[#BOO-845] Cannot emit generator methods whose yield type is a generic parameter

Boo

Cannot emit generator methods whose yield type is a generic parameter

Created: 21/Jul/07 09:01 AM Updated: 03/Aug/07 04:54 PM

Component/s:

Compiler

Affects Version/s:

None

Fix Version/s:

None

Time Tracking:

Not Specified

Issue Links:

Related

This issue relates to:

BOO-832 Defining new generic methods

dependent

This issue depends upon:

BOO-763 Defining new generic types

This issue is depended upon by:

BOO-854 Anonymous callable types fail when signature contains generic parameters

Testcase included:

yes

Description

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The Boo compiler needs to treat generator methods that return a generic parameter or an open constructed type differently, and generate a generic generator return type rather than a concrete one.

Example of generic generator method yielding a generic parameter (this won't compile):

import System.Collections.Generic 

def YieldStuff of T (items as IEnumerable of T):  
  for item in items: yield item

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Avishay Lavie - 21/Jul/07 09:02 AM

Can't create a generic generator type until creation of generic types is supported.