Pick.search.first: def of bolt@1.27.0.0
Import: import bolt@1.27.0.0/src/rules/correctness/pick.bend as Pick
Lines 247-262 of bolt@1.27.0.0/src/rules/correctness/pick.bend: https://jend.leeeet.dev/read.txt?path=bolt@1.27.0.0/src/rules/correctness/pick.bend&start_line=247&end_line=262

import Base
import bolt@1.27.0.0/src/syntax/tree.bend as Tree

# the first statement of the chain that reads xx, the chain's end (NNil)
# when none does; hit: prev, the one before the chain, did
def search.first(nn: Tree.Node, +xx: String, prev: Tree.Node, hit: Bool) -> Tree.Node:
  match nn:
    case Tree.NCons{+h, t}:
      match hit:
        case True{}:
          prev
        case False{}:
          search.first(t, xx, h, search.reads(h, xx))
    case _other:
      match hit:
        case True{}:
          prev
        case False{}:
          Tree.NNil{}

Uses (4):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=String
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/rules/correctness/pick.bend&name=search.reads
  https://jend.leeeet.dev/definition.txt?path=bolt@1.27.0.0/src/syntax/tree.bend&name=Node