diff options
Diffstat (limited to 'src/include/utils/array.h')
| -rw-r--r-- | src/include/utils/array.h | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/src/include/utils/array.h b/src/include/utils/array.h index 4fb296671d7..4d915e0665f 100644 --- a/src/include/utils/array.h +++ b/src/include/utils/array.h @@ -11,7 +11,7 @@ * Portions Copyright (c) 1996-2000, PostgreSQL, Inc * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: array.h,v 1.25 2000/06/13 07:35:30 tgl Exp $ + * $Id: array.h,v 1.26 2000/07/17 03:05:32 tgl Exp $ * * NOTES * XXX the data array should be MAXALIGN'd -- notice that the array @@ -24,16 +24,28 @@ #define ARRAY_H #include "fmgr.h" -#include "utils/memutils.h" +/* + * Arrays are varlena objects, so must meet the varlena convention that + * the first int32 of the object contains the total object size in bytes. + */ typedef struct { - int size; /* total array size (in bytes) */ + int32 size; /* total array size (varlena requirement) */ int ndim; /* # of dimensions */ int flags; /* implementation flags */ } ArrayType; /* + * fmgr macros for array objects + */ +#define DatumGetArrayTypeP(X) ((ArrayType *) PG_DETOAST_DATUM(X)) +#define DatumGetArrayTypePCopy(X) ((ArrayType *) PG_DETOAST_DATUM_COPY(X)) +#define PG_GETARG_ARRAYTYPE_P(n) DatumGetArrayTypeP(PG_GETARG_DATUM(n)) +#define PG_GETARG_ARRAYTYPE_P_COPY(n) DatumGetArrayTypePCopy(PG_GETARG_DATUM(n)) +#define PG_RETURN_ARRAYTYPE_P(x) PG_RETURN_POINTER(x) + +/* * bitmask of ArrayType flags field: * 1st bit - large object flag * 2nd bit - chunk flag (array is chunked if set) @@ -43,11 +55,9 @@ typedef struct #define ARR_CHK_FLAG (0x2) #define ARR_OBJ_MASK (0x1c) -#define ARR_FLAGS(a) ((ArrayType *) a)->flags #define ARR_SIZE(a) (((ArrayType *) a)->size) - #define ARR_NDIM(a) (((ArrayType *) a)->ndim) -#define ARR_NDIM_PTR(a) (&(((ArrayType *) a)->ndim)) +#define ARR_FLAGS(a) (((ArrayType *) a)->flags) #define ARR_IS_LO(a) \ (((ArrayType *) a)->flags & ARR_LOB_FLAG) @@ -102,7 +112,6 @@ typedef struct #define RETURN_NULL(type) do { *isNull = true; return (type) 0; } while (0) #define NAME_LEN 30 -#define MAX_BUFF_SIZE BLCKSZ typedef struct { @@ -134,6 +143,12 @@ extern ArrayType *array_assgn(ArrayType *array, int nSubscripts, bool elmbyval, int elmlen, bool *isNull); extern Datum array_map(FunctionCallInfo fcinfo, Oid inpType, Oid retType); +extern ArrayType *construct_array(Datum *elems, int nelems, + bool elmbyval, int elmlen, char elmalign); +extern void deconstruct_array(ArrayType *array, + bool elmbyval, int elmlen, char elmalign, + Datum **elemsp, int *nelemsp); + extern int _LOtransfer(char **destfd, int size, int nitems, char **srcfd, int isSrcLO, int isDestLO); extern char *_array_newLO(int *fd, int flag); |