granicus.if.org Git - postgresql/blob - src/backend/nodes/copyfuncs.c

   1 /*-------------------------------------------------------------------------
   2  *
   3  * copyfuncs.c
   4  *        Copy functions for Postgres tree nodes.
   5  *
   6  * NOTE: we currently support copying all node types found in parse and
   7  * plan trees.  We do not support copying executor state trees; there
   8  * is no need for that, and no point in maintaining all the code that
   9  * would be needed.  We also do not support copying Path trees, mainly
  10  * because the circular linkages between RelOptInfo and Path nodes can't
  11  * be handled easily in a simple depth-first traversal.
  12  *
  13  *
  14  * Portions Copyright (c) 1996-2003, PostgreSQL Global Development Group
  15  * Portions Copyright (c) 1994, Regents of the University of California
  16  *
  17  * IDENTIFICATION
  18  *        $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.262 2003/08/04 02:39:59 momjian Exp $
  19  *
  20  *-------------------------------------------------------------------------
  21  */
  22
  23 #include "postgres.h"
  24
  25 #include "nodes/parsenodes.h"
  26 #include "nodes/plannodes.h"
  27 #include "nodes/relation.h"
  28 #include "utils/datum.h"
  29
  30
  31 /*
  32  * Macros to simplify copying of different kinds of fields.  Use these
  33  * wherever possible to reduce the chance for silly typos.      Note that these
  34  * hard-wire the convention that the local variables in a Copy routine are
  35  * named 'newnode' and 'from'.
  36  */
  37
  38 /* Copy a simple scalar field (int, float, bool, enum, etc) */
  39 #define COPY_SCALAR_FIELD(fldname) \
  40         (newnode->fldname = from->fldname)
  41
  42 /* Copy a field that is a pointer to some kind of Node or Node tree */
  43 #define COPY_NODE_FIELD(fldname) \
  44         (newnode->fldname = copyObject(from->fldname))
  45
  46 /* Copy a field that is a pointer to a list of integers */
  47 #define COPY_INTLIST_FIELD(fldname) \
  48         (newnode->fldname = listCopy(from->fldname))
  49
  50 /* Copy a field that is a pointer to a list of Oids */
  51 #define COPY_OIDLIST_FIELD(fldname) \
  52         (newnode->fldname = listCopy(from->fldname))
  53
  54 /* Copy a field that is a pointer to a Bitmapset */
  55 #define COPY_BITMAPSET_FIELD(fldname) \
  56         (newnode->fldname = bms_copy(from->fldname))
  57
  58 /* Copy a field that is a pointer to a C string, or perhaps NULL */
  59 #define COPY_STRING_FIELD(fldname) \
  60         (newnode->fldname = from->fldname ? pstrdup(from->fldname) : (char *) NULL)
  61
  62 /* Copy a field that is a pointer to a simple palloc'd object of size sz */
  63 #define COPY_POINTER_FIELD(fldname, sz) \
  64         do { \
  65                 Size    _size = (sz); \
  66                 newnode->fldname = palloc(_size); \
  67                 memcpy(newnode->fldname, from->fldname, _size); \
  68         } while (0)
  69
  70
  71 /*
  72  * listCopy
  73  *        This copy function only copies the "cons-cells" of the list, not the
  74  *        pointed-to objects.  (Use copyObject if you want a "deep" copy.)
  75  *
  76  *        We also use this function for copying lists of integers and Oids,
  77  *        which is notationally a bit ugly, but perfectly safe.
  78  *
  79  *        Note that copyObject will surely coredump if applied to a list
  80  *        of integers or Oids!
  81  */
  82 List *
  83 listCopy(List *list)
  84 {
  85         List       *newlist,
  86                            *oldl,
  87                            *newcell,
  88                            *prev;
  89
  90         /* rather ugly coding for speed... */
  91         if (list == NIL)
  92                 return NIL;
  93
  94         newcell = makeNode(List);
  95         newcell->elem = list->elem;
  96
  97         newlist = prev = newcell;
  98
  99         foreach(oldl, lnext(list))
 100         {
 101                 newcell = makeNode(List);
 102                 newcell->elem = oldl->elem;
 103                 prev->next = newcell;
 104                 prev = newcell;
 105         }
 106         prev->next = NIL;
 107
 108         return newlist;
 109 }
 110
 111 /* ****************************************************************
 112  *                                       plannodes.h copy functions
 113  * ****************************************************************
 114  */
 115
 116 /*
 117  * CopyPlanFields
 118  *
 119  *              This function copies the fields of the Plan node.  It is used by
 120  *              all the copy functions for classes which inherit from Plan.
 121  */
 122 static void
 123 CopyPlanFields(Plan *from, Plan *newnode)
 124 {
 125         COPY_SCALAR_FIELD(startup_cost);
 126         COPY_SCALAR_FIELD(total_cost);
 127         COPY_SCALAR_FIELD(plan_rows);
 128         COPY_SCALAR_FIELD(plan_width);
 129         COPY_NODE_FIELD(targetlist);
 130         COPY_NODE_FIELD(qual);
 131         COPY_NODE_FIELD(lefttree);
 132         COPY_NODE_FIELD(righttree);
 133         COPY_NODE_FIELD(initPlan);
 134         COPY_BITMAPSET_FIELD(extParam);
 135         COPY_BITMAPSET_FIELD(allParam);
 136         COPY_SCALAR_FIELD(nParamExec);
 137 }
 138
 139 /*
 140  * _copyPlan
 141  */
 142 static Plan *
 143 _copyPlan(Plan *from)
 144 {
 145         Plan       *newnode = makeNode(Plan);
 146
 147         /*
 148          * copy node superclass fields
 149          */
 150         CopyPlanFields(from, newnode);
 151
 152         return newnode;
 153 }
 154
 155
 156 /*
 157  * _copyResult
 158  */
 159 static Result *
 160 _copyResult(Result *from)
 161 {
 162         Result     *newnode = makeNode(Result);
 163
 164         /*
 165          * copy node superclass fields
 166          */
 167         CopyPlanFields((Plan *) from, (Plan *) newnode);
 168
 169         /*
 170          * copy remainder of node
 171          */
 172         COPY_NODE_FIELD(resconstantqual);
 173
 174         return newnode;
 175 }
 176
 177 /*
 178  * _copyAppend
 179  */
 180 static Append *
 181 _copyAppend(Append *from)
 182 {
 183         Append     *newnode = makeNode(Append);
 184
 185         /*
 186          * copy node superclass fields
 187          */
 188         CopyPlanFields((Plan *) from, (Plan *) newnode);
 189
 190         /*
 191          * copy remainder of node
 192          */
 193         COPY_NODE_FIELD(appendplans);
 194         COPY_SCALAR_FIELD(isTarget);
 195
 196         return newnode;
 197 }
 198
 199
 200 /*
 201  * CopyScanFields
 202  *
 203  *              This function copies the fields of the Scan node.  It is used by
 204  *              all the copy functions for classes which inherit from Scan.
 205  */
 206 static void
 207 CopyScanFields(Scan *from, Scan *newnode)
 208 {
 209         CopyPlanFields((Plan *) from, (Plan *) newnode);
 210
 211         COPY_SCALAR_FIELD(scanrelid);
 212 }
 213
 214 /*
 215  * _copyScan
 216  */
 217 static Scan *
 218 _copyScan(Scan *from)
 219 {
 220         Scan       *newnode = makeNode(Scan);
 221
 222         /*
 223          * copy node superclass fields
 224          */
 225         CopyScanFields((Scan *) from, (Scan *) newnode);
 226
 227         return newnode;
 228 }
 229
 230 /*
 231  * _copySeqScan
 232  */
 233 static SeqScan *
 234 _copySeqScan(SeqScan *from)
 235 {
 236         SeqScan    *newnode = makeNode(SeqScan);
 237
 238         /*
 239          * copy node superclass fields
 240          */
 241         CopyScanFields((Scan *) from, (Scan *) newnode);
 242
 243         return newnode;
 244 }
 245
 246 /*
 247  * _copyIndexScan
 248  */
 249 static IndexScan *
 250 _copyIndexScan(IndexScan *from)
 251 {
 252         IndexScan  *newnode = makeNode(IndexScan);
 253
 254         /*
 255          * copy node superclass fields
 256          */
 257         CopyScanFields((Scan *) from, (Scan *) newnode);
 258
 259         /*
 260          * copy remainder of node
 261          */
 262         COPY_OIDLIST_FIELD(indxid);
 263         COPY_NODE_FIELD(indxqual);
 264         COPY_NODE_FIELD(indxqualorig);
 265         COPY_SCALAR_FIELD(indxorderdir);
 266
 267         return newnode;
 268 }
 269
 270 /*
 271  * _copyTidScan
 272  */
 273 static TidScan *
 274 _copyTidScan(TidScan *from)
 275 {
 276         TidScan    *newnode = makeNode(TidScan);
 277
 278         /*
 279          * copy node superclass fields
 280          */
 281         CopyScanFields((Scan *) from, (Scan *) newnode);
 282
 283         /*
 284          * copy remainder of node
 285          */
 286         COPY_NODE_FIELD(tideval);
 287
 288         return newnode;
 289 }
 290
 291 /*
 292  * _copySubqueryScan
 293  */
 294 static SubqueryScan *
 295 _copySubqueryScan(SubqueryScan *from)
 296 {
 297         SubqueryScan *newnode = makeNode(SubqueryScan);
 298
 299         /*
 300          * copy node superclass fields
 301          */
 302         CopyScanFields((Scan *) from, (Scan *) newnode);
 303
 304         /*
 305          * copy remainder of node
 306          */
 307         COPY_NODE_FIELD(subplan);
 308
 309         return newnode;
 310 }
 311
 312 /*
 313  * _copyFunctionScan
 314  */
 315 static FunctionScan *
 316 _copyFunctionScan(FunctionScan *from)
 317 {
 318         FunctionScan *newnode = makeNode(FunctionScan);
 319
 320         /*
 321          * copy node superclass fields
 322          */
 323         CopyScanFields((Scan *) from, (Scan *) newnode);
 324
 325         return newnode;
 326 }
 327
 328 /*
 329  * CopyJoinFields
 330  *
 331  *              This function copies the fields of the Join node.  It is used by
 332  *              all the copy functions for classes which inherit from Join.
 333  */
 334 static void
 335 CopyJoinFields(Join *from, Join *newnode)
 336 {
 337         CopyPlanFields((Plan *) from, (Plan *) newnode);
 338
 339         COPY_SCALAR_FIELD(jointype);
 340         COPY_NODE_FIELD(joinqual);
 341 }
 342
 343
 344 /*
 345  * _copyJoin
 346  */
 347 static Join *
 348 _copyJoin(Join *from)
 349 {
 350         Join       *newnode = makeNode(Join);
 351
 352         /*
 353          * copy node superclass fields
 354          */
 355         CopyJoinFields(from, newnode);
 356
 357         return newnode;
 358 }
 359
 360
 361 /*
 362  * _copyNestLoop
 363  */
 364 static NestLoop *
 365 _copyNestLoop(NestLoop *from)
 366 {
 367         NestLoop   *newnode = makeNode(NestLoop);
 368
 369         /*
 370          * copy node superclass fields
 371          */
 372         CopyJoinFields((Join *) from, (Join *) newnode);
 373
 374         return newnode;
 375 }
 376
 377
 378 /*
 379  * _copyMergeJoin
 380  */
 381 static MergeJoin *
 382 _copyMergeJoin(MergeJoin *from)
 383 {
 384         MergeJoin  *newnode = makeNode(MergeJoin);
 385
 386         /*
 387          * copy node superclass fields
 388          */
 389         CopyJoinFields((Join *) from, (Join *) newnode);
 390
 391         /*
 392          * copy remainder of node
 393          */
 394         COPY_NODE_FIELD(mergeclauses);
 395
 396         return newnode;
 397 }
 398
 399 /*
 400  * _copyHashJoin
 401  */
 402 static HashJoin *
 403 _copyHashJoin(HashJoin *from)
 404 {
 405         HashJoin   *newnode = makeNode(HashJoin);
 406
 407         /*
 408          * copy node superclass fields
 409          */
 410         CopyJoinFields((Join *) from, (Join *) newnode);
 411
 412         /*
 413          * copy remainder of node
 414          */
 415         COPY_NODE_FIELD(hashclauses);
 416
 417         return newnode;
 418 }
 419
 420
 421 /*
 422  * _copyMaterial
 423  */
 424 static Material *
 425 _copyMaterial(Material *from)
 426 {
 427         Material   *newnode = makeNode(Material);
 428
 429         /*
 430          * copy node superclass fields
 431          */
 432         CopyPlanFields((Plan *) from, (Plan *) newnode);
 433
 434         return newnode;
 435 }
 436
 437
 438 /*
 439  * _copySort
 440  */
 441 static Sort *
 442 _copySort(Sort *from)
 443 {
 444         Sort       *newnode = makeNode(Sort);
 445
 446         /*
 447          * copy node superclass fields
 448          */
 449         CopyPlanFields((Plan *) from, (Plan *) newnode);
 450
 451         COPY_SCALAR_FIELD(numCols);
 452         COPY_POINTER_FIELD(sortColIdx, from->numCols * sizeof(AttrNumber));
 453         COPY_POINTER_FIELD(sortOperators, from->numCols * sizeof(Oid));
 454
 455         return newnode;
 456 }
 457
 458
 459 /*
 460  * _copyGroup
 461  */
 462 static Group *
 463 _copyGroup(Group *from)
 464 {
 465         Group      *newnode = makeNode(Group);
 466
 467         CopyPlanFields((Plan *) from, (Plan *) newnode);
 468
 469         COPY_SCALAR_FIELD(numCols);
 470         COPY_POINTER_FIELD(grpColIdx, from->numCols * sizeof(AttrNumber));
 471
 472         return newnode;
 473 }
 474
 475 /*
 476  * _copyAgg
 477  */
 478 static Agg *
 479 _copyAgg(Agg *from)
 480 {
 481         Agg                *newnode = makeNode(Agg);
 482
 483         CopyPlanFields((Plan *) from, (Plan *) newnode);
 484
 485         COPY_SCALAR_FIELD(aggstrategy);
 486         COPY_SCALAR_FIELD(numCols);
 487         if (from->numCols > 0)
 488                 COPY_POINTER_FIELD(grpColIdx, from->numCols * sizeof(AttrNumber));
 489         COPY_SCALAR_FIELD(numGroups);
 490
 491         return newnode;
 492 }
 493
 494 /*
 495  * _copyUnique
 496  */
 497 static Unique *
 498 _copyUnique(Unique *from)
 499 {
 500         Unique     *newnode = makeNode(Unique);
 501
 502         /*
 503          * copy node superclass fields
 504          */
 505         CopyPlanFields((Plan *) from, (Plan *) newnode);
 506
 507         /*
 508          * copy remainder of node
 509          */
 510         COPY_SCALAR_FIELD(numCols);
 511         COPY_POINTER_FIELD(uniqColIdx, from->numCols * sizeof(AttrNumber));
 512
 513         return newnode;
 514 }
 515
 516 /*
 517  * _copyHash
 518  */
 519 static Hash *
 520 _copyHash(Hash *from)
 521 {
 522         Hash       *newnode = makeNode(Hash);
 523
 524         /*
 525          * copy node superclass fields
 526          */
 527         CopyPlanFields((Plan *) from, (Plan *) newnode);
 528
 529         /*
 530          * copy remainder of node
 531          */
 532         COPY_NODE_FIELD(hashkeys);
 533
 534         return newnode;
 535 }
 536
 537 /*
 538  * _copySetOp
 539  */
 540 static SetOp *
 541 _copySetOp(SetOp *from)
 542 {
 543         SetOp      *newnode = makeNode(SetOp);
 544
 545         /*
 546          * copy node superclass fields
 547          */
 548         CopyPlanFields((Plan *) from, (Plan *) newnode);
 549
 550         /*
 551          * copy remainder of node
 552          */
 553         COPY_SCALAR_FIELD(cmd);
 554         COPY_SCALAR_FIELD(numCols);
 555         COPY_POINTER_FIELD(dupColIdx, from->numCols * sizeof(AttrNumber));
 556         COPY_SCALAR_FIELD(flagColIdx);
 557
 558         return newnode;
 559 }
 560
 561 /*
 562  * _copyLimit
 563  */
 564 static Limit *
 565 _copyLimit(Limit *from)
 566 {
 567         Limit      *newnode = makeNode(Limit);
 568
 569         /*
 570          * copy node superclass fields
 571          */
 572         CopyPlanFields((Plan *) from, (Plan *) newnode);
 573
 574         /*
 575          * copy remainder of node
 576          */
 577         COPY_NODE_FIELD(limitOffset);
 578         COPY_NODE_FIELD(limitCount);
 579
 580         return newnode;
 581 }
 582
 583 /* ****************************************************************
 584  *                                         primnodes.h copy functions
 585  * ****************************************************************
 586  */
 587
 588 /*
 589  * _copyResdom
 590  */
 591 static Resdom *
 592 _copyResdom(Resdom *from)
 593 {
 594         Resdom     *newnode = makeNode(Resdom);
 595
 596         COPY_SCALAR_FIELD(resno);
 597         COPY_SCALAR_FIELD(restype);
 598         COPY_SCALAR_FIELD(restypmod);
 599         COPY_STRING_FIELD(resname);
 600         COPY_SCALAR_FIELD(ressortgroupref);
 601         COPY_SCALAR_FIELD(resorigtbl);
 602         COPY_SCALAR_FIELD(resorigcol);
 603         COPY_SCALAR_FIELD(resjunk);
 604
 605         return newnode;
 606 }
 607
 608 /*
 609  * _copyAlias
 610  */
 611 static Alias *
 612 _copyAlias(Alias *from)
 613 {
 614         Alias      *newnode = makeNode(Alias);
 615
 616         COPY_STRING_FIELD(aliasname);
 617         COPY_NODE_FIELD(colnames);
 618
 619         return newnode;
 620 }
 621
 622 /*
 623  * _copyRangeVar
 624  */
 625 static RangeVar *
 626 _copyRangeVar(RangeVar *from)
 627 {
 628         RangeVar   *newnode = makeNode(RangeVar);
 629
 630         COPY_STRING_FIELD(catalogname);
 631         COPY_STRING_FIELD(schemaname);
 632         COPY_STRING_FIELD(relname);
 633         COPY_SCALAR_FIELD(inhOpt);
 634         COPY_SCALAR_FIELD(istemp);
 635         COPY_NODE_FIELD(alias);
 636
 637         return newnode;
 638 }
 639
 640 /*
 641  * We don't need a _copyExpr because Expr is an abstract supertype which
 642  * should never actually get instantiated.      Also, since it has no common
 643  * fields except NodeTag, there's no need for a helper routine to factor
 644  * out copying the common fields...
 645  */
 646
 647 /*
 648  * _copyVar
 649  */
 650 static Var *
 651 _copyVar(Var *from)
 652 {
 653         Var                *newnode = makeNode(Var);
 654
 655         COPY_SCALAR_FIELD(varno);
 656         COPY_SCALAR_FIELD(varattno);
 657         COPY_SCALAR_FIELD(vartype);
 658         COPY_SCALAR_FIELD(vartypmod);
 659         COPY_SCALAR_FIELD(varlevelsup);
 660         COPY_SCALAR_FIELD(varnoold);
 661         COPY_SCALAR_FIELD(varoattno);
 662
 663         return newnode;
 664 }
 665
 666 /*
 667  * _copyConst
 668  */
 669 static Const *
 670 _copyConst(Const *from)
 671 {
 672         Const      *newnode = makeNode(Const);
 673
 674         COPY_SCALAR_FIELD(consttype);
 675         COPY_SCALAR_FIELD(constlen);
 676
 677         if (from->constbyval || from->constisnull)
 678         {
 679                 /*
 680                  * passed by value so just copy the datum. Also, don't try to copy
 681                  * struct when value is null!
 682                  */
 683                 newnode->constvalue = from->constvalue;
 684         }
 685         else
 686         {
 687                 /*
 688                  * passed by reference.  We need a palloc'd copy.
 689                  */
 690                 newnode->constvalue = datumCopy(from->constvalue,
 691                                                                                 from->constbyval,
 692                                                                                 from->constlen);
 693         }
 694
 695         COPY_SCALAR_FIELD(constisnull);
 696         COPY_SCALAR_FIELD(constbyval);
 697
 698         return newnode;
 699 }
 700
 701 /*
 702  * _copyParam
 703  */
 704 static Param *
 705 _copyParam(Param *from)
 706 {
 707         Param      *newnode = makeNode(Param);
 708
 709         COPY_SCALAR_FIELD(paramkind);
 710         COPY_SCALAR_FIELD(paramid);
 711         COPY_STRING_FIELD(paramname);
 712         COPY_SCALAR_FIELD(paramtype);
 713
 714         return newnode;
 715 }
 716
 717 /*
 718  * _copyAggref
 719  */
 720 static Aggref *
 721 _copyAggref(Aggref *from)
 722 {
 723         Aggref     *newnode = makeNode(Aggref);
 724
 725         COPY_SCALAR_FIELD(aggfnoid);
 726         COPY_SCALAR_FIELD(aggtype);
 727         COPY_NODE_FIELD(target);
 728         COPY_SCALAR_FIELD(agglevelsup);
 729         COPY_SCALAR_FIELD(aggstar);
 730         COPY_SCALAR_FIELD(aggdistinct);
 731
 732         return newnode;
 733 }
 734
 735 /*
 736  * _copyArrayRef
 737  */
 738 static ArrayRef *
 739 _copyArrayRef(ArrayRef *from)
 740 {
 741         ArrayRef   *newnode = makeNode(ArrayRef);
 742
 743         COPY_SCALAR_FIELD(refrestype);
 744         COPY_SCALAR_FIELD(refarraytype);
 745         COPY_SCALAR_FIELD(refelemtype);
 746         COPY_NODE_FIELD(refupperindexpr);
 747         COPY_NODE_FIELD(reflowerindexpr);
 748         COPY_NODE_FIELD(refexpr);
 749         COPY_NODE_FIELD(refassgnexpr);
 750
 751         return newnode;
 752 }
 753
 754 /*
 755  * _copyFuncExpr
 756  */
 757 static FuncExpr *
 758 _copyFuncExpr(FuncExpr * from)
 759 {
 760         FuncExpr   *newnode = makeNode(FuncExpr);
 761
 762         COPY_SCALAR_FIELD(funcid);
 763         COPY_SCALAR_FIELD(funcresulttype);
 764         COPY_SCALAR_FIELD(funcretset);
 765         COPY_SCALAR_FIELD(funcformat);
 766         COPY_NODE_FIELD(args);
 767
 768         return newnode;
 769 }
 770
 771 /*
 772  * _copyOpExpr
 773  */
 774 static OpExpr *
 775 _copyOpExpr(OpExpr * from)
 776 {
 777         OpExpr     *newnode = makeNode(OpExpr);
 778
 779         COPY_SCALAR_FIELD(opno);
 780         COPY_SCALAR_FIELD(opfuncid);
 781         COPY_SCALAR_FIELD(opresulttype);
 782         COPY_SCALAR_FIELD(opretset);
 783         COPY_NODE_FIELD(args);
 784
 785         return newnode;
 786 }
 787
 788 /*
 789  * _copyDistinctExpr (same as OpExpr)
 790  */
 791 static DistinctExpr *
 792 _copyDistinctExpr(DistinctExpr * from)
 793 {
 794         DistinctExpr *newnode = makeNode(DistinctExpr);
 795
 796         COPY_SCALAR_FIELD(opno);
 797         COPY_SCALAR_FIELD(opfuncid);
 798         COPY_SCALAR_FIELD(opresulttype);
 799         COPY_SCALAR_FIELD(opretset);
 800         COPY_NODE_FIELD(args);
 801
 802         return newnode;
 803 }
 804
 805 /*
 806  * _copyScalarArrayOpExpr
 807  */
 808 static ScalarArrayOpExpr *
 809 _copyScalarArrayOpExpr(ScalarArrayOpExpr * from)
 810 {
 811         ScalarArrayOpExpr *newnode = makeNode(ScalarArrayOpExpr);
 812
 813         COPY_SCALAR_FIELD(opno);
 814         COPY_SCALAR_FIELD(opfuncid);
 815         COPY_SCALAR_FIELD(useOr);
 816         COPY_NODE_FIELD(args);
 817
 818         return newnode;
 819 }
 820
 821 /*
 822  * _copyBoolExpr
 823  */
 824 static BoolExpr *
 825 _copyBoolExpr(BoolExpr * from)
 826 {
 827         BoolExpr   *newnode = makeNode(BoolExpr);
 828
 829         COPY_SCALAR_FIELD(boolop);
 830         COPY_NODE_FIELD(args);
 831
 832         return newnode;
 833 }
 834
 835 /*
 836  * _copySubLink
 837  */
 838 static SubLink *
 839 _copySubLink(SubLink *from)
 840 {
 841         SubLink    *newnode = makeNode(SubLink);
 842
 843         COPY_SCALAR_FIELD(subLinkType);
 844         COPY_SCALAR_FIELD(useOr);
 845         COPY_NODE_FIELD(lefthand);
 846         COPY_NODE_FIELD(operName);
 847         COPY_OIDLIST_FIELD(operOids);
 848         COPY_NODE_FIELD(subselect);
 849
 850         return newnode;
 851 }
 852
 853 /*
 854  * _copySubPlan
 855  */
 856 static SubPlan *
 857 _copySubPlan(SubPlan *from)
 858 {
 859         SubPlan    *newnode = makeNode(SubPlan);
 860
 861         COPY_SCALAR_FIELD(subLinkType);
 862         COPY_SCALAR_FIELD(useOr);
 863         COPY_NODE_FIELD(exprs);
 864         COPY_INTLIST_FIELD(paramIds);
 865         COPY_NODE_FIELD(plan);
 866         COPY_SCALAR_FIELD(plan_id);
 867         COPY_NODE_FIELD(rtable);
 868         COPY_SCALAR_FIELD(useHashTable);
 869         COPY_SCALAR_FIELD(unknownEqFalse);
 870         COPY_INTLIST_FIELD(setParam);
 871         COPY_INTLIST_FIELD(parParam);
 872         COPY_NODE_FIELD(args);
 873
 874         return newnode;
 875 }
 876
 877 /*
 878  * _copyFieldSelect
 879  */
 880 static FieldSelect *
 881 _copyFieldSelect(FieldSelect *from)
 882 {
 883         FieldSelect *newnode = makeNode(FieldSelect);
 884
 885         COPY_NODE_FIELD(arg);
 886         COPY_SCALAR_FIELD(fieldnum);
 887         COPY_SCALAR_FIELD(resulttype);
 888         COPY_SCALAR_FIELD(resulttypmod);
 889
 890         return newnode;
 891 }
 892
 893 /*
 894  * _copyRelabelType
 895  */
 896 static RelabelType *
 897 _copyRelabelType(RelabelType *from)
 898 {
 899         RelabelType *newnode = makeNode(RelabelType);
 900
 901         COPY_NODE_FIELD(arg);
 902         COPY_SCALAR_FIELD(resulttype);
 903         COPY_SCALAR_FIELD(resulttypmod);
 904         COPY_SCALAR_FIELD(relabelformat);
 905
 906         return newnode;
 907 }
 908
 909 /*
 910  * _copyCaseExpr
 911  */
 912 static CaseExpr *
 913 _copyCaseExpr(CaseExpr *from)
 914 {
 915         CaseExpr   *newnode = makeNode(CaseExpr);
 916
 917         COPY_SCALAR_FIELD(casetype);
 918         COPY_NODE_FIELD(arg);
 919         COPY_NODE_FIELD(args);
 920         COPY_NODE_FIELD(defresult);
 921
 922         return newnode;
 923 }
 924
 925 /*
 926  * _copyCaseWhen
 927  */
 928 static CaseWhen *
 929 _copyCaseWhen(CaseWhen *from)
 930 {
 931         CaseWhen   *newnode = makeNode(CaseWhen);
 932
 933         COPY_NODE_FIELD(expr);
 934         COPY_NODE_FIELD(result);
 935
 936         return newnode;
 937 }
 938
 939 /*
 940  * _copyArrayExpr
 941  */
 942 static ArrayExpr *
 943 _copyArrayExpr(ArrayExpr * from)
 944 {
 945         ArrayExpr  *newnode = makeNode(ArrayExpr);
 946
 947         COPY_SCALAR_FIELD(array_typeid);
 948         COPY_SCALAR_FIELD(element_typeid);
 949         COPY_NODE_FIELD(elements);
 950         COPY_SCALAR_FIELD(ndims);
 951
 952         return newnode;
 953 }
 954
 955 /*
 956  * _copyCoalesceExpr
 957  */
 958 static CoalesceExpr *
 959 _copyCoalesceExpr(CoalesceExpr * from)
 960 {
 961         CoalesceExpr *newnode = makeNode(CoalesceExpr);
 962
 963         COPY_SCALAR_FIELD(coalescetype);
 964         COPY_NODE_FIELD(args);
 965
 966         return newnode;
 967 }
 968
 969 /*
 970  * _copyNullIfExpr (same as OpExpr)
 971  */
 972 static NullIfExpr *
 973 _copyNullIfExpr(NullIfExpr * from)
 974 {
 975         NullIfExpr *newnode = makeNode(NullIfExpr);
 976
 977         COPY_SCALAR_FIELD(opno);
 978         COPY_SCALAR_FIELD(opfuncid);
 979         COPY_SCALAR_FIELD(opresulttype);
 980         COPY_SCALAR_FIELD(opretset);
 981         COPY_NODE_FIELD(args);
 982
 983         return newnode;
 984 }
 985
 986 /*
 987  * _copyNullTest
 988  */
 989 static NullTest *
 990 _copyNullTest(NullTest *from)
 991 {
 992         NullTest   *newnode = makeNode(NullTest);
 993
 994         COPY_NODE_FIELD(arg);
 995         COPY_SCALAR_FIELD(nulltesttype);
 996
 997         return newnode;
 998 }
 999
1000 /*
1001  * _copyBooleanTest
1002  */
1003 static BooleanTest *
1004 _copyBooleanTest(BooleanTest *from)
1005 {
1006         BooleanTest *newnode = makeNode(BooleanTest);
1007
1008         COPY_NODE_FIELD(arg);
1009         COPY_SCALAR_FIELD(booltesttype);
1010
1011         return newnode;
1012 }
1013
1014 /*
1015  * _copyCoerceToDomain
1016  */
1017 static CoerceToDomain *
1018 _copyCoerceToDomain(CoerceToDomain * from)
1019 {
1020         CoerceToDomain *newnode = makeNode(CoerceToDomain);
1021
1022         COPY_NODE_FIELD(arg);
1023         COPY_SCALAR_FIELD(resulttype);
1024         COPY_SCALAR_FIELD(resulttypmod);
1025         COPY_SCALAR_FIELD(coercionformat);
1026
1027         return newnode;
1028 }
1029
1030 /*
1031  * _copyCoerceToDomainValue
1032  */
1033 static CoerceToDomainValue *
1034 _copyCoerceToDomainValue(CoerceToDomainValue * from)
1035 {
1036         CoerceToDomainValue *newnode = makeNode(CoerceToDomainValue);
1037
1038         COPY_SCALAR_FIELD(typeId);
1039         COPY_SCALAR_FIELD(typeMod);
1040
1041         return newnode;
1042 }
1043
1044 /*
1045  * _copySetToDefault
1046  */
1047 static SetToDefault *
1048 _copySetToDefault(SetToDefault * from)
1049 {
1050         SetToDefault *newnode = makeNode(SetToDefault);
1051
1052         COPY_SCALAR_FIELD(typeId);
1053         COPY_SCALAR_FIELD(typeMod);
1054
1055         return newnode;
1056 }
1057
1058 /*
1059  * _copyTargetEntry
1060  */
1061 static TargetEntry *
1062 _copyTargetEntry(TargetEntry *from)
1063 {
1064         TargetEntry *newnode = makeNode(TargetEntry);
1065
1066         COPY_NODE_FIELD(resdom);
1067         COPY_NODE_FIELD(expr);
1068
1069         return newnode;
1070 }
1071
1072 /*
1073  * _copyRangeTblRef
1074  */
1075 static RangeTblRef *
1076 _copyRangeTblRef(RangeTblRef *from)
1077 {
1078         RangeTblRef *newnode = makeNode(RangeTblRef);
1079
1080         COPY_SCALAR_FIELD(rtindex);
1081
1082         return newnode;
1083 }
1084
1085 /*
1086  * _copyJoinExpr
1087  */
1088 static JoinExpr *
1089 _copyJoinExpr(JoinExpr *from)
1090 {
1091         JoinExpr   *newnode = makeNode(JoinExpr);
1092
1093         COPY_SCALAR_FIELD(jointype);
1094         COPY_SCALAR_FIELD(isNatural);
1095         COPY_NODE_FIELD(larg);
1096         COPY_NODE_FIELD(rarg);
1097         COPY_NODE_FIELD(using);
1098         COPY_NODE_FIELD(quals);
1099         COPY_NODE_FIELD(alias);
1100         COPY_SCALAR_FIELD(rtindex);
1101
1102         return newnode;
1103 }
1104
1105 /*
1106  * _copyFromExpr
1107  */
1108 static FromExpr *
1109 _copyFromExpr(FromExpr *from)
1110 {
1111         FromExpr   *newnode = makeNode(FromExpr);
1112
1113         COPY_NODE_FIELD(fromlist);
1114         COPY_NODE_FIELD(quals);
1115
1116         return newnode;
1117 }
1118
1119 /* ****************************************************************
1120  *                                              relation.h copy functions
1121  *
1122  * We don't support copying RelOptInfo, IndexOptInfo, or Path nodes.
1123  * There are some subsidiary structs that are useful to copy, though.
1124  * ****************************************************************
1125  */
1126
1127 /*
1128  * _copyPathKeyItem
1129  */
1130 static PathKeyItem *
1131 _copyPathKeyItem(PathKeyItem *from)
1132 {
1133         PathKeyItem *newnode = makeNode(PathKeyItem);
1134
1135         COPY_NODE_FIELD(key);
1136         COPY_SCALAR_FIELD(sortop);
1137
1138         return newnode;
1139 }
1140
1141 /*
1142  * _copyRestrictInfo
1143  */
1144 static RestrictInfo *
1145 _copyRestrictInfo(RestrictInfo *from)
1146 {
1147         RestrictInfo *newnode = makeNode(RestrictInfo);
1148
1149         COPY_NODE_FIELD(clause);
1150         COPY_SCALAR_FIELD(ispusheddown);
1151         COPY_NODE_FIELD(subclauseindices);      /* XXX probably bad */
1152         COPY_SCALAR_FIELD(eval_cost);
1153         COPY_SCALAR_FIELD(this_selec);
1154         COPY_BITMAPSET_FIELD(left_relids);
1155         COPY_BITMAPSET_FIELD(right_relids);
1156         COPY_SCALAR_FIELD(mergejoinoperator);
1157         COPY_SCALAR_FIELD(left_sortop);
1158         COPY_SCALAR_FIELD(right_sortop);
1159
1160         /*
1161          * Do not copy pathkeys, since they'd not be canonical in a copied
1162          * query
1163          */
1164         newnode->left_pathkey = NIL;
1165         newnode->right_pathkey = NIL;
1166
1167         COPY_SCALAR_FIELD(left_mergescansel);
1168         COPY_SCALAR_FIELD(right_mergescansel);
1169         COPY_SCALAR_FIELD(hashjoinoperator);
1170         COPY_SCALAR_FIELD(left_bucketsize);
1171         COPY_SCALAR_FIELD(right_bucketsize);
1172
1173         return newnode;
1174 }
1175
1176 /*
1177  * _copyJoinInfo
1178  */
1179 static JoinInfo *
1180 _copyJoinInfo(JoinInfo *from)
1181 {
1182         JoinInfo   *newnode = makeNode(JoinInfo);
1183
1184         COPY_BITMAPSET_FIELD(unjoined_relids);
1185         COPY_NODE_FIELD(jinfo_restrictinfo);
1186
1187         return newnode;
1188 }
1189
1190 /*
1191  * _copyInClauseInfo
1192  */
1193 static InClauseInfo *
1194 _copyInClauseInfo(InClauseInfo * from)
1195 {
1196         InClauseInfo *newnode = makeNode(InClauseInfo);
1197
1198         COPY_BITMAPSET_FIELD(lefthand);
1199         COPY_BITMAPSET_FIELD(righthand);
1200         COPY_NODE_FIELD(sub_targetlist);
1201
1202         return newnode;
1203 }
1204
1205 /* ****************************************************************
1206  *                                      parsenodes.h copy functions
1207  * ****************************************************************
1208  */
1209
1210 static RangeTblEntry *
1211 _copyRangeTblEntry(RangeTblEntry *from)
1212 {
1213         RangeTblEntry *newnode = makeNode(RangeTblEntry);
1214
1215         COPY_SCALAR_FIELD(rtekind);
1216         COPY_SCALAR_FIELD(relid);
1217         COPY_NODE_FIELD(subquery);
1218         COPY_NODE_FIELD(funcexpr);
1219         COPY_NODE_FIELD(coldeflist);
1220         COPY_SCALAR_FIELD(jointype);
1221         COPY_NODE_FIELD(joinaliasvars);
1222         COPY_NODE_FIELD(alias);
1223         COPY_NODE_FIELD(eref);
1224         COPY_SCALAR_FIELD(inh);
1225         COPY_SCALAR_FIELD(inFromCl);
1226         COPY_SCALAR_FIELD(checkForRead);
1227         COPY_SCALAR_FIELD(checkForWrite);
1228         COPY_SCALAR_FIELD(checkAsUser);
1229
1230         return newnode;
1231 }
1232
1233 static FkConstraint *
1234 _copyFkConstraint(FkConstraint *from)
1235 {
1236         FkConstraint *newnode = makeNode(FkConstraint);
1237
1238         COPY_STRING_FIELD(constr_name);
1239         COPY_NODE_FIELD(pktable);
1240         COPY_NODE_FIELD(fk_attrs);
1241         COPY_NODE_FIELD(pk_attrs);
1242         COPY_SCALAR_FIELD(fk_matchtype);
1243         COPY_SCALAR_FIELD(fk_upd_action);
1244         COPY_SCALAR_FIELD(fk_del_action);
1245         COPY_SCALAR_FIELD(deferrable);
1246         COPY_SCALAR_FIELD(initdeferred);
1247         COPY_SCALAR_FIELD(skip_validation);
1248
1249         return newnode;
1250 }
1251
1252 static SortClause *
1253 _copySortClause(SortClause *from)
1254 {
1255         SortClause *newnode = makeNode(SortClause);
1256
1257         COPY_SCALAR_FIELD(tleSortGroupRef);
1258         COPY_SCALAR_FIELD(sortop);
1259
1260         return newnode;
1261 }
1262
1263 static GroupClause *
1264 _copyGroupClause(GroupClause *from)
1265 {
1266         GroupClause *newnode = makeNode(GroupClause);
1267
1268         COPY_SCALAR_FIELD(tleSortGroupRef);
1269         COPY_SCALAR_FIELD(sortop);
1270
1271         return newnode;
1272 }
1273
1274 static A_Expr *
1275 _copyAExpr(A_Expr *from)
1276 {
1277         A_Expr     *newnode = makeNode(A_Expr);
1278
1279         COPY_SCALAR_FIELD(kind);
1280         COPY_NODE_FIELD(name);
1281         COPY_NODE_FIELD(lexpr);
1282         COPY_NODE_FIELD(rexpr);
1283
1284         return newnode;
1285 }
1286
1287 static ColumnRef *
1288 _copyColumnRef(ColumnRef *from)
1289 {
1290         ColumnRef  *newnode = makeNode(ColumnRef);
1291
1292         COPY_NODE_FIELD(fields);
1293         COPY_NODE_FIELD(indirection);
1294
1295         return newnode;
1296 }
1297
1298 static ParamRef *
1299 _copyParamRef(ParamRef *from)
1300 {
1301         ParamRef   *newnode = makeNode(ParamRef);
1302
1303         COPY_SCALAR_FIELD(number);
1304         COPY_NODE_FIELD(fields);
1305         COPY_NODE_FIELD(indirection);
1306
1307         return newnode;
1308 }
1309
1310 static A_Const *
1311 _copyAConst(A_Const *from)
1312 {
1313         A_Const    *newnode = makeNode(A_Const);
1314
1315         /* This part must duplicate _copyValue */
1316         COPY_SCALAR_FIELD(val.type);
1317         switch (from->val.type)
1318         {
1319                 case T_Integer:
1320                         COPY_SCALAR_FIELD(val.val.ival);
1321                         break;
1322                 case T_Float:
1323                 case T_String:
1324                 case T_BitString:
1325                         COPY_STRING_FIELD(val.val.str);
1326                         break;
1327                 case T_Null:
1328                         /* nothing to do */
1329                         break;
1330                 default:
1331                         elog(ERROR, "unrecognized node type: %d",
1332                                  (int) from->val.type);
1333                         break;
1334         }
1335
1336         COPY_NODE_FIELD(typename);
1337
1338         return newnode;
1339 }
1340
1341 static FuncCall *
1342 _copyFuncCall(FuncCall *from)
1343 {
1344         FuncCall   *newnode = makeNode(FuncCall);
1345
1346         COPY_NODE_FIELD(funcname);
1347         COPY_NODE_FIELD(args);
1348         COPY_SCALAR_FIELD(agg_star);
1349         COPY_SCALAR_FIELD(agg_distinct);
1350
1351         return newnode;
1352 }
1353
1354 static A_Indices *
1355 _copyAIndices(A_Indices *from)
1356 {
1357         A_Indices  *newnode = makeNode(A_Indices);
1358
1359         COPY_NODE_FIELD(lidx);
1360         COPY_NODE_FIELD(uidx);
1361
1362         return newnode;
1363 }
1364
1365 static ExprFieldSelect *
1366 _copyExprFieldSelect(ExprFieldSelect *from)
1367 {
1368         ExprFieldSelect *newnode = makeNode(ExprFieldSelect);
1369
1370         COPY_NODE_FIELD(arg);
1371         COPY_NODE_FIELD(fields);
1372         COPY_NODE_FIELD(indirection);
1373
1374         return newnode;
1375 }
1376
1377 static ResTarget *
1378 _copyResTarget(ResTarget *from)
1379 {
1380         ResTarget  *newnode = makeNode(ResTarget);
1381
1382         COPY_STRING_FIELD(name);
1383         COPY_NODE_FIELD(indirection);
1384         COPY_NODE_FIELD(val);
1385
1386         return newnode;
1387 }
1388
1389 static TypeName *
1390 _copyTypeName(TypeName *from)
1391 {
1392         TypeName   *newnode = makeNode(TypeName);
1393
1394         COPY_NODE_FIELD(names);
1395         COPY_SCALAR_FIELD(typeid);
1396         COPY_SCALAR_FIELD(timezone);
1397         COPY_SCALAR_FIELD(setof);
1398         COPY_SCALAR_FIELD(pct_type);
1399         COPY_SCALAR_FIELD(typmod);
1400         COPY_NODE_FIELD(arrayBounds);
1401
1402         return newnode;
1403 }
1404
1405 static SortGroupBy *
1406 _copySortGroupBy(SortGroupBy *from)
1407 {
1408         SortGroupBy *newnode = makeNode(SortGroupBy);
1409
1410         COPY_NODE_FIELD(useOp);
1411         COPY_NODE_FIELD(node);
1412
1413         return newnode;
1414 }
1415
1416 static RangeSubselect *
1417 _copyRangeSubselect(RangeSubselect *from)
1418 {
1419         RangeSubselect *newnode = makeNode(RangeSubselect);
1420
1421         COPY_NODE_FIELD(subquery);
1422         COPY_NODE_FIELD(alias);
1423
1424         return newnode;
1425 }
1426
1427 static RangeFunction *
1428 _copyRangeFunction(RangeFunction *from)
1429 {
1430         RangeFunction *newnode = makeNode(RangeFunction);
1431
1432         COPY_NODE_FIELD(funccallnode);
1433         COPY_NODE_FIELD(alias);
1434         COPY_NODE_FIELD(coldeflist);
1435
1436         return newnode;
1437 }
1438
1439 static TypeCast *
1440 _copyTypeCast(TypeCast *from)
1441 {
1442         TypeCast   *newnode = makeNode(TypeCast);
1443
1444         COPY_NODE_FIELD(arg);
1445         COPY_NODE_FIELD(typename);
1446
1447         return newnode;
1448 }
1449
1450 static IndexElem *
1451 _copyIndexElem(IndexElem *from)
1452 {
1453         IndexElem  *newnode = makeNode(IndexElem);
1454
1455         COPY_STRING_FIELD(name);
1456         COPY_NODE_FIELD(expr);
1457         COPY_NODE_FIELD(opclass);
1458
1459         return newnode;
1460 }
1461
1462 static ColumnDef *
1463 _copyColumnDef(ColumnDef *from)
1464 {
1465         ColumnDef  *newnode = makeNode(ColumnDef);
1466
1467         COPY_STRING_FIELD(colname);
1468         COPY_NODE_FIELD(typename);
1469         COPY_SCALAR_FIELD(inhcount);
1470         COPY_SCALAR_FIELD(is_local);
1471         COPY_SCALAR_FIELD(is_not_null);
1472         COPY_NODE_FIELD(raw_default);
1473         COPY_STRING_FIELD(cooked_default);
1474         COPY_NODE_FIELD(constraints);
1475         COPY_NODE_FIELD(support);
1476
1477         return newnode;
1478 }
1479
1480 static Constraint *
1481 _copyConstraint(Constraint *from)
1482 {
1483         Constraint *newnode = makeNode(Constraint);
1484
1485         COPY_SCALAR_FIELD(contype);
1486         COPY_STRING_FIELD(name);
1487         COPY_NODE_FIELD(raw_expr);
1488         COPY_STRING_FIELD(cooked_expr);
1489         COPY_NODE_FIELD(keys);
1490
1491         return newnode;
1492 }
1493
1494 static DefElem *
1495 _copyDefElem(DefElem *from)
1496 {
1497         DefElem    *newnode = makeNode(DefElem);
1498
1499         COPY_STRING_FIELD(defname);
1500         COPY_NODE_FIELD(arg);
1501
1502         return newnode;
1503 }
1504
1505 static Query *
1506 _copyQuery(Query *from)
1507 {
1508         Query      *newnode = makeNode(Query);
1509
1510         COPY_SCALAR_FIELD(commandType);
1511         COPY_SCALAR_FIELD(querySource);
1512         COPY_SCALAR_FIELD(canSetTag);
1513         COPY_NODE_FIELD(utilityStmt);
1514         COPY_SCALAR_FIELD(resultRelation);
1515         COPY_NODE_FIELD(into);
1516         COPY_SCALAR_FIELD(hasAggs);
1517         COPY_SCALAR_FIELD(hasSubLinks);
1518         COPY_NODE_FIELD(rtable);
1519         COPY_NODE_FIELD(jointree);
1520         COPY_INTLIST_FIELD(rowMarks);
1521         COPY_NODE_FIELD(targetList);
1522         COPY_NODE_FIELD(groupClause);
1523         COPY_NODE_FIELD(havingQual);
1524         COPY_NODE_FIELD(distinctClause);
1525         COPY_NODE_FIELD(sortClause);
1526         COPY_NODE_FIELD(limitOffset);
1527         COPY_NODE_FIELD(limitCount);
1528         COPY_NODE_FIELD(setOperations);
1529         COPY_INTLIST_FIELD(resultRelations);
1530         COPY_NODE_FIELD(in_info_list);
1531         COPY_SCALAR_FIELD(hasJoinRTEs);
1532
1533         /*
1534          * We do not copy the other planner internal fields: base_rel_list,
1535          * other_rel_list, join_rel_list, equi_key_list, query_pathkeys. That
1536          * would get us into copying RelOptInfo/Path trees, which we don't
1537          * want to do.  It is necessary to copy in_info_list and hasJoinRTEs
1538          * for the benefit of inheritance_planner(), which may try to copy a
1539          * Query in which these are already set.
1540          */
1541
1542         return newnode;
1543 }
1544
1545 static InsertStmt *
1546 _copyInsertStmt(InsertStmt *from)
1547 {
1548         InsertStmt *newnode = makeNode(InsertStmt);
1549
1550         COPY_NODE_FIELD(relation);
1551         COPY_NODE_FIELD(cols);
1552         COPY_NODE_FIELD(targetList);
1553         COPY_NODE_FIELD(selectStmt);
1554
1555         return newnode;
1556 }
1557
1558 static DeleteStmt *
1559 _copyDeleteStmt(DeleteStmt *from)
1560 {
1561         DeleteStmt *newnode = makeNode(DeleteStmt);
1562
1563         COPY_NODE_FIELD(relation);
1564         COPY_NODE_FIELD(whereClause);
1565
1566         return newnode;
1567 }
1568
1569 static UpdateStmt *
1570 _copyUpdateStmt(UpdateStmt *from)
1571 {
1572         UpdateStmt *newnode = makeNode(UpdateStmt);
1573
1574         COPY_NODE_FIELD(relation);
1575         COPY_NODE_FIELD(targetList);
1576         COPY_NODE_FIELD(whereClause);
1577         COPY_NODE_FIELD(fromClause);
1578
1579         return newnode;
1580 }
1581
1582 static SelectStmt *
1583 _copySelectStmt(SelectStmt *from)
1584 {
1585         SelectStmt *newnode = makeNode(SelectStmt);
1586
1587         COPY_NODE_FIELD(distinctClause);
1588         COPY_NODE_FIELD(into);
1589         COPY_NODE_FIELD(intoColNames);
1590         COPY_NODE_FIELD(targetList);
1591         COPY_NODE_FIELD(fromClause);
1592         COPY_NODE_FIELD(whereClause);
1593         COPY_NODE_FIELD(groupClause);
1594         COPY_NODE_FIELD(havingClause);
1595         COPY_NODE_FIELD(sortClause);
1596         COPY_NODE_FIELD(limitOffset);
1597         COPY_NODE_FIELD(limitCount);
1598         COPY_NODE_FIELD(forUpdate);
1599         COPY_SCALAR_FIELD(op);
1600         COPY_SCALAR_FIELD(all);
1601         COPY_NODE_FIELD(larg);
1602         COPY_NODE_FIELD(rarg);
1603
1604         return newnode;
1605 }
1606
1607 static SetOperationStmt *
1608 _copySetOperationStmt(SetOperationStmt *from)
1609 {
1610         SetOperationStmt *newnode = makeNode(SetOperationStmt);
1611
1612         COPY_SCALAR_FIELD(op);
1613         COPY_SCALAR_FIELD(all);
1614         COPY_NODE_FIELD(larg);
1615         COPY_NODE_FIELD(rarg);
1616         COPY_OIDLIST_FIELD(colTypes);
1617
1618         return newnode;
1619 }
1620
1621 static AlterTableStmt *
1622 _copyAlterTableStmt(AlterTableStmt *from)
1623 {
1624         AlterTableStmt *newnode = makeNode(AlterTableStmt);
1625
1626         COPY_SCALAR_FIELD(subtype);
1627         COPY_NODE_FIELD(relation);
1628         COPY_STRING_FIELD(name);
1629         COPY_NODE_FIELD(def);
1630         COPY_SCALAR_FIELD(behavior);
1631
1632         return newnode;
1633 }
1634
1635 static AlterDomainStmt *
1636 _copyAlterDomainStmt(AlterDomainStmt * from)
1637 {
1638         AlterDomainStmt *newnode = makeNode(AlterDomainStmt);
1639
1640         COPY_SCALAR_FIELD(subtype);
1641         COPY_NODE_FIELD(typename);
1642         COPY_STRING_FIELD(name);
1643         COPY_NODE_FIELD(def);
1644         COPY_SCALAR_FIELD(behavior);
1645
1646         return newnode;
1647 }
1648
1649 static GrantStmt *
1650 _copyGrantStmt(GrantStmt *from)
1651 {
1652         GrantStmt  *newnode = makeNode(GrantStmt);
1653
1654         COPY_SCALAR_FIELD(is_grant);
1655         COPY_SCALAR_FIELD(objtype);
1656         COPY_NODE_FIELD(objects);
1657         COPY_INTLIST_FIELD(privileges);
1658         COPY_NODE_FIELD(grantees);
1659         COPY_SCALAR_FIELD(grant_option);
1660         COPY_SCALAR_FIELD(behavior);
1661
1662         return newnode;
1663 }
1664
1665 static PrivGrantee *
1666 _copyPrivGrantee(PrivGrantee *from)
1667 {
1668         PrivGrantee *newnode = makeNode(PrivGrantee);
1669
1670         COPY_STRING_FIELD(username);
1671         COPY_STRING_FIELD(groupname);
1672
1673         return newnode;
1674 }
1675
1676 static FuncWithArgs *
1677 _copyFuncWithArgs(FuncWithArgs *from)
1678 {
1679         FuncWithArgs *newnode = makeNode(FuncWithArgs);
1680
1681         COPY_NODE_FIELD(funcname);
1682         COPY_NODE_FIELD(funcargs);
1683
1684         return newnode;
1685 }
1686
1687 static DeclareCursorStmt *
1688 _copyDeclareCursorStmt(DeclareCursorStmt * from)
1689 {
1690         DeclareCursorStmt *newnode = makeNode(DeclareCursorStmt);
1691
1692         COPY_STRING_FIELD(portalname);
1693         COPY_SCALAR_FIELD(options);
1694         COPY_NODE_FIELD(query);
1695
1696         return newnode;
1697 }
1698
1699 static ClosePortalStmt *
1700 _copyClosePortalStmt(ClosePortalStmt *from)
1701 {
1702         ClosePortalStmt *newnode = makeNode(ClosePortalStmt);
1703
1704         COPY_STRING_FIELD(portalname);
1705
1706         return newnode;
1707 }
1708
1709 static ClusterStmt *
1710 _copyClusterStmt(ClusterStmt *from)
1711 {
1712         ClusterStmt *newnode = makeNode(ClusterStmt);
1713
1714         COPY_NODE_FIELD(relation);
1715         COPY_STRING_FIELD(indexname);
1716
1717         return newnode;
1718 }
1719
1720 static CopyStmt *
1721 _copyCopyStmt(CopyStmt *from)
1722 {
1723         CopyStmt   *newnode = makeNode(CopyStmt);
1724
1725         COPY_NODE_FIELD(relation);
1726         COPY_NODE_FIELD(attlist);
1727         COPY_SCALAR_FIELD(is_from);
1728         COPY_STRING_FIELD(filename);
1729         COPY_NODE_FIELD(options);
1730
1731         return newnode;
1732 }
1733
1734 static CreateStmt *
1735 _copyCreateStmt(CreateStmt *from)
1736 {
1737         CreateStmt *newnode = makeNode(CreateStmt);
1738
1739         COPY_NODE_FIELD(relation);
1740         COPY_NODE_FIELD(tableElts);
1741         COPY_NODE_FIELD(inhRelations);
1742         COPY_NODE_FIELD(constraints);
1743         COPY_SCALAR_FIELD(hasoids);
1744         COPY_SCALAR_FIELD(oncommit);
1745
1746         return newnode;
1747 }
1748
1749 static InhRelation *
1750 _copyInhRelation(InhRelation * from)
1751 {
1752         InhRelation *newnode = makeNode(InhRelation);
1753
1754         COPY_NODE_FIELD(relation);
1755         COPY_SCALAR_FIELD(including_defaults);
1756
1757         return newnode;
1758 }
1759
1760 static DefineStmt *
1761 _copyDefineStmt(DefineStmt *from)
1762 {
1763         DefineStmt *newnode = makeNode(DefineStmt);
1764
1765         COPY_SCALAR_FIELD(kind);
1766         COPY_NODE_FIELD(defnames);
1767         COPY_NODE_FIELD(definition);
1768
1769         return newnode;
1770 }
1771
1772 static DropStmt *
1773 _copyDropStmt(DropStmt *from)
1774 {
1775         DropStmt   *newnode = makeNode(DropStmt);
1776
1777         COPY_NODE_FIELD(objects);
1778         COPY_SCALAR_FIELD(removeType);
1779         COPY_SCALAR_FIELD(behavior);
1780
1781         return newnode;
1782 }
1783
1784 static TruncateStmt *
1785 _copyTruncateStmt(TruncateStmt *from)
1786 {
1787         TruncateStmt *newnode = makeNode(TruncateStmt);
1788
1789         COPY_NODE_FIELD(relation);
1790
1791         return newnode;
1792 }
1793
1794 static CommentStmt *
1795 _copyCommentStmt(CommentStmt *from)
1796 {
1797         CommentStmt *newnode = makeNode(CommentStmt);
1798
1799         COPY_SCALAR_FIELD(objtype);
1800         COPY_NODE_FIELD(objname);
1801         COPY_NODE_FIELD(objargs);
1802         COPY_STRING_FIELD(comment);
1803
1804         return newnode;
1805 }
1806
1807 static FetchStmt *
1808 _copyFetchStmt(FetchStmt *from)
1809 {
1810         FetchStmt  *newnode = makeNode(FetchStmt);
1811
1812         COPY_SCALAR_FIELD(direction);
1813         COPY_SCALAR_FIELD(howMany);
1814         COPY_STRING_FIELD(portalname);
1815         COPY_SCALAR_FIELD(ismove);
1816
1817         return newnode;
1818 }
1819
1820 static IndexStmt *
1821 _copyIndexStmt(IndexStmt *from)
1822 {
1823         IndexStmt  *newnode = makeNode(IndexStmt);
1824
1825         COPY_STRING_FIELD(idxname);
1826         COPY_NODE_FIELD(relation);
1827         COPY_STRING_FIELD(accessMethod);
1828         COPY_NODE_FIELD(indexParams);
1829         COPY_NODE_FIELD(whereClause);
1830         COPY_NODE_FIELD(rangetable);
1831         COPY_SCALAR_FIELD(unique);
1832         COPY_SCALAR_FIELD(primary);
1833         COPY_SCALAR_FIELD(isconstraint);
1834
1835         return newnode;
1836 }
1837
1838 static CreateFunctionStmt *
1839 _copyCreateFunctionStmt(CreateFunctionStmt *from)
1840 {
1841         CreateFunctionStmt *newnode = makeNode(CreateFunctionStmt);
1842
1843         COPY_SCALAR_FIELD(replace);
1844         COPY_NODE_FIELD(funcname);
1845         COPY_NODE_FIELD(argTypes);
1846         COPY_NODE_FIELD(returnType);
1847         COPY_NODE_FIELD(options);
1848         COPY_NODE_FIELD(withClause);
1849
1850         return newnode;
1851 }
1852
1853 static RemoveAggrStmt *
1854 _copyRemoveAggrStmt(RemoveAggrStmt *from)
1855 {
1856         RemoveAggrStmt *newnode = makeNode(RemoveAggrStmt);
1857
1858         COPY_NODE_FIELD(aggname);
1859         COPY_NODE_FIELD(aggtype);
1860         COPY_SCALAR_FIELD(behavior);
1861
1862         return newnode;
1863 }
1864
1865 static RemoveFuncStmt *
1866 _copyRemoveFuncStmt(RemoveFuncStmt *from)
1867 {
1868         RemoveFuncStmt *newnode = makeNode(RemoveFuncStmt);
1869
1870         COPY_NODE_FIELD(funcname);
1871         COPY_NODE_FIELD(args);
1872         COPY_SCALAR_FIELD(behavior);
1873
1874         return newnode;
1875 }
1876
1877 static RemoveOperStmt *
1878 _copyRemoveOperStmt(RemoveOperStmt *from)
1879 {
1880         RemoveOperStmt *newnode = makeNode(RemoveOperStmt);
1881
1882         COPY_NODE_FIELD(opname);
1883         COPY_NODE_FIELD(args);
1884         COPY_SCALAR_FIELD(behavior);
1885
1886         return newnode;
1887 }
1888
1889 static RemoveOpClassStmt *
1890 _copyRemoveOpClassStmt(RemoveOpClassStmt *from)
1891 {
1892         RemoveOpClassStmt *newnode = makeNode(RemoveOpClassStmt);
1893
1894         COPY_NODE_FIELD(opclassname);
1895         COPY_STRING_FIELD(amname);
1896         COPY_SCALAR_FIELD(behavior);
1897
1898         return newnode;
1899 }
1900
1901 static RenameStmt *
1902 _copyRenameStmt(RenameStmt *from)
1903 {
1904         RenameStmt *newnode = makeNode(RenameStmt);
1905
1906         COPY_NODE_FIELD(relation);
1907         COPY_NODE_FIELD(object);
1908         COPY_NODE_FIELD(objarg);
1909         COPY_STRING_FIELD(subname);
1910         COPY_STRING_FIELD(newname);
1911         COPY_SCALAR_FIELD(renameType);
1912
1913         return newnode;
1914 }
1915
1916 static RuleStmt *
1917 _copyRuleStmt(RuleStmt *from)
1918 {
1919         RuleStmt   *newnode = makeNode(RuleStmt);
1920
1921         COPY_NODE_FIELD(relation);
1922         COPY_STRING_FIELD(rulename);
1923         COPY_NODE_FIELD(whereClause);
1924         COPY_SCALAR_FIELD(event);
1925         COPY_SCALAR_FIELD(instead);
1926         COPY_NODE_FIELD(actions);
1927         COPY_SCALAR_FIELD(replace);
1928
1929         return newnode;
1930 }
1931
1932 static NotifyStmt *
1933 _copyNotifyStmt(NotifyStmt *from)
1934 {
1935         NotifyStmt *newnode = makeNode(NotifyStmt);
1936
1937         COPY_NODE_FIELD(relation);
1938
1939         return newnode;
1940 }
1941
1942 static ListenStmt *
1943 _copyListenStmt(ListenStmt *from)
1944 {
1945         ListenStmt *newnode = makeNode(ListenStmt);
1946
1947         COPY_NODE_FIELD(relation);
1948
1949         return newnode;
1950 }
1951
1952 static UnlistenStmt *
1953 _copyUnlistenStmt(UnlistenStmt *from)
1954 {
1955         UnlistenStmt *newnode = makeNode(UnlistenStmt);
1956
1957         COPY_NODE_FIELD(relation);
1958
1959         return newnode;
1960 }
1961
1962 static TransactionStmt *
1963 _copyTransactionStmt(TransactionStmt *from)
1964 {
1965         TransactionStmt *newnode = makeNode(TransactionStmt);
1966
1967         COPY_SCALAR_FIELD(kind);
1968         COPY_NODE_FIELD(options);
1969
1970         return newnode;
1971 }
1972
1973 static CompositeTypeStmt *
1974 _copyCompositeTypeStmt(CompositeTypeStmt *from)
1975 {
1976         CompositeTypeStmt *newnode = makeNode(CompositeTypeStmt);
1977
1978         COPY_NODE_FIELD(typevar);
1979         COPY_NODE_FIELD(coldeflist);
1980
1981         return newnode;
1982 }
1983
1984 static ViewStmt *
1985 _copyViewStmt(ViewStmt *from)
1986 {
1987         ViewStmt   *newnode = makeNode(ViewStmt);
1988
1989         COPY_NODE_FIELD(view);
1990         COPY_NODE_FIELD(aliases);
1991         COPY_NODE_FIELD(query);
1992         COPY_SCALAR_FIELD(replace);
1993
1994         return newnode;
1995 }
1996
1997 static LoadStmt *
1998 _copyLoadStmt(LoadStmt *from)
1999 {
2000         LoadStmt   *newnode = makeNode(LoadStmt);
2001
2002         COPY_STRING_FIELD(filename);
2003
2004         return newnode;
2005 }
2006
2007 static CreateDomainStmt *
2008 _copyCreateDomainStmt(CreateDomainStmt *from)
2009 {
2010         CreateDomainStmt *newnode = makeNode(CreateDomainStmt);
2011
2012         COPY_NODE_FIELD(domainname);
2013         COPY_NODE_FIELD(typename);
2014         COPY_NODE_FIELD(constraints);
2015
2016         return newnode;
2017 }
2018
2019 static CreateOpClassStmt *
2020 _copyCreateOpClassStmt(CreateOpClassStmt *from)
2021 {
2022         CreateOpClassStmt *newnode = makeNode(CreateOpClassStmt);
2023
2024         COPY_NODE_FIELD(opclassname);
2025         COPY_STRING_FIELD(amname);
2026         COPY_NODE_FIELD(datatype);
2027         COPY_NODE_FIELD(items);
2028         COPY_SCALAR_FIELD(isDefault);
2029
2030         return newnode;
2031 }
2032
2033 static CreateOpClassItem *
2034 _copyCreateOpClassItem(CreateOpClassItem *from)
2035 {
2036         CreateOpClassItem *newnode = makeNode(CreateOpClassItem);
2037
2038         COPY_SCALAR_FIELD(itemtype);
2039         COPY_NODE_FIELD(name);
2040         COPY_NODE_FIELD(args);
2041         COPY_SCALAR_FIELD(number);
2042         COPY_SCALAR_FIELD(recheck);
2043         COPY_NODE_FIELD(storedtype);
2044
2045         return newnode;
2046 }
2047
2048 static CreatedbStmt *
2049 _copyCreatedbStmt(CreatedbStmt *from)
2050 {
2051         CreatedbStmt *newnode = makeNode(CreatedbStmt);
2052
2053         COPY_STRING_FIELD(dbname);
2054         COPY_NODE_FIELD(options);
2055
2056         return newnode;
2057 }
2058
2059 static AlterDatabaseSetStmt *
2060 _copyAlterDatabaseSetStmt(AlterDatabaseSetStmt *from)
2061 {
2062         AlterDatabaseSetStmt *newnode = makeNode(AlterDatabaseSetStmt);
2063
2064         COPY_STRING_FIELD(dbname);
2065         COPY_STRING_FIELD(variable);
2066         COPY_NODE_FIELD(value);
2067
2068         return newnode;
2069 }
2070
2071 static DropdbStmt *
2072 _copyDropdbStmt(DropdbStmt *from)
2073 {
2074         DropdbStmt *newnode = makeNode(DropdbStmt);
2075
2076         COPY_STRING_FIELD(dbname);
2077
2078         return newnode;
2079 }
2080
2081 static VacuumStmt *
2082 _copyVacuumStmt(VacuumStmt *from)
2083 {
2084         VacuumStmt *newnode = makeNode(VacuumStmt);
2085
2086         COPY_SCALAR_FIELD(vacuum);
2087         COPY_SCALAR_FIELD(full);
2088         COPY_SCALAR_FIELD(analyze);
2089         COPY_SCALAR_FIELD(freeze);
2090         COPY_SCALAR_FIELD(verbose);
2091         COPY_NODE_FIELD(relation);
2092         COPY_NODE_FIELD(va_cols);
2093
2094         return newnode;
2095 }
2096
2097 static ExplainStmt *
2098 _copyExplainStmt(ExplainStmt *from)
2099 {
2100         ExplainStmt *newnode = makeNode(ExplainStmt);
2101
2102         COPY_NODE_FIELD(query);
2103         COPY_SCALAR_FIELD(verbose);
2104         COPY_SCALAR_FIELD(analyze);
2105
2106         return newnode;
2107 }
2108
2109 static CreateSeqStmt *
2110 _copyCreateSeqStmt(CreateSeqStmt *from)
2111 {
2112         CreateSeqStmt *newnode = makeNode(CreateSeqStmt);
2113
2114         COPY_NODE_FIELD(sequence);
2115         COPY_NODE_FIELD(options);
2116
2117         return newnode;
2118 }
2119
2120 static AlterSeqStmt *
2121 _copyAlterSeqStmt(AlterSeqStmt * from)
2122 {
2123         AlterSeqStmt *newnode = makeNode(AlterSeqStmt);
2124
2125         COPY_NODE_FIELD(sequence);
2126         COPY_NODE_FIELD(options);
2127
2128         return newnode;
2129 }
2130
2131 static VariableSetStmt *
2132 _copyVariableSetStmt(VariableSetStmt *from)
2133 {
2134         VariableSetStmt *newnode = makeNode(VariableSetStmt);
2135
2136         COPY_STRING_FIELD(name);
2137         COPY_NODE_FIELD(args);
2138         COPY_SCALAR_FIELD(is_local);
2139
2140         return newnode;
2141 }
2142
2143 static VariableShowStmt *
2144 _copyVariableShowStmt(VariableShowStmt *from)
2145 {
2146         VariableShowStmt *newnode = makeNode(VariableShowStmt);
2147
2148         COPY_STRING_FIELD(name);
2149
2150         return newnode;
2151 }
2152
2153 static VariableResetStmt *
2154 _copyVariableResetStmt(VariableResetStmt *from)
2155 {
2156         VariableResetStmt *newnode = makeNode(VariableResetStmt);
2157
2158         COPY_STRING_FIELD(name);
2159
2160         return newnode;
2161 }
2162
2163 static CreateTrigStmt *
2164 _copyCreateTrigStmt(CreateTrigStmt *from)
2165 {
2166         CreateTrigStmt *newnode = makeNode(CreateTrigStmt);
2167
2168         COPY_STRING_FIELD(trigname);
2169         COPY_NODE_FIELD(relation);
2170         COPY_NODE_FIELD(funcname);
2171         COPY_NODE_FIELD(args);
2172         COPY_SCALAR_FIELD(before);
2173         COPY_SCALAR_FIELD(row);
2174         strcpy(newnode->actions, from->actions);        /* in-line string field */
2175         COPY_SCALAR_FIELD(isconstraint);
2176         COPY_SCALAR_FIELD(deferrable);
2177         COPY_SCALAR_FIELD(initdeferred);
2178         COPY_NODE_FIELD(constrrel);
2179
2180         return newnode;
2181 }
2182
2183 static DropPropertyStmt *
2184 _copyDropPropertyStmt(DropPropertyStmt *from)
2185 {
2186         DropPropertyStmt *newnode = makeNode(DropPropertyStmt);
2187
2188         COPY_NODE_FIELD(relation);
2189         COPY_STRING_FIELD(property);
2190         COPY_SCALAR_FIELD(removeType);
2191         COPY_SCALAR_FIELD(behavior);
2192
2193         return newnode;
2194 }
2195
2196 static CreatePLangStmt *
2197 _copyCreatePLangStmt(CreatePLangStmt *from)
2198 {
2199         CreatePLangStmt *newnode = makeNode(CreatePLangStmt);
2200
2201         COPY_STRING_FIELD(plname);
2202         COPY_NODE_FIELD(plhandler);
2203         COPY_NODE_FIELD(plvalidator);
2204         COPY_SCALAR_FIELD(pltrusted);
2205
2206         return newnode;
2207 }
2208
2209 static DropPLangStmt *
2210 _copyDropPLangStmt(DropPLangStmt *from)
2211 {
2212         DropPLangStmt *newnode = makeNode(DropPLangStmt);
2213
2214         COPY_STRING_FIELD(plname);
2215         COPY_SCALAR_FIELD(behavior);
2216
2217         return newnode;
2218 }
2219
2220 static CreateUserStmt *
2221 _copyCreateUserStmt(CreateUserStmt *from)
2222 {
2223         CreateUserStmt *newnode = makeNode(CreateUserStmt);
2224
2225         COPY_STRING_FIELD(user);
2226         COPY_NODE_FIELD(options);
2227
2228         return newnode;
2229 }
2230
2231 static AlterUserStmt *
2232 _copyAlterUserStmt(AlterUserStmt *from)
2233 {
2234         AlterUserStmt *newnode = makeNode(AlterUserStmt);
2235
2236         COPY_STRING_FIELD(user);
2237         COPY_NODE_FIELD(options);
2238
2239         return newnode;
2240 }
2241
2242 static AlterUserSetStmt *
2243 _copyAlterUserSetStmt(AlterUserSetStmt *from)
2244 {
2245         AlterUserSetStmt *newnode = makeNode(AlterUserSetStmt);
2246
2247         COPY_STRING_FIELD(user);
2248         COPY_STRING_FIELD(variable);
2249         COPY_NODE_FIELD(value);
2250
2251         return newnode;
2252 }
2253
2254 static DropUserStmt *
2255 _copyDropUserStmt(DropUserStmt *from)
2256 {
2257         DropUserStmt *newnode = makeNode(DropUserStmt);
2258
2259         COPY_NODE_FIELD(users);
2260
2261         return newnode;
2262 }
2263
2264 static LockStmt *
2265 _copyLockStmt(LockStmt *from)
2266 {
2267         LockStmt   *newnode = makeNode(LockStmt);
2268
2269         COPY_NODE_FIELD(relations);
2270         COPY_SCALAR_FIELD(mode);
2271
2272         return newnode;
2273 }
2274
2275 static ConstraintsSetStmt *
2276 _copyConstraintsSetStmt(ConstraintsSetStmt *from)
2277 {
2278         ConstraintsSetStmt *newnode = makeNode(ConstraintsSetStmt);
2279
2280         COPY_NODE_FIELD(constraints);
2281         COPY_SCALAR_FIELD(deferred);
2282
2283         return newnode;
2284 }
2285
2286 static CreateGroupStmt *
2287 _copyCreateGroupStmt(CreateGroupStmt *from)
2288 {
2289         CreateGroupStmt *newnode = makeNode(CreateGroupStmt);
2290
2291         COPY_STRING_FIELD(name);
2292         COPY_NODE_FIELD(options);
2293
2294         return newnode;
2295 }
2296
2297 static AlterGroupStmt *
2298 _copyAlterGroupStmt(AlterGroupStmt *from)
2299 {
2300         AlterGroupStmt *newnode = makeNode(AlterGroupStmt);
2301
2302         COPY_STRING_FIELD(name);
2303         COPY_SCALAR_FIELD(action);
2304         COPY_NODE_FIELD(listUsers);
2305
2306         return newnode;
2307 }
2308
2309 static DropGroupStmt *
2310 _copyDropGroupStmt(DropGroupStmt *from)
2311 {
2312         DropGroupStmt *newnode = makeNode(DropGroupStmt);
2313
2314         COPY_STRING_FIELD(name);
2315
2316         return newnode;
2317 }
2318
2319 static ReindexStmt *
2320 _copyReindexStmt(ReindexStmt *from)
2321 {
2322         ReindexStmt *newnode = makeNode(ReindexStmt);
2323
2324         COPY_SCALAR_FIELD(kind);
2325         COPY_NODE_FIELD(relation);
2326         COPY_STRING_FIELD(name);
2327         COPY_SCALAR_FIELD(force);
2328         COPY_SCALAR_FIELD(all);
2329
2330         return newnode;
2331 }
2332
2333 static CreateSchemaStmt *
2334 _copyCreateSchemaStmt(CreateSchemaStmt *from)
2335 {
2336         CreateSchemaStmt *newnode = makeNode(CreateSchemaStmt);
2337
2338         COPY_STRING_FIELD(schemaname);
2339         COPY_STRING_FIELD(authid);
2340         COPY_NODE_FIELD(schemaElts);
2341
2342         return newnode;
2343 }
2344
2345 static CreateConversionStmt *
2346 _copyCreateConversionStmt(CreateConversionStmt *from)
2347 {
2348         CreateConversionStmt *newnode = makeNode(CreateConversionStmt);
2349
2350         COPY_NODE_FIELD(conversion_name);
2351         COPY_STRING_FIELD(for_encoding_name);
2352         COPY_STRING_FIELD(to_encoding_name);
2353         COPY_NODE_FIELD(func_name);
2354         COPY_SCALAR_FIELD(def);
2355
2356         return newnode;
2357 }
2358
2359 static CreateCastStmt *
2360 _copyCreateCastStmt(CreateCastStmt *from)
2361 {
2362         CreateCastStmt *newnode = makeNode(CreateCastStmt);
2363
2364         COPY_NODE_FIELD(sourcetype);
2365         COPY_NODE_FIELD(targettype);
2366         COPY_NODE_FIELD(func);
2367         COPY_SCALAR_FIELD(context);
2368
2369         return newnode;
2370 }
2371
2372 static DropCastStmt *
2373 _copyDropCastStmt(DropCastStmt *from)
2374 {
2375         DropCastStmt *newnode = makeNode(DropCastStmt);
2376
2377         COPY_NODE_FIELD(sourcetype);
2378         COPY_NODE_FIELD(targettype);
2379         COPY_SCALAR_FIELD(behavior);
2380
2381         return newnode;
2382 }
2383
2384 static PrepareStmt *
2385 _copyPrepareStmt(PrepareStmt *from)
2386 {
2387         PrepareStmt *newnode = makeNode(PrepareStmt);
2388
2389         COPY_STRING_FIELD(name);
2390         COPY_NODE_FIELD(argtypes);
2391         COPY_OIDLIST_FIELD(argtype_oids);
2392         COPY_NODE_FIELD(query);
2393
2394         return newnode;
2395 }
2396
2397 static ExecuteStmt *
2398 _copyExecuteStmt(ExecuteStmt *from)
2399 {
2400         ExecuteStmt *newnode = makeNode(ExecuteStmt);
2401
2402         COPY_STRING_FIELD(name);
2403         COPY_NODE_FIELD(into);
2404         COPY_NODE_FIELD(params);
2405
2406         return newnode;
2407 }
2408
2409 static DeallocateStmt *
2410 _copyDeallocateStmt(DeallocateStmt *from)
2411 {
2412         DeallocateStmt *newnode = makeNode(DeallocateStmt);
2413
2414         COPY_STRING_FIELD(name);
2415
2416         return newnode;
2417 }
2418
2419
2420 /* ****************************************************************
2421  *                                      pg_list.h copy functions
2422  * ****************************************************************
2423  */
2424
2425 static Value *
2426 _copyValue(Value *from)
2427 {
2428         Value      *newnode = makeNode(Value);
2429
2430         /* See also _copyAConst when changing this code! */
2431
2432         COPY_SCALAR_FIELD(type);
2433         switch (from->type)
2434         {
2435                 case T_Integer:
2436                         COPY_SCALAR_FIELD(val.ival);
2437                         break;
2438                 case T_Float:
2439                 case T_String:
2440                 case T_BitString:
2441                         COPY_STRING_FIELD(val.str);
2442                         break;
2443                 case T_Null:
2444                         /* nothing to do */
2445                         break;
2446                 default:
2447                         elog(ERROR, "unrecognized node type: %d",
2448                                  (int) from->type);
2449                         break;
2450         }
2451         return newnode;
2452 }
2453
2454 /*
2455  * copyObject
2456  *
2457  * Create a copy of a Node tree or list.  This is a "deep" copy: all
2458  * substructure is copied too, recursively.
2459  */
2460 void *
2461 copyObject(void *from)
2462 {
2463         void       *retval;
2464
2465         if (from == NULL)
2466                 return NULL;
2467
2468         switch (nodeTag(from))
2469         {
2470                         /*
2471                          * PLAN NODES
2472                          */
2473                 case T_Plan:
2474                         retval = _copyPlan(from);
2475                         break;
2476                 case T_Result:
2477                         retval = _copyResult(from);
2478                         break;
2479                 case T_Append:
2480                         retval = _copyAppend(from);
2481                         break;
2482                 case T_Scan:
2483                         retval = _copyScan(from);
2484                         break;
2485                 case T_SeqScan:
2486                         retval = _copySeqScan(from);
2487                         break;
2488                 case T_IndexScan:
2489                         retval = _copyIndexScan(from);
2490                         break;
2491                 case T_TidScan:
2492                         retval = _copyTidScan(from);
2493                         break;
2494                 case T_SubqueryScan:
2495                         retval = _copySubqueryScan(from);
2496                         break;
2497                 case T_FunctionScan:
2498                         retval = _copyFunctionScan(from);
2499                         break;
2500                 case T_Join:
2501                         retval = _copyJoin(from);
2502                         break;
2503                 case T_NestLoop:
2504                         retval = _copyNestLoop(from);
2505                         break;
2506                 case T_MergeJoin:
2507                         retval = _copyMergeJoin(from);
2508                         break;
2509                 case T_HashJoin:
2510                         retval = _copyHashJoin(from);
2511                         break;
2512                 case T_Material:
2513                         retval = _copyMaterial(from);
2514                         break;
2515                 case T_Sort:
2516                         retval = _copySort(from);
2517                         break;
2518                 case T_Group:
2519                         retval = _copyGroup(from);
2520                         break;
2521                 case T_Agg:
2522                         retval = _copyAgg(from);
2523                         break;
2524                 case T_Unique:
2525                         retval = _copyUnique(from);
2526                         break;
2527                 case T_Hash:
2528                         retval = _copyHash(from);
2529                         break;
2530                 case T_SetOp:
2531                         retval = _copySetOp(from);
2532                         break;
2533                 case T_Limit:
2534                         retval = _copyLimit(from);
2535                         break;
2536
2537                         /*
2538                          * PRIMITIVE NODES
2539                          */
2540                 case T_Resdom:
2541                         retval = _copyResdom(from);
2542                         break;
2543                 case T_Alias:
2544                         retval = _copyAlias(from);
2545                         break;
2546                 case T_RangeVar:
2547                         retval = _copyRangeVar(from);
2548                         break;
2549                 case T_Var:
2550                         retval = _copyVar(from);
2551                         break;
2552                 case T_Const:
2553                         retval = _copyConst(from);
2554                         break;
2555                 case T_Param:
2556                         retval = _copyParam(from);
2557                         break;
2558                 case T_Aggref:
2559                         retval = _copyAggref(from);
2560                         break;
2561                 case T_ArrayRef:
2562                         retval = _copyArrayRef(from);
2563                         break;
2564                 case T_FuncExpr:
2565                         retval = _copyFuncExpr(from);
2566                         break;
2567                 case T_OpExpr:
2568                         retval = _copyOpExpr(from);
2569                         break;
2570                 case T_DistinctExpr:
2571                         retval = _copyDistinctExpr(from);
2572                         break;
2573                 case T_ScalarArrayOpExpr:
2574                         retval = _copyScalarArrayOpExpr(from);
2575                         break;
2576                 case T_BoolExpr:
2577                         retval = _copyBoolExpr(from);
2578                         break;
2579                 case T_SubLink:
2580                         retval = _copySubLink(from);
2581                         break;
2582                 case T_SubPlan:
2583                         retval = _copySubPlan(from);
2584                         break;
2585                 case T_FieldSelect:
2586                         retval = _copyFieldSelect(from);
2587                         break;
2588                 case T_RelabelType:
2589                         retval = _copyRelabelType(from);
2590                         break;
2591                 case T_CaseExpr:
2592                         retval = _copyCaseExpr(from);
2593                         break;
2594                 case T_CaseWhen:
2595                         retval = _copyCaseWhen(from);
2596                         break;
2597                 case T_ArrayExpr:
2598                         retval = _copyArrayExpr(from);
2599                         break;
2600                 case T_CoalesceExpr:
2601                         retval = _copyCoalesceExpr(from);
2602                         break;
2603                 case T_NullIfExpr:
2604                         retval = _copyNullIfExpr(from);
2605                         break;
2606                 case T_NullTest:
2607                         retval = _copyNullTest(from);
2608                         break;
2609                 case T_BooleanTest:
2610                         retval = _copyBooleanTest(from);
2611                         break;
2612                 case T_CoerceToDomain:
2613                         retval = _copyCoerceToDomain(from);
2614                         break;
2615                 case T_CoerceToDomainValue:
2616                         retval = _copyCoerceToDomainValue(from);
2617                         break;
2618                 case T_SetToDefault:
2619                         retval = _copySetToDefault(from);
2620                         break;
2621                 case T_TargetEntry:
2622                         retval = _copyTargetEntry(from);
2623                         break;
2624                 case T_RangeTblRef:
2625                         retval = _copyRangeTblRef(from);
2626                         break;
2627                 case T_JoinExpr:
2628                         retval = _copyJoinExpr(from);
2629                         break;
2630                 case T_FromExpr:
2631                         retval = _copyFromExpr(from);
2632                         break;
2633
2634                         /*
2635                          * RELATION NODES
2636                          */
2637                 case T_PathKeyItem:
2638                         retval = _copyPathKeyItem(from);
2639                         break;
2640                 case T_RestrictInfo:
2641                         retval = _copyRestrictInfo(from);
2642                         break;
2643                 case T_JoinInfo:
2644                         retval = _copyJoinInfo(from);
2645                         break;
2646                 case T_InClauseInfo:
2647                         retval = _copyInClauseInfo(from);
2648                         break;
2649
2650                         /*
2651                          * VALUE NODES
2652                          */
2653                 case T_Integer:
2654                 case T_Float:
2655                 case T_String:
2656                 case T_BitString:
2657                 case T_Null:
2658                         retval = _copyValue(from);
2659                         break;
2660                 case T_List:
2661                         {
2662                                 List       *list = from,
2663                                                    *oldl,
2664                                                    *newcell,
2665                                                    *prev;
2666
2667                                 /* rather ugly coding for speed... */
2668                                 /* Note the input list cannot be NIL if we got here. */
2669                                 newcell = makeNode(List);
2670                                 lfirst(newcell) = copyObject(lfirst(list));
2671
2672                                 retval = (void *) newcell;
2673                                 prev = newcell;
2674
2675                                 foreach(oldl, lnext(list))
2676                                 {
2677                                         newcell = makeNode(List);
2678                                         lfirst(newcell) = copyObject(lfirst(oldl));
2679                                         prev->next = newcell;
2680                                         prev = newcell;
2681                                 }
2682                                 prev->next = NIL;
2683                         }
2684                         break;
2685
2686                         /*
2687                          * PARSE NODES
2688                          */
2689                 case T_Query:
2690                         retval = _copyQuery(from);
2691                         break;
2692                 case T_InsertStmt:
2693                         retval = _copyInsertStmt(from);
2694                         break;
2695                 case T_DeleteStmt:
2696                         retval = _copyDeleteStmt(from);
2697                         break;
2698                 case T_UpdateStmt:
2699                         retval = _copyUpdateStmt(from);
2700                         break;
2701                 case T_SelectStmt:
2702                         retval = _copySelectStmt(from);
2703                         break;
2704                 case T_SetOperationStmt:
2705                         retval = _copySetOperationStmt(from);
2706                         break;
2707                 case T_AlterTableStmt:
2708                         retval = _copyAlterTableStmt(from);
2709                         break;
2710                 case T_AlterDomainStmt:
2711                         retval = _copyAlterDomainStmt(from);
2712                         break;
2713                 case T_GrantStmt:
2714                         retval = _copyGrantStmt(from);
2715                         break;
2716                 case T_DeclareCursorStmt:
2717                         retval = _copyDeclareCursorStmt(from);
2718                         break;
2719                 case T_ClosePortalStmt:
2720                         retval = _copyClosePortalStmt(from);
2721                         break;
2722                 case T_ClusterStmt:
2723                         retval = _copyClusterStmt(from);
2724                         break;
2725                 case T_CopyStmt:
2726                         retval = _copyCopyStmt(from);
2727                         break;
2728                 case T_CreateStmt:
2729                         retval = _copyCreateStmt(from);
2730                         break;
2731                 case T_InhRelation:
2732                         retval = _copyInhRelation(from);
2733                         break;
2734                 case T_DefineStmt:
2735                         retval = _copyDefineStmt(from);
2736                         break;
2737                 case T_DropStmt:
2738                         retval = _copyDropStmt(from);
2739                         break;
2740                 case T_TruncateStmt:
2741                         retval = _copyTruncateStmt(from);
2742                         break;
2743                 case T_CommentStmt:
2744                         retval = _copyCommentStmt(from);
2745                         break;
2746                 case T_FetchStmt:
2747                         retval = _copyFetchStmt(from);
2748                         break;
2749                 case T_IndexStmt:
2750                         retval = _copyIndexStmt(from);
2751                         break;
2752                 case T_CreateFunctionStmt:
2753                         retval = _copyCreateFunctionStmt(from);
2754                         break;
2755                 case T_RemoveAggrStmt:
2756                         retval = _copyRemoveAggrStmt(from);
2757                         break;
2758                 case T_RemoveFuncStmt:
2759                         retval = _copyRemoveFuncStmt(from);
2760                         break;
2761                 case T_RemoveOperStmt:
2762                         retval = _copyRemoveOperStmt(from);
2763                         break;
2764                 case T_RemoveOpClassStmt:
2765                         retval = _copyRemoveOpClassStmt(from);
2766                         break;
2767                 case T_RenameStmt:
2768                         retval = _copyRenameStmt(from);
2769                         break;
2770                 case T_RuleStmt:
2771                         retval = _copyRuleStmt(from);
2772                         break;
2773                 case T_NotifyStmt:
2774                         retval = _copyNotifyStmt(from);
2775                         break;
2776                 case T_ListenStmt:
2777                         retval = _copyListenStmt(from);
2778                         break;
2779                 case T_UnlistenStmt:
2780                         retval = _copyUnlistenStmt(from);
2781                         break;
2782                 case T_TransactionStmt:
2783                         retval = _copyTransactionStmt(from);
2784                         break;
2785                 case T_CompositeTypeStmt:
2786                         retval = _copyCompositeTypeStmt(from);
2787                         break;
2788                 case T_ViewStmt:
2789                         retval = _copyViewStmt(from);
2790                         break;
2791                 case T_LoadStmt:
2792                         retval = _copyLoadStmt(from);
2793                         break;
2794                 case T_CreateDomainStmt:
2795                         retval = _copyCreateDomainStmt(from);
2796                         break;
2797                 case T_CreateOpClassStmt:
2798                         retval = _copyCreateOpClassStmt(from);
2799                         break;
2800                 case T_CreateOpClassItem:
2801                         retval = _copyCreateOpClassItem(from);
2802                         break;
2803                 case T_CreatedbStmt:
2804                         retval = _copyCreatedbStmt(from);
2805                         break;
2806                 case T_AlterDatabaseSetStmt:
2807                         retval = _copyAlterDatabaseSetStmt(from);
2808                         break;
2809                 case T_DropdbStmt:
2810                         retval = _copyDropdbStmt(from);
2811                         break;
2812                 case T_VacuumStmt:
2813                         retval = _copyVacuumStmt(from);
2814                         break;
2815                 case T_ExplainStmt:
2816                         retval = _copyExplainStmt(from);
2817                         break;
2818                 case T_CreateSeqStmt:
2819                         retval = _copyCreateSeqStmt(from);
2820                         break;
2821                 case T_AlterSeqStmt:
2822                         retval = _copyAlterSeqStmt(from);
2823                         break;
2824                 case T_VariableSetStmt:
2825                         retval = _copyVariableSetStmt(from);
2826                         break;
2827                 case T_VariableShowStmt:
2828                         retval = _copyVariableShowStmt(from);
2829                         break;
2830                 case T_VariableResetStmt:
2831                         retval = _copyVariableResetStmt(from);
2832                         break;
2833                 case T_CreateTrigStmt:
2834                         retval = _copyCreateTrigStmt(from);
2835                         break;
2836                 case T_DropPropertyStmt:
2837                         retval = _copyDropPropertyStmt(from);
2838                         break;
2839                 case T_CreatePLangStmt:
2840                         retval = _copyCreatePLangStmt(from);
2841                         break;
2842                 case T_DropPLangStmt:
2843                         retval = _copyDropPLangStmt(from);
2844                         break;
2845                 case T_CreateUserStmt:
2846                         retval = _copyCreateUserStmt(from);
2847                         break;
2848                 case T_AlterUserStmt:
2849                         retval = _copyAlterUserStmt(from);
2850                         break;
2851                 case T_AlterUserSetStmt:
2852                         retval = _copyAlterUserSetStmt(from);
2853                         break;
2854                 case T_DropUserStmt:
2855                         retval = _copyDropUserStmt(from);
2856                         break;
2857                 case T_LockStmt:
2858                         retval = _copyLockStmt(from);
2859                         break;
2860                 case T_ConstraintsSetStmt:
2861                         retval = _copyConstraintsSetStmt(from);
2862                         break;
2863                 case T_CreateGroupStmt:
2864                         retval = _copyCreateGroupStmt(from);
2865                         break;
2866                 case T_AlterGroupStmt:
2867                         retval = _copyAlterGroupStmt(from);
2868                         break;
2869                 case T_DropGroupStmt:
2870                         retval = _copyDropGroupStmt(from);
2871                         break;
2872                 case T_ReindexStmt:
2873                         retval = _copyReindexStmt(from);
2874                         break;
2875                 case T_CheckPointStmt:
2876                         retval = (void *) makeNode(CheckPointStmt);
2877                         break;
2878                 case T_CreateSchemaStmt:
2879                         retval = _copyCreateSchemaStmt(from);
2880                         break;
2881                 case T_CreateConversionStmt:
2882                         retval = _copyCreateConversionStmt(from);
2883                         break;
2884                 case T_CreateCastStmt:
2885                         retval = _copyCreateCastStmt(from);
2886                         break;
2887                 case T_DropCastStmt:
2888                         retval = _copyDropCastStmt(from);
2889                         break;
2890                 case T_PrepareStmt:
2891                         retval = _copyPrepareStmt(from);
2892                         break;
2893                 case T_ExecuteStmt:
2894                         retval = _copyExecuteStmt(from);
2895                         break;
2896                 case T_DeallocateStmt:
2897                         retval = _copyDeallocateStmt(from);
2898                         break;
2899
2900                 case T_A_Expr:
2901                         retval = _copyAExpr(from);
2902                         break;
2903                 case T_ColumnRef:
2904                         retval = _copyColumnRef(from);
2905                         break;
2906                 case T_ParamRef:
2907                         retval = _copyParamRef(from);
2908                         break;
2909                 case T_A_Const:
2910                         retval = _copyAConst(from);
2911                         break;
2912                 case T_FuncCall:
2913                         retval = _copyFuncCall(from);
2914                         break;
2915                 case T_A_Indices:
2916                         retval = _copyAIndices(from);
2917                         break;
2918                 case T_ExprFieldSelect:
2919                         retval = _copyExprFieldSelect(from);
2920                         break;
2921                 case T_ResTarget:
2922                         retval = _copyResTarget(from);
2923                         break;
2924                 case T_TypeCast:
2925                         retval = _copyTypeCast(from);
2926                         break;
2927                 case T_SortGroupBy:
2928                         retval = _copySortGroupBy(from);
2929                         break;
2930                 case T_RangeSubselect:
2931                         retval = _copyRangeSubselect(from);
2932                         break;
2933                 case T_RangeFunction:
2934                         retval = _copyRangeFunction(from);
2935                         break;
2936                 case T_TypeName:
2937                         retval = _copyTypeName(from);
2938                         break;
2939                 case T_IndexElem:
2940                         retval = _copyIndexElem(from);
2941                         break;
2942                 case T_ColumnDef:
2943                         retval = _copyColumnDef(from);
2944                         break;
2945                 case T_Constraint:
2946                         retval = _copyConstraint(from);
2947                         break;
2948                 case T_DefElem:
2949                         retval = _copyDefElem(from);
2950                         break;
2951                 case T_RangeTblEntry:
2952                         retval = _copyRangeTblEntry(from);
2953                         break;
2954                 case T_SortClause:
2955                         retval = _copySortClause(from);
2956                         break;
2957                 case T_GroupClause:
2958                         retval = _copyGroupClause(from);
2959                         break;
2960                 case T_FkConstraint:
2961                         retval = _copyFkConstraint(from);
2962                         break;
2963                 case T_PrivGrantee:
2964                         retval = _copyPrivGrantee(from);
2965                         break;
2966                 case T_FuncWithArgs:
2967                         retval = _copyFuncWithArgs(from);
2968                         break;
2969
2970                 default:
2971                         elog(ERROR, "unrecognized node type: %d", (int) nodeTag(from));
2972                         retval = from;          /* keep compiler quiet */
2973                         break;
2974         }
2975
2976         return retval;
2977 }