More smthg like this:
protocol PrecedGrpType{}
enum OperatorAssociativity { case left, right }
enum PrecedenceGroup {
casedefaultGroup(OperatorAssociativity)
indirect casestrongerThan(OperatorAssociativity,PrecedenceGroup)
indirect caseweakerThan(OperatorAssociativity,PrecedenceGroup)
}
let Additive: PrecedenceGroup = .defaultGroup(.left)
let Multiplicative: PrecedenceGroup = .strongerThan(.left, Additive)
let Exponentiative: PrecedenceGroup = .strongerThan(.left, Multiplicative)
standard Swift, which makes it easier to reflect when the api gets created in 40
Regards
LM
(From mobile)
>> On Jun 24, 2016, at 2:47 PM, Anton Zhilin via swift-evolution
>> <[email protected]> wrote:
>>
>> L. Mihalkovic via swift-evolution <swift-evolution@...> writes:
>>
>>>> Could you please explain what you mean by "meta-circular syntax for
>> the
>>>> precedence group definitions"? An example?
>>> =define it using existing swift constructs rather than by extending
>> swift with new kwd looks like grp
>>> matches a struct.
>>
>> I still don't fully understand without an example :(
>> If you mean something like this:
>>
>> protocol PrecedenceGroup_Additive {
>> associatedtype StrongerThan_Comparative
>> associatedtype WeakerThan_Multiplicative
>> }
>>
>> Then this is just ugly.
>>
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