mirror of
https://github.com/postgres/postgres.git
synced 2025-11-10 17:42:29 +03:00
Add test code to copy all parse/plan trees. Repair essential omissions
in copyfuncs and equalfuncs exposed by regression tests. We still have some work to do: these modules really ought to handle most or all of the utility statement node types. But it's better than it was.
This commit is contained in:
Tom Lane
@@ -1,14 +1,30 @@
|
||||
/*-------------------------------------------------------------------------
|
||||
*
|
||||
* equalfuncs.c
|
||||
* equality functions to compare node trees
|
||||
* Equality functions to compare node trees.
|
||||
*
|
||||
* NOTE: a general convention when copying or comparing plan nodes is
|
||||
* that we ignore the executor state subnode. We do not need to look
|
||||
* at it because no current uses of copyObject() or equal() need to
|
||||
* deal with already-executing plan trees. By leaving the state subnodes
|
||||
* out, we avoid needing to write copy/compare routines for all the
|
||||
* different executor state node types.
|
||||
*
|
||||
* Currently, in fact, equal() doesn't know how to compare Plan nodes
|
||||
* at all, let alone their executor-state subnodes. This will probably
|
||||
* need to be fixed someday, but presently there is no need to compare
|
||||
* plan trees.
|
||||
*
|
||||
* Another class of nodes not currently handled is nodes that appear
|
||||
* only in "raw" parsetrees (gram.y output not yet analyzed by the parser).
|
||||
* Perhaps some day that will need to be supported.
|
||||
*
|
||||
*
|
||||
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc
|
||||
* Portions Copyright (c) 1994, Regents of the University of California
|
||||
*
|
||||
*
|
||||
* IDENTIFICATION
|
||||
* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.66 2000/04/12 17:15:16 momjian Exp $
|
||||
* $Header: /cvsroot/pgsql/src/backend/nodes/equalfuncs.c,v 1.67 2000/06/29 07:35:56 tgl Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
|
||||
*/
|
||||
@@ -452,56 +468,6 @@ _equalHashPath(HashPath *a, HashPath *b)
|
||||
return true;
|
||||
}
|
||||
|
||||
/* XXX This equality function is a quick hack, should be
|
||||
* fixed to compare all fields.
|
||||
*
|
||||
* XXX Why is this even here? We don't have equal() funcs for
|
||||
* any other kinds of Plan nodes... likely this is dead code...
|
||||
*/
|
||||
static bool
|
||||
_equalIndexScan(IndexScan *a, IndexScan *b)
|
||||
{
|
||||
|
||||
/*
|
||||
* if(a->scan.plan.cost != b->scan.plan.cost) return(false);
|
||||
*/
|
||||
|
||||
if (!equal(a->indxqual, b->indxqual))
|
||||
return false;
|
||||
|
||||
if (a->scan.scanrelid != b->scan.scanrelid)
|
||||
return false;
|
||||
|
||||
if (a->indxorderdir != b->indxorderdir)
|
||||
return false;
|
||||
|
||||
if (!equali(a->indxid, b->indxid))
|
||||
return false;
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
_equalTidScan(TidScan *a, TidScan *b)
|
||||
{
|
||||
Assert(IsA(a, TidScan));
|
||||
Assert(IsA(b, TidScan));
|
||||
|
||||
/*
|
||||
* if(a->scan.plan.cost != b->scan.plan.cost) return(false);
|
||||
*/
|
||||
|
||||
if (a->needRescan != b->needRescan)
|
||||
return false;
|
||||
|
||||
if (!equal(a->tideval, b->tideval))
|
||||
return false;
|
||||
|
||||
if (a->scan.scanrelid != b->scan.scanrelid)
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
_equalSubPlan(SubPlan *a, SubPlan *b)
|
||||
{
|
||||
@@ -703,6 +669,17 @@ _equalSortClause(SortClause *a, SortClause *b)
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
_equalRowMark(RowMark *a, RowMark *b)
|
||||
{
|
||||
if (a->rti != b->rti)
|
||||
return false;
|
||||
if (a->info != b->info)
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static bool
|
||||
_equalTargetEntry(TargetEntry *a, TargetEntry *b)
|
||||
{
|
||||
@@ -792,6 +769,9 @@ equal(void *a, void *b)
|
||||
|
||||
switch (nodeTag(a))
|
||||
{
|
||||
case T_SubPlan:
|
||||
retval = _equalSubPlan(a, b);
|
||||
break;
|
||||
case T_Resdom:
|
||||
retval = _equalResdom(a, b);
|
||||
break;
|
||||
@@ -801,24 +781,9 @@ equal(void *a, void *b)
|
||||
case T_Expr:
|
||||
retval = _equalExpr(a, b);
|
||||
break;
|
||||
case T_Iter:
|
||||
retval = _equalIter(a, b);
|
||||
break;
|
||||
case T_Stream:
|
||||
retval = _equalStream(a, b);
|
||||
break;
|
||||
case T_Attr:
|
||||
retval = _equalAttr(a, b);
|
||||
break;
|
||||
case T_Var:
|
||||
retval = _equalVar(a, b);
|
||||
break;
|
||||
case T_Array:
|
||||
retval = _equalArray(a, b);
|
||||
break;
|
||||
case T_ArrayRef:
|
||||
retval = _equalArrayRef(a, b);
|
||||
break;
|
||||
case T_Oper:
|
||||
retval = _equalOper(a, b);
|
||||
break;
|
||||
@@ -834,33 +799,30 @@ equal(void *a, void *b)
|
||||
case T_SubLink:
|
||||
retval = _equalSubLink(a, b);
|
||||
break;
|
||||
case T_RelabelType:
|
||||
retval = _equalRelabelType(a, b);
|
||||
break;
|
||||
case T_Func:
|
||||
retval = _equalFunc(a, b);
|
||||
break;
|
||||
case T_RestrictInfo:
|
||||
retval = _equalRestrictInfo(a, b);
|
||||
case T_Array:
|
||||
retval = _equalArray(a, b);
|
||||
break;
|
||||
case T_ArrayRef:
|
||||
retval = _equalArrayRef(a, b);
|
||||
break;
|
||||
case T_Iter:
|
||||
retval = _equalIter(a, b);
|
||||
break;
|
||||
case T_RelabelType:
|
||||
retval = _equalRelabelType(a, b);
|
||||
break;
|
||||
case T_RelOptInfo:
|
||||
retval = _equalRelOptInfo(a, b);
|
||||
break;
|
||||
case T_IndexOptInfo:
|
||||
retval = _equalIndexOptInfo(a, b);
|
||||
break;
|
||||
case T_PathKeyItem:
|
||||
retval = _equalPathKeyItem(a, b);
|
||||
break;
|
||||
case T_Path:
|
||||
retval = _equalPath(a, b);
|
||||
break;
|
||||
case T_IndexPath:
|
||||
retval = _equalIndexPath(a, b);
|
||||
break;
|
||||
case T_TidPath:
|
||||
retval = _equalTidPath(a, b);
|
||||
break;
|
||||
case T_NestPath:
|
||||
retval = _equalNestPath(a, b);
|
||||
break;
|
||||
@@ -870,25 +832,29 @@ equal(void *a, void *b)
|
||||
case T_HashPath:
|
||||
retval = _equalHashPath(a, b);
|
||||
break;
|
||||
case T_IndexScan:
|
||||
retval = _equalIndexScan(a, b);
|
||||
case T_PathKeyItem:
|
||||
retval = _equalPathKeyItem(a, b);
|
||||
break;
|
||||
case T_TidScan:
|
||||
retval = _equalTidScan(a, b);
|
||||
break;
|
||||
case T_SubPlan:
|
||||
retval = _equalSubPlan(a, b);
|
||||
case T_RestrictInfo:
|
||||
retval = _equalRestrictInfo(a, b);
|
||||
break;
|
||||
case T_JoinInfo:
|
||||
retval = _equalJoinInfo(a, b);
|
||||
break;
|
||||
case T_Stream:
|
||||
retval = _equalStream(a, b);
|
||||
break;
|
||||
case T_TidPath:
|
||||
retval = _equalTidPath(a, b);
|
||||
break;
|
||||
case T_IndexOptInfo:
|
||||
retval = _equalIndexOptInfo(a, b);
|
||||
break;
|
||||
case T_EState:
|
||||
retval = _equalEState(a, b);
|
||||
break;
|
||||
case T_Integer:
|
||||
case T_Float:
|
||||
case T_String:
|
||||
retval = _equalValue(a, b);
|
||||
case T_Attr:
|
||||
retval = _equalAttr(a, b);
|
||||
break;
|
||||
case T_List:
|
||||
{
|
||||
@@ -911,9 +877,17 @@ equal(void *a, void *b)
|
||||
retval = true;
|
||||
}
|
||||
break;
|
||||
case T_Integer:
|
||||
case T_Float:
|
||||
case T_String:
|
||||
retval = _equalValue(a, b);
|
||||
break;
|
||||
case T_Query:
|
||||
retval = _equalQuery(a, b);
|
||||
break;
|
||||
case T_TargetEntry:
|
||||
retval = _equalTargetEntry(a, b);
|
||||
break;
|
||||
case T_RangeTblEntry:
|
||||
retval = _equalRangeTblEntry(a, b);
|
||||
break;
|
||||
@@ -924,15 +898,16 @@ equal(void *a, void *b)
|
||||
/* GroupClause is equivalent to SortClause */
|
||||
retval = _equalSortClause(a, b);
|
||||
break;
|
||||
case T_TargetEntry:
|
||||
retval = _equalTargetEntry(a, b);
|
||||
break;
|
||||
case T_CaseExpr:
|
||||
retval = _equalCaseExpr(a, b);
|
||||
break;
|
||||
case T_CaseWhen:
|
||||
retval = _equalCaseWhen(a, b);
|
||||
break;
|
||||
case T_RowMark:
|
||||
retval = _equalRowMark(a, b);
|
||||
break;
|
||||
|
||||
default:
|
||||
elog(NOTICE, "equal: don't know whether nodes of type %d are equal",
|
||||
nodeTag(a));
|
||||
|
||||
Reference in New Issue
Block a user