def scan

cswap-bend-cli@0.1.0.0 · json/scan.bend:33

import Base
import cswap-bend-cli@0.1.0.0/json/lex.bend as Lex

33# Tokens before the first comma or closer at depth 0.
34def scan(toks: List<&2, Lex.Tok>, +d: U32) -> Nat:
35  match toks:
36    case Nil{}:
37      0n
38    case Con{+h, t}:
39      scan.pick(stopper(tk.kind(h), d), 1n+scan(t, depth.next(tk.kind(h), d)))