zephyr/scripts/coccinelle/unsigned_suffix.cocci
Patrik Flykt 1b48cb6dc1 scripts/coccinelle: Add Coccinelle script for unsigned values
Add a Coccinelle script that adds an 'U' to values assigned to
unsigned variables, according ot MISRA-C rule 7.2.

Add a 'report' mode to the script that can be used by developer/CI
and a 'patch' mode that should do the heavy lifting.

Signed-off-by: Patrik Flykt <patrik.flykt@intel.com>
2018-12-04 22:51:56 -05:00

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/// Find assignments to unsigned variables and add an 'U' to the value
// Copyright: (C) 2018 Intel Corporation
// Copyright: (C) 2018 Himanshu Jha
// Copyright: (C) 2018 Julia Lawall, Inria/LIP6
// SPDX-License-Identifier: Apache-2.0
// Confidence: High
virtual patch
virtual report
@r_unsigned@
typedef uint8_t, uint16_t, uint32_t, uint64_t, u8_t, u16_t, u32_t, u64_t;
{unsigned char, unsigned short, unsigned int, uint8_t, uint16_t, uint32_t, uint64_t, u8_t, u16_t, u32_t, u64_t} v;
constant C;
position p;
@@
v = C@p
@script:python r_rewrite@
C << r_unsigned.C;
z;
@@
if C.isdigit() != True:
cocci.include_match(False)
coccinelle.z = C + "U"
@r_subst depends on patch@
{unsigned char, unsigned short, unsigned int, uint8_t, uint16_t, uint32_t, uint64_t, u8_t, u16_t, u32_t, u64_t} r_unsigned.v;
constant r_unsigned.C;
identifier r_rewrite.z;
@@
v =
- C
+ z
@script: python depends on report@
p << r_unsigned.p;
@@
msg="WARNING: Unsigned 'U' suffix missing"
coccilib.report.print_report(p[0], msg)