree.Tree;
/** A {@link BugChecker}; see the associated {@link BugPattern} annotation for details. */
@BugPattern(
summary = "The Refaster template contains a method without any Refaster annotations",
severity = WARNING,
tags = LIKELY_ERROR)
public final class MissingRefasterAnnotation extends BugChecker implements ClassTreeMatcher {
private static final MultiMatcher HAS_REFASTER_ANNOTATION =
annotations(
AT_LEAST_ONE,
anyOf(
isType("com.google.errorprone.refaster.annotation.Placeholder"),
isType("com.google.errorprone.refaster.annotation.BeforeTemplate"),
isType("com.google.errorprone.refaster.annotation.AfterTemplate")));
@Override
public Description matchClass(ClassTree tree, VisitorState state) {
long methodTypeCount =
tree.getMembers().stream()
.filter(member -> member.getKind() == Tree.Kind.METHOD)
.map(MethodTree.class::cast)
.filter(method -> !ASTHelpers.isGeneratedConstructor(method))
.map(method -> HAS_REFASTER_ANNOTATION.matches(method, state))
.distinct()
.count();
return methodTypeCount < 2 ? Description.NO_MATCH : describeMatch(tree);
}
}