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/*******************************************************************************
* Copyright (c) 2006, Red Hat, Inc.
* Based on MacroReferenceRule which has the following copyright notice
*
* Copyright (c) 2000, 2006 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.internal.autotools.ui.editors.automake;
import org.eclipse.jface.text.rules.ICharacterScanner;
import org.eclipse.jface.text.rules.IToken;
import org.eclipse.jface.text.rules.PatternRule;
public class AutomakeMacroReferenceRule extends PatternRule {
int nOfBrackets;
int fBracket;
// public MacroReferenceRule(IToken token) {
// super("$(", ")", token, (char) 0, true); //$NON-NLS-1$ //$NON-NLS-2$
// }
public AutomakeMacroReferenceRule(IToken token, String startSeq, String endSeq) {
super(startSeq, endSeq, token, (char)0, true);
if (endSeq.length() > 0 && endSeq.charAt(0) == '}') {
fBracket = '{';
} else {
fBracket = '(';
}
}
protected IToken doEvaluate(ICharacterScanner scanner, boolean resume) {
nOfBrackets = 1;
return super.doEvaluate(scanner, resume);
}
protected boolean endSequenceDetected(ICharacterScanner scanner) {
int c;
char[][] delimiters = scanner.getLegalLineDelimiters();
while ((c = scanner.read()) != ICharacterScanner.EOF) {
if (fBracket == c) {
++nOfBrackets;
}
if (fEndSequence.length > 0 && c == fEndSequence[0]) {
// Check if the specified end sequence has been found.
if (sequenceDetected(scanner, fEndSequence, true)) {
if (0 == --nOfBrackets) {
return true;
}
}
} else if (fBreaksOnEOL) {
// Check for end of line since it can be used to terminate the pattern.
for (int i = 0; i < delimiters.length; i++) {
if (c == delimiters[i][0] && sequenceDetected(scanner, delimiters[i], false)) {
return true;
}
}
}
}
scanner.unread();
return false;
}
}
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