feat: get rid of gc and cyclic thunk

src/bytecode.rs

@@ -1,5 +1,4 @@
 use ecow::EcoString;
-use gc_arena::Collect;
 use hashbrown::HashMap;
 
 use crate::ty::common::Const;
@@ -9,8 +8,7 @@ type Slice<T> = Box<[T]>;
 
 pub type OpCodes = Slice<OpCode>;
 
-#[derive(Debug, Clone, Copy, Collect)]
-#[collect(no_drop)]
+#[derive(Debug, Clone, Copy)]
 pub enum OpCode {
     /// load a constant onto stack
     Const { idx: usize },
@@ -90,8 +88,7 @@ pub enum OpCode {
     Illegal,
 }
 
-#[derive(Debug, Clone, Copy, Collect)]
-#[collect(no_drop)]
+#[derive(Debug, Clone, Copy)]
 pub enum BinOp {
     Add,
     Sub,
@@ -105,15 +102,13 @@ pub enum BinOp {
     Upd,
 }
 
-#[derive(Debug, Clone, Copy, Collect)]
-#[collect(no_drop)]
+#[derive(Debug, Clone, Copy)]
 pub enum UnOp {
     Neg,
     Not,
 }
 
-#[derive(Debug, Collect)]
-#[collect(no_drop)]
+#[derive(Debug)]
 pub struct Func {
     pub param: Param,
     pub opcodes: OpCodes,