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authorEduardo Habkost <ehabkost@redhat.com>2016-06-13 18:57:58 -0300
committerMarkus Armbruster <armbru@redhat.com>2016-06-20 16:38:13 +0200
commit9be385980d37e8f4fd33f605f5fb1c3d144170a8 (patch)
treed4516d2305c01fabda776667acdb48c48cb105af /scripts/coccinelle
parent6b62d961373e0327f2af8fb77d6d5d6308864180 (diff)
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coccinelle: Remove unnecessary variables for function return value
Use Coccinelle script to replace 'ret = E; return ret' with 'return E'. The script will do the substitution only when the function return type and variable type are the same. Manual fixups: * audio/audio.c: coding style of "read (...)" and "write (...)" * block/qcow2-cluster.c: wrap line to make it shorter * block/qcow2-refcount.c: change indentation of wrapped line * target-tricore/op_helper.c: fix coding style of "remainder|quotient" * target-mips/dsp_helper.c: reverted changes because I don't want to argue about checkpatch.pl * ui/qemu-pixman.c: fix line indentation * block/rbd.c: restore blank line between declarations and statements Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Message-Id: <1465855078-19435-4-git-send-email-ehabkost@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Unused Coccinelle rule name dropped along with a redundant comment; whitespace touched up in block/qcow2-cluster.c; stale commit message paragraph deleted] Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'scripts/coccinelle')
-rw-r--r--scripts/coccinelle/return_directly.cocci19
1 files changed, 19 insertions, 0 deletions
diff --git a/scripts/coccinelle/return_directly.cocci b/scripts/coccinelle/return_directly.cocci
new file mode 100644
index 0000000..48680f2
--- /dev/null
+++ b/scripts/coccinelle/return_directly.cocci
@@ -0,0 +1,19 @@
+// replace 'R = X; return R;' with 'return R;'
+@@
+identifier VAR;
+expression E;
+type T;
+identifier F;
+@@
+ T F(...)
+ {
+ ...
+- T VAR;
+ ... when != VAR
+
+- VAR =
++ return
+ E;
+- return VAR;
+ ... when != VAR
+ }