LAWS.decode.step: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/shape/LAWS.bend as LAWS
Lines 56-65 of bendtorch-core@0.1.0.0/src/shape/LAWS.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/shape/LAWS.bend&start_line=56&end_line=65

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape

def decode.step(-dh: Nat, -dt: List<&2, Nat>, tail: Maybe<&2, Shape.Coordinate(dt)>, head: Maybe<&2, Shape.Fin(dh)>) -> Maybe<&2, Shape.Coordinate(dh <> dt)>:
  match tail:
    case None{}:
      None{}
    case Some{rest}:
      match head:
        case None{}:
          None{}
        case Some{index}:
          Some{Shape.CStep{index, rest}}

Uses (6):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Coordinate
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Coordinate.Step
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Fin