coccinelle: misc: add excluded_middle.cocci script

// SPDX-License-Identifier: GPL-2.0-only

///

/// Condition !A || A && B is equivalent to !A || B.

///

// Confidence: High

// Copyright: (C) 2020 Denis Efremov ISPRAS

// Options: --no-includes --include-headers

virtual patch

virtual context

virtual org

virtual report

@r depends on !patch@

expression A, B;

position p;

@@

* !A || (A &&@p B)

@depends on patch@

expression A, B;

@@

  !A ||

-       (A && B)

+       B

@script:python depends on report@

p << r.p;

@@

coccilib.report.print_report(p[0], "WARNING !A || A && B is equivalent to !A || B")

@script:python depends on org@

p << r.p;

@@

coccilib.org.print_todo(p[0], "WARNING !A || A && B is equivalent to !A || B")