TonBERRY/micropython
3
0
Fork 0
Code Pull Requests Activity

py/obj: Add "full" and "empty" non-variable-length mp_obj_type_t.

Browse Source 
This will always have the maximum/minimum size of a mp_obj_type_t
representation and can be used as a member in other structs.

Signed-off-by: Jim Mussared <jim.mussared@gmail.com>
This commit is contained in:
Jim Mussared
2022-04-22 13:05:56 +10:00
committed by Damien George
parent 5ddf671944
commit e8355eb163
15 changed files with 40 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
py/obj.h
View File

@@ -562,6 +562,9 @@ typedef mp_int_t (*mp_buffer_fun_t)(mp_obj_t obj, mp_buffer_info_t *bufinfo, mp_
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);
// This struct will be updated to become a variable sized struct. In order to
// use this as a member, or allocate dynamically, use the mp_obj_empty_type_t
// or mp_obj_full_type_t structs below (which must be kept in sync).
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;
@@ -632,6 +635,13 @@ struct _mp_obj_type_t {
struct _mp_obj_dict_t *locals_dict;
};
// Non-variable sized versions of mp_obj_type_t to be used as a member
// in other structs or for dynamic allocation. The fields are exactly
// as in mp_obj_type_t, but with a fixed size for the flexible array
// members.
typedef mp_obj_type_t mp_obj_empty_type_t;
typedef mp_obj_type_t mp_obj_full_type_t;
#define MP_TYPE_NULL_MAKE_NEW (NULL)
// Implementation of MP_DEFINE_CONST_OBJ_TYPE for each number of arguments.
@@ -657,14 +667,15 @@ struct _mp_obj_type_t {
// of the 30th argument (30 is 13*2 + 4).
#define MP_DEFINE_CONST_OBJ_TYPE_NARGS(_1, _2, _3, _4, _5, _6, _7, _8, _9, _10, _11, _12, _13, _14, _15, _16, _17, _18, _19, _20, _21, _22, _23, _24, _25, _26, _27, _28, _29, N, ...) MP_DEFINE_CONST_OBJ_TYPE_NARGS_##N
// This macro is used to define a object type in ROM.
// These macros are used to define a object type in ROM.
// Invoke as MP_DEFINE_CONST_OBJ_TYPE(_typename, _name, _flags, _make_new [, slot, func]*)
// It uses the number of arguments to select which MP_DEFINE_CONST_OBJ_TYPE_*
// They use the number of arguments to select which MP_DEFINE_CONST_OBJ_TYPE_*
// macro to use based on the number of arguments. It works by shifting the
// numeric values 12, 11, ... 0 by the number of arguments, such that the
// 30th argument ends up being the number to use. The _INV values are
// placeholders because the slot arguments come in pairs.
#define MP_DEFINE_CONST_OBJ_TYPE(...) MP_DEFINE_CONST_OBJ_TYPE_EXPAND(MP_DEFINE_CONST_OBJ_TYPE_NARGS(__VA_ARGS__, _INV, 12, _INV, 11, _INV, 10, _INV, 9, _INV, 8, _INV, 7, _INV, 6, _INV, 5, _INV, 4, _INV, 3, _INV, 2, _INV, 1, _INV, 0)(mp_obj_type_t, __VA_ARGS__))
#define MP_DEFINE_CONST_OBJ_FULL_TYPE(...) MP_DEFINE_CONST_OBJ_TYPE_EXPAND(MP_DEFINE_CONST_OBJ_TYPE_NARGS(__VA_ARGS__, _INV, 12, _INV, 11, _INV, 10, _INV, 9, _INV, 8, _INV, 7, _INV, 6, _INV, 5, _INV, 4, _INV, 3, _INV, 2, _INV, 1, _INV, 0)(mp_obj_full_type_t, __VA_ARGS__))
// Constant types, globally accessible
extern const mp_obj_type_t mp_type_type;