#ifndef Py_PYPORT_H
#define Py_PYPORT_H

#include <pyconfig.h> /* angle brackets allow using the one in PC on windows */

#include <inttypes.h>

#include <limits.h>
#ifndef UCHAR_MAX
#  error "limits.h must define UCHAR_MAX"
#endif
#if UCHAR_MAX != 255
#  error "Python's source code assumes C's unsigned char is an 8-bit type"
#endif


// Macro to use C++ static_cast<> in the Python C API.
#ifdef __cplusplus
#  define _Py_STATIC_CAST(type, expr) static_cast<type>(expr)
#else
#  define _Py_STATIC_CAST(type, expr) ((type)(expr))
#endif
// Macro to use the more powerful/dangerous C-style cast even in C++.
#define _Py_CAST(type, expr) ((type)(expr))

// Static inline functions should use _Py_NULL rather than using directly NULL
// to prevent C++ compiler warnings. On C++11 and newer, _Py_NULL is defined as
// nullptr.
#if defined(__cplusplus) && __cplusplus >= 201103
#  define _Py_NULL nullptr
#else
#  define _Py_NULL NULL
#endif


/**************************************************************************
Symbols and macros to supply platform-independent interfaces to basic
C language & library operations whose spellings vary across platforms.

Please try to make documentation here as clear as possible:  by definition,
the stuff here is trying to illuminate C's darkest corners.

Config #defines referenced here:

SIGNED_RIGHT_SHIFT_ZERO_FILLS
Meaning:  To be defined iff i>>j does not extend the sign bit when i is a
          signed integral type and i < 0.
Used in:  Py_ARITHMETIC_RIGHT_SHIFT

Py_DEBUG
Meaning:  Extra checks compiled in for debug mode.
Used in:  Py_SAFE_DOWNCAST

**************************************************************************/

/* typedefs for some C9X-defined synonyms for integral types.
 *
 * The names in Python are exactly the same as the C9X names, except with a
 * Py_ prefix.  Until C9X is universally implemented, this is the only way
 * to ensure that Python gets reliable names that don't conflict with names
 * in non-Python code that are playing their own tricks to define the C9X
 * names.
 *
 * NOTE: don't go nuts here!  Python has no use for *most* of the C9X
 * integral synonyms.  Only define the ones we actually need.
 */

/* long long is required. Ensure HAVE_LONG_LONG is defined for compatibility. */
#ifndef HAVE_LONG_LONG
#define HAVE_LONG_LONG 1
#endif
#ifndef PY_LONG_LONG
#define PY_LONG_LONG long long
/* If LLONG_MAX is defined in limits.h, use that. */
#define PY_LLONG_MIN LLONG_MIN
#define PY_LLONG_MAX LLONG_MAX
#define PY_ULLONG_MAX ULLONG_MAX
#endif

#define PY_UINT32_T uint32_t
#define PY_UINT64_T uint64_t

/* Signed variants of the above */
#define PY_INT32_T int32_t
#define PY_INT64_T int64_t


/* uintptr_t is the C9X name for an unsigned integral type such that a
 * legitimate void* can be cast to uintptr_t and then back to void* again
 * without loss of information.  Similarly for intptr_t, wrt a signed
 * integral type.
 */
typedef uintptr_t       Py_uintptr_t;
typedef intptr_t        Py_intptr_t;

/* CPython does this differently */
#ifdef _WIN64
typedef long long Py_ssize_t;
typedef long long Py_hash_t;
typedef unsigned long long Py_uhash_t;
#else
typedef long Py_ssize_t;
typedef long Py_hash_t;
typedef unsigned long Py_uhash_t;
#endif
#define PY_SSIZE_T_MAX ((Py_ssize_t)(((size_t)-1)>>1))

/* Smallest negative value of type Py_ssize_t. */
#define PY_SSIZE_T_MIN (-PY_SSIZE_T_MAX-1)

/* Py_hash_t is the same size as a pointer. */
#define SIZEOF_PY_HASH_T SIZEOF_SIZE_T
/* Py_uhash_t is the unsigned equivalent needed to calculate numeric hash. */
#define SIZEOF_PY_UHASH_T SIZEOF_SIZE_T

/* Largest possible value of size_t. */
#define PY_SIZE_MAX SIZE_MAX

#include <stdarg.h>

/* Py_LOCAL can be used instead of static to get the fastest possible calling
 * convention for functions that are local to a given module.
 *
 * Py_LOCAL_INLINE does the same thing, and also explicitly requests inlining,
 * for platforms that support that.
 *
 * NOTE: You can only use this for functions that are entirely local to a
 * module; functions that are exported via method tables, callbacks, etc,
 * should keep using static.
 */

#if defined(_MSC_VER)
   /* ignore warnings if the compiler decides not to inline a function */
#  pragma warning(disable: 4710)
   /* fastest possible local call under MSVC */
#  define Py_LOCAL(type) static type __fastcall
#  define Py_LOCAL_INLINE(type) static __inline type __fastcall
#else
#  define Py_LOCAL(type) static type
#  define Py_LOCAL_INLINE(type) static inline type
#endif

// bpo-28126: Py_MEMCPY is kept for backwards compatibility,
#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 < 0x030b0000
#  define Py_MEMCPY memcpy
#endif

#ifdef HAVE_IEEEFP_H
#include <ieeefp.h>  /* needed for 'finite' declaration on some platforms */
#endif

#include <math.h> /* Moved here from the math section, before extern "C" */
/* CPython needs this for the c-extension datetime, which is pure python on PyPy
   downstream packages assume it is here (Pandas for instance) */
#ifndef _MSC_VER
#include <sys/time.h>
#endif
#include <time.h>

/*******************************
 * stat() and fstat() fiddling *
 *******************************/

/* We expect that stat and fstat exist on most systems.
 *  It's confirmed on Unix, Mac and Windows.
 *  If you don't have them, add
 *      #define DONT_HAVE_STAT
 * and/or
 *      #define DONT_HAVE_FSTAT
 * to your pyconfig.h. Python code beyond this should check HAVE_STAT and
 * HAVE_FSTAT instead.
 * Also
 *      #define HAVE_SYS_STAT_H
 * if <sys/stat.h> exists on your platform, and
 *      #define HAVE_STAT_H
 * if <stat.h> does.
 */
#ifndef DONT_HAVE_STAT
#define HAVE_STAT
#endif

#ifndef DONT_HAVE_FSTAT
#define HAVE_FSTAT
#endif

#ifdef RISCOS
#include <sys/types.h>
#include "unixstuff.h"
#endif

#ifdef HAVE_SYS_STAT_H
#if defined(PYOS_OS2) && defined(PYCC_GCC)
#include <sys/types.h>
#endif
#include <sys/stat.h>
#elif defined(HAVE_STAT_H)
#include <stat.h>
#endif

#ifndef S_ISDIR
#define S_ISDIR(x) (((x) & S_IFMT) == S_IFDIR)
#endif

#ifndef S_ISCHR
#define S_ISCHR(x) (((x) & S_IFMT) == S_IFCHR)
#endif

#ifdef __cplusplus
/* Move this down here since some C++ #include's don't like to be included
   inside an extern "C" */
extern "C" {
#endif


/* Py_ARITHMETIC_RIGHT_SHIFT
 * C doesn't define whether a right-shift of a signed integer sign-extends
 * or zero-fills.  Here a macro to force sign extension:
 * Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J)
 *    Return I >> J, forcing sign extension.  Arithmetically, return the
 *    floor of I/2**J.
 * Requirements:
 *    I should have signed integer type.  In the terminology of C99, this can
 *    be either one of the five standard signed integer types (signed char,
 *    short, int, long, long long) or an extended signed integer type.
 *    J is an integer >= 0 and strictly less than the number of bits in the
 *    type of I (because C doesn't define what happens for J outside that
 *    range either).
 *    TYPE used to specify the type of I, but is now ignored.  It's been left
 *    in for backwards compatibility with versions <= 2.6 or 3.0.
 * Caution:
 *    I may be evaluated more than once.
 */
#ifdef SIGNED_RIGHT_SHIFT_ZERO_FILLS
#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) \
    ((I) < 0 ? -1-((-1-(I)) >> (J)) : (I) >> (J))
#else
#define Py_ARITHMETIC_RIGHT_SHIFT(TYPE, I, J) ((I) >> (J))
#endif

/* Py_FORCE_EXPANSION(X)
 * "Simply" returns its argument.  However, macro expansions within the
 * argument are evaluated.  This unfortunate trickery is needed to get
 * token-pasting to work as desired in some cases.
 */
#define Py_FORCE_EXPANSION(X) X

/* Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW)
 * Cast VALUE to type NARROW from type WIDE.  In Py_DEBUG mode, this
 * assert-fails if any information is lost.
 * Caution:
 *    VALUE may be evaluated more than once.
 */
#ifdef Py_DEBUG
#  define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) \
       (assert(_Py_STATIC_CAST(WIDE, _Py_STATIC_CAST(NARROW, (VALUE))) == (VALUE)), \
        _Py_STATIC_CAST(NARROW, (VALUE)))
#else
#  define Py_SAFE_DOWNCAST(VALUE, WIDE, NARROW) _Py_STATIC_CAST(NARROW, (VALUE))
#endif


/* Py_DEPRECATED(version)
 * Declare a variable, type, or function deprecated.
 * The macro must be placed before the declaration.
 * Usage:
 *    Py_DEPRECATED(3.3) extern int old_var;
 *    Py_DEPRECATED(3.4) typedef int T1;
 *    Py_DEPRECATED(3.8) PyAPI_FUNC(int) Py_OldFunction(void);
 */
#if defined(__GNUC__) \
    && ((__GNUC__ >= 4) || (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1))
#define Py_DEPRECATED(VERSION_UNUSED) __attribute__((__deprecated__))
#elif defined(_MSC_VER)
#define Py_DEPRECATED(VERSION) __declspec(deprecated( \
                                          "deprecated in " #VERSION))
#else
#define Py_DEPRECATED(VERSION_UNUSED)
#endif

#if defined(__clang__)
#define _Py_COMP_DIAG_PUSH _Pragma("clang diagnostic push")
#define _Py_COMP_DIAG_IGNORE_DEPR_DECLS \
    _Pragma("clang diagnostic ignored \"-Wdeprecated-declarations\"")
#define _Py_COMP_DIAG_POP _Pragma("clang diagnostic pop")
#elif defined(__GNUC__) \
    && ((__GNUC__ >= 5) || (__GNUC__ == 4) && (__GNUC_MINOR__ >= 6))
#define _Py_COMP_DIAG_PUSH _Pragma("GCC diagnostic push")
#define _Py_COMP_DIAG_IGNORE_DEPR_DECLS \
    _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"")
#define _Py_COMP_DIAG_POP _Pragma("GCC diagnostic pop")
#elif defined(_MSC_VER)
#define _Py_COMP_DIAG_PUSH __pragma(warning(push))
#define _Py_COMP_DIAG_IGNORE_DEPR_DECLS __pragma(warning(disable: 4996))
#define _Py_COMP_DIAG_POP __pragma(warning(pop))
#else
#define _Py_COMP_DIAG_PUSH
#define _Py_COMP_DIAG_IGNORE_DEPR_DECLS
#define _Py_COMP_DIAG_POP
#endif

/* _Py_HOT_FUNCTION
 * The hot attribute on a function is used to inform the compiler that the
 * function is a hot spot of the compiled program. The function is optimized
 * more aggressively and on many target it is placed into special subsection of
 * the text section so all hot functions appears close together improving
 * locality.
 *
 * Usage:
 *    int _Py_HOT_FUNCTION x(void) { return 3; }
 *
 * Issue #28618: This attribute must not be abused, otherwise it can have a
 * negative effect on performance. Only the functions were Python spend most of
 * its time must use it. Use a profiler when running performance benchmark
 * suite to find these functions.
 */
#if defined(__GNUC__) \
    && ((__GNUC__ >= 5) || (__GNUC__ == 4) && (__GNUC_MINOR__ >= 3))
#define _Py_HOT_FUNCTION __attribute__((hot))
#else
#define _Py_HOT_FUNCTION
#endif

// Ask the compiler to always inline a static inline function. The compiler can
// ignore it and decides to not inline the function.
//
// It can be used to inline performance critical static inline functions when
// building Python in debug mode with function inlining disabled. For example,
// MSC disables function inlining when building in debug mode.
//
// Marking blindly a static inline function with Py_ALWAYS_INLINE can result in
// worse performances (due to increased code size for example). The compiler is
// usually smarter than the developer for the cost/benefit analysis.
//
// If Python is built in debug mode (if the Py_DEBUG macro is defined), the
// Py_ALWAYS_INLINE macro does nothing.
//
// It must be specified before the function return type. Usage:
//
//     static inline Py_ALWAYS_INLINE int random(void) { return 4; }
#if defined(Py_DEBUG)
   // If Python is built in debug mode, usually compiler optimizations are
   // disabled. In this case, Py_ALWAYS_INLINE can increase a lot the stack
   // memory usage. For example, forcing inlining using gcc -O0 increases the
   // stack usage from 6 KB to 15 KB per Python function call.
#  define Py_ALWAYS_INLINE
#elif defined(__GNUC__) || defined(__clang__) || defined(__INTEL_COMPILER)
#  define Py_ALWAYS_INLINE __attribute__((always_inline))
#elif defined(_MSC_VER)
#  define Py_ALWAYS_INLINE __forceinline
#else
#  define Py_ALWAYS_INLINE
#endif

// Py_NO_INLINE
// Disable inlining on a function. For example, it reduces the C stack
// consumption: useful on LTO+PGO builds which heavily inline code (see
// bpo-33720).
//
// Usage:
//
//    Py_NO_INLINE static int random(void) { return 4; }
#if defined(__GNUC__) || defined(__clang__) || defined(__INTEL_COMPILER)
#  define Py_NO_INLINE __attribute__ ((noinline))
#elif defined(_MSC_VER)
#  define Py_NO_INLINE __declspec(noinline)
#else
#  define Py_NO_INLINE
#endif

/**************************************************************************
Prototypes that are missing from the standard include files on some systems
(and possibly only some versions of such systems.)

Please be conservative with adding new ones, document them and enclose them
in platform-specific #ifdefs.
**************************************************************************/

#ifdef HAVE__GETPTY
#include <sys/types.h>          /* we need to import mode_t */
extern char * _getpty(int *, int, mode_t, int);
#endif

/* On QNX 6, struct termio must be declared by including sys/termio.h
   if TCGETA, TCSETA, TCSETAW, or TCSETAF are used.  sys/termio.h must
   be included before termios.h or it will generate an error. */
#if defined(HAVE_SYS_TERMIO_H) && !defined(__hpux)
#include <sys/termio.h>
#endif


/* On 4.4BSD-descendants, ctype functions serves the whole range of
 * wchar_t character set rather than single byte code points only.
 * This characteristic can break some operations of string object
 * including str.upper() and str.split() on UTF-8 locales.  This
 * workaround was provided by Tim Robbins of FreeBSD project.
 */

#if defined(__APPLE__)
#  define _PY_PORT_CTYPE_UTF8_ISSUE
#endif

#ifdef _PY_PORT_CTYPE_UTF8_ISSUE
#ifndef __cplusplus
   /* The workaround below is unsafe in C++ because
    * the <locale> defines these symbols as real functions,
    * with a slightly different signature.
    * See issue #10910
    */
#include <ctype.h>
#include <wctype.h>
#undef isalnum
#define isalnum(c) iswalnum(btowc(c))
#undef isalpha
#define isalpha(c) iswalpha(btowc(c))
#undef islower
#define islower(c) iswlower(btowc(c))
#undef isspace
#define isspace(c) iswspace(btowc(c))
#undef isupper
#define isupper(c) iswupper(btowc(c))
#undef tolower
#define tolower(c) towlower(btowc(c))
#undef toupper
#define toupper(c) towupper(btowc(c))
#endif
#endif


/* Declarations for symbol visibility.

  PyAPI_FUNC(type): Declares a public Python API function and return type
  PyAPI_DATA(type): Declares public Python data and its type
  PyMODINIT_FUNC:   A Python module init function.  If these functions are
                    inside the Python core, they are private to the core.
                    If in an extension module, it may be declared with
                    external linkage depending on the platform.

  As a number of platforms support/require "__declspec(dllimport/dllexport)",
  we support a HAVE_DECLSPEC_DLL macro to save duplication.
*/

/*
  All windows ports, except cygwin, are handled in PC/pyconfig.h.

  Cygwin is the only other autoconf platform requiring special
  linkage handling and it uses __declspec().
*/
#if defined(__CYGWIN__)
#       define HAVE_DECLSPEC_DLL
#endif

#include "exports.h"

/* only get special linkage if built as shared or platform is Cygwin */
#if defined(Py_ENABLE_SHARED) || defined(__CYGWIN__)
#       if defined(HAVE_DECLSPEC_DLL)
#               if defined(Py_BUILD_CORE) && !defined(Py_BUILD_CORE_MODULE)
#                       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
#                       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
        /* module init functions inside the core need no external linkage */
        /* except for Cygwin to handle embedding */
#                       if defined(__CYGWIN__)
#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
#                       else /* __CYGWIN__ */
#                               define PyMODINIT_FUNC PyObject*
#                       endif /* __CYGWIN__ */
#               else /* Py_BUILD_CORE */
        /* Building an extension module, or an embedded situation */
        /* public Python functions and data are imported */
        /* Under Cygwin, auto-import functions to prevent compilation */
        /* failures similar to those described at the bottom of 4.1: */
        /* http://docs.python.org/extending/windows.html#a-cookbook-approach */
#                       if !defined(__CYGWIN__)
#                               define PyAPI_FUNC(RTYPE) Py_IMPORTED_SYMBOL RTYPE
#                       endif /* !__CYGWIN__ */
#                       define PyAPI_DATA(RTYPE) extern Py_IMPORTED_SYMBOL RTYPE
        /* module init functions outside the core must be exported */
#                       if defined(__cplusplus)
#                               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
#                       else /* __cplusplus */
#                               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
#                       endif /* __cplusplus */
#               endif /* Py_BUILD_CORE */
#       endif /* HAVE_DECLSPEC_DLL */
#endif /* Py_ENABLE_SHARED */

/* If no external linkage macros defined by now, create defaults */
#ifndef PyAPI_FUNC
#       define PyAPI_FUNC(RTYPE) Py_EXPORTED_SYMBOL RTYPE
#endif
#ifndef PyAPI_DATA
#       define PyAPI_DATA(RTYPE) extern Py_EXPORTED_SYMBOL RTYPE
#endif
#ifndef PyMODINIT_FUNC
#       if defined(__cplusplus)
#               define PyMODINIT_FUNC extern "C" Py_EXPORTED_SYMBOL PyObject*
#       else /* __cplusplus */
#               define PyMODINIT_FUNC Py_EXPORTED_SYMBOL PyObject*
#       endif /* __cplusplus */
#endif

#ifdef __cplusplus
}
#endif

/*
 * Hide GCC attributes from compilers that don't support them.
 */
#if (!defined(__GNUC__) || __GNUC__ < 2 || \
     (__GNUC__ == 2 && __GNUC_MINOR__ < 7) )
#define Py_GCC_ATTRIBUTE(x)
#else
#define Py_GCC_ATTRIBUTE(x) __attribute__(x)
#endif

/*
 * Specify alignment on compilers that support it.
 */
#if defined(__GNUC__) && __GNUC__ >= 3
#define Py_ALIGNED(x) __attribute__((aligned(x)))
#else
#define Py_ALIGNED(x)
#endif

/* Eliminate end-of-loop code not reached warnings from SunPro C
 * when using do{...}while(0) macros
 */
#ifdef __SUNPRO_C
#pragma error_messages (off,E_END_OF_LOOP_CODE_NOT_REACHED)
#endif

#ifndef Py_LL
#define Py_LL(x) x##LL
#endif

#ifndef Py_ULL
#define Py_ULL(x) Py_LL(x##U)
#endif

#define Py_VA_COPY va_copy

/*
 * Convenient macros to deal with endianness of the platform. WORDS_BIGENDIAN is
 * detected by configure and defined in pyconfig.h. The code in pyconfig.h
 * also takes care of Apple's universal builds.
 */

#ifdef WORDS_BIGENDIAN
#  define PY_BIG_ENDIAN 1
#  define PY_LITTLE_ENDIAN 0
#else
#  define PY_BIG_ENDIAN 0
#  define PY_LITTLE_ENDIAN 1
#endif

#ifdef __ANDROID__
   /* The Android langinfo.h header is not used. */
#  undef HAVE_LANGINFO_H
#  undef CODESET
#endif

/* Maximum value of the Windows DWORD type */
#define PY_DWORD_MAX 4294967295U

/* This macro used to tell whether Python was built with multithreading
 * enabled.  Now multithreading is always enabled, but keep the macro
 * for compatibility.
 */
#ifndef WITH_THREAD
#  define WITH_THREAD
#endif

/* Check that ALT_SOABI is consistent with Py_TRACE_REFS:
   ./configure --with-trace-refs should must be used to define Py_TRACE_REFS */
#if defined(ALT_SOABI) && defined(Py_TRACE_REFS)
#  error "Py_TRACE_REFS ABI is not compatible with release and debug ABI"
#endif

#if defined(__ANDROID__) || defined(__VXWORKS__)
   // Use UTF-8 as the locale encoding, ignore the LC_CTYPE locale.
   // See _Py_GetLocaleEncoding(), PyUnicode_DecodeLocale()
   // and PyUnicode_EncodeLocale().
#  define _Py_FORCE_UTF8_LOCALE
#endif

#if defined(_Py_FORCE_UTF8_LOCALE) || defined(__APPLE__)
   // Use UTF-8 as the filesystem encoding.
   // See PyUnicode_DecodeFSDefaultAndSize(), PyUnicode_EncodeFSDefault(),
   // Py_DecodeLocale() and Py_EncodeLocale().
#  define _Py_FORCE_UTF8_FS_ENCODING
#endif

/* Mark a function which cannot return. Example:
   PyAPI_FUNC(void) _Py_NO_RETURN PyThread_exit_thread(void);

   XLC support is intentionally omitted due to bpo-40244 */
#ifndef _Py_NO_RETURN
#if defined(__clang__) || \
    (defined(__GNUC__) && \
     ((__GNUC__ >= 3) || \
      (__GNUC__ == 2) && (__GNUC_MINOR__ >= 5)))
#  define _Py_NO_RETURN __attribute__((__noreturn__))
#elif defined(_MSC_VER)
#  define _Py_NO_RETURN __declspec(noreturn)
#else
#  define _Py_NO_RETURN
#endif
#endif


// Preprocessor check for a builtin preprocessor function. Always return 0
// if __has_builtin() macro is not defined.
//
// __has_builtin() is available on clang and GCC 10.
#ifdef __has_builtin
#  define _Py__has_builtin(x) __has_builtin(x)
#else
#  define _Py__has_builtin(x) 0
#endif


/* A convenient way for code to know if sanitizers are enabled. */
#if defined(__has_feature)
#  if __has_feature(memory_sanitizer)
#    if !defined(_Py_MEMORY_SANITIZER)
#      define _Py_MEMORY_SANITIZER
#    endif
#  endif
#  if __has_feature(address_sanitizer)
#    if !defined(_Py_ADDRESS_SANITIZER)
#      define _Py_ADDRESS_SANITIZER
#    endif
#  endif
#elif defined(__GNUC__)
#  if defined(__SANITIZE_ADDRESS__)
#    define _Py_ADDRESS_SANITIZER
#  endif
#endif

#endif /* Py_PYPORT_H */
