/*******************************************************************************
* Copyright (c) 2008 Phil Muldoon <pkmuldoon@picobot.org>.
*
* 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:
* Phil Muldoon <pkmuldoon@picobot.org> - initial API and implementation.
*******************************************************************************/
package org.eclipse.linuxtools.internal.systemtap.ui.ide.editors.stp;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.rules.EndOfLineRule;
import org.eclipse.jface.text.rules.ICharacterScanner;
import org.eclipse.jface.text.rules.IPredicateRule;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.IWordDetector;
import org.eclipse.jface.text.rules.MultiLineRule;
import org.eclipse.jface.text.rules.RuleBasedPartitionScanner;
import org.eclipse.jface.text.rules.SingleLineRule;
import org.eclipse.jface.text.rules.Token;
import org.eclipse.jface.text.rules.WordRule;
public class STPPartitionScanner extends RuleBasedPartitionScanner {
public static final String STP_PARTITIONING = "__stp_partitioning"; //$NON-NLS-1$
public static final String STP_STRING = "__stp_string"; //$NON-NLS-1$
public static final String STP_COMMENT = "__stp_comment"; //$NON-NLS-1$
public static final String STP_CONDITIONAL = "__stp_conditional"; //$NON-NLS-1$
public static final String STP_MULTILINE_COMMENT = "__stp_multiline_comment"; //$NON-NLS-1$
public static final String[] STP_PARTITION_TYPES = { IDocument.DEFAULT_CONTENT_TYPE,
STP_COMMENT, STP_MULTILINE_COMMENT, STP_STRING, STP_CONDITIONAL};
/**
* Detect empty comments
*/
private static class EmptyCommentDetector implements IWordDetector {
@Override
public boolean isWordStart(char c) {
return (c == '/');
}
@Override
public boolean isWordPart(char c) {
return (c == '*' || c == '/');
}
}
/**
* Cope with the empty comment issue.
*/
private static class EmptyCommentRule extends WordRule implements IPredicateRule {
private IToken fSuccessToken;
public EmptyCommentRule(IToken successToken) {
super(new EmptyCommentDetector());
fSuccessToken= successToken;
addWord("/**/", fSuccessToken); //$NON-NLS-1$
}
@Override
public IToken evaluate(ICharacterScanner scanner, boolean resume) {
return evaluate(scanner);
}
@Override
public IToken getSuccessToken() {
return fSuccessToken;
}
}
public STPPartitionScanner() {
IToken stpComment = new Token(STP_COMMENT);
IToken stpMultilineComment = new Token(STP_MULTILINE_COMMENT);
IToken stpConditional = new Token(STP_CONDITIONAL);
IToken stpString = new Token(STP_STRING);
// Add special case word rule.
EmptyCommentRule emptyCommentRule= new EmptyCommentRule(stpComment);
setPredicateRules(new IPredicateRule[] {
new EndOfLineRule("//", stpComment), //$NON-NLS-1$
new MultiLineRule("/*", "*/", stpMultilineComment), //$NON-NLS-1$//$NON-NLS-2$
new EndOfLineRule("#", stpComment), //$NON-NLS-1$
emptyCommentRule,
new SingleLineRule("\"", "\"", stpString, '\\', false, true), //$NON-NLS-1$ //$NON-NLS-2$
new MultiLineRule("%(", "%)", stpConditional), //$NON-NLS-1$ //$NON-NLS-2$
});
}
}