def seek_view

bendvy-ecs-core@0.1.0.3 · column.bend:422

import Base
import lifecycle.bend as L
import owner_handoff.bend as H

422# Read terminals project the actual row owner before constructing its carrier.
423# Writer seek and the public low-fuel API remain unchanged.
424def seek_view(~S:Data,~C:Type,~V:Data,~project:C -> C & V,fuel:Nat,values:Array<Maybe<&1,C>>,stamps:List<&2,L.Entry>,capacity:U32,+target:U32,remaining:H.PrototypeHandoffRows<S,C>,past:History<S,C>,phase:SeekPhase) -> Column<S,C> & Maybe<&2,V>:
425  match fuel remaining phase:
426    case _ H.HandoffNil{} _: (Prepared{Owned{State{values,stamps,capacity,target,None{},H.HandoffNil{},past}}},None{})
427    case 0n H.HandoffCon{id,owner,rest} _: (Prepared{Owned{State{values,stamps,capacity,0,None{},H.HandoffCon{id,owner,rest},past}}},None{})
428    case 1n+more H.HandoffCon{+id,owner,rest} Inspect{}: seek_view(~S,~C,~V,~project,more,values,stamps,capacity,target,H.HandoffCon{id,owner,rest},past,Choice{U32.is_eq(target,id),U32.is_lt(target,id)})
429    case 1n+more H.HandoffCon{id,owner,rest} Choice{True{},_}: prepared_view_projected(~S,~C,~V,values,stamps,capacity,target,rest,past,project(owner))
430    case 1n+more H.HandoffCon{id,owner,rest} Choice{False{},True{}}: (Prepared{Owned{State{values,stamps,capacity,target,None{},H.HandoffCon{id,owner,rest},past}}},None{})
431    case 1n+more H.HandoffCon{id,owner,rest} Choice{False{},False{}}: seek_view(~S,~C,~V,~project,more,values,stamps,capacity,target,rest,HistoryCon{id,Some{owner},past},Inspect{})