Added range evaluation and more operators

ziffers/classes.py

@@ -328,6 +328,8 @@ class Sequence(Meta):
                     yield item
                 else:
                     yield from item.evaluate_tree(options)
+            elif isinstance(item, Range):
+                    yield from item.evaluate(options)
             elif isinstance(item, Cyclic):
                 yield from _resolve_item(item.get_value(), options)
             elif isinstance(item, Euclid):
@@ -689,6 +691,10 @@ class Range(Item):
     start: int = field(default=None)
     end: int = field(default=None)
 
+    def evaluate(self, options):
+        for i in range(self.start,self.end+1):
+            yield Pitch(pitch_class=i, kwargs=options)
+
 
 @dataclass(kw_only=True)
 class Operator(Item):
@@ -714,6 +720,7 @@ class ListOperation(Sequence):
         def filter_operation(input_list):
             flattened_list = []
 
+            # TODO: ADD Options here and evaluate events?
             for item in input_list:
                 if isinstance(item, (list, Sequence)):
                     if isinstance(item, ListOperation):
@@ -740,6 +747,7 @@ class ListOperation(Sequence):
                 (right.values if isinstance(right, Sequence) else [right]), left
             )
             left = [
+                #TODO: Get options from x value?
                 Pitch(
                     pitch_class=operation(x.get_value(options), y.get_value(options)),
                     kwargs=options,
@@ -849,5 +857,7 @@ class RepeatedSequence(Sequence):
                 self.local_options = self.local_options | item.as_options()
             elif isinstance(item, Rest):
                 yield item.get_updated_item(self.local_options)
+            elif isinstance(item, Range):
+                    yield from item.evaluate(options)
             elif isinstance(item, (Event, RandomInteger)):
                 yield Pitch(pitch_class=item.get_value(self.local_options), kwargs=self.local_options)

ziffers/defaults.py

@@ -49,6 +49,10 @@ OPERATORS = {
     "*": operator.mul,
     "/": operator.truediv,
     "%": operator.mod,
+    "|": operator.or_,
+    "&": operator.and_,
+    "<<": operator.ilshift,
+    ">>": operator.irshift
 }
 
 

ziffers/mapper.py

@@ -71,7 +71,7 @@ class ZiffersTransformer(Transformer):
     def range(self, item) -> Range:
         """Parses range syntax"""
         val = item[0].split("..")
-        return Range(start=val[0], end=val[1], text=item[0])
+        return Range(start=int(val[0]), end=int(val[1]), text=item[0].value)
 
     def cycle(self, items) -> Cyclic:
         """Parses cycle"""

ziffers/spec/ziffers.lark

@@ -43,7 +43,7 @@
     // Right recursive list operation
     list_op: list (operator right_op)+
     right_op: list | number
-    operator: /([\+\-\*\/%]|<<|>>)/
+    operator: /([\+\-\*\/%\|\&]|<<|>>)/
 
     // Euclidean cycles
     // TODO: Support randomization etc.
@@ -56,7 +56,7 @@
 
     // Subdivision
     subdivision: "[" subitems "]"
-    subitems: (pitch_class | random_integer | random_pitch | rest | oct_mod | oct_change | WS | chord | named_roman | cycle | subdivision | list | list_op)*
+    subitems: (pitch_class | random_integer | random_pitch | rest | oct_mod | oct_change | WS | chord | named_roman | cycle | subdivision | list | list_op | range)*
 
     // Control characters modifying future events
     oct_mod: octave WS
@@ -67,7 +67,7 @@
 
     // Generative rules
     random_integer: /\(-?[0-9]+,-?[0-9]+\)/
-    range: /-?[0-9]\.\.-?[0-9]/
+    range: /-?[0-9]+\.\.-?[0-9]+/
     cycle: "<" sequence ">"
     random_pitch: /(\?)(?!\d)/
     random_percent: /(%)(?!\d)/