lean4-htt/tests/elab/fieldTypeBug.lean
Garmelon 08eb78a5b2
chore: switch to new test/bench suite (#12590)
This PR sets up the new integrated test/bench suite. It then migrates
all benchmarks and some related tests to the new suite. There's also
some documentation and some linting.

For now, a lot of the old tests are left alone so this PR doesn't become
even larger than it already is. Eventually, all tests should be migrated
to the new suite though so there isn't a confusing mix of two systems.
2026-02-25 13:51:53 +00:00

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import Lean
def HList (αs : List (Type u)) : Type u := αs.foldr Prod.{u, u} PUnit
@[match_pattern] def HList.nil : HList [] := ⟨⟩
@[match_pattern] def HList.cons (a : α) (as : HList αs): HList (α :: αs) := (a, as)
def HList.set {αs : List (Type u)} (as : HList αs) (i : Fin αs.length) (v : αs.get i) : HList αs :=
match αs, as, i, v with
| _ :: _, cons _ as, ⟨0, _⟩, b => cons b as
| _ :: _, cons a as, ⟨Nat.succ n, h⟩, b => cons a (set as ⟨n, Nat.le_of_succ_le_succ h⟩ b)
| [], nil, _, _ => nil
open Lean.Compiler
set_option pp.funBinderTypes true
set_option pp.letVarTypes true
set_option trace.Compiler.result true
run_meta compile #[``HList.set]