update checkpatch.pl to version 0.06
Update to checkpatch.pl v0.06. Of note:
- do { and else handled correctly as control structures for { matching
- trailing whitespace correctly tripped when line otherwise empty
- support for const, including const foo * const bar
- multiline macros defining values correctly reported
This version of checkpatch.pl can be found at the following URL:
http://www.kernel.org/pub/linux/kernel/people/apw/checkpatch/checkpatch.pl-0.06
Full Changelog:
Andy Whitcroft (14):
Version: 0.06
cleanup the Type regular expression declarations
fix up block counting
end of line counts as a space for ++ and --
do { needs the same checks as if, for et al
handle "const foo * const a" as a valid type
add spacing checks following ;
complete whitespace lines should trip trailing whitespace check
else is also a block control structure
badly formatted else can trip function declaration
detect and report trailing statements after else
types need to be terminated by a boundary
multiline macros defining values should be surrounded by parentheses
soften the wording of the Signed-off-by: warnings
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Cc: "Randy.Dunlap" <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Whitcroft
Linus Torvalds
parent
debee0768e
commit
d8aaf12142
1 changed files with 94 additions and 55 deletions
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@ -9,7 +9,7 @@ use strict;
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my $P = $0;
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$P =~ s@.*/@@g;
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my $V = '0.05';
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my $V = '0.06';
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use Getopt::Long qw(:config no_auto_abbrev);
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@ -271,24 +271,38 @@ sub process {
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my $in_comment = 0;
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my $first_line = 0;
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my $ident = '[A-Za-z\d_]+';
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my $storage = '(?:extern|static)';
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my $sparse = '(?:__user|__kernel|__force|__iomem)';
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my $type = '(?:unsigned\s+)?' .
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'(?:void|char|short|int|long|unsigned|float|double|' .
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'long\s+long|' .
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"struct\\s+${ident}|" .
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"union\\s+${ident}|" .
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"${ident}_t)" .
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"(?:\\s+$sparse)*" .
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'(?:\s*\*+)?';
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my $attribute = '(?:__read_mostly|__init|__initdata)';
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my $Ident = $ident;
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my $Type = $type;
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my $Storage = $storage;
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my $Declare = "(?:$storage\\s+)?$type";
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my $Attribute = $attribute;
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my $Ident = qr{[A-Za-z\d_]+};
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my $Storage = qr{extern|static};
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my $Sparse = qr{__user|__kernel|__force|__iomem};
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my $NonptrType = qr{
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\b
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(?:const\s+)?
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(?:unsigned\s+)?
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(?:
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void|
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char|
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short|
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int|
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long|
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unsigned|
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float|
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double|
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long\s+int|
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long\s+long|
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long\s+long\s+int|
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struct\s+$Ident|
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union\s+$Ident|
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${Ident}_t
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)
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(?:\s+$Sparse)*
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\b
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}x;
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my $Type = qr{
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\b$NonptrType\b
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(?:\s*\*+\s*const|\s*\*+)?
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}x;
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my $Declare = qr{(?:$Storage\s+)?$Type};
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my $Attribute = qr{__read_mostly|__init|__initdata};
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foreach my $line (@lines) {
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$linenr++;
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@ -321,6 +335,7 @@ sub process {
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# blank context lines so we need to count that too.
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if ($line =~ /^( |\+|$)/) {
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$realline++;
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$realcnt-- if ($realcnt != 0);
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# track any sort of multi-line comment. Obviously if
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# the added text or context do not include the whole
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@ -345,8 +360,9 @@ sub process {
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# Track the previous line.
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($prevline, $stashline) = ($stashline, $line);
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($previndent, $stashindent) = ($stashindent, $indent);
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} elsif ($realcnt == 1) {
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$realcnt--;
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}
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$realcnt-- if ($realcnt != 0);
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#make up the handle for any error we report on this line
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$here = "#$linenr: ";
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@ -357,14 +373,11 @@ sub process {
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my $hereprev = "$here\n$prevline\n$line\n\n";
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#check the patch for a signoff:
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if ($line =~ /^\s*Signed-off-by:\s/) {
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$signoff++;
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} elsif ($line =~ /^\s*signed-off-by:/i) {
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if ($line =~ /^\s*signed-off-by:/i) {
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# This is a signoff, if ugly, so do not double report.
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$signoff++;
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if (!($line =~ /^\s*Signed-off-by:/)) {
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print "use Signed-off-by:\n";
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print "Signed-off-by: is the preferred form\n";
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print "$herecurr";
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$clean = 0;
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}
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@ -389,7 +402,7 @@ sub process {
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next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
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#trailing whitespace
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if ($line=~/^\+.*\S\s+$/) {
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if ($line =~ /^\+.*\S\s+$/ || $line =~ /^\+\s+$/) {
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my $herevet = "$here\n" . cat_vet($line) . "\n\n";
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print "trailing whitespace\n";
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print "$herevet";
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@ -525,26 +538,25 @@ sub process {
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}
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# * goes on variable not on type
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if ($line =~ m{[A-Za-z\d_]+(\*+) [A-Za-z\d_]+}) {
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print "\"foo$1 bar\" should be \"foo $1bar\"\n";
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print "$herecurr";
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$clean = 0;
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}
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if ($line =~ m{$Type (\*) [A-Za-z\d_]+} ||
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$line =~ m{[A-Za-z\d_]+ (\*\*+) [A-Za-z\d_]+}) {
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print "\"foo $1 bar\" should be \"foo $1bar\"\n";
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print "$herecurr";
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$clean = 0;
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}
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if ($line =~ m{\([A-Za-z\d_\s]+[A-Za-z\d_](\*+)\)}) {
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if ($line =~ m{\($NonptrType(\*+)(?:\s+const)?\)}) {
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print "\"(foo$1)\" should be \"(foo $1)\"\n";
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print "$herecurr";
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$clean = 0;
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}
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if ($line =~ m{\([A-Za-z\d_\s]+[A-Za-z\d_]\s+(\*+)\s+\)}) {
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} elsif ($line =~ m{\($NonptrType\s+(\*+)(?!\s+const)\s+\)}) {
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print "\"(foo $1 )\" should be \"(foo $1)\"\n";
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print "$herecurr";
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$clean = 0;
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} elsif ($line =~ m{$NonptrType(\*+)(?:\s+const)?\s+[A-Za-z\d_]+}) {
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print "\"foo$1 bar\" should be \"foo $1bar\"\n";
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print "$herecurr";
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$clean = 0;
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} elsif ($line =~ m{$NonptrType\s+(\*+)(?!\s+const)\s+[A-Za-z\d_]+}) {
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print "\"foo $1 bar\" should be \"foo $1bar\"\n";
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print "$herecurr";
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$clean = 0;
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}
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# # no BUG() or BUG_ON()
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@ -581,7 +593,7 @@ sub process {
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# function brace can't be on same line, except for #defines of do while,
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# or if closed on same line
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if (($line=~/[A-Za-z\d_]+\**\s+\**[A-Za-z\d_]+\(.*\).* {/) and
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if (($line=~/$Type\s*[A-Za-z\d_]+\(.*\).* {/) and
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!($line=~/\#define.*do\s{/) and !($line=~/}/)) {
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print "braces following function declarations go on the next line\n";
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print "$herecurr";
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@ -624,7 +636,7 @@ sub process {
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my $ca = substr($opline, $off - 1, 1);
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my $cc = '';
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if (length($opline) >= ($off + length($elements[$n + 1]))) {
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$cc = substr($opline, $off + length($elements[$n + 1]), 1);
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$cc = substr($opline, $off + length($elements[$n + 1]));
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}
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my $ctx = "${a}x${c}";
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@ -636,8 +648,16 @@ sub process {
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##print "<$s1:$op:$s2> <$elements[$n]:$elements[$n + 1]:$elements[$n + 2]>\n";
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# We need ; as an operator. // is a comment.
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if ($op eq ';' or $op eq '//') {
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# ; should have either the end of line or a space or \ after it
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if ($op eq ';') {
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if ($ctx !~ /.x[WE]/ && $cc !~ /^\\/) {
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print "need space after that '$op' $at\n";
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print "$hereptr";
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$clean = 0;
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}
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# // is a comment
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} elsif ($op eq '//') {
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# -> should have no spaces
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} elsif ($op eq '->') {
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@ -649,7 +669,7 @@ sub process {
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# , must have a space on the right.
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} elsif ($op eq ',') {
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if ($ctx !~ /.xW|.xE/ && $cc ne '}') {
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if ($ctx !~ /.xW|.xE/ && $cc !~ /^}/) {
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print "need space after that '$op' $at\n";
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print "$hereptr";
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$clean = 0;
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@ -670,12 +690,12 @@ sub process {
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# unary ++ and unary -- are allowed no space on one side.
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} elsif ($op eq '++' or $op eq '--') {
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if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOB]/) {
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if ($ctx !~ /[WOB]x[^W]/ && $ctx !~ /[^W]x[WOBE]/) {
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print "need space one side of that '$op' $at\n";
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print "$hereptr";
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$clean = 0;
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}
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if ($ctx =~ /Wx./ && $cc eq ';') {
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if ($ctx =~ /Wx./ && $cc =~ /^;/) {
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print "no space before that '$op' $at\n";
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print "$hereptr";
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$clean = 0;
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@ -707,7 +727,7 @@ sub process {
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#
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} elsif ($op eq '*') {
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if ($ca eq '*') {
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if ($cc =~ /\s/) {
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if ($cc =~ /^\s(?!\s*const)/) {
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print "no space after that '$op' $at\n";
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print "$hereptr";
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$clean = 0;
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@ -803,7 +823,7 @@ sub process {
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# if/while/etc brace do not go on next line, unless defining a do while loop,
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# or if that brace on the next line is for something else
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if ($prevline=~/\b(if|while|for|switch)\s*\(/) {
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if ($prevline=~/\b(?:(if|while|for|switch)\s*\(|do\b|else\b)/) {
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my @opened = $prevline=~/\(/g;
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my @closed = $prevline=~/\)/g;
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my $nr_line = $linenr;
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@ -823,14 +843,22 @@ sub process {
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@closed = $prevline=~/\)/g;
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}
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if (($prevline=~/\b(if|while|for|switch)\s*\(.*\)\s*$/) and ($next_line=~/{/) and
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!($next_line=~/\b(if|while|for|switch)/) and !($next_line=~/\#define.*do.*while/)) {
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if (($prevline=~/\b(?:(if|while|for|switch)\s*\(.*\)|do|else)\s*$/) and ($next_line=~/{/) and
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!($next_line=~/\b(?:if|while|for|switch|do|else)\b/) and !($next_line=~/\#define.*do.*while/)) {
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print "That { should be on the previous line\n";
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print "$here\n$display_segment\n$next_line\n\n";
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$clean = 0;
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}
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}
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# if and else should not have general statements after it
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if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/ &&
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$1 !~ /^\s*(?:\sif|{|$)/) {
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print "trailing statements should be on next line\n";
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print "$herecurr";
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$clean = 0;
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}
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# multi-statement macros should be enclosed in a do while loop, grab the
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# first statement and ensure its the whole macro if its not enclosed
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# in a known goot container
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@ -841,11 +869,22 @@ sub process {
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# Grab the first statement, if that is the entire macro
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# its ok. This may start either on the #define line
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# or the one below.
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my $ctx1 = join('', ctx_statement($linenr - 1, $realcnt + 1));
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my $ctx2 = join('', ctx_statement($linenr, $realcnt));
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my $ln = $linenr;
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my $cnt = $realcnt;
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if ($ctx1 =~ /\\$/ && $ctx2 =~ /\\$/) {
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print "Macros with multiple statements should be enclosed in a do - while loop\n";
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# If the macro starts on the define line start there.
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if ($prevline !~ m{^.#\s*define\s*$Ident(?:\([^\)]*\))?\s*\\\s*$}) {
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$ln--;
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$cnt++;
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}
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my $ctx = join('', ctx_statement($ln, $cnt));
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if ($ctx =~ /\\$/) {
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if ($ctx =~ /;/) {
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print "Macros with multiple statements should be enclosed in a do - while loop\n";
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} else {
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print "Macros with complex values should be enclosed in parenthesis\n";
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}
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print "$hereprev";
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$clean = 0;
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}
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