Sorry, what I meant is that they make sense with our language model, but it’s
not surprising that it doesn’t work today. In any case, __shared is not yet
completely implemented or even designed, so it doesn’t matter.
Slava
> On Dec 11, 2017, at 2:05 PM, David Zarzycki <d...@znu.io> wrote:
>
> Hi Slava,
>
> Interesting. Did I make a mistake in my test then? Both __shared @escaping
> and __shared @autoclosure are failing below.
>
> Dave
>
>> On Dec 11, 2017, at 16:58, Slava Pestov via swift-dev <swift-dev@swift.org>
>> wrote:
>>
>> I think perhaps __shared @escaping and __shared @autoclosure should be OK.
>> You’re just passing the context as a +0 value instead of +1. Also __shared
>> varargs make sense for the same reason. But it’s not important to get that
>> working right now.
>>
>> The others look OK.
>>
>> Slava
>>
>>> On Dec 11, 2017, at 1:15 PM, David Zarzycki via swift-dev
>>> <swift-dev@swift.org> wrote:
>>>
>>> Hello! I’m trying to test which ParameterTypeFlags flag combinations are
>>> valid. I wrote the following test case. Are the results “as expected”, or
>>> are some of the failures incorrect?
>>>
>>> // RUN: %target-typecheck-verify-swift
>>>
>>>
>>> //
>>> // isVariadic is NOT compatible with any flag combinations
>>> //
>>> // expected-error@+1 {{@autoclosure must not be used on variadic
>>> parameters}}
>>> func v_and_autoclosure(arg : @autoclosure ()->()...) {}
>>> // expected-error@+1 {{@escaping attribute may only be used in function
>>> parameter position}}
>>> func v_and_escaping(arg : @escaping ()->()...) {}
>>> // expected-error@+1 {{'inout' must not be used on variadic parameters}}
>>> func v_and_inout(arg : inout Int...) {}
>>> // expected-error@+1 {{'__shared' must not be used on variadic parameters}}
>>> func v_and_shared(arg : __shared Int...) {}
>>>
>>> //
>>> // 'inout' is NOT compatible with remaining parameter flag combinations
>>> //
>>> // expected-error@+1 {{parameter must not have multiple '__owned', 'inout',
>>> '__shared', 'var', or 'let' specifiers}}
>>> func inout_and_shared(arg : inout __shared Int) {}
>>> // expected-error@+1 {{'inout' may only be used on parameters}}
>>> func inout_and_escaping(arg : @escaping inout ()->()) {}
>>> // expected-error@+1 {{@escaping attribute may only be used in function
>>> parameter position}}
>>> func escaping_and_inout(arg : inout @escaping ()->()) {}
>>> // expected-error@+1 {{@autoclosure may only be used on parameters}}
>>> func inout_and_autoclosure(arg : inout @autoclosure ()->()) {}
>>> // expected-error@+1 {{'inout' may only be used on parameters}}
>>> func autoclosure_and_inout(arg : @autoclosure inout ()->()) {}
>>>
>>> //
>>> // '__shared' is NOT compatible with remaining parameter flag combinations
>>> //
>>> // expected-error@+1 {{'__shared' may only be used on parameters}}
>>> func autoclosure_and_shared(arg : @autoclosure __shared ()->()) {}
>>> // expected-error@+1 {{@autoclosure may only be used on parameters}}
>>> func shared_and_autoclosure(arg : __shared @autoclosure ()->()) {}
>>> // expected-error@+1 {{'__shared' may only be used on parameters}}
>>> func escaping_and_shared(arg : @escaping __shared ()->()) {}
>>> // expected-error@+1 {{@escaping attribute may only be used in function
>>> parameter position}}
>>> func shared_and_escaping(arg : __shared @escaping ()->()) {}
>>>
>>> //
>>> // @autoclosure and @escaping are the only valid parameter flag combinations
>>> //
>>> func autoclosure_and_escaping(arg : @autoclosure @escaping ()->()) {}
>>> func escaping_and_autoclosure(arg : @escaping @autoclosure ()->()) {}
>>> _______________________________________________
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>>
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