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Make more use of castNode()

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This commit is contained in:
Peter Eisentraut
2017-02-21 11:33:07 -05:00
parent 4e5ce3c1ae
commit 38d103763d
37 changed files with 121 additions and 222 deletions
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10
src/backend/optimizer/util/clauses.c
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@@ -2700,9 +2700,8 @@ eval_const_expressions_mutator(Node *node,
* Since the underlying operator is "=", must negate
* its result
*/
Const *csimple = (Const *) simple;
Const *csimple = castNode(Const, simple);
Assert(IsA(csimple, Const));
csimple->constvalue =
BoolGetDatum(!DatumGetBool(csimple->constvalue));
return (Node *) csimple;
@@ -3091,12 +3090,10 @@ eval_const_expressions_mutator(Node *node,
const_true_cond = false;
foreach(arg, caseexpr->args)
{
CaseWhen *oldcasewhen = (CaseWhen *) lfirst(arg);
CaseWhen *oldcasewhen = castNode(CaseWhen, lfirst(arg));
Node *casecond;
Node *caseresult;
Assert(IsA(oldcasewhen, CaseWhen));
/* Simplify this alternative's test condition */
casecond = eval_const_expressions_mutator((Node *) oldcasewhen->expr,
context);
@@ -4081,8 +4078,7 @@ fetch_function_defaults(HeapTuple func_tuple)
if (isnull)
elog(ERROR, "not enough default arguments");
str = TextDatumGetCString(proargdefaults);
defaults = (List *) stringToNode(str);
Assert(IsA(defaults, List));
defaults = castNode(List, stringToNode(str));
pfree(str);
return defaults;
}