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- #define _CFFI_
-
- /* We try to define Py_LIMITED_API before including Python.h.
-
- Mess: we can only define it if Py_DEBUG, Py_TRACE_REFS and
- Py_REF_DEBUG are not defined. This is a best-effort approximation:
- we can learn about Py_DEBUG from pyconfig.h, but it is unclear if
- the same works for the other two macros. Py_DEBUG implies them,
- but not the other way around.
-
- The implementation is messy (issue #350): on Windows, with _MSC_VER,
- we have to define Py_LIMITED_API even before including pyconfig.h.
- In that case, we guess what pyconfig.h will do to the macros above,
- and check our guess after the #include.
-
- Note that on Windows, with CPython 3.x, you need >= 3.5 and virtualenv
- version >= 16.0.0. With older versions of either, you don't get a
- copy of PYTHON3.DLL in the virtualenv. We can't check the version of
- CPython *before* we even include pyconfig.h. ffi.set_source() puts
- a ``#define _CFFI_NO_LIMITED_API'' at the start of this file if it is
- running on Windows < 3.5, as an attempt at fixing it, but that's
- arguably wrong because it may not be the target version of Python.
- Still better than nothing I guess. As another workaround, you can
- remove the definition of Py_LIMITED_API here.
-
- See also 'py_limited_api' in cffi/setuptools_ext.py.
- */
- #if !defined(_CFFI_USE_EMBEDDING) && !defined(Py_LIMITED_API)
- # ifdef _MSC_VER
- # if !defined(_DEBUG) && !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_REF_DEBUG) && !defined(_CFFI_NO_LIMITED_API)
- # define Py_LIMITED_API
- # endif
- # include <pyconfig.h>
- /* sanity-check: Py_LIMITED_API will cause crashes if any of these
- are also defined. Normally, the Python file PC/pyconfig.h does not
- cause any of these to be defined, with the exception that _DEBUG
- causes Py_DEBUG. Double-check that. */
- # ifdef Py_LIMITED_API
- # if defined(Py_DEBUG)
- # error "pyconfig.h unexpectedly defines Py_DEBUG, but Py_LIMITED_API is set"
- # endif
- # if defined(Py_TRACE_REFS)
- # error "pyconfig.h unexpectedly defines Py_TRACE_REFS, but Py_LIMITED_API is set"
- # endif
- # if defined(Py_REF_DEBUG)
- # error "pyconfig.h unexpectedly defines Py_REF_DEBUG, but Py_LIMITED_API is set"
- # endif
- # endif
- # else
- # include <pyconfig.h>
- # if !defined(Py_DEBUG) && !defined(Py_TRACE_REFS) && !defined(Py_REF_DEBUG) && !defined(_CFFI_NO_LIMITED_API)
- # define Py_LIMITED_API
- # endif
- # endif
- #endif
-
- #include <Python.h>
- #ifdef __cplusplus
- extern "C" {
- #endif
- #include <stddef.h>
- #include "parse_c_type.h"
-
- /* this block of #ifs should be kept exactly identical between
- c/_cffi_backend.c, cffi/vengine_cpy.py, cffi/vengine_gen.py
- and cffi/_cffi_include.h */
- #if defined(_MSC_VER)
- # include <malloc.h> /* for alloca() */
- # if _MSC_VER < 1600 /* MSVC < 2010 */
- typedef __int8 int8_t;
- typedef __int16 int16_t;
- typedef __int32 int32_t;
- typedef __int64 int64_t;
- typedef unsigned __int8 uint8_t;
- typedef unsigned __int16 uint16_t;
- typedef unsigned __int32 uint32_t;
- typedef unsigned __int64 uint64_t;
- typedef __int8 int_least8_t;
- typedef __int16 int_least16_t;
- typedef __int32 int_least32_t;
- typedef __int64 int_least64_t;
- typedef unsigned __int8 uint_least8_t;
- typedef unsigned __int16 uint_least16_t;
- typedef unsigned __int32 uint_least32_t;
- typedef unsigned __int64 uint_least64_t;
- typedef __int8 int_fast8_t;
- typedef __int16 int_fast16_t;
- typedef __int32 int_fast32_t;
- typedef __int64 int_fast64_t;
- typedef unsigned __int8 uint_fast8_t;
- typedef unsigned __int16 uint_fast16_t;
- typedef unsigned __int32 uint_fast32_t;
- typedef unsigned __int64 uint_fast64_t;
- typedef __int64 intmax_t;
- typedef unsigned __int64 uintmax_t;
- # else
- # include <stdint.h>
- # endif
- # if _MSC_VER < 1800 /* MSVC < 2013 */
- # ifndef __cplusplus
- typedef unsigned char _Bool;
- # endif
- # endif
- #else
- # include <stdint.h>
- # if (defined (__SVR4) && defined (__sun)) || defined(_AIX) || defined(__hpux)
- # include <alloca.h>
- # endif
- #endif
-
- #ifdef __GNUC__
- # define _CFFI_UNUSED_FN __attribute__((unused))
- #else
- # define _CFFI_UNUSED_FN /* nothing */
- #endif
-
- #ifdef __cplusplus
- # ifndef _Bool
- typedef bool _Bool; /* semi-hackish: C++ has no _Bool; bool is builtin */
- # endif
- #endif
-
- /********** CPython-specific section **********/
- #ifndef PYPY_VERSION
-
-
- #if PY_MAJOR_VERSION >= 3
- # define PyInt_FromLong PyLong_FromLong
- #endif
-
- #define _cffi_from_c_double PyFloat_FromDouble
- #define _cffi_from_c_float PyFloat_FromDouble
- #define _cffi_from_c_long PyInt_FromLong
- #define _cffi_from_c_ulong PyLong_FromUnsignedLong
- #define _cffi_from_c_longlong PyLong_FromLongLong
- #define _cffi_from_c_ulonglong PyLong_FromUnsignedLongLong
- #define _cffi_from_c__Bool PyBool_FromLong
-
- #define _cffi_to_c_double PyFloat_AsDouble
- #define _cffi_to_c_float PyFloat_AsDouble
-
- #define _cffi_from_c_int(x, type) \
- (((type)-1) > 0 ? /* unsigned */ \
- (sizeof(type) < sizeof(long) ? \
- PyInt_FromLong((long)x) : \
- sizeof(type) == sizeof(long) ? \
- PyLong_FromUnsignedLong((unsigned long)x) : \
- PyLong_FromUnsignedLongLong((unsigned long long)x)) : \
- (sizeof(type) <= sizeof(long) ? \
- PyInt_FromLong((long)x) : \
- PyLong_FromLongLong((long long)x)))
-
- #define _cffi_to_c_int(o, type) \
- ((type)( \
- sizeof(type) == 1 ? (((type)-1) > 0 ? (type)_cffi_to_c_u8(o) \
- : (type)_cffi_to_c_i8(o)) : \
- sizeof(type) == 2 ? (((type)-1) > 0 ? (type)_cffi_to_c_u16(o) \
- : (type)_cffi_to_c_i16(o)) : \
- sizeof(type) == 4 ? (((type)-1) > 0 ? (type)_cffi_to_c_u32(o) \
- : (type)_cffi_to_c_i32(o)) : \
- sizeof(type) == 8 ? (((type)-1) > 0 ? (type)_cffi_to_c_u64(o) \
- : (type)_cffi_to_c_i64(o)) : \
- (Py_FatalError("unsupported size for type " #type), (type)0)))
-
- #define _cffi_to_c_i8 \
- ((int(*)(PyObject *))_cffi_exports[1])
- #define _cffi_to_c_u8 \
- ((int(*)(PyObject *))_cffi_exports[2])
- #define _cffi_to_c_i16 \
- ((int(*)(PyObject *))_cffi_exports[3])
- #define _cffi_to_c_u16 \
- ((int(*)(PyObject *))_cffi_exports[4])
- #define _cffi_to_c_i32 \
- ((int(*)(PyObject *))_cffi_exports[5])
- #define _cffi_to_c_u32 \
- ((unsigned int(*)(PyObject *))_cffi_exports[6])
- #define _cffi_to_c_i64 \
- ((long long(*)(PyObject *))_cffi_exports[7])
- #define _cffi_to_c_u64 \
- ((unsigned long long(*)(PyObject *))_cffi_exports[8])
- #define _cffi_to_c_char \
- ((int(*)(PyObject *))_cffi_exports[9])
- #define _cffi_from_c_pointer \
- ((PyObject *(*)(char *, struct _cffi_ctypedescr *))_cffi_exports[10])
- #define _cffi_to_c_pointer \
- ((char *(*)(PyObject *, struct _cffi_ctypedescr *))_cffi_exports[11])
- #define _cffi_get_struct_layout \
- not used any more
- #define _cffi_restore_errno \
- ((void(*)(void))_cffi_exports[13])
- #define _cffi_save_errno \
- ((void(*)(void))_cffi_exports[14])
- #define _cffi_from_c_char \
- ((PyObject *(*)(char))_cffi_exports[15])
- #define _cffi_from_c_deref \
- ((PyObject *(*)(char *, struct _cffi_ctypedescr *))_cffi_exports[16])
- #define _cffi_to_c \
- ((int(*)(char *, struct _cffi_ctypedescr *, PyObject *))_cffi_exports[17])
- #define _cffi_from_c_struct \
- ((PyObject *(*)(char *, struct _cffi_ctypedescr *))_cffi_exports[18])
- #define _cffi_to_c_wchar_t \
- ((_cffi_wchar_t(*)(PyObject *))_cffi_exports[19])
- #define _cffi_from_c_wchar_t \
- ((PyObject *(*)(_cffi_wchar_t))_cffi_exports[20])
- #define _cffi_to_c_long_double \
- ((long double(*)(PyObject *))_cffi_exports[21])
- #define _cffi_to_c__Bool \
- ((_Bool(*)(PyObject *))_cffi_exports[22])
- #define _cffi_prepare_pointer_call_argument \
- ((Py_ssize_t(*)(struct _cffi_ctypedescr *, \
- PyObject *, char **))_cffi_exports[23])
- #define _cffi_convert_array_from_object \
- ((int(*)(char *, struct _cffi_ctypedescr *, PyObject *))_cffi_exports[24])
- #define _CFFI_CPIDX 25
- #define _cffi_call_python \
- ((void(*)(struct _cffi_externpy_s *, char *))_cffi_exports[_CFFI_CPIDX])
- #define _cffi_to_c_wchar3216_t \
- ((int(*)(PyObject *))_cffi_exports[26])
- #define _cffi_from_c_wchar3216_t \
- ((PyObject *(*)(int))_cffi_exports[27])
- #define _CFFI_NUM_EXPORTS 28
-
- struct _cffi_ctypedescr;
-
- static void *_cffi_exports[_CFFI_NUM_EXPORTS];
-
- #define _cffi_type(index) ( \
- assert((((uintptr_t)_cffi_types[index]) & 1) == 0), \
- (struct _cffi_ctypedescr *)_cffi_types[index])
-
- static PyObject *_cffi_init(const char *module_name, Py_ssize_t version,
- const struct _cffi_type_context_s *ctx)
- {
- PyObject *module, *o_arg, *new_module;
- void *raw[] = {
- (void *)module_name,
- (void *)version,
- (void *)_cffi_exports,
- (void *)ctx,
- };
-
- module = PyImport_ImportModule("_cffi_backend");
- if (module == NULL)
- goto failure;
-
- o_arg = PyLong_FromVoidPtr((void *)raw);
- if (o_arg == NULL)
- goto failure;
-
- new_module = PyObject_CallMethod(
- module, (char *)"_init_cffi_1_0_external_module", (char *)"O", o_arg);
-
- Py_DECREF(o_arg);
- Py_DECREF(module);
- return new_module;
-
- failure:
- Py_XDECREF(module);
- return NULL;
- }
-
-
- #ifdef HAVE_WCHAR_H
- typedef wchar_t _cffi_wchar_t;
- #else
- typedef uint16_t _cffi_wchar_t; /* same random pick as _cffi_backend.c */
- #endif
-
- _CFFI_UNUSED_FN static uint16_t _cffi_to_c_char16_t(PyObject *o)
- {
- if (sizeof(_cffi_wchar_t) == 2)
- return (uint16_t)_cffi_to_c_wchar_t(o);
- else
- return (uint16_t)_cffi_to_c_wchar3216_t(o);
- }
-
- _CFFI_UNUSED_FN static PyObject *_cffi_from_c_char16_t(uint16_t x)
- {
- if (sizeof(_cffi_wchar_t) == 2)
- return _cffi_from_c_wchar_t((_cffi_wchar_t)x);
- else
- return _cffi_from_c_wchar3216_t((int)x);
- }
-
- _CFFI_UNUSED_FN static int _cffi_to_c_char32_t(PyObject *o)
- {
- if (sizeof(_cffi_wchar_t) == 4)
- return (int)_cffi_to_c_wchar_t(o);
- else
- return (int)_cffi_to_c_wchar3216_t(o);
- }
-
- _CFFI_UNUSED_FN static PyObject *_cffi_from_c_char32_t(unsigned int x)
- {
- if (sizeof(_cffi_wchar_t) == 4)
- return _cffi_from_c_wchar_t((_cffi_wchar_t)x);
- else
- return _cffi_from_c_wchar3216_t((int)x);
- }
-
- union _cffi_union_alignment_u {
- unsigned char m_char;
- unsigned short m_short;
- unsigned int m_int;
- unsigned long m_long;
- unsigned long long m_longlong;
- float m_float;
- double m_double;
- long double m_longdouble;
- };
-
- struct _cffi_freeme_s {
- struct _cffi_freeme_s *next;
- union _cffi_union_alignment_u alignment;
- };
-
- _CFFI_UNUSED_FN static int
- _cffi_convert_array_argument(struct _cffi_ctypedescr *ctptr, PyObject *arg,
- char **output_data, Py_ssize_t datasize,
- struct _cffi_freeme_s **freeme)
- {
- char *p;
- if (datasize < 0)
- return -1;
-
- p = *output_data;
- if (p == NULL) {
- struct _cffi_freeme_s *fp = (struct _cffi_freeme_s *)PyObject_Malloc(
- offsetof(struct _cffi_freeme_s, alignment) + (size_t)datasize);
- if (fp == NULL)
- return -1;
- fp->next = *freeme;
- *freeme = fp;
- p = *output_data = (char *)&fp->alignment;
- }
- memset((void *)p, 0, (size_t)datasize);
- return _cffi_convert_array_from_object(p, ctptr, arg);
- }
-
- _CFFI_UNUSED_FN static void
- _cffi_free_array_arguments(struct _cffi_freeme_s *freeme)
- {
- do {
- void *p = (void *)freeme;
- freeme = freeme->next;
- PyObject_Free(p);
- } while (freeme != NULL);
- }
-
- /********** end CPython-specific section **********/
- #else
- _CFFI_UNUSED_FN
- static void (*_cffi_call_python_org)(struct _cffi_externpy_s *, char *);
- # define _cffi_call_python _cffi_call_python_org
- #endif
-
-
- #define _cffi_array_len(array) (sizeof(array) / sizeof((array)[0]))
-
- #define _cffi_prim_int(size, sign) \
- ((size) == 1 ? ((sign) ? _CFFI_PRIM_INT8 : _CFFI_PRIM_UINT8) : \
- (size) == 2 ? ((sign) ? _CFFI_PRIM_INT16 : _CFFI_PRIM_UINT16) : \
- (size) == 4 ? ((sign) ? _CFFI_PRIM_INT32 : _CFFI_PRIM_UINT32) : \
- (size) == 8 ? ((sign) ? _CFFI_PRIM_INT64 : _CFFI_PRIM_UINT64) : \
- _CFFI__UNKNOWN_PRIM)
-
- #define _cffi_prim_float(size) \
- ((size) == sizeof(float) ? _CFFI_PRIM_FLOAT : \
- (size) == sizeof(double) ? _CFFI_PRIM_DOUBLE : \
- (size) == sizeof(long double) ? _CFFI__UNKNOWN_LONG_DOUBLE : \
- _CFFI__UNKNOWN_FLOAT_PRIM)
-
- #define _cffi_check_int(got, got_nonpos, expected) \
- ((got_nonpos) == (expected <= 0) && \
- (got) == (unsigned long long)expected)
-
- #ifdef MS_WIN32
- # define _cffi_stdcall __stdcall
- #else
- # define _cffi_stdcall /* nothing */
- #endif
-
- #ifdef __cplusplus
- }
- #endif
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