| /******************************************************************************* |
| * Copyright (c) 2007, 2009 David Green and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * David Green - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.mylyn.internal.wikitext.ui.editor.syntax; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| |
| /** |
| * @author David Green |
| */ |
| public class Segments<T extends Segment<?>> { |
| private List<T> list; |
| |
| public void add(T t) { |
| if (list == null) { |
| list = new ArrayList<>(); |
| } else if (list.size() > 0) { |
| Segment<?> previousSegment = list.get(list.size() - 1); |
| final int tOffset = t.getOffset(); |
| if (previousSegment.getOffset() > tOffset) { |
| throw new IllegalArgumentException(); |
| } |
| if (previousSegment.getEndOffset() > tOffset) { |
| int newLength = tOffset - previousSegment.getOffset(); |
| previousSegment.setLength(newLength); |
| } |
| } |
| list.add(t); |
| } |
| |
| public void remove(T t) { |
| list.remove(t); |
| } |
| |
| public List<T> asList() { |
| if (list == null) { |
| return Collections.emptyList(); |
| } |
| return list; |
| } |
| |
| public boolean isEmpty() { |
| return list == null || list.isEmpty(); |
| } |
| |
| public int size() { |
| return list == null ? 0 : list.size(); |
| } |
| |
| } |