Mercurial > projects > dwt-addons
view dwtx/jface/text/rules/WhitespaceRule.d @ 129:eb30df5ca28b
Added JFace Text sources
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 23 Aug 2008 19:10:48 +0200 |
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children | c4fb132a086c |
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/******************************************************************************* * Copyright (c) 2000, 2006 IBM Corporation 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: * IBM Corporation - initial API and implementation * Port to the D programming language: * Frank Benoit <benoit@tionex.de> *******************************************************************************/ module dwtx.jface.text.rules.WhitespaceRule; import dwt.dwthelper.utils; import dwtx.core.runtime.Assert; /** * An implementation of <code>IRule</code> capable of detecting whitespace. * A whitespace rule uses a whitespace detector in order to find out which * characters are whitespace characters. * * @see IWhitespaceDetector */ public class WhitespaceRule : IRule { /** The whitespace detector used by this rule */ protected IWhitespaceDetector fDetector; /** * Creates a rule which, with the help of an * whitespace detector, will return a whitespace * token when a whitespace is detected. * * @param detector the rule's whitespace detector, may not be <code>null</code> */ public WhitespaceRule(IWhitespaceDetector detector) { Assert.isNotNull(detector); fDetector= detector; } /* * @see IRule#evaluate(ICharacterScanner) */ public IToken evaluate(ICharacterScanner scanner) { int c= scanner.read(); if (fDetector.isWhitespace((char) c)) { do { c= scanner.read(); } while (fDetector.isWhitespace((char) c)); scanner.unread(); return Token.WHITESPACE; } scanner.unread(); return Token.UNDEFINED; } }