542 lines
16 KiB
Python
542 lines
16 KiB
Python
""" Lark transformer for mapping Lark tokens to Ziffers objects """
|
|
import random
|
|
from math import log, pow
|
|
from lark import Transformer, Token
|
|
from .scale import cents_to_semitones, ratio_to_cents
|
|
from .classes.root import Ziffers
|
|
from .classes.sequences import (
|
|
Sequence,
|
|
ListSequence,
|
|
RepeatedListSequence,
|
|
ListOperation,
|
|
RepeatedSequence,
|
|
Euclid,
|
|
Subdivision,
|
|
Eval,
|
|
)
|
|
from .classes.items import (
|
|
Whitespace,
|
|
DurationChange,
|
|
OctaveChange,
|
|
OctaveAdd,
|
|
Pitch,
|
|
Rest,
|
|
RandomPitch,
|
|
RandomPercent,
|
|
Chord,
|
|
RomanNumeral,
|
|
Cyclic,
|
|
RandomInteger,
|
|
Range,
|
|
Operator,
|
|
Operation,
|
|
Atom,
|
|
Integer,
|
|
VariableAssignment,
|
|
Variable,
|
|
VariableList,
|
|
Measure,
|
|
)
|
|
from .common import flatten, sum_dict
|
|
from .defaults import DEFAULT_DURS, OPERATORS
|
|
from .scale import parse_roman
|
|
|
|
|
|
# pylint: disable=locally-disabled, unused-argument, too-many-public-methods, invalid-name
|
|
class ZiffersTransformer(Transformer):
|
|
"""Rules for transforming Ziffers expressions into tree."""
|
|
|
|
def start(self, items) -> Ziffers:
|
|
"""Root for the rules"""
|
|
return Ziffers(values=items[0], options={})
|
|
|
|
def sequence(self, items):
|
|
"""Flatten sequence"""
|
|
return flatten(items)
|
|
|
|
def rest(self, items):
|
|
"""Return duration event"""
|
|
if len(items) > 0:
|
|
prefixes = sum_dict(items)
|
|
text_prefix = prefixes.pop("text")
|
|
prefixes["prefix"] = text_prefix
|
|
return Rest(text=text_prefix + "r", local_options=prefixes)
|
|
return Rest(text="r")
|
|
|
|
def measure(self, items):
|
|
"""Return new measure"""
|
|
return Measure()
|
|
|
|
def random_integer(self, items) -> RandomInteger:
|
|
"""Parses random integer syntax"""
|
|
if len(items) > 1:
|
|
prefixes = sum_dict(items[0:-1]) # If there are prefixes
|
|
text_prefix = prefixes.pop("text")
|
|
prefixes["prefix"] = text_prefix
|
|
val = items[-1][1:-1].split(",")
|
|
return RandomInteger(
|
|
min=int(val[0]),
|
|
max=int(val[1]),
|
|
text=text_prefix + items[-1],
|
|
local_options=prefixes,
|
|
)
|
|
else:
|
|
val = items[0][1:-1].split(",")
|
|
return RandomInteger(min=int(val[0]), max=int(val[1]), text=items[0])
|
|
|
|
def random_integer_re(self, items):
|
|
"""Return random integer notation from regex"""
|
|
return items[0].value
|
|
|
|
def range(self, items) -> Range:
|
|
"""Parses range syntax"""
|
|
if len(items) > 1:
|
|
prefixes = sum_dict(items[0:-1]) # If there are prefixes
|
|
text_prefix = prefixes.pop("text")
|
|
prefixes["prefix"] = text_prefix
|
|
val = items[-1].split("..")
|
|
return Range(
|
|
start=int(val[0]),
|
|
end=int(val[1]),
|
|
text=text_prefix + items[-1],
|
|
local_options=prefixes,
|
|
)
|
|
# Else
|
|
val = items[0].split("..")
|
|
return Range(start=int(val[0]), end=int(val[1]), text=items[0])
|
|
|
|
def range_re(self, items):
|
|
"""Return range value from regex"""
|
|
return items[0].value
|
|
|
|
def cycle(self, items) -> Cyclic:
|
|
"""Parses cycle"""
|
|
values = items[0]
|
|
return Cyclic(values=values)
|
|
|
|
def pitch_class(self, items):
|
|
"""Parses pitch class"""
|
|
|
|
# If there are prefixes
|
|
if len(items) > 1:
|
|
# Collect&sum prefixes from any order: _qee^s4 etc.
|
|
prefixes = sum_dict(items[0:-1]) # If there are prefixes
|
|
text_prefix = prefixes.pop("text")
|
|
prefixes["prefix"] = text_prefix
|
|
pitch = Pitch(
|
|
pitch_class=items[-1]["pitch_class"],
|
|
text=text_prefix + items[-1]["text"],
|
|
local_options=prefixes,
|
|
)
|
|
return pitch
|
|
|
|
val = items[0]
|
|
return Pitch(**val)
|
|
|
|
def pitch(self, items):
|
|
"""Return pitch class info"""
|
|
text_value = items[0].value.replace("T", "10").replace("E", "11")
|
|
return {"pitch_class": int(text_value), "text": items[0].value}
|
|
|
|
def prefix(self, items):
|
|
"""Return prefix"""
|
|
return items[0]
|
|
|
|
def oct_change(self, items):
|
|
"""Parses octave change"""
|
|
octave = items[0]
|
|
return [
|
|
OctaveChange(value=octave["octave_change"], text=octave["text"]),
|
|
items[1],
|
|
]
|
|
|
|
def oct_mod(self, items):
|
|
"""Parses octave modification"""
|
|
octave = items[0]
|
|
return [OctaveAdd(value=octave["octave"], text=octave["text"]), items[1]]
|
|
|
|
def escaped_octave(self, items):
|
|
"""Return octave info"""
|
|
value = items[0][1:-1]
|
|
return {"octave_change": int(value), "text": items[0].value}
|
|
|
|
def octave(self, items):
|
|
"""Return octaves ^ and _"""
|
|
value = sum(1 if char == "^" else -1 for char in items[0].value)
|
|
return {"octave": value, "text": items[0].value}
|
|
|
|
def modifier(self, items):
|
|
"""Return modifiers # and b"""
|
|
value = 1 if items[0].value == "#" else -1
|
|
return {"modifier": value, "text": items[0].value}
|
|
|
|
def chord(self, items):
|
|
"""Parses chord"""
|
|
if isinstance(items[-1], Token):
|
|
return Chord(
|
|
pitch_classes=items[0:-1],
|
|
text="".join([val.text for val in items[0:-1]]),
|
|
inversions=int(items[-1].value[1:]),
|
|
)
|
|
return Chord(pitch_classes=items, text="".join([val.text for val in items]))
|
|
|
|
def invert(self, items):
|
|
"""Return chord inversion"""
|
|
return items[0]
|
|
|
|
def named_roman(self, items) -> RomanNumeral:
|
|
"""Parse chord from roman numeral"""
|
|
numeral = items[0].value
|
|
# TODO: Refactor this and the rule
|
|
if len(items) == 1:
|
|
return RomanNumeral(value=parse_roman(numeral), text=numeral)
|
|
if len(items) > 2:
|
|
name = items[1]
|
|
inversions = int(items[-1].value[1:])
|
|
return RomanNumeral(
|
|
text=numeral,
|
|
value=parse_roman(numeral),
|
|
chord_type=name,
|
|
inversions=inversions,
|
|
)
|
|
elif len(items) == 2:
|
|
if isinstance(items[-1], Token):
|
|
inversions = int(items[-1].value[1:])
|
|
return RomanNumeral(
|
|
value=parse_roman(numeral),
|
|
text=numeral,
|
|
inversions=inversions,
|
|
)
|
|
else:
|
|
return RomanNumeral(
|
|
value=parse_roman(numeral), text=numeral, chord_type=items[1]
|
|
)
|
|
|
|
def chord_name(self, item):
|
|
"""Return name for chord"""
|
|
return item[0].value
|
|
|
|
def roman_number(self, item):
|
|
"""Return roman numeral"""
|
|
return item[0]
|
|
|
|
def dur_change(self, items):
|
|
"""Parses duration change"""
|
|
durs = items[0]
|
|
return DurationChange(value=durs["duration"], text=durs["text"])
|
|
|
|
def char_change(self, items):
|
|
"""Return partial duration char info"""
|
|
chars = ""
|
|
durs = 0.0
|
|
for dchar, dots in items:
|
|
val = DEFAULT_DURS[dchar]
|
|
if dots > 0:
|
|
val = val * (2.0 - (1.0 / (2 * dots)))
|
|
chars = chars + (dchar + "." * dots)
|
|
durs = durs + val
|
|
return {"text": chars, "duration": durs}
|
|
|
|
def dchar_not_prefix(self, items):
|
|
"""Return partial duration char info"""
|
|
dur = items[0].split(".", 1)
|
|
dots = 0
|
|
if len(dur) > 1:
|
|
dots = len(dur[1]) + 1
|
|
return [dur[0], dots]
|
|
|
|
def escaped_decimal(self, items):
|
|
"""Return partial decimal info"""
|
|
val = items[0]
|
|
val["text"] = "<" + val["text"] + ">"
|
|
return val
|
|
|
|
def random_pitch(self, items):
|
|
"""Parses random pitch"""
|
|
return RandomPitch(text="?")
|
|
|
|
def random_percent(self, items):
|
|
"""Parses random percent"""
|
|
return RandomPercent(text="%")
|
|
|
|
def duration_chars(self, items):
|
|
"""Return partial duration info"""
|
|
durations = [val[1] for val in items]
|
|
characters = "".join([val[0] for val in items])
|
|
return {"duration": sum(durations), "text": characters}
|
|
|
|
def dotted_dur(self, items):
|
|
"""Return partial duration info"""
|
|
key = items[0]
|
|
val = DEFAULT_DURS[key]
|
|
dots = len(items) - 1
|
|
if dots > 0:
|
|
val = val * (2.0 - (1.0 / (2 * dots)))
|
|
return [key + "." * dots, val]
|
|
|
|
def decimal(self, items):
|
|
"""Return partial duration info"""
|
|
val = items[0]
|
|
return {"duration": float(val), "text": val.value}
|
|
|
|
def dot(self, items):
|
|
"""Return partial duration info"""
|
|
return "."
|
|
|
|
def dchar(self, items):
|
|
"""Return partial duration info"""
|
|
chardur = items[0].value
|
|
return chardur
|
|
|
|
def WS(self, items):
|
|
"""Parse whitespace"""
|
|
return Whitespace(text=items[0])
|
|
|
|
def subdivision(self, items):
|
|
"""Parse subdivision"""
|
|
values = flatten(items[0])
|
|
return Subdivision(values=values, wrap_start="[", wrap_end="]")
|
|
|
|
def subitems(self, items):
|
|
"""Return subdivision items"""
|
|
return items
|
|
|
|
# Eval rules
|
|
|
|
def eval(self, items):
|
|
"""Parse eval"""
|
|
val = items[0]
|
|
return Eval(values=val)
|
|
|
|
def sub_operations(self, items):
|
|
"""Returns list of operations"""
|
|
return Eval(values=items[0], wrap_start="(", wrap_end=")")
|
|
|
|
def operation(self, items):
|
|
"""Return partial eval operations"""
|
|
return flatten(items)
|
|
|
|
def atom(self, token):
|
|
"""Return partial eval item"""
|
|
val = token[0].value
|
|
return Atom(value=val, text=val)
|
|
|
|
# Variable assignment
|
|
|
|
def assignment(self, items):
|
|
"""Creates variable assignment"""
|
|
var = items[0]
|
|
op = items[1]
|
|
content = items[2]
|
|
return VariableAssignment(
|
|
variable=var,
|
|
value=content,
|
|
text=var.text + "=" + content.text,
|
|
pre_eval=True if op == "=" else False,
|
|
)
|
|
|
|
def ass_op(self, items):
|
|
"""Return parsed type for assignment: = or ~"""
|
|
return items[0].value
|
|
|
|
def variable(self, items):
|
|
if len(items) > 1:
|
|
prefixes = sum_dict(items[0:-1])
|
|
text_prefix = prefixes.pop("text")
|
|
return Variable(
|
|
name=items[-1], text=text_prefix + items[-1], local_options=prefixes
|
|
)
|
|
return Variable(name=items[0], text=items[0])
|
|
|
|
def variable_char(self, items):
|
|
"""Return parsed variable name"""
|
|
return items[0].value # Variable(name=items[0].value, text=items[0].value)
|
|
|
|
def variablelist(self, items):
|
|
"""Return list of variables"""
|
|
return VariableList(values=items, text="".join([item.text for item in items]))
|
|
|
|
# List rules
|
|
|
|
def list(self, items):
|
|
"""Parse list sequence notation, ex: (1 2 3)"""
|
|
if len(items) > 1:
|
|
prefixes = sum_dict(items[0:-1])
|
|
text_prefix = prefixes.pop("text")
|
|
prefixes["prefix"] = text_prefix
|
|
values = items[-1]
|
|
seq = ListSequence(
|
|
values=values,
|
|
wrap_start=prefixes["prefix"] + "(",
|
|
local_options=prefixes,
|
|
)
|
|
return seq
|
|
else:
|
|
seq = ListSequence(values=items[0])
|
|
return seq
|
|
|
|
def repeated_list(self, items):
|
|
"""Parse repeated list notation ex: (: 1 2 3 :)"""
|
|
if len(items) > 2:
|
|
prefixes = sum_dict(items[0:-2]) # If there are prefixes
|
|
if items[-1] is not None:
|
|
seq = RepeatedListSequence(
|
|
values=items[-2],
|
|
repeats=items[-1],
|
|
wrap_end=":" + items[-1].text + ")",
|
|
local_options=prefixes,
|
|
)
|
|
else:
|
|
seq = RepeatedListSequence(
|
|
values=items[-2],
|
|
repeats=Integer(text="2", value=2, local_options=prefixes),
|
|
)
|
|
return seq
|
|
else:
|
|
if items[-1] is not None:
|
|
seq = RepeatedListSequence(
|
|
values=items[-2],
|
|
repeats=items[-1],
|
|
wrap_end=":" + items[-1].text + ")",
|
|
)
|
|
else:
|
|
seq = RepeatedListSequence(
|
|
values=items[-2], repeats=Integer(text="2", value=2)
|
|
)
|
|
return seq
|
|
|
|
def NUMBER(self, token):
|
|
"""Parse integer"""
|
|
val = token.value
|
|
return Integer(text=val, value=int(val))
|
|
|
|
def number(self, item):
|
|
"""Return partial number (Integer or RandomInteger)"""
|
|
return item[0]
|
|
|
|
def cyclic_number(self, item):
|
|
"""Parse cyclic notation"""
|
|
return Cyclic(values=item)
|
|
|
|
def lisp_operation(self, items):
|
|
"""Parse lisp like list operation"""
|
|
op = items[0]
|
|
values = items[1:]
|
|
return Operation(
|
|
operator=op,
|
|
values=values,
|
|
text="(+" + "".join([v.text for v in values]) + ")",
|
|
)
|
|
|
|
def operator(self, token):
|
|
"""Parse operator"""
|
|
val = token[0].value
|
|
return Operator(text=val, value=OPERATORS[val])
|
|
|
|
def list_items(self, items):
|
|
"""Parse sequence"""
|
|
return Sequence(values=items)
|
|
|
|
def list_op(self, items):
|
|
"""Parse list operation"""
|
|
return ListOperation(values=items)
|
|
|
|
def right_op(self, items):
|
|
"""Get right value for the operation"""
|
|
return items[0]
|
|
|
|
def euclid(self, items):
|
|
"""Parse euclid notation"""
|
|
params = items[1][1:-1].split(",")
|
|
init = {"onset": items[0], "pulses": int(params[0]), "length": int(params[1])}
|
|
text = items[0].text + items[1]
|
|
if len(params) > 2:
|
|
init["rotate"] = int(params[2])
|
|
if len(items) > 2:
|
|
init["offset"] = items[2]
|
|
text = text + items[2].text
|
|
init["text"] = text
|
|
return Euclid(**init)
|
|
|
|
def euclid_operator(self, token):
|
|
"""Return euclid operators"""
|
|
return token.value
|
|
|
|
def repeat(self, items):
|
|
"""Parse repeated sequence, ex: [: 1 2 3 :]"""
|
|
if items[-1] is not None:
|
|
return RepeatedSequence(
|
|
values=items[0], repeats=items[-1], wrap_end=":" + items[-1].text + "]"
|
|
)
|
|
else:
|
|
return RepeatedSequence(values=items[0], repeats=Integer(value=2, text="2"))
|
|
|
|
def repeat_item(self, items):
|
|
"""Parse repeat item syntax to sequence, ex: 1:4 (1 2 3):5"""
|
|
return RepeatedListSequence(
|
|
values=[items[0]],
|
|
repeats=items[1],
|
|
wrap_start="",
|
|
wrap_end=":" + items[1].text,
|
|
)
|
|
|
|
|
|
# pylint: disable=locally-disabled, unused-argument, too-many-public-methods, invalid-name, eval-used
|
|
class ScalaTransformer(Transformer):
|
|
def lines(self, items):
|
|
cents = [ratio_to_cents(item) if isinstance(item,int) else item for item in items]
|
|
return cents_to_semitones(cents)
|
|
|
|
def operation(self, items):
|
|
# Safe eval. Items are pre-parsed.
|
|
val = eval("".join(str(item) for item in items))
|
|
return val
|
|
|
|
def operator(self, items):
|
|
return items[0].value
|
|
|
|
def sub_operations(self, items):
|
|
return "(" + items[0] + ")"
|
|
|
|
def ratio(self, items):
|
|
ratio = items[0]/items[1]
|
|
return ratio_to_cents(ratio)
|
|
|
|
def edo_ratio(self, items):
|
|
ratio = pow(2,items[0]/items[1])
|
|
return ratio_to_cents(ratio)
|
|
|
|
def edji_ratio(self, items):
|
|
if len(items)>3:
|
|
power = items[2]/items[3]
|
|
else:
|
|
power = items[2]
|
|
ratio = pow(power,items[0]/items[1])
|
|
return ratio_to_cents(ratio)
|
|
|
|
def int(self, items):
|
|
return int(items[0].value)
|
|
|
|
def float(self, items):
|
|
return float(items[0].value)
|
|
|
|
def random_int(self, items):
|
|
|
|
def _rand_between(start, end):
|
|
return random.randint(min(start, end), max(start, end))
|
|
|
|
start = items[0]
|
|
end = items[1]
|
|
rand_val = _rand_between(start, end)
|
|
return rand_val
|
|
|
|
def random_decimal(self, items):
|
|
|
|
def _rand_between(start, end):
|
|
return random.uniform(min(start, end), max(start, end))
|
|
|
|
start = items[0]
|
|
end = items[1]
|
|
rand_val = _rand_between(start, end)
|
|
return rand_val
|