text: #ifndef Py_LIMITED_API
  #ifndef DATETIME_H
  #define DATETIME_H
  #include "third_party/python/Include/object.h"
  COSMOPOLITAN_C_START_
  /* clang-format off */
  
  /* Fields are packed into successive bytes, each viewed as unsigned and
   * big-endian, unless otherwise noted:
   *
   * byte offset
   *  0           year     2 bytes, 1-9999
   *  2           month    1 byte, 1-12
   *  3           day      1 byte, 1-31
   *  4           hour     1 byte, 0-23
   *  5           minute   1 byte, 0-59
   *  6           second   1 byte, 0-59
   *  7           usecond  3 bytes, 0-999999
   * 10
   */
  
  /* # of bytes for year, month, and day. */
  #define _PyDateTime_DATE_DATASIZE 4
  
  /* # of bytes for hour, minute, second, and usecond. */
  #define _PyDateTime_TIME_DATASIZE 6
  
  /* # of bytes for year, month, day, hour, minute, second, and usecond. */
  #define _PyDateTime_DATETIME_DATASIZE 10
  
  
  typedef struct
  {
      PyObject_HEAD
      Py_hash_t hashcode;         /* -1 when unknown */
      int days;                   /* -MAX_DELTA_DAYS <= days <= MAX_DELTA_DAYS */
      int seconds;                /* 0 <= seconds < 24*3600 is invariant */
      int microseconds;           /* 0 <= microseconds < 1000000 is invariant */
  } PyDateTime_Delta;
  
  typedef struct
  {
      PyObject_HEAD               /* a pure abstract base class */
  } PyDateTime_TZInfo;
  
  
  /* The datetime and time types have hashcodes, and an optional tzinfo member,
   * present if and only if hastzinfo is true.
   */
  #define _PyTZINFO_HEAD          \
      PyObject_HEAD               \
      Py_hash_t hashcode;         \
      char hastzinfo;             /* boolean flag */
  
  /* No _PyDateTime_BaseTZInfo is allocated; it's just to have something
   * convenient to cast to, when getting at the hastzinfo member of objects
   * starting with _PyTZINFO_HEAD.
   */
  typedef struct
  {
      _PyTZINFO_HEAD
  } _PyDateTime_BaseTZInfo;
  
  /* All time objects are of PyDateTime_TimeType, but that can be allocated
   * in two ways, with or without a tzinfo member.  Without is the same as
   * tzinfo == None, but consumes less memory.  _PyDateTime_BaseTime is an
   * internal struct used to allocate the right amount of space for the
   * "without" case.
   */
  #define _PyDateTime_TIMEHEAD    \
      _PyTZINFO_HEAD              \
      unsigned char data[_PyDateTime_TIME_DATASIZE];
  
  typedef struct
  {
      _PyDateTime_TIMEHEAD
  } _PyDateTime_BaseTime;         /* hastzinfo false */
  
  typedef struct
  {
      _PyDateTime_TIMEHEAD
      unsigned char fold;
      PyObject *tzinfo;
  } PyDateTime_Time;              /* hastzinfo true */
  
  
  /* All datetime objects are of PyDateTime_DateTimeType, but that can be
   * allocated in two ways too, just like for time objects above.  In addition,
   * the plain date type is a base class for datetime, so it must also have
   * a hastzinfo member (although it's unused there).
   */
  typedef struct
  {
      _PyTZINFO_HEAD
      unsigned char data[_PyDateTime_DATE_DATASIZE];
  } PyDateTime_Date;
  
  #define _PyDateTime_DATETIMEHEAD        \
      _PyTZINFO_HEAD                      \
      unsigned char data[_PyDateTime_DATETIME_DATASIZE];
  
  typedef struct
  {
      _PyDateTime_DATETIMEHEAD
  } _PyDateTime_BaseDateTime;     /* hastzinfo false */
  
  typedef struct
  {
      _PyDateTime_DATETIMEHEAD
      unsigned char fold;
      PyObject *tzinfo;
  } PyDateTime_DateTime;          /* hastzinfo true */
  
  
  /* Apply for date and datetime instances. */
  #define PyDateTime_GET_YEAR(o)     ((((PyDateTime_Date*)o)->data[0] << 8) | \
                       ((PyDateTime_Date*)o)->data[1])
  #define PyDateTime_GET_MONTH(o)    (((PyDateTime_Date*)o)->data[2])
  #define PyDateTime_GET_DAY(o)      (((PyDateTime_Date*)o)->data[3])
  
  #define PyDateTime_DATE_GET_HOUR(o)        (((PyDateTime_DateTime*)o)->data[4])
  #define PyDateTime_DATE_GET_MINUTE(o)      (((PyDateTime_DateTime*)o)->data[5])
  #define PyDateTime_DATE_GET_SECOND(o)      (((PyDateTime_DateTime*)o)->data[6])
  #define PyDateTime_DATE_GET_MICROSECOND(o)              \
      ((((PyDateTime_DateTime*)o)->data[7] << 16) |       \
       (((PyDateTime_DateTime*)o)->data[8] << 8)  |       \
        ((PyDateTime_DateTime*)o)->data[9])
  #define PyDateTime_DATE_GET_FOLD(o)        (((PyDateTime_DateTime*)o)->fold)
  
  /* Apply for time instances. */
  #define PyDateTime_TIME_GET_HOUR(o)        (((PyDateTime_Time*)o)->data[0])
  #define PyDateTime_TIME_GET_MINUTE(o)      (((PyDateTime_Time*)o)->data[1])
  #define PyDateTime_TIME_GET_SECOND(o)      (((PyDateTime_Time*)o)->data[2])
  #define PyDateTime_TIME_GET_MICROSECOND(o)              \
      ((((PyDateTime_Time*)o)->data[3] << 16) |           \
       (((PyDateTime_Time*)o)->data[4] << 8)  |           \
        ((PyDateTime_Time*)o)->data[5])
  #define PyDateTime_TIME_GET_FOLD(o)        (((PyDateTime_Time*)o)->fold)
  
  /* Apply for time delta instances */
  #define PyDateTime_DELTA_GET_DAYS(o)         (((PyDateTime_Delta*)o)->days)
  #define PyDateTime_DELTA_GET_SECONDS(o)      (((PyDateTime_Delta*)o)->seconds)
  #define PyDateTime_DELTA_GET_MICROSECONDS(o)            \
      (((PyDateTime_Delta*)o)->microseconds)
  
  
  /* Define structure for C API. */
  typedef struct {
      /* type objects */
      PyTypeObject *DateType;
      PyTypeObject *DateTimeType;
      PyTypeObject *TimeType;
      PyTypeObject *DeltaType;
      PyTypeObject *TZInfoType;
  
      /* constructors */
      PyObject *(*Date_FromDate)(int, int, int, PyTypeObject*);
      PyObject *(*DateTime_FromDateAndTime)(int, int, int, int, int, int, int,
          PyObject*, PyTypeObject*);
      PyObject *(*Time_FromTime)(int, int, int, int, PyObject*, PyTypeObject*);
      PyObject *(*Delta_FromDelta)(int, int, int, int, PyTypeObject*);
  
      /* constructors for the DB API */
      PyObject *(*DateTime_FromTimestamp)(PyObject*, PyObject*, PyObject*);
      PyObject *(*Date_FromTimestamp)(PyObject*, PyObject*);
  
      /* PEP 495 constructors */
      PyObject *(*DateTime_FromDateAndTimeAndFold)(int, int, int, int, int, int, int,
          PyObject*, int, PyTypeObject*);
      PyObject *(*Time_FromTimeAndFold)(int, int, int, int, PyObject*, int, PyTypeObject*);
  
  } PyDateTime_CAPI;
  
  #define PyDateTime_CAPSULE_NAME "datetime.datetime_CAPI"
  
  
  #ifdef Py_BUILD_CORE
  
  /* Macros for type checking when building the Python core. */
  #define PyDate_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateType)
  #define PyDate_CheckExact(op) (Py_TYPE(op) == &PyDateTime_DateType)
  
  #define PyDateTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_DateTimeType)
  #define PyDateTime_CheckExact(op) (Py_TYPE(op) == &PyDateTime_DateTimeType)
  
  #define PyTime_Check(op) PyObject_TypeCheck(op, &PyDateTime_TimeType)
  #define PyTime_CheckExact(op) (Py_TYPE(op) == &PyDateTime_TimeType)
  
  #define PyDelta_Check(op) PyObject_TypeCheck(op, &PyDateTime_DeltaType)
  #define PyDelta_CheckExact(op) (Py_TYPE(op) == &PyDateTime_DeltaType)
  
  #define PyTZInfo_Check(op) PyObject_TypeCheck(op, &PyDateTime_TZInfoType)
  #define PyTZInfo_CheckExact(op) (Py_TYPE(op) == &PyDateTime_TZInfoType)
  
  #else
  
  /* Define global variable for the C API and a macro for setting it. */
  static PyDateTime_CAPI *PyDateTimeAPI = NULL;
  
  #define PyDateTime_IMPORT \
      PyDateTimeAPI = (PyDateTime_CAPI *)PyCapsule_Import(PyDateTime_CAPSULE_NAME, 0)
  
  /* Macros for type checking when not building the Python core. */
  #define PyDate_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->DateType)
  #define PyDate_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->DateType)
  
  #define PyDateTime_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->DateTimeType)
  #define PyDateTime_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->DateTimeType)
  
  #define PyTime_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->TimeType)
  #define PyTime_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->TimeType)
  
  #define PyDelta_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->DeltaType)
  #define PyDelta_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->DeltaType)
  
  #define PyTZInfo_Check(op) PyObject_TypeCheck(op, PyDateTimeAPI->TZInfoType)
  #define PyTZInfo_CheckExact(op) (Py_TYPE(op) == PyDateTimeAPI->TZInfoType)
  
  /* Macros for accessing constructors in a simplified fashion. */
  #define PyDate_FromDate(year, month, day) \
      PyDateTimeAPI->Date_FromDate(year, month, day, PyDateTimeAPI->DateType)
  
  #define PyDateTime_FromDateAndTime(year, month, day, hour, min, sec, usec) \
      PyDateTimeAPI->DateTime_FromDateAndTime(year, month, day, hour, \
          min, sec, usec, Py_None, PyDateTimeAPI->DateTimeType)
  
  #define PyDateTime_FromDateAndTimeAndFold(year, month, day, hour, min, sec, usec, fold) \
      PyDateTimeAPI->DateTime_FromDateAndTimeAndFold(year, month, day, hour, \
          min, sec, usec, Py_None, fold, PyDateTimeAPI->DateTimeType)
  
  #define PyTime_FromTime(hour, minute, second, usecond) \
      PyDateTimeAPI->Time_FromTime(hour, minute, second, usecond, \
          Py_None, PyDateTimeAPI->TimeType)
  
  #define PyTime_FromTimeAndFold(hour, minute, second, usecond, fold) \
      PyDateTimeAPI->Time_FromTimeAndFold(hour, minute, second, usecond, \
          Py_None, fold, PyDateTimeAPI->TimeType)
  
  #define PyDelta_FromDSU(days, seconds, useconds) \
      PyDateTimeAPI->Delta_FromDelta(days, seconds, useconds, 1, \
          PyDateTimeAPI->DeltaType)
  
  /* Macros supporting the DB API. */
  #define PyDateTime_FromTimestamp(args) \
      PyDateTimeAPI->DateTime_FromTimestamp( \
          (PyObject*) (PyDateTimeAPI->DateTimeType), args, NULL)
  
  #define PyDate_FromTimestamp(args) \
      PyDateTimeAPI->Date_FromTimestamp( \
          (PyObject*) (PyDateTimeAPI->DateType), args)
  
  #endif  /* Py_BUILD_CORE */
  
  COSMOPOLITAN_C_END_
  #endif
  #endif /* !Py_LIMITED_API */
  