feat: 对小整数做额外枚举以优化性能

crates/oxide_vm/src/vm.rs

@@ -113,6 +113,7 @@ impl Vm {
             .iter()
             .map(|c| match c {
                 Constant::Number(v) => JsValue::float(*v),
+                Constant::Int(v) => JsValue::int(*v),
                 Constant::String(s) => self.intern(s),
                 Constant::Boolean(b) => JsValue::bool(*b),
                 Constant::Null => JsValue::null(),

crates/oxide_vm/tests/vm_tests.rs

@@ -34,7 +34,7 @@ fn object_create_and_read() {
     assert!(obj.is_object());
     let obj_ref = unsafe { &*obj.as_js_object_ptr() };
     assert_eq!(obj_ref.prop_count(), 1, "object should have 1 property");
-    assert!(obj_ref.get_inline_prop(0).is_double());
+    assert!(obj_ref.get_inline_prop(0).is_int());
 }
 
 #[test]