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Tom Lane be182d5702 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
2017-04-10 13:51:29 -04:00
..
access Don't use bgw_main even to specify in-core bgworker entrypoints. 2017-03-31 20:47:50 -04:00
bootstrap Update copyright for 2016 2016-01-02 13:33:40 -05:00
catalog Fix copy-pasto in comment. 2016-10-12 12:08:38 +03:00
commands Final pgindent + perltidy run for 9.6. 2016-08-15 13:42:51 -04:00
common Fix integer-overflow problems in interval comparison. 2017-04-05 23:51:28 -04:00
datatype Be more careful about out-of-range dates and timestamps. 2016-03-16 19:09:28 -04:00
executor Fix worst memory leaks in tqueue.c. 2016-07-29 19:31:06 -04:00
fe_utils Fix assorted places in psql to print version numbers >= 10 in new style. 2016-08-16 15:58:46 -04:00
foreign Remove GetUserMappingId() and GetUserMappingById(). 2016-07-22 11:32:23 -04:00
lib Revert "Permit dump/reload of not-too-large >1GB tuples" 2016-12-06 12:46:03 -03:00
libpq Fix pq_putmessage_noblock() to not block. 2016-07-29 12:52:57 -04:00
mb Update copyright for 2016 2016-01-02 13:33:40 -05:00
nodes Improve castNode notation by introducing list-extraction-specific variants. 2017-04-10 13:51:29 -04:00
optimizer Avoid making a separate pass over the query to check for partializability. 2016-06-26 15:55:01 -04:00
parser Fix type-safety problem with parallel aggregate serial/deserialization. 2016-06-22 16:52:41 -04:00
port Fix unportable definition of BSWAP64() macro. 2017-02-24 15:21:39 -05:00
portability Update copyright for 2016 2016-01-02 13:33:40 -05:00
postmaster Avoid using PostmasterRandom() for DSM control segment ID. 2016-09-23 09:54:11 -04:00
regex Suppress compiler warnings about useless comparison of unsigned to zero. 2016-02-15 17:12:16 -05:00
replication Formatting and docs corrections for logical decoding output plugins. 2017-02-15 18:15:47 -05:00
rewrite Update copyright for 2016 2016-01-02 13:33:40 -05:00
snowball Update copyright for 2016 2016-01-02 13:33:40 -05:00
storage Fix failure to mark init buffers as BM_PERMANENT. 2017-03-14 11:52:27 -04:00
tcop Remove dead code and fix comments in fast-path function handling. 2017-04-06 09:11:11 +03:00
tsearch Fix typos in comments. 2017-02-06 11:34:15 +02:00
utils Handle ALTER EXTENSION ADD/DROP with pg_init_privs 2017-01-29 23:05:09 -05:00
.gitignore Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
c.h Fix typos in comments. 2017-02-06 11:34:15 +02:00
fmgr.h Revert addition of PGDLLEXPORT in PG_FUNCTION_INFO_V1 macro. 2016-10-12 18:01:52 -04:00
funcapi.h Widen query numbers-of-tuples-processed counters to uint64. 2016-03-12 16:05:29 -05:00
getaddrinfo.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
getopt_long.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
Makefile Create src/fe_utils/, and move stuff into there from pg_dump's dumputils. 2016-03-24 15:55:57 -04:00
miscadmin.h Mark PostmasterPid as PGDLLIMPORT. 2016-06-03 14:06:35 -04:00
pg_config.h.in Fix building with LibreSSL. 2016-09-15 22:45:08 +03:00
pg_config.h.win32 Stamp 9.6.2. 2017-02-06 16:45:25 -05:00
pg_config_ext.h.in Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_ext.h.win32 Autoconfiscate selection of 64-bit int type for 64-bit large object API. 2012-10-07 21:52:43 -04:00
pg_config_manual.h Bring some clarity to the defaults for the xxx_flush_after parameters. 2016-11-25 18:36:10 -05:00
pg_getopt.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pg_trace.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pgstat.h Fix typos in comments. 2016-10-26 11:13:17 +03:00
pgtar.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
pgtime.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
port.h On all Windows platforms, not just Cygwin, use _timezone and _tzname. 2016-03-28 20:59:25 -04:00
postgres.h Adjust DatumGetBool macro, this time for sure. 2016-04-28 11:50:58 -04:00
postgres_ext.h Add a nonlocalized version of the severity field to client error messages. 2016-08-26 16:20:24 -04:00
postgres_fe.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
rusagestub.h Update copyright for 2016 2016-01-02 13:33:40 -05:00
windowapi.h Update copyright for 2016 2016-01-02 13:33:40 -05:00