automatically heapify captured variables

interpreter/src/function.rs

@@ -3,16 +3,16 @@ use std::rc::Rc;
 
 use rlox2_frontend::parser::Stmt;
 
-use crate::value::HeapedValue;
+use crate::environment::{ClosureScope, HeapedValue};
 
-use super::environment::{Environment, Scope};
+use super::environment::Environment;
 use super::interpret::EvalResult;
 use super::{Runtime, Value};
 
 #[derive(Debug, Clone)]
 pub struct LoxFunction {
     name: Box<str>,
-    closure: Scope,
+    closure: ClosureScope,
     param_names: Vec<Box<str>>,
     body: Box<Stmt>,
 }
@@ -20,7 +20,7 @@ pub struct LoxFunction {
 impl LoxFunction {
     pub fn new(
         name: impl Into<Box<str>>,
-        closure: Scope,
+        closure: ClosureScope,
         param_names: Vec<Box<str>>,
         body: Stmt,
     ) -> Rc<Self> {
@@ -39,7 +39,7 @@ impl LoxFunction {
         &self.name
     }
 
-    pub fn closure(&self) -> &Scope {
+    pub fn closure(&self) -> &ClosureScope {
         &self.closure
     }