Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * rangetypes.c
4 : * I/O functions, operators, and support functions for range types.
5 : *
6 : * The stored (serialized) format of a range value is:
7 : *
8 : * 4 bytes: varlena header
9 : * 4 bytes: range type's OID
10 : * Lower boundary value, if any, aligned according to subtype's typalign
11 : * Upper boundary value, if any, aligned according to subtype's typalign
12 : * 1 byte for flags
13 : *
14 : * This representation is chosen to avoid needing any padding before the
15 : * lower boundary value, even when it requires double alignment. We can
16 : * expect that the varlena header is presented to us on a suitably aligned
17 : * boundary (possibly after detoasting), and then the lower boundary is too.
18 : * Note that this means we can't work with a packed (short varlena header)
19 : * value; we must detoast it first.
20 : *
21 : *
22 : * Portions Copyright (c) 1996-2025, PostgreSQL Global Development Group
23 : * Portions Copyright (c) 1994, Regents of the University of California
24 : *
25 : *
26 : * IDENTIFICATION
27 : * src/backend/utils/adt/rangetypes.c
28 : *
29 : *-------------------------------------------------------------------------
30 : */
31 : #include "postgres.h"
32 :
33 : #include "common/hashfn.h"
34 : #include "libpq/pqformat.h"
35 : #include "miscadmin.h"
36 : #include "nodes/makefuncs.h"
37 : #include "nodes/miscnodes.h"
38 : #include "nodes/supportnodes.h"
39 : #include "optimizer/clauses.h"
40 : #include "optimizer/cost.h"
41 : #include "optimizer/optimizer.h"
42 : #include "utils/builtins.h"
43 : #include "utils/date.h"
44 : #include "utils/lsyscache.h"
45 : #include "utils/rangetypes.h"
46 : #include "utils/timestamp.h"
47 :
48 :
49 : /* fn_extra cache entry for one of the range I/O functions */
50 : typedef struct RangeIOData
51 : {
52 : TypeCacheEntry *typcache; /* range type's typcache entry */
53 : FmgrInfo typioproc; /* element type's I/O function */
54 : Oid typioparam; /* element type's I/O parameter */
55 : } RangeIOData;
56 :
57 :
58 : static RangeIOData *get_range_io_data(FunctionCallInfo fcinfo, Oid rngtypid,
59 : IOFuncSelector func);
60 : static char range_parse_flags(const char *flags_str);
61 : static bool range_parse(const char *string, char *flags, char **lbound_str,
62 : char **ubound_str, Node *escontext);
63 : static const char *range_parse_bound(const char *string, const char *ptr,
64 : char **bound_str, bool *infinite,
65 : Node *escontext);
66 : static char *range_deparse(char flags, const char *lbound_str,
67 : const char *ubound_str);
68 : static char *range_bound_escape(const char *value);
69 : static Size datum_compute_size(Size data_length, Datum val, bool typbyval,
70 : char typalign, int16 typlen, char typstorage);
71 : static Pointer datum_write(Pointer ptr, Datum datum, bool typbyval,
72 : char typalign, int16 typlen, char typstorage);
73 : static Node *find_simplified_clause(PlannerInfo *root,
74 : Expr *rangeExpr, Expr *elemExpr);
75 : static Expr *build_bound_expr(Expr *elemExpr, Datum val,
76 : bool isLowerBound, bool isInclusive,
77 : TypeCacheEntry *typeCache,
78 : Oid opfamily, Oid rng_collation);
79 :
80 :
81 : /*
82 : *----------------------------------------------------------
83 : * I/O FUNCTIONS
84 : *----------------------------------------------------------
85 : */
86 :
87 : Datum
88 7038 : range_in(PG_FUNCTION_ARGS)
89 : {
90 7038 : char *input_str = PG_GETARG_CSTRING(0);
91 7038 : Oid rngtypoid = PG_GETARG_OID(1);
92 7038 : Oid typmod = PG_GETARG_INT32(2);
93 7038 : Node *escontext = fcinfo->context;
94 : RangeType *range;
95 : RangeIOData *cache;
96 : char flags;
97 : char *lbound_str;
98 : char *ubound_str;
99 : RangeBound lower;
100 : RangeBound upper;
101 :
102 7038 : check_stack_depth(); /* recurses when subtype is a range type */
103 :
104 7038 : cache = get_range_io_data(fcinfo, rngtypoid, IOFunc_input);
105 :
106 : /* parse */
107 7038 : if (!range_parse(input_str, &flags, &lbound_str, &ubound_str, escontext))
108 18 : PG_RETURN_NULL();
109 :
110 : /* call element type's input function */
111 6942 : if (RANGE_HAS_LBOUND(flags))
112 6228 : if (!InputFunctionCallSafe(&cache->typioproc, lbound_str,
113 : cache->typioparam, typmod,
114 : escontext, &lower.val))
115 0 : PG_RETURN_NULL();
116 6942 : if (RANGE_HAS_UBOUND(flags))
117 6126 : if (!InputFunctionCallSafe(&cache->typioproc, ubound_str,
118 : cache->typioparam, typmod,
119 : escontext, &upper.val))
120 24 : PG_RETURN_NULL();
121 :
122 6918 : lower.infinite = (flags & RANGE_LB_INF) != 0;
123 6918 : lower.inclusive = (flags & RANGE_LB_INC) != 0;
124 6918 : lower.lower = true;
125 6918 : upper.infinite = (flags & RANGE_UB_INF) != 0;
126 6918 : upper.inclusive = (flags & RANGE_UB_INC) != 0;
127 6918 : upper.lower = false;
128 :
129 : /* serialize and canonicalize */
130 6918 : range = make_range(cache->typcache, &lower, &upper,
131 6918 : flags & RANGE_EMPTY, escontext);
132 :
133 6900 : PG_RETURN_RANGE_P(range);
134 : }
135 :
136 : Datum
137 107608 : range_out(PG_FUNCTION_ARGS)
138 : {
139 107608 : RangeType *range = PG_GETARG_RANGE_P(0);
140 : char *output_str;
141 : RangeIOData *cache;
142 : char flags;
143 107608 : char *lbound_str = NULL;
144 107608 : char *ubound_str = NULL;
145 : RangeBound lower;
146 : RangeBound upper;
147 : bool empty;
148 :
149 107608 : check_stack_depth(); /* recurses when subtype is a range type */
150 :
151 107608 : cache = get_range_io_data(fcinfo, RangeTypeGetOid(range), IOFunc_output);
152 :
153 : /* deserialize */
154 107608 : range_deserialize(cache->typcache, range, &lower, &upper, &empty);
155 107608 : flags = range_get_flags(range);
156 :
157 : /* call element type's output function */
158 107608 : if (RANGE_HAS_LBOUND(flags))
159 88214 : lbound_str = OutputFunctionCall(&cache->typioproc, lower.val);
160 107608 : if (RANGE_HAS_UBOUND(flags))
161 88076 : ubound_str = OutputFunctionCall(&cache->typioproc, upper.val);
162 :
163 : /* construct result string */
164 107608 : output_str = range_deparse(flags, lbound_str, ubound_str);
165 :
166 107608 : PG_RETURN_CSTRING(output_str);
167 : }
168 :
169 : /*
170 : * Binary representation: The first byte is the flags, then the lower bound
171 : * (if present), then the upper bound (if present). Each bound is represented
172 : * by a 4-byte length header and the binary representation of that bound (as
173 : * returned by a call to the send function for the subtype).
174 : */
175 :
176 : Datum
177 0 : range_recv(PG_FUNCTION_ARGS)
178 : {
179 0 : StringInfo buf = (StringInfo) PG_GETARG_POINTER(0);
180 0 : Oid rngtypoid = PG_GETARG_OID(1);
181 0 : int32 typmod = PG_GETARG_INT32(2);
182 : RangeType *range;
183 : RangeIOData *cache;
184 : char flags;
185 : RangeBound lower;
186 : RangeBound upper;
187 :
188 0 : check_stack_depth(); /* recurses when subtype is a range type */
189 :
190 0 : cache = get_range_io_data(fcinfo, rngtypoid, IOFunc_receive);
191 :
192 : /* receive the flags... */
193 0 : flags = (unsigned char) pq_getmsgbyte(buf);
194 :
195 : /*
196 : * Mask out any unsupported flags, particularly RANGE_xB_NULL which would
197 : * confuse following tests. Note that range_serialize will take care of
198 : * cleaning up any inconsistencies in the remaining flags.
199 : */
200 0 : flags &= (RANGE_EMPTY |
201 : RANGE_LB_INC |
202 : RANGE_LB_INF |
203 : RANGE_UB_INC |
204 : RANGE_UB_INF);
205 :
206 : /* receive the bounds ... */
207 0 : if (RANGE_HAS_LBOUND(flags))
208 : {
209 0 : uint32 bound_len = pq_getmsgint(buf, 4);
210 0 : const char *bound_data = pq_getmsgbytes(buf, bound_len);
211 : StringInfoData bound_buf;
212 :
213 0 : initStringInfo(&bound_buf);
214 0 : appendBinaryStringInfo(&bound_buf, bound_data, bound_len);
215 :
216 0 : lower.val = ReceiveFunctionCall(&cache->typioproc,
217 : &bound_buf,
218 : cache->typioparam,
219 : typmod);
220 0 : pfree(bound_buf.data);
221 : }
222 : else
223 0 : lower.val = (Datum) 0;
224 :
225 0 : if (RANGE_HAS_UBOUND(flags))
226 : {
227 0 : uint32 bound_len = pq_getmsgint(buf, 4);
228 0 : const char *bound_data = pq_getmsgbytes(buf, bound_len);
229 : StringInfoData bound_buf;
230 :
231 0 : initStringInfo(&bound_buf);
232 0 : appendBinaryStringInfo(&bound_buf, bound_data, bound_len);
233 :
234 0 : upper.val = ReceiveFunctionCall(&cache->typioproc,
235 : &bound_buf,
236 : cache->typioparam,
237 : typmod);
238 0 : pfree(bound_buf.data);
239 : }
240 : else
241 0 : upper.val = (Datum) 0;
242 :
243 0 : pq_getmsgend(buf);
244 :
245 : /* finish constructing RangeBound representation */
246 0 : lower.infinite = (flags & RANGE_LB_INF) != 0;
247 0 : lower.inclusive = (flags & RANGE_LB_INC) != 0;
248 0 : lower.lower = true;
249 0 : upper.infinite = (flags & RANGE_UB_INF) != 0;
250 0 : upper.inclusive = (flags & RANGE_UB_INC) != 0;
251 0 : upper.lower = false;
252 :
253 : /* serialize and canonicalize */
254 0 : range = make_range(cache->typcache, &lower, &upper,
255 0 : flags & RANGE_EMPTY, NULL);
256 :
257 0 : PG_RETURN_RANGE_P(range);
258 : }
259 :
260 : Datum
261 0 : range_send(PG_FUNCTION_ARGS)
262 : {
263 0 : RangeType *range = PG_GETARG_RANGE_P(0);
264 0 : StringInfo buf = makeStringInfo();
265 : RangeIOData *cache;
266 : char flags;
267 : RangeBound lower;
268 : RangeBound upper;
269 : bool empty;
270 :
271 0 : check_stack_depth(); /* recurses when subtype is a range type */
272 :
273 0 : cache = get_range_io_data(fcinfo, RangeTypeGetOid(range), IOFunc_send);
274 :
275 : /* deserialize */
276 0 : range_deserialize(cache->typcache, range, &lower, &upper, &empty);
277 0 : flags = range_get_flags(range);
278 :
279 : /* construct output */
280 0 : pq_begintypsend(buf);
281 :
282 0 : pq_sendbyte(buf, flags);
283 :
284 0 : if (RANGE_HAS_LBOUND(flags))
285 : {
286 0 : Datum bound = PointerGetDatum(SendFunctionCall(&cache->typioproc,
287 : lower.val));
288 0 : uint32 bound_len = VARSIZE(bound) - VARHDRSZ;
289 0 : char *bound_data = VARDATA(bound);
290 :
291 0 : pq_sendint32(buf, bound_len);
292 0 : pq_sendbytes(buf, bound_data, bound_len);
293 : }
294 :
295 0 : if (RANGE_HAS_UBOUND(flags))
296 : {
297 0 : Datum bound = PointerGetDatum(SendFunctionCall(&cache->typioproc,
298 : upper.val));
299 0 : uint32 bound_len = VARSIZE(bound) - VARHDRSZ;
300 0 : char *bound_data = VARDATA(bound);
301 :
302 0 : pq_sendint32(buf, bound_len);
303 0 : pq_sendbytes(buf, bound_data, bound_len);
304 : }
305 :
306 0 : PG_RETURN_BYTEA_P(pq_endtypsend(buf));
307 : }
308 :
309 : /*
310 : * get_range_io_data: get cached information needed for range type I/O
311 : *
312 : * The range I/O functions need a bit more cached info than other range
313 : * functions, so they store a RangeIOData struct in fn_extra, not just a
314 : * pointer to a type cache entry.
315 : */
316 : static RangeIOData *
317 114646 : get_range_io_data(FunctionCallInfo fcinfo, Oid rngtypid, IOFuncSelector func)
318 : {
319 114646 : RangeIOData *cache = (RangeIOData *) fcinfo->flinfo->fn_extra;
320 :
321 114646 : if (cache == NULL || cache->typcache->type_id != rngtypid)
322 : {
323 : int16 typlen;
324 : bool typbyval;
325 : char typalign;
326 : char typdelim;
327 : Oid typiofunc;
328 :
329 10406 : cache = (RangeIOData *) MemoryContextAlloc(fcinfo->flinfo->fn_mcxt,
330 : sizeof(RangeIOData));
331 10406 : cache->typcache = lookup_type_cache(rngtypid, TYPECACHE_RANGE_INFO);
332 10406 : if (cache->typcache->rngelemtype == NULL)
333 0 : elog(ERROR, "type %u is not a range type", rngtypid);
334 :
335 : /* get_type_io_data does more than we need, but is convenient */
336 10406 : get_type_io_data(cache->typcache->rngelemtype->type_id,
337 : func,
338 : &typlen,
339 : &typbyval,
340 : &typalign,
341 : &typdelim,
342 : &cache->typioparam,
343 : &typiofunc);
344 :
345 10406 : if (!OidIsValid(typiofunc))
346 : {
347 : /* this could only happen for receive or send */
348 0 : if (func == IOFunc_receive)
349 0 : ereport(ERROR,
350 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
351 : errmsg("no binary input function available for type %s",
352 : format_type_be(cache->typcache->rngelemtype->type_id))));
353 : else
354 0 : ereport(ERROR,
355 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
356 : errmsg("no binary output function available for type %s",
357 : format_type_be(cache->typcache->rngelemtype->type_id))));
358 : }
359 10406 : fmgr_info_cxt(typiofunc, &cache->typioproc,
360 10406 : fcinfo->flinfo->fn_mcxt);
361 :
362 10406 : fcinfo->flinfo->fn_extra = cache;
363 : }
364 :
365 114646 : return cache;
366 : }
367 :
368 :
369 : /*
370 : *----------------------------------------------------------
371 : * GENERIC FUNCTIONS
372 : *----------------------------------------------------------
373 : */
374 :
375 : /* Construct standard-form range value from two arguments */
376 : Datum
377 110076 : range_constructor2(PG_FUNCTION_ARGS)
378 : {
379 110076 : Datum arg1 = PG_GETARG_DATUM(0);
380 110076 : Datum arg2 = PG_GETARG_DATUM(1);
381 110076 : Oid rngtypid = get_fn_expr_rettype(fcinfo->flinfo);
382 : RangeType *range;
383 : TypeCacheEntry *typcache;
384 : RangeBound lower;
385 : RangeBound upper;
386 :
387 110076 : typcache = range_get_typcache(fcinfo, rngtypid);
388 :
389 110076 : lower.val = PG_ARGISNULL(0) ? (Datum) 0 : arg1;
390 110076 : lower.infinite = PG_ARGISNULL(0);
391 110076 : lower.inclusive = true;
392 110076 : lower.lower = true;
393 :
394 110076 : upper.val = PG_ARGISNULL(1) ? (Datum) 0 : arg2;
395 110076 : upper.infinite = PG_ARGISNULL(1);
396 110076 : upper.inclusive = false;
397 110076 : upper.lower = false;
398 :
399 110076 : range = make_range(typcache, &lower, &upper, false, NULL);
400 :
401 110040 : PG_RETURN_RANGE_P(range);
402 : }
403 :
404 : /* Construct general range value from three arguments */
405 : Datum
406 5166 : range_constructor3(PG_FUNCTION_ARGS)
407 : {
408 5166 : Datum arg1 = PG_GETARG_DATUM(0);
409 5166 : Datum arg2 = PG_GETARG_DATUM(1);
410 5166 : Oid rngtypid = get_fn_expr_rettype(fcinfo->flinfo);
411 : RangeType *range;
412 : TypeCacheEntry *typcache;
413 : RangeBound lower;
414 : RangeBound upper;
415 : char flags;
416 :
417 5166 : typcache = range_get_typcache(fcinfo, rngtypid);
418 :
419 5166 : if (PG_ARGISNULL(2))
420 0 : ereport(ERROR,
421 : (errcode(ERRCODE_DATA_EXCEPTION),
422 : errmsg("range constructor flags argument must not be null")));
423 :
424 5166 : flags = range_parse_flags(text_to_cstring(PG_GETARG_TEXT_PP(2)));
425 :
426 5166 : lower.val = PG_ARGISNULL(0) ? (Datum) 0 : arg1;
427 5166 : lower.infinite = PG_ARGISNULL(0);
428 5166 : lower.inclusive = (flags & RANGE_LB_INC) != 0;
429 5166 : lower.lower = true;
430 :
431 5166 : upper.val = PG_ARGISNULL(1) ? (Datum) 0 : arg2;
432 5166 : upper.infinite = PG_ARGISNULL(1);
433 5166 : upper.inclusive = (flags & RANGE_UB_INC) != 0;
434 5166 : upper.lower = false;
435 :
436 5166 : range = make_range(typcache, &lower, &upper, false, NULL);
437 :
438 5166 : PG_RETURN_RANGE_P(range);
439 : }
440 :
441 :
442 : /* range -> subtype functions */
443 :
444 : /* extract lower bound value */
445 : Datum
446 276 : range_lower(PG_FUNCTION_ARGS)
447 : {
448 276 : RangeType *r1 = PG_GETARG_RANGE_P(0);
449 : TypeCacheEntry *typcache;
450 : RangeBound lower;
451 : RangeBound upper;
452 : bool empty;
453 :
454 276 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
455 :
456 276 : range_deserialize(typcache, r1, &lower, &upper, &empty);
457 :
458 : /* Return NULL if there's no finite lower bound */
459 276 : if (empty || lower.infinite)
460 36 : PG_RETURN_NULL();
461 :
462 240 : PG_RETURN_DATUM(lower.val);
463 : }
464 :
465 : /* extract upper bound value */
466 : Datum
467 228 : range_upper(PG_FUNCTION_ARGS)
468 : {
469 228 : RangeType *r1 = PG_GETARG_RANGE_P(0);
470 : TypeCacheEntry *typcache;
471 : RangeBound lower;
472 : RangeBound upper;
473 : bool empty;
474 :
475 228 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
476 :
477 228 : range_deserialize(typcache, r1, &lower, &upper, &empty);
478 :
479 : /* Return NULL if there's no finite upper bound */
480 228 : if (empty || upper.infinite)
481 36 : PG_RETURN_NULL();
482 :
483 192 : PG_RETURN_DATUM(upper.val);
484 : }
485 :
486 :
487 : /* range -> bool functions */
488 :
489 : /* is range empty? */
490 : Datum
491 2196 : range_empty(PG_FUNCTION_ARGS)
492 : {
493 2196 : RangeType *r1 = PG_GETARG_RANGE_P(0);
494 2196 : char flags = range_get_flags(r1);
495 :
496 2196 : PG_RETURN_BOOL(flags & RANGE_EMPTY);
497 : }
498 :
499 : /* is lower bound inclusive? */
500 : Datum
501 72 : range_lower_inc(PG_FUNCTION_ARGS)
502 : {
503 72 : RangeType *r1 = PG_GETARG_RANGE_P(0);
504 72 : char flags = range_get_flags(r1);
505 :
506 72 : PG_RETURN_BOOL(flags & RANGE_LB_INC);
507 : }
508 :
509 : /* is upper bound inclusive? */
510 : Datum
511 72 : range_upper_inc(PG_FUNCTION_ARGS)
512 : {
513 72 : RangeType *r1 = PG_GETARG_RANGE_P(0);
514 72 : char flags = range_get_flags(r1);
515 :
516 72 : PG_RETURN_BOOL(flags & RANGE_UB_INC);
517 : }
518 :
519 : /* is lower bound infinite? */
520 : Datum
521 72 : range_lower_inf(PG_FUNCTION_ARGS)
522 : {
523 72 : RangeType *r1 = PG_GETARG_RANGE_P(0);
524 72 : char flags = range_get_flags(r1);
525 :
526 72 : PG_RETURN_BOOL(flags & RANGE_LB_INF);
527 : }
528 :
529 : /* is upper bound infinite? */
530 : Datum
531 72 : range_upper_inf(PG_FUNCTION_ARGS)
532 : {
533 72 : RangeType *r1 = PG_GETARG_RANGE_P(0);
534 72 : char flags = range_get_flags(r1);
535 :
536 72 : PG_RETURN_BOOL(flags & RANGE_UB_INF);
537 : }
538 :
539 :
540 : /* range, element -> bool functions */
541 :
542 : /* contains? */
543 : Datum
544 76200 : range_contains_elem(PG_FUNCTION_ARGS)
545 : {
546 76200 : RangeType *r = PG_GETARG_RANGE_P(0);
547 76200 : Datum val = PG_GETARG_DATUM(1);
548 : TypeCacheEntry *typcache;
549 :
550 76200 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
551 :
552 76200 : PG_RETURN_BOOL(range_contains_elem_internal(typcache, r, val));
553 : }
554 :
555 : /* contained by? */
556 : Datum
557 84 : elem_contained_by_range(PG_FUNCTION_ARGS)
558 : {
559 84 : Datum val = PG_GETARG_DATUM(0);
560 84 : RangeType *r = PG_GETARG_RANGE_P(1);
561 : TypeCacheEntry *typcache;
562 :
563 84 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
564 :
565 84 : PG_RETURN_BOOL(range_contains_elem_internal(typcache, r, val));
566 : }
567 :
568 :
569 : /* range, range -> bool functions */
570 :
571 : /* equality (internal version) */
572 : bool
573 194598 : range_eq_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
574 : {
575 : RangeBound lower1,
576 : lower2;
577 : RangeBound upper1,
578 : upper2;
579 : bool empty1,
580 : empty2;
581 :
582 : /* Different types should be prevented by ANYRANGE matching rules */
583 194598 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
584 0 : elog(ERROR, "range types do not match");
585 :
586 194598 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
587 194598 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
588 :
589 194598 : if (empty1 && empty2)
590 12462 : return true;
591 182136 : if (empty1 != empty2)
592 13512 : return false;
593 :
594 168624 : if (range_cmp_bounds(typcache, &lower1, &lower2) != 0)
595 79706 : return false;
596 :
597 88918 : if (range_cmp_bounds(typcache, &upper1, &upper2) != 0)
598 50420 : return false;
599 :
600 38498 : return true;
601 : }
602 :
603 : /* equality */
604 : Datum
605 79164 : range_eq(PG_FUNCTION_ARGS)
606 : {
607 79164 : RangeType *r1 = PG_GETARG_RANGE_P(0);
608 79164 : RangeType *r2 = PG_GETARG_RANGE_P(1);
609 : TypeCacheEntry *typcache;
610 :
611 79164 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
612 :
613 79164 : PG_RETURN_BOOL(range_eq_internal(typcache, r1, r2));
614 : }
615 :
616 : /* inequality (internal version) */
617 : bool
618 0 : range_ne_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
619 : {
620 0 : return (!range_eq_internal(typcache, r1, r2));
621 : }
622 :
623 : /* inequality */
624 : Datum
625 0 : range_ne(PG_FUNCTION_ARGS)
626 : {
627 0 : RangeType *r1 = PG_GETARG_RANGE_P(0);
628 0 : RangeType *r2 = PG_GETARG_RANGE_P(1);
629 : TypeCacheEntry *typcache;
630 :
631 0 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
632 :
633 0 : PG_RETURN_BOOL(range_ne_internal(typcache, r1, r2));
634 : }
635 :
636 : /* contains? */
637 : Datum
638 154470 : range_contains(PG_FUNCTION_ARGS)
639 : {
640 154470 : RangeType *r1 = PG_GETARG_RANGE_P(0);
641 154470 : RangeType *r2 = PG_GETARG_RANGE_P(1);
642 : TypeCacheEntry *typcache;
643 :
644 154470 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
645 :
646 154470 : PG_RETURN_BOOL(range_contains_internal(typcache, r1, r2));
647 : }
648 :
649 : /* contained by? */
650 : Datum
651 76932 : range_contained_by(PG_FUNCTION_ARGS)
652 : {
653 76932 : RangeType *r1 = PG_GETARG_RANGE_P(0);
654 76932 : RangeType *r2 = PG_GETARG_RANGE_P(1);
655 : TypeCacheEntry *typcache;
656 :
657 76932 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
658 :
659 76932 : PG_RETURN_BOOL(range_contained_by_internal(typcache, r1, r2));
660 : }
661 :
662 : /* strictly left of? (internal version) */
663 : bool
664 124968 : range_before_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
665 : {
666 : RangeBound lower1,
667 : lower2;
668 : RangeBound upper1,
669 : upper2;
670 : bool empty1,
671 : empty2;
672 :
673 : /* Different types should be prevented by ANYRANGE matching rules */
674 124968 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
675 0 : elog(ERROR, "range types do not match");
676 :
677 124968 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
678 124968 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
679 :
680 : /* An empty range is neither before nor after any other range */
681 124968 : if (empty1 || empty2)
682 14910 : return false;
683 :
684 110058 : return (range_cmp_bounds(typcache, &upper1, &lower2) < 0);
685 : }
686 :
687 : /* strictly left of? */
688 : Datum
689 78918 : range_before(PG_FUNCTION_ARGS)
690 : {
691 78918 : RangeType *r1 = PG_GETARG_RANGE_P(0);
692 78918 : RangeType *r2 = PG_GETARG_RANGE_P(1);
693 : TypeCacheEntry *typcache;
694 :
695 78918 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
696 :
697 78918 : PG_RETURN_BOOL(range_before_internal(typcache, r1, r2));
698 : }
699 :
700 : /* strictly right of? (internal version) */
701 : bool
702 195128 : range_after_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
703 : {
704 : RangeBound lower1,
705 : lower2;
706 : RangeBound upper1,
707 : upper2;
708 : bool empty1,
709 : empty2;
710 :
711 : /* Different types should be prevented by ANYRANGE matching rules */
712 195128 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
713 0 : elog(ERROR, "range types do not match");
714 :
715 195128 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
716 195128 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
717 :
718 : /* An empty range is neither before nor after any other range */
719 195128 : if (empty1 || empty2)
720 14310 : return false;
721 :
722 180818 : return (range_cmp_bounds(typcache, &lower1, &upper2) > 0);
723 : }
724 :
725 : /* strictly right of? */
726 : Datum
727 78306 : range_after(PG_FUNCTION_ARGS)
728 : {
729 78306 : RangeType *r1 = PG_GETARG_RANGE_P(0);
730 78306 : RangeType *r2 = PG_GETARG_RANGE_P(1);
731 : TypeCacheEntry *typcache;
732 :
733 78306 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
734 :
735 78306 : PG_RETURN_BOOL(range_after_internal(typcache, r1, r2));
736 : }
737 :
738 : /*
739 : * Check if two bounds A and B are "adjacent", where A is an upper bound and B
740 : * is a lower bound. For the bounds to be adjacent, each subtype value must
741 : * satisfy strictly one of the bounds: there are no values which satisfy both
742 : * bounds (i.e. less than A and greater than B); and there are no values which
743 : * satisfy neither bound (i.e. greater than A and less than B).
744 : *
745 : * For discrete ranges, we rely on the canonicalization function to see if A..B
746 : * normalizes to empty. (If there is no canonicalization function, it's
747 : * impossible for such a range to normalize to empty, so we needn't bother to
748 : * try.)
749 : *
750 : * If A == B, the ranges are adjacent only if the bounds have different
751 : * inclusive flags (i.e., exactly one of the ranges includes the common
752 : * boundary point).
753 : *
754 : * And if A > B then the ranges are not adjacent in this order.
755 : */
756 : bool
757 476914 : bounds_adjacent(TypeCacheEntry *typcache, RangeBound boundA, RangeBound boundB)
758 : {
759 : int cmp;
760 :
761 : Assert(!boundA.lower && boundB.lower);
762 :
763 476914 : cmp = range_cmp_bound_values(typcache, &boundA, &boundB);
764 476914 : if (cmp < 0)
765 : {
766 : RangeType *r;
767 :
768 : /*
769 : * Bounds do not overlap; see if there are points in between.
770 : */
771 :
772 : /* in a continuous subtype, there are assumed to be points between */
773 147108 : if (!OidIsValid(typcache->rng_canonical_finfo.fn_oid))
774 816 : return false;
775 :
776 : /*
777 : * The bounds are of a discrete range type; so make a range A..B and
778 : * see if it's empty.
779 : */
780 :
781 : /* flip the inclusion flags */
782 146292 : boundA.inclusive = !boundA.inclusive;
783 146292 : boundB.inclusive = !boundB.inclusive;
784 : /* change upper/lower labels to avoid Assert failures */
785 146292 : boundA.lower = true;
786 146292 : boundB.lower = false;
787 146292 : r = make_range(typcache, &boundA, &boundB, false, NULL);
788 146292 : return RangeIsEmpty(r);
789 : }
790 329806 : else if (cmp == 0)
791 1896 : return boundA.inclusive != boundB.inclusive;
792 : else
793 327910 : return false; /* bounds overlap */
794 : }
795 :
796 : /* adjacent to (but not overlapping)? (internal version) */
797 : bool
798 143990 : range_adjacent_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
799 : {
800 : RangeBound lower1,
801 : lower2;
802 : RangeBound upper1,
803 : upper2;
804 : bool empty1,
805 : empty2;
806 :
807 : /* Different types should be prevented by ANYRANGE matching rules */
808 143990 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
809 0 : elog(ERROR, "range types do not match");
810 :
811 143990 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
812 143990 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
813 :
814 : /* An empty range is not adjacent to any other range */
815 143990 : if (empty1 || empty2)
816 12000 : return false;
817 :
818 : /*
819 : * Given two ranges A..B and C..D, the ranges are adjacent if and only if
820 : * B is adjacent to C, or D is adjacent to A.
821 : */
822 262472 : return (bounds_adjacent(typcache, upper1, lower2) ||
823 130482 : bounds_adjacent(typcache, upper2, lower1));
824 : }
825 :
826 : /* adjacent to (but not overlapping)? */
827 : Datum
828 74436 : range_adjacent(PG_FUNCTION_ARGS)
829 : {
830 74436 : RangeType *r1 = PG_GETARG_RANGE_P(0);
831 74436 : RangeType *r2 = PG_GETARG_RANGE_P(1);
832 : TypeCacheEntry *typcache;
833 :
834 74436 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
835 :
836 74436 : PG_RETURN_BOOL(range_adjacent_internal(typcache, r1, r2));
837 : }
838 :
839 : /* overlaps? (internal version) */
840 : bool
841 99196 : range_overlaps_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
842 : {
843 : RangeBound lower1,
844 : lower2;
845 : RangeBound upper1,
846 : upper2;
847 : bool empty1,
848 : empty2;
849 :
850 : /* Different types should be prevented by ANYRANGE matching rules */
851 99196 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
852 0 : elog(ERROR, "range types do not match");
853 :
854 99196 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
855 99196 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
856 :
857 : /* An empty range does not overlap any other range */
858 99196 : if (empty1 || empty2)
859 14104 : return false;
860 :
861 163404 : if (range_cmp_bounds(typcache, &lower1, &lower2) >= 0 &&
862 78312 : range_cmp_bounds(typcache, &lower1, &upper2) <= 0)
863 4718 : return true;
864 :
865 87154 : if (range_cmp_bounds(typcache, &lower2, &lower1) >= 0 &&
866 6780 : range_cmp_bounds(typcache, &lower2, &upper1) <= 0)
867 5976 : return true;
868 :
869 74398 : return false;
870 : }
871 :
872 : /* overlaps? */
873 : Datum
874 77410 : range_overlaps(PG_FUNCTION_ARGS)
875 : {
876 77410 : RangeType *r1 = PG_GETARG_RANGE_P(0);
877 77410 : RangeType *r2 = PG_GETARG_RANGE_P(1);
878 : TypeCacheEntry *typcache;
879 :
880 77410 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
881 :
882 77410 : PG_RETURN_BOOL(range_overlaps_internal(typcache, r1, r2));
883 : }
884 :
885 : /* does not extend to right of? (internal version) */
886 : bool
887 132120 : range_overleft_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
888 : {
889 : RangeBound lower1,
890 : lower2;
891 : RangeBound upper1,
892 : upper2;
893 : bool empty1,
894 : empty2;
895 :
896 : /* Different types should be prevented by ANYRANGE matching rules */
897 132120 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
898 0 : elog(ERROR, "range types do not match");
899 :
900 132120 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
901 132120 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
902 :
903 : /* An empty range is neither before nor after any other range */
904 132120 : if (empty1 || empty2)
905 13146 : return false;
906 :
907 118974 : if (range_cmp_bounds(typcache, &upper1, &upper2) <= 0)
908 40628 : return true;
909 :
910 78346 : return false;
911 : }
912 :
913 : /* does not extend to right of? */
914 : Datum
915 76506 : range_overleft(PG_FUNCTION_ARGS)
916 : {
917 76506 : RangeType *r1 = PG_GETARG_RANGE_P(0);
918 76506 : RangeType *r2 = PG_GETARG_RANGE_P(1);
919 : TypeCacheEntry *typcache;
920 :
921 76506 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
922 :
923 76506 : PG_RETURN_BOOL(range_overleft_internal(typcache, r1, r2));
924 : }
925 :
926 : /* does not extend to left of? (internal version) */
927 : bool
928 218098 : range_overright_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
929 : {
930 : RangeBound lower1,
931 : lower2;
932 : RangeBound upper1,
933 : upper2;
934 : bool empty1,
935 : empty2;
936 :
937 : /* Different types should be prevented by ANYRANGE matching rules */
938 218098 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
939 0 : elog(ERROR, "range types do not match");
940 :
941 218098 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
942 218098 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
943 :
944 : /* An empty range is neither before nor after any other range */
945 218098 : if (empty1 || empty2)
946 13146 : return false;
947 :
948 204952 : if (range_cmp_bounds(typcache, &lower1, &lower2) >= 0)
949 190982 : return true;
950 :
951 13970 : return false;
952 : }
953 :
954 : /* does not extend to left of? */
955 : Datum
956 76500 : range_overright(PG_FUNCTION_ARGS)
957 : {
958 76500 : RangeType *r1 = PG_GETARG_RANGE_P(0);
959 76500 : RangeType *r2 = PG_GETARG_RANGE_P(1);
960 : TypeCacheEntry *typcache;
961 :
962 76500 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
963 :
964 76500 : PG_RETURN_BOOL(range_overright_internal(typcache, r1, r2));
965 : }
966 :
967 :
968 : /* range, range -> range functions */
969 :
970 : /* set difference */
971 : Datum
972 30 : range_minus(PG_FUNCTION_ARGS)
973 : {
974 30 : RangeType *r1 = PG_GETARG_RANGE_P(0);
975 30 : RangeType *r2 = PG_GETARG_RANGE_P(1);
976 : RangeType *ret;
977 : TypeCacheEntry *typcache;
978 :
979 : /* Different types should be prevented by ANYRANGE matching rules */
980 30 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
981 0 : elog(ERROR, "range types do not match");
982 :
983 30 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
984 :
985 30 : ret = range_minus_internal(typcache, r1, r2);
986 30 : if (ret)
987 30 : PG_RETURN_RANGE_P(ret);
988 : else
989 0 : PG_RETURN_NULL();
990 : }
991 :
992 : RangeType *
993 96 : range_minus_internal(TypeCacheEntry *typcache, RangeType *r1, RangeType *r2)
994 : {
995 : RangeBound lower1,
996 : lower2;
997 : RangeBound upper1,
998 : upper2;
999 : bool empty1,
1000 : empty2;
1001 : int cmp_l1l2,
1002 : cmp_l1u2,
1003 : cmp_u1l2,
1004 : cmp_u1u2;
1005 :
1006 96 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
1007 96 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
1008 :
1009 : /* if either is empty, r1 is the correct answer */
1010 96 : if (empty1 || empty2)
1011 0 : return r1;
1012 :
1013 96 : cmp_l1l2 = range_cmp_bounds(typcache, &lower1, &lower2);
1014 96 : cmp_l1u2 = range_cmp_bounds(typcache, &lower1, &upper2);
1015 96 : cmp_u1l2 = range_cmp_bounds(typcache, &upper1, &lower2);
1016 96 : cmp_u1u2 = range_cmp_bounds(typcache, &upper1, &upper2);
1017 :
1018 96 : if (cmp_l1l2 < 0 && cmp_u1u2 > 0)
1019 0 : ereport(ERROR,
1020 : (errcode(ERRCODE_DATA_EXCEPTION),
1021 : errmsg("result of range difference would not be contiguous")));
1022 :
1023 96 : if (cmp_l1u2 > 0 || cmp_u1l2 < 0)
1024 12 : return r1;
1025 :
1026 84 : if (cmp_l1l2 >= 0 && cmp_u1u2 <= 0)
1027 42 : return make_empty_range(typcache);
1028 :
1029 42 : if (cmp_l1l2 <= 0 && cmp_u1l2 >= 0 && cmp_u1u2 <= 0)
1030 : {
1031 24 : lower2.inclusive = !lower2.inclusive;
1032 24 : lower2.lower = false; /* it will become the upper bound */
1033 24 : return make_range(typcache, &lower1, &lower2, false, NULL);
1034 : }
1035 :
1036 18 : if (cmp_l1l2 >= 0 && cmp_u1u2 >= 0 && cmp_l1u2 <= 0)
1037 : {
1038 18 : upper2.inclusive = !upper2.inclusive;
1039 18 : upper2.lower = true; /* it will become the lower bound */
1040 18 : return make_range(typcache, &upper2, &upper1, false, NULL);
1041 : }
1042 :
1043 0 : elog(ERROR, "unexpected case in range_minus");
1044 : return NULL;
1045 : }
1046 :
1047 : /*
1048 : * Set union. If strict is true, it is an error that the two input ranges
1049 : * are not adjacent or overlapping.
1050 : */
1051 : RangeType *
1052 1574 : range_union_internal(TypeCacheEntry *typcache, RangeType *r1, RangeType *r2,
1053 : bool strict)
1054 : {
1055 : RangeBound lower1,
1056 : lower2;
1057 : RangeBound upper1,
1058 : upper2;
1059 : bool empty1,
1060 : empty2;
1061 : RangeBound *result_lower;
1062 : RangeBound *result_upper;
1063 :
1064 : /* Different types should be prevented by ANYRANGE matching rules */
1065 1574 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
1066 0 : elog(ERROR, "range types do not match");
1067 :
1068 1574 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
1069 1574 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
1070 :
1071 : /* if either is empty, the other is the correct answer */
1072 1574 : if (empty1)
1073 6 : return r2;
1074 1568 : if (empty2)
1075 0 : return r1;
1076 :
1077 1568 : if (strict &&
1078 138 : !DatumGetBool(range_overlaps_internal(typcache, r1, r2)) &&
1079 12 : !DatumGetBool(range_adjacent_internal(typcache, r1, r2)))
1080 6 : ereport(ERROR,
1081 : (errcode(ERRCODE_DATA_EXCEPTION),
1082 : errmsg("result of range union would not be contiguous")));
1083 :
1084 1562 : if (range_cmp_bounds(typcache, &lower1, &lower2) < 0)
1085 1526 : result_lower = &lower1;
1086 : else
1087 36 : result_lower = &lower2;
1088 :
1089 1562 : if (range_cmp_bounds(typcache, &upper1, &upper2) > 0)
1090 48 : result_upper = &upper1;
1091 : else
1092 1514 : result_upper = &upper2;
1093 :
1094 1562 : return make_range(typcache, result_lower, result_upper, false, NULL);
1095 : }
1096 :
1097 : Datum
1098 18 : range_union(PG_FUNCTION_ARGS)
1099 : {
1100 18 : RangeType *r1 = PG_GETARG_RANGE_P(0);
1101 18 : RangeType *r2 = PG_GETARG_RANGE_P(1);
1102 : TypeCacheEntry *typcache;
1103 :
1104 18 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
1105 :
1106 18 : PG_RETURN_RANGE_P(range_union_internal(typcache, r1, r2, true));
1107 : }
1108 :
1109 : /*
1110 : * range merge: like set union, except also allow and account for non-adjacent
1111 : * input ranges.
1112 : */
1113 : Datum
1114 30 : range_merge(PG_FUNCTION_ARGS)
1115 : {
1116 30 : RangeType *r1 = PG_GETARG_RANGE_P(0);
1117 30 : RangeType *r2 = PG_GETARG_RANGE_P(1);
1118 : TypeCacheEntry *typcache;
1119 :
1120 30 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
1121 :
1122 30 : PG_RETURN_RANGE_P(range_union_internal(typcache, r1, r2, false));
1123 : }
1124 :
1125 : /* set intersection */
1126 : Datum
1127 22 : range_intersect(PG_FUNCTION_ARGS)
1128 : {
1129 22 : RangeType *r1 = PG_GETARG_RANGE_P(0);
1130 22 : RangeType *r2 = PG_GETARG_RANGE_P(1);
1131 : TypeCacheEntry *typcache;
1132 :
1133 : /* Different types should be prevented by ANYRANGE matching rules */
1134 22 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
1135 0 : elog(ERROR, "range types do not match");
1136 :
1137 22 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
1138 :
1139 22 : PG_RETURN_RANGE_P(range_intersect_internal(typcache, r1, r2));
1140 : }
1141 :
1142 : RangeType *
1143 220 : range_intersect_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
1144 : {
1145 : RangeBound lower1,
1146 : lower2;
1147 : RangeBound upper1,
1148 : upper2;
1149 : bool empty1,
1150 : empty2;
1151 : RangeBound *result_lower;
1152 : RangeBound *result_upper;
1153 :
1154 220 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
1155 220 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
1156 :
1157 220 : if (empty1 || empty2 || !range_overlaps_internal(typcache, r1, r2))
1158 30 : return make_empty_range(typcache);
1159 :
1160 190 : if (range_cmp_bounds(typcache, &lower1, &lower2) >= 0)
1161 92 : result_lower = &lower1;
1162 : else
1163 98 : result_lower = &lower2;
1164 :
1165 190 : if (range_cmp_bounds(typcache, &upper1, &upper2) <= 0)
1166 128 : result_upper = &upper1;
1167 : else
1168 62 : result_upper = &upper2;
1169 :
1170 190 : return make_range(typcache, result_lower, result_upper, false, NULL);
1171 : }
1172 :
1173 : /* range, range -> range, range functions */
1174 :
1175 : /*
1176 : * range_split_internal - if r2 intersects the middle of r1, leaving non-empty
1177 : * ranges on both sides, then return true and set output1 and output2 to the
1178 : * results of r1 - r2 (in order). Otherwise return false and don't set output1
1179 : * or output2. Neither input range should be empty.
1180 : */
1181 : bool
1182 132 : range_split_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2,
1183 : RangeType **output1, RangeType **output2)
1184 : {
1185 : RangeBound lower1,
1186 : lower2;
1187 : RangeBound upper1,
1188 : upper2;
1189 : bool empty1,
1190 : empty2;
1191 :
1192 132 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
1193 132 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
1194 :
1195 210 : if (range_cmp_bounds(typcache, &lower1, &lower2) < 0 &&
1196 78 : range_cmp_bounds(typcache, &upper1, &upper2) > 0)
1197 : {
1198 : /*
1199 : * Need to invert inclusive/exclusive for the lower2 and upper2
1200 : * points. They can't be infinite though. We're allowed to overwrite
1201 : * these RangeBounds since they only exist locally.
1202 : */
1203 18 : lower2.inclusive = !lower2.inclusive;
1204 18 : lower2.lower = false;
1205 18 : upper2.inclusive = !upper2.inclusive;
1206 18 : upper2.lower = true;
1207 :
1208 18 : *output1 = make_range(typcache, &lower1, &lower2, false, NULL);
1209 18 : *output2 = make_range(typcache, &upper2, &upper1, false, NULL);
1210 18 : return true;
1211 : }
1212 :
1213 114 : return false;
1214 : }
1215 :
1216 : /* range -> range aggregate functions */
1217 :
1218 : Datum
1219 42 : range_intersect_agg_transfn(PG_FUNCTION_ARGS)
1220 : {
1221 : MemoryContext aggContext;
1222 : Oid rngtypoid;
1223 : TypeCacheEntry *typcache;
1224 : RangeType *result;
1225 : RangeType *current;
1226 :
1227 42 : if (!AggCheckCallContext(fcinfo, &aggContext))
1228 0 : elog(ERROR, "range_intersect_agg_transfn called in non-aggregate context");
1229 :
1230 42 : rngtypoid = get_fn_expr_argtype(fcinfo->flinfo, 1);
1231 42 : if (!type_is_range(rngtypoid))
1232 0 : elog(ERROR, "range_intersect_agg must be called with a range");
1233 :
1234 42 : typcache = range_get_typcache(fcinfo, rngtypoid);
1235 :
1236 : /* strictness ensures these are non-null */
1237 42 : result = PG_GETARG_RANGE_P(0);
1238 42 : current = PG_GETARG_RANGE_P(1);
1239 :
1240 42 : result = range_intersect_internal(typcache, result, current);
1241 42 : PG_RETURN_RANGE_P(result);
1242 : }
1243 :
1244 :
1245 : /* Btree support */
1246 :
1247 : /* btree comparator */
1248 : Datum
1249 25192 : range_cmp(PG_FUNCTION_ARGS)
1250 : {
1251 25192 : RangeType *r1 = PG_GETARG_RANGE_P(0);
1252 25192 : RangeType *r2 = PG_GETARG_RANGE_P(1);
1253 : TypeCacheEntry *typcache;
1254 : RangeBound lower1,
1255 : lower2;
1256 : RangeBound upper1,
1257 : upper2;
1258 : bool empty1,
1259 : empty2;
1260 : int cmp;
1261 :
1262 25192 : check_stack_depth(); /* recurses when subtype is a range type */
1263 :
1264 : /* Different types should be prevented by ANYRANGE matching rules */
1265 25192 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
1266 0 : elog(ERROR, "range types do not match");
1267 :
1268 25192 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r1));
1269 :
1270 25192 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
1271 25192 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
1272 :
1273 : /* For b-tree use, empty ranges sort before all else */
1274 25192 : if (empty1 && empty2)
1275 2640 : cmp = 0;
1276 22552 : else if (empty1)
1277 3480 : cmp = -1;
1278 19072 : else if (empty2)
1279 2130 : cmp = 1;
1280 : else
1281 : {
1282 16942 : cmp = range_cmp_bounds(typcache, &lower1, &lower2);
1283 16942 : if (cmp == 0)
1284 912 : cmp = range_cmp_bounds(typcache, &upper1, &upper2);
1285 : }
1286 :
1287 25192 : PG_FREE_IF_COPY(r1, 0);
1288 25192 : PG_FREE_IF_COPY(r2, 1);
1289 :
1290 25192 : PG_RETURN_INT32(cmp);
1291 : }
1292 :
1293 : /* inequality operators using the range_cmp function */
1294 : Datum
1295 1338 : range_lt(PG_FUNCTION_ARGS)
1296 : {
1297 1338 : int cmp = range_cmp(fcinfo);
1298 :
1299 1338 : PG_RETURN_BOOL(cmp < 0);
1300 : }
1301 :
1302 : Datum
1303 3012 : range_le(PG_FUNCTION_ARGS)
1304 : {
1305 3012 : int cmp = range_cmp(fcinfo);
1306 :
1307 3012 : PG_RETURN_BOOL(cmp <= 0);
1308 : }
1309 :
1310 : Datum
1311 3036 : range_ge(PG_FUNCTION_ARGS)
1312 : {
1313 3036 : int cmp = range_cmp(fcinfo);
1314 :
1315 3036 : PG_RETURN_BOOL(cmp >= 0);
1316 : }
1317 :
1318 : Datum
1319 3048 : range_gt(PG_FUNCTION_ARGS)
1320 : {
1321 3048 : int cmp = range_cmp(fcinfo);
1322 :
1323 3048 : PG_RETURN_BOOL(cmp > 0);
1324 : }
1325 :
1326 : /* Hash support */
1327 :
1328 : /* hash a range value */
1329 : Datum
1330 210 : hash_range(PG_FUNCTION_ARGS)
1331 : {
1332 210 : RangeType *r = PG_GETARG_RANGE_P(0);
1333 : uint32 result;
1334 : TypeCacheEntry *typcache;
1335 : TypeCacheEntry *scache;
1336 : RangeBound lower;
1337 : RangeBound upper;
1338 : bool empty;
1339 : char flags;
1340 : uint32 lower_hash;
1341 : uint32 upper_hash;
1342 :
1343 210 : check_stack_depth(); /* recurses when subtype is a range type */
1344 :
1345 210 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
1346 :
1347 : /* deserialize */
1348 210 : range_deserialize(typcache, r, &lower, &upper, &empty);
1349 210 : flags = range_get_flags(r);
1350 :
1351 : /*
1352 : * Look up the element type's hash function, if not done already.
1353 : */
1354 210 : scache = typcache->rngelemtype;
1355 210 : if (!OidIsValid(scache->hash_proc_finfo.fn_oid))
1356 : {
1357 6 : scache = lookup_type_cache(scache->type_id, TYPECACHE_HASH_PROC_FINFO);
1358 6 : if (!OidIsValid(scache->hash_proc_finfo.fn_oid))
1359 0 : ereport(ERROR,
1360 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
1361 : errmsg("could not identify a hash function for type %s",
1362 : format_type_be(scache->type_id))));
1363 : }
1364 :
1365 : /*
1366 : * Apply the hash function to each bound.
1367 : */
1368 210 : if (RANGE_HAS_LBOUND(flags))
1369 144 : lower_hash = DatumGetUInt32(FunctionCall1Coll(&scache->hash_proc_finfo,
1370 : typcache->rng_collation,
1371 : lower.val));
1372 : else
1373 66 : lower_hash = 0;
1374 :
1375 210 : if (RANGE_HAS_UBOUND(flags))
1376 156 : upper_hash = DatumGetUInt32(FunctionCall1Coll(&scache->hash_proc_finfo,
1377 : typcache->rng_collation,
1378 : upper.val));
1379 : else
1380 54 : upper_hash = 0;
1381 :
1382 : /* Merge hashes of flags and bounds */
1383 210 : result = hash_uint32((uint32) flags);
1384 210 : result ^= lower_hash;
1385 210 : result = pg_rotate_left32(result, 1);
1386 210 : result ^= upper_hash;
1387 :
1388 210 : PG_RETURN_INT32(result);
1389 : }
1390 :
1391 : /*
1392 : * Returns 64-bit value by hashing a value to a 64-bit value, with a seed.
1393 : * Otherwise, similar to hash_range.
1394 : */
1395 : Datum
1396 60 : hash_range_extended(PG_FUNCTION_ARGS)
1397 : {
1398 60 : RangeType *r = PG_GETARG_RANGE_P(0);
1399 60 : Datum seed = PG_GETARG_DATUM(1);
1400 : uint64 result;
1401 : TypeCacheEntry *typcache;
1402 : TypeCacheEntry *scache;
1403 : RangeBound lower;
1404 : RangeBound upper;
1405 : bool empty;
1406 : char flags;
1407 : uint64 lower_hash;
1408 : uint64 upper_hash;
1409 :
1410 60 : check_stack_depth();
1411 :
1412 60 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
1413 :
1414 60 : range_deserialize(typcache, r, &lower, &upper, &empty);
1415 60 : flags = range_get_flags(r);
1416 :
1417 60 : scache = typcache->rngelemtype;
1418 60 : if (!OidIsValid(scache->hash_extended_proc_finfo.fn_oid))
1419 : {
1420 0 : scache = lookup_type_cache(scache->type_id,
1421 : TYPECACHE_HASH_EXTENDED_PROC_FINFO);
1422 0 : if (!OidIsValid(scache->hash_extended_proc_finfo.fn_oid))
1423 0 : ereport(ERROR,
1424 : (errcode(ERRCODE_UNDEFINED_FUNCTION),
1425 : errmsg("could not identify a hash function for type %s",
1426 : format_type_be(scache->type_id))));
1427 : }
1428 :
1429 60 : if (RANGE_HAS_LBOUND(flags))
1430 60 : lower_hash = DatumGetUInt64(FunctionCall2Coll(&scache->hash_extended_proc_finfo,
1431 : typcache->rng_collation,
1432 : lower.val,
1433 : seed));
1434 : else
1435 0 : lower_hash = 0;
1436 :
1437 60 : if (RANGE_HAS_UBOUND(flags))
1438 60 : upper_hash = DatumGetUInt64(FunctionCall2Coll(&scache->hash_extended_proc_finfo,
1439 : typcache->rng_collation,
1440 : upper.val,
1441 : seed));
1442 : else
1443 0 : upper_hash = 0;
1444 :
1445 : /* Merge hashes of flags and bounds */
1446 60 : result = DatumGetUInt64(hash_uint32_extended((uint32) flags,
1447 60 : DatumGetInt64(seed)));
1448 60 : result ^= lower_hash;
1449 60 : result = ROTATE_HIGH_AND_LOW_32BITS(result);
1450 60 : result ^= upper_hash;
1451 :
1452 60 : PG_RETURN_UINT64(result);
1453 : }
1454 :
1455 : /*
1456 : *----------------------------------------------------------
1457 : * CANONICAL FUNCTIONS
1458 : *
1459 : * Functions for specific built-in range types.
1460 : *----------------------------------------------------------
1461 : */
1462 :
1463 : Datum
1464 470452 : int4range_canonical(PG_FUNCTION_ARGS)
1465 : {
1466 470452 : RangeType *r = PG_GETARG_RANGE_P(0);
1467 470452 : Node *escontext = fcinfo->context;
1468 : TypeCacheEntry *typcache;
1469 : RangeBound lower;
1470 : RangeBound upper;
1471 : bool empty;
1472 :
1473 470452 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
1474 :
1475 470452 : range_deserialize(typcache, r, &lower, &upper, &empty);
1476 :
1477 470452 : if (empty)
1478 0 : PG_RETURN_RANGE_P(r);
1479 :
1480 470452 : if (!lower.infinite && !lower.inclusive)
1481 : {
1482 3248 : int32 bnd = DatumGetInt32(lower.val);
1483 :
1484 : /* Handle possible overflow manually */
1485 3248 : if (unlikely(bnd == PG_INT32_MAX))
1486 0 : ereturn(escontext, (Datum) 0,
1487 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1488 : errmsg("integer out of range")));
1489 3248 : lower.val = Int32GetDatum(bnd + 1);
1490 3248 : lower.inclusive = true;
1491 : }
1492 :
1493 470452 : if (!upper.infinite && upper.inclusive)
1494 : {
1495 3242 : int32 bnd = DatumGetInt32(upper.val);
1496 :
1497 : /* Handle possible overflow manually */
1498 3242 : if (unlikely(bnd == PG_INT32_MAX))
1499 12 : ereturn(escontext, (Datum) 0,
1500 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1501 : errmsg("integer out of range")));
1502 3230 : upper.val = Int32GetDatum(bnd + 1);
1503 3230 : upper.inclusive = false;
1504 : }
1505 :
1506 470440 : PG_RETURN_RANGE_P(range_serialize(typcache, &lower, &upper,
1507 : false, escontext));
1508 : }
1509 :
1510 : Datum
1511 98 : int8range_canonical(PG_FUNCTION_ARGS)
1512 : {
1513 98 : RangeType *r = PG_GETARG_RANGE_P(0);
1514 98 : Node *escontext = fcinfo->context;
1515 : TypeCacheEntry *typcache;
1516 : RangeBound lower;
1517 : RangeBound upper;
1518 : bool empty;
1519 :
1520 98 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
1521 :
1522 98 : range_deserialize(typcache, r, &lower, &upper, &empty);
1523 :
1524 98 : if (empty)
1525 0 : PG_RETURN_RANGE_P(r);
1526 :
1527 98 : if (!lower.infinite && !lower.inclusive)
1528 : {
1529 18 : int64 bnd = DatumGetInt64(lower.val);
1530 :
1531 : /* Handle possible overflow manually */
1532 18 : if (unlikely(bnd == PG_INT64_MAX))
1533 0 : ereturn(escontext, (Datum) 0,
1534 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1535 : errmsg("bigint out of range")));
1536 18 : lower.val = Int64GetDatum(bnd + 1);
1537 18 : lower.inclusive = true;
1538 : }
1539 :
1540 98 : if (!upper.infinite && upper.inclusive)
1541 : {
1542 24 : int64 bnd = DatumGetInt64(upper.val);
1543 :
1544 : /* Handle possible overflow manually */
1545 24 : if (unlikely(bnd == PG_INT64_MAX))
1546 0 : ereturn(escontext, (Datum) 0,
1547 : (errcode(ERRCODE_NUMERIC_VALUE_OUT_OF_RANGE),
1548 : errmsg("bigint out of range")));
1549 24 : upper.val = Int64GetDatum(bnd + 1);
1550 24 : upper.inclusive = false;
1551 : }
1552 :
1553 98 : PG_RETURN_RANGE_P(range_serialize(typcache, &lower, &upper,
1554 : false, escontext));
1555 : }
1556 :
1557 : Datum
1558 3720 : daterange_canonical(PG_FUNCTION_ARGS)
1559 : {
1560 3720 : RangeType *r = PG_GETARG_RANGE_P(0);
1561 3720 : Node *escontext = fcinfo->context;
1562 : TypeCacheEntry *typcache;
1563 : RangeBound lower;
1564 : RangeBound upper;
1565 : bool empty;
1566 :
1567 3720 : typcache = range_get_typcache(fcinfo, RangeTypeGetOid(r));
1568 :
1569 3720 : range_deserialize(typcache, r, &lower, &upper, &empty);
1570 :
1571 3720 : if (empty)
1572 0 : PG_RETURN_RANGE_P(r);
1573 :
1574 3720 : if (!lower.infinite && !DATE_NOT_FINITE(DatumGetDateADT(lower.val)) &&
1575 3672 : !lower.inclusive)
1576 : {
1577 36 : DateADT bnd = DatumGetDateADT(lower.val);
1578 :
1579 : /* Check for overflow -- note we already eliminated PG_INT32_MAX */
1580 36 : bnd++;
1581 36 : if (unlikely(!IS_VALID_DATE(bnd)))
1582 0 : ereturn(escontext, (Datum) 0,
1583 : (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
1584 : errmsg("date out of range")));
1585 36 : lower.val = DateADTGetDatum(bnd);
1586 36 : lower.inclusive = true;
1587 : }
1588 :
1589 3720 : if (!upper.infinite && !DATE_NOT_FINITE(DatumGetDateADT(upper.val)) &&
1590 3546 : upper.inclusive)
1591 : {
1592 36 : DateADT bnd = DatumGetDateADT(upper.val);
1593 :
1594 : /* Check for overflow -- note we already eliminated PG_INT32_MAX */
1595 36 : bnd++;
1596 36 : if (unlikely(!IS_VALID_DATE(bnd)))
1597 12 : ereturn(escontext, (Datum) 0,
1598 : (errcode(ERRCODE_DATETIME_VALUE_OUT_OF_RANGE),
1599 : errmsg("date out of range")));
1600 24 : upper.val = DateADTGetDatum(bnd);
1601 24 : upper.inclusive = false;
1602 : }
1603 :
1604 3708 : PG_RETURN_RANGE_P(range_serialize(typcache, &lower, &upper,
1605 : false, escontext));
1606 : }
1607 :
1608 : /*
1609 : *----------------------------------------------------------
1610 : * SUBTYPE_DIFF FUNCTIONS
1611 : *
1612 : * Functions for specific built-in range types.
1613 : *
1614 : * Note that subtype_diff does return the difference, not the absolute value
1615 : * of the difference, and it must take care to avoid overflow.
1616 : * (numrange_subdiff is at some risk there ...)
1617 : *----------------------------------------------------------
1618 : */
1619 :
1620 : Datum
1621 1204256 : int4range_subdiff(PG_FUNCTION_ARGS)
1622 : {
1623 1204256 : int32 v1 = PG_GETARG_INT32(0);
1624 1204256 : int32 v2 = PG_GETARG_INT32(1);
1625 :
1626 1204256 : PG_RETURN_FLOAT8((float8) v1 - (float8) v2);
1627 : }
1628 :
1629 : Datum
1630 0 : int8range_subdiff(PG_FUNCTION_ARGS)
1631 : {
1632 0 : int64 v1 = PG_GETARG_INT64(0);
1633 0 : int64 v2 = PG_GETARG_INT64(1);
1634 :
1635 0 : PG_RETURN_FLOAT8((float8) v1 - (float8) v2);
1636 : }
1637 :
1638 : Datum
1639 246 : numrange_subdiff(PG_FUNCTION_ARGS)
1640 : {
1641 246 : Datum v1 = PG_GETARG_DATUM(0);
1642 246 : Datum v2 = PG_GETARG_DATUM(1);
1643 : Datum numresult;
1644 : float8 floatresult;
1645 :
1646 246 : numresult = DirectFunctionCall2(numeric_sub, v1, v2);
1647 :
1648 246 : floatresult = DatumGetFloat8(DirectFunctionCall1(numeric_float8,
1649 : numresult));
1650 :
1651 246 : PG_RETURN_FLOAT8(floatresult);
1652 : }
1653 :
1654 : Datum
1655 0 : daterange_subdiff(PG_FUNCTION_ARGS)
1656 : {
1657 0 : int32 v1 = PG_GETARG_INT32(0);
1658 0 : int32 v2 = PG_GETARG_INT32(1);
1659 :
1660 0 : PG_RETURN_FLOAT8((float8) v1 - (float8) v2);
1661 : }
1662 :
1663 : Datum
1664 0 : tsrange_subdiff(PG_FUNCTION_ARGS)
1665 : {
1666 0 : Timestamp v1 = PG_GETARG_TIMESTAMP(0);
1667 0 : Timestamp v2 = PG_GETARG_TIMESTAMP(1);
1668 : float8 result;
1669 :
1670 0 : result = ((float8) v1 - (float8) v2) / USECS_PER_SEC;
1671 0 : PG_RETURN_FLOAT8(result);
1672 : }
1673 :
1674 : Datum
1675 0 : tstzrange_subdiff(PG_FUNCTION_ARGS)
1676 : {
1677 0 : Timestamp v1 = PG_GETARG_TIMESTAMP(0);
1678 0 : Timestamp v2 = PG_GETARG_TIMESTAMP(1);
1679 : float8 result;
1680 :
1681 0 : result = ((float8) v1 - (float8) v2) / USECS_PER_SEC;
1682 0 : PG_RETURN_FLOAT8(result);
1683 : }
1684 :
1685 : /*
1686 : *----------------------------------------------------------
1687 : * SUPPORT FUNCTIONS
1688 : *
1689 : * These functions aren't in pg_proc, but are useful for
1690 : * defining new generic range functions in C.
1691 : *----------------------------------------------------------
1692 : */
1693 :
1694 : /*
1695 : * range_get_typcache: get cached information about a range type
1696 : *
1697 : * This is for use by range-related functions that follow the convention
1698 : * of using the fn_extra field as a pointer to the type cache entry for
1699 : * the range type. Functions that need to cache more information than
1700 : * that must fend for themselves.
1701 : */
1702 : TypeCacheEntry *
1703 4757892 : range_get_typcache(FunctionCallInfo fcinfo, Oid rngtypid)
1704 : {
1705 4757892 : TypeCacheEntry *typcache = (TypeCacheEntry *) fcinfo->flinfo->fn_extra;
1706 :
1707 4757892 : if (typcache == NULL ||
1708 4738106 : typcache->type_id != rngtypid)
1709 : {
1710 19786 : typcache = lookup_type_cache(rngtypid, TYPECACHE_RANGE_INFO);
1711 19786 : if (typcache->rngelemtype == NULL)
1712 0 : elog(ERROR, "type %u is not a range type", rngtypid);
1713 19786 : fcinfo->flinfo->fn_extra = typcache;
1714 : }
1715 :
1716 4757892 : return typcache;
1717 : }
1718 :
1719 : /*
1720 : * range_serialize: construct a range value from bounds and empty-flag
1721 : *
1722 : * This does not force canonicalization of the range value. In most cases,
1723 : * external callers should only be canonicalization functions. Note that
1724 : * we perform some datatype-independent canonicalization checks anyway.
1725 : */
1726 : RangeType *
1727 960226 : range_serialize(TypeCacheEntry *typcache, RangeBound *lower, RangeBound *upper,
1728 : bool empty, struct Node *escontext)
1729 : {
1730 : RangeType *range;
1731 : int cmp;
1732 : Size msize;
1733 : Pointer ptr;
1734 : int16 typlen;
1735 : bool typbyval;
1736 : char typalign;
1737 : char typstorage;
1738 960226 : char flags = 0;
1739 :
1740 : /*
1741 : * Verify range is not invalid on its face, and construct flags value,
1742 : * preventing any non-canonical combinations such as infinite+inclusive.
1743 : */
1744 : Assert(lower->lower);
1745 : Assert(!upper->lower);
1746 :
1747 960226 : if (empty)
1748 3750 : flags |= RANGE_EMPTY;
1749 : else
1750 : {
1751 956476 : cmp = range_cmp_bound_values(typcache, lower, upper);
1752 :
1753 : /* error check: if lower bound value is above upper, it's wrong */
1754 956476 : if (cmp > 0)
1755 66 : ereturn(escontext, NULL,
1756 : (errcode(ERRCODE_DATA_EXCEPTION),
1757 : errmsg("range lower bound must be less than or equal to range upper bound")));
1758 :
1759 : /* if bounds are equal, and not both inclusive, range is empty */
1760 956410 : if (cmp == 0 && !(lower->inclusive && upper->inclusive))
1761 384 : flags |= RANGE_EMPTY;
1762 : else
1763 : {
1764 : /* infinite boundaries are never inclusive */
1765 956026 : if (lower->infinite)
1766 10814 : flags |= RANGE_LB_INF;
1767 945212 : else if (lower->inclusive)
1768 941580 : flags |= RANGE_LB_INC;
1769 956026 : if (upper->infinite)
1770 7036 : flags |= RANGE_UB_INF;
1771 948990 : else if (upper->inclusive)
1772 4076 : flags |= RANGE_UB_INC;
1773 : }
1774 : }
1775 :
1776 : /* Fetch information about range's element type */
1777 960160 : typlen = typcache->rngelemtype->typlen;
1778 960160 : typbyval = typcache->rngelemtype->typbyval;
1779 960160 : typalign = typcache->rngelemtype->typalign;
1780 960160 : typstorage = typcache->rngelemtype->typstorage;
1781 :
1782 : /* Count space for varlena header and range type's OID */
1783 960160 : msize = sizeof(RangeType);
1784 : Assert(msize == MAXALIGN(msize));
1785 :
1786 : /* Count space for bounds */
1787 960160 : if (RANGE_HAS_LBOUND(flags))
1788 : {
1789 : /*
1790 : * Make sure item to be inserted is not toasted. It is essential that
1791 : * we not insert an out-of-line toast value pointer into a range
1792 : * object, for the same reasons that arrays and records can't contain
1793 : * them. It would work to store a compressed-in-line value, but we
1794 : * prefer to decompress and then let compression be applied to the
1795 : * whole range object if necessary. But, unlike arrays, we do allow
1796 : * short-header varlena objects to stay as-is.
1797 : */
1798 945212 : if (typlen == -1)
1799 4746 : lower->val = PointerGetDatum(PG_DETOAST_DATUM_PACKED(lower->val));
1800 :
1801 945212 : msize = datum_compute_size(msize, lower->val, typbyval, typalign,
1802 : typlen, typstorage);
1803 : }
1804 :
1805 960160 : if (RANGE_HAS_UBOUND(flags))
1806 : {
1807 : /* Make sure item to be inserted is not toasted */
1808 948990 : if (typlen == -1)
1809 4710 : upper->val = PointerGetDatum(PG_DETOAST_DATUM_PACKED(upper->val));
1810 :
1811 948990 : msize = datum_compute_size(msize, upper->val, typbyval, typalign,
1812 : typlen, typstorage);
1813 : }
1814 :
1815 : /* Add space for flag byte */
1816 960160 : msize += sizeof(char);
1817 :
1818 : /* Note: zero-fill is required here, just as in heap tuples */
1819 960160 : range = (RangeType *) palloc0(msize);
1820 960160 : SET_VARSIZE(range, msize);
1821 :
1822 : /* Now fill in the datum */
1823 960160 : range->rangetypid = typcache->type_id;
1824 :
1825 960160 : ptr = (char *) (range + 1);
1826 :
1827 960160 : if (RANGE_HAS_LBOUND(flags))
1828 : {
1829 : Assert(lower->lower);
1830 945212 : ptr = datum_write(ptr, lower->val, typbyval, typalign, typlen,
1831 : typstorage);
1832 : }
1833 :
1834 960160 : if (RANGE_HAS_UBOUND(flags))
1835 : {
1836 : Assert(!upper->lower);
1837 948990 : ptr = datum_write(ptr, upper->val, typbyval, typalign, typlen,
1838 : typstorage);
1839 : }
1840 :
1841 960160 : *((char *) ptr) = flags;
1842 :
1843 960160 : return range;
1844 : }
1845 :
1846 : /*
1847 : * range_deserialize: deconstruct a range value
1848 : *
1849 : * NB: the given range object must be fully detoasted; it cannot have a
1850 : * short varlena header.
1851 : *
1852 : * Note that if the element type is pass-by-reference, the datums in the
1853 : * RangeBound structs will be pointers into the given range object.
1854 : */
1855 : void
1856 9683858 : range_deserialize(TypeCacheEntry *typcache, const RangeType *range,
1857 : RangeBound *lower, RangeBound *upper, bool *empty)
1858 : {
1859 : char flags;
1860 : int16 typlen;
1861 : bool typbyval;
1862 : char typalign;
1863 : Pointer ptr;
1864 : Datum lbound;
1865 : Datum ubound;
1866 :
1867 : /* assert caller passed the right typcache entry */
1868 : Assert(RangeTypeGetOid(range) == typcache->type_id);
1869 :
1870 : /* fetch the flag byte from datum's last byte */
1871 9683858 : flags = *((const char *) range + VARSIZE(range) - 1);
1872 :
1873 : /* fetch information about range's element type */
1874 9683858 : typlen = typcache->rngelemtype->typlen;
1875 9683858 : typbyval = typcache->rngelemtype->typbyval;
1876 9683858 : typalign = typcache->rngelemtype->typalign;
1877 :
1878 : /* initialize data pointer just after the range OID */
1879 9683858 : ptr = (Pointer) (range + 1);
1880 :
1881 : /* fetch lower bound, if any */
1882 9683858 : if (RANGE_HAS_LBOUND(flags))
1883 : {
1884 : /* att_align_pointer cannot be necessary here */
1885 8575372 : lbound = fetch_att(ptr, typbyval, typlen);
1886 8575372 : ptr = (Pointer) att_addlength_pointer(ptr, typlen, ptr);
1887 : }
1888 : else
1889 1108486 : lbound = (Datum) 0;
1890 :
1891 : /* fetch upper bound, if any */
1892 9683858 : if (RANGE_HAS_UBOUND(flags))
1893 : {
1894 8588854 : ptr = (Pointer) att_align_pointer(ptr, typalign, typlen, ptr);
1895 8588854 : ubound = fetch_att(ptr, typbyval, typlen);
1896 : /* no need for att_addlength_pointer */
1897 : }
1898 : else
1899 1095004 : ubound = (Datum) 0;
1900 :
1901 : /* emit results */
1902 :
1903 9683858 : *empty = (flags & RANGE_EMPTY) != 0;
1904 :
1905 9683858 : lower->val = lbound;
1906 9683858 : lower->infinite = (flags & RANGE_LB_INF) != 0;
1907 9683858 : lower->inclusive = (flags & RANGE_LB_INC) != 0;
1908 9683858 : lower->lower = true;
1909 :
1910 9683858 : upper->val = ubound;
1911 9683858 : upper->infinite = (flags & RANGE_UB_INF) != 0;
1912 9683858 : upper->inclusive = (flags & RANGE_UB_INC) != 0;
1913 9683858 : upper->lower = false;
1914 9683858 : }
1915 :
1916 : /*
1917 : * range_get_flags: just get the flags from a RangeType value.
1918 : *
1919 : * This is frequently useful in places that only need the flags and not
1920 : * the full results of range_deserialize.
1921 : */
1922 : char
1923 2979144 : range_get_flags(const RangeType *range)
1924 : {
1925 : /* fetch the flag byte from datum's last byte */
1926 2979144 : return *((char *) range + VARSIZE(range) - 1);
1927 : }
1928 :
1929 : /*
1930 : * range_set_contain_empty: set the RANGE_CONTAIN_EMPTY bit in the value.
1931 : *
1932 : * This is only needed in GiST operations, so we don't include a provision
1933 : * for setting it in range_serialize; rather, this function must be applied
1934 : * afterwards.
1935 : */
1936 : void
1937 18 : range_set_contain_empty(RangeType *range)
1938 : {
1939 : char *flagsp;
1940 :
1941 : /* flag byte is datum's last byte */
1942 18 : flagsp = (char *) range + VARSIZE(range) - 1;
1943 :
1944 18 : *flagsp |= RANGE_CONTAIN_EMPTY;
1945 18 : }
1946 :
1947 : /*
1948 : * This both serializes and canonicalizes (if applicable) the range.
1949 : * This should be used by most callers.
1950 : */
1951 : RangeType *
1952 483662 : make_range(TypeCacheEntry *typcache, RangeBound *lower, RangeBound *upper,
1953 : bool empty, struct Node *escontext)
1954 : {
1955 : RangeType *range;
1956 :
1957 483662 : range = range_serialize(typcache, lower, upper, empty, escontext);
1958 :
1959 483608 : if (SOFT_ERROR_OCCURRED(escontext))
1960 12 : return NULL;
1961 :
1962 : /* no need to call canonical on empty ranges ... */
1963 483596 : if (OidIsValid(typcache->rng_canonical_finfo.fn_oid) &&
1964 477990 : !RangeIsEmpty(range))
1965 : {
1966 : /* Do this the hard way so that we can pass escontext */
1967 474270 : LOCAL_FCINFO(fcinfo, 1);
1968 : Datum result;
1969 :
1970 474270 : InitFunctionCallInfoData(*fcinfo, &typcache->rng_canonical_finfo, 1,
1971 : InvalidOid, escontext, NULL);
1972 :
1973 474270 : fcinfo->args[0].value = RangeTypePGetDatum(range);
1974 474270 : fcinfo->args[0].isnull = false;
1975 :
1976 474270 : result = FunctionCallInvoke(fcinfo);
1977 :
1978 474270 : if (SOFT_ERROR_OCCURRED(escontext))
1979 24 : return NULL;
1980 :
1981 : /* Should not get a null result if there was no error */
1982 474246 : if (fcinfo->isnull)
1983 0 : elog(ERROR, "function %u returned NULL",
1984 : typcache->rng_canonical_finfo.fn_oid);
1985 :
1986 474246 : range = DatumGetRangeTypeP(result);
1987 : }
1988 :
1989 483572 : return range;
1990 : }
1991 :
1992 : /*
1993 : * Compare two range boundary points, returning <0, 0, or >0 according to
1994 : * whether b1 is less than, equal to, or greater than b2.
1995 : *
1996 : * The boundaries can be any combination of upper and lower; so it's useful
1997 : * for a variety of operators.
1998 : *
1999 : * The simple case is when b1 and b2 are both finite and inclusive, in which
2000 : * case the result is just a comparison of the values held in b1 and b2.
2001 : *
2002 : * If a bound is exclusive, then we need to know whether it's a lower bound,
2003 : * in which case we treat the boundary point as "just greater than" the held
2004 : * value; or an upper bound, in which case we treat the boundary point as
2005 : * "just less than" the held value.
2006 : *
2007 : * If a bound is infinite, it represents minus infinity (less than every other
2008 : * point) if it's a lower bound; or plus infinity (greater than every other
2009 : * point) if it's an upper bound.
2010 : *
2011 : * There is only one case where two boundaries compare equal but are not
2012 : * identical: when both bounds are inclusive and hold the same finite value,
2013 : * but one is an upper bound and the other a lower bound.
2014 : */
2015 : int
2016 11575770 : range_cmp_bounds(TypeCacheEntry *typcache, const RangeBound *b1, const RangeBound *b2)
2017 : {
2018 : int32 result;
2019 :
2020 : /*
2021 : * First, handle cases involving infinity, which don't require invoking
2022 : * the comparison proc.
2023 : */
2024 11575770 : if (b1->infinite && b2->infinite)
2025 : {
2026 : /*
2027 : * Both are infinity, so they are equal unless one is lower and the
2028 : * other not.
2029 : */
2030 15878 : if (b1->lower == b2->lower)
2031 15788 : return 0;
2032 : else
2033 90 : return b1->lower ? -1 : 1;
2034 : }
2035 11559892 : else if (b1->infinite)
2036 91686 : return b1->lower ? -1 : 1;
2037 11468206 : else if (b2->infinite)
2038 27860 : return b2->lower ? 1 : -1;
2039 :
2040 : /*
2041 : * Both boundaries are finite, so compare the held values.
2042 : */
2043 11440346 : result = DatumGetInt32(FunctionCall2Coll(&typcache->rng_cmp_proc_finfo,
2044 : typcache->rng_collation,
2045 : b1->val, b2->val));
2046 :
2047 : /*
2048 : * If the comparison is anything other than equal, we're done. If they
2049 : * compare equal though, we still have to consider whether the boundaries
2050 : * are inclusive or exclusive.
2051 : */
2052 11440346 : if (result == 0)
2053 : {
2054 690232 : if (!b1->inclusive && !b2->inclusive)
2055 : {
2056 : /* both are exclusive */
2057 307414 : if (b1->lower == b2->lower)
2058 307408 : return 0;
2059 : else
2060 6 : return b1->lower ? 1 : -1;
2061 : }
2062 382818 : else if (!b1->inclusive)
2063 864 : return b1->lower ? 1 : -1;
2064 381954 : else if (!b2->inclusive)
2065 1310 : return b2->lower ? -1 : 1;
2066 : else
2067 : {
2068 : /*
2069 : * Both are inclusive and the values held are equal, so they are
2070 : * equal regardless of whether they are upper or lower boundaries,
2071 : * or a mix.
2072 : */
2073 380644 : return 0;
2074 : }
2075 : }
2076 :
2077 10750114 : return result;
2078 : }
2079 :
2080 : /*
2081 : * Compare two range boundary point values, returning <0, 0, or >0 according
2082 : * to whether b1 is less than, equal to, or greater than b2.
2083 : *
2084 : * This is similar to but simpler than range_cmp_bounds(). We just compare
2085 : * the values held in b1 and b2, ignoring inclusive/exclusive flags. The
2086 : * lower/upper flags only matter for infinities, where they tell us if the
2087 : * infinity is plus or minus.
2088 : */
2089 : int
2090 1433390 : range_cmp_bound_values(TypeCacheEntry *typcache, const RangeBound *b1,
2091 : const RangeBound *b2)
2092 : {
2093 : /*
2094 : * First, handle cases involving infinity, which don't require invoking
2095 : * the comparison proc.
2096 : */
2097 1433390 : if (b1->infinite && b2->infinite)
2098 : {
2099 : /*
2100 : * Both are infinity, so they are equal unless one is lower and the
2101 : * other not.
2102 : */
2103 314 : if (b1->lower == b2->lower)
2104 0 : return 0;
2105 : else
2106 314 : return b1->lower ? -1 : 1;
2107 : }
2108 1433076 : else if (b1->infinite)
2109 17280 : return b1->lower ? -1 : 1;
2110 1415796 : else if (b2->infinite)
2111 14090 : return b2->lower ? 1 : -1;
2112 :
2113 : /*
2114 : * Both boundaries are finite, so compare the held values.
2115 : */
2116 1401706 : return DatumGetInt32(FunctionCall2Coll(&typcache->rng_cmp_proc_finfo,
2117 : typcache->rng_collation,
2118 : b1->val, b2->val));
2119 : }
2120 :
2121 : /*
2122 : * qsort callback for sorting ranges.
2123 : *
2124 : * Two empty ranges compare equal; an empty range sorts to the left of any
2125 : * non-empty range. Two non-empty ranges are sorted by lower bound first
2126 : * and by upper bound next.
2127 : */
2128 : int
2129 26912 : range_compare(const void *key1, const void *key2, void *arg)
2130 : {
2131 26912 : RangeType *r1 = *(RangeType **) key1;
2132 26912 : RangeType *r2 = *(RangeType **) key2;
2133 26912 : TypeCacheEntry *typcache = (TypeCacheEntry *) arg;
2134 : RangeBound lower1;
2135 : RangeBound upper1;
2136 : RangeBound lower2;
2137 : RangeBound upper2;
2138 : bool empty1;
2139 : bool empty2;
2140 : int cmp;
2141 :
2142 26912 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
2143 26912 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
2144 :
2145 26912 : if (empty1 && empty2)
2146 48 : cmp = 0;
2147 26864 : else if (empty1)
2148 42 : cmp = -1;
2149 26822 : else if (empty2)
2150 12 : cmp = 1;
2151 : else
2152 : {
2153 26810 : cmp = range_cmp_bounds(typcache, &lower1, &lower2);
2154 26810 : if (cmp == 0)
2155 48 : cmp = range_cmp_bounds(typcache, &upper1, &upper2);
2156 : }
2157 :
2158 26912 : return cmp;
2159 : }
2160 :
2161 : /*
2162 : * Build an empty range value of the type indicated by the typcache entry.
2163 : */
2164 : RangeType *
2165 3162 : make_empty_range(TypeCacheEntry *typcache)
2166 : {
2167 : RangeBound lower;
2168 : RangeBound upper;
2169 :
2170 3162 : lower.val = (Datum) 0;
2171 3162 : lower.infinite = false;
2172 3162 : lower.inclusive = false;
2173 3162 : lower.lower = true;
2174 :
2175 3162 : upper.val = (Datum) 0;
2176 3162 : upper.infinite = false;
2177 3162 : upper.inclusive = false;
2178 3162 : upper.lower = false;
2179 :
2180 3162 : return make_range(typcache, &lower, &upper, true, NULL);
2181 : }
2182 :
2183 : /*
2184 : * Planner support function for elem_contained_by_range (<@ operator).
2185 : */
2186 : Datum
2187 126 : elem_contained_by_range_support(PG_FUNCTION_ARGS)
2188 : {
2189 126 : Node *rawreq = (Node *) PG_GETARG_POINTER(0);
2190 126 : Node *ret = NULL;
2191 :
2192 126 : if (IsA(rawreq, SupportRequestSimplify))
2193 : {
2194 96 : SupportRequestSimplify *req = (SupportRequestSimplify *) rawreq;
2195 96 : FuncExpr *fexpr = req->fcall;
2196 : Expr *leftop,
2197 : *rightop;
2198 :
2199 : Assert(list_length(fexpr->args) == 2);
2200 96 : leftop = linitial(fexpr->args);
2201 96 : rightop = lsecond(fexpr->args);
2202 :
2203 96 : ret = find_simplified_clause(req->root, rightop, leftop);
2204 : }
2205 :
2206 126 : PG_RETURN_POINTER(ret);
2207 : }
2208 :
2209 : /*
2210 : * Planner support function for range_contains_elem (@> operator).
2211 : */
2212 : Datum
2213 258 : range_contains_elem_support(PG_FUNCTION_ARGS)
2214 : {
2215 258 : Node *rawreq = (Node *) PG_GETARG_POINTER(0);
2216 258 : Node *ret = NULL;
2217 :
2218 258 : if (IsA(rawreq, SupportRequestSimplify))
2219 : {
2220 132 : SupportRequestSimplify *req = (SupportRequestSimplify *) rawreq;
2221 132 : FuncExpr *fexpr = req->fcall;
2222 : Expr *leftop,
2223 : *rightop;
2224 :
2225 : Assert(list_length(fexpr->args) == 2);
2226 132 : leftop = linitial(fexpr->args);
2227 132 : rightop = lsecond(fexpr->args);
2228 :
2229 132 : ret = find_simplified_clause(req->root, leftop, rightop);
2230 : }
2231 :
2232 258 : PG_RETURN_POINTER(ret);
2233 : }
2234 :
2235 :
2236 : /*
2237 : *----------------------------------------------------------
2238 : * STATIC FUNCTIONS
2239 : *----------------------------------------------------------
2240 : */
2241 :
2242 : /*
2243 : * Given a string representing the flags for the range type, return the flags
2244 : * represented as a char.
2245 : */
2246 : static char
2247 5166 : range_parse_flags(const char *flags_str)
2248 : {
2249 5166 : char flags = 0;
2250 :
2251 5166 : if (flags_str[0] == '\0' ||
2252 5166 : flags_str[1] == '\0' ||
2253 5166 : flags_str[2] != '\0')
2254 0 : ereport(ERROR,
2255 : (errcode(ERRCODE_SYNTAX_ERROR),
2256 : errmsg("invalid range bound flags"),
2257 : errhint("Valid values are \"[]\", \"[)\", \"(]\", and \"()\".")));
2258 :
2259 5166 : switch (flags_str[0])
2260 : {
2261 240 : case '[':
2262 240 : flags |= RANGE_LB_INC;
2263 240 : break;
2264 4926 : case '(':
2265 4926 : break;
2266 0 : default:
2267 0 : ereport(ERROR,
2268 : (errcode(ERRCODE_SYNTAX_ERROR),
2269 : errmsg("invalid range bound flags"),
2270 : errhint("Valid values are \"[]\", \"[)\", \"(]\", and \"()\".")));
2271 : }
2272 :
2273 5166 : switch (flags_str[1])
2274 : {
2275 5052 : case ']':
2276 5052 : flags |= RANGE_UB_INC;
2277 5052 : break;
2278 114 : case ')':
2279 114 : break;
2280 0 : default:
2281 0 : ereport(ERROR,
2282 : (errcode(ERRCODE_SYNTAX_ERROR),
2283 : errmsg("invalid range bound flags"),
2284 : errhint("Valid values are \"[]\", \"[)\", \"(]\", and \"()\".")));
2285 : }
2286 :
2287 5166 : return flags;
2288 : }
2289 :
2290 : /*
2291 : * Parse range input.
2292 : *
2293 : * Input parameters:
2294 : * string: input string to be parsed
2295 : * Output parameters:
2296 : * *flags: receives flags bitmask
2297 : * *lbound_str: receives palloc'd lower bound string, or NULL if none
2298 : * *ubound_str: receives palloc'd upper bound string, or NULL if none
2299 : *
2300 : * This is modeled somewhat after record_in in rowtypes.c.
2301 : * The input syntax is:
2302 : * <range> := EMPTY
2303 : * | <lb-inc> <string>, <string> <ub-inc>
2304 : * <lb-inc> := '[' | '('
2305 : * <ub-inc> := ']' | ')'
2306 : *
2307 : * Whitespace before or after <range> is ignored. Whitespace within a <string>
2308 : * is taken literally and becomes part of the input string for that bound.
2309 : *
2310 : * A <string> of length zero is taken as "infinite" (i.e. no bound), unless it
2311 : * is surrounded by double-quotes, in which case it is the literal empty
2312 : * string.
2313 : *
2314 : * Within a <string>, special characters (such as comma, parenthesis, or
2315 : * brackets) can be enclosed in double-quotes or escaped with backslash. Within
2316 : * double-quotes, a double-quote can be escaped with double-quote or backslash.
2317 : *
2318 : * Returns true on success, false on failure (but failures will return only if
2319 : * escontext is an ErrorSaveContext).
2320 : */
2321 : static bool
2322 7038 : range_parse(const char *string, char *flags, char **lbound_str,
2323 : char **ubound_str, Node *escontext)
2324 : {
2325 7038 : const char *ptr = string;
2326 : bool infinite;
2327 :
2328 7038 : *flags = 0;
2329 :
2330 : /* consume whitespace */
2331 7062 : while (*ptr != '\0' && isspace((unsigned char) *ptr))
2332 24 : ptr++;
2333 :
2334 : /* check for empty range */
2335 7038 : if (pg_strncasecmp(ptr, RANGE_EMPTY_LITERAL,
2336 : strlen(RANGE_EMPTY_LITERAL)) == 0)
2337 : {
2338 588 : *flags = RANGE_EMPTY;
2339 588 : *lbound_str = NULL;
2340 588 : *ubound_str = NULL;
2341 :
2342 588 : ptr += strlen(RANGE_EMPTY_LITERAL);
2343 :
2344 : /* the rest should be whitespace */
2345 600 : while (*ptr != '\0' && isspace((unsigned char) *ptr))
2346 12 : ptr++;
2347 :
2348 : /* should have consumed everything */
2349 588 : if (*ptr != '\0')
2350 0 : ereturn(escontext, false,
2351 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2352 : errmsg("malformed range literal: \"%s\"",
2353 : string),
2354 : errdetail("Junk after \"empty\" key word.")));
2355 :
2356 588 : return true;
2357 : }
2358 :
2359 6450 : if (*ptr == '[')
2360 : {
2361 5764 : *flags |= RANGE_LB_INC;
2362 5764 : ptr++;
2363 : }
2364 686 : else if (*ptr == '(')
2365 662 : ptr++;
2366 : else
2367 24 : ereturn(escontext, false,
2368 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2369 : errmsg("malformed range literal: \"%s\"",
2370 : string),
2371 : errdetail("Missing left parenthesis or bracket.")));
2372 :
2373 6426 : ptr = range_parse_bound(string, ptr, lbound_str, &infinite, escontext);
2374 6420 : if (ptr == NULL)
2375 0 : return false;
2376 6420 : if (infinite)
2377 162 : *flags |= RANGE_LB_INF;
2378 :
2379 6420 : if (*ptr == ',')
2380 6396 : ptr++;
2381 : else
2382 24 : ereturn(escontext, false,
2383 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2384 : errmsg("malformed range literal: \"%s\"",
2385 : string),
2386 : errdetail("Missing comma after lower bound.")));
2387 :
2388 6396 : ptr = range_parse_bound(string, ptr, ubound_str, &infinite, escontext);
2389 6396 : if (ptr == NULL)
2390 12 : return false;
2391 6384 : if (infinite)
2392 252 : *flags |= RANGE_UB_INF;
2393 :
2394 6384 : if (*ptr == ']')
2395 : {
2396 650 : *flags |= RANGE_UB_INC;
2397 650 : ptr++;
2398 : }
2399 5734 : else if (*ptr == ')')
2400 5722 : ptr++;
2401 : else /* must be a comma */
2402 12 : ereturn(escontext, false,
2403 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2404 : errmsg("malformed range literal: \"%s\"",
2405 : string),
2406 : errdetail("Too many commas.")));
2407 :
2408 : /* consume whitespace */
2409 6402 : while (*ptr != '\0' && isspace((unsigned char) *ptr))
2410 30 : ptr++;
2411 :
2412 6372 : if (*ptr != '\0')
2413 18 : ereturn(escontext, false,
2414 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2415 : errmsg("malformed range literal: \"%s\"",
2416 : string),
2417 : errdetail("Junk after right parenthesis or bracket.")));
2418 :
2419 6354 : return true;
2420 : }
2421 :
2422 : /*
2423 : * Helper for range_parse: parse and de-quote one bound string.
2424 : *
2425 : * We scan until finding comma, right parenthesis, or right bracket.
2426 : *
2427 : * Input parameters:
2428 : * string: entire input string (used only for error reports)
2429 : * ptr: where to start parsing bound
2430 : * Output parameters:
2431 : * *bound_str: receives palloc'd bound string, or NULL if none
2432 : * *infinite: set true if no bound, else false
2433 : *
2434 : * The return value is the scan ptr, advanced past the bound string.
2435 : * However, if escontext is an ErrorSaveContext, we return NULL on failure.
2436 : */
2437 : static const char *
2438 12822 : range_parse_bound(const char *string, const char *ptr,
2439 : char **bound_str, bool *infinite, Node *escontext)
2440 : {
2441 : StringInfoData buf;
2442 :
2443 : /* Check for null: completely empty input means null */
2444 12822 : if (*ptr == ',' || *ptr == ')' || *ptr == ']')
2445 : {
2446 414 : *bound_str = NULL;
2447 414 : *infinite = true;
2448 : }
2449 : else
2450 : {
2451 : /* Extract string for this bound */
2452 12408 : bool inquote = false;
2453 :
2454 12408 : initStringInfo(&buf);
2455 38158 : while (inquote || !(*ptr == ',' || *ptr == ')' || *ptr == ']'))
2456 : {
2457 25768 : char ch = *ptr++;
2458 :
2459 25768 : if (ch == '\0')
2460 18 : ereturn(escontext, NULL,
2461 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2462 : errmsg("malformed range literal: \"%s\"",
2463 : string),
2464 : errdetail("Unexpected end of input.")));
2465 25750 : if (ch == '\\')
2466 : {
2467 42 : if (*ptr == '\0')
2468 0 : ereturn(escontext, NULL,
2469 : (errcode(ERRCODE_INVALID_TEXT_REPRESENTATION),
2470 : errmsg("malformed range literal: \"%s\"",
2471 : string),
2472 : errdetail("Unexpected end of input.")));
2473 42 : appendStringInfoChar(&buf, *ptr++);
2474 : }
2475 25708 : else if (ch == '"')
2476 : {
2477 400 : if (!inquote)
2478 200 : inquote = true;
2479 200 : else if (*ptr == '"')
2480 : {
2481 : /* doubled quote within quote sequence */
2482 6 : appendStringInfoChar(&buf, *ptr++);
2483 : }
2484 : else
2485 194 : inquote = false;
2486 : }
2487 : else
2488 25308 : appendStringInfoChar(&buf, ch);
2489 : }
2490 :
2491 12390 : *bound_str = buf.data;
2492 12390 : *infinite = false;
2493 : }
2494 :
2495 12804 : return ptr;
2496 : }
2497 :
2498 : /*
2499 : * Convert a deserialized range value to text form
2500 : *
2501 : * Inputs are the flags byte, and the two bound values already converted to
2502 : * text (but not yet quoted). If no bound value, pass NULL.
2503 : *
2504 : * Result is a palloc'd string
2505 : */
2506 : static char *
2507 107608 : range_deparse(char flags, const char *lbound_str, const char *ubound_str)
2508 : {
2509 : StringInfoData buf;
2510 :
2511 107608 : if (flags & RANGE_EMPTY)
2512 16904 : return pstrdup(RANGE_EMPTY_LITERAL);
2513 :
2514 90704 : initStringInfo(&buf);
2515 :
2516 90704 : appendStringInfoChar(&buf, (flags & RANGE_LB_INC) ? '[' : '(');
2517 :
2518 90704 : if (RANGE_HAS_LBOUND(flags))
2519 88214 : appendStringInfoString(&buf, range_bound_escape(lbound_str));
2520 :
2521 90704 : appendStringInfoChar(&buf, ',');
2522 :
2523 90704 : if (RANGE_HAS_UBOUND(flags))
2524 88076 : appendStringInfoString(&buf, range_bound_escape(ubound_str));
2525 :
2526 90704 : appendStringInfoChar(&buf, (flags & RANGE_UB_INC) ? ']' : ')');
2527 :
2528 90704 : return buf.data;
2529 : }
2530 :
2531 : /*
2532 : * Helper for range_deparse: quote a bound value as needed
2533 : *
2534 : * Result is a palloc'd string
2535 : */
2536 : static char *
2537 176290 : range_bound_escape(const char *value)
2538 : {
2539 : bool nq;
2540 : const char *ptr;
2541 : StringInfoData buf;
2542 :
2543 176290 : initStringInfo(&buf);
2544 :
2545 : /* Detect whether we need double quotes for this value */
2546 176290 : nq = (value[0] == '\0'); /* force quotes for empty string */
2547 807828 : for (ptr = value; *ptr; ptr++)
2548 : {
2549 632048 : char ch = *ptr;
2550 :
2551 632048 : if (ch == '"' || ch == '\\' ||
2552 631910 : ch == '(' || ch == ')' ||
2553 631886 : ch == '[' || ch == ']' ||
2554 631838 : ch == ',' ||
2555 631838 : isspace((unsigned char) ch))
2556 : {
2557 510 : nq = true;
2558 510 : break;
2559 : }
2560 : }
2561 :
2562 : /* And emit the string */
2563 176290 : if (nq)
2564 534 : appendStringInfoChar(&buf, '"');
2565 812022 : for (ptr = value; *ptr; ptr++)
2566 : {
2567 635732 : char ch = *ptr;
2568 :
2569 635732 : if (ch == '"' || ch == '\\')
2570 120 : appendStringInfoChar(&buf, ch);
2571 635732 : appendStringInfoChar(&buf, ch);
2572 : }
2573 176290 : if (nq)
2574 534 : appendStringInfoChar(&buf, '"');
2575 :
2576 176290 : return buf.data;
2577 : }
2578 :
2579 : /*
2580 : * Test whether range r1 contains range r2.
2581 : *
2582 : * Caller has already checked that they are the same range type, and looked up
2583 : * the necessary typcache entry.
2584 : */
2585 : bool
2586 486492 : range_contains_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
2587 : {
2588 : RangeBound lower1;
2589 : RangeBound upper1;
2590 : bool empty1;
2591 : RangeBound lower2;
2592 : RangeBound upper2;
2593 : bool empty2;
2594 :
2595 : /* Different types should be prevented by ANYRANGE matching rules */
2596 486492 : if (RangeTypeGetOid(r1) != RangeTypeGetOid(r2))
2597 0 : elog(ERROR, "range types do not match");
2598 :
2599 486492 : range_deserialize(typcache, r1, &lower1, &upper1, &empty1);
2600 486492 : range_deserialize(typcache, r2, &lower2, &upper2, &empty2);
2601 :
2602 : /* If either range is empty, the answer is easy */
2603 486492 : if (empty2)
2604 314752 : return true;
2605 171740 : else if (empty1)
2606 13566 : return false;
2607 :
2608 : /* Else we must have lower1 <= lower2 and upper1 >= upper2 */
2609 158174 : if (range_cmp_bounds(typcache, &lower1, &lower2) > 0)
2610 75508 : return false;
2611 82666 : if (range_cmp_bounds(typcache, &upper1, &upper2) < 0)
2612 74398 : return false;
2613 :
2614 8268 : return true;
2615 : }
2616 :
2617 : bool
2618 123802 : range_contained_by_internal(TypeCacheEntry *typcache, const RangeType *r1, const RangeType *r2)
2619 : {
2620 123802 : return range_contains_internal(typcache, r2, r1);
2621 : }
2622 :
2623 : /*
2624 : * Test whether range r contains a specific element value.
2625 : */
2626 : bool
2627 90184 : range_contains_elem_internal(TypeCacheEntry *typcache, const RangeType *r, Datum val)
2628 : {
2629 : RangeBound lower;
2630 : RangeBound upper;
2631 : bool empty;
2632 : int32 cmp;
2633 :
2634 90184 : range_deserialize(typcache, r, &lower, &upper, &empty);
2635 :
2636 90184 : if (empty)
2637 12864 : return false;
2638 :
2639 77320 : if (!lower.infinite)
2640 : {
2641 73066 : cmp = DatumGetInt32(FunctionCall2Coll(&typcache->rng_cmp_proc_finfo,
2642 : typcache->rng_collation,
2643 : lower.val, val));
2644 73066 : if (cmp > 0)
2645 70820 : return false;
2646 2246 : if (cmp == 0 && !lower.inclusive)
2647 0 : return false;
2648 : }
2649 :
2650 6500 : if (!upper.infinite)
2651 : {
2652 6426 : cmp = DatumGetInt32(FunctionCall2Coll(&typcache->rng_cmp_proc_finfo,
2653 : typcache->rng_collation,
2654 : upper.val, val));
2655 6426 : if (cmp < 0)
2656 480 : return false;
2657 5946 : if (cmp == 0 && !upper.inclusive)
2658 0 : return false;
2659 : }
2660 :
2661 6020 : return true;
2662 : }
2663 :
2664 :
2665 : /*
2666 : * datum_compute_size() and datum_write() are used to insert the bound
2667 : * values into a range object. They are modeled after heaptuple.c's
2668 : * heap_compute_data_size() and heap_fill_tuple(), but we need not handle
2669 : * null values here. TYPE_IS_PACKABLE must test the same conditions as
2670 : * heaptuple.c's ATT_IS_PACKABLE macro. See the comments there for more
2671 : * details.
2672 : */
2673 :
2674 : /* Does datatype allow packing into the 1-byte-header varlena format? */
2675 : #define TYPE_IS_PACKABLE(typlen, typstorage) \
2676 : ((typlen) == -1 && (typstorage) != TYPSTORAGE_PLAIN)
2677 :
2678 : /*
2679 : * Increment data_length by the space needed by the datum, including any
2680 : * preceding alignment padding.
2681 : */
2682 : static Size
2683 1894202 : datum_compute_size(Size data_length, Datum val, bool typbyval, char typalign,
2684 : int16 typlen, char typstorage)
2685 : {
2686 1894202 : if (TYPE_IS_PACKABLE(typlen, typstorage) &&
2687 9456 : VARATT_CAN_MAKE_SHORT(DatumGetPointer(val)))
2688 : {
2689 : /*
2690 : * we're anticipating converting to a short varlena header, so adjust
2691 : * length and don't count any alignment
2692 : */
2693 8538 : data_length += VARATT_CONVERTED_SHORT_SIZE(DatumGetPointer(val));
2694 : }
2695 : else
2696 : {
2697 1885664 : data_length = att_align_datum(data_length, typalign, typlen, val);
2698 1885664 : data_length = att_addlength_datum(data_length, typlen, val);
2699 : }
2700 :
2701 1894202 : return data_length;
2702 : }
2703 :
2704 : /*
2705 : * Write the given datum beginning at ptr (after advancing to correct
2706 : * alignment, if needed). Return the pointer incremented by space used.
2707 : */
2708 : static Pointer
2709 1894202 : datum_write(Pointer ptr, Datum datum, bool typbyval, char typalign,
2710 : int16 typlen, char typstorage)
2711 : {
2712 : Size data_length;
2713 :
2714 1894202 : if (typbyval)
2715 : {
2716 : /* pass-by-value */
2717 1884746 : ptr = (char *) att_align_nominal(ptr, typalign);
2718 1884746 : store_att_byval(ptr, datum, typlen);
2719 1884746 : data_length = typlen;
2720 : }
2721 9456 : else if (typlen == -1)
2722 : {
2723 : /* varlena */
2724 9456 : Pointer val = DatumGetPointer(datum);
2725 :
2726 9456 : if (VARATT_IS_EXTERNAL(val))
2727 : {
2728 : /*
2729 : * Throw error, because we must never put a toast pointer inside a
2730 : * range object. Caller should have detoasted it.
2731 : */
2732 0 : elog(ERROR, "cannot store a toast pointer inside a range");
2733 : data_length = 0; /* keep compiler quiet */
2734 : }
2735 9456 : else if (VARATT_IS_SHORT(val))
2736 : {
2737 : /* no alignment for short varlenas */
2738 882 : data_length = VARSIZE_SHORT(val);
2739 882 : memcpy(ptr, val, data_length);
2740 : }
2741 8574 : else if (TYPE_IS_PACKABLE(typlen, typstorage) &&
2742 8574 : VARATT_CAN_MAKE_SHORT(val))
2743 : {
2744 : /* convert to short varlena -- no alignment */
2745 8538 : data_length = VARATT_CONVERTED_SHORT_SIZE(val);
2746 8538 : SET_VARSIZE_SHORT(ptr, data_length);
2747 8538 : memcpy(ptr + 1, VARDATA(val), data_length - 1);
2748 : }
2749 : else
2750 : {
2751 : /* full 4-byte header varlena */
2752 36 : ptr = (char *) att_align_nominal(ptr, typalign);
2753 36 : data_length = VARSIZE(val);
2754 36 : memcpy(ptr, val, data_length);
2755 : }
2756 : }
2757 0 : else if (typlen == -2)
2758 : {
2759 : /* cstring ... never needs alignment */
2760 : Assert(typalign == TYPALIGN_CHAR);
2761 0 : data_length = strlen(DatumGetCString(datum)) + 1;
2762 0 : memcpy(ptr, DatumGetPointer(datum), data_length);
2763 : }
2764 : else
2765 : {
2766 : /* fixed-length pass-by-reference */
2767 0 : ptr = (char *) att_align_nominal(ptr, typalign);
2768 : Assert(typlen > 0);
2769 0 : data_length = typlen;
2770 0 : memcpy(ptr, DatumGetPointer(datum), data_length);
2771 : }
2772 :
2773 1894202 : ptr += data_length;
2774 :
2775 1894202 : return ptr;
2776 : }
2777 :
2778 : /*
2779 : * Common code for the elem_contained_by_range and range_contains_elem
2780 : * support functions. The caller has extracted the function argument
2781 : * expressions, and swapped them if necessary to pass the range first.
2782 : *
2783 : * Returns a simplified replacement expression, or NULL if we can't simplify.
2784 : */
2785 : static Node *
2786 228 : find_simplified_clause(PlannerInfo *root, Expr *rangeExpr, Expr *elemExpr)
2787 : {
2788 : RangeType *range;
2789 : TypeCacheEntry *rangetypcache;
2790 : RangeBound lower;
2791 : RangeBound upper;
2792 : bool empty;
2793 :
2794 : /* can't do anything unless the range is a non-null constant */
2795 228 : if (!IsA(rangeExpr, Const) || ((Const *) rangeExpr)->constisnull)
2796 132 : return NULL;
2797 96 : range = DatumGetRangeTypeP(((Const *) rangeExpr)->constvalue);
2798 :
2799 96 : rangetypcache = lookup_type_cache(RangeTypeGetOid(range),
2800 : TYPECACHE_RANGE_INFO);
2801 96 : if (rangetypcache->rngelemtype == NULL)
2802 0 : elog(ERROR, "type %u is not a range type", RangeTypeGetOid(range));
2803 :
2804 96 : range_deserialize(rangetypcache, range, &lower, &upper, &empty);
2805 :
2806 96 : if (empty)
2807 : {
2808 : /* if the range is empty, then there can be no matches */
2809 6 : return makeBoolConst(false, false);
2810 : }
2811 90 : else if (lower.infinite && upper.infinite)
2812 : {
2813 : /* the range has infinite bounds, so it matches everything */
2814 6 : return makeBoolConst(true, false);
2815 : }
2816 : else
2817 : {
2818 : /* at least one bound is available, we have something to work with */
2819 84 : TypeCacheEntry *elemTypcache = rangetypcache->rngelemtype;
2820 84 : Oid opfamily = rangetypcache->rng_opfamily;
2821 84 : Oid rng_collation = rangetypcache->rng_collation;
2822 84 : Expr *lowerExpr = NULL;
2823 84 : Expr *upperExpr = NULL;
2824 :
2825 84 : if (!lower.infinite && !upper.infinite)
2826 : {
2827 : /*
2828 : * When both bounds are present, we have a problem: the
2829 : * "simplified" clause would need to evaluate the elemExpr twice.
2830 : * That's definitely not okay if the elemExpr is volatile, and
2831 : * it's also unattractive if the elemExpr is expensive.
2832 : */
2833 : QualCost eval_cost;
2834 :
2835 66 : if (contain_volatile_functions((Node *) elemExpr))
2836 6 : return NULL;
2837 :
2838 : /*
2839 : * We define "expensive" as "contains any subplan or more than 10
2840 : * operators". Note that the subplan search has to be done
2841 : * explicitly, since cost_qual_eval() will barf on unplanned
2842 : * subselects.
2843 : */
2844 60 : if (contain_subplans((Node *) elemExpr))
2845 0 : return NULL;
2846 60 : cost_qual_eval_node(&eval_cost, (Node *) elemExpr, root);
2847 60 : if (eval_cost.startup + eval_cost.per_tuple >
2848 60 : 10 * cpu_operator_cost)
2849 0 : return NULL;
2850 : }
2851 :
2852 : /* Okay, try to build boundary comparison expressions */
2853 78 : if (!lower.infinite)
2854 : {
2855 72 : lowerExpr = build_bound_expr(elemExpr,
2856 : lower.val,
2857 : true,
2858 72 : lower.inclusive,
2859 : elemTypcache,
2860 : opfamily,
2861 : rng_collation);
2862 72 : if (lowerExpr == NULL)
2863 0 : return NULL;
2864 : }
2865 :
2866 78 : if (!upper.infinite)
2867 : {
2868 : /* Copy the elemExpr if we need two copies */
2869 66 : if (!lower.infinite)
2870 60 : elemExpr = copyObject(elemExpr);
2871 66 : upperExpr = build_bound_expr(elemExpr,
2872 : upper.val,
2873 : false,
2874 66 : upper.inclusive,
2875 : elemTypcache,
2876 : opfamily,
2877 : rng_collation);
2878 66 : if (upperExpr == NULL)
2879 0 : return NULL;
2880 : }
2881 :
2882 78 : if (lowerExpr != NULL && upperExpr != NULL)
2883 60 : return (Node *) make_andclause(list_make2(lowerExpr, upperExpr));
2884 18 : else if (lowerExpr != NULL)
2885 12 : return (Node *) lowerExpr;
2886 6 : else if (upperExpr != NULL)
2887 6 : return (Node *) upperExpr;
2888 : else
2889 : {
2890 : Assert(false);
2891 0 : return NULL;
2892 : }
2893 : }
2894 : }
2895 :
2896 : /*
2897 : * Helper function for find_simplified_clause().
2898 : *
2899 : * Build the expression (elemExpr Operator val), where the operator is
2900 : * the appropriate member of the given opfamily depending on
2901 : * isLowerBound and isInclusive. typeCache is the typcache entry for
2902 : * the "val" value (presently, this will be the same type as elemExpr).
2903 : * rng_collation is the collation to use in the comparison.
2904 : *
2905 : * Return NULL on failure (if, for some reason, we can't find the operator).
2906 : */
2907 : static Expr *
2908 138 : build_bound_expr(Expr *elemExpr, Datum val,
2909 : bool isLowerBound, bool isInclusive,
2910 : TypeCacheEntry *typeCache,
2911 : Oid opfamily, Oid rng_collation)
2912 : {
2913 138 : Oid elemType = typeCache->type_id;
2914 138 : int16 elemTypeLen = typeCache->typlen;
2915 138 : bool elemByValue = typeCache->typbyval;
2916 138 : Oid elemCollation = typeCache->typcollation;
2917 : int16 strategy;
2918 : Oid oproid;
2919 : Expr *constExpr;
2920 :
2921 : /* Identify the comparison operator to use */
2922 138 : if (isLowerBound)
2923 72 : strategy = isInclusive ? BTGreaterEqualStrategyNumber : BTGreaterStrategyNumber;
2924 : else
2925 66 : strategy = isInclusive ? BTLessEqualStrategyNumber : BTLessStrategyNumber;
2926 :
2927 : /*
2928 : * We could use exprType(elemExpr) here, if it ever becomes possible that
2929 : * elemExpr is not the exact same type as the range elements.
2930 : */
2931 138 : oproid = get_opfamily_member(opfamily, elemType, elemType, strategy);
2932 :
2933 : /* We don't really expect failure here, but just in case ... */
2934 138 : if (!OidIsValid(oproid))
2935 0 : return NULL;
2936 :
2937 : /* OK, convert "val" to a full-fledged Const node, and make the OpExpr */
2938 138 : constExpr = (Expr *) makeConst(elemType,
2939 : -1,
2940 : elemCollation,
2941 : elemTypeLen,
2942 : val,
2943 : false,
2944 : elemByValue);
2945 :
2946 138 : return make_opclause(oproid,
2947 : BOOLOID,
2948 : false,
2949 : elemExpr,
2950 : constExpr,
2951 : InvalidOid,
2952 : rng_collation);
2953 : }
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