| /******************************************************************************* |
| * Copyright (c) 2008 xored software, Inc. |
| * |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * xored software, Inc. - initial API and Implementation (Alex Panchenko) |
| *******************************************************************************/ |
| package org.eclipse.dltk.ruby.internal.ui.text; |
| |
| import org.eclipse.jface.text.rules.ICharacterScanner; |
| import org.eclipse.jface.text.rules.IToken; |
| import org.eclipse.jface.text.rules.MultiLineRule; |
| |
| public class RDocRule extends MultiLineRule { |
| |
| private static final String BEGIN = "=begin"; //$NON-NLS-1$ |
| |
| private static final String END = "=end"; //$NON-NLS-1$ |
| |
| /** |
| * @param token |
| */ |
| public RDocRule(IToken token) { |
| super(BEGIN, END, token); |
| setColumnConstraint(0); |
| } |
| |
| /** |
| * Returns whether the end sequence was detected. |
| * |
| * @param scanner |
| * the character scanner to be used |
| * @return <code>true</code> if the end sequence has been detected |
| */ |
| protected boolean endSequenceDetected(ICharacterScanner scanner) { |
| int readCount = 1; |
| int c; |
| while ((c = scanner.read()) != ICharacterScanner.EOF) { |
| if (fEndSequence.length > 0 && c == fEndSequence[0] |
| && scanner.getColumn() == fColumn + 1) { |
| // Check if the specified end sequence has been found. |
| if (sequenceDetected(scanner, fEndSequence, true)) |
| return true; |
| } |
| readCount++; |
| } |
| for (; readCount > 0; readCount--) |
| scanner.unread(); |
| return false; |
| } |
| } |