feat: gc-arena (WIP, does not compile)

src/bytecode.rs

@@ -1,6 +1,6 @@
 use hashbrown::HashMap;
-
 use ecow::EcoString;
+use gc_arena::Collect;
 
 use crate::ty::common::Const;
 use crate::ty::internal::Param;
@@ -9,7 +9,8 @@ type Slice<T> = Box<[T]>;
 
 pub type OpCodes = Slice<OpCode>;
 
-#[derive(Debug, Clone, Copy)]
+#[derive(Debug, Clone, Copy, Collect)]
+#[collect(no_drop)]
 pub enum OpCode {
     /// load a constant onto stack
     Const { idx: usize },
@@ -103,7 +104,8 @@ pub enum UnOp {
     Not,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Collect)]
+#[collect(no_drop)]
 pub struct Func {
     pub param: Param,
     pub opcodes: OpCodes,