org.mutabilitydetector.locations.CodeLocation Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of MutabilityDetector Show documentation
Lightweight analysis tool for detecting mutability in Java classes.
There is a newer version: 0.10.6
package org.mutabilitydetector.locations;

/*
 * #%L
 * MutabilityDetector
 * %%
 * Copyright (C) 2008 - 2014 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.
 * #L%
 */



import javax.annotation.Nonnull;
import javax.annotation.concurrent.Immutable;

public abstract class CodeLocation> implements Comparable {

    private CodeLocation() {}

    public abstract String typeName();

    public abstract String prettyPrint();

    @Immutable
    public static final class UnknownCodeLocation extends CodeLocation {

        public static final UnknownCodeLocation UNKNOWN = new UnknownCodeLocation();
        
        private UnknownCodeLocation() { }
        
        @Override
        public int compareTo(@Nonnull UnknownCodeLocation o) {
            return 0; // There can be only one.
        }
        
        @Override
        public boolean equals(Object obj) {
            return obj == this;
        }
        
        @Override
        public int hashCode() {
            return 0;
        }

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

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

    @Immutable
    public static final class ClassLocation extends CodeLocation {

        private final @Nonnull
        String dottedClassName;

        public ClassLocation(String dottedClassName) {
            this.dottedClassName = dottedClassName;
        }

        @Override
        public String typeName() {
            return dottedClassName;
        }

        String typeShortName() {
          final String[] classNameParts = dottedClassName.split("\\.");
          return classNameParts[classNameParts.length - 1];
        }

        @Override
        public int compareTo(@Nonnull ClassLocation other) {
            return typeName().compareTo(other.typeName());
        }

        @Override
        public int hashCode() {
            return dottedClassName.hashCode();
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) { return true; }
            if (obj == null) { return false; }
            if (getClass() != obj.getClass()) { return false; }
            ClassLocation other = (ClassLocation) obj;

            return dottedClassName.equals(other.dottedClassName);
        }

        public static ClassLocation fromInternalName(String internalClassName) {
            String dottedClassName = new ClassNameConverter().dotted(internalClassName);
            return new ClassLocation(dottedClassName);
        }

        public static ClassLocation from(Slashed slashed) {
            String dottedClassName = ClassIdentifier.forClass(slashed).asDotted().asString();
            return new ClassLocation(dottedClassName);
        }

        public static ClassLocation from(Dotted dotted) {
            return new ClassLocation(dotted.asString());
        }

        @Override
        public String prettyPrint() {
            return String.format("[at %s(%s.java:1)]", typeName(), typeShortName());
        }

    }

    @Immutable
    public static final class FieldLocation extends CodeLocation {

        private final @Nonnull String fieldName;
        private final @Nonnull ClassLocation ownerOfField;

        private FieldLocation(String fieldName, ClassLocation ownerOfField) {
            this.fieldName = fieldName;
            this.ownerOfField = ownerOfField;
        }

        public static FieldLocation fieldLocation(String fieldName, ClassLocation ownerOfField) {
            return new FieldLocation(fieldName, ownerOfField);
        }

        public String fieldName() {
            return fieldName;
        }

        @Override
        public String typeName() {
            return ownerOfField.typeName();
        }

        String typeShortName() {
          return ownerOfField.typeShortName();
        }

        @Override
        public int compareTo(@Nonnull FieldLocation other) {
            int comparingOwner = ownerOfField.compareTo(other.ownerOfField);
            int comparingFieldName = fieldName.compareTo(other.fieldName);
            return comparingOwner == 0 ? comparingFieldName : comparingOwner;
        }

        @Override
        public int hashCode() {
            final int prime = 31;
            int result = 1;
            result = prime * result + fieldName.hashCode();
            result = prime * result + ownerOfField.hashCode();
            return result;
        }

        @Override
        public boolean equals(Object obj) {
            if (this == obj) return true;
            if (obj == null) return false;
            if (getClass() != obj.getClass()) return false;
            FieldLocation other = (FieldLocation) obj;

            return fieldName.equals(other.fieldName) && ownerOfField.equals(other.ownerOfField);
        }

        @Override
        public String prettyPrint() {
            return String.format("[Field: %s at %s(%s.java:1)]", fieldName(), typeName(), typeShortName());
        }

    }


}