| /******************************************************************************* |
| * Copyright (c) 2005, 2007 ILOG and others. |
| * 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: |
| * Joel Cheuoua - Initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jet.internal.editor; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| |
| /** |
| * @author jcheuoua |
| * |
| * To change the template for this generated type comment go to Window>Preferences>Java>Code Generation>Code |
| * and Comments |
| * @version $Revision: 1.2 $ |
| */ |
| public class JETDocumentReader { |
| public static final int EOF = -1; |
| |
| private IDocument document; |
| |
| private int offset; |
| |
| /** |
| * Constructor for JETDocumentReader. |
| * |
| * @param document |
| * IDocument |
| * @param documentOffset |
| * int |
| */ |
| public JETDocumentReader(IDocument document, int documentOffset) { |
| this.document = null; |
| offset = -1; |
| if (documentOffset > 0) |
| offset = documentOffset; |
| this.document = document; |
| } |
| |
| /** |
| * Method readForward. |
| * |
| * @return char |
| */ |
| public char readForward() { |
| try { |
| if (document.getChar(offset) == '\uFFFF') { |
| return '\uFFFF'; |
| } else { |
| offset++; |
| return document.getChar(offset); |
| } |
| } catch (BadLocationException ex) { |
| return '\uFFFF'; |
| } |
| } |
| |
| /** |
| * Method readBackward. |
| * |
| * @return char |
| */ |
| public char readBackward() { |
| if (offset <= 0) |
| return '\uFFFF'; |
| try { |
| offset--; |
| return document.getChar(offset); |
| } catch (BadLocationException e) { |
| return '\uFFFF'; |
| } |
| } |
| } |