def add.if

bend-toon-codec@0.1.0.0 · src/frame.bend:94

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

94def add.if(+dup: Bool, +strict: Bool, +k: String, +v: J.Json, +fs: J.Json) -> Result<&2, &2, String, J.Json>:
95  match dup strict:
96    case False{} _:
97      Done{J.JField{k, v, fs}}
98    case True{} True{}:
99      Fail{"duplicate key"}
100    case True{} False{}:
101      Done{set(k, v, fs)}