org.openrewrite.xml.RemoveContentVisitor Maven / Gradle / Ivy
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/*
* 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.xml;
import org.openrewrite.xml.tree.Content;
import org.openrewrite.xml.tree.Xml;
import java.util.ArrayList;
import java.util.List;
public class RemoveContentVisitor
extends XmlVisitor
{
private final Content scope;
private final boolean removeEmptyAncestors;
public RemoveContentVisitor(Content tag, boolean removeEmptyAncestors) {
this.scope = tag;
this.removeEmptyAncestors = removeEmptyAncestors;
}
@Override
public Xml visitTag(Xml.Tag tag, P p) {
Xml.Tag t = (Xml.Tag) super.visitTag(tag, p);
if (t.getContent() != null) {
for (Content content : t.getContent()) {
if (scope.isScope(content)) {
List contents = new ArrayList<>(t.getContent());
contents.remove(content);
if (removeEmptyAncestors && contents.isEmpty() && t.getAttributes().isEmpty()) {
if (getCursor().getParentOrThrow().getValue() instanceof Xml.Document) {
return t.withContent(null).withClosing(null);
} else {
doAfterVisit(new RemoveContentVisitor<>(t, true));
}
} else {
return t.withContent(contents);
}
}
}
}
return t;
}
}