def construct

bend-collections-laws-crypto@1.0.0.0 · proofs/lib/lemmas/src/cache.bend:22

import Base

22def construct(-K: Data, -V: Data, capacity: U32, size: U32, zero: Bool, reserved: Bool, small: Bool) -> Result<&2, &2, String, Cache<K, V>>:
23  match zero reserved small:
24    case True{} a b:
25      Fail{"capacity must be positive"}
26    case False{} True{} b:
27      Fail{"size must not be 0XFFFFFFFF"}
28    case False{} False{} True{}:
29      Fail{"size (" ++ U32.show(size) ++ ") is smaller than capacity (" ++ U32.show(capacity) ++ ")"}
30    case False{} False{} False{}:
31      Done{init(K, V, U32.to_nat(capacity))}