| /******************************************************************************* |
| * Copyright (c) 2004, 2005 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 |
| *******************************************************************************/ |
| package org.eclipse.jst.jsp.ui.internal.style.jspel; |
| |
| |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jface.text.rules.IRule; |
| import org.eclipse.jface.text.rules.IToken; |
| import org.eclipse.jface.text.rules.Token; |
| import org.eclipse.jface.text.rules.WhitespaceRule; |
| import org.eclipse.jface.text.rules.WordRule; |
| |
| /** |
| * A Java code scanner. |
| */ |
| public class JSPELCodeScanner extends org.eclipse.jface.text.rules.RuleBasedScanner { |
| private IToken fKeywordToken; |
| private IToken fTypeToken; |
| private IToken fDefaultToken; |
| |
| private static String[] fgKeywords = { |
| "and", //$NON-NLS-1$ |
| "did", //$NON-NLS-1$ |
| "div", //$NON-NLS-1$ |
| "empty", //$NON-NLS-1$ |
| "eq", //$NON-NLS-1$ |
| "ge", //$NON-NLS-1$ |
| "gt", //$NON-NLS-1$ |
| "or", //$NON-NLS-1$ |
| "le", //$NON-NLS-1$ |
| "lt", //$NON-NLS-1$ |
| "mod", //$NON-NLS-1$ |
| "ne", //$NON-NLS-1$ |
| "not" //$NON-NLS-1$ |
| }; |
| private static String[] fgConstants = {"false", "true"};//$NON-NLS-2$//$NON-NLS-1$ |
| |
| /** |
| * Creates a Java code scanner |
| */ |
| public JSPELCodeScanner() { |
| super(); |
| } |
| |
| public void initializeRules() { |
| List rules = new ArrayList(); |
| |
| // Add generic whitespace rule. |
| rules.add(new WhitespaceRule(new JSPELWhitespaceDetector())); |
| |
| // Add word rule for keywords, types, and constants. |
| WordRule wordRule = new WordRule(new JSPELWordDetector(), fDefaultToken); |
| for (int i = 0; i < fgKeywords.length; i++) |
| wordRule.addWord(fgKeywords[i], fKeywordToken); |
| for (int i = 0; i < fgConstants.length; i++) |
| wordRule.addWord(fgConstants[i], fTypeToken); |
| rules.add(wordRule); |
| |
| IRule[] result = new IRule[rules.size()]; |
| rules.toArray(result); |
| setRules(result); |
| } |
| |
| public void setTokenData(String tokenKey, Object data) { |
| if (tokenKey == IStyleConstantsJSPEL.EL_KEYWORD) { |
| fKeywordToken = new Token(data); |
| fTypeToken = new Token(data); |
| } else if (tokenKey == IStyleConstantsJSPEL.EL_DEFAULT) { |
| fDefaultToken = new Token(data); |
| } |
| } |
| } |