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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;
- import org.eclipse.jgit.lib.ObjectLoader;
-
- /** 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 {
- final ObjectLoader ldr = walk.db.openObject(walk.curs, this);
- if (ldr == null)
- throw new MissingObjectException(this, getType());
- final byte[] data = ldr.getCachedBytes();
- if (getType() != ldr.getType())
- throw new IncorrectObjectTypeException(this, getType());
- return data;
- }
-
- /**
- * 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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