def test_contructor(self):
Note(MusicalPitch.new_from_notename("c'"),
Duration.new_from_string("4."))
self.assertRaises(AssertionError, Note, "4.",
MusicalPitch.new_from_notename("c'"))
self.assertRaises(AssertionError, Note, Duration.new_from_string("4."),
"c'")
def fill_skips(self, voice):
"""
Add Skips at the end of the bar, so that it is filled.
We assume that any elements already added are placed at
the correct timepos.
"""
# nt = short for "next timepos", the timepos to start fill skips to
if voice.get_timeposes_of(self):
nt = voice.get_timeposes_of(self)[-1]
nt = nt + voice.m_tdict[nt]['elem'][0].m_duration.get_rat_value()
else:
# we get here if the bar is empty
nt = self.m_timepos
default_skip = Rat(1, 4)
# pos within default skip
pp = nt - int (nt / default_skip) * default_skip
if pp != Rat(0, 1):
# Here we add a skip so that the next column will be X times
# default_skip
voice.set_elem([Skip(Duration.new_from_rat(default_skip - pp))],
nt)
nt += (default_skip - pp)
# And the we fill the bar with Skips as long as default_skip.
while nt < self.end():
voice.set_elem([Skip(Duration.new_from_rat(default_skip))], nt)
nt += default_skip
def test_contructor(self):
Note(MusicalPitch.new_from_notename("c'"),
Duration.new_from_string("4."))
self.assertRaises(AssertionError,
Note, "4.", MusicalPitch.new_from_notename("c'"))
self.assertRaises(AssertionError,
Note, Duration.new_from_string("4."), "c'")
def fill_skips(self, voice):
"""
Add Skips at the end of the bar, so that it is filled.
We assume that any elements already added are placed at
the correct timepos.
"""
# nt = short for "next timepos", the timepos to start fill skips to
if voice.get_timeposes_of(self):
nt = voice.get_timeposes_of(self)[-1]
nt = nt + voice.m_tdict[nt]['elem'][0].m_duration.get_rat_value()
else:
# we get here if the bar is empty
nt = self.m_timepos
default_skip = Rat(1, 4)
# pos within default skip
pp = nt - int(nt / default_skip) * default_skip
if pp != Rat(0, 1):
# Here we add a skip so that the next column will be X times
# default_skip
voice.set_elem([Skip(Duration.new_from_rat(default_skip - pp))],
nt)
nt += (default_skip - pp)
# And the we fill the bar with Skips as long as default_skip.
while nt < self.end():
voice.set_elem([Skip(Duration.new_from_rat(default_skip))], nt)
nt += default_skip
def test_tuplets(self):
n1 = Note(MusicalPitch.new_from_notename("g'"),
Duration(8, 0, Rat(2, 3)))
n2 = Note(MusicalPitch.new_from_notename("g'"),
Duration(8, 0, Rat(2, 3)))
n3 = Note(MusicalPitch.new_from_notename("g'"),
Duration(8, 0, Rat(2, 3)))
self.score.voice11.append(n1)
self.score.voice11.append(n2)
self.score.voice11.append(n3)
self.score.voice11.tuplet(Rat(2, 3), const.UP, [n1, n2, n3])
def test_misc(self):
d1 = Duration(4, 0, Rat(1, 1))
d2 = Duration(4, 1, Rat(1, 1))
self.assertFalse(d1 == d2)
self.assertEquals(d1.get_rat_value(), Rat(1, 4))
self.assertEquals(d2.get_rat_value(), Rat(3, 8))
d3 = Duration(4, 2, Rat(2, 3))
self.assertEquals(d3.get_rat_value(), Rat(7, 24))
def test_bar_fill_skips(self):
n1 = Note(MusicalPitch.new_from_notename("g'"), Duration(4, 0))
self.score.voice11.append(n1)
self.score.voice11.append(Rest(Duration.new_from_string("4")))
self.bp.fill_skips()
self.assertTrue(
isinstance(self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0], Note))
self.assertTrue(
isinstance(self.score.voice11.m_tdict[Rat(1, 4)]['elem'][0], Rest))
self.assertTrue(
isinstance(self.score.voice11.m_tdict[Rat(1, 2)]['elem'][0], Skip))
self.assertTrue(
isinstance(self.score.voice11.m_tdict[Rat(3, 4)]['elem'][0], Skip))
def __init__(self, duration, dots):
"""duration: integer 1 for 1/1 note 4 for 1/4 etc
"""
if duration:
self.m_duration = Duration(duration, dots, Rat(1, 1))
else:
self.m_duration = None
def __init__(self, s):
if not isinstance(s, str):
s = s.decode("utf-8")
assert isinstance(s, str)
self.m_string = s
self.m_notelen = Duration(4, 0)
self.m_idx = 0
self.m_last_idx = None
def test_bar_fill_skips(self):
n1 = Note(MusicalPitch.new_from_notename("g'"),
Duration(4, 0))
self.score.voice11.append(n1)
self.score.voice11.append(Rest(Duration.new_from_string("4")))
self.bp.fill_skips()
self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0], Note))
self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(1, 4)]['elem'][0], Rest))
self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(1, 2)]['elem'][0], Skip))
self.assertTrue(isinstance(self.score.voice11.m_tdict[Rat(3, 4)]['elem'][0], Skip))
def test_add_partial_bar(self):
self.score.add_partial_bar(Duration.new_from_string("4"), TimeSignature(4, 4))
self.score.add_bar(None)
self.assertEqual(self.score.m_bars[0].m_timepos, Rat(0, 1))
self.assertEqual(self.score.m_bars[0].end(), Rat(1, 4))
self.assertEqual(self.score.m_bars[1].m_timepos, Rat(1, 4))
self.assertEqual(self.score.get_bar_at(Rat(0, 1)), self.score.m_bars[0])
self.assertEqual(self.score.get_bar_at(Rat(1, 4)), self.score.m_bars[1])
self.score.voice11.append(Note.new_from_string("c4"))
self.score.voice11.append(Note.new_from_string("c1"))
self.score.voice11.append(Note.new_from_string("c1"))
def new_from_string(string):
s = string.strip()
m = re_melodic.match(s)
if m.end() < len(s) - 1:
# FIXME: raise ValueError like rest
raise Note.Exception("characters left in string", string)
return Note(
MusicalPitch.new_from_notename(
"%s%s" % (m.group('notename'), m.group('octave'))),
Duration.new_from_string("%s%s" %
(m.group('len'), m.group('dots'))))
def new_from_string(string):
s = string.strip()
m = re_melodic.match(s)
if m.end() < len(s) - 1:
# FIXME: raise ValueError like rest
raise Note.Exception("characters left in string", string)
return Note(
MusicalPitch.new_from_notename("%s%s" % (m.group('notename'),
m.group('octave'))),
Duration.new_from_string("%s%s" % (m.group('len'), m.group('dots')))
)
def test_misc(self):
d1=Duration(4, 0, Rat(1, 1))
d2=Duration(4, 1, Rat(1, 1))
self.assertFalse(d1 == d2)
self.assertEquals(d1.get_rat_value(), Rat(1, 4))
self.assertEquals(d2.get_rat_value(), Rat(3, 8))
d3=Duration(4, 2, Rat(2, 3))
self.assertEquals(d3.get_rat_value(), Rat(7, 24))
def test_add_partial_bar(self):
self.score.add_partial_bar(Duration.new_from_string("4"),
TimeSignature(4, 4))
self.score.add_bar(None)
self.assertEqual(self.score.m_bars[0].m_timepos, Rat(0, 1))
self.assertEqual(self.score.m_bars[0].end(), Rat(1, 4))
self.assertEqual(self.score.m_bars[1].m_timepos, Rat(1, 4))
self.assertEqual(self.score.get_bar_at(Rat(0, 1)),
self.score.m_bars[0])
self.assertEqual(self.score.get_bar_at(Rat(1, 4)),
self.score.m_bars[1])
self.score.voice11.append(Note.new_from_string("c4"))
self.score.voice11.append(Note.new_from_string("c1"))
self.score.voice11.append(Note.new_from_string("c1"))
def test_midigen_rest(self):
self.score.voice11.append(Note.new_from_string("c4"))
self.score.voice11.append(Rest(Duration.new_from_string("4")))
self.score.voice11.append(Note.new_from_string("c4"))
t = mpd.score_to_tracks(self.score)
self.assertEqual(t[0].str_repr(), "n48 d1/4 o48 d1/4 n48 d1/4 o48")
def test_set_from_rat(self):
for i in (1, 2, 4, 8, 16, 32, 64):
d = Duration.new_from_rat(Rat(1, i))
self.assertEquals(d, Duration(i, 0))
d = Duration.new_from_rat(Rat(3, 8))
self.assertEquals(d.get_rat_value(), Rat(3, 8))
def test_new_from_string(self):
d = Duration.new_from_string("4")
self.assertEquals(d.get_rat_value(), Rat(1, 4))
self.assertRaises(Duration.BadStringException,
Duration.new_from_string, "44x")
def test_constructor(self):
for a, b, f in ((1, 0, 1.0), (2, 0, 0.5), (2, 1, 0.75)):
d = Duration(a, b)
r = d.get_rat_value()
self.assertEquals(float(r), f)
def test_set_from_rat(self):
for i in (1, 2, 4, 8, 16, 32, 64):
d = Duration.new_from_rat(Rat(1, i))
self.assertEquals(d, Duration(i, 0))
d = Duration.new_from_rat(Rat(3, 8))
self.assertEquals(d.get_rat_value(), Rat(3, 8))
def test_add_rest(self):
self.score.voice11.append(Rest(Duration.new_from_string("8")))
self.assertIsInstance(self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0], Rest)
self.assertIsInstance(self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0].w_parent(), Voice)
def test_add_rest(self):
self.score.voice11.append(Rest(Duration.new_from_string("8")))
self.assertIsInstance(self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0],
Rest)
self.assertIsInstance(
self.score.voice11.m_tdict[Rat(0, 1)]['elem'][0].w_parent(), Voice)
def parse_to_score_object(music):
lexer = Lexer(music)
relative_mode = None
relto = None
transpose_pitch = None
TOPLEVEL = 1 # 'toplevel'
NOTES = 2 # 'notes'
START_OF_CHORD = 3 # 'start-of-chord'
CHORD = 4 # 'chord'
context = TOPLEVEL
score = elems.Score()
chord_duration = None
cur_duration = Duration(4, 0)
tie_is_in_the_air = 0
beam = None
# None when not parsing notes in a tuplet. Item 0 is the ration and 1.. is the notes
times = None
cur_staff = None
# we set it just so pyflakes does not complain.
relto_backup = None
# This variable is set to the duration of the pickup bar from we parse
# \partial nn until the bar has been created.
partial = None
for toc, toc_data in lexer:
try:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
except AttributeError:
pass
if toc == Lexer.STAFF:
assert context == TOPLEVEL
cur_staff = score.add_staff(elems.Staff)
cur_voice = cur_staff.m_voices[-1]
stem_dir = const.BOTH
tuplet_dir = const.BOTH
relative_mode = None
timepos = Rat(0)
last_pos = timepos
elif toc == Lexer.RHYTHMSTAFF:
assert context == TOPLEVEL
cur_staff = score.add_staff(elems.RhythmStaff)
cur_voice = cur_staff.m_voices[-1]
stem_dir = const.BOTH
tuplet_dir = const.BOTH
relative_mode = None
timepos = Rat(0)
last_pos = timepos
elif toc == Lexer.VOICE:
if not cur_staff:
raise ParseError("Don't use \\addvoice before \\staff", lexer)
relative_mode = None
timepos = Rat(0)
cur_voice = cur_staff.add_voice()
elif toc == Lexer.RELATIVE:
assert not relative_mode
relative_mode = 1
relto = toc_data
elif toc == Lexer.TRANSPOSE:
transpose_pitch = toc_data
elif toc == Lexer.PARTIAL:
partial = toc_data
elif toc == Lexer.TIME:
if not cur_staff:
raise ParseError("\\time can not be used before \\staff", lexer)
# FIXME
# Also now, we only allow the first voice to change time signatures
if cur_staff.m_voices.index(cur_voice) != 0:
raise ParseError("only timesig in first voice", lexer)
# FIXME: we are stricter with time signatures that both solfege 3.16
# and LilyPond
if not cur_voice.is_bar_full():
raise ParseError("timesig change only when bar is full!", lexer)
if partial:
score.add_partial_bar(partial, toc_data)
partial = None
else:
score.add_bar(toc_data)
elif toc == Lexer.KEY:
p = MusicalPitch.new_from_notename(toc_data[0])
if transpose_pitch:
p.transpose_by_musicalpitch(transpose_pitch)
k = (p.get_notename(), toc_data[1])
if not cur_staff:
raise ParseError("\\key can not be used before \\staff", lexer)
cur_staff.set_key_signature(k, timepos)
elif toc == Lexer.TIMES:
if not times:
times = [toc_data]
else:
raise ParseError(r"\times nn/nn does not nest", lexer)
elif toc == Lexer.CLEF:
try:
cur_staff.set_clef(toc_data, timepos)
except elems.UnknownClefException as e:
e.m_lineno, e.m_linepos1, e.m_linepos2 = lexer.get_error_location()
raise
elif toc == '|':
if timepos != score.get_bar_at(last_pos).end():
logging.warning("Bar check failed at %s", timepos)
elif toc == '{':
if (context == TOPLEVEL):
context = NOTES
# if not cur_staff.m_coldict[Rat(0, 1)].m_keysignature:
# FIXME dont understand
if transpose_pitch:
k = (transpose_pitch.get_notename(), 'major')
else:
k = ('c', 'major')
cur_voice.set_key_signature(k)
else:
raise ParseError("Token '{' not allowed here.", lexer)
elif toc == '<':
if context == NOTES:
context = START_OF_CHORD
else:
raise ParseError("Token '<' not allowed here.", lexer)
elif toc == '>':
if context == CHORD:
if tie_is_in_the_air:
# The 3.16-parser only handles ties between whole chords, not
# single tones of a chord.
if tie_is_in_the_air:
for last_note in cur_voice.m_tdict[last_pos]['elem']:
for cur_note in cur_voice.m_tdict[timepos]['elem']:
if last_note.m_musicalpitch.get_octave_notename() == cur_note.m_musicalpitch.get_octave_notename():
cur_voice.tie([last_note, cur_note])
tie_is_in_the_air = 0
last_pos = timepos
timepos = timepos + chord_duration.get_rat_value()
chord_duration = None
relto = relto_backup
relto_backup = None
context = NOTES
else:
raise ParseError("Token '>' not allowed here.", lexer)
elif toc == '}':
if context == NOTES:
if times:
cur_voice.tuplet(times[0], tuplet_dir, times[1:])
times = None
cur_duration.m_tuplet = Rat(1, 1)
else:
context = TOPLEVEL
else:
raise ParseError("Token '}' not allowed here.", lexer)
elif toc == '[':
beam = []
elif toc == ']':
cur_voice.beam(beam)
beam = None
elif toc == '~':
tie_is_in_the_air = 1
elif toc == Lexer.NOTE and (context in [NOTES, CHORD, START_OF_CHORD]):
# FIXME check if toc_data.m_duration will ever be undefined.
# If not we can do this: if not toc_data.m_duration:
if not getattr(toc_data, 'm_duration', None):
toc_data.m_duration = cur_duration.clone()
if times:
toc_data.m_duration.m_tuplet = times[0].clone()
if relative_mode:
toc_data.m_pitch = musicalpitch_relative(
relto, toc_data.m_pitch)
relto = toc_data.m_pitch.clone()
if transpose_pitch:
toc_data.transpose(transpose_pitch)
if partial:
score.add_partial_bar(partial, None)
partial = None
if context == NOTES:
note = elems.Note(toc_data.m_pitch, toc_data.m_duration)
try:
cur_voice.append(note, stem_dir)
except elems.Voice.BarFullException as e:
raise ParseError(str(e), lexer)
if beam is not None:
beam.append(note)
if times is not None:
times.append(note)
# The 3.16-parser only handles ties between whole chords, not
# single tones of a chord.
if tie_is_in_the_air:
for note in cur_voice.m_tdict[last_pos]['elem']:
for n in cur_voice.m_tdict[timepos]['elem']:
if n.m_musicalpitch.get_octave_notename() == note.m_musicalpitch.get_octave_notename():
cur_voice.tie([note, n])
tie_is_in_the_air = 0
last_pos = timepos
timepos = timepos + toc_data.m_duration.get_rat_value()
elif context == START_OF_CHORD:
cur_voice.append(elems.Note(toc_data.m_pitch, toc_data.m_duration), stem_dir)
relto_backup = relto
chord_duration = toc_data.m_duration
context = CHORD
elif context == CHORD:
cur_voice.add_to(timepos, elems.Note(toc_data.m_pitch, toc_data.m_duration))
elif toc == Lexer.SKIP and context == NOTES:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
else:
toc_data.m_duration = cur_duration.clone()
skip = elems.Skip(toc_data.m_duration)
cur_voice.append(skip)
last_pos = timepos
timepos = timepos + toc_data.m_duration.get_rat_value()
elif toc == Lexer.REST and context == NOTES:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
else:
toc_data.m_duration = cur_duration.clone()
rest = elems.Rest(toc_data.m_duration)
cur_voice.append(rest)
last_pos = timepos
timepos += toc_data.m_duration.get_rat_value()
elif toc == Lexer.STEMDIR:
stem_dir = toc_data
elif toc == Lexer.TUPLETDIR:
tuplet_dir = toc_data
else:
raise ParseError(toc, lexer)
return score
def new_from_string(string):
return Skip(Duration.new_from_string(string))
def test_constructor(self):
for a, b, f in ((1, 0, 1.0), (2, 0, 0.5), (2, 1, 0.75)):
d = Duration(a, b)
r = d.get_rat_value()
self.assertEquals(float(r), f)
def test_midigen_rest(self):
self.score.voice11.append(Note.new_from_string("c4"))
self.score.voice11.append(Rest(Duration.new_from_string("4")))
self.score.voice11.append(Note.new_from_string("c4"))
t = mpd.score_to_tracks(self.score)
self.assertEqual(t[0].str_repr(), "n48 d1/4 o48 d1/4 n48 d1/4 o48")
def parse_to_score_object(music):
lexer = Lexer(music)
relative_mode = None
relto = None
transpose_pitch = None
TOPLEVEL = 1 #'toplevel'
NOTES = 2 #'notes'
START_OF_CHORD = 3 #'start-of-chord'
CHORD = 4 #'chord'
context = TOPLEVEL
score = elems.Score()
chord_duration = None
cur_duration = Duration(4, 0)
tie_is_in_the_air = 0
beam = None
# None when not parsing notes in a tuplet. Item 0 is the ration and 1.. is the notes
times = None
cur_staff = None
# This variable is set to the duration of the pickup bar from we parse
# \partial nn until the bar has been created.
partial = None
for toc, toc_data in lexer:
try:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
except AttributeError:
pass
if toc == Lexer.STAFF:
assert context == TOPLEVEL
cur_staff = score.add_staff(elems.Staff)
cur_voice = cur_staff.m_voices[-1]
stem_dir = const.BOTH
tuplet_dir = const.BOTH
relative_mode = None
timepos = Rat(0)
last_pos = timepos
elif toc == Lexer.RHYTHMSTAFF:
assert context == TOPLEVEL
cur_staff = score.add_staff(elems.RhythmStaff)
cur_voice = cur_staff.m_voices[-1]
stem_dir = const.BOTH
tuplet_dir = const.BOTH
relative_mode = None
timepos = Rat(0)
last_pos = timepos
elif toc == Lexer.VOICE:
if not cur_staff:
raise ParseError("Don't use \\addvoice before \\staff", lexer)
relative_mode = None
timepos = Rat(0)
cur_voice = cur_staff.add_voice()
elif toc == Lexer.RELATIVE:
assert not relative_mode
relative_mode = 1
relto = toc_data
elif toc == Lexer.TRANSPOSE:
transpose_pitch = toc_data
elif toc == Lexer.PARTIAL:
partial = toc_data
elif toc == Lexer.TIME:
if not cur_staff:
raise ParseError(u"\\time can not be used before \\staff",
lexer)
# FIXME
# Also now, we only allow the first voice to change time signatures
if cur_staff.m_voices.index(cur_voice) != 0:
raise ParseError(u"only timesig in first voice", lexer)
# FIXME: we are stricter with time signatures that both solfege 3.16
# and LilyPond
if not cur_voice.is_bar_full():
raise ParseError(u"timesig change only when bar is full!",
lexer)
if partial:
score.add_partial_bar(partial, toc_data)
partial = None
else:
score.add_bar(toc_data)
elif toc == Lexer.KEY:
p = MusicalPitch.new_from_notename(toc_data[0])
if transpose_pitch:
p.transpose_by_musicalpitch(transpose_pitch)
k = (p.get_notename(), toc_data[1])
if not cur_staff:
raise ParseError(u"\\key can not be used before \\staff",
lexer)
cur_staff.set_key_signature(k, timepos)
elif toc == Lexer.TIMES:
if not times:
times = [toc_data]
else:
raise ParseError(r"\times nn/nn does not nest", lexer)
elif toc == Lexer.CLEF:
try:
cur_staff.set_clef(toc_data, timepos)
except elems.UnknownClefException, e:
e.m_lineno, e.m_linepos1, e.m_linepos2 = lexer.get_error_location(
)
raise
elif toc == '|':
if timepos != score.get_bar_at(last_pos).end():
logging.warning("Bar check failed at %s", timepos)
def _next(self):
# Doing this while loop inside the exception clause is a little
# faster than using a regular expression.
try:
while self.m_string[self.m_idx] in (' ', '\n', '\t'):
self.m_idx += 1
except IndexError:
raise StopIteration
self.m_last_idx = self.m_idx
m = self.re_rest.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
resttype, notelen, dots = m.groups()
numdots = len(dots)
if notelen:
notelen = int(notelen)
else:
notelen = 0
if numdots:
raise LexerError(
'Need a digit before dots. Write "%(goodcode)s", not "%(badcode)s".'
% {
'badcode':
m.group().strip(),
'goodcode':
'%s%i%s' % (resttype, self.m_notelen.m_nh, dots)
}, self)
if notelen is 0:
return self.REST, RestRequest(None, None)
else:
self.m_notelen = Duration(notelen, numdots)
return self.REST, RestRequest(notelen, numdots)
m = self.re_skip.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
IGN1, skiplen, dots = m.groups()
numdots = len(dots)
if skiplen:
skiplen = int(skiplen)
self.m_notelen = Duration(skiplen, numdots)
else:
skiplen = 0
if numdots:
raise LexerError(
'Need a digit before dots. Write "%(goodcode)s", not "%(badcode)s".'
% {
'badcode': m.group().strip(),
'goodcode': 's%i%s' % (self.m_notelen.m_nh, dots)
}, self)
if skiplen is 0:
return self.SKIP, SkipRequest(skiplen, numdots)
else:
self.m_notelen = Duration(skiplen, numdots)
return self.SKIP, SkipRequest(skiplen, numdots)
m = self.re_partial.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
num, dot = m.groups()
num = int(num)
dot = len(dot)
return self.PARTIAL, Duration(num, dot)
m = self.re_melodic.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
notename, IGN1, IGN2, notelen, dots = m.groups()
numdots = len(dots)
if notelen:
notelen = int(notelen)
self.m_notelen = Duration(notelen, numdots)
else:
notelen = 0
if dots:
raise LexerError(
'Need a digit before dots. Write "%(goodcode)s", not "%(badcode)s".'
% {
'badcode':
m.group().strip(),
'goodcode':
'%s%i%s' % (notename, self.m_notelen.m_nh, dots)
}, self)
n = MusicRequest(notename, notelen, numdots)
return self.NOTE, n
m = self.re_staff.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.STAFF, None
m = self.re_rhythmstaff.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.RHYTHMSTAFF, None
m = self.re_voice.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.VOICE, None
m = self.re_relative.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.RELATIVE, MusicalPitch.new_from_notename(m.group(1))
m = self.re_clef_quoted.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.CLEF, m.group(1)
m = self.re_clef.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.CLEF, m.group(1)
m = self.re_stem_updown.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
d = [const.UP, const.DOWN, const.BOTH][['Up', 'Down',
'Both'].index(m.group(2))]
return self.STEMDIR, d
m = self.re_tuplet_updown.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
d = [const.UP, const.DOWN, const.BOTH][['Up', 'Down',
'Both'].index(m.group(2))]
return self.TUPLETDIR, d
m = self.re_transpose.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.TRANSPOSE, MusicalPitch.new_from_notename(m.group(1))
m = self.re_time.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.TIME, elems.TimeSignature(int(m.group(1)),
int(m.group(2)))
m = self.re_key.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.KEY, (m.group(1), m.group(2))
m = self.re_times.match(self.m_string, self.m_idx)
if m:
self.m_idx = m.end()
return self.TIMES, Rat(int(m.groups()[0]), int(m.groups()[1]))
if self.m_idx == len(self.m_string):
raise StopIteration
self.m_idx += 1
return self.m_string[self.m_idx - 1], None
def test_single_tuplet(self):
n1 = Note(MusicalPitch.new_from_notename("g'"),
Duration(8, 0, Rat(2, 3)))
self.score.voice11.append(n1)
self.score.voice11.tuplet(Rat(2, 3), const.UP, [n1])
self.assertEqual(n1.w_parent().m_tupletinfo, 'end')
def test_new_from_string(self):
d = Duration.new_from_string("4")
self.assertEquals(d.get_rat_value(), Rat(1, 4))
self.assertRaises(Duration.BadStringException,
Duration.new_from_string, "44x")
def new_from_string(string):
return Rest(Duration.new_from_string(string))
def new_from_string(string):
return Rest(Duration.new_from_string(string))
def new_from_string(string):
return Skip(Duration.new_from_string(string))
def parse_to_score_object(music):
lexer = Lexer(music)
relative_mode = None
relto = None
transpose_pitch = None
TOPLEVEL = 1 # 'toplevel'
NOTES = 2 # 'notes'
START_OF_CHORD = 3 # 'start-of-chord'
CHORD = 4 # 'chord'
context = TOPLEVEL
score = elems.Score()
chord_duration = None
cur_duration = Duration(4, 0)
tie_is_in_the_air = 0
beam = None
# None when not parsing notes in a tuplet. Item 0 is the ration and 1.. is the notes
times = None
cur_staff = None
# we set it just so pyflakes does not complain.
relto_backup = None
# This variable is set to the duration of the pickup bar from we parse
# \partial nn until the bar has been created.
partial = None
for toc, toc_data in lexer:
try:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
except AttributeError:
pass
if toc == Lexer.STAFF:
assert context == TOPLEVEL
cur_staff = score.add_staff(elems.Staff)
cur_voice = cur_staff.m_voices[-1]
stem_dir = const.BOTH
tuplet_dir = const.BOTH
relative_mode = None
timepos = Rat(0)
last_pos = timepos
elif toc == Lexer.RHYTHMSTAFF:
assert context == TOPLEVEL
cur_staff = score.add_staff(elems.RhythmStaff)
cur_voice = cur_staff.m_voices[-1]
stem_dir = const.BOTH
tuplet_dir = const.BOTH
relative_mode = None
timepos = Rat(0)
last_pos = timepos
elif toc == Lexer.VOICE:
if not cur_staff:
raise ParseError("Don't use \\addvoice before \\staff", lexer)
relative_mode = None
timepos = Rat(0)
cur_voice = cur_staff.add_voice()
elif toc == Lexer.RELATIVE:
assert not relative_mode
relative_mode = 1
relto = toc_data
elif toc == Lexer.TRANSPOSE:
transpose_pitch = toc_data
elif toc == Lexer.PARTIAL:
partial = toc_data
elif toc == Lexer.TIME:
if not cur_staff:
raise ParseError("\\time can not be used before \\staff",
lexer)
# FIXME
# Also now, we only allow the first voice to change time signatures
if cur_staff.m_voices.index(cur_voice) != 0:
raise ParseError("only timesig in first voice", lexer)
# FIXME: we are stricter with time signatures that both solfege 3.16
# and LilyPond
if not cur_voice.is_bar_full():
raise ParseError("timesig change only when bar is full!",
lexer)
if partial:
score.add_partial_bar(partial, toc_data)
partial = None
else:
score.add_bar(toc_data)
elif toc == Lexer.KEY:
p = MusicalPitch.new_from_notename(toc_data[0])
if transpose_pitch:
p.transpose_by_musicalpitch(transpose_pitch)
k = (p.get_notename(), toc_data[1])
if not cur_staff:
raise ParseError("\\key can not be used before \\staff", lexer)
cur_staff.set_key_signature(k, timepos)
elif toc == Lexer.TIMES:
if not times:
times = [toc_data]
else:
raise ParseError(r"\times nn/nn does not nest", lexer)
elif toc == Lexer.CLEF:
try:
cur_staff.set_clef(toc_data, timepos)
except elems.UnknownClefException as e:
e.m_lineno, e.m_linepos1, e.m_linepos2 = lexer.get_error_location(
)
raise
elif toc == '|':
if timepos != score.get_bar_at(last_pos).end():
logging.warning("Bar check failed at %s", timepos)
elif toc == '{':
if (context == TOPLEVEL):
context = NOTES
# if not cur_staff.m_coldict[Rat(0, 1)].m_keysignature:
# FIXME dont understand
if transpose_pitch:
k = (transpose_pitch.get_notename(), 'major')
else:
k = ('c', 'major')
cur_voice.set_key_signature(k)
else:
raise ParseError("Token '{' not allowed here.", lexer)
elif toc == '<':
if context == NOTES:
context = START_OF_CHORD
else:
raise ParseError("Token '<' not allowed here.", lexer)
elif toc == '>':
if context == CHORD:
if tie_is_in_the_air:
# The 3.16-parser only handles ties between whole chords, not
# single tones of a chord.
if tie_is_in_the_air:
for last_note in cur_voice.m_tdict[last_pos]['elem']:
for cur_note in cur_voice.m_tdict[timepos]['elem']:
if last_note.m_musicalpitch.get_octave_notename(
) == cur_note.m_musicalpitch.get_octave_notename(
):
cur_voice.tie([last_note, cur_note])
tie_is_in_the_air = 0
last_pos = timepos
timepos = timepos + chord_duration.get_rat_value()
chord_duration = None
relto = relto_backup
relto_backup = None
context = NOTES
else:
raise ParseError("Token '>' not allowed here.", lexer)
elif toc == '}':
if context == NOTES:
if times:
cur_voice.tuplet(times[0], tuplet_dir, times[1:])
times = None
cur_duration.m_tuplet = Rat(1, 1)
else:
context = TOPLEVEL
else:
raise ParseError("Token '}' not allowed here.", lexer)
elif toc == '[':
beam = []
elif toc == ']':
cur_voice.beam(beam)
beam = None
elif toc == '~':
tie_is_in_the_air = 1
elif toc == Lexer.NOTE and (context in [NOTES, CHORD, START_OF_CHORD]):
# FIXME check if toc_data.m_duration will ever be undefined.
# If not we can do this: if not toc_data.m_duration:
if not getattr(toc_data, 'm_duration', None):
toc_data.m_duration = cur_duration.clone()
if times:
toc_data.m_duration.m_tuplet = times[0].clone()
if relative_mode:
toc_data.m_pitch = musicalpitch_relative(
relto, toc_data.m_pitch)
relto = toc_data.m_pitch.clone()
if transpose_pitch:
toc_data.transpose(transpose_pitch)
if partial:
score.add_partial_bar(partial, None)
partial = None
if context == NOTES:
note = elems.Note(toc_data.m_pitch, toc_data.m_duration)
try:
cur_voice.append(note, stem_dir)
except elems.Voice.BarFullException as e:
raise ParseError(str(e), lexer)
if beam is not None:
beam.append(note)
if times is not None:
times.append(note)
# The 3.16-parser only handles ties between whole chords, not
# single tones of a chord.
if tie_is_in_the_air:
for note in cur_voice.m_tdict[last_pos]['elem']:
for n in cur_voice.m_tdict[timepos]['elem']:
if n.m_musicalpitch.get_octave_notename(
) == note.m_musicalpitch.get_octave_notename():
cur_voice.tie([note, n])
tie_is_in_the_air = 0
last_pos = timepos
timepos = timepos + toc_data.m_duration.get_rat_value()
elif context == START_OF_CHORD:
cur_voice.append(
elems.Note(toc_data.m_pitch, toc_data.m_duration),
stem_dir)
relto_backup = relto
chord_duration = toc_data.m_duration
context = CHORD
elif context == CHORD:
cur_voice.add_to(
timepos, elems.Note(toc_data.m_pitch, toc_data.m_duration))
elif toc == Lexer.SKIP and context == NOTES:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
else:
toc_data.m_duration = cur_duration.clone()
skip = elems.Skip(toc_data.m_duration)
cur_voice.append(skip)
last_pos = timepos
timepos = timepos + toc_data.m_duration.get_rat_value()
elif toc == Lexer.REST and context == NOTES:
if toc_data.m_duration:
cur_duration = toc_data.m_duration.clone()
else:
toc_data.m_duration = cur_duration.clone()
rest = elems.Rest(toc_data.m_duration)
cur_voice.append(rest)
last_pos = timepos
timepos += toc_data.m_duration.get_rat_value()
elif toc == Lexer.STEMDIR:
stem_dir = toc_data
elif toc == Lexer.TUPLETDIR:
tuplet_dir = toc_data
else:
raise ParseError(toc, lexer)
return score
