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checkpatch: add --fix option for some TRAILING_STATEMENTS 

Single line code like:

	if (foo) bar;

should generally be written:

	if (foo)
		bar;

Add a --fix test to do so.

This fix is not done when an ASSIGN_IN_IF in the same line exists.

Link: https://lkml.kernel.org/r/20220128185924.80137-2-joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Dwaipayan Ray <dwaipayanray1@gmail.com>
Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2022-03-23 16:05:59 -07:00 committed by Linus Torvalds
parent 6e8f42dc9c
commit 481efd7bd6
1 changed files with 16 additions and 2 deletions
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18
scripts/checkpatch.pl
View File

@ -5551,6 +5551,7 @@ sub process {
defined($stat) && defined($cond) &&
$line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
my ($s, $c) = ($stat, $cond);
my $fixed_assign_in_if = 0;
if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) {
if (ERROR("ASSIGN_IN_IF",
@ -5575,6 +5576,7 @@ sub process {
$newline .= ')';
$newline .= " {" if (defined($brace));
fix_insert_line($fixlinenr + 1, $newline);
$fixed_assign_in_if = 1;
}
}
}
@ -5598,8 +5600,20 @@ sub process {
$stat_real = "[...]\n$stat_real";
}
ERROR("TRAILING_STATEMENTS",
"trailing statements should be on next line\n" . $herecurr . $stat_real);
if (ERROR("TRAILING_STATEMENTS",
"trailing statements should be on next line\n" . $herecurr . $stat_real) &&
!$fixed_assign_in_if &&
$cond_lines == 0 &&
$fix && $perl_version_ok &&
$fixed[$fixlinenr] =~ /^\+(\s*)((?:if|while|for)\s*$balanced_parens)\s*(.*)$/) {
my $indent = $1;
my $test = $2;
my $rest = rtrim($4);
if ($rest =~ /;$/) {
$fixed[$fixlinenr] = "\+$indent$test";
fix_insert_line($fixlinenr + 1, "$indent\t$rest");
}
}
}
}