Thank you all!
2017-05-11 16:18 GMT+09:00 John McCall via swift-evolution < swift-evolution@swift.org>: > On May 11, 2017, at 1:45 AM, Nicholas Maccharoli via swift-evolution < > swift-evolution@swift.org> wrote: > I also strongly agree. > > I can think of no strong argument against this, was this intentional at > one point or a compiler bug? > > > The language design of #if is more complex than it is in C: it is part of > the language grammar, not a separate phase of pre-processing, and must be > specifically supported in every position it appears. > > That said, I agree with Chris and Jordan that supporting #if in any > simple, sequential position in the grammar is an obvious extension of the > existing design and can reasonably be fast-tracked. > > So, can I withdraw my proposal PR on swift-evolution repository now? > Grammatically similar positions where it's hard to dispute the consistency > argument for #if: get-set clauses, precedencegroup declarations. > > A position which would definitely be more useful to prioritize but where > both the language design and the implementation are trickier: attribute > lists. > > John. > > > - Nick > > > On Thu, May 11, 2017 at 2:37 PM, Chris Lattner via swift-evolution < > swift-evolution@swift.org> wrote: > >> I agree with Jordan. >> >> -Chris >> >> On May 10, 2017, at 11:47 AM, Jordan Rose via swift-evolution < >> swift-evolution@swift.org> wrote: >> >> I'm in favor, certainly. I'd personally say this wouldn't even need to go >> through the full evolution process, but I'm not a core team member. >> >> Jordan >> >> >> On May 10, 2017, at 01:32, rintaro ishizaki via swift-evolution < >> swift-evolution@swift.org> wrote: >> >> Hi evolution community, >> >> This proposal allows you to enclose switch cases with #if directive. >> Implementation: https://github.com/apple/swift/pull/9457 >> This is one of the oldest SR issue: >> https://bugs.swift.org/browse/SR-2 >> https://bugs.swift.org/browse/SR-4196 >> >> Thanks! >> Rintaro >> >> >> _______________________________________________ >> swift-evolution mailing list >> swift-evolution@swift.org >> https://lists.swift.org/mailman/listinfo/swift-evolution >> >> >> >> _______________________________________________ >> swift-evolution mailing list >> swift-evolution@swift.org >> https://lists.swift.org/mailman/listinfo/swift-evolution >> >> > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution > > > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution > >
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