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deprecates resetAllAttrs and resetLocalAttrs in favor of the new API
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We now have c.untypecheck, which is supposed to be a counterpart of c.typecheck
in the sense that it goes back from typed trees to untyped ones:
http://stackoverflow.com/questions/20936509/scala-macros-what-is-the-difference-between-typed-aka-typechecked-an-untyped.
Let’s hope that c.untypecheck will soon be able to solve our problems
with partially/incorrectly attributed trees emitted by macros:
https://groups.google.com/forum/#!topic/scala-internals/TtCTPlj_qcQ.
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Performs the following renamings:
* scala.reflect.macros.BlackboxContext to scala.reflect.macros.blackbox.Context
* scala.reflect.macros.BlackboxMacro to scala.reflect.macros.blackbox.Macro
* scala.reflect.macros.WhiteboxContext to scala.reflect.macros.whitebox.Context
* scala.reflect.macros.WhiteboxMacro to scala.reflect.macros.whitebox.Macro
https://groups.google.com/forum/#!topic/scala-internals/MX40-dM28rk
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This is the first commit in the series. This commit only:
1) Splits Context into BlackboxContext and WhiteboxContext
2) Splits Macro into BlackboxMacro and WhiteboxMacro
3) Introduces the isBundle property in the macro impl binding
Here we just teach the compiler that macros can now be blackbox and whitebox,
without actually imposing any restrictions on blackbox macros. These
restrictions will come in subsequent commits.
For description and documentation of the blackbox/whitebox separation
see the official macro guide at the scaladoc website:
http://docs.scala-lang.org/overviews/macros/blackbox-whitebox.html
Some infrastructure work to make evolving macros easier:
compile partest-extras with quick so they can use latest library/reflect/...
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- `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`.
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