From 8f0530f58061b185dc385df42e62d78a18d4ae3e Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Mon, 10 Apr 2017 13:51:29 -0400 Subject: Improve castNode notation by introducing list-extraction-specific variants. This extends the castNode() notation introduced by commit 5bcab1114 to provide, in one step, extraction of a list cell's pointer and coercion to a concrete node type. For example, "lfirst_node(Foo, lc)" is the same as "castNode(Foo, lfirst(lc))". Almost half of the uses of castNode that have appeared so far include a list extraction call, so this is pretty widely useful, and it saves a few more keystrokes compared to the old way. As with the previous patch, back-patch the addition of these macros to pg_list.h, so that the notation will be available when back-patching. Patch by me, after an idea of Andrew Gierth's. Discussion: https://postgr.es/m/14197.1491841216@sss.pgh.pa.us --- src/backend/optimizer/plan/subselect.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/backend/optimizer/plan/subselect.c') diff --git a/src/backend/optimizer/plan/subselect.c b/src/backend/optimizer/plan/subselect.c index 87cc44d678..8d0d8aed66 100644 --- a/src/backend/optimizer/plan/subselect.c +++ b/src/backend/optimizer/plan/subselect.c @@ -433,7 +433,7 @@ get_first_col_type(Plan *plan, Oid *coltype, int32 *coltypmod, /* In cases such as EXISTS, tlist might be empty; arbitrarily use VOID */ if (plan->targetlist) { - TargetEntry *tent = castNode(TargetEntry, linitial(plan->targetlist)); + TargetEntry *tent = linitial_node(TargetEntry, plan->targetlist); if (!tent->resjunk) { -- cgit v1.2.1