ExecutionReservationMaterialization.leaf_checked: def of bendvy-ecs-core@0.1.0.3
Import: import bendvy-ecs-core@0.1.0.3/execution_reservation_materialization.bend as ExecutionReservationMaterialization
Lines 32-35 of bendvy-ecs-core@0.1.0.3/execution_reservation_materialization.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.3/execution_reservation_materialization.bend&start_line=32&end_line=35

import Base
import bendvy-ecs-core@0.1.0.3/execution_reservation_bundle.bend as Bundle
import bendvy-ecs-core@0.1.0.3/execution_composer_layout.bend as Layout
import bendvy-ecs-core@0.1.0.3/chunk_column.bend as Column

def leaf_checked(~S:Data,-P:Type,-V:Data,+key:String,-origin:Layout.Layout,bundle:Maybe<&1,P>,result:Column.Column<S,Layout.Viewed<P,V>> & Maybe<&2,Bool>) -> Layout.ColumnSlot<S,Layout.Viewed<P,V>,key,origin> & (Maybe<&1,P> & Maybe<&2,Bundle.Refusal>):
  match result:
    case (column,None{}):(Layout.ColumnSlot{column},(bundle,Some{Bundle.MalformedColumn{key}}))
    case (column,Some{vacant}):(Layout.ColumnSlot{column},(bundle,reason(vacant,key)))

Uses (11):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/chunk_column.bend&name=Column
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/execution_composer_layout.bend&name=ColumnSlot
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/execution_composer_layout.bend&name=Layout
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/execution_composer_layout.bend&name=Viewed
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/execution_reservation_bundle.bend&name=Refusal
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.3/execution_reservation_materialization.bend&name=reason