CheckInheritanceChanges.java

/*
 * Copyright 2011 William Bernardet
 *
 * 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.googlecode.japi.checker.rules;

import com.googlecode.japi.checker.Reporter;
import com.googlecode.japi.checker.Rule;
import com.googlecode.japi.checker.Severity;
import com.googlecode.japi.checker.Reporter.Report;
import com.googlecode.japi.checker.model.ClassData;
import com.googlecode.japi.checker.model.JavaItem;

public class CheckInheritanceChanges implements Rule {

    @Override
    public void checkBackwardCompatibility(Reporter reporter,
            JavaItem reference, JavaItem newItem) {
        if (reference instanceof ClassData) {
            // Check extends...
            if (!((ClassData) reference).getSuperName().equals(((ClassData) newItem).getSuperName())) {
                reporter.report(new Report(Severity.ERROR, reference.getName() + " extends " + ((ClassData) newItem).getSuperName() +
                        " and not " + ((ClassData) reference).getSuperName() + " anymore.", reference, newItem));
            }
            // Check interfaces
            for (String ifaceRef : ((ClassData) reference).getInterfaces()) {
                if (!((ClassData) newItem).getInterfaces().contains(ifaceRef)) {
                    reporter.report(new Report(Severity.ERROR, reference.getName() + " is not implementing " + ifaceRef + " anymore.", reference, newItem));
                }
            }
        }
        
    }

}