/*
 *    Copyright (c) 2008-2011 Graham Allan
 *
 *   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.mutabilitydetector.locations;

public interface CodeLocation<T extends CodeLocation<T>> extends Comparable<T> {

    String typeName();

    public abstract String prettyPrint();
    
    public final static class UnknownCodeLocation implements CodeLocation<UnknownCodeLocation> {

        public static final UnknownCodeLocation UNKNOWN = new UnknownCodeLocation();
        
        private UnknownCodeLocation() { }
        
        @Override
        public int compareTo(UnknownCodeLocation o) {
            return 0; // There can be only one.
        }

        @Override
        public String typeName() {
            return "unknown code location";
        }

        @Override
        public String prettyPrint() {
            return "[Unknown code location]";
        }
        
    }

}

@@ -1183,32 +1183,239 @@
 y one.%0A        %7D
+%0A        %0A        @Override%0A        public boolean equals(Object obj) %7B%0A            return obj == UNKNOWN;%0A        %7D%0A        %0A        @Override%0A        public int hashCode() %7B%0A            return 0;%0A        %7D
 %0A%0A        @Overr

Remove warnings by implementing equals/hashcode.