WIP

extmod/modbtree.c

@@ -295,6 +295,7 @@ STATIC MP_DEFINE_CONST_DICT(btree_locals_dict, btree_locals_dict_table);
 STATIC const mp_obj_type_t btree_type = {
     { &mp_type_type },
     // Save on qstr's, reuse same as for module
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_btree,
     .print = btree_print,
     .getiter = btree_getiter,

extmod/modframebuf.c

@@ -602,6 +602,7 @@ STATIC MP_DEFINE_CONST_DICT(framebuf_locals_dict, framebuf_locals_dict_table);
 
 STATIC const mp_obj_type_t mp_type_framebuf = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_FrameBuffer,
     .make_new = framebuf_make_new,
     .buffer_p = { .get_buffer = framebuf_get_buffer },

extmod/moduasyncio.c

@@ -284,6 +284,7 @@ STATIC mp_obj_t task_iternext(mp_obj_t self_in) {
 
 STATIC const mp_obj_type_t task_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_Task,
     .make_new = task_make_new,
     .attr = task_attr,

extmod/moductypes.c

@@ -622,6 +622,7 @@ MP_DEFINE_CONST_FUN_OBJ_2(uctypes_struct_bytes_at_obj, uctypes_struct_bytes_at);
 
 STATIC const mp_obj_type_t uctypes_struct_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_struct,
     .print = uctypes_struct_print,
     .make_new = uctypes_struct_make_new,

extmod/modutimeq.c

@@ -193,6 +193,7 @@ STATIC MP_DEFINE_CONST_DICT(utimeq_locals_dict, utimeq_locals_dict_table);
 
 STATIC const mp_obj_type_t utimeq_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_utimeq,
     .make_new = utimeq_make_new,
     .unary_op = utimeq_unary_op,

extmod/moduzlib.c

@@ -122,6 +122,7 @@ STATIC const mp_stream_p_t decompio_stream_p = {
 #if !MICROPY_ENABLE_DYNRUNTIME
 STATIC const mp_obj_type_t decompio_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_DecompIO,
     .make_new = decompio_make_new,
     .protocol = &decompio_stream_p,

extmod/vfs_fat.c

@@ -474,6 +474,7 @@ STATIC const mp_vfs_proto_t fat_vfs_proto = {
 
 const mp_obj_type_t mp_fat_vfs_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_VfsFat,
     .make_new = fat_vfs_make_new,
     .protocol = &fat_vfs_proto,

extmod/vfs_fat_file.c

@@ -244,6 +244,7 @@ STATIC const mp_stream_p_t vfs_fat_fileio_stream_p = {
 
 const mp_obj_type_t mp_type_vfs_fat_fileio = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_FileIO,
     .print = file_obj_print,
     .make_new = file_obj_make_new,

extmod/vfs_lfsx.c

@@ -484,6 +484,7 @@ STATIC const mp_vfs_proto_t MP_VFS_LFSx(proto) = {
 
 const mp_obj_type_t MP_TYPE_VFS_LFSx = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     #if LFS_BUILD_VERSION == 1
     .name = MP_QSTR_VfsLfs1,
     #else

extmod/vfs_lfsx_file.c

@@ -226,6 +226,7 @@ STATIC const mp_stream_p_t MP_VFS_LFSx(fileio_stream_p) = {
 
 const mp_obj_type_t MP_TYPE_VFS_LFSx_(_fileio) = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_FileIO,
     .print = MP_VFS_LFSx(file_print),
     .getiter = mp_identity_getiter,

extmod/vfs_posix.c

@@ -352,6 +352,7 @@ STATIC const mp_vfs_proto_t vfs_posix_proto = {
 
 const mp_obj_type_t mp_type_vfs_posix = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_VfsPosix,
     .make_new = vfs_posix_make_new,
     .protocol = &vfs_posix_proto,

extmod/vfs_posix_file.c

@@ -213,6 +213,7 @@ STATIC const mp_stream_p_t vfs_posix_fileio_stream_p = {
 
 const mp_obj_type_t mp_type_vfs_posix_fileio = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_FileIO,
     .print = vfs_posix_file_print,
     .make_new = vfs_posix_file_make_new,

lib/utils/sys_stdio_mphal.c

@@ -129,6 +129,7 @@ STATIC const mp_stream_p_t stdio_obj_stream_p = {
 
 STATIC const mp_obj_type_t stdio_obj_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_FileIO,
     // TODO .make_new?
     .print = stdio_obj_print,

py/obj.h

@@ -515,6 +515,7 @@ typedef mp_obj_t (*mp_fun_kw_t)(size_t n, const mp_obj_t *, mp_map_t *);
 #define MP_TYPE_FLAG_EQ_HAS_NEQ_TEST (0x0010)
 #define MP_TYPE_FLAG_BINDS_SELF (0x0020)
 #define MP_TYPE_FLAG_BUILTIN_FUN (0x0040)
+#define MP_TYPE_FLAG_FULL (0x0080) // contains the 'ext' fields
 
 typedef enum {
     PRINT_STR = 0,
@@ -556,11 +557,51 @@ typedef struct _mp_buffer_info_t {
 #define MP_BUFFER_WRITE (2)
 #define MP_BUFFER_RW (MP_BUFFER_READ | MP_BUFFER_WRITE)
 typedef struct _mp_buffer_p_t {
-    mp_int_t (*get_buffer)(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags);
+    mp_getbuffer_fun_t get_buffer;
 } mp_buffer_p_t;
 bool mp_get_buffer(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags);
 void mp_get_buffer_raise(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_uint_t flags);
 
+struct _mp_obj_type_ext {
+    // Corresponds to __call__ special method, ie T(...).
+#define MP_TYPE_CALL(o) ext[0].call = o
+    mp_call_fun_t call;
+
+    // Implements unary and binary operations.
+    // Can return MP_OBJ_NULL if the operation is not supported.
+#define MP_TYPE_UNARY_OP(o) ext[0].unary_op = (o)
+    mp_unary_op_fun_t unary_op;
+#define MP_TYPE_BINARY_OP(o) ext[0].binary_op = (o)
+    mp_binary_op_fun_t binary_op;
+
+    // Implements load, store and delete subscripting:
+    //  - value = MP_OBJ_SENTINEL means load
+    //  - value = MP_OBJ_NULL means delete
+    //  - all other values mean store the value
+    // Can return MP_OBJ_NULL if operation not supported.
+#define MP_TYPE_SUBSCR(o) ext[0].subscr = (o)
+    mp_subscr_fun_t subscr;
+
+    // Corresponds to __iter__ special method.
+    // Can use the given mp_obj_iter_buf_t to store iterator object,
+    // otherwise can return a pointer to an object on the heap.
+#define MP_TYPE_GETITER(o) ext[0].getiter = (o)
+    mp_getiter_fun_t getiter;
+
+    // Corresponds to __next__ special method.  May return MP_OBJ_STOP_ITERATION
+    // as an optimisation instead of raising StopIteration() with no args.
+#define MP_TYPE_ITERNEXT(o) ext[0].iternext = (o)
+    mp_fun_1_t iternext;
+
+    // Implements the buffer protocol if supported by this type.
+#define MP_TYPE_GETBUFFER(o) ext[0].buffer_p.getbuffer = (o)
+    mp_buffer_p_t buffer_p;
+
+    // One of disjoint protocols (interfaces), like mp_stream_p_t, etc.
+#define MP_TYPE_PROTOCOL(o) ext[0].protocol = (o)
+    const void *protocol;
+};
+
 struct _mp_obj_type_t {
     // A type is an object so must start with this entry, which points to mp_type_type.
     mp_obj_base_t base;
@@ -571,19 +612,14 @@ struct _mp_obj_type_t {
     // The name of this type, a qstr.
     uint16_t name;
 
-    // Corresponds to __repr__ and __str__ special methods.
-    mp_print_fun_t print;
+    // A dict mapping qstrs to objects local methods/constants/etc.
+    struct _mp_obj_dict_t *locals_dict;
 
     // Corresponds to __new__ and __init__ special methods, to make an instance of the type.
     mp_make_new_fun_t make_new;
 
-    // Corresponds to __call__ special method, ie T(...).
-    mp_call_fun_t call;
-
-    // Implements unary and binary operations.
-    // Can return MP_OBJ_NULL if the operation is not supported.
-    mp_unary_op_fun_t unary_op;
-    mp_binary_op_fun_t binary_op;
+    // Corresponds to __repr__ and __str__ special methods.
+    mp_print_fun_t print;
 
     // Implements load, store and delete attribute.
     //
@@ -598,27 +634,46 @@ struct _mp_obj_type_t {
     //          for success set dest[0] = MP_OBJ_NULL
     mp_attr_fun_t attr;
 
-    // Implements load, store and delete subscripting:
-    //  - value = MP_OBJ_SENTINEL means load
-    //  - value = MP_OBJ_NULL means delete
-    //  - all other values mean store the value
-    // Can return MP_OBJ_NULL if operation not supported.
-    mp_subscr_fun_t subscr;
+    // A pointer to the parents of this type:
+    //  - 0 parents: pointer is NULL (object is implicitly the single parent)
+    //  - 1 parent: a pointer to the type of that parent
+    //  - 2 or more parents: pointer to a tuple object containing the parent types
+    const void *parent;
 
-    // Corresponds to __iter__ special method.
-    // Can use the given mp_obj_iter_buf_t to store iterator object,
-    // otherwise can return a pointer to an object on the heap.
-    mp_getiter_fun_t getiter;
+    struct _mp_obj_type_ext ext[];
+};
 
-    // Corresponds to __next__ special method.  May return MP_OBJ_STOP_ITERATION
-    // as an optimisation instead of raising StopIteration() with no args.
-    mp_fun_1_t iternext;
+struct _mp_obj_full_type_t {
+    // A type is an object so must start with this entry, which points to mp_type_type.
+    mp_obj_base_t base;
 
-    // Implements the buffer protocol if supported by this type.
-    mp_buffer_p_t buffer_p;
+    // Flags associated with this type.
+    uint16_t flags;
 
-    // One of disjoint protocols (interfaces), like mp_stream_p_t, etc.
-    const void *protocol;
+    // The name of this type, a qstr.
+    uint16_t name;
+
+    // A dict mapping qstrs to objects local methods/constants/etc.
+    struct _mp_obj_dict_t *locals_dict;
+
+    // Corresponds to __new__ and __init__ special methods, to make an instance of the type.
+    mp_make_new_fun_t make_new;
+
+    // Corresponds to __repr__ and __str__ special methods.
+    mp_print_fun_t print;
+
+    // Implements load, store and delete attribute.
+    //
+    // dest[0] = MP_OBJ_NULL means load
+    //  return: for fail, do nothing
+    //          for attr, dest[0] = value
+    //          for method, dest[0] = method, dest[1] = self
+    //
+    // dest[0,1] = {MP_OBJ_SENTINEL, MP_OBJ_NULL} means delete
+    // dest[0,1] = {MP_OBJ_SENTINEL, object} means store
+    //  return: for fail, do nothing
+    //          for success set dest[0] = MP_OBJ_NULL
+    mp_attr_fun_t attr;
 
     // A pointer to the parents of this type:
     //  - 0 parents: pointer is NULL (object is implicitly the single parent)
@@ -626,10 +681,10 @@ struct _mp_obj_type_t {
     //  - 2 or more parents: pointer to a tuple object containing the parent types
     const void *parent;
 
-    // A dict mapping qstrs to objects local methods/constants/etc.
-    struct _mp_obj_dict_t *locals_dict;
+    struct _mp_obj_type_ext ext[1];
 };
 
+
 extern size_t mp_type_size(const mp_obj_type_t *);
 extern mp_call_fun_t mp_type_call(const mp_obj_type_t *);
 extern mp_unary_op_fun_t mp_type_unary_op(const mp_obj_type_t *);

py/objattrtuple.c

@@ -83,6 +83,7 @@ mp_obj_t mp_obj_new_attrtuple(const qstr *fields, size_t n, const mp_obj_t *item
 
 const mp_obj_type_t mp_type_attrtuple = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_tuple, // reuse tuple to save on a qstr
     .print = mp_obj_attrtuple_print,
     .unary_op = mp_obj_tuple_unary_op,

py/objbool.c

@@ -86,7 +86,7 @@ STATIC mp_obj_t bool_binary_op(mp_binary_op_t op, mp_obj_t lhs_in, mp_obj_t rhs_
 
 const mp_obj_type_t mp_type_bool = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE, // can match all numeric types
+    .flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_FULL, // can match all numeric types
     .name = MP_QSTR_bool,
     .print = bool_print,
     .make_new = bool_make_new,

py/objboundmeth.c

@@ -97,6 +97,7 @@ STATIC void bound_meth_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
 
 STATIC const mp_obj_type_t mp_type_bound_meth = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_bound_method,
     #if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
     .print = bound_meth_print,

py/objclosure.c

@@ -80,7 +80,7 @@ STATIC void closure_print(const mp_print_t *print, mp_obj_t o_in, mp_print_kind_
 
 const mp_obj_type_t mp_type_closure = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_BINDS_SELF,
+    .flags = MP_TYPE_FLAG_BINDS_SELF | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_closure,
     #if MICROPY_ERROR_REPORTING == MICROPY_ERROR_REPORTING_DETAILED
     .print = closure_print,

py/objcomplex.c

@@ -157,7 +157,7 @@ STATIC void complex_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
 
 const mp_obj_type_t mp_type_complex = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_EQ_NOT_REFLEXIVE | MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE,
+    .flags = MP_TYPE_FLAG_EQ_NOT_REFLEXIVE | MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_complex,
     .print = complex_print,
     .make_new = complex_make_new,

py/objdeque.c

@@ -160,6 +160,7 @@ STATIC MP_DEFINE_CONST_DICT(deque_locals_dict, deque_locals_dict_table);
 
 const mp_obj_type_t mp_type_deque = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_deque,
     .make_new = deque_make_new,
     .unary_op = deque_unary_op,

py/objdict.c

@@ -459,6 +459,7 @@ STATIC mp_obj_t dict_view_it_iternext(mp_obj_t self_in) {
 
 STATIC const mp_obj_type_t mp_type_dict_view_it = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_iterator,
     .getiter = mp_identity_getiter,
     .iternext = dict_view_it_iternext,
@@ -510,6 +511,7 @@ STATIC mp_obj_t dict_view_binary_op(mp_binary_op_t op, mp_obj_t lhs_in, mp_obj_t
 
 STATIC const mp_obj_type_t mp_type_dict_view = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_dict_view,
     .print = dict_view_print,
     .binary_op = dict_view_binary_op,
@@ -584,6 +586,7 @@ STATIC MP_DEFINE_CONST_DICT(dict_locals_dict, dict_locals_dict_table);
 
 const mp_obj_type_t mp_type_dict = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_dict,
     .print = dict_print,
     .make_new = mp_obj_dict_make_new,
@@ -597,6 +600,7 @@ const mp_obj_type_t mp_type_dict = {
 #if MICROPY_PY_COLLECTIONS_ORDEREDDICT
 const mp_obj_type_t mp_type_ordereddict = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_OrderedDict,
     .print = dict_print,
     .make_new = mp_obj_dict_make_new,

py/objenumerate.c

@@ -71,6 +71,7 @@ STATIC mp_obj_t enumerate_make_new(const mp_obj_type_t *type, size_t n_args, con
 
 const mp_obj_type_t mp_type_enumerate = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_enumerate,
     .make_new = enumerate_make_new,
     .iternext = enumerate_iternext,

py/objexcept.c

@@ -626,6 +626,7 @@ STATIC const mp_obj_namedtuple_type_t code_type_obj = {
         .base = {
             .type = &mp_type_type
         },
+        .flags = MP_TYPE_FLAG_FULL,
         .name = MP_QSTR_code,
         .print = namedtuple_print,
         .make_new = namedtuple_make_new,
@@ -726,6 +727,7 @@ STATIC const mp_obj_namedtuple_type_t traceback_type_obj = {
         .base = {
             .type = &mp_type_type
         },
+        .flags = MP_TYPE_FLAG_FULL,
         .name = MP_QSTR_traceback,
         .print = namedtuple_print,
         .make_new = namedtuple_make_new,

py/objfilter.c

@@ -63,6 +63,7 @@ STATIC mp_obj_t filter_iternext(mp_obj_t self_in) {
 
 const mp_obj_type_t mp_type_filter = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_filter,
     .make_new = filter_make_new,
     .getiter = mp_identity_getiter,

py/objfloat.c

@@ -181,7 +181,7 @@ STATIC mp_obj_t float_binary_op(mp_binary_op_t op, mp_obj_t lhs_in, mp_obj_t rhs
 
 const mp_obj_type_t mp_type_float = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_EQ_NOT_REFLEXIVE | MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE,
+    .flags = MP_TYPE_FLAG_EQ_NOT_REFLEXIVE | MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_float,
     .print = float_print,
     .make_new = float_make_new,

py/objfun.c

@@ -60,7 +60,7 @@ STATIC mp_obj_t fun_builtin_0_call(mp_obj_t self_in, size_t n_args, size_t n_kw,
 
 const mp_obj_type_t mp_type_fun_builtin_0 = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_BINDS_SELF | MP_TYPE_FLAG_BUILTIN_FUN,
+    .flags = MP_TYPE_FLAG_BINDS_SELF | MP_TYPE_FLAG_BUILTIN_FUN | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_function,
     .call = fun_builtin_0_call,
     .unary_op = mp_generic_unary_op,

py/objgenerator.c

@@ -157,7 +157,7 @@ static void gen_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
 
 const mp_obj_type_t mp_type_gen_wrap = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_BINDS_SELF,
+    .flags = MP_TYPE_FLAG_BINDS_SELF | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_generator,
     .call = gen_wrap_call,
     .unary_op = mp_generic_unary_op,
@@ -412,6 +412,7 @@ STATIC MP_DEFINE_CONST_DICT(gen_instance_locals_dict, gen_instance_locals_dict_t
 
 const mp_obj_type_t mp_type_gen_instance = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_generator,
     .print = gen_instance_print,
     .unary_op = mp_generic_unary_op,

py/objgetitemiter.c

@@ -59,6 +59,7 @@ STATIC mp_obj_t it_iternext(mp_obj_t self_in) {
 
 STATIC const mp_obj_type_t mp_type_it = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_iterator,
     .getiter = mp_identity_getiter,
     .iternext = it_iternext,

py/objint.c

@@ -571,6 +571,7 @@ STATIC MP_DEFINE_CONST_DICT(int_locals_dict, int_locals_dict_table);
 const mp_obj_type_t mp_type_int = {
     { &mp_type_type },
     .name = MP_QSTR_int,
+    .flags = MP_TYPE_FLAG_FULL,
     .print = mp_obj_int_print,
     .make_new = mp_obj_int_make_new,
     .unary_op = mp_obj_int_unary_op,

py/objlist.c

@@ -461,6 +461,7 @@ STATIC MP_DEFINE_CONST_DICT(list_locals_dict, list_locals_dict_table);
 
 const mp_obj_type_t mp_type_list = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_list,
     .print = list_print,
     .make_new = list_make_new,

py/objmap.c

@@ -66,6 +66,7 @@ STATIC mp_obj_t map_iternext(mp_obj_t self_in) {
 
 const mp_obj_type_t mp_type_map = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_map,
     .make_new = map_make_new,
     .getiter = mp_identity_getiter,

py/objnamedtuple.c

@@ -168,7 +168,7 @@ mp_obj_namedtuple_type_t *mp_obj_new_namedtuple_base(size_t n_fields, mp_obj_t *
 STATIC mp_obj_t mp_obj_new_namedtuple_type(qstr name, size_t n_fields, mp_obj_t *fields) {
     mp_obj_namedtuple_type_t *o = mp_obj_new_namedtuple_base(n_fields, fields);
     o->base.base.type = &mp_type_type;
-    o->base.flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE; // can match tuple
+    o->base.flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_FULL; // can match tuple
     o->base.name = name;
     o->base.print = namedtuple_print;
     o->base.make_new = namedtuple_make_new;

py/objnone.c

@@ -45,6 +45,7 @@ STATIC void none_print(const mp_print_t *print, mp_obj_t self_in, mp_print_kind_
 
 const mp_obj_type_t mp_type_NoneType = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_NoneType,
     .print = none_print,
     .unary_op = mp_generic_unary_op,

py/objpolyiter.c

@@ -47,6 +47,7 @@ STATIC mp_obj_t polymorph_it_iternext(mp_obj_t self_in) {
 
 const mp_obj_type_t mp_type_polymorph_iter = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_iterator,
     .getiter = mp_identity_getiter,
     .iternext = polymorph_it_iternext,

py/objrange.c

@@ -54,6 +54,7 @@ STATIC mp_obj_t range_it_iternext(mp_obj_t o_in) {
 
 STATIC const mp_obj_type_t mp_type_range_it = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_iterator,
     .getiter = mp_identity_getiter,
     .iternext = range_it_iternext,

py/objreversed.c

@@ -71,6 +71,7 @@ STATIC mp_obj_t reversed_iternext(mp_obj_t self_in) {
 
 const mp_obj_type_t mp_type_reversed = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_reversed,
     .make_new = reversed_make_new,
     .getiter = mp_identity_getiter,

py/objset.c

@@ -545,6 +545,7 @@ STATIC MP_DEFINE_CONST_DICT(set_locals_dict, set_locals_dict_table);
 
 const mp_obj_type_t mp_type_set = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_set,
     .print = set_print,
     .make_new = set_make_new,
@@ -570,7 +571,7 @@ STATIC MP_DEFINE_CONST_DICT(frozenset_locals_dict, frozenset_locals_dict_table);
 
 const mp_obj_type_t mp_type_frozenset = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE,
+    .flags = MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_frozenset,
     .print = set_print,
     .make_new = set_make_new,

py/objsingleton.c

@@ -45,6 +45,7 @@ STATIC void singleton_print(const mp_print_t *print, mp_obj_t self_in, mp_print_
 
 const mp_obj_type_t mp_type_singleton = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_,
     .print = singleton_print,
     .unary_op = mp_generic_unary_op,

py/objstr.c

@@ -2035,6 +2035,7 @@ const mp_obj_type_t mp_type_str = {
 // Reuses most of methods from str
 const mp_obj_type_t mp_type_bytes = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_bytes,
     .print = str_print,
     .make_new = bytes_make_new,

py/objstringio.c

@@ -246,6 +246,7 @@ STATIC const mp_stream_p_t stringio_stream_p = {
 
 const mp_obj_type_t mp_type_stringio = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_StringIO,
     .print = stringio_print,
     .make_new = stringio_make_new,
@@ -265,6 +266,7 @@ STATIC const mp_stream_p_t bytesio_stream_p = {
 
 const mp_obj_type_t mp_type_bytesio = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_BytesIO,
     .print = stringio_print,
     .make_new = stringio_make_new,

py/objstrunicode.c

@@ -291,6 +291,7 @@ STATIC MP_DEFINE_CONST_DICT(struni_locals_dict, struni_locals_dict_table);
 
 const mp_obj_type_t mp_type_str = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_str,
     .print = uni_print,
     .make_new = mp_obj_str_make_new,

py/objtuple.c

@@ -229,6 +229,7 @@ STATIC MP_DEFINE_CONST_DICT(tuple_locals_dict, tuple_locals_dict_table);
 
 const mp_obj_type_t mp_type_tuple = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_tuple,
     .print = mp_obj_tuple_print,
     .make_new = mp_obj_tuple_make_new,

py/objtype.c

@@ -440,7 +440,7 @@ STATIC mp_obj_t instance_unary_op(mp_unary_op_t op, mp_obj_t self_in) {
     struct class_lookup_data lookup = {
         .obj = self,
         .attr = op_name,
-        .meth_offset = offsetof(mp_obj_type_t, unary_op),
+        .meth_offset = offsetof(mp_obj_type_t, ext[0].unary_op),
         .dest = member,
         .is_type = false,
     };
@@ -568,7 +568,7 @@ retry:;
     struct class_lookup_data lookup = {
         .obj = lhs,
         .attr = op_name,
-        .meth_offset = offsetof(mp_obj_type_t, binary_op),
+        .meth_offset = offsetof(mp_obj_type_t, ext[0].binary_op),
         .dest = dest,
         .is_type = false,
     };
@@ -839,7 +839,7 @@ STATIC mp_obj_t instance_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value
     mp_obj_t member[4] = {MP_OBJ_NULL, MP_OBJ_NULL, index, value};
     struct class_lookup_data lookup = {
         .obj = self,
-        .meth_offset = offsetof(mp_obj_type_t, subscr),
+        .meth_offset = offsetof(mp_obj_type_t, ext[0].subscr),
         .dest = member,
         .is_type = false,
     };
@@ -856,7 +856,7 @@ STATIC mp_obj_t instance_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value
     mp_obj_class_lookup(&lookup, self->base.type);
     if (member[0] == MP_OBJ_SENTINEL) {
         const mp_obj_type_t *subobj_type = mp_obj_get_type(self->subobj[0]);
-        mp_obj_t ret = subobj_type->subscr(self_in, index, value);
+        mp_obj_t ret = subobj_type->ext[0].subscr(self_in, index, value);
         // May have called port specific C code. Make sure it didn't mess up the heap.
         assert_heap_ok();
         return ret;
@@ -878,7 +878,7 @@ STATIC mp_obj_t mp_obj_instance_get_call(mp_obj_t self_in, mp_obj_t *member) {
     struct class_lookup_data lookup = {
         .obj = self,
         .attr = MP_QSTR___call__,
-        .meth_offset = offsetof(mp_obj_type_t, call),
+        .meth_offset = offsetof(mp_obj_type_t, ext[0].call),
         .dest = member,
         .is_type = false,
     };
@@ -917,7 +917,7 @@ mp_obj_t mp_obj_instance_getiter(mp_obj_t self_in, mp_obj_iter_buf_t *iter_buf)
     struct class_lookup_data lookup = {
         .obj = self,
         .attr = MP_QSTR___iter__,
-        .meth_offset = offsetof(mp_obj_type_t, getiter),
+        .meth_offset = offsetof(mp_obj_type_t, ext[0].getiter),
         .dest = member,
         .is_type = false,
     };
@@ -929,7 +929,7 @@ mp_obj_t mp_obj_instance_getiter(mp_obj_t self_in, mp_obj_iter_buf_t *iter_buf)
         if (iter_buf == NULL) {
             iter_buf = m_new_obj(mp_obj_iter_buf_t);
         }
-        return type->getiter(self->subobj[0], iter_buf);
+        return type->ext[0].getiter(self->subobj[0], iter_buf);
     } else {
         return mp_call_method_n_kw(0, 0, member);
     }
@@ -941,14 +941,14 @@ STATIC mp_int_t instance_get_buffer(mp_obj_t self_in, mp_buffer_info_t *bufinfo,
     struct class_lookup_data lookup = {
         .obj = self,
         .attr = MP_QSTR_, // don't actually look for a method
-        .meth_offset = offsetof(mp_obj_type_t, buffer_p.get_buffer),
+        .meth_offset = offsetof(mp_obj_type_t, ext[0].buffer_p.get_buffer),
         .dest = member,
         .is_type = false,
     };
     mp_obj_class_lookup(&lookup, self->base.type);
     if (member[0] == MP_OBJ_SENTINEL) {
         const mp_obj_type_t *type = mp_obj_get_type(self->subobj[0]);
-        return type->buffer_p.get_buffer(self->subobj[0], bufinfo, flags);
+        return type->ext[0].buffer_p.get_buffer(self->subobj[0], bufinfo, flags);
     } else {
         return 1; // object does not support buffer protocol
     }
@@ -1146,6 +1146,7 @@ STATIC void type_attr(mp_obj_t self_in, qstr attr, mp_obj_t *dest) {
 
 const mp_obj_type_t mp_type_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_type,
     .print = type_print,
     .make_new = type_make_new,
@@ -1167,7 +1168,7 @@ mp_obj_t mp_obj_new_type(qstr name, mp_obj_t bases_tuple, mp_obj_t locals_dict)
 
     // Basic validation of base classes
     uint16_t base_flags = MP_TYPE_FLAG_EQ_NOT_REFLEXIVE
-        | MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_EQ_HAS_NEQ_TEST;
+        | MP_TYPE_FLAG_EQ_CHECKS_OTHER_TYPE | MP_TYPE_FLAG_EQ_HAS_NEQ_TEST | MP_TYPE_FLAG_FULL;
     size_t bases_len;
     mp_obj_t *bases_items;
     mp_obj_tuple_get(bases_tuple, &bases_len, &bases_items);

py/objzip.c

@@ -69,6 +69,7 @@ STATIC mp_obj_t zip_iternext(mp_obj_t self_in) {
 
 const mp_obj_type_t mp_type_zip = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_zip,
     .make_new = zip_make_new,
     .getiter = mp_identity_getiter,

py/opmethods.c

@@ -29,24 +29,25 @@
 
 STATIC mp_obj_t op_getitem(mp_obj_t self_in, mp_obj_t key_in) {
     const mp_obj_type_t *type = mp_obj_get_type(self_in);
-    return type->subscr(self_in, key_in, MP_OBJ_SENTINEL);
+    return type->ext[0].subscr(self_in, key_in, MP_OBJ_SENTINEL);
 }
 MP_DEFINE_CONST_FUN_OBJ_2(mp_op_getitem_obj, op_getitem);
 
 STATIC mp_obj_t op_setitem(mp_obj_t self_in, mp_obj_t key_in, mp_obj_t value_in) {
     const mp_obj_type_t *type = mp_obj_get_type(self_in);
-    return type->subscr(self_in, key_in, value_in);
+    return type->ext[0].subscr(self_in, key_in, value_in);
 }
 MP_DEFINE_CONST_FUN_OBJ_3(mp_op_setitem_obj, op_setitem);
 
 STATIC mp_obj_t op_delitem(mp_obj_t self_in, mp_obj_t key_in) {
     const mp_obj_type_t *type = mp_obj_get_type(self_in);
-    return type->subscr(self_in, key_in, MP_OBJ_NULL);
+    return type->ext[0].subscr(self_in, key_in, MP_OBJ_NULL);
 }
 MP_DEFINE_CONST_FUN_OBJ_2(mp_op_delitem_obj, op_delitem);
 
 STATIC mp_obj_t op_contains(mp_obj_t lhs_in, mp_obj_t rhs_in) {
     const mp_obj_type_t *type = mp_obj_get_type(lhs_in);
-    return type->binary_op(MP_BINARY_OP_CONTAINS, lhs_in, rhs_in);
+    mp_binary_op_fun_t binary_op = mp_type_binary_op(type);
+    return binary_op(MP_BINARY_OP_CONTAINS, lhs_in, rhs_in);
 }
 MP_DEFINE_CONST_FUN_OBJ_2(mp_op_contains_obj, op_contains);

py/runtime.c

@@ -1003,7 +1003,7 @@ STATIC mp_obj_t checked_fun_call(mp_obj_t self_in, size_t n_args, size_t n_kw, c
 
 STATIC const mp_obj_type_t mp_type_checked_fun = {
     { &mp_type_type },
-    .flags = MP_TYPE_FLAG_BINDS_SELF,
+    .flags = MP_TYPE_FLAG_BINDS_SELF | MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_function,
     .call = checked_fun_call,
 };

shared-bindings/busio/UART.c

@@ -422,6 +422,7 @@ STATIC const mp_stream_p_t uart_stream_p = {
 
 const mp_obj_type_t busio_uart_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_UART,
     .make_new = busio_uart_make_new,
     .getiter = mp_identity_getiter,

shared-bindings/nvm/ByteArray.c

@@ -168,6 +168,7 @@ STATIC mp_obj_t nvm_bytearray_subscr(mp_obj_t self_in, mp_obj_t index_in, mp_obj
 
 const mp_obj_type_t nvm_bytearray_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_ByteArray,
     .subscr = nvm_bytearray_subscr,
     .unary_op = nvm_bytearray_unary_op,

shared-bindings/time/__init__.c

@@ -112,6 +112,7 @@ const mp_obj_namedtuple_type_t struct_time_type_obj = {
         .base = {
             .type = &mp_type_type
         },
+        .flags = MP_TYPE_FLAG_FULL,
         .name = MP_QSTR_struct_time,
         .print = namedtuple_print,
         .make_new = struct_time_make_new,

shared-bindings/usb_cdc/Serial.c

@@ -310,6 +310,7 @@ STATIC const mp_stream_p_t usb_cdc_serial_stream_p = {
 
 const mp_obj_type_t usb_cdc_serial_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_Serial,
     .getiter = mp_identity_getiter,
     .iternext = mp_stream_unbuffered_iter,

shared-bindings/usb_midi/PortIn.c

@@ -113,6 +113,7 @@ STATIC const mp_stream_p_t usb_midi_portin_stream_p = {
 
 const mp_obj_type_t usb_midi_portin_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_PortIn,
     .getiter = mp_identity_getiter,
     .iternext = mp_stream_unbuffered_iter,

shared-bindings/usb_midi/PortOut.c

@@ -94,6 +94,7 @@ STATIC const mp_stream_p_t usb_midi_portout_stream_p = {
 
 const mp_obj_type_t usb_midi_portout_type = {
     { &mp_type_type },
+    .flags = MP_TYPE_FLAG_FULL,
     .name = MP_QSTR_PortOut,
     .getiter = mp_identity_getiter,
     .iternext = mp_stream_unbuffered_iter,