def set_view.go

lawful-bytes@0.1.1.0 · PROOF.bend:184

import Base
import lawful-bytes@0.1.1.0/defs.bend as D
import lawful-bytes@0.1.1.0/bytes.bend as B
import lawful-bytes@0.1.1.0/proof_core.bend as C
import lawful-bytes@0.1.1.0/proof_ops.bend as O

184def set_view.go(-b: D.Bytes, +d: Nat, +i: U32, +v: U32, h: {D.ok(b, d) == True{} : Bool}, hi: {Nat.is_lt(U32.to_nat(i), D.size(b)) == True{} : Bool}, hv: {U32.is_lt(v, 256) == True{} : Bool}, m_b: C.BMirror(b)) ->
185  {D.view(B.set(b, i, v)) == List.set(&2, U32, D.view(b), U32.to_nat(i), v) : List<&2, U32>}:
186  (+l_b, m2_b) = m_b
187  (+t_b, +e_b) = m2_b
188  %e_b : {D.view(B.set(_, i, v)) == List.set(&2, U32, D.view(_), U32.to_nat(i), v) : List<&2, U32>}
189  +h_t = C.tr(x => {D.ok(x, d) == True{} : Bool}, b, l_b, t_b, e_b, h)
190  +hi_t = C.tr(x => {Nat.is_lt(U32.to_nat(i), D.size(x)) == True{} : Bool}, b, l_b, t_b, e_b, hi)
191  O.set_view_t(l_b, t_b, d, i, v, h_t, hi_t, hv)