| /* |
| * Copyright (C) 2009, Google Inc. |
| * Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| 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(false); |
| } |
| |
| LIFORevQueue(Generator s) throws MissingObjectException, |
| IncorrectObjectTypeException, IOException { |
| super(s); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void add(RevCommit c) { |
| Block b = head; |
| if (b == null || !b.canUnpop()) { |
| b = free.newBlock(); |
| b.resetToEnd(); |
| b.next = head; |
| head = b; |
| } |
| b.unpop(c); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| 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; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public void clear() { |
| head = null; |
| free.clear(); |
| } |
| |
| @Override |
| boolean everbodyHasFlag(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; |
| } |
| |
| @Override |
| boolean anybodyHasFlag(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; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| 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(); |
| } |
| } |