def foreign.opens

bolt@1.27.0.0 · src/rules/suspicious/unused.bend:60

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

60# does the body open with an import once the def's header is over? While the
61# header is open (its tokens so far do not end in `:`), each statement is more
62# of it: `-> IO(T):` on the line after `def f(..) ->`
63def foreign.opens(body: Tree.Node, open: Bool) -> Bool:
64  match body:
65    case Tree.NCons{Tree.Stmt{sk, kids, _b}, rest}:
66      match open:
67        case True{}:
68          foreign.opens(rest, Bool.not(foreign.ends(kids, False{})))
69        case False{}:
70          foreign.first(sk)
71    case other:
72      False{}