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contrib/coccinelle: add basic Coccinelle transforms

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Coccinelle (http://coccinelle.lip6.fr/) is a program which performs
mechanical transformations on C programs using semantic patches.  These
semantic patches can be used to implement automatic refactoring and
maintenance tasks.

Add a set of basic semantic patches to convert common patterns related
to the struct object_id transformation, as well as a README.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson 2016-06-24 23:09:20 +00:00 committed by Junio C Hamano
parent 55c529a700
commit db1d80b8fa
2 changed files with 97 additions and 0 deletions
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2
contrib/coccinelle/README Normal file
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This directory provides examples of Coccinelle (http://coccinelle.lip6.fr/)
semantic patches that might be useful to developers.

95
contrib/coccinelle/object_id.cocci Normal file
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@@
expression E1;
@@
- is_null_sha1(E1.hash)
+ is_null_oid(&E1)
@@
expression E1;
@@
- is_null_sha1(E1->hash)
+ is_null_oid(E1)
@@
expression E1;
@@
- sha1_to_hex(E1.hash)
+ oid_to_hex(&E1)
@@
expression E1;
@@
- sha1_to_hex(E1->hash)
+ oid_to_hex(E1)
@@
expression E1;
@@
- sha1_to_hex_r(E1.hash)
+ oid_to_hex_r(&E1)
@@
expression E1;
@@
- sha1_to_hex_r(E1->hash)
+ oid_to_hex_r(E1)
@@
expression E1;
@@
- hashclr(E1.hash)
+ oidclr(&E1)
@@
expression E1;
@@
- hashclr(E1->hash)
+ oidclr(E1)
@@
expression E1, E2;
@@
- hashcmp(E1.hash, E2.hash)
+ oidcmp(&E1, &E2)
@@
expression E1, E2;
@@
- hashcmp(E1->hash, E2->hash)
+ oidcmp(E1, E2)
@@
expression E1, E2;
@@
- hashcmp(E1->hash, E2.hash)
+ oidcmp(E1, &E2)
@@
expression E1, E2;
@@
- hashcmp(E1.hash, E2->hash)
+ oidcmp(&E1, E2)
@@
expression E1, E2;
@@
- hashcpy(E1.hash, E2.hash)
+ oidcpy(&E1, &E2)
@@
expression E1, E2;
@@
- hashcpy(E1->hash, E2->hash)
+ oidcpy(E1, E2)
@@
expression E1, E2;
@@
- hashcpy(E1->hash, E2.hash)
+ oidcpy(E1, &E2)
@@
expression E1, E2;
@@
- hashcpy(E1.hash, E2->hash)
+ oidcpy(&E1, E2)