def same1_view.go

lawful-bytes@0.1.1.0 · PROOF.bend:386

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_same.bend as S

386def same1_view.go(-b: D.Bytes, +d: Nat, +i: U32, +j: U32, +n: U32, h: {D.ok(b, d) == True{} : Bool}, hi: {Nat.is_le(Nat.add(U32.to_nat(i), U32.to_nat(n)), D.size(b)) == True{} : Bool}, hj: {Nat.is_le(Nat.add(U32.to_nat(j), U32.to_nat(n)), D.size(b)) == True{} : Bool}, m_b: C.BMirror(b)) ->
387  {Pair.snd(D.Bytes, Bool, B.same1(b, i, j, n)) == D.list_eq(D.slice(D.view(b), U32.to_nat(i), U32.to_nat(n)), D.slice(D.view(b), U32.to_nat(j), U32.to_nat(n))) : Bool}:
388  (+l_b, m2_b) = m_b
389  (+t_b, +e_b) = m2_b
390  %e_b : {Pair.snd(D.Bytes, Bool, B.same1(_, i, j, n)) == D.list_eq(D.slice(D.view(_), U32.to_nat(i), U32.to_nat(n)), D.slice(D.view(_), U32.to_nat(j), U32.to_nat(n))) : Bool}
391  +h_t = C.tr(x => {D.ok(x, d) == True{} : Bool}, b, l_b, t_b, e_b, h)
392  +hi_t = C.tr(x => {Nat.is_le(Nat.add(U32.to_nat(i), U32.to_nat(n)), D.size(x)) == True{} : Bool}, b, l_b, t_b, e_b, hi)
393  +hj_t = C.tr(x => {Nat.is_le(Nat.add(U32.to_nat(j), U32.to_nat(n)), D.size(x)) == True{} : Bool}, b, l_b, t_b, e_b, hj)
394  S.same1_view_t(l_b, t_b, d, i, j, n, h_t, hi_t, hj_t)