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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2017-04-10 13:51:29 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2017-04-10 13:51:53 -0400 |
| commit | 8f0530f58061b185dc385df42e62d78a18d4ae3e (patch) | |
| tree | 63d038ae4012dcdcff3b556dde4c654959f8448e /src/backend/executor/execExpr.c | |
| parent | 56dd8e85c40fef3e3c2c10afa186ee30416ec507 (diff) | |
| download | postgresql-8f0530f58061b185dc385df42e62d78a18d4ae3e.tar.gz postgresql-8f0530f58061b185dc385df42e62d78a18d4ae3e.zip | |
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
Diffstat (limited to 'src/backend/executor/execExpr.c')
| -rw-r--r-- | src/backend/executor/execExpr.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/executor/execExpr.c b/src/backend/executor/execExpr.c index 97ec8fb033b..15d693fac4d 100644 --- a/src/backend/executor/execExpr.c +++ b/src/backend/executor/execExpr.c @@ -322,7 +322,7 @@ ExecBuildProjectionInfo(List *targetList, /* Now compile each tlist column */ foreach(lc, targetList) { - TargetEntry *tle = castNode(TargetEntry, lfirst(lc)); + TargetEntry *tle = lfirst_node(TargetEntry, lc); Var *variable = NULL; AttrNumber attnum = 0; bool isSafeVar = false; |