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authorAndy Whitcroft <apw@shadowen.org>2008-07-24 08:29:03 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 21:47:26 +0400
commitf5fe35dd95549b1b419cdeb2ec3fe61fda94fa93 (patch)
treedbb0d8a8951f5b376900e0c26a392d9ccaafef27 /scripts
parent53210168feeff9a3c780bd42f69936d4c12381d5 (diff)
downloadlinux-f5fe35dd95549b1b419cdeb2ec3fe61fda94fa93.tar.xz
checkpatch: condition/loop indent checks
Check to see if the block/statement which a condition or loop introduces is indented correctly. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-xscripts/checkpatch.pl59
1 files changed, 55 insertions, 4 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 8616baee0aeb..13d7a330b5dd 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1167,10 +1167,10 @@ sub process {
}
# Check for potential 'bare' types
- my ($stat, $cond);
+ my ($stat, $cond, $line_nr_next, $remain_next);
if ($realcnt && $line =~ /.\s*\S/) {
- ($stat, $cond) = ctx_statement_block($linenr,
- $realcnt, 0);
+ ($stat, $cond, $line_nr_next, $remain_next) =
+ ctx_statement_block($linenr, $realcnt, 0);
$stat =~ s/\n./\n /g;
$cond =~ s/\n./\n /g;
@@ -1712,7 +1712,8 @@ sub process {
ERROR("space required before the open parenthesis '('\n" . $herecurr);
}
-# Check for illegal assignment in if conditional.
+# Check for illegal assignment in if conditional -- and check for trailing
+# statements after the conditional.
if ($line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
my ($s, $c) = ($stat, $cond);
@@ -1732,6 +1733,56 @@ sub process {
}
}
+# Check relative indent for conditionals and blocks.
+ if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
+ my ($s, $c) = ($stat, $cond);
+
+ substr($s, 0, length($c), '');
+
+ # Make sure we remove the line prefixes as we have
+ # none on the first line, and are going to readd them
+ # where necessary.
+ $s =~ s/\n./\n/gs;
+
+ # We want to check the first line inside the block
+ # starting at the end of the conditional, so remove:
+ # 1) any blank line termination
+ # 2) any opening brace { on end of the line
+ # 3) any do (...) {
+ my $continuation = 0;
+ my $check = 0;
+ $s =~ s/^.*\bdo\b//;
+ $s =~ s/^\s*{//;
+ if ($s =~ s/^\s*\\//) {
+ $continuation = 1;
+ }
+ if ($s =~ s/^\s*\n//) {
+ $check = 1;
+ }
+
+ # Also ignore a loop construct at the end of a
+ # preprocessor statement.
+ if (($prevline =~ /^.\s*#\s*define\s/ ||
+ $prevline =~ /\\\s*$/) && $continuation == 0) {
+ $check = 0;
+ }
+
+ # Ignore the current line if its is a preprocessor
+ # line.
+ if ($s =~ /^\s*#\s*/) {
+ $check = 0;
+ }
+
+ my (undef, $sindent) = line_stats("+" . $s);
+
+ ##print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s>\n";
+
+ if ($check && (($sindent % 8) != 0 ||
+ ($sindent <= $indent && $s ne ''))) {
+ WARN("suspect code indent for conditional statements\n" . $herecurr);
+ }
+ }
+
# Check for bitwise tests written as boolean
if ($line =~ /
(?: