optimize(env): single arg

src/ty/internal/attrset.rs

@@ -1,3 +1,5 @@
+use std::rc::Rc;
+
 use hashbrown::{HashMap, HashSet};
 
 use derive_more::Constructor;
@@ -47,7 +49,7 @@ impl<'jit: 'vm, 'vm> AttrSet<'jit, 'vm> {
         self.data.get(&sym).is_some()
     }
 
-    pub fn capture(&mut self, env: &LetEnv<'jit, 'vm>) {
+    pub fn capture(&mut self, env: &Rc<LetEnv<'jit, 'vm>>) {
         self.data.iter().for_each(|(_, v)| match v.clone() {
             Value::Thunk(ref thunk) => {
                 thunk.capture(env.clone());