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CHECKIN COMMENTS
--------------------------------------------------------------------------------
Changeset Id: 950981
Date: 6/17/2009 2:10:25 PM
(dinov) Implements support for generic method type inference. Mostly a DLR
outer layer change with some tweaks to IronPython and IronRuby.
Python changes:
We no longer need to eagerly detect when we’re calling a method
w/ only generics. We also add support for inferring types for Lambda arguments
based upon a Python Function’s arity. Finally there’s one fix where we make
sure to create the correct kind DMO instead of just the base DynamicMetaObject
type. A few tests are also updated as there are some minor changes in results
when overloaded by both a generic method and a non-generic method. Finally
lots of new tests are added.
Ruby changes:
Ruby’s MethodGroupInfo was doing MakeGenericMethod and then
returning the generic method. But the types it’s passing in are all generic
parameters – so the end result is Ruby produces a method for which
.IsGenericMethodDefinition is false but it contains all of the original generic
method parameters. Now we return the original target so
IsGenericMethodDefinition remains true. Also updated MissingBlockArgBuilder so
we can know that it doesn’t really prodive any parameters. Finally the small
set of tests verifying exceptions are throw are updated to expect successful
inference.
DLR changes:
This is the bulk of the changes. Added a new TypeInferer class
which performs the actual type inference. Added a new CallFailureReason for
noting when we failed to perform type inference. Updated the ArgBuilder’s so
we can clone them w/ a new ParameterInfo. This is used for replacing the
existing ArgBuilder’s built for the generic method w/ new ArgBuilders which
have been specialized to the specific generic type. Fixed a couple of spots
where we were creating base DynamicMetaObject’s instead of getting them from
their values. Added support for MethodCandidate’s to track additional
restrictions with themselves – this is necessary because the type inference can
result in new type checks when inferring based ...
(Shelveset: GenericMethodTypeInferenceFinal2;REDMOND\dinov | SNAP CheckinId:
8720)
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