/*******************************************************************************
* Copyright (c) 2004, 2009 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
* Frits Jalvingh - contributions for bug 150794
*******************************************************************************/
package org.eclipse.jst.jsp.ui.internal.style.java;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.jface.text.rules.EndOfLineRule;
import org.eclipse.jface.text.rules.IRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.MultiLineRule;
import org.eclipse.jface.text.rules.SingleLineRule;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.rules.WordRule;
/**
* A Java code scanner.
*/
class JavaCodeScanner extends org.eclipse.jface.text.rules.RuleBasedScanner {
private IToken fKeywordToken;
private IToken fTypeToken;
private IToken fStringToken;
private IToken fSingleLineCommentToken;
private IToken fDefaultToken;
private static String[] fgKeywords = {"abstract", //$NON-NLS-1$
"break", //$NON-NLS-1$
"case", "catch", "class", "continue", //$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
"default", "do", //$NON-NLS-2$//$NON-NLS-1$
"else", "extends", //$NON-NLS-2$//$NON-NLS-1$
"final", "finally", "for", //$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
"if", "implements", "import", "instanceof", "interface", //$NON-NLS-5$//$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
"native", "new", //$NON-NLS-2$//$NON-NLS-1$
"package", "private", "protected", "public", //$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
"return", //$NON-NLS-1$
"static", "super", "switch", "synchronized", //$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
"this", "throw", "throws", "transient", "try", //$NON-NLS-5$//$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
"volatile", //$NON-NLS-1$
"while", //$NON-NLS-1$
"strictfp",//$NON-NLS-1$
};
private static String[] fgTypes = {"void", "boolean", "char", "byte", "short", "int", "long", "float", "double"};//$NON-NLS-9$//$NON-NLS-8$//$NON-NLS-7$//$NON-NLS-6$//$NON-NLS-5$//$NON-NLS-4$//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
private static String[] fgConstants = {"false", "null", "true"};//$NON-NLS-3$//$NON-NLS-2$//$NON-NLS-1$
/**
* Creates a Java code scanner
*/
public JavaCodeScanner() {
super();
}
public void initializeRules() {
List rules = new ArrayList();
// Add rule for multiple line comments.
rules.add(new MultiLineRule("/*", "*/", fSingleLineCommentToken));//$NON-NLS-1$ //$NON-NLS-2$
// Add rule for single line comments.
rules.add(new EndOfLineRule("//", fSingleLineCommentToken));//$NON-NLS-1$
// Add rule for strings and character constants.
rules.add(new SingleLineRule("\"", "\"", fStringToken, '\\'));//$NON-NLS-2$//$NON-NLS-1$
rules.add(new SingleLineRule("'", "'", fStringToken, '\\'));//$NON-NLS-2$//$NON-NLS-1$
// Add generic whitespace rule.
//rules.add(new WhitespaceRule(new JavaWhitespaceDetector()));
// Add word rule for keywords, types, and constants.
WordRule wordRule = new WordRule(new JavaWordDetector(), fDefaultToken);
for (int i = 0; i < fgKeywords.length; i++)
wordRule.addWord(fgKeywords[i], fKeywordToken);
for (int i = 0; i < fgTypes.length; i++)
wordRule.addWord(fgTypes[i], fTypeToken);
for (int i = 0; i < fgConstants.length; i++)
wordRule.addWord(fgConstants[i], fTypeToken);
rules.add(wordRule);
// Add the double-quoted string rule
rules.add(new DoubleQuotedStringRule(fStringToken));
IRule[] result = new IRule[rules.size()];
rules.toArray(result);
setRules(result);
}
public void setTokenData(String tokenKey, Object data) {
if (tokenKey == IStyleConstantsJSPJava.JAVA_KEYWORD) {
fKeywordToken = new Token(data);
fTypeToken = new Token(data);
} else if (tokenKey == IStyleConstantsJSPJava.JAVA_STRING) {
fStringToken = new Token(data);
} else if (tokenKey == IStyleConstantsJSPJava.JAVA_SINGLE_LINE_COMMENT) {
fSingleLineCommentToken = new Token(data);
} else if (tokenKey == IStyleConstantsJSPJava.JAVA_DEFAULT) {
fDefaultToken = new Token(data);
}
}
}