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/*
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.eclipse.jgit.revwalk;
import java.io.IOException;
import org.eclipse.jgit.errors.CorruptObjectException;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
/** Base object type accessed during revision walking. */
public abstract class RevObject extends ObjectId {
static final int PARSED = 1;
int flags;
RevObject(final AnyObjectId name) {
super(name);
}
void parseHeaders(final RevWalk walk) throws MissingObjectException,
IncorrectObjectTypeException, IOException {
loadCanonical(walk);
flags |= PARSED;
}
void parseBody(final RevWalk walk) throws MissingObjectException,
IncorrectObjectTypeException, IOException {
if ((flags & PARSED) == 0)
parseHeaders(walk);
}
final byte[] loadCanonical(final RevWalk walk) throws IOException,
MissingObjectException, IncorrectObjectTypeException,
CorruptObjectException {
return walk.curs.open(this, getType()).getCachedBytes();
}
/**
* Get Git object type. See {@link Constants}.
*
* @return object type
*/
public abstract int getType();
/**
* Get the name of this object.
*
* @return unique hash of this object.
*/
public final ObjectId getId() {
return this;
}
@Override
public final boolean equals(final AnyObjectId o) {
return this == o;
}
@Override
public final boolean equals(final Object o) {
return this == o;
}
/**
* Test to see if the flag has been set on this object.
*
* @param flag
* the flag to test.
* @return true if the flag has been added to this object; false if not.
*/
public final boolean has(final RevFlag flag) {
return (flags & flag.mask) != 0;
}
/**
* Test to see if any flag in the set has been set on this object.
*
* @param set
* the flags to test.
* @return true if any flag in the set has been added to this object; false
* if not.
*/
public final boolean hasAny(final RevFlagSet set) {
return (flags & set.mask) != 0;
}
/**
* Test to see if all flags in the set have been set on this object.
*
* @param set
* the flags to test.
* @return true if all flags of the set have been added to this object;
* false if some or none have been added.
*/
public final boolean hasAll(final RevFlagSet set) {
return (flags & set.mask) == set.mask;
}
/**
* Add a flag to this object.
* <p>
* If the flag is already set on this object then the method has no effect.
*
* @param flag
* the flag to mark on this object, for later testing.
*/
public final void add(final RevFlag flag) {
flags |= flag.mask;
}
/**
* Add a set of flags to this object.
*
* @param set
* the set of flags to mark on this object, for later testing.
*/
public final void add(final RevFlagSet set) {
flags |= set.mask;
}
/**
* Remove a flag from this object.
* <p>
* If the flag is not set on this object then the method has no effect.
*
* @param flag
* the flag to remove from this object.
*/
public final void remove(final RevFlag flag) {
flags &= ~flag.mask;
}
/**
* Remove a set of flags from this object.
*
* @param set
* the flag to remove from this object.
*/
public final void remove(final RevFlagSet set) {
flags &= ~set.mask;
}
@Override
public String toString() {
final StringBuilder s = new StringBuilder();
s.append(Constants.typeString(getType()));
s.append(' ');
s.append(name());
s.append(' ');
appendCoreFlags(s);
return s.toString();
}
/**
* @param s
* buffer to append a debug description of core RevFlags onto.
*/
protected void appendCoreFlags(final StringBuilder s) {
s.append((flags & RevWalk.TOPO_DELAY) != 0 ? 'o' : '-');
s.append((flags & RevWalk.TEMP_MARK) != 0 ? 't' : '-');
s.append((flags & RevWalk.REWRITE) != 0 ? 'r' : '-');
s.append((flags & RevWalk.UNINTERESTING) != 0 ? 'u' : '-');
s.append((flags & RevWalk.SEEN) != 0 ? 's' : '-');
s.append((flags & RevWalk.PARSED) != 0 ? 'p' : '-');
}
}
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