ReadContract.attached: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/read_contract.bend as ReadContract
Lines 49-60 of bendtorch-core@0.1.0.0/src/tensor/read_contract.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/read_contract.bend&start_line=49&end_line=60

import Base
import bendtorch-core@0.1.0.0/src/shape/core.bend as Shape
import bendtorch-core@0.1.0.0/src/shape/nat_proofs.bend as Nats
import bendtorch-core@0.1.0.0/src/storage/main.bend as Storage
import bendtorch-core@0.1.0.0/src/tensor/core.bend as Core
import bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend as Lifecycle
import bendtorch-core@0.1.0.0/src/tensor/allocation_PROOF.bend as AllocationProof

def attached(+shape: Shape.Shape, -storage: Storage.Storage, +n: Nat, -exact: {Lifecycle.logical_length(storage) == n : Nat},
  decision: Shape.BoolCase<Nat.is_eq(n, Shape.elements(shape))>, counted: {n == Shape.elements(shape) : Nat},
  -P: Result<&2, &1, Core.Error, Core.Tensor<shape>> -> Type,
  h: @-valid: {Lifecycle.logical_length(storage) == Shape.logical_numel(Shape.dimensions(shape)) : Nat} -> P(Done{Core.TTensor{storage, valid}})) ->
  P(Core.attach_decided(shape, storage, n, exact, decision)):
  match decision:
    case Shape.BFalse{no}:
      Empty.absurd(P(Core.attach_decided(shape, storage, n, exact, Shape.BFalse{no})),
        Nats.contradiction(Nat.is_eq(n, Shape.elements(shape)), AllocationProof.natural_equal_true(n, Shape.elements(shape), counted), no))
    case Shape.BTrue{yes}:
      h(Equal.trans(Nat, Lifecycle.logical_length(storage), n, Shape.logical_numel(Shape.dimensions(shape)), exact,
        Equal.trans(Nat, n, Shape.elements(shape), Shape.logical_numel(Shape.dimensions(shape)), Lifecycle.natural_equal(n, Shape.elements(shape), yes), Shape.elements_exact(shape))))

Uses (19):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Empty.absurd
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.trans
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Nat.is_eq
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Result
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=BoolCase
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=Shape
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=dimensions
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=elements
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=elements_exact
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/core.bend&name=logical_numel
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/shape/nat_proofs.bend&name=contradiction
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/main.bend&name=Storage
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/allocation_PROOF.bend&name=natural_equal_true
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Error
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=Tensor
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/core.bend&name=attach_decided
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&name=logical_length
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&name=natural_equal