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It’s almost 1am, so I’m only scratching the surface, mechanistically
applying the renames that I’ve written down in my notebook:
* typeSignature => info
* declarations => decls
* nme/tpnme => termNames/typeNames
* paramss => paramLists
* allOverriddenSymbols => overrides
Some explanation is in order so that I don’t get crucified :)
1) No information loss happens when abbreviating `typeSignature` and `declarations`.
We already have contractions in a number of our public APIs (e.g. `typeParams`),
and I think it’s fine to shorten words as long as people can understand
the shortened versions without a background in scalac.
2) I agree with Simon that `nme` and `tpnme` are cryptic. I think it would
be thoughtful of us to provide newcomers with better names. To offset
the increase in mouthfulness, I’ve moved `MethodSymbol.isConstructor`
to `Symbol.isConstructor`, which covers the most popular use case for nme’s.
3) I also agree that putting `paramss` is a lot to ask of our users.
The double-“s” convention is very neat, but let’s admit that it’s just
weird for the newcomers. I think `paramLists` is a good compromise here.
4) `allOverriddenSymbols` is my personal complaint. I think it’s a mouthful
and a shorter name would be a much better fit for the public API.
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Previously `checkMemberOf` was blocking base fields and methods
that are overriden in receiver.getClass. Now this is fixed.
The fix also uncovered an issue with field mirrors. Currently
their `get` and `set` methods don't respect overriding and always
return field values from a base class.
After discussing this on a reflection meeting, we decided that this
behavior is desirable and that for overriding people should use
reflectMethod and then apply on getters/setters. See the discussion at:
https://github.com/scala/scala/pull/1054.
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In 911bbc4 I've completely overlooked the fact that
reflectConstructor exists and that is also needs sanity checks.
Now reflectConstructor checks that the incoming symbol is actually a ctor,
and that it is actually a ctor of the class reflected by the current mirror.
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This renaming arguably makes the intent of `asType` more clear,
but more importantly it shaves 6 symbols off pervasive casts that
are required to anything meaningful with reflection API
(as in mirror.reflectMethod(tpe.member(newTermName("x")).asMethodSymbol)).
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Factors out error raising code and introduces a special exception class
for Scala reflection errors.
Also adds membership sanity checks to reflectXXX. Previously
reflectField, reflectMethod, reflectClass and reflectModule
in InstanceMirror didn't check that the symbols being passed to them
actually correspond to some member of the related class.
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