Add AsyncIterator support to c-api (#8285)

crates/capi/src/abstract_/iter.rs

@@ -9,6 +9,15 @@ pub unsafe extern "C" fn PyIter_Check(obj: *mut PyObject) -> c_int {
     with_vm(|_vm| Ok(PyIter::check(unsafe { &*obj })))
 }
 
+#[unsafe(no_mangle)]
+pub unsafe extern "C" fn PyAIter_Check(obj: *mut PyObject) -> c_int {
+    with_vm(|vm| {
+        Ok(unsafe { &*obj }
+            .class()
+            .has_attr(rustpython_vm::identifier!(vm, __anext__)))
+    })
+}
+
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn PyObject_GetIter(obj: *mut PyObject) -> *mut PyObject {
     with_vm(|vm| {
@@ -17,6 +26,11 @@ pub unsafe extern "C" fn PyObject_GetIter(obj: *mut PyObject) -> *mut PyObject {
     })
 }
 
+#[unsafe(no_mangle)]
+pub unsafe extern "C" fn PyObject_GetAIter(obj: *mut PyObject) -> *mut PyObject {
+    with_vm(|vm| unsafe { &*obj }.get_aiter(vm))
+}
+
 #[unsafe(no_mangle)]
 pub unsafe extern "C" fn PyIter_NextItem(iter: *mut PyObject, item: *mut *mut PyObject) -> c_int {
     with_vm(|vm| {