Universally quantified type variables

Implement universally quantified type variables, both explicitly given
by the user and inferred by the type inference algorithm.

1 files changed, 6 insertions, 0 deletions

diff --git a/src/ast/hir.rs b/src/ast/hir.rs
index 9db6919f6f53..6859174a2dd0 100644
--- a/src/ast/hir.rs
+++ b/src/ast/hir.rs
@@ -222,6 +222,12 @@ pub enum Decl<'a, T> {
 }
 
 impl<'a, T> Decl<'a, T> {
+    pub fn type_(&self) -> &T {
+        match self {
+            Decl::Fun { type_, .. } => type_,
+        }
+    }
+
     pub fn traverse_type<F, U, E>(self, f: F) -> Result<Decl<'a, U>, E>
     where
         F: Fn(T) -> Result<U, E> + Clone,