| /* |
| * Copyright (C) 2009, Google Inc. |
| * 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.IncorrectObjectTypeException; |
| import org.eclipse.jgit.errors.MissingObjectException; |
| |
| /** A queue of commits in LIFO order. */ |
| public class LIFORevQueue extends BlockRevQueue { |
| private Block head; |
| |
| /** Create an empty LIFO queue. */ |
| public LIFORevQueue() { |
| super(); |
| } |
| |
| LIFORevQueue(final Generator s) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| super(s); |
| } |
| |
| public void add(final RevCommit c) { |
| Block b = head; |
| if (b == null || !b.canUnpop()) { |
| b = free.newBlock(); |
| b.resetToEnd(); |
| b.next = head; |
| head = b; |
| } |
| b.unpop(c); |
| } |
| |
| public RevCommit next() { |
| final Block b = head; |
| if (b == null) |
| return null; |
| |
| final RevCommit c = b.pop(); |
| if (b.isEmpty()) { |
| head = b.next; |
| free.freeBlock(b); |
| } |
| return c; |
| } |
| |
| public void clear() { |
| head = null; |
| free.clear(); |
| } |
| |
| boolean everbodyHasFlag(final int f) { |
| for (Block b = head; b != null; b = b.next) { |
| for (int i = b.headIndex; i < b.tailIndex; i++) |
| if ((b.commits[i].flags & f) == 0) |
| return false; |
| } |
| return true; |
| } |
| |
| boolean anybodyHasFlag(final int f) { |
| for (Block b = head; b != null; b = b.next) { |
| for (int i = b.headIndex; i < b.tailIndex; i++) |
| if ((b.commits[i].flags & f) != 0) |
| return true; |
| } |
| return false; |
| } |
| |
| public String toString() { |
| final StringBuilder s = new StringBuilder(); |
| for (Block q = head; q != null; q = q.next) { |
| for (int i = q.headIndex; i < q.tailIndex; i++) |
| describe(s, q.commits[i]); |
| } |
| return s.toString(); |
| } |
| } |