| /*=============================================================================# |
| # Copyright (c) 2000, 2019 IBM Corporation and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 |
| # |
| # Contributors: |
| # IBM Corporation - org.eclipse.jdt: initial API and implementation |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.ecommons.templates; |
| |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.IRegion; |
| import org.eclipse.jface.text.Region; |
| |
| |
| public class WordFinder { |
| |
| |
| public static IRegion findWord(final IDocument document, final int offset) { |
| int start= -1; |
| int end= -1; |
| |
| try { |
| int pos= offset; |
| char c; |
| while (pos >= 0) { |
| c= document.getChar(pos); |
| if (!(Character.isLetterOrDigit(c) || c == '_')) { |
| break; |
| } |
| --pos; |
| } |
| start= pos; |
| |
| pos= offset; |
| final int length= document.getLength(); |
| while (pos < length) { |
| c= document.getChar(pos); |
| if (!(Character.isLetterOrDigit(c) || c == '_')) { |
| break; |
| } |
| ++pos; |
| } |
| end= pos; |
| } |
| catch (final BadLocationException x) { |
| } |
| |
| if (start > -1 && end > -1) { |
| if (start == offset && end == offset) { |
| return new Region(offset, 0); |
| } else if (start == offset) { |
| return new Region(start, end - start); |
| } else { |
| return new Region(start + 1, end - start - 1); |
| } |
| } |
| return null; |
| } |
| |
| } |