Line data Source code
1 : /*-------------------------------------------------------------------------
2 : *
3 : * readfuncs.c
4 : * Reader functions for Postgres tree nodes.
5 : *
6 : * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
7 : * Portions Copyright (c) 1994, Regents of the University of California
8 : *
9 : *
10 : * IDENTIFICATION
11 : * src/backend/nodes/readfuncs.c
12 : *
13 : * NOTES
14 : * Parse location fields are written out by outfuncs.c, but only for
15 : * debugging use. When reading a location field, we normally discard
16 : * the stored value and set the location field to -1 (ie, "unknown").
17 : * This is because nodes coming from a stored rule should not be thought
18 : * to have a known location in the current query's text.
19 : *
20 : * However, if restore_location_fields is true, we do restore location
21 : * fields from the string. This is currently intended only for use by the
22 : * WRITE_READ_PARSE_PLAN_TREES test code, which doesn't want to cause
23 : * any change in the node contents.
24 : *
25 : *-------------------------------------------------------------------------
26 : */
27 : #include "postgres.h"
28 :
29 : #include <math.h>
30 :
31 : #include "miscadmin.h"
32 : #include "nodes/bitmapset.h"
33 : #include "nodes/readfuncs.h"
34 :
35 :
36 : /*
37 : * Macros to simplify reading of different kinds of fields. Use these
38 : * wherever possible to reduce the chance for silly typos. Note that these
39 : * hard-wire conventions about the names of the local variables in a Read
40 : * routine.
41 : */
42 :
43 : /* Macros for declaring appropriate local variables */
44 :
45 : /* A few guys need only local_node */
46 : #define READ_LOCALS_NO_FIELDS(nodeTypeName) \
47 : nodeTypeName *local_node = makeNode(nodeTypeName)
48 :
49 : /* And a few guys need only the pg_strtok support fields */
50 : #define READ_TEMP_LOCALS() \
51 : const char *token; \
52 : int length
53 :
54 : /* ... but most need both */
55 : #define READ_LOCALS(nodeTypeName) \
56 : READ_LOCALS_NO_FIELDS(nodeTypeName); \
57 : READ_TEMP_LOCALS()
58 :
59 : /* Read an integer field (anything written as ":fldname %d") */
60 : #define READ_INT_FIELD(fldname) \
61 : token = pg_strtok(&length); /* skip :fldname */ \
62 : token = pg_strtok(&length); /* get field value */ \
63 : local_node->fldname = atoi(token)
64 :
65 : /* Read an unsigned integer field (anything written as ":fldname %u") */
66 : #define READ_UINT_FIELD(fldname) \
67 : token = pg_strtok(&length); /* skip :fldname */ \
68 : token = pg_strtok(&length); /* get field value */ \
69 : local_node->fldname = atoui(token)
70 :
71 : /* Read an unsigned integer field (anything written using UINT64_FORMAT) */
72 : #define READ_UINT64_FIELD(fldname) \
73 : token = pg_strtok(&length); /* skip :fldname */ \
74 : token = pg_strtok(&length); /* get field value */ \
75 : local_node->fldname = strtou64(token, NULL, 10)
76 :
77 : /* Read a long integer field (anything written as ":fldname %ld") */
78 : #define READ_LONG_FIELD(fldname) \
79 : token = pg_strtok(&length); /* skip :fldname */ \
80 : token = pg_strtok(&length); /* get field value */ \
81 : local_node->fldname = atol(token)
82 :
83 : /* Read an OID field (don't hard-wire assumption that OID is same as uint) */
84 : #define READ_OID_FIELD(fldname) \
85 : token = pg_strtok(&length); /* skip :fldname */ \
86 : token = pg_strtok(&length); /* get field value */ \
87 : local_node->fldname = atooid(token)
88 :
89 : /* Read a char field (ie, one ascii character) */
90 : #define READ_CHAR_FIELD(fldname) \
91 : token = pg_strtok(&length); /* skip :fldname */ \
92 : token = pg_strtok(&length); /* get field value */ \
93 : /* avoid overhead of calling debackslash() for one char */ \
94 : local_node->fldname = (length == 0) ? '\0' : (token[0] == '\\' ? token[1] : token[0])
95 :
96 : /* Read an enumerated-type field that was written as an integer code */
97 : #define READ_ENUM_FIELD(fldname, enumtype) \
98 : token = pg_strtok(&length); /* skip :fldname */ \
99 : token = pg_strtok(&length); /* get field value */ \
100 : local_node->fldname = (enumtype) atoi(token)
101 :
102 : /* Read a float field */
103 : #define READ_FLOAT_FIELD(fldname) \
104 : token = pg_strtok(&length); /* skip :fldname */ \
105 : token = pg_strtok(&length); /* get field value */ \
106 : local_node->fldname = atof(token)
107 :
108 : /* Read a boolean field */
109 : #define READ_BOOL_FIELD(fldname) \
110 : token = pg_strtok(&length); /* skip :fldname */ \
111 : token = pg_strtok(&length); /* get field value */ \
112 : local_node->fldname = strtobool(token)
113 :
114 : /* Read a character-string field */
115 : #define READ_STRING_FIELD(fldname) \
116 : token = pg_strtok(&length); /* skip :fldname */ \
117 : token = pg_strtok(&length); /* get field value */ \
118 : local_node->fldname = nullable_string(token, length)
119 :
120 : /* Read a parse location field (and possibly throw away the value) */
121 : #ifdef WRITE_READ_PARSE_PLAN_TREES
122 : #define READ_LOCATION_FIELD(fldname) \
123 : token = pg_strtok(&length); /* skip :fldname */ \
124 : token = pg_strtok(&length); /* get field value */ \
125 : local_node->fldname = restore_location_fields ? atoi(token) : -1
126 : #else
127 : #define READ_LOCATION_FIELD(fldname) \
128 : token = pg_strtok(&length); /* skip :fldname */ \
129 : token = pg_strtok(&length); /* get field value */ \
130 : (void) token; /* in case not used elsewhere */ \
131 : local_node->fldname = -1 /* set field to "unknown" */
132 : #endif
133 :
134 : /* Read a Node field */
135 : #define READ_NODE_FIELD(fldname) \
136 : token = pg_strtok(&length); /* skip :fldname */ \
137 : (void) token; /* in case not used elsewhere */ \
138 : local_node->fldname = nodeRead(NULL, 0)
139 :
140 : /* Read a bitmapset field */
141 : #define READ_BITMAPSET_FIELD(fldname) \
142 : token = pg_strtok(&length); /* skip :fldname */ \
143 : (void) token; /* in case not used elsewhere */ \
144 : local_node->fldname = _readBitmapset()
145 :
146 : /* Read an attribute number array */
147 : #define READ_ATTRNUMBER_ARRAY(fldname, len) \
148 : token = pg_strtok(&length); /* skip :fldname */ \
149 : local_node->fldname = readAttrNumberCols(len)
150 :
151 : /* Read an oid array */
152 : #define READ_OID_ARRAY(fldname, len) \
153 : token = pg_strtok(&length); /* skip :fldname */ \
154 : local_node->fldname = readOidCols(len)
155 :
156 : /* Read an int array */
157 : #define READ_INT_ARRAY(fldname, len) \
158 : token = pg_strtok(&length); /* skip :fldname */ \
159 : local_node->fldname = readIntCols(len)
160 :
161 : /* Read a bool array */
162 : #define READ_BOOL_ARRAY(fldname, len) \
163 : token = pg_strtok(&length); /* skip :fldname */ \
164 : local_node->fldname = readBoolCols(len)
165 :
166 : /* Routine exit */
167 : #define READ_DONE() \
168 : return local_node
169 :
170 :
171 : /*
172 : * NOTE: use atoi() to read values written with %d, or atoui() to read
173 : * values written with %u in outfuncs.c. An exception is OID values,
174 : * for which use atooid(). (As of 7.1, outfuncs.c writes OIDs as %u,
175 : * but this will probably change in the future.)
176 : */
177 : #define atoui(x) ((unsigned int) strtoul((x), NULL, 10))
178 :
179 : #define strtobool(x) ((*(x) == 't') ? true : false)
180 :
181 : static char *
182 13054672 : nullable_string(const char *token, int length)
183 : {
184 : /* outToken emits <> for NULL, and pg_strtok makes that an empty string */
185 13054672 : if (length == 0)
186 6073364 : return NULL;
187 : /* outToken emits "" for empty string */
188 6981308 : if (length == 2 && token[0] == '"' && token[1] == '"')
189 156 : return pstrdup("");
190 : /* otherwise, we must remove protective backslashes added by outToken */
191 6981152 : return debackslash(token, length);
192 : }
193 :
194 :
195 : /*
196 : * _readBitmapset
197 : *
198 : * Note: this code is used in contexts where we know that a Bitmapset
199 : * is expected. There is equivalent code in nodeRead() that can read a
200 : * Bitmapset when we come across one in other contexts.
201 : */
202 : static Bitmapset *
203 15361610 : _readBitmapset(void)
204 : {
205 15361610 : Bitmapset *result = NULL;
206 :
207 : READ_TEMP_LOCALS();
208 :
209 15361610 : token = pg_strtok(&length);
210 15361610 : if (token == NULL)
211 0 : elog(ERROR, "incomplete Bitmapset structure");
212 15361610 : if (length != 1 || token[0] != '(')
213 0 : elog(ERROR, "unrecognized token: \"%.*s\"", length, token);
214 :
215 15361610 : token = pg_strtok(&length);
216 15361610 : if (token == NULL)
217 0 : elog(ERROR, "incomplete Bitmapset structure");
218 15361610 : if (length != 1 || token[0] != 'b')
219 0 : elog(ERROR, "unrecognized token: \"%.*s\"", length, token);
220 :
221 : for (;;)
222 4165318 : {
223 : int val;
224 : char *endptr;
225 :
226 19526928 : token = pg_strtok(&length);
227 19526928 : if (token == NULL)
228 0 : elog(ERROR, "unterminated Bitmapset structure");
229 19526928 : if (length == 1 && token[0] == ')')
230 15361610 : break;
231 4165318 : val = (int) strtol(token, &endptr, 10);
232 4165318 : if (endptr != token + length)
233 0 : elog(ERROR, "unrecognized integer: \"%.*s\"", length, token);
234 4165318 : result = bms_add_member(result, val);
235 : }
236 :
237 15361610 : return result;
238 : }
239 :
240 : /*
241 : * We export this function for use by extensions that define extensible nodes.
242 : * That's somewhat historical, though, because calling nodeRead() will work.
243 : */
244 : Bitmapset *
245 0 : readBitmapset(void)
246 : {
247 0 : return _readBitmapset();
248 : }
249 :
250 : #include "readfuncs.funcs.c"
251 :
252 :
253 : /*
254 : * Support functions for nodes with custom_read_write attribute or
255 : * special_read_write attribute
256 : */
257 :
258 : static Const *
259 2428866 : _readConst(void)
260 : {
261 2428866 : READ_LOCALS(Const);
262 :
263 2428866 : READ_OID_FIELD(consttype);
264 2428866 : READ_INT_FIELD(consttypmod);
265 2428866 : READ_OID_FIELD(constcollid);
266 2428866 : READ_INT_FIELD(constlen);
267 2428866 : READ_BOOL_FIELD(constbyval);
268 2428866 : READ_BOOL_FIELD(constisnull);
269 2428866 : READ_LOCATION_FIELD(location);
270 :
271 2428866 : token = pg_strtok(&length); /* skip :constvalue */
272 2428866 : if (local_node->constisnull)
273 192790 : token = pg_strtok(&length); /* skip "<>" */
274 : else
275 2236076 : local_node->constvalue = readDatum(local_node->constbyval);
276 :
277 2428866 : READ_DONE();
278 : }
279 :
280 : static BoolExpr *
281 319332 : _readBoolExpr(void)
282 : {
283 319332 : READ_LOCALS(BoolExpr);
284 :
285 : /* do-it-yourself enum representation */
286 319332 : token = pg_strtok(&length); /* skip :boolop */
287 319332 : token = pg_strtok(&length); /* get field value */
288 319332 : if (length == 3 && strncmp(token, "and", 3) == 0)
289 242388 : local_node->boolop = AND_EXPR;
290 76944 : else if (length == 2 && strncmp(token, "or", 2) == 0)
291 41414 : local_node->boolop = OR_EXPR;
292 35530 : else if (length == 3 && strncmp(token, "not", 3) == 0)
293 35530 : local_node->boolop = NOT_EXPR;
294 : else
295 0 : elog(ERROR, "unrecognized boolop \"%.*s\"", length, token);
296 :
297 319332 : READ_NODE_FIELD(args);
298 319332 : READ_LOCATION_FIELD(location);
299 :
300 319332 : READ_DONE();
301 : }
302 :
303 : static A_Const *
304 1152532 : _readA_Const(void)
305 : {
306 1152532 : READ_LOCALS(A_Const);
307 :
308 : /* We expect either NULL or :val here */
309 1152532 : token = pg_strtok(&length);
310 1152532 : if (length == 4 && strncmp(token, "NULL", 4) == 0)
311 60192 : local_node->isnull = true;
312 : else
313 : {
314 1092340 : union ValUnion *tmp = nodeRead(NULL, 0);
315 :
316 : /* To forestall valgrind complaints, copy only the valid data */
317 1092340 : switch (nodeTag(tmp))
318 : {
319 440714 : case T_Integer:
320 440714 : memcpy(&local_node->val, tmp, sizeof(Integer));
321 440714 : break;
322 10720 : case T_Float:
323 10720 : memcpy(&local_node->val, tmp, sizeof(Float));
324 10720 : break;
325 53450 : case T_Boolean:
326 53450 : memcpy(&local_node->val, tmp, sizeof(Boolean));
327 53450 : break;
328 583412 : case T_String:
329 583412 : memcpy(&local_node->val, tmp, sizeof(String));
330 583412 : break;
331 4044 : case T_BitString:
332 4044 : memcpy(&local_node->val, tmp, sizeof(BitString));
333 4044 : break;
334 0 : default:
335 0 : elog(ERROR, "unrecognized node type: %d",
336 : (int) nodeTag(tmp));
337 : break;
338 : }
339 : }
340 :
341 1152532 : READ_LOCATION_FIELD(location);
342 :
343 1152532 : READ_DONE();
344 : }
345 :
346 : /*
347 : * _readConstraint
348 : */
349 : static Constraint *
350 53794 : _readConstraint(void)
351 : {
352 53794 : READ_LOCALS(Constraint);
353 :
354 53794 : READ_STRING_FIELD(conname);
355 53794 : READ_BOOL_FIELD(deferrable);
356 53794 : READ_BOOL_FIELD(initdeferred);
357 53794 : READ_LOCATION_FIELD(location);
358 :
359 53794 : token = pg_strtok(&length); /* skip :contype */
360 53794 : token = pg_strtok(&length); /* get field value */
361 53794 : if (length == 4 && strncmp(token, "NULL", 4) == 0)
362 48 : local_node->contype = CONSTR_NULL;
363 53746 : else if (length == 8 && strncmp(token, "NOT_NULL", 8) == 0)
364 11604 : local_node->contype = CONSTR_NOTNULL;
365 42142 : else if (length == 7 && strncmp(token, "DEFAULT", 7) == 0)
366 3152 : local_node->contype = CONSTR_DEFAULT;
367 38990 : else if (length == 8 && strncmp(token, "IDENTITY", 8) == 0)
368 664 : local_node->contype = CONSTR_IDENTITY;
369 38326 : else if (length == 9 && strncmp(token, "GENERATED", 9) == 0)
370 1690 : local_node->contype = CONSTR_GENERATED;
371 36636 : else if (length == 5 && strncmp(token, "CHECK", 5) == 0)
372 3688 : local_node->contype = CONSTR_CHECK;
373 32948 : else if (length == 11 && strncmp(token, "PRIMARY_KEY", 11) == 0)
374 20790 : local_node->contype = CONSTR_PRIMARY;
375 12158 : else if (length == 6 && strncmp(token, "UNIQUE", 6) == 0)
376 7218 : local_node->contype = CONSTR_UNIQUE;
377 4940 : else if (length == 9 && strncmp(token, "EXCLUSION", 9) == 0)
378 420 : local_node->contype = CONSTR_EXCLUSION;
379 4520 : else if (length == 11 && strncmp(token, "FOREIGN_KEY", 11) == 0)
380 4220 : local_node->contype = CONSTR_FOREIGN;
381 300 : else if (length == 15 && strncmp(token, "ATTR_DEFERRABLE", 15) == 0)
382 162 : local_node->contype = CONSTR_ATTR_DEFERRABLE;
383 138 : else if (length == 19 && strncmp(token, "ATTR_NOT_DEFERRABLE", 19) == 0)
384 0 : local_node->contype = CONSTR_ATTR_NOT_DEFERRABLE;
385 138 : else if (length == 13 && strncmp(token, "ATTR_DEFERRED", 13) == 0)
386 126 : local_node->contype = CONSTR_ATTR_DEFERRED;
387 12 : else if (length == 14 && strncmp(token, "ATTR_IMMEDIATE", 14) == 0)
388 12 : local_node->contype = CONSTR_ATTR_IMMEDIATE;
389 :
390 53794 : switch (local_node->contype)
391 : {
392 48 : case CONSTR_NULL:
393 : /* no extra fields */
394 48 : break;
395 :
396 11604 : case CONSTR_NOTNULL:
397 11604 : READ_NODE_FIELD(keys);
398 11604 : READ_INT_FIELD(inhcount);
399 11604 : READ_BOOL_FIELD(is_no_inherit);
400 11604 : READ_BOOL_FIELD(skip_validation);
401 11604 : READ_BOOL_FIELD(initially_valid);
402 11604 : break;
403 :
404 3152 : case CONSTR_DEFAULT:
405 3152 : READ_NODE_FIELD(raw_expr);
406 3152 : READ_STRING_FIELD(cooked_expr);
407 3152 : break;
408 :
409 664 : case CONSTR_IDENTITY:
410 664 : READ_NODE_FIELD(options);
411 664 : READ_CHAR_FIELD(generated_when);
412 664 : break;
413 :
414 1690 : case CONSTR_GENERATED:
415 1690 : READ_NODE_FIELD(raw_expr);
416 1690 : READ_STRING_FIELD(cooked_expr);
417 1690 : READ_CHAR_FIELD(generated_when);
418 1690 : break;
419 :
420 3688 : case CONSTR_CHECK:
421 3688 : READ_BOOL_FIELD(is_no_inherit);
422 3688 : READ_NODE_FIELD(raw_expr);
423 3688 : READ_STRING_FIELD(cooked_expr);
424 3688 : READ_BOOL_FIELD(skip_validation);
425 3688 : READ_BOOL_FIELD(initially_valid);
426 3688 : break;
427 :
428 20790 : case CONSTR_PRIMARY:
429 20790 : READ_NODE_FIELD(keys);
430 20790 : READ_NODE_FIELD(including);
431 20790 : READ_NODE_FIELD(options);
432 20790 : READ_STRING_FIELD(indexname);
433 20790 : READ_STRING_FIELD(indexspace);
434 20790 : READ_BOOL_FIELD(reset_default_tblspc);
435 : /* access_method and where_clause not currently used */
436 20790 : break;
437 :
438 7218 : case CONSTR_UNIQUE:
439 7218 : READ_BOOL_FIELD(nulls_not_distinct);
440 7218 : READ_NODE_FIELD(keys);
441 7218 : READ_NODE_FIELD(including);
442 7218 : READ_NODE_FIELD(options);
443 7218 : READ_STRING_FIELD(indexname);
444 7218 : READ_STRING_FIELD(indexspace);
445 7218 : READ_BOOL_FIELD(reset_default_tblspc);
446 : /* access_method and where_clause not currently used */
447 7218 : break;
448 :
449 420 : case CONSTR_EXCLUSION:
450 420 : READ_NODE_FIELD(exclusions);
451 420 : READ_NODE_FIELD(including);
452 420 : READ_NODE_FIELD(options);
453 420 : READ_STRING_FIELD(indexname);
454 420 : READ_STRING_FIELD(indexspace);
455 420 : READ_BOOL_FIELD(reset_default_tblspc);
456 420 : READ_STRING_FIELD(access_method);
457 420 : READ_NODE_FIELD(where_clause);
458 420 : break;
459 :
460 4220 : case CONSTR_FOREIGN:
461 4220 : READ_NODE_FIELD(pktable);
462 4220 : READ_NODE_FIELD(fk_attrs);
463 4220 : READ_NODE_FIELD(pk_attrs);
464 4220 : READ_CHAR_FIELD(fk_matchtype);
465 4220 : READ_CHAR_FIELD(fk_upd_action);
466 4220 : READ_CHAR_FIELD(fk_del_action);
467 4220 : READ_NODE_FIELD(fk_del_set_cols);
468 4220 : READ_NODE_FIELD(old_conpfeqop);
469 4220 : READ_OID_FIELD(old_pktable_oid);
470 4220 : READ_BOOL_FIELD(skip_validation);
471 4220 : READ_BOOL_FIELD(initially_valid);
472 4220 : break;
473 :
474 300 : case CONSTR_ATTR_DEFERRABLE:
475 : case CONSTR_ATTR_NOT_DEFERRABLE:
476 : case CONSTR_ATTR_DEFERRED:
477 : case CONSTR_ATTR_IMMEDIATE:
478 : /* no extra fields */
479 300 : break;
480 :
481 0 : default:
482 0 : elog(ERROR, "unrecognized ConstrType: %d", (int) local_node->contype);
483 : break;
484 : }
485 :
486 53794 : READ_DONE();
487 : }
488 :
489 : static RangeTblEntry *
490 1418154 : _readRangeTblEntry(void)
491 : {
492 1418154 : READ_LOCALS(RangeTblEntry);
493 :
494 : /* put alias + eref first to make dump more legible */
495 1418154 : READ_NODE_FIELD(alias);
496 1418154 : READ_NODE_FIELD(eref);
497 1418154 : READ_ENUM_FIELD(rtekind, RTEKind);
498 :
499 1418154 : switch (local_node->rtekind)
500 : {
501 858920 : case RTE_RELATION:
502 858920 : READ_OID_FIELD(relid);
503 858920 : READ_CHAR_FIELD(relkind);
504 858920 : READ_INT_FIELD(rellockmode);
505 858920 : READ_NODE_FIELD(tablesample);
506 858920 : READ_UINT_FIELD(perminfoindex);
507 858920 : break;
508 102398 : case RTE_SUBQUERY:
509 102398 : READ_NODE_FIELD(subquery);
510 102398 : READ_BOOL_FIELD(security_barrier);
511 : /* we re-use these RELATION fields, too: */
512 102398 : READ_OID_FIELD(relid);
513 102398 : READ_CHAR_FIELD(relkind);
514 102398 : READ_INT_FIELD(rellockmode);
515 102398 : READ_UINT_FIELD(perminfoindex);
516 102398 : break;
517 154616 : case RTE_JOIN:
518 154616 : READ_ENUM_FIELD(jointype, JoinType);
519 154616 : READ_INT_FIELD(joinmergedcols);
520 154616 : READ_NODE_FIELD(joinaliasvars);
521 154616 : READ_NODE_FIELD(joinleftcols);
522 154616 : READ_NODE_FIELD(joinrightcols);
523 154616 : READ_NODE_FIELD(join_using_alias);
524 154616 : break;
525 84150 : case RTE_FUNCTION:
526 84150 : READ_NODE_FIELD(functions);
527 84150 : READ_BOOL_FIELD(funcordinality);
528 84150 : break;
529 498 : case RTE_TABLEFUNC:
530 498 : READ_NODE_FIELD(tablefunc);
531 : /* The RTE must have a copy of the column type info, if any */
532 498 : if (local_node->tablefunc)
533 : {
534 282 : TableFunc *tf = local_node->tablefunc;
535 :
536 282 : local_node->coltypes = tf->coltypes;
537 282 : local_node->coltypmods = tf->coltypmods;
538 282 : local_node->colcollations = tf->colcollations;
539 : }
540 498 : break;
541 17092 : case RTE_VALUES:
542 17092 : READ_NODE_FIELD(values_lists);
543 17092 : READ_NODE_FIELD(coltypes);
544 17092 : READ_NODE_FIELD(coltypmods);
545 17092 : READ_NODE_FIELD(colcollations);
546 17092 : break;
547 9168 : case RTE_CTE:
548 9168 : READ_STRING_FIELD(ctename);
549 9168 : READ_UINT_FIELD(ctelevelsup);
550 9168 : READ_BOOL_FIELD(self_reference);
551 9168 : READ_NODE_FIELD(coltypes);
552 9168 : READ_NODE_FIELD(coltypmods);
553 9168 : READ_NODE_FIELD(colcollations);
554 9168 : break;
555 876 : case RTE_NAMEDTUPLESTORE:
556 876 : READ_STRING_FIELD(enrname);
557 876 : READ_FLOAT_FIELD(enrtuples);
558 876 : READ_NODE_FIELD(coltypes);
559 876 : READ_NODE_FIELD(coltypmods);
560 876 : READ_NODE_FIELD(colcollations);
561 : /* we re-use these RELATION fields, too: */
562 876 : READ_OID_FIELD(relid);
563 876 : break;
564 190436 : case RTE_RESULT:
565 : /* no extra fields */
566 190436 : break;
567 0 : default:
568 0 : elog(ERROR, "unrecognized RTE kind: %d",
569 : (int) local_node->rtekind);
570 : break;
571 : }
572 :
573 1418154 : READ_BOOL_FIELD(lateral);
574 1418154 : READ_BOOL_FIELD(inh);
575 1418154 : READ_BOOL_FIELD(inFromCl);
576 1418154 : READ_NODE_FIELD(securityQuals);
577 :
578 1418154 : READ_DONE();
579 : }
580 :
581 : static A_Expr *
582 550170 : _readA_Expr(void)
583 : {
584 550170 : READ_LOCALS(A_Expr);
585 :
586 550170 : token = pg_strtok(&length);
587 :
588 550170 : if (length == 3 && strncmp(token, "ANY", 3) == 0)
589 : {
590 12416 : local_node->kind = AEXPR_OP_ANY;
591 12416 : READ_NODE_FIELD(name);
592 : }
593 537754 : else if (length == 3 && strncmp(token, "ALL", 3) == 0)
594 : {
595 144 : local_node->kind = AEXPR_OP_ALL;
596 144 : READ_NODE_FIELD(name);
597 : }
598 537610 : else if (length == 8 && strncmp(token, "DISTINCT", 8) == 0)
599 : {
600 742 : local_node->kind = AEXPR_DISTINCT;
601 742 : READ_NODE_FIELD(name);
602 : }
603 536868 : else if (length == 12 && strncmp(token, "NOT_DISTINCT", 12) == 0)
604 : {
605 68 : local_node->kind = AEXPR_NOT_DISTINCT;
606 68 : READ_NODE_FIELD(name);
607 : }
608 536800 : else if (length == 6 && strncmp(token, "NULLIF", 6) == 0)
609 : {
610 294 : local_node->kind = AEXPR_NULLIF;
611 294 : READ_NODE_FIELD(name);
612 : }
613 536506 : else if (length == 2 && strncmp(token, "IN", 2) == 0)
614 : {
615 18190 : local_node->kind = AEXPR_IN;
616 18190 : READ_NODE_FIELD(name);
617 : }
618 518316 : else if (length == 4 && strncmp(token, "LIKE", 4) == 0)
619 : {
620 2050 : local_node->kind = AEXPR_LIKE;
621 2050 : READ_NODE_FIELD(name);
622 : }
623 516266 : else if (length == 5 && strncmp(token, "ILIKE", 5) == 0)
624 : {
625 144 : local_node->kind = AEXPR_ILIKE;
626 144 : READ_NODE_FIELD(name);
627 : }
628 516122 : else if (length == 7 && strncmp(token, "SIMILAR", 7) == 0)
629 : {
630 58 : local_node->kind = AEXPR_SIMILAR;
631 58 : READ_NODE_FIELD(name);
632 : }
633 516064 : else if (length == 7 && strncmp(token, "BETWEEN", 7) == 0)
634 : {
635 540 : local_node->kind = AEXPR_BETWEEN;
636 540 : READ_NODE_FIELD(name);
637 : }
638 515524 : else if (length == 11 && strncmp(token, "NOT_BETWEEN", 11) == 0)
639 : {
640 12 : local_node->kind = AEXPR_NOT_BETWEEN;
641 12 : READ_NODE_FIELD(name);
642 : }
643 515512 : else if (length == 11 && strncmp(token, "BETWEEN_SYM", 11) == 0)
644 : {
645 12 : local_node->kind = AEXPR_BETWEEN_SYM;
646 12 : READ_NODE_FIELD(name);
647 : }
648 515500 : else if (length == 15 && strncmp(token, "NOT_BETWEEN_SYM", 15) == 0)
649 : {
650 12 : local_node->kind = AEXPR_NOT_BETWEEN_SYM;
651 12 : READ_NODE_FIELD(name);
652 : }
653 515488 : else if (length == 5 && strncmp(token, ":name", 5) == 0)
654 : {
655 515488 : local_node->kind = AEXPR_OP;
656 515488 : local_node->name = nodeRead(NULL, 0);
657 : }
658 : else
659 0 : elog(ERROR, "unrecognized A_Expr kind: \"%.*s\"", length, token);
660 :
661 550170 : READ_NODE_FIELD(lexpr);
662 550170 : READ_NODE_FIELD(rexpr);
663 550170 : READ_LOCATION_FIELD(location);
664 :
665 550170 : READ_DONE();
666 : }
667 :
668 : static ExtensibleNode *
669 0 : _readExtensibleNode(void)
670 : {
671 : const ExtensibleNodeMethods *methods;
672 : ExtensibleNode *local_node;
673 : const char *extnodename;
674 :
675 : READ_TEMP_LOCALS();
676 :
677 0 : token = pg_strtok(&length); /* skip :extnodename */
678 0 : token = pg_strtok(&length); /* get extnodename */
679 :
680 0 : extnodename = nullable_string(token, length);
681 0 : if (!extnodename)
682 0 : elog(ERROR, "extnodename has to be supplied");
683 0 : methods = GetExtensibleNodeMethods(extnodename, false);
684 :
685 0 : local_node = (ExtensibleNode *) newNode(methods->node_size,
686 : T_ExtensibleNode);
687 0 : local_node->extnodename = extnodename;
688 :
689 : /* deserialize the private fields */
690 0 : methods->nodeRead(local_node);
691 :
692 0 : READ_DONE();
693 : }
694 :
695 :
696 : /*
697 : * parseNodeString
698 : *
699 : * Given a character string representing a node tree, parseNodeString creates
700 : * the internal node structure.
701 : *
702 : * The string to be read must already have been loaded into pg_strtok().
703 : */
704 : Node *
705 40248640 : parseNodeString(void)
706 : {
707 : READ_TEMP_LOCALS();
708 :
709 : /* Guard against stack overflow due to overly complex expressions */
710 40248640 : check_stack_depth();
711 :
712 40248640 : token = pg_strtok(&length);
713 :
714 : #define MATCH(tokname, namelen) \
715 : (length == namelen && memcmp(token, tokname, namelen) == 0)
716 :
717 : #include "readfuncs.switch.c"
718 :
719 0 : elog(ERROR, "badly formatted node string \"%.32s\"...", token);
720 : return NULL; /* keep compiler quiet */
721 : }
722 :
723 :
724 : /*
725 : * readDatum
726 : *
727 : * Given a string representation of a constant, recreate the appropriate
728 : * Datum. The string representation embeds length info, but not byValue,
729 : * so we must be told that.
730 : */
731 : Datum
732 2236076 : readDatum(bool typbyval)
733 : {
734 : Size length,
735 : i;
736 : int tokenLength;
737 : const char *token;
738 : Datum res;
739 : char *s;
740 :
741 : /*
742 : * read the actual length of the value
743 : */
744 2236076 : token = pg_strtok(&tokenLength);
745 2236076 : length = atoui(token);
746 :
747 2236076 : token = pg_strtok(&tokenLength); /* read the '[' */
748 2236076 : if (token == NULL || token[0] != '[')
749 0 : elog(ERROR, "expected \"[\" to start datum, but got \"%s\"; length = %zu",
750 : token ? token : "[NULL]", length);
751 :
752 2236076 : if (typbyval)
753 : {
754 1555252 : if (length > (Size) sizeof(Datum))
755 0 : elog(ERROR, "byval datum but length = %zu", length);
756 1555252 : res = (Datum) 0;
757 1555252 : s = (char *) (&res);
758 13997268 : for (i = 0; i < (Size) sizeof(Datum); i++)
759 : {
760 12442016 : token = pg_strtok(&tokenLength);
761 12442016 : s[i] = (char) atoi(token);
762 : }
763 : }
764 680824 : else if (length <= 0)
765 0 : res = (Datum) NULL;
766 : else
767 : {
768 680824 : s = (char *) palloc(length);
769 54198300 : for (i = 0; i < length; i++)
770 : {
771 53517476 : token = pg_strtok(&tokenLength);
772 53517476 : s[i] = (char) atoi(token);
773 : }
774 680824 : res = PointerGetDatum(s);
775 : }
776 :
777 2236076 : token = pg_strtok(&tokenLength); /* read the ']' */
778 2236076 : if (token == NULL || token[0] != ']')
779 0 : elog(ERROR, "expected \"]\" to end datum, but got \"%s\"; length = %zu",
780 : token ? token : "[NULL]", length);
781 :
782 2236076 : return res;
783 : }
784 :
785 : /*
786 : * common implementation for scalar-array-reading functions
787 : *
788 : * The data format is either "<>" for a NULL pointer (in which case numCols
789 : * is ignored) or "(item item item)" where the number of items must equal
790 : * numCols. The convfunc must be okay with stopping at whitespace or a
791 : * right parenthesis, since pg_strtok won't null-terminate the token.
792 : */
793 : #define READ_SCALAR_ARRAY(fnname, datatype, convfunc) \
794 : datatype * \
795 : fnname(int numCols) \
796 : { \
797 : datatype *vals; \
798 : READ_TEMP_LOCALS(); \
799 : token = pg_strtok(&length); \
800 : if (token == NULL) \
801 : elog(ERROR, "incomplete scalar array"); \
802 : if (length == 0) \
803 : return NULL; /* it was "<>", so return NULL pointer */ \
804 : if (length != 1 || token[0] != '(') \
805 : elog(ERROR, "unrecognized token: \"%.*s\"", length, token); \
806 : vals = (datatype *) palloc(numCols * sizeof(datatype)); \
807 : for (int i = 0; i < numCols; i++) \
808 : { \
809 : token = pg_strtok(&length); \
810 : if (token == NULL || token[0] == ')') \
811 : elog(ERROR, "incomplete scalar array"); \
812 : vals[i] = convfunc(token); \
813 : } \
814 : token = pg_strtok(&length); \
815 : if (token == NULL || length != 1 || token[0] != ')') \
816 : elog(ERROR, "incomplete scalar array"); \
817 : return vals; \
818 : }
819 :
820 : /*
821 : * Note: these functions are exported in nodes.h for possible use by
822 : * extensions, so don't mess too much with their names or API.
823 : */
824 365910 : READ_SCALAR_ARRAY(readAttrNumberCols, int16, atoi)
825 462848 : READ_SCALAR_ARRAY(readOidCols, Oid, atooid)
826 : /* outfuncs.c has writeIndexCols, but we don't yet need that here */
827 : /* READ_SCALAR_ARRAY(readIndexCols, Index, atoui) */
828 21400 : READ_SCALAR_ARRAY(readIntCols, int, atoi)
829 149258 : READ_SCALAR_ARRAY(readBoolCols, bool, strtobool)
|
