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/*******************************************************************************
* Copyright (c) 2007, 2015 Red Hat, Inc.
* 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:
* Red Hat Incorporated - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.autotools.ui.editors;
import org.eclipse.core.runtime.Assert;
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.Token;
public class AutoconfIdentifierRule implements IPredicateRule {
private IToken fToken;
private String fExtraChars = "_${@"; //$NON-NLS-1$
public AutoconfIdentifierRule(IToken token) {
Assert.isNotNull(token);
fToken = token;
}
@Override
public IToken getSuccessToken() {
return fToken;
}
@Override
public IToken evaluate(ICharacterScanner scanner) {
return evaluate(scanner, false);
}
@Override
public IToken evaluate(ICharacterScanner scanner, boolean resume) {
int c = scanner.read();
if (Character.isLetterOrDigit((char)c) || fExtraChars.indexOf((char)c) >= 0) {
do {
c = scanner.read();
} while (Character.isLetterOrDigit((char)c) || fExtraChars.indexOf((char)c) >= 0);
scanner.unread();
return fToken;
}
scanner.unread();
return Token.UNDEFINED;
}
}
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