From: Markus Elfring <Markus.Elfring@web.de>
To: git@vger.kernel.org
Cc: "René Scharfe" <l.s.r@web.de>
Subject: [PATCH] coccinelle: improve array.cocci
Date: Mon, 18 Nov 2019 17:10:33 +0100 [thread overview]
Message-ID: <0d9cf772-268d-bd00-1cbb-0bbbec9dfc9a@web.de> (raw)
In-Reply-To: <f28f5fb8-2814-9df5-faf2-7146ed1a1f4d@web.de>
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 18 Nov 2019 17:00:37 +0100
This script contained transformation rules for the semantic patch language
which used similar code.
1. Delete two SmPL rules which were used to transform source code fragments
(pointer expressions) so that the search pattern “sizeof(T)” would work
in the third rule.
See also the topic “coccinelle: adjustments for array.cocci?”:
https://public-inbox.org/git/f28f5fb8-2814-9df5-faf2-7146ed1a1f4d@web.de/
2. Combine the remaining rules by using six SmPL disjunctions.
3. Adjust case distinctions and corresponding metavariables so that
the desired search for update candidates can be more complete.
4. Increase the precision for the specification of required changes.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
contrib/coccinelle/array.cocci | 100 ++++++---------------------------
1 file changed, 18 insertions(+), 82 deletions(-)
diff --git a/contrib/coccinelle/array.cocci b/contrib/coccinelle/array.cocci
index 46b8d2ee11..bcd6ff4793 100644
--- a/contrib/coccinelle/array.cocci
+++ b/contrib/coccinelle/array.cocci
@@ -1,90 +1,26 @@
-@@
-expression dst, src, n, E;
-@@
- memcpy(dst, src, n * sizeof(
-- E[...]
-+ *(E)
- ))
-
@@
type T;
-T *ptr;
-T[] arr;
-expression E, n;
-@@
-(
- memcpy(ptr, E,
-- n * sizeof(*(ptr))
-+ n * sizeof(T)
- )
-|
- memcpy(arr, E,
-- n * sizeof(*(arr))
-+ n * sizeof(T)
- )
-|
- memcpy(E, ptr,
-- n * sizeof(*(ptr))
-+ n * sizeof(T)
- )
-|
- memcpy(E, arr,
-- n * sizeof(*(arr))
-+ n * sizeof(T)
- )
-)
-
-@@
-type T;
-T *dst_ptr;
-T *src_ptr;
-T[] dst_arr;
T[] src_arr;
-expression n;
+expression n, dst_e, src_e;
+expression* dst_p_e, src_p_e;
@@
(
-- memcpy(dst_ptr, src_ptr, (n) * sizeof(T))
-+ COPY_ARRAY(dst_ptr, src_ptr, n)
-|
-- memcpy(dst_ptr, src_arr, (n) * sizeof(T))
-+ COPY_ARRAY(dst_ptr, src_arr, n)
-|
-- memcpy(dst_arr, src_ptr, (n) * sizeof(T))
-+ COPY_ARRAY(dst_arr, src_ptr, n)
-|
-- memcpy(dst_arr, src_arr, (n) * sizeof(T))
-+ COPY_ARRAY(dst_arr, src_arr, n)
-)
-
-@@
-type T;
-T *dst;
-T *src;
-expression n;
-@@
(
-- memmove(dst, src, (n) * sizeof(*dst));
-+ MOVE_ARRAY(dst, src, n);
-|
-- memmove(dst, src, (n) * sizeof(*src));
-+ MOVE_ARRAY(dst, src, n);
+-memcpy
++COPY_ARRAY
|
-- memmove(dst, src, (n) * sizeof(T));
-+ MOVE_ARRAY(dst, src, n);
+-memmove
++MOVE_ARRAY
+)
+ (
+ dst_e,
+ src_e
+- , (n) * \( sizeof(T) \| sizeof( \( *(src_p_e) \| src_e[...] \| src_arr \) ) \)
++ , n
+ )
+|
++ALLOC_ARRAY(
+ dst_p_e
+- = xmalloc((n) * \( sizeof( \( *(src_p_e) \| src_e[...] \| src_arr \) ) \| sizeof(T) \))
++ , n)
)
-
-@@
-type T;
-T *ptr;
-expression n;
-@@
-- ptr = xmalloc((n) * sizeof(*ptr));
-+ ALLOC_ARRAY(ptr, n);
-
-@@
-type T;
-T *ptr;
-expression n;
-@@
-- ptr = xmalloc((n) * sizeof(T));
-+ ALLOC_ARRAY(ptr, n);
--
2.24.0
next prev parent reply other threads:[~2019-11-18 16:10 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-12 15:08 coccinelle: adjustments for array.cocci? Markus Elfring
2019-11-12 18:37 ` René Scharfe
2019-11-13 2:11 ` Junio C Hamano
2019-11-13 8:49 ` Markus Elfring
2019-11-14 2:03 ` Junio C Hamano
2019-11-14 13:15 ` Markus Elfring
2019-11-14 16:41 ` René Scharfe
2019-11-14 17:14 ` Markus Elfring
2019-11-14 17:46 ` René Scharfe
2019-11-15 11:11 ` git-coccinelle: " Markus Elfring
2019-11-15 14:20 ` Markus Elfring
2019-11-15 18:50 ` Markus Elfring
2019-11-16 1:00 ` [Cocci] " Julia Lawall
2019-11-16 6:57 ` Markus Elfring
2019-11-16 8:29 ` Markus Elfring
2019-11-16 17:57 ` Julia Lawall
2019-11-16 18:29 ` Markus Elfring
2019-11-15 20:37 ` coccinelle: " Markus Elfring
2019-11-16 21:13 ` René Scharfe
2019-11-17 7:56 ` Markus Elfring
2019-11-17 13:40 ` René Scharfe
2019-11-17 18:19 ` Markus Elfring
2019-11-19 19:14 ` René Scharfe
2019-11-19 20:21 ` Markus Elfring
2019-11-21 19:01 ` René Scharfe
2019-11-16 16:33 ` Markus Elfring
2019-11-16 21:38 ` René Scharfe
2019-11-17 8:19 ` Markus Elfring
2019-11-17 13:40 ` René Scharfe
2019-11-17 18:36 ` Markus Elfring
2019-11-19 19:15 ` René Scharfe
2019-11-18 16:10 ` Markus Elfring [this message]
2019-11-19 19:15 ` [PATCH] coccinelle: improve array.cocci René Scharfe
2019-11-20 9:01 ` Markus Elfring
2019-11-21 19:02 ` René Scharfe
2019-11-21 19:44 ` Markus Elfring
2019-11-22 15:29 ` SZEDER Gábor
2019-11-22 16:17 ` Markus Elfring
2019-11-22 5:54 ` [PATCH] " Junio C Hamano
2019-11-22 7:34 ` Markus Elfring
2020-01-25 8:23 ` Markus Elfring
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