| /* |
| * 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.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(); |
| } |
| } |