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Subject: Re: Safe index for Groovy 3
From: "ocs@ocs.cz" <ocs@ocs.cz>
In-Reply-To: <1478621298812-5736558.post@n5.nabble.com>
Date: Tue, 8 Nov 2016 17:31:58 +0100
Cc: dev@groovy.incubator.apache.org
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Message-Id: <8F0E7347-05E3-48A1-A4D4-8E4873305C11@ocs.cz>
References: <1478621298812-5736558.post@n5.nabble.com>
To: dev@groovy.apache.org,
 Daniel Sun <realbluesun@hotmail.com>
archived-at: Tue, 08 Nov 2016 16:32:17 -0000

Hi there,

>       Any thoughts?

Does it support properly "foo[null]", too?

That aside, I would just again like to advocate for an, let's say, =
=E2=80=9Efull-safe=E2=80=9C mode, where one could set some switch =
(probably would need to be a compile-time one I guess) to get implicitly =
the =E2=80=9Esafe mode=E2=80=9C for _all_ expressions (methods, indexes, =
operators -- have I forgot anything?) without a need to write all those =
pesky ?'s explicitly.

Thanks and all the best,
OC

> On 8. 11. 2016, at 5:08 PM, Daniel Sun <realbluesun@hotmail.com> =
wrote:
>=20
> Hi all,
>=20
>      The new parser supports safe index now, which is proposed by Paul =
King
> :)
>=20
>      Here are some example code:
>=20
> assert null =3D=3D null?[1];
> assert null =3D=3D null?[1]?[1, 2];
> assert null =3D=3D null?[1]?[1, 2]?[1, 2, 3];
>=20
> def a =3D null;
> assert null =3D=3D a?[1, 2];
>=20
> def f() {return null}
> assert null =3D=3D f()?[1];
>=20
>       More information can be found at the safeIndex branch of
> groovy-parser
> project(https://github.com/danielsun1106/groovy-parser/tree/safeIndex)
>=20
>       Any thoughts?
>=20
>       BTW, the antlr4 branch of apache/groovy is very old, I am going =
to
> try to update it with the master.
>=20
> Cheers,
> Daniel.Sun
>=20
>=20
>=20
>=20
>=20
> --
> View this message in context: =
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