lean4-htt/tests/lean/ppExpr.lean
2022-04-07 18:19:15 -07:00

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Text

import Lean
/-! Pretty printing tests for `Expr`s that cannot be generated by parsing+elaborating. -/
open Lean
def test (e : Expr) : MetaM Unit := do
IO.println (← PrettyPrinter.ppExpr e)
-- loose bound variable
#eval test (mkBVar 0)
-- anonymous binder
#eval test (mkLambda Name.anonymous BinderInfo.default (mkSort levelZero) (mkBVar 0))
-- pp annotations
#eval test $
mkAppN (mkConst `id [levelOne]) #[
mkConst `Nat,
mkMData (KVMap.empty.set `pp.explicit true) $ mkAppN (mkConst `id [levelOne]) #[
mkConst `Nat,
mkAppN (mkConst `id [levelOne]) #[
mkConst `Nat,
mkConst `Nat.zero
]]]