BuboBubo/ziffers-python
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Added repeats

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This commit is contained in:
Miika Alonen
2023-02-04 21:12:13 +02:00
parent 6597ca3f17
commit 26d3825ffb
3 changed files with 84 additions and 39 deletions
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ziffers/ziffers.lark
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@ -1,6 +1,6 @@
// Root for the rules
?root: sequence
sequence: (pc | dur_change | oct_mod | oct_change | WS | chord | cycle | random_integer | random_pitch | random_percent | range | list | lisp_operation | list_op | subdivision | eval | euclid)*
?root: sequence -> start
sequence: (pc | dur_change | oct_mod | oct_change | WS | chord | cycle | random_integer | random_pitch | random_percent | range | list | repeated_list | lisp_operation | list_op | subdivision | eval | euclid | repeat)*
// Pitch classes
pc: prefix* pitch
@ -14,15 +14,21 @@
chord: pc pc+
// Valid as integer
?number: SIGNED_NUMBER | random_integer
?number: SIGNED_NUMBER | random_integer | cyclic_number
cyclic_number: "<" number (WS number)* ">"
// Repeats
repeat: "[:" sequence ":" [number] "]"
// List
list: prefix* "(" sequence ")"
repeated_list: prefix* "(:" sequence ":" [number] ")"
// Right recursive list operation
list_op: list (operator (list | number))+
operator: /([\+\-\*\/%]|<<|>>)/
// Euclidean cycles
euclid: list euclid_operator list?
?euclid_operator: /<[0-9]+,[0-9]+(,[0-9])?>/