From: Dmitry Gutov <dgutov@yandex.ru>
To: emacs-devel@gnu.org, Eli Zaretskii <eliz@gnu.org>
Subject: Re: [Emacs-diffs] emacs-25 504696d: Etags: yet another improvement in Ruby tags
Date: Thu, 4 Feb 2016 02:46:45 +0300 [thread overview]
Message-ID: <56B29165.3040404@yandex.ru> (raw)
In-Reply-To: <E1aR0FM-0000mG-Up@vcs.savannah.gnu.org>
On 02/03/2016 07:25 PM, Eli Zaretskii wrote:
> --- a/test/etags/ruby-src/test1.ru
> +++ b/test/etags/ruby-src/test1.ru
> @@ -24,10 +24,14 @@ module A
> end
> def X
Just noticed this. attr_X calls will not, as a rule, be inside a method
definition (which is what 'def X' is).
If an attr_X call is inside a method definition, we're unlikely to be
able to make much sense of it. Most likely, the arguments will be local
variables, not Symbol literals. It's also likely that the target of this
call in that kind of situation won't be the current class.
Anyway, the example shouldn't put attr_X calls inside a method
definition, or it gives an impression that we handle this situation
intentionally, or somehow differently from the usual case. Whereas we
could as well skip those tags altogether (but we don't really have to,
as long as we only generate non-qualified tags, and check that every
argument is a Symbol literal, i.e. it starts with a colon).
> attr_reader :foo
> - attr_reader :read1, :read2; attr_writer :write1, :write2
> - attr_writer :bar
> + attr_reader :read1 , :read2; attr_writer :write1, :write2
> + attr_writer :bar,
> + :baz,
> + :more
> attr_accessor :tee
> - alias_method :qux, :tee
> + alias_method :qux, :tee, attr_accessor :bogus
This one is a bit weird as well:
- An alias_method call with three arguments will raise an ArgumentError.
- If it didn't, the 'attr_accessor :bogus' calls would raise a
SyntaxError, due to evaluation rules. However, an attr_X call can be
inside an expression, such as:
class C
puts(attr_accessor :bogus)
end
This is not a typical case, we don't need to handle it, but it's odd to
see a test case that implies that this example is invalid, and we
somehow prohibit it. Hopefully, this observation will allow you to
simplify some code.
next parent reply other threads:[~2016-02-03 23:46 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20160203162536.2954.45438@vcs.savannah.gnu.org>
[not found] ` <E1aR0FM-0000mG-Up@vcs.savannah.gnu.org>
2016-02-03 23:46 ` Dmitry Gutov [this message]
2016-02-04 3:48 ` [Emacs-diffs] emacs-25 504696d: Etags: yet another improvement in Ruby tags Eli Zaretskii
2016-02-04 9:36 ` Dmitry Gutov
2016-02-04 17:28 ` Eli Zaretskii
2016-02-05 5:26 ` Dmitry Gutov
2016-02-05 5:29 ` Dmitry Gutov
2016-02-05 9:14 ` Eli Zaretskii
2016-02-05 10:11 ` Dmitry Gutov
2016-02-05 11:15 ` Eli Zaretskii
2016-02-05 11:26 ` Eli Zaretskii
2016-02-05 12:15 ` Dmitry Gutov
2016-02-05 14:34 ` Eli Zaretskii
2016-02-06 9:09 ` Eli Zaretskii
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