/*
* JFugue, an Application Programming Interface (API) for Music Programming
* http://www.jfugue.org
*
* Copyright (C) 2003-2014 David Koelle
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.staccato;
/**
* Catches bar lines
*
* @author dkoelle
*/
public class BarLineSubparser implements Subparser
{
public static final char BARLINE = '|';
private static BarLineSubparser instance;
public static BarLineSubparser getInstance() {
if (instance == null) {
instance = new BarLineSubparser();
}
return instance;
}
@Override
public boolean matches(String music) {
return music.charAt(0) == BARLINE;
}
@Override
public int parse(String music, StaccatoParserContext context) {
if (music.charAt(0) == BARLINE) {
int posNextSpace = StaccatoUtil.findNextOrEnd(music, ' ', 0);
long measure = -1;
if (posNextSpace > 1) {
String barId = music.substring(1, posNextSpace);
if (barId.matches("\\d+")) {
measure = Long.parseLong(barId);
} else {
measure = (Long)context.getDictionary().get(barId);
}
}
context.getParser().fireBarLineParsed(measure);
return Math.max(1, posNextSpace);
}
return 0;
}
}