001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041:
042: package org.netbeans.modules.lexer.gen.javacc;
043:
044: import java.io.File;
045: import java.io.IOException;
046: import org.netbeans.modules.lexer.gen.DescriptionReader;
047: import org.netbeans.modules.lexer.gen.LanguageGenerator;
048: import org.netbeans.modules.lexer.gen.LanguageData;
049: import org.netbeans.modules.lexer.gen.util.LexerGenUtilities;
050: import org.xml.sax.SAXException;
051:
052: /**
053: * Language class generator for javacc generated lexers.
054: *
055: * @author Miloslav Metelka
056: * @version 1.00
057: */
058:
059: public class JavaCCLanguageGenerator extends LanguageGenerator {
060:
061: protected void appendClassStart(StringBuffer sb, LanguageData data) {
062: LexerGenUtilities.appendSpaces(sb, 4);
063: sb
064: .append("/** Maximum lexer state determined from xxxConstants class. */\n");
065: LexerGenUtilities.appendSpaces(sb, 4);
066: sb.append("static final int MAX_STATE = ");
067: JavaCCTokenTypes jcctt = (JavaCCTokenTypes) data
068: .getTokenTypes();
069: sb.append(jcctt.getMaxState());
070: sb.append(";\n\n");
071:
072: super .appendClassStart(sb, data);
073: }
074:
075: public String generate(String langClassName, String lexerClassName,
076: String tokenTypesClassName, File xmlLangDescFile)
077: throws ClassNotFoundException, SAXException, IOException {
078:
079: LanguageData data = new LanguageData();
080: data.setLanguageClassName(langClassName);
081: data.setLexerClassName(lexerClassName);
082:
083: // Apply token constants class info
084: if (tokenTypesClassName != null) {
085: Class tokenTypesClass = Class.forName(tokenTypesClassName);
086: JavaCCTokenTypes tokenTypes = new JavaCCTokenTypes(
087: tokenTypesClass);
088: data.registerTokenTypes(tokenTypes);
089: }
090:
091: // Apply possible xml description
092: if (xmlLangDescFile != null) {
093: DescriptionReader xmlLangDesc = new DescriptionReader(
094: xmlLangDescFile.getAbsolutePath());
095:
096: xmlLangDesc.applyTo(data);
097:
098: }
099:
100: // Update int ids that do not have counterparts in token types
101: data.updateUnassignedIntIds();
102:
103: return createSource(data);
104: }
105:
106: }
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