Avoid unnecessary allocations of `Value`s

2 files changed, 4 insertions, 3 deletions

diff --git a/dhall/src/semantics/tck/env.rs b/dhall/src/semantics/tck/env.rs
index d4cc37d..812ca7a 100644
--- a/dhall/src/semantics/tck/env.rs
+++ b/dhall/src/semantics/tck/env.rs
@@ -118,7 +118,7 @@ impl TyEnv {
     }
     pub fn lookup(&self, var: &V) -> Option<(TyExprKind, Type)> {
         let var = self.names.unlabel_var(var)?;
-        let ty = self.items.lookup_val(&var).get_type().unwrap();
+        let ty = self.items.lookup_ty(&var);
         Some((TyExprKind::Var(var), ty))
     }
 }
diff --git a/dhall/src/semantics/tck/tyexpr.rs b/dhall/src/semantics/tck/tyexpr.rs
index 4b88048..1a048f9 100644
--- a/dhall/src/semantics/tck/tyexpr.rs
+++ b/dhall/src/semantics/tck/tyexpr.rs
@@ -1,5 +1,4 @@
 use crate::error::{TypeError, TypeMessage};
-use crate::semantics::normalize_tyexpr_whnf;
 use crate::semantics::{rc, NameEnv, NzEnv, TyEnv, Value};
 use crate::syntax::{ExprKind, Span, V};
 use crate::Normalized;
@@ -83,7 +82,9 @@ impl TyExpr {
     }
     /// Eval a closed TyExpr fully and recursively;
     pub fn rec_eval_closed_expr(&self) -> Value {
-        normalize_tyexpr_whnf(self, &NzEnv::new())
+        let mut val = self.eval_closed_expr();
+        val.normalize_mut();
+        val
     }
 }