linux-kernel - Re: [PATCH v2] Coccinelle: Add misc/boolconv.cocci

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Date:   Mon, 17 Oct 2016 22:54:47 +0200 (CEST)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     "Andrew F. Davis" <afd@...com>
cc:     Julia Lawall <Julia.Lawall@...6.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Nicolas Palix <nicolas.palix@...g.fr>,
        Michal Marek <mmarek@...e.com>, cocci@...teme.lip6.fr,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] Coccinelle: Add misc/boolconv.cocci

On Mon, 17 Oct 2016, Andrew F. Davis wrote:

> Add a script to check for unneeded conversions to bool.

What changed since the previous version?

julia


>
> Signed-off-by: Andrew F. Davis <afd@...com>
> Acked-by: Julia Lawall <julia.lawall@...6.fr>
> ---
>  scripts/coccinelle/misc/boolconv.cocci | 90 ++++++++++++++++++++++++++++++++++
>  1 file changed, 90 insertions(+)
>  create mode 100644 scripts/coccinelle/misc/boolconv.cocci
>
> diff --git a/scripts/coccinelle/misc/boolconv.cocci b/scripts/coccinelle/misc/boolconv.cocci
> new file mode 100644
> index 0000000..33c464d
> --- /dev/null
> +++ b/scripts/coccinelle/misc/boolconv.cocci
> @@ -0,0 +1,90 @@
> +/// Remove unneeded conversion to bool
> +///
> +//# Relational and logical operators evaluate to bool,
> +//# explicit conversion is overly verbose and unneeded.
> +//
> +// Copyright: (C) 2016 Andrew F. Davis <afd@...com> GPLv2.
> +
> +virtual patch
> +virtual context
> +virtual org
> +virtual report
> +
> +//----------------------------------------------------------
> +//  For patch mode
> +//----------------------------------------------------------
> +
> +@...ends on patch@
> +expression A, B;
> +symbol true, false;
> +@@
> +
> +(
> +  A == B
> +|
> +  A != B
> +|
> +  A > B
> +|
> +  A < B
> +|
> +  A >= B
> +|
> +  A <= B
> +|
> +  A && B
> +|
> +  A || B
> +)
> +- ? true : false
> +
> +//----------------------------------------------------------
> +//  For context mode
> +//----------------------------------------------------------
> +
> +@r depends on !patch@
> +expression A, B;
> +symbol true, false;
> +position p;
> +@@
> +
> +(
> +  A == B
> +|
> +  A != B
> +|
> +  A > B
> +|
> +  A < B
> +|
> +  A >= B
> +|
> +  A <= B
> +|
> +  A && B
> +|
> +  A || B
> +)
> +* ? true : false@p
> +
> +//----------------------------------------------------------
> +//  For org mode
> +//----------------------------------------------------------
> +
> +@...ipt:python depends on r&&org@
> +p << r.p;
> +@@
> +
> +msg = "WARNING: conversion to bool not needed here"
> +coccilib.org.print_todo(p[0], msg)
> +
> +//----------------------------------------------------------
> +//  For report mode
> +//----------------------------------------------------------
> +
> +@...ipt:python depends on r&&report@
> +p << r.p;
> +@@
> +
> +msg = "WARNING: conversion to bool not needed here"
> +coccilib.report.print_report(p[0], msg)
> --
> 2.10.1
>
>