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authorNicolas Palix <npalix@diku.dk>2010-08-24 17:39:12 +0200
committerMichal Marek <mmarek@suse.cz>2010-08-31 11:43:13 +0200
commit49ab7a39136566eb8312e770031af4182c9f2967 (patch)
treedd149432c1cb4e872535e1f1c12d78ef4144c928 /scripts/coccinelle
parent033456e2c507a9b804de56dd258af55f03764334 (diff)
downloadvexpress-lsk-49ab7a39136566eb8312e770031af4182c9f2967.tar.gz
Coccinelle: Add misc/ifcol.cocci
Find confusingly indented code in or after an if. An if branch should be indented. The code following an if should not be indented. Sometimes, code after an if that is indented is actually intended to be part of the if branch. This has a high rate of false positives, because Coccinelle's column calculation does not distinguish between spaces and tabs, so code that is not visually aligned may be considered to be in the same column. Signed-off-by: Nicolas Palix <npalix@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/coccinelle')
-rw-r--r--scripts/coccinelle/misc/ifcol.cocci48
1 files changed, 48 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/ifcol.cocci b/scripts/coccinelle/misc/ifcol.cocci
new file mode 100644
index 00000000000..b7ed91dbeb9
--- /dev/null
+++ b/scripts/coccinelle/misc/ifcol.cocci
@@ -0,0 +1,48 @@
+/// Find confusingly indented code in or after an if. An if branch should
+/// be indented. The code following an if should not be indented.
+/// Sometimes, code after an if that is indented is actually intended to be
+/// part of the if branch.
+///
+/// This has a high rate of false positives, because Coccinelle's column
+/// calculation does not distinguish between spaces and tabs, so code that
+/// is not visually aligned may be considered to be in the same column.
+///
+// Confidence: Low
+// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
+// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
+// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
+// URL: http://coccinelle.lip6.fr/
+// Comments:
+// Options: -no_includes -include_headers
+
+virtual org
+virtual report
+
+@r disable braces4@
+position p1,p2;
+statement S1,S2;
+@@
+
+(
+if (...) { ... }
+|
+if (...) S1@p1 S2@p2
+)
+
+@script:python depends on org@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+if (p1[0].column == p2[0].column):
+ cocci.print_main("branch",p1)
+ cocci.print_secs("after",p2)
+
+@script:python depends on report@
+p1 << r.p1;
+p2 << r.p2;
+@@
+
+if (p1[0].column == p2[0].column):
+ msg = "code aligned with following code on line %s" % (p2[0].line)
+ coccilib.report.print_report(p1[0],msg)