Messages in this thread | | | Date | Tue, 24 Jul 2007 10:06:51 +0100 | From | Andy Whitcroft <> | Subject | Re: [PATCH] update checkpatch.pl to version 0.08 |
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Kok, Auke wrote: > Andy Whitcroft wrote: >> This version brings a number of new checks, and a number of bug >> fixes. Of note: >> >> - warnings for multiple assignments per line > > > This is bugged. e.g. the following line will hit this exception check: > > int i = some_function(a, b, c);
Yep that is plainly wrong. Will sort that one out.
>> - warnings for multiple declarations per line >> - checks for single statement blocks with braces >> >> This patch includes an update for feature-removal-schedule.txt to >> better target checks. >> >> Andy Whitcroft (12): >> check for single statement braced blocks >> >> Signed-off-by: Andy Whitcroft <apw@shadowen.org> >> --- >> >> +# check for redundant bracing round if etc >> + if ($line =~ /\b(if|while|for|else)\b/) { >> + # Locate the end of the opening statement. >> + my @control = ctx_statement($linenr, $realcnt, 0); >> + my $nr = $linenr + (scalar(@control) - 1); >> + my $cnt = $realcnt - (scalar(@control) - 1); >> + >> + my $off = $realcnt - $cnt; >> + #print "$off: line<$line>end<" . $lines[$nr - 1] . ">\n"; >> + >> + # If this is is a braced statement group check it >> + if ($lines[$nr - 1] =~ /{\s*$/) { >> + my ($lvl, @block) = ctx_block_level($nr, $cnt); >> + >> + my $stmt = join(' ', @block); >> + $stmt =~ s/^[^{]*{//; >> + $stmt =~ s/}[^}]*$//; >> + >> + #print "block<" . join(' ', @block) . "><" . >> scalar(@block) . ">\n"; >> + #print "stmt<$stmt>\n\n"; >> + >> + # Count the ;'s if there is fewer than two >> + # then there can only be one statement, >> + # if there is a brace inside we cannot >> + # trivially detect if its one statement. >> + # Also nested if's often require braces to >> + # disambiguate the else binding so shhh there. >> + my @semi = ($stmt =~ /;/g); >> + ##print "semi<" . scalar(@semi) . ">\n"; >> + if ($lvl == 0 && scalar(@semi) < 2 && >> + $stmt !~ /{/ && $stmt !~ /\bif\b/) { >> + my $herectx = "$here\n" . join("\n", >> @control, @block[1 .. $#block]) . "\n"; >> + shift(@block); >> + ERROR("braces {} are not necessary for single >> statement blocks\n" . $herectx); > > > This is a royal pain, since it now throws an ERROR for the obviously > preferable piece of code below: > > if (err) { > do_something(); > return -ERR; > } else { > do_somthing_else(); > }
Hmmm, is that obviouly nicer than the below? Its fully a line longer for no benefit. But ignoring that, this seems to have snuck in to CodingStyle hmmm ... will see what I can do if anything to stop these being picked up I guess.
if (err) { do_something(); return -ERR; } else do_something_else();
Andrew, as you merged the change to CodingStyle I'll take that as your being ok with these being accepted.
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