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author | Jason Zaugg <jzaugg@gmail.com> | 2013-01-27 13:31:06 +0100 |
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committer | Adriaan Moors <adriaan.moors@typesafe.com> | 2013-02-07 15:02:46 -0800 |
commit | dfbaaa179fddd3d37abf66a08080f646b8557b6f (patch) | |
tree | ac90ee932e1d20ab83cc031feb049945be398c2b /test/files/run/t3050.scala | |
parent | 0dd02d92a363ee13b13eb4536c938d24bb5dd98d (diff) | |
download | scala-dfbaaa179fddd3d37abf66a08080f646b8557b6f.tar.gz scala-dfbaaa179fddd3d37abf66a08080f646b8557b6f.tar.bz2 scala-dfbaaa179fddd3d37abf66a08080f646b8557b6f.zip |
SI-6187 Make partial functions re-typable
- `New(tpe)` doesn't survive a `resetAttrs` / typecheck; use
a name instead.
- Abandon the tree attachment that passed the default
case from `typer` to `patmat`; this tree eluded the
attribute reset performed in the macro. Instead, add it
to the match. Apart from making the tree re-typable, it
also exposes the true code structure to macros, which
is important if they need to perform other code
transformations.
- Install original trees on the declared types of the
parameters of the `applyOrElse` method to ensure that
references to them within the method pick up the correct
type parameter skolems upon retypechecking.
- Propagate `TypeTree#original` through `copyAttrs`,
which is called during tree duplication / `TreeCopiers`.
Without this, the original trees that we installed were
not visible anymore during `ResetAttrs`.
We are not able to reify partial functions yet -- the
particular sticking point is reification of the parentage
which is only available in the `ClassInfoType`.
Diffstat (limited to 'test/files/run/t3050.scala')
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