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authorJoe Perches <joe@perches.com>2012-02-03 15:20:39 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-02-07 15:53:08 -0800
commit8eef05dd3e70233f3e391774d612dab44c3f023b (patch)
treedda65b15abaa42564d2e46424bfe6a7a73cc5681
parent6bd113f1f4a8c0d05c4dbadb300319e0e3526db4 (diff)
downloadlinux-linaro-stable-8eef05dd3e70233f3e391774d612dab44c3f023b.tar.gz
checkpatch: Warn on code with 6+ tab indentation
Overly indented code should be refactored. Suggest refactoring excessive indentation of of if/else/for/do/while/switch statements. For example: $ cat t.c #include <stdio.h> #include <stdlib.h> int main(int argc, char **argv) { if (1) if (2) if (3) if (4) if (5) if (6) if (7) if (8) ; return 0; } $ ./scripts/checkpatch.pl -f t.c WARNING: Too many leading tabs - consider code refactoring #12: FILE: t.c:12: + if (6) WARNING: Too many leading tabs - consider code refactoring #13: FILE: t.c:13: + if (7) WARNING: Too many leading tabs - consider code refactoring #14: FILE: t.c:14: + if (8) total: 0 errors, 3 warnings, 17 lines checked t.c has style problems, please review. If any of these errors are false positives, please report them to the maintainer, see CHECKPATCH in MAINTAINERS. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rwxr-xr-xscripts/checkpatch.pl6
1 files changed, 6 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e3bfcbe8a520..a3b9782441f9 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1924,6 +1924,12 @@ sub process {
my $pre_ctx = "$1$2";
my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
+
+ if ($line =~ /^\+\t{6,}/) {
+ WARN("DEEP_INDENTATION",
+ "Too many leading tabs - consider code refactoring\n" . $herecurr);
+ }
+
my $ctx_cnt = $realcnt - $#ctx - 1;
my $ctx = join("\n", @ctx);