Lifecycle.checked_index_allowed: def of bendtorch-core@0.1.0.0
Import: import bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend as Lifecycle
Lines 307-315 of bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend: https://jend.leeeet.dev/read.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&start_line=307&end_line=315

import Base
import bendtorch-core@0.1.0.0/src/storage/main.bend as Storage
import bendtorch-core@0.1.0.0/src/storage/model.bend as Model
import bendtorch-core@0.1.0.0/src/storage/refinement.bend as Refinement

def checked_index_allowed(+depth: Nat, +length: Nat, +index: U32,
  +checked: {Storage.index_matches(depth, length, index) == True{} : Bool}) -> {Nat.is_lt(U32.to_nat(index), length) == True{} : Bool}:
  %natural_equal(Model.offset(depth, Refinement.route(depth, index)), U32.to_nat(index),
    Equal.sym(Bool, Nat.is_eq(Model.offset(depth, Refinement.route(depth, index)), U32.to_nat(index)), True{},
      and_left_true(Nat.is_eq(Model.offset(depth, Refinement.route(depth, index)), U32.to_nat(index)),
        Nat.is_lt(Model.offset(depth, Refinement.route(depth, index)), length), checked))) :
    {Nat.is_lt(_, length) == True{} : Bool}
  and_right_true(Nat.is_eq(Model.offset(depth, Refinement.route(depth, index)), U32.to_nat(index)),
    Nat.is_lt(Model.offset(depth, Refinement.route(depth, index)), length), checked)

Uses (13):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Bool
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Equal.sym
  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=Nat.is_lt
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=U32.to_nat
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/main.bend&name=index_matches
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/model.bend&name=offset
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/storage/refinement.bend&name=route
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&name=and_left_true
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&name=and_right_true
  https://jend.leeeet.dev/definition.txt?path=bendtorch-core@0.1.0.0/src/tensor/lifecycle.bend&name=natural_equal