Expand.ins: def of bend-toon-codec@0.1.0.0
Import: import bend-toon-codec@0.1.0.0/src/expand.bend as Expand
Lines 108-125 of bend-toon-codec@0.1.0.0/src/expand.bend: https://jend.leeeet.dev/read.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&start_line=108&end_line=125

import Base
import bend-toon-codec@0.1.0.0/src/json.bend as J
import bend-toon-codec@0.1.0.0/src/head.bend as Hd

# Insert `leaf` at `segs` inside `e`: an object value, a field chain, or
# whatever sits at the path (then it conflicts unless the path has ended).
def ins(+e: J.Json, +segs: List<&2, String>, +leaf: J.Json, +strict: Bool) -> Result<&2, &2, String, J.Json>:
  match e segs:
    case J.JObj{efs} Nil{}:
      same.pick(empty_obj(leaf), strict, e, leaf)
    case J.JObj{efs} Con{s, rest}:
      wrap.obj(ins(efs, segs, leaf, strict))
    case J.JField{k, ev, t} Con{s, rest}:
      cell(Hd.keq(k, s), k, ev, t, ins(ev, rest, leaf, strict), ins(t, segs, leaf, strict))
    case J.JNil{} Con{s, rest}:
      Done{J.JField{s, build(rest, leaf), J.JNil{}}}
    case J.JField{k, ev, t} Nil{}:
      Done{e}
    case J.JNil{} Nil{}:
      Done{e}
    case _ _:
      conflict(strict, segs, leaf)

Uses (12):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&name=build
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&name=cell
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&name=conflict
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&name=empty_obj
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&name=same.pick
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/expand.bend&name=wrap.obj
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/head.bend&name=keq
  https://jend.leeeet.dev/definition.txt?path=bend-toon-codec@0.1.0.0/src/json.bend&name=Json