def exec(self, symbols_scope: SymbolsScope, context: Context, *args,
**kargs):
forked = context.fork(symbols=symbols_scope.fork())
forked.symbols.assign('__callerctx__', context, local=True)
for variable_name in self.using:
forked.symbols.using(variable_name)
for i in range(len(self.arguments)):
(name, arg_mod, default_value) = self.arguments[i]
argument_node, default_node = None, default_value
if len(args) > i:
argument_node = args[i]
elif name in kargs:
argument_node = kargs[name]
elif default_value == None:
raise Exception(f"Mandatory argument { name } was not given.")
if arg_mod == 'expr':
forked.symbols.assign(name, argument_node)
elif (arg_mod == 'ref'
or arg_mod == 'in') and argument_node is not None:
is_variable = isinstance(argument_node, VariableExpressionNode)
if arg_mod == 'ref' and not is_variable:
raise BaseException(
f"Only variable references can be passed to a function (function { self.name }, parameter { name })"
)
# TODO: Should ref pointers be shallow? Since ref can mutate
# the value, it could be sensible for them to be so
if is_variable:
pointer = context.symbols.pointer(argument_node.name)
if pointer is None:
context.symbols.assign(argument_node.name, None)
else:
forked.symbols.using(pointer, name)
else:
forked.symbols.assign(
name,
Value.assignment(argument_node.eval(context.fork())))
else:
if argument_node is not None:
value = Value.assignment(argument_node.eval(
context.fork()))
else:
value = Value.assignment(default_node.eval(forked.fork()))
value = forked.symbols.assign(name, value)
return self.body.eval(forked)
def values(self, context: Context):
condition_value = self.condition.eval(context)
while condition_value:
forked = context.fork(symbols=context.symbols.fork(opaque=False))
yield self.body.eval(forked)
context.join(forked)
condition_value = self.condition.eval(context)
def __eval__(self, context: Context):
forked = context.fork(symbols=context.symbols.fork(
opaque=False)) if self.fork_context else context
try:
if self.create_stack_frame:
return self.body.eval(forked)
else:
return self.body.child.eval(forked)
finally:
context.join(forked)
def __eval__(self, context: Context, assignment: bool = False):
if self.expression is None:
return None
forked = context.fork()
value = self.expression.eval(forked)
if isinstance(value, Music):
return Music(self.get_events(context, forked, value))
else:
context.join(forked)
return value
def modify(self, context: Context):
if self.upper != None or self.lower != None:
context.voice = context.voice.clone(time_signature=(self.upper,
self.lower))
elif self.upper != None:
context.voice = context.voice.clone(
time_signature=(self.upper, context.time_signature[1]))
elif self.lower != None:
context.voice = context.voice.clone(
time_signature=(context.time_signature[0], self.lower))
yield ContextChangeEvent(context.cursor, "timeSignature",
context.voice.time_signature, context.voice,
0)
def function_to_mkl(context: Context,
music: Music,
ast: bool = False,
nameless_voices: bool = True,
declare_voices: bool = True,
base_voice: Voice = None) -> Union[str, Node]:
source: Box[str] = Box("")
inp, out = Transformer.pipeline2(
VoiceIdentifierTransformer(),
MusiklaNotationBuilderTransformer(only_final=True,
ast=ast,
context=context,
nameless_voices=nameless_voices,
declare_voices=declare_voices,
base_voice=base_voice),
)
out.subscribe(lambda s: source.set(s))
for ev in music.expand(context.fork(cursor=0)):
inp.add_input(ev)
inp.end_input()
return source.value
def function_save(context: Context, music: Music,
outputs: Union[str, Sequencer, List[SequencerLike]]) -> Any:
# The single parameter specifies if only one sequencer was given
# In that case, instead of returning an array, we return just the sequencer
single: bool = False
if type(outputs) is str or isinstance(outputs, Sequencer):
sequencers: List[Sequencer] = [
function_make_sequencer(context, outputs)
]
single = True
else:
sequencers: List[Sequencer] = [
function_make_sequencer(context, seq) for seq in outputs
]
for seq in sequencers:
seq.realtime = False
seq.start()
for ev in music.expand(context.fork(cursor=0)):
for seq in sequencers:
seq.register_event(ev)
for seq in sequencers:
seq.close()
if single:
return sequencers[0]
return sequencers
def modify(self, context: Context):
context.voice = context.voice.clone(
instrument=Instrument.from_program(self.instrument))
yield ContextChangeEvent(context.cursor, "instrument",
context.voice.instrument.program,
context.voice, 0)
def function_make_sequencer(context: Context,
sequencer: SequencerLike) -> Sequencer:
std = cast(StandardLibrary, context.library(StandardLibrary))
format = None
uri = None
args = None
if type(sequencer) is str:
uri = sequencer
elif type(sequencer) is list:
args_start = 0
if len(sequencer) >= args_start + 2 and sequencer[args_start] == '-o':
uri = sequencer[args_start + 1]
args_start += 2
if len(sequencer) >= args_start + 2 and sequencer[args_start] == '-f':
format = sequencer[args_start + 1]
args_start += 2
args = sequencer[args_start:]
elif isinstance(sequencer, Sequencer):
return sequencer
if format is not None:
return std.player.make_sequencer_from_format(format, uri or "", args
or [])
return std.player.make_sequencer_from_uri(uri or "", args or [])
def __init__(self,
only_final: bool = False,
ast: bool = False,
context: Context = None,
nameless_voices: bool = True,
declare_voices: bool = True,
base_voice: Voice = None):
"""
only_final When true, the result is only emitted after the entire
input (musical sequence) has been processed. When false,
intermediate notations are continuously emitted.
ast When true, emits the Abstract Syntax Tree objects. When
false, transforms those objects into a string that can
be parsed, and emits the string instead
nameless_voices When true, it tries to produce notation that carries with
it any state that is needed, instead of prepending
the names of the voices the events belonged to
declare_voices When `nameless_voices = False`, also include the
definitions of the named voices used.
base_voice ...
"""
super().__init__(only_final)
self.ast: bool = ast
self.context: Context = context or Context.create()
self.nameless_voices: bool = nameless_voices
self.declare_voices: bool = declare_voices
self.base_voice: Voice = base_voice or Voice()
def keyboard_close ( context : Context, keyboard : Keyboard ):
if keyboard != None:
keyboard.close()
else:
lib : KeyboardLibrary = cast( KeyboardLibrary, context.library( KeyboardLibrary ) )
lib.close()
def function_voices_create(context: Context,
name: str,
modifiers: Node = None,
inherit: Voice = None):
if inherit != None:
pass
voice = Voice(name, Instrument(name, 1))
forked = context.fork()
forked.voice = voice
if inherit != None:
voice.instrument = inherit.instrument
voice.time_signature = inherit.time_signature
voice.velocity = inherit.velocity
voice.octave = inherit.octave
voice.value = inherit.value
voice.tempo = inherit.tempo
if modifiers != None:
if isinstance(modifiers, MusicSequenceNode):
for modifier in modifiers:
if isinstance(modifier, ContextModifierNode):
modifier.apply(voice)
else:
modifier.eval(forked)
else:
if isinstance(modifiers, ContextModifierNode):
modifiers.apply(voice)
else:
modifiers.eval(forked)
return voice
def create_context ( self, player : Player ):
ctx = Context.create()
ctx.link( StandardLibrary() )
ctx.link( MusicLibrary() )
ctx.link( KeyboardLibrary( player ) )
return ctx
def function_discard(context: Context, *expr):
for e in expr:
value = e.eval(context.fork())
if isinstance(value, Music):
for _ in value:
pass
return None
def function_debug(context: Context, expr):
value = expr.eval(context.fork())
if value is None:
print(None)
elif isinstance(value, Music):
print('<Music> ' +
' '.join(str(event) for event in value.expand(context)))
else:
print("<%s>%s" % (Value.typeof(value), value))
def function_readmidi(context: Context,
file: str = None,
port: Union[str, List[str], bool] = None,
voices: List[Voice] = None,
cutoff_sequence=None,
ignore_message_types: List[str] = None):
if file is not None:
mid = mido.MidiFile(file)
return read_midi_file(context, mid, voices, cutoff_sequence,
ignore_message_types)
else:
if port == True:
default_port = context.library(
MidiLibrary).get_midi_default_input()
if default_port is None:
port = mido.open_input()
else:
port = mido.open_input(default_port)
elif type(port) == str:
port = mido.open_input(port)
elif type(port) == list:
port = MultiPort([mido.open_input(p) for p in port])
events = midi_stream_to_music(context, port, context.voice,
ignore_message_types)
events = ComposeNotesTransformer.iter(events)
if cutoff_sequence != None:
events = TerminationMelodyTransformer.iter(
events, list(cutoff_sequence.expand(context.fork(cursor=0))))
events = TeeTransformer.iter(
events,
Transformer.pipeline(
VoiceIdentifierTransformer(),
MusiklaNotationBuilderTransformer(),
Transformer.subscriber(lambda n: print(n + '\n\n'))))
return Music(list(events))
def __init__(self, event: Union[Music, NoteEvent, Note, None]):
super().__init__()
if isinstance(event, Music):
event = event.first_note(Context())
if isinstance(event, NoteEvent):
event = event.note
if event is None:
raise Exception("Cannot create PianoKey of None")
self.note: Note = event.timeless()
def keyboard_filedialog ( context : Context, title : str = "File", text : str = "File Path:", default_value : str = None, cb = None ):
from prompt_toolkit.patch_stdout import patch_stdout
from prompt_toolkit.shortcuts import input_dialog
from prompt_toolkit.completion import PathCompleter
lib : KeyboardLibrary = cast( KeyboardLibrary, context.library( KeyboardLibrary ) )
def _run ():
with patch_stdout():
application = input_dialog( title = title, text = text, completer = PathCompleter() )
with application.input.raw_mode():
application.input.read_keys()
application.layout.current_control.buffer.insert_text(default_value or "")
return application.run_async()
lib.prompt( _run, cb )
def __eval__(self, context: Context):
val = Value.assignment(self.right.eval(context.fork(cursor=0)))
if self.operator is None or self.operator == "":
self.left.assign(context, val, local=self.local)
else:
def _set(value):
nonlocal val
# value = context.symbols.lookup( self.name, recursive = not self.local )
if self.operator == '*': value *= val
elif self.operator == '/': value /= val
elif self.operator == '+': value += val
elif self.operator == '-': value -= val
elif self.operator == '&': value &= val
elif self.operator == '|': value |= val
else: raise Exception("Invalid operator: " + self.operator)
return value
self.left.lookup_assign(context, _set, local=self.local)
return None
def __eval__(self, context: Context):
val = Value.assignment(self.right.eval(context.fork(cursor=0)))
for i, op in enumerate(self.left):
if self.operator is None or self.operator == "":
op.assign(context, val[i], local=self.local)
else:
def _set(value):
nonlocal val
if self.operator == '*': value *= val[i]
elif self.operator == '/': value /= val[i]
elif self.operator == '+': value += val[i]
elif self.operator == '-': value -= val[i]
elif self.operator == '&': value &= val[i]
elif self.operator == '|': value |= val[i]
else: raise Exception("Invalid operator: " + self.operator)
return value
op.lookup_assign(context, _set, local=self.local)
return None
def function_set_midi_input_name(context: Context, name: str):
context.library(MidiLibrary).set_midi_default_input(name)
def keyboard_readperf ( context : Context, file : str, keyboards : List[Keyboard] = None ) -> Music:
lib : KeyboardLibrary = cast( KeyboardLibrary, context.library( KeyboardLibrary ) )
return lib.readperf( context, file, keyboards )
def function_get_midi_input_name(context: Context) -> str:
return context.library(MidiLibrary).get_midi_default_input()
def setUp(self):
self.parser = parser
self.context = Context.create()
self.context.link(StandardLibrary(None))
def modify(self, context: Context):
context.voice = context.voice.clone(value=self.length)
yield ContextChangeEvent(context.cursor, "length", context.voice.value,
context.voice, 0)
def modify ( self, context : Context ):
context.voice = context.voice.clone( tempo = self.tempo )
yield ContextChangeEvent( context.cursor, "tempo", context.voice.tempo, context.voice, 0 )
def keyboard_open_repl ( context : Context ):
lib : KeyboardLibrary = cast( KeyboardLibrary, context.library( KeyboardLibrary ) )
lib.eval( context )
return None
def function_setvoice(context: Context, voice: Voice):
context.voice = voice
def function_settime(context: Context, time: int):
context.cursor = time
def keyboard_replay ( context : Context, file : str ):
lib : KeyboardLibrary = cast( KeyboardLibrary, context.library( KeyboardLibrary ) )
lib.replay( file )