// Copyright (c) 2009 The Chromium Authors. All rights reserved.
//Use of this source code is governed by a BSD-style license that can be
//found in the LICENSE file.
package com.github.sdbg.debug.ui.internal.editors;
//&&&package org.chromium.debug.ui.editors;
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;
/**
* JavaScript partition scanner.
*/
public class JsPartitionScanner extends RuleBasedPartitionScanner {
/**
* Empty comments should be handled so as not to be confused with JSDoc.
*/
private static class EmptyCommentDetector implements IWordDetector {
@Override
public boolean isWordPart(char c) {
return (c == '*' || c == '/');
}
@Override
public boolean isWordStart(char c) {
return (c == '/');
}
}
private static class EmptyCommentPredicateRule extends WordRule implements IPredicateRule {
private final IToken successToken;
public EmptyCommentPredicateRule(IToken successToken) {
super(new EmptyCommentDetector());
this.successToken = successToken;
addWord("/**/", successToken); //$NON-NLS-1$
}
@Override
public IToken evaluate(ICharacterScanner scanner, boolean resume) {
return super.evaluate(scanner);
}
@Override
public IToken getSuccessToken() {
return successToken;
}
}
static final String PARTITIONING = "ChromiumJavaScriptPartitioning"; //$NON-NLS-1$
static final String MULTILINE_COMMENT = "__js_multiline_comment"; //$NON-NLS-1$
static final String JSDOC = "__jsdoc"; //$NON-NLS-1$
static final String[] PARTITION_TYPES = {MULTILINE_COMMENT, JSDOC};
public JsPartitionScanner() {
IToken jsDocToken = new Token(JSDOC);
IToken multilineCommentToken = new Token(MULTILINE_COMMENT);
setPredicateRules(new IPredicateRule[] {
new EndOfLineRule("//", Token.UNDEFINED), //$NON-NLS-1$
new SingleLineRule("\"", "\"", Token.UNDEFINED, '\\'), //$NON-NLS-2$ //$NON-NLS-1$
new SingleLineRule("'", "'", Token.UNDEFINED, '\\'), //$NON-NLS-2$ //$NON-NLS-1$
new EmptyCommentPredicateRule(multilineCommentToken),
new MultiLineRule("/**", "*/", jsDocToken, (char) 0, true), //$NON-NLS-1$ //$NON-NLS-2$
new MultiLineRule("/*", "*/", multilineCommentToken, (char) 0, true) //$NON-NLS-1$ //$NON-NLS-2$
});
}
}