/*
* Copyright 2014 Lukas Krejci
*
* 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 org.revapi.java.checks.fields;
import java.util.Collections;
import java.util.EnumSet;
import java.util.List;
import java.util.Objects;
import org.revapi.Difference;
import org.revapi.java.spi.Code;
import org.revapi.java.spi.JavaFieldElement;
/**
* @author Lukas Krejci
* @since 0.1
*/
public final class NoLongerConstant extends BothFieldsRequiringCheck {
@Override
public EnumSet<Type> getInterest() {
return EnumSet.of(Type.FIELD);
}
@Override
protected void doVisitField(JavaFieldElement oldField, JavaFieldElement newField) {
if (!shouldCheck(oldField, newField)) {
return;
}
if (oldField.getDeclaringElement().getConstantValue() != null
&& newField.getDeclaringElement().getConstantValue() == null) {
pushActive(oldField, newField);
}
}
@Override
protected List<Difference> doEnd() {
ActiveElements<JavaFieldElement> fields = popIfActive();
if (fields == null) {
return null;
}
return Collections.singletonList(
createDifference(Code.FIELD_NO_LONGER_CONSTANT,
Code.attachmentsFor(fields.oldElement, fields.newElement,
"value", Objects.toString(fields.oldElement.getDeclaringElement().getConstantValue()))));
}
}