def style.number.present

gralha-svg-render@0.1.0.1 · svg.bend:1077

import Base
import gralha-text-scan@0.1.0.1/scan.bend as U

1077# A numeric inherited property: the parent's number stays a number when the
1078# attribute is absent instead of being printed and parsed again.
1079def style.number.present(found: Maybe<&2, String>, +parent: F32, +initial: F32, parse: String -> F32) -> F32:
1080  match found:
1081    case None{}: parent
1082    case Some{v}:
1083      +vv = v
1084      +k = style.keyword(vv)
1085      U.choose(F32, U32.is_eq(k, 1) || U32.is_eq(k, 3), parent,
1086        U.choose(F32, U32.is_eq(k, 2), initial, parse(vv)))