68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
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#ifndef PGIMPORT_H
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#define PGIMPORT_H
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/* Prefix when importing module */
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#define IMPPREFIX "pygame."
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#include "pgcompat.h"
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#define PYGAMEAPI_LOCAL_ENTRY "_PYGAME_C_API"
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#define PG_CAPSULE_NAME(m) (IMPPREFIX m "." PYGAMEAPI_LOCAL_ENTRY)
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/*
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* fill API slots defined by PYGAMEAPI_DEFINE_SLOTS/PYGAMEAPI_EXTERN_SLOTS
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*/
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#define _IMPORT_PYGAME_MODULE(module) \
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{ \
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PyObject *_mod_##module = PyImport_ImportModule(IMPPREFIX #module); \
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\
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if (_mod_##module != NULL) { \
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PyObject *_c_api = \
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PyObject_GetAttrString(_mod_##module, PYGAMEAPI_LOCAL_ENTRY); \
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\
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Py_DECREF(_mod_##module); \
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if (_c_api != NULL && PyCapsule_CheckExact(_c_api)) { \
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void **localptr = (void **)PyCapsule_GetPointer( \
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_c_api, PG_CAPSULE_NAME(#module)); \
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_PGSLOTS_##module = localptr; \
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} \
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Py_XDECREF(_c_api); \
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} \
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}
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#define PYGAMEAPI_IS_IMPORTED(module) (_PGSLOTS_##module != NULL)
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/*
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* source file must include one of these in order to use _IMPORT_PYGAME_MODULE.
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* this is set by import_pygame_*() functions.
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* disable with NO_PYGAME_C_API
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*/
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#define PYGAMEAPI_DEFINE_SLOTS(module) void **_PGSLOTS_##module = NULL
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#define PYGAMEAPI_EXTERN_SLOTS(module) extern void **_PGSLOTS_##module
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#define PYGAMEAPI_GET_SLOT(module, index) _PGSLOTS_##module[(index)]
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/*
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* disabled API with NO_PYGAME_C_API; do nothing instead
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*/
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#ifdef NO_PYGAME_C_API
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#undef PYGAMEAPI_DEFINE_SLOTS
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#undef PYGAMEAPI_EXTERN_SLOTS
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#define PYGAMEAPI_DEFINE_SLOTS(module)
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#define PYGAMEAPI_EXTERN_SLOTS(module)
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/* intentionally leave this defined to cause a compiler error *
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#define PYGAMEAPI_GET_SLOT(api_root, index)
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#undef PYGAMEAPI_GET_SLOT*/
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#undef _IMPORT_PYGAME_MODULE
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#define _IMPORT_PYGAME_MODULE(module)
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#endif /* NO_PYGAME_C_API */
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#define encapsulate_api(ptr, module) \
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PyCapsule_New(ptr, PG_CAPSULE_NAME(module), NULL)
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#endif /* ~PGIMPORT_H */
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