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array.h
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1 /*-------------------------------------------------------------------------
2  *
3  * array.h
4  * Declarations for Postgres arrays.
5  *
6  * A standard varlena array has the following internal structure:
7  * <vl_len_> - standard varlena header word
8  * <ndim> - number of dimensions of the array
9  * <dataoffset> - offset to stored data, or 0 if no nulls bitmap
10  * <elemtype> - element type OID
11  * <dimensions> - length of each array axis (C array of int)
12  * <lower bnds> - lower boundary of each dimension (C array of int)
13  * <null bitmap> - bitmap showing locations of nulls (OPTIONAL)
14  * <actual data> - whatever is the stored data
15  *
16  * The <dimensions> and <lower bnds> arrays each have ndim elements.
17  *
18  * The <null bitmap> may be omitted if the array contains no NULL elements.
19  * If it is absent, the <dataoffset> field is zero and the offset to the
20  * stored data must be computed on-the-fly. If the bitmap is present,
21  * <dataoffset> is nonzero and is equal to the offset from the array start
22  * to the first data element (including any alignment padding). The bitmap
23  * follows the same conventions as tuple null bitmaps, ie, a 1 indicates
24  * a non-null entry and the LSB of each bitmap byte is used first.
25  *
26  * The actual data starts on a MAXALIGN boundary. Individual items in the
27  * array are aligned as specified by the array element type. They are
28  * stored in row-major order (last subscript varies most rapidly).
29  *
30  * NOTE: it is important that array elements of toastable datatypes NOT be
31  * toasted, since the tupletoaster won't know they are there. (We could
32  * support compressed toasted items; only out-of-line items are dangerous.
33  * However, it seems preferable to store such items uncompressed and allow
34  * the toaster to compress the whole array as one input.)
35  *
36  *
37  * The OIDVECTOR and INT2VECTOR datatypes are storage-compatible with
38  * generic arrays, but they support only one-dimensional arrays with no
39  * nulls (and no null bitmap). They don't support being toasted, either.
40  *
41  * There are also some "fixed-length array" datatypes, such as NAME and
42  * POINT. These are simply a sequence of a fixed number of items each
43  * of a fixed-length datatype, with no overhead; the item size must be
44  * a multiple of its alignment requirement, because we do no padding.
45  * We support subscripting on these types, but array_in() and array_out()
46  * only work with varlena arrays.
47  *
48  * In addition, arrays are a major user of the "expanded object" TOAST
49  * infrastructure. This allows a varlena array to be converted to a
50  * separate representation that may include "deconstructed" Datum/isnull
51  * arrays holding the elements.
52  *
53  *
54  * Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
55  * Portions Copyright (c) 1994, Regents of the University of California
56  *
57  * src/include/utils/array.h
58  *
59  *-------------------------------------------------------------------------
60  */
61 #ifndef ARRAY_H
62 #define ARRAY_H
63 
64 #include "fmgr.h"
65 #include "utils/expandeddatum.h"
66 
67 /* avoid including execnodes.h here */
68 struct ExprState;
69 struct ExprContext;
70 
71 
72 /*
73  * Arrays are varlena objects, so must meet the varlena convention that
74  * the first int32 of the object contains the total object size in bytes.
75  * Be sure to use VARSIZE() and SET_VARSIZE() to access it, though!
76  *
77  * CAUTION: if you change the header for ordinary arrays you will also
78  * need to change the headers for oidvector and int2vector!
79  */
80 typedef struct ArrayType
81 {
82  int32 vl_len_; /* varlena header (do not touch directly!) */
83  int ndim; /* # of dimensions */
84  int32 dataoffset; /* offset to data, or 0 if no bitmap */
85  Oid elemtype; /* element type OID */
86 } ArrayType;
87 
88 /*
89  * An expanded array is contained within a private memory context (as
90  * all expanded objects must be) and has a control structure as below.
91  *
92  * The expanded array might contain a regular "flat" array if that was the
93  * original input and we've not modified it significantly. Otherwise, the
94  * contents are represented by Datum/isnull arrays plus dimensionality and
95  * type information. We could also have both forms, if we've deconstructed
96  * the original array for access purposes but not yet changed it. For pass-
97  * by-reference element types, the Datums would point into the flat array in
98  * this situation. Once we start modifying array elements, new pass-by-ref
99  * elements are separately palloc'd within the memory context.
100  */
101 #define EA_MAGIC 689375833 /* ID for debugging crosschecks */
102 
103 typedef struct ExpandedArrayHeader
104 {
105  /* Standard header for expanded objects */
107 
108  /* Magic value identifying an expanded array (for debugging only) */
109  int ea_magic;
110 
111  /* Dimensionality info (always valid) */
112  int ndims; /* # of dimensions */
113  int *dims; /* array dimensions */
114  int *lbound; /* index lower bounds for each dimension */
115 
116  /* Element type info (always valid) */
117  Oid element_type; /* element type OID */
118  int16 typlen; /* needed info about element datatype */
119  bool typbyval;
120  char typalign;
121 
122  /*
123  * If we have a Datum-array representation of the array, it's kept here;
124  * else dvalues/dnulls are NULL. The dvalues and dnulls arrays are always
125  * palloc'd within the object private context, but may change size from
126  * time to time. For pass-by-ref element types, dvalues entries might
127  * point either into the fstartptr..fendptr area, or to separately
128  * palloc'd chunks. Elements should always be fully detoasted, as they
129  * are in the standard flat representation.
130  *
131  * Even when dvalues is valid, dnulls can be NULL if there are no null
132  * elements.
133  */
134  Datum *dvalues; /* array of Datums */
135  bool *dnulls; /* array of is-null flags for Datums */
136  int dvalueslen; /* allocated length of above arrays */
137  int nelems; /* number of valid entries in above arrays */
138 
139  /*
140  * flat_size is the current space requirement for the flat equivalent of
141  * the expanded array, if known; otherwise it's 0. We store this to make
142  * consecutive calls of get_flat_size cheap.
143  */
145 
146  /*
147  * fvalue points to the flat representation if it is valid, else it is
148  * NULL. If we have or ever had a flat representation then
149  * fstartptr/fendptr point to the start and end+1 of its data area; this
150  * is so that we can tell which Datum pointers point into the flat
151  * representation rather than being pointers to separately palloc'd data.
152  */
153  ArrayType *fvalue; /* must be a fully detoasted array */
154  char *fstartptr; /* start of its data area */
155  char *fendptr; /* end+1 of its data area */
157 
158 /*
159  * Functions that can handle either a "flat" varlena array or an expanded
160  * array use this union to work with their input. Don't refer to "flt";
161  * instead, cast to ArrayType. This struct nominally requires 8-byte
162  * alignment on 64-bit, but it's often used for an ArrayType having 4-byte
163  * alignment. UBSan complains about referencing "flt" in such cases.
164  */
165 typedef union AnyArrayType
166 {
169 } AnyArrayType;
170 
171 /*
172  * working state for accumArrayResult() and friends
173  * note that the input must be scalars (legal array elements)
174  */
175 typedef struct ArrayBuildState
176 {
177  MemoryContext mcontext; /* where all the temp stuff is kept */
178  Datum *dvalues; /* array of accumulated Datums */
179  bool *dnulls; /* array of is-null flags for Datums */
180  int alen; /* allocated length of above arrays */
181  int nelems; /* number of valid entries in above arrays */
182  Oid element_type; /* data type of the Datums */
183  int16 typlen; /* needed info about datatype */
184  bool typbyval;
185  char typalign;
186  bool private_cxt; /* use private memory context */
188 
189 /*
190  * working state for accumArrayResultArr() and friends
191  * note that the input must be arrays, and the same array type is returned
192  */
193 typedef struct ArrayBuildStateArr
194 {
195  MemoryContext mcontext; /* where all the temp stuff is kept */
196  char *data; /* accumulated data */
197  bits8 *nullbitmap; /* bitmap of is-null flags, or NULL if none */
198  int abytes; /* allocated length of "data" */
199  int nbytes; /* number of bytes used so far */
200  int aitems; /* allocated length of bitmap (in elements) */
201  int nitems; /* total number of elements in result */
202  int ndims; /* current dimensions of result */
203  int dims[MAXDIM];
204  int lbs[MAXDIM];
205  Oid array_type; /* data type of the arrays */
206  Oid element_type; /* data type of the array elements */
207  bool private_cxt; /* use private memory context */
209 
210 /*
211  * working state for accumArrayResultAny() and friends
212  * these functions handle both cases
213  */
214 typedef struct ArrayBuildStateAny
215 {
216  /* Exactly one of these is not NULL: */
220 
221 /*
222  * structure to cache type metadata needed for array manipulation
223  */
224 typedef struct ArrayMetaState
225 {
228  bool typbyval;
229  char typalign;
230  char typdelim;
235 
236 /*
237  * private state needed by array_map (here because caller must provide it)
238  */
239 typedef struct ArrayMapState
240 {
243 } ArrayMapState;
244 
245 /* ArrayIteratorData is private in arrayfuncs.c */
247 
248 /* fmgr macros for regular varlena array objects */
249 #define DatumGetArrayTypeP(X) ((ArrayType *) PG_DETOAST_DATUM(X))
250 #define DatumGetArrayTypePCopy(X) ((ArrayType *) PG_DETOAST_DATUM_COPY(X))
251 #define PG_GETARG_ARRAYTYPE_P(n) DatumGetArrayTypeP(PG_GETARG_DATUM(n))
252 #define PG_GETARG_ARRAYTYPE_P_COPY(n) DatumGetArrayTypePCopy(PG_GETARG_DATUM(n))
253 #define PG_RETURN_ARRAYTYPE_P(x) PG_RETURN_POINTER(x)
254 
255 /* fmgr macros for expanded array objects */
256 #define PG_GETARG_EXPANDED_ARRAY(n) DatumGetExpandedArray(PG_GETARG_DATUM(n))
257 #define PG_GETARG_EXPANDED_ARRAYX(n, metacache) \
258  DatumGetExpandedArrayX(PG_GETARG_DATUM(n), metacache)
259 #define PG_RETURN_EXPANDED_ARRAY(x) PG_RETURN_DATUM(EOHPGetRWDatum(&(x)->hdr))
260 
261 /* fmgr macros for AnyArrayType (ie, get either varlena or expanded form) */
262 #define PG_GETARG_ANY_ARRAY_P(n) DatumGetAnyArrayP(PG_GETARG_DATUM(n))
263 
264 /*
265  * Access macros for varlena array header fields.
266  *
267  * ARR_DIMS returns a pointer to an array of array dimensions (number of
268  * elements along the various array axes).
269  *
270  * ARR_LBOUND returns a pointer to an array of array lower bounds.
271  *
272  * That is: if the third axis of an array has elements 5 through 8, then
273  * ARR_DIMS(a)[2] == 4 and ARR_LBOUND(a)[2] == 5.
274  *
275  * Unlike C, the default lower bound is 1.
276  */
277 #define ARR_SIZE(a) VARSIZE(a)
278 #define ARR_NDIM(a) ((a)->ndim)
279 #define ARR_HASNULL(a) ((a)->dataoffset != 0)
280 #define ARR_ELEMTYPE(a) ((a)->elemtype)
281 
282 #define ARR_DIMS(a) \
283  ((int *) (((char *) (a)) + sizeof(ArrayType)))
284 #define ARR_LBOUND(a) \
285  ((int *) (((char *) (a)) + sizeof(ArrayType) + \
286  sizeof(int) * ARR_NDIM(a)))
287 
288 #define ARR_NULLBITMAP(a) \
289  (ARR_HASNULL(a) ? \
290  (bits8 *) (((char *) (a)) + sizeof(ArrayType) + \
291  2 * sizeof(int) * ARR_NDIM(a)) \
292  : (bits8 *) NULL)
293 
294 /*
295  * The total array header size (in bytes) for an array with the specified
296  * number of dimensions and total number of items.
297  */
298 #define ARR_OVERHEAD_NONULLS(ndims) \
299  MAXALIGN(sizeof(ArrayType) + 2 * sizeof(int) * (ndims))
300 #define ARR_OVERHEAD_WITHNULLS(ndims, nitems) \
301  MAXALIGN(sizeof(ArrayType) + 2 * sizeof(int) * (ndims) + \
302  ((nitems) + 7) / 8)
303 
304 #define ARR_DATA_OFFSET(a) \
305  (ARR_HASNULL(a) ? (a)->dataoffset : ARR_OVERHEAD_NONULLS(ARR_NDIM(a)))
306 
307 /*
308  * Returns a pointer to the actual array data.
309  */
310 #define ARR_DATA_PTR(a) \
311  (((char *) (a)) + ARR_DATA_OFFSET(a))
312 
313 /*
314  * Macros for working with AnyArrayType inputs. Beware multiple references!
315  */
316 #define AARR_NDIM(a) \
317  (VARATT_IS_EXPANDED_HEADER(a) ? \
318  (a)->xpn.ndims : ARR_NDIM((ArrayType *) (a)))
319 #define AARR_HASNULL(a) \
320  (VARATT_IS_EXPANDED_HEADER(a) ? \
321  ((a)->xpn.dvalues != NULL ? (a)->xpn.dnulls != NULL : ARR_HASNULL((a)->xpn.fvalue)) : \
322  ARR_HASNULL((ArrayType *) (a)))
323 #define AARR_ELEMTYPE(a) \
324  (VARATT_IS_EXPANDED_HEADER(a) ? \
325  (a)->xpn.element_type : ARR_ELEMTYPE((ArrayType *) (a)))
326 #define AARR_DIMS(a) \
327  (VARATT_IS_EXPANDED_HEADER(a) ? \
328  (a)->xpn.dims : ARR_DIMS((ArrayType *) (a)))
329 #define AARR_LBOUND(a) \
330  (VARATT_IS_EXPANDED_HEADER(a) ? \
331  (a)->xpn.lbound : ARR_LBOUND((ArrayType *) (a)))
332 
333 
334 /*
335  * GUC parameter
336  */
337 extern bool Array_nulls;
338 
339 /*
340  * prototypes for functions defined in arrayfuncs.c
341  */
342 extern void CopyArrayEls(ArrayType *array,
343  Datum *values,
344  bool *nulls,
345  int nitems,
346  int typlen,
347  bool typbyval,
348  char typalign,
349  bool freedata);
350 
351 extern Datum array_get_element(Datum arraydatum, int nSubscripts, int *indx,
352  int arraytyplen, int elmlen, bool elmbyval, char elmalign,
353  bool *isNull);
354 extern Datum array_set_element(Datum arraydatum, int nSubscripts, int *indx,
355  Datum dataValue, bool isNull,
356  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
357 extern Datum array_get_slice(Datum arraydatum, int nSubscripts,
358  int *upperIndx, int *lowerIndx,
359  bool *upperProvided, bool *lowerProvided,
360  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
361 extern Datum array_set_slice(Datum arraydatum, int nSubscripts,
362  int *upperIndx, int *lowerIndx,
363  bool *upperProvided, bool *lowerProvided,
364  Datum srcArrayDatum, bool isNull,
365  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
366 
367 extern Datum array_ref(ArrayType *array, int nSubscripts, int *indx,
368  int arraytyplen, int elmlen, bool elmbyval, char elmalign,
369  bool *isNull);
370 extern ArrayType *array_set(ArrayType *array, int nSubscripts, int *indx,
371  Datum dataValue, bool isNull,
372  int arraytyplen, int elmlen, bool elmbyval, char elmalign);
373 
374 extern Datum array_map(Datum arrayd,
375  struct ExprState *exprstate, struct ExprContext *econtext,
376  Oid retType, ArrayMapState *amstate);
377 
378 extern void array_bitmap_copy(bits8 *destbitmap, int destoffset,
379  const bits8 *srcbitmap, int srcoffset,
380  int nitems);
381 
382 extern ArrayType *construct_array(Datum *elems, int nelems,
383  Oid elmtype,
384  int elmlen, bool elmbyval, char elmalign);
385 extern ArrayType *construct_md_array(Datum *elems,
386  bool *nulls,
387  int ndims,
388  int *dims,
389  int *lbs,
390  Oid elmtype, int elmlen, bool elmbyval, char elmalign);
391 extern ArrayType *construct_empty_array(Oid elmtype);
393  MemoryContext parentcontext,
394  ArrayMetaState *metacache);
395 extern void deconstruct_array(ArrayType *array,
396  Oid elmtype,
397  int elmlen, bool elmbyval, char elmalign,
398  Datum **elemsp, bool **nullsp, int *nelemsp);
399 extern bool array_contains_nulls(ArrayType *array);
400 
401 extern ArrayBuildState *initArrayResult(Oid element_type,
402  MemoryContext rcontext, bool subcontext);
404  Datum dvalue, bool disnull,
405  Oid element_type,
406  MemoryContext rcontext);
407 extern Datum makeArrayResult(ArrayBuildState *astate,
408  MemoryContext rcontext);
409 extern Datum makeMdArrayResult(ArrayBuildState *astate, int ndims,
410  int *dims, int *lbs, MemoryContext rcontext, bool release);
411 
412 extern ArrayBuildStateArr *initArrayResultArr(Oid array_type, Oid element_type,
413  MemoryContext rcontext, bool subcontext);
415  Datum dvalue, bool disnull,
416  Oid array_type,
417  MemoryContext rcontext);
419  MemoryContext rcontext, bool release);
420 
421 extern ArrayBuildStateAny *initArrayResultAny(Oid input_type,
422  MemoryContext rcontext, bool subcontext);
424  Datum dvalue, bool disnull,
425  Oid input_type,
426  MemoryContext rcontext);
428  MemoryContext rcontext, bool release);
429 
430 extern ArrayIterator array_create_iterator(ArrayType *arr, int slice_ndim, ArrayMetaState *mstate);
431 extern bool array_iterate(ArrayIterator iterator, Datum *value, bool *isnull);
432 extern void array_free_iterator(ArrayIterator iterator);
433 
434 /*
435  * prototypes for functions defined in arrayutils.c
436  */
437 
438 extern int ArrayGetOffset(int n, const int *dim, const int *lb, const int *indx);
439 extern int ArrayGetOffset0(int n, const int *tup, const int *scale);
440 extern int ArrayGetNItems(int ndim, const int *dims);
441 extern void mda_get_range(int n, int *span, const int *st, const int *endp);
442 extern void mda_get_prod(int n, const int *range, int *prod);
443 extern void mda_get_offset_values(int n, int *dist, const int *prod, const int *span);
444 extern int mda_next_tuple(int n, int *curr, const int *span);
445 extern int32 *ArrayGetIntegerTypmods(ArrayType *arr, int *n);
446 
447 /*
448  * prototypes for functions defined in array_expanded.c
449  */
450 extern Datum expand_array(Datum arraydatum, MemoryContext parentcontext,
451  ArrayMetaState *metacache);
454  ArrayMetaState *metacache);
457 
458 #endif /* ARRAY_H */
void mda_get_offset_values(int n, int *dist, const int *prod, const int *span)
Definition: arrayutils.c:150
signed short int16
Definition: c.h:346
void CopyArrayEls(ArrayType *array, Datum *values, bool *nulls, int nitems, int typlen, bool typbyval, char typalign, bool freedata)
Definition: arrayfuncs.c:957
Definition: fmgr.h:56
Datum array_get_slice(Datum arraydatum, int nSubscripts, int *upperIndx, int *lowerIndx, bool *upperProvided, bool *lowerProvided, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:2028
ArrayType * construct_empty_array(Oid elmtype)
Definition: arrayfuncs.c:3410
ArrayBuildStateAny * accumArrayResultAny(ArrayBuildStateAny *astate, Datum dvalue, bool disnull, Oid input_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5524
Datum array_set_slice(Datum arraydatum, int nSubscripts, int *upperIndx, int *lowerIndx, bool *upperProvided, bool *lowerProvided, Datum srcArrayDatum, bool isNull, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:2759
#define MAXDIM
Definition: c.h:530
Datum array_map(Datum arrayd, struct ExprState *exprstate, struct ExprContext *econtext, Oid retType, ArrayMapState *amstate)
Definition: arrayfuncs.c:3131
void mda_get_range(int n, int *span, const int *st, const int *endp)
Definition: arrayutils.c:120
Datum * dvalues
Definition: array.h:178
int32 dataoffset
Definition: array.h:84
int mda_next_tuple(int n, int *curr, const int *span)
Definition: arrayutils.c:175
struct ArrayMetaState ArrayMetaState
AnyArrayType * DatumGetAnyArrayP(Datum d)
bool typbyval
Definition: array.h:184
static struct @145 value
ExpandedArrayHeader xpn
Definition: array.h:168
Oid element_type
Definition: array.h:182
bool private_cxt
Definition: array.h:186
int scale
Definition: pgbench.c:153
ArrayBuildState * initArrayResult(Oid element_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5014
bool array_contains_nulls(ArrayType *array)
Definition: arrayfuncs.c:3528
Datum * dvalues
Definition: array.h:134
Datum array_set_element(Datum arraydatum, int nSubscripts, int *indx, Datum dataValue, bool isNull, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:2199
unsigned int Oid
Definition: postgres_ext.h:31
char * fendptr
Definition: array.h:155
ArrayBuildState * scalarstate
Definition: array.h:217
Datum expand_array(Datum arraydatum, MemoryContext parentcontext, ArrayMetaState *metacache)
signed int int32
Definition: c.h:347
Datum makeArrayResultAny(ArrayBuildStateAny *astate, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5552
bool * dnulls
Definition: array.h:179
union AnyArrayType AnyArrayType
bool typbyval
Definition: array.h:228
bits8 * nullbitmap
Definition: array.h:197
ArrayBuildState * accumArrayResult(ArrayBuildState *astate, Datum dvalue, bool disnull, Oid element_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5053
char typalign
Definition: pg_type.h:170
Datum makeArrayResultArr(ArrayBuildStateArr *astate, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5404
ExpandedObjectHeader hdr
Definition: array.h:106
Oid elemtype
Definition: array.h:85
int ArrayGetOffset0(int n, const int *tup, const int *scale)
Definition: arrayutils.c:50
ExpandedArrayHeader * DatumGetExpandedArrayX(Datum d, ArrayMetaState *metacache)
ArrayMetaState inp_extra
Definition: array.h:241
char typalign
Definition: array.h:185
struct ArrayMapState ArrayMapState
int16 typlen
Definition: array.h:227
struct ArrayIteratorData * ArrayIterator
Definition: array.h:246
char typdelim
Definition: array.h:230
ArrayBuildStateArr * initArrayResultArr(Oid array_type, Oid element_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5201
ArrayIterator array_create_iterator(ArrayType *arr, int slice_ndim, ArrayMetaState *mstate)
Definition: arrayfuncs.c:4318
Datum array_ref(ArrayType *array, int nSubscripts, int *indx, int arraytyplen, int elmlen, bool elmbyval, char elmalign, bool *isNull)
Definition: arrayfuncs.c:3076
Datum makeMdArrayResult(ArrayBuildState *astate, int ndims, int *dims, int *lbs, MemoryContext rcontext, bool release)
Definition: arrayfuncs.c:5149
struct ArrayType ArrayType
static struct cvec * range(struct vars *v, chr a, chr b, int cases)
Definition: regc_locale.c:416
int ArrayGetNItems(int ndim, const int *dims)
Definition: arrayutils.c:75
ExpandedArrayHeader * DatumGetExpandedArray(Datum d)
ArrayType * construct_md_array(Datum *elems, bool *nulls, int ndims, int *dims, int *lbs, Oid elmtype, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3326
Datum array_get_element(Datum arraydatum, int nSubscripts, int *indx, int arraytyplen, int elmlen, bool elmbyval, char elmalign, bool *isNull)
Definition: arrayfuncs.c:1819
ArrayType * fvalue
Definition: array.h:153
bool array_iterate(ArrayIterator iterator, Datum *value, bool *isnull)
Definition: arrayfuncs.c:4397
ArrayBuildStateArr * arraystate
Definition: array.h:218
uint8 bits8
Definition: c.h:366
Datum makeArrayResult(ArrayBuildState *astate, MemoryContext rcontext)
Definition: arrayfuncs.c:5117
ArrayBuildStateArr * accumArrayResultArr(ArrayBuildStateArr *astate, Datum dvalue, bool disnull, Oid array_type, MemoryContext rcontext)
Definition: arrayfuncs.c:5247
void array_free_iterator(ArrayIterator iterator)
Definition: arrayfuncs.c:4480
uintptr_t Datum
Definition: postgres.h:367
void mda_get_prod(int n, const int *range, int *prod)
Definition: arrayutils.c:134
struct ExpandedArrayHeader ExpandedArrayHeader
int ArrayGetOffset(int n, const int *dim, const int *lb, const int *indx)
Definition: arrayutils.c:31
ArrayType * construct_array(Datum *elems, int nelems, Oid elmtype, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3291
void array_bitmap_copy(bits8 *destbitmap, int destoffset, const bits8 *srcbitmap, int srcoffset, int nitems)
Definition: arrayfuncs.c:4687
Oid typioparam
Definition: array.h:231
struct ArrayBuildStateAny ArrayBuildStateAny
size_t Size
Definition: c.h:467
ArrayMetaState ret_extra
Definition: array.h:242
struct ArrayBuildStateArr ArrayBuildStateArr
Oid typiofunc
Definition: array.h:232
char typalign
Definition: array.h:229
MemoryContext mcontext
Definition: array.h:177
static Datum values[MAXATTR]
Definition: bootstrap.c:167
int32 * ArrayGetIntegerTypmods(ArrayType *arr, int *n)
Definition: arrayutils.c:200
ArrayType flt
Definition: array.h:167
int32 vl_len_
Definition: array.h:82
FmgrInfo proc
Definition: array.h:233
char * fstartptr
Definition: array.h:154
void deconstruct_array(ArrayType *array, Oid elmtype, int elmlen, bool elmbyval, char elmalign, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3461
bool private_cxt
Definition: array.h:207
Oid element_type
Definition: array.h:226
ArrayType * array_set(ArrayType *array, int nSubscripts, int *indx, Datum dataValue, bool isNull, int arraytyplen, int elmlen, bool elmbyval, char elmalign)
Definition: arrayfuncs.c:3093
int16 typlen
Definition: array.h:183
void deconstruct_expanded_array(ExpandedArrayHeader *eah)
struct ArrayBuildState ArrayBuildState
bool Array_nulls
Definition: arrayfuncs.c:40
MemoryContext mcontext
Definition: array.h:195
int ndim
Definition: array.h:83
ArrayType * arr
Definition: arrayfuncs.c:70
ArrayBuildStateAny * initArrayResultAny(Oid input_type, MemoryContext rcontext, bool subcontext)
Definition: arrayfuncs.c:5479
ExpandedArrayHeader * construct_empty_expanded_array(Oid element_type, MemoryContext parentcontext, ArrayMetaState *metacache)
Definition: arrayfuncs.c:3427