database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-08 11:42:09 +03:00
Code Activity

Improve castNode notation by introducing list-extraction-specific variants.

Browse Source 
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
This commit is contained in:
Tom Lane
2017-04-10 13:51:29 -04:00
parent 56dd8e85c4
commit 8f0530f580
65 changed files with 176 additions and 168 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/backend/executor/functions.c
View File

@ -479,14 +479,14 @@ init_execution_state(List *queryTree_list,
foreach(lc1, queryTree_list)
{
List *qtlist = castNode(List, lfirst(lc1));
List *qtlist = lfirst_node(List, lc1);
execution_state *firstes = NULL;
execution_state *preves = NULL;
ListCell *lc2;
foreach(lc2, qtlist)
{
Query *queryTree = castNode(Query, lfirst(lc2));
Query *queryTree = lfirst_node(Query, lc2);
PlannedStmt *stmt;
execution_state *newes;
@ -707,7 +707,7 @@ init_sql_fcache(FmgrInfo *finfo, Oid collation, bool lazyEvalOK)
flat_query_list = NIL;
foreach(lc, raw_parsetree_list)
{
RawStmt *parsetree = castNode(RawStmt, lfirst(lc));
RawStmt *parsetree = lfirst_node(RawStmt, lc);
List *queryTree_sublist;
queryTree_sublist = pg_analyze_and_rewrite_params(parsetree,
@ -1555,7 +1555,7 @@ check_sql_fn_retval(Oid func_id, Oid rettype, List *queryTreeList,
parse = NULL;
foreach(lc, queryTreeList)
{
Query *q = castNode(Query, lfirst(lc));
Query *q = lfirst_node(Query, lc);
if (q->canSetTag)
parse = q;