feat: no clone in JIT

IMPORTANT: should not drop or create values in JIT anymore

src/ty/internal/attrset.rs

@@ -6,7 +6,7 @@ use derive_more::Constructor;
 use itertools::Itertools;
 
 use crate::error::Result;
-use crate::vm::{VmEnv, VM};
+use crate::vm::{VM, VmEnv};
 
 use super::super::public as p;
 use super::Value;
@@ -42,9 +42,9 @@ impl<'jit: 'vm, 'vm> AttrSet<'jit, 'vm> {
     }
 
     pub fn select(&self, sym: usize) -> Option<Value<'jit, 'vm>> {
-        self.data.get(&sym).cloned().map(|val| match val {
+        self.data.get(&sym).map(|val| match val {
             Value::Builtins(x) => Value::AttrSet(x.upgrade().unwrap()),
-            val => val,
+            val => val.clone(),
         })
     }
 
@@ -53,8 +53,10 @@ impl<'jit: 'vm, 'vm> AttrSet<'jit, 'vm> {
     }
 
     pub fn capture(&mut self, env: &Rc<VmEnv<'jit, 'vm>>) {
-        self.data.iter().for_each(|(_, v)| if let Value::Thunk(ref thunk) = v.clone() {
-            thunk.capture(env.clone());
+        self.data.iter().for_each(|(_, v)| {
+            if let Value::Thunk(ref thunk) = v.clone() {
+                thunk.capture(Rc::clone(env));
+            }
         })
     }
 
@@ -77,11 +79,7 @@ impl<'jit: 'vm, 'vm> AttrSet<'jit, 'vm> {
     }
 
     pub fn force_deep(&mut self, vm: &'vm VM<'jit>) -> Result<()> {
-        let mut map: Vec<_> = self
-            .data
-            .iter()
-            .map(|(k, v)| (*k, v.clone()))
-            .collect();
+        let mut map: Vec<_> = self.data.iter().map(|(k, v)| (*k, v.clone())).collect();
         for (_, v) in map.iter_mut() {
             v.force_deep(vm)?;
         }