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[Qemu-devel] [PATCH 1/1] checkpatch: check for malformed comment block.


From: Wainer dos Santos Moschetta
Subject: [Qemu-devel] [PATCH 1/1] checkpatch: check for malformed comment block.
Date: Thu, 13 Dec 2018 12:55:52 -0500

Currently scripts/checkpatch.pl does not check if multiline
comments follow the QEMU's coding sytle.

It is added a check for multiline comments that warns about:
    1. block doesn't begin on its own line.
    2. line in the block doesn't start with asterisk.
    3. block doesn't end on its own line.

Signed-off-by: Wainer dos Santos Moschetta <address@hidden>
---
 scripts/checkpatch.pl | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 60f6f89a27..5abb579ed7 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1858,6 +1858,38 @@ sub process {
                $line =~ s@//.*@@;
                $opline =~ s@//.*@@;
 
+# check for malformed comment block.
+               if ($rawline =~ m{/\*} && $rawline !~ m{\*\/}) {
+                       if ($rawline !~ m{^.\s*/\*+$}) {
+                               WARN("comment block should begin on its own" .
+                                       " line\n" . $herecurr);
+                       }
+
+                       my $rel_line = 1;
+                       my $reported = 0;
+                       my $comment_line = '';
+                       my $herecurr = '';
+                       do {
+                               $comment_line = $rawlines[$rel_line + $linenr
+                                       - 1];
+                               $herecurr = "#".($linenr + $rel_line) .
+                                       ": FILE: ".$realfile .
+                                       ":".($realline + $rel_line)."\n" .
+                                       $comment_line."\n";
+                               if (!$reported && $comment_line !~ m{^.\s*\*}) {
+                                       WARN("line in comment block should" .
+                                               " start with asterisk\n" .
+                                               $herecurr);
+                                       $reported = 1;
+                               }
+                               $rel_line++;
+                       } while ($comment_line && $comment_line !~ m{\*\/});
+
+                       if ($comment_line && $comment_line !~ m{^.\s*\*+\/}) {
+                               WARN("comment block should end on its own" .
+                                       " line\n".$herecurr);
+                       }
+               }
 # check for global initialisers.
                if ($line =~ 
/^.$Type\s*$Ident\s*(?:\s+$Modifier)*\s*=\s*(0|NULL|false)\s*;/) {
                        ERROR("do not initialise globals to 0 or NULL\n" .
-- 
2.19.1




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