checkpatch: add checks for question mark and colon spacing
Add checks for the question mark colon operator spacing, and also check the other uses of colon. Colon means a number of things: - it introduces the else part of the ?: operator, - it terminates a goto label, - it terminates the case value, - it separates the identifier from the bit size on bit fields, and - it is used to introduce option types in asm(). 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>
This commit is contained in:
Andy Whitcroft
Linus Torvalds
parent
d250658658
commit
1f65f947a6
1 changed files with 72 additions and 9 deletions
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@ -689,17 +689,20 @@ sub cat_vet {
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my $av_preprocessor = 0;
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my $av_pending;
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my @av_paren_type;
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my $av_pend_colon;
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sub annotate_reset {
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$av_preprocessor = 0;
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$av_pending = '_';
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@av_paren_type = ('E');
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$av_pend_colon = 'O';
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}
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sub annotate_values {
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my ($stream, $type) = @_;
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my $res;
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my $var = '_' x length($stream);
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my $cur = $stream;
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print "$stream\n" if ($dbg_values > 1);
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@ -784,7 +787,12 @@ sub annotate_values {
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$av_pending = 'N';
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$type = 'N';
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} elsif ($cur =~/^(return|case|else|goto)/o) {
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} elsif ($cur =~/^(case)/o) {
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print "CASE($1)\n" if ($dbg_values > 1);
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$av_pend_colon = 'C';
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$type = 'N';
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} elsif ($cur =~/^(return|else|goto)/o) {
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print "KEYWORD($1)\n" if ($dbg_values > 1);
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$type = 'N';
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@ -809,6 +817,15 @@ sub annotate_values {
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$type = 'V';
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$av_pending = 'V';
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} elsif ($cur =~ /^($Ident\s*):/) {
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if ($type eq 'E') {
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$av_pend_colon = 'L';
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} elsif ($type eq 'T') {
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$av_pend_colon = 'B';
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}
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print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1);
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$type = 'V';
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} elsif ($cur =~ /^($Ident|$Constant)/o) {
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print "IDENT($1)\n" if ($dbg_values > 1);
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$type = 'V';
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@ -820,8 +837,24 @@ sub annotate_values {
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} elsif ($cur =~/^(;|{|})/) {
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print "END($1)\n" if ($dbg_values > 1);
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$type = 'E';
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$av_pend_colon = 'O';
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} elsif ($cur =~ /^(;|\?|:|\[)/o) {
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} elsif ($cur =~ /^(\?)/o) {
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print "QUESTION($1)\n" if ($dbg_values > 1);
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$type = 'N';
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} elsif ($cur =~ /^(:)/o) {
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print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1);
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substr($var, length($res), 1, $av_pend_colon);
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if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') {
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$type = 'E';
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} else {
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$type = 'N';
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}
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$av_pend_colon = 'O';
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} elsif ($cur =~ /^(;|\[)/o) {
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print "CLOSE($1)\n" if ($dbg_values > 1);
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$type = 'N';
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@ -840,7 +873,7 @@ sub annotate_values {
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}
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}
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return $res;
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return ($res, $var);
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}
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sub possible {
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@ -1294,12 +1327,14 @@ sub process {
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# Track the 'values' across context and added lines.
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my $opline = $line; $opline =~ s/^./ /;
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my $curr_values = annotate_values($opline . "\n", $prev_values);
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my ($curr_values, $curr_vars) =
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annotate_values($opline . "\n", $prev_values);
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$curr_values = $prev_values . $curr_values;
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if ($dbg_values) {
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my $outline = $opline; $outline =~ s/\t/ /g;
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print "$linenr > .$outline\n";
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print "$linenr > $curr_values\n";
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print "$linenr > $curr_vars\n";
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}
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$prev_values = substr($curr_values, -1);
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@ -1490,7 +1525,8 @@ sub process {
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<<=|>>=|<=|>=|==|!=|
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\+=|-=|\*=|\/=|%=|\^=|\|=|&=|
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=>|->|<<|>>|<|>|=|!|~|
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&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%
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&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%|
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\?|:
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}x;
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my @elements = split(/($ops|;)/, $opline);
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my $off = 0;
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@ -1554,6 +1590,9 @@ sub process {
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# print "UNARY: <$op_left$op_type $is_unary $a:$op:$c> <$ca:$op:$cc> <$unary_ctx>\n";
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#}
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# Get the full operator variant.
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my $opv = $op . substr($curr_vars, $off, 1);
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# Ignore operators passed as parameters.
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if ($op_type ne 'V' &&
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$ca =~ /\s$/ && $cc =~ /^\s*,/) {
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@ -1571,8 +1610,10 @@ sub process {
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# // is a comment
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} elsif ($op eq '//') {
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# -> should have no spaces
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} elsif ($op eq '->') {
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# No spaces for:
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# ->
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# : when part of a bitfield
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} elsif ($op eq '->' || $opv eq ':B') {
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if ($ctx =~ /Wx.|.xW/) {
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ERROR("spaces prohibited around that '$op' $at\n" . $hereptr);
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}
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@ -1628,11 +1669,33 @@ sub process {
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$hereptr);
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}
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# A colon needs no spaces before when it is
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# terminating a case value or a label.
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} elsif ($opv eq ':C' || $opv eq ':L') {
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if ($ctx =~ /Wx./) {
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ERROR("space prohibited before that '$op' $at\n" . $hereptr);
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}
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# All the others need spaces both sides.
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} elsif ($ctx !~ /[EWC]x[CWE]/) {
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my $ok = 0;
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# Ignore email addresses <foo@bar>
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if (!($op eq '<' && $cb =~ /$;\S+\@\S+>/) &&
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!($op eq '>' && $cb =~ /<\S+\@\S+$;/)) {
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if (($op eq '<' &&
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$cc =~ /^\S+\@\S+>/) ||
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($op eq '>' &&
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$ca =~ /<\S+\@\S+$/))
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{
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$ok = 1;
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}
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# Ignore ?:
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if (($opv eq ':O' && $ca =~ /\?$/) ||
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($op eq '?' && $cc =~ /^:/)) {
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$ok = 1;
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}
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if ($ok == 0) {
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ERROR("spaces required around that '$op' $at\n" . $hereptr);
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}
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}
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