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/*******************************************************************************
* Copyright (c) 2000, 2017 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.core.diff.provider;
import org.eclipse.core.runtime.IPath;
import org.eclipse.team.core.diff.*;
import org.eclipse.team.internal.core.mapping.SyncInfoToDiffConverter;
/**
* Abstract implementation of {@link IDiff} that can be subclassed by
* clients.
*
* @see ITwoWayDiff
* @see IThreeWayDiff
* @since 3.2
*/
public abstract class Diff implements IDiff {
/**
* Constant (bit mask) that defines the area of the status that is reserved
* for use by this abstract class for encoding the kind of the diff.
*
* @see #getStatus()
*/
public static final int KIND_MASK = 0xFF;
private final IPath path;
private final int status;
/**
* Create a diff node.
*
* @param path the path of the diff
* @param status the status of the diff. The kind should be encoded in the
* status along with any additional flags required by a subclass.
*/
protected Diff(IPath path, int status) {
this.path = path;
this.status = status;
}
@Override
public IPath getPath() {
return path;
}
@Override
public int getKind() {
return getStatus() & KIND_MASK;
}
/**
* Return the status of the diff node. The status is a bit field that
* contains the kind and any additional status information that subclasses
* need to encode. The first byte of the status is reserved for use by this
* abstract class as indicated by the <code>KIND_MASK</code>.
*
* @return the status of the diff node
*/
public final int getStatus() {
return status;
}
@Override
public String toDiffString() {
int kind = getKind();
String label = SyncInfoToDiffConverter.diffKindToString(kind);
return label;
}
@Override
public int hashCode() {
return getPath().hashCode();
}
@Override
public boolean equals(Object obj) {
if (obj == this)
return true;
if (obj instanceof Diff) {
Diff other = (Diff) obj;
return other.getPath().equals(getPath()) && getStatus() == other.getStatus();
}
return false;
}
}
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