AsMapping::AS_MAPPING

Author: youknowone

Cargo.lock

@@ -4,6 +4,7 @@ use crate::{
     convert::ToPyObject,
     identifier,
     protocol::{PyIter, PyIterIter, PyMapping, PyMappingMethods},
+    types::AsMapping,
     AsObject, PyObject, PyObjectRef, PyPayload, PyResult, TryFromObject, VirtualMachine,
 };
 use std::{borrow::Borrow, marker::PhantomData};
@@ -110,7 +111,7 @@ impl ArgMapping {
     pub fn from_dict_exact(dict: PyDictRef) -> Self {
         Self {
             obj: dict.into(),
-            mapping_methods: PyDict::MAPPING_METHODS,
+            mapping_methods: PyDict::AS_MAPPING,
         }
     }
 

vm/src/function/protocol.rs

@@ -896,15 +896,14 @@ pub trait AsBuffer: PyPayload {
 
 #[pyimpl]
 pub trait AsMapping: PyPayload {
+    const AS_MAPPING: PyMappingMethods;
+
     #[inline]
     #[pyslot]
-    fn slot_as_mapping(zelf: &PyObject, vm: &VirtualMachine) -> PyMappingMethods {
-        let zelf = unsafe { zelf.downcast_unchecked_ref::<Self>() };
-        Self::as_mapping(zelf, vm)
+    fn as_mapping(_zelf: &PyObject, _vm: &VirtualMachine) -> PyMappingMethods {
+        Self::AS_MAPPING
     }
 
-    fn as_mapping(zelf: &Py<Self>, vm: &VirtualMachine) -> PyMappingMethods;
-
     fn mapping_downcast<'a>(mapping: &'a PyMapping) -> &'a Py<Self> {
         unsafe { mapping.obj.downcast_unchecked_ref() }
     }