blob: 309a581853ea980003285165b6dbcf666370e68a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*-------------------------------------------------------------------------
*
* date.h
* Definitions for the SQL "date" and "time" types.
*
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/utils/date.h
*
*-------------------------------------------------------------------------
*/
#ifndef DATE_H
#define DATE_H
#include <math.h>
#include "fmgr.h"
typedef int32 DateADT;
typedef int64 TimeADT;
typedef struct
{
TimeADT time; /* all time units other than months and years */
int32 zone; /* numeric time zone, in seconds */
} TimeTzADT;
/*
* Infinity and minus infinity must be the max and min values of DateADT.
*/
#define DATEVAL_NOBEGIN ((DateADT) PG_INT32_MIN)
#define DATEVAL_NOEND ((DateADT) PG_INT32_MAX)
#define DATE_NOBEGIN(j) ((j) = DATEVAL_NOBEGIN)
#define DATE_IS_NOBEGIN(j) ((j) == DATEVAL_NOBEGIN)
#define DATE_NOEND(j) ((j) = DATEVAL_NOEND)
#define DATE_IS_NOEND(j) ((j) == DATEVAL_NOEND)
#define DATE_NOT_FINITE(j) (DATE_IS_NOBEGIN(j) || DATE_IS_NOEND(j))
/*
* Macros for fmgr-callable functions.
*
* For TimeADT, we make use of the same support routines as for int64.
* Therefore TimeADT is pass-by-reference if and only if int64 is!
*/
#define MAX_TIME_PRECISION 6
#define DatumGetDateADT(X) ((DateADT) DatumGetInt32(X))
#define DatumGetTimeADT(X) ((TimeADT) DatumGetInt64(X))
#define DatumGetTimeTzADTP(X) ((TimeTzADT *) DatumGetPointer(X))
#define DateADTGetDatum(X) Int32GetDatum(X)
#define TimeADTGetDatum(X) Int64GetDatum(X)
#define TimeTzADTPGetDatum(X) PointerGetDatum(X)
#define PG_GETARG_DATEADT(n) DatumGetDateADT(PG_GETARG_DATUM(n))
#define PG_GETARG_TIMEADT(n) DatumGetTimeADT(PG_GETARG_DATUM(n))
#define PG_GETARG_TIMETZADT_P(n) DatumGetTimeTzADTP(PG_GETARG_DATUM(n))
#define PG_RETURN_DATEADT(x) return DateADTGetDatum(x)
#define PG_RETURN_TIMEADT(x) return TimeADTGetDatum(x)
#define PG_RETURN_TIMETZADT_P(x) return TimeTzADTPGetDatum(x)
/* date.c */
extern int32 anytime_typmod_check(bool istz, int32 typmod);
extern double date2timestamp_no_overflow(DateADT dateVal);
extern void EncodeSpecialDate(DateADT dt, char *str);
extern DateADT GetSQLCurrentDate(void);
extern TimeTzADT *GetSQLCurrentTime(int32 typmod);
extern TimeADT GetSQLLocalTime(int32 typmod);
#endif /* DATE_H */
|
