Changes all around - objects and GC

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

src/vm/frame.rs

@@ -1,17 +1,26 @@
-use crate::obj::prelude::*;
-use std::collections::BTreeMap;
+use crate::{
+    obj::prelude::*,
+    vm::op::Op,
+};
+use std::rc::Rc;
 
-#[derive(Default)]
 pub struct Frame {
     stack: Vec<DynRef>,
     ip: usize,
     return_value: Option<DynRef>,
-    locals: BTreeMap<Sym, DynRef>,
+    locals: Ns,
+    ops: Rc<Vec<Op>>,
 }
 
 impl Frame {
-    pub fn new() -> Self {
-        Default::default()
+    pub fn new(ops: Rc<Vec<Op>>) -> Self {
+        Frame {
+            stack: Default::default(),
+            ip: 0,
+            return_value: None,
+            locals: Default::default(),
+            ops,
+        }
     }
 
     pub fn push(&mut self, obj_ref: DynRef) {
@@ -45,5 +54,9 @@ impl Frame {
     pub fn set_local(&mut self, sym: Sym, obj_ref: DynRef) -> Option<DynRef> {
         self.locals.insert(sym, obj_ref)
     }
+
+    pub fn ops(&self) -> &Rc<Vec<Op>> {
+        &self.ops
+    }
 }