RevFlagSet.java
- /*
- * 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();
- }
- }