diff options
Diffstat (limited to 'dhall/src/semantics/tck')
| -rw-r--r-- | dhall/src/semantics/tck/typecheck.rs | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/dhall/src/semantics/tck/typecheck.rs b/dhall/src/semantics/tck/typecheck.rs index 4ca5d4d..e2619b5 100644 --- a/dhall/src/semantics/tck/typecheck.rs +++ b/dhall/src/semantics/tck/typecheck.rs @@ -35,6 +35,14 @@ impl TyEnv { items: NzEnv::new(), } } + pub fn from_nzenv_alpha(items: &NzEnv) -> Self { + TyEnv { + names: NameEnv::from_binders( + std::iter::repeat("_".into()).take(items.size()), + ), + items: items.clone(), + } + } pub fn as_quoteenv(&self) -> QuoteEnv { self.names.as_quoteenv() } @@ -147,7 +155,7 @@ fn type_one_layer( ExprKind::EmptyListLit(t) => { let t = t.normalize_whnf(env.as_nzenv()); match &*t.as_whnf() { - ValueKind::AppliedBuiltin(Builtin::List, args, _) + ValueKind::AppliedBuiltin(Builtin::List, args, _, _) if args.len() == 1 => {} _ => return mkerr("InvalidListType"), }; @@ -404,7 +412,7 @@ fn type_one_layer( ExprKind::BinOp(BinOp::ListAppend, l, r) => { let l_ty = l.get_type()?; match &*l_ty.as_whnf() { - ValueKind::AppliedBuiltin(Builtin::List, _, _) => {} + ValueKind::AppliedBuiltin(Builtin::List, _, _, _) => {} _ => return mkerr("BinOpTypeMismatch"), } @@ -572,7 +580,7 @@ fn type_one_layer( /// Type-check an expression and return the expression alongside its type if type-checking /// succeeded, or an error if type-checking failed. -fn type_with( +pub(crate) fn type_with( env: &TyEnv, expr: &Expr<Normalized>, ) -> Result<TyExpr, TypeError> { |