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py/objfun: Implement function.__code__ and function constructor.

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This allows retrieving the code object of a function using
`function.__code__`, and then reconstructing a function from a code object
using `FunctionType(code_object)`.

This feature is controlled by `MICROPY_PY_FUNCTION_ATTRS_CODE` and is
enabled at the full-features level.

Signed-off-by: Damien George <damien@micropython.org>
This commit is contained in:
Damien George
2025-01-20 22:23:48 +11:00
parent 62e821ccb8
commit ceb8ba60b4
8 changed files with 133 additions and 5 deletions
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7
py/mpconfig.h
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@@ -1041,6 +1041,11 @@ typedef double mp_float_t;
#define MICROPY_PY_FUNCTION_ATTRS (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_EXTRA_FEATURES)
#endif
// Whether to implement the __code__ attribute on functions, and function constructor
#ifndef MICROPY_PY_FUNCTION_ATTRS_CODE
#define MICROPY_PY_FUNCTION_ATTRS_CODE (MICROPY_CONFIG_ROM_LEVEL_AT_LEAST_FULL_FEATURES)
#endif
// Whether to support the descriptors __get__, __set__, __delete__
// This costs some code size and makes load/store/delete of instance
// attributes slower for the classes that use this feature
@@ -1135,7 +1140,7 @@ typedef double mp_float_t;
#define MICROPY_PY_BUILTINS_CODE_BASIC (2)
#define MICROPY_PY_BUILTINS_CODE_FULL (3)
#ifndef MICROPY_PY_BUILTINS_CODE
#define MICROPY_PY_BUILTINS_CODE (MICROPY_PY_SYS_SETTRACE ? MICROPY_PY_BUILTINS_CODE_FULL : (MICROPY_PY_BUILTINS_COMPILE ? MICROPY_PY_BUILTINS_CODE_MINIMUM : MICROPY_PY_BUILTINS_CODE_NONE))
#define MICROPY_PY_BUILTINS_CODE (MICROPY_PY_SYS_SETTRACE ? MICROPY_PY_BUILTINS_CODE_FULL : (MICROPY_PY_FUNCTION_ATTRS_CODE ? MICROPY_PY_BUILTINS_CODE_BASIC : (MICROPY_PY_BUILTINS_COMPILE ? MICROPY_PY_BUILTINS_CODE_MINIMUM : MICROPY_PY_BUILTINS_CODE_NONE)))
#endif
// Whether to support dict.fromkeys() class method