def lists_2103

bendtorch-core@0.1.0.0 · src/tensor/axis_algebra.bend:1544

import Base

1544def lists_2103(-A: Data, +items: List<&2, A>, length: {List.length(&2, A, items) == 4n : Nat}) -> ListFacts<A, 4n, [2n, 1n, 0n, 3n], items>:
1545  match items:
1546    case Nil{}:
1547      Empty.absurd(ListFacts<A, 4n, [2n, 1n, 0n, 3n], Nil{}>, nat_clash(0n, 4n, length, {==}))
1548    case +x0 <> Nil{}:
1549      Empty.absurd(ListFacts<A, 4n, [2n, 1n, 0n, 3n], x0 <> Nil{}>, nat_clash(1n, 4n, length, {==}))
1550    case +x0 <> +x1 <> Nil{}:
1551      Empty.absurd(ListFacts<A, 4n, [2n, 1n, 0n, 3n], x0 <> x1 <> Nil{}>, nat_clash(2n, 4n, length, {==}))
1552    case +x0 <> +x1 <> +x2 <> Nil{}:
1553      Empty.absurd(ListFacts<A, 4n, [2n, 1n, 0n, 3n], x0 <> x1 <> x2 <> Nil{}>, nat_clash(3n, 4n, length, {==}))
1554    case +x0 <> +x1 <> +x2 <> +x3 <> Nil{}:
1555      Lists{{==}, {==}, {==}, {==}, {==}, {==}}
1556    case +x0 <> +x1 <> +x2 <> +x3 <> +x4 <> +tail:
1557      Empty.absurd(ListFacts<A, 4n, [2n, 1n, 0n, 3n], x0 <> x1 <> x2 <> x3 <> x4 <> tail>, nat_clash(5n+List.length(&2, A, tail), 4n, length, {==}))