| /* |
| * 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.util.AbstractSet; |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| /** |
| * Multiple application level mark bits for |
| * {@link org.eclipse.jgit.revwalk.RevObject}s. |
| * |
| * @see RevFlag |
| */ |
| public class RevFlagSet extends AbstractSet<RevFlag> { |
| int mask; |
| |
| private final List<RevFlag> active; |
| |
| /** |
| * Create an empty set of flags. |
| */ |
| public RevFlagSet() { |
| active = new ArrayList<>(); |
| } |
| |
| /** |
| * Create a set of flags, copied from an existing set. |
| * |
| * @param s |
| * the set to copy flags from. |
| */ |
| public RevFlagSet(RevFlagSet s) { |
| mask = s.mask; |
| active = new ArrayList<>(s.active); |
| } |
| |
| /** |
| * Create a set of flags, copied from an existing collection. |
| * |
| * @param s |
| * the collection to copy flags from. |
| */ |
| public RevFlagSet(Collection<RevFlag> s) { |
| this(); |
| addAll(s); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean contains(Object o) { |
| if (o instanceof RevFlag) |
| return (mask & ((RevFlag) o).mask) != 0; |
| return false; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean containsAll(Collection<?> c) { |
| if (c instanceof RevFlagSet) { |
| final int cMask = ((RevFlagSet) c).mask; |
| return (mask & cMask) == cMask; |
| } |
| return super.containsAll(c); |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean add(RevFlag flag) { |
| if ((mask & flag.mask) != 0) |
| return false; |
| mask |= flag.mask; |
| int p = 0; |
| while (p < active.size() && active.get(p).mask < flag.mask) |
| p++; |
| active.add(p, flag); |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public boolean remove(Object o) { |
| final RevFlag flag = (RevFlag) o; |
| if ((mask & flag.mask) == 0) |
| return false; |
| mask &= ~flag.mask; |
| for (int i = 0; i < active.size(); i++) |
| if (active.get(i).mask == flag.mask) |
| active.remove(i); |
| return true; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public Iterator<RevFlag> iterator() { |
| final Iterator<RevFlag> i = active.iterator(); |
| return new Iterator<RevFlag>() { |
| private RevFlag current; |
| |
| @Override |
| public boolean hasNext() { |
| return i.hasNext(); |
| } |
| |
| @Override |
| public RevFlag next() { |
| return current = i.next(); |
| } |
| |
| @Override |
| public void remove() { |
| mask &= ~current.mask; |
| i.remove(); |
| } |
| }; |
| } |
| |
| /** {@inheritDoc} */ |
| @Override |
| public int size() { |
| return active.size(); |
| } |
| } |