feat: gc-arena

finally...

src/ty/internal/attrset.rs

@@ -7,7 +7,6 @@ use hashbrown::{HashMap, HashSet};
 use itertools::Itertools;
 
 use crate::env::VmEnv;
-use crate::error::Result;
 use crate::vm::VM;
 
 use super::super::public as p;
@@ -85,16 +84,6 @@ impl<'jit: 'vm, 'vm, 'gc> AttrSet<'gc> {
         Self { data }
     }
 
-    pub fn force_deep(&mut self, vm: &VM, mc: &Mutation<'gc>) -> Result<()> {
-        todo!()
-        /* let mut map: Vec<_> = self.data.iter().map(|(k, v)| (*k, v.clone())).collect();
-        for (_, v) in map.iter_mut() {
-            v.force_deep(vm, mc)?;
-        }
-        self.data = map.into_iter().collect();
-        Ok(()) */
-    }
-
     pub fn eq_impl(&self, other: &AttrSet<'gc>) -> bool {
         self.data.iter().len() == other.data.iter().len()
             && std::iter::zip(