linux-kernel - [PATCH 12/23] checkpatch: check spacing for square brackets

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Message-Id: <1213272362-19457-13-git-send-email-apw@shadowen.org>
Date:	Thu, 12 Jun 2008 13:05:51 +0100
From:	Andy Whitcroft <apw@...dowen.org>
To:	Andrew Morton <akpm@...l.org>
Cc:	Randy Dunlap <rdunlap@...otime.net>,
	Joel Schopp <jschopp@...tin.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andy Whitcroft <apw@...dowen.org>
Subject: [PATCH 12/23] checkpatch: check spacing for square brackets

Check on the spacing before square brackets.  We should only allow spaces
there if this is part of a type definition or an initialialiser.

Signed-off-by: Andy Whitcroft <apw@...dowen.org>
---
 scripts/checkpatch.pl |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 5f71b30..e7c8ab1 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1435,6 +1435,17 @@ sub process {
 			ERROR("open brace '{' following $1 go on the same line\n" . $hereprev);
 		}
 
+# check for spacing round square brackets; allowed:
+#  1. with a type on the left -- int [] a;
+#  2. at the beginning of a line for slice initialisers -- [0..10] = 5,
+		while ($line =~ /(.*?\s)\[/g) {
+			my ($where, $prefix) = ($-[1], $1);
+			if ($prefix !~ /$Type\s+$/ &&
+			    ($where != 0 || $prefix !~ /^.\s+$/)) {
+				ERROR("space prohibited before open square bracket '['\n" . $herecurr);
+			}
+		}
+
 # check for spaces between functions and their parentheses.
 		while ($line =~ /($Ident)\s+\(/g) {
 			my $name = $1;
-- 
1.5.6.rc0.140.ga9675

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