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class Rest():
def __init__(self, duration=.25):
self.duration = duration
def __repr__(self):
return "Rest node %s" % self.duration
def parse(score):
def parse(score, default_octave=8):
# Tokenize (lex)
tokens = (
"NOTE_LENGTH",
"BASENOTE",
"ACCIDENTAL",
"REST",
"OCTAVE",
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p[2].accidental = p[1]
p[0] = p[2]
def p_octave(p):
'''pitch : pitch OCTAVE
'''
count = len(p[2])
increment_or_decrement = 1 if p[2][0] == "," else -1
octave = 8 + (count * increment_or_decrement)
increment_or_decrement = 1 if p[2][0] == "'" else -1
octave = p[1].octave + (count * increment_or_decrement)
p[1].octave = octave
p[0] = p[1]
def p_pitch(p):
'''pitch : BASENOTE
'''
p[0] = Note(p[1])
p[0] = Note(p[1], octave=default_octave)
def p_rest(p):
''' rest : REST
| REST NOTE_LENGTH
'''
p[0] = Rest()
if len(p) > 2:
|