116 lines
3.2 KiB
Python
116 lines
3.2 KiB
Python
from lark import Transformer
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from .classes import *
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from .common import flatten
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from .defaults import default_durs
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class ZiffersTransformer(Transformer):
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def root(self, items):
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return Ziffers(flatten(items))
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def list(self,items):
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values = flatten(items[0].values)
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return Sequence(values=values,text="("+"".join([val.text for val in values])+")")
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def random_integer(self,s):
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val = s[0][1:-1].split(",")
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return RandomInteger(min=val[0],max=val[1],text=s[0])
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def range(self,s):
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val = s[0].split("..")
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return Range(start=val[0],end=val[1],text=s[0])
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def cycle(self, items):
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values = items[0].values
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no_spaces = [val for val in values if type(val)!=Meta]
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return Cyclic(values=no_spaces,text="<"+"".join([val.text for val in values])+">")
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def pc(self, s):
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if(len(s)>1):
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# Collect&sum prefixes from any order: _qee^s4 etc.
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result = s[0]
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for hash in s[1:]:
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for key in hash.keys():
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if key in result:
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result[key] = result[key] + hash[key]
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else:
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result[key] = hash[key]
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return Pitch(**result)
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else:
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val = s[0]
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return Pitch(**val)
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def pitch(self,s):
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return {"pc":int(s[0].value),"text":s[0].value}
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def prefix(self,s):
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return s[0]
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def oct_change(self,s):
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octave = s[0]
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return [OctaveChange(oct=octave["oct"],text=octave["text"]),s[1]]
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def oct_mod(self,s):
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octave = s[0]
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return [OctaveMod(oct=octave["oct"],text=octave["text"]),s[1]]
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def escaped_octave(self,s):
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value = s[0][1:-1]
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return {"oct": int(value), "text":s[0].value}
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def octave(self,s):
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value = sum([1 if char=='^' else -1 for char in s[0].value])
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return {"oct": value, "text":s[0].value}
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def chord(self,s):
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return Chord(pcs=s,text="".join([val.text for val in s]))
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def dur_change(self,s):
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duration = s[0]
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return [DurationChange(dur=duration["dur"], text=duration["text"]),s[1]]
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def escaped_decimal(self,s):
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val = s[0]
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val["text"] = "<"+val["text"]+">"
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return val
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def random_pitch(self,s):
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return RandomPitch(text="?")
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def random_percent(self,s):
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return RandomPercent(text="%")
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def duration_chars(self,s):
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durations = [val[1] for val in s]
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characters = "".join([val[0] for val in s])
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return {"dur": sum(durations), "text":characters}
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def dotted_dur(self,s):
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key = s[0]
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val = default_durs[key]
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dots = len(s)-1
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if(dots>1):
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val = val * (2.0-(1.0/(2*dots)))
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return [key+"."*dots,val]
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def decimal(self,s):
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val = s[0]
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return {"dur": float(val),"text": val.value}
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def dot(self,s):
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return "."
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def dchar(self,s):
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chardur = s[0].value
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return chardur
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def WS(self,s):
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return Meta(text=s[0])
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def subdivision(self,items):
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values = flatten(items[0])
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return Subdivision(values=values,text="["+"".join([val.text for val in values])+"]")
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def subitems(self,s):
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return s
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