org.openrewrite.java.search.FindInheritedFields Maven / Gradle / Ivy
/*
* Copyright 2020 the original author or 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
*
* https://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 org.openrewrite.java.search;
import io.micrometer.core.instrument.Tag;
import io.micrometer.core.instrument.Tags;
import org.openrewrite.Tree;
import org.openrewrite.internal.lang.Nullable;
import org.openrewrite.java.AbstractJavaSourceVisitor;
import org.openrewrite.java.tree.Flag;
import org.openrewrite.java.tree.J;
import org.openrewrite.java.tree.JavaType;
import org.openrewrite.java.tree.TypeUtils;
import java.util.ArrayList;
import java.util.List;
import static java.util.Collections.emptyList;
public class FindInheritedFields extends AbstractJavaSourceVisitor> {
private final String fullyQualifiedClassName;
public FindInheritedFields(String fullyQualifiedClassName) {
this.fullyQualifiedClassName = fullyQualifiedClassName;
}
@Override
public Iterable getTags() {
return Tags.of("type", fullyQualifiedClassName);
}
@Override
public List defaultTo(Tree t) {
return emptyList();
}
private List superFields(@Nullable JavaType.Class type) {
if(type == null || type.getSupertype() == null) {
return emptyList();
}
List types = new ArrayList<>();
type.getMembers().stream()
.filter(m -> !m.hasFlags(Flag.Private) && TypeUtils.hasElementType(m.getType(), fullyQualifiedClassName))
.forEach(types::add);
types.addAll(superFields(type.getSupertype()));
return types;
}
@Override
public List visitClassDecl(J.ClassDecl classDecl) {
JavaType.Class asClass = TypeUtils.asClass(classDecl.getType());
return superFields(asClass == null ? null : asClass.getSupertype());
}
}