ConstructionContractPROOF.attached_value: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/construction_contract_PROOF.bend as ConstructionContractPROOF
Lines 184-201 of bendtorch-core@0.1.0.0/src/tensor/construction_contract_PROOF.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/construction_contract_PROOF.bend&start_line=184&end_line=201

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/storage/LAWS.bend as StorageLaws
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
import bendtorch-core@0.1.0.0/src/tensor/observation.bend as Observation

def attached_value(+shape: Shape.Shape, +fill: F32, +index: U32, +other: U32, +length: Nat,
  decision: Shape.BoolCase<Nat.is_eq(length, Shape.elements(shape))>, storage: Storage.Storage,
  -exact: {Lifecycle.logical_length(storage) == length : Nat}, counted: {length == Shape.elements(shape) : Nat},
  kept: {Lifecycle.read_value(Storage.get(StorageLaws.kept(storage, index), other)) == Some{fill} : Maybe<&2, F32>}) ->
  {Observation.after_value(shape, index, other, Core.attach_decided(shape, storage, length, exact, decision)) == Some{fill} : Maybe<&2, F32>}:
  match decision:
    case Shape.BFalse{no}:
      Empty.absurd({None{} == Some{fill} : Maybe<&2, F32>}, Nats.contradiction(Nat.is_eq(length, Shape.elements(shape)),
        AllocationProof.natural_equal_true(length, Shape.elements(shape), counted), no))
    case Shape.BTrue{yes}:
      Equal.trans(Maybe<&2, F32>,
        Observation.after_value(shape, index, other, Core.attach_decided(shape, storage, length, exact, Shape.BTrue{yes})),
        Lifecycle.read_value(Storage.get(StorageLaws.kept(storage, index), other)), Some{fill},
        next_projection(shape, storage,
          Equal.trans(Nat, Lifecycle.logical_length(storage), length, Shape.logical_numel(Shape.dimensions(shape)), exact,
            Equal.trans(Nat, length, Shape.elements(shape), Shape.logical_numel(Shape.dimensions(shape)),
              Lifecycle.natural_equal(length, Shape.elements(shape), yes), Shape.elements_exact(shape))),
          index, other, Storage.get(storage, index), {==}), kept)

Uses (24):
  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=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Maybe
  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=U32
  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/LAWS.bend&name=kept
  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/storage/main.bend&name=get
  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/construction_contract_PROOF.bend&name=next_projection
  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
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&name=read_value
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/observation.bend&name=after_value