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/parser/parse_relation.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/backend/parser/parse_relation.c') diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c index 062b8a1d22..f960f3844c 100644 --- a/src/backend/parser/parse_relation.c +++ b/src/backend/parser/parse_relation.c @@ -931,7 +931,7 @@ markRTEForSelectPriv(ParseState *pstate, RangeTblEntry *rte, JoinExpr *j; if (rtindex > 0 && rtindex <= list_length(pstate->p_joinexprs)) - j = castNode(JoinExpr, list_nth(pstate->p_joinexprs, rtindex - 1)); + j = list_nth_node(JoinExpr, pstate->p_joinexprs, rtindex - 1); else j = NULL; if (j == NULL) -- cgit v1.2.1