| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Common Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jface.text; |
| |
| |
| /** |
| * Standard implementation of a generic |
| * {@link org.eclipse.jface.text.ILineTracker}. |
| * <p> |
| * The line tracker can be configured with the set of legal line delimiters. |
| * Line delimiters are unconstrained. The line delimiters are used to compute |
| * the tracker's line structure. In the case of overlapping line delimiters, the |
| * longest line delimiter is given precedence of the shorter ones. |
| * <p> |
| * This class is not intended to be subclassed. |
| */ |
| public class ConfigurableLineTracker extends AbstractLineTracker { |
| |
| |
| /** The strings which are considered being the line delimiter */ |
| private String[] fDelimiters; |
| /** A predefined delimiter information which is always reused as return value */ |
| private DelimiterInfo fDelimiterInfo= new DelimiterInfo(); |
| |
| |
| /** |
| * Creates a standard line tracker for the given line delimiters. |
| * |
| * @param legalLineDelimiters the tracker's legal line delimiters, |
| * may not be <code>null</code> and must be longer than 0 |
| */ |
| public ConfigurableLineTracker(String[] legalLineDelimiters) { |
| Assert.isTrue(legalLineDelimiters != null && legalLineDelimiters.length > 0); |
| fDelimiters= legalLineDelimiters; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.ILineTracker#getLegalLineDelimiters() |
| */ |
| public String[] getLegalLineDelimiters() { |
| return fDelimiters; |
| } |
| |
| /* |
| * @see org.eclipse.jface.text.AbstractLineTracker#nextDelimiterInfo(java.lang.String, int) |
| */ |
| protected DelimiterInfo nextDelimiterInfo(String text, int offset) { |
| int[] info= TextUtilities.indexOf(fDelimiters, text, offset); |
| if (info[0] == -1) |
| return null; |
| |
| fDelimiterInfo.delimiterIndex= info[0]; |
| fDelimiterInfo.delimiter= fDelimiters[info[1]]; |
| fDelimiterInfo.delimiterLength= fDelimiterInfo.delimiter.length(); |
| return fDelimiterInfo; |
| } |
| } |