private int getValue(List<StepValue<Integer>> list, int step) {
Integer value = BDXUtil.getValueWithStep(list, step, true);
if (value == null) {
return 0;
}
return value;
}
public List<Chord> getChordSet(int step) {
if (_type != InstrumentType.GUITAR && _type != InstrumentType.PIANO) {
throw new IllegalStateException();
}
List<Chord> chordSet = BDXUtil.getValueWithStep(_chordSetList, step, true);
if (chordSet == null) {
return Collections.emptyList();
}
return chordSet;
}
public Clef getClef(int step) {
if (_type != InstrumentType.SINGLE) {
throw new IllegalStateException();
}
return BDXUtil.getValueWithStep(_clef, step, true);
}
public Voicing getVoicing(int step) {
if (_type != InstrumentType.PIANO) {
throw new IllegalStateException();
}
return BDXUtil.getValueWithStep(_voicing, step, true);
}
