def attach

bendvy-ecs-core@0.1.0.4 · ordinary_app_machine.bend:39

import Base
import bendvy-ecs-core@0.1.0.4/ordinary_app_composer.bend as Build
import bendvy-ecs-core@0.1.0.4/ordinary_app_recipe.bend as Tree
import bendvy-ecs-core@0.1.0.4/ordinary_app_observation_data.bend as DTO
import bendvy-ecs-core@0.1.0.4/ordinary_app_registration_fields.bend as Fields
import bendvy-ecs-core@0.1.0.4/world.bend as W
import bendvy-ecs-core@0.1.0.4/ordinary_machine_declaration.bend as OD
import bendvy-ecs-core@0.1.0.4/machine.bend as M

39# Advanced observer attachment pairing prior rows with declared machine current
40# view. Retains World, registration owners and debug; does not create machine state.
41def attach(~S:Data,~K:Data,~V:Data,~C:Type,~R:Type,~E:Data,~take:R -> R & M.Slot<S,K,V>,~declaration:OD.Declaration<S,K,V,R,take>,~render:V -> String,~Owners:Type,~Rows:Data,~prior:W.World<S,C,R,E> -> W.World<S,C,R,E> & DTO.Observation<Rows>,~fold:Owners -> Owners & List<&2,Fields.Fields<S>>,app:Build.Registered<S,W.World<S,C,R,E>,Owners,Rows,prior,fold>) -> Build.Registered<S,W.World<S,C,R,E>,Owners,DTO.Product<Rows,M.CurrentView<S,K,V>>,Tree.observe_pair(~W.World<S,C,R,E>,~Rows,~M.CurrentView<S,K,V>,~prior,~observe(~S,~K,~V,~C,~R,~E,~take,~declaration,~render)),fold>:
42  match app:
43    case Build.Registered{world,owners,_,debug}:Build.Registered{world,owners,Tree.Recipe{},debug}