Allow MiniPhase to be DenotTransformer & LazyVals #80
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This makes naming uniform between trees and types, and also avoids the clash with transform.TreeTransformer. The idea is that transformers are parts of phases, and have logic that is phase-specific. In particular, a context is passed around when transforming a tree. Maps are simpler, they only have a T -> T apply method.
To bring in line with TreeTransformer terminology.
Many small and large changes. Added samplePhase to demonstrate functionality.
To test functioning, run the compiler with args
tests/pos/uncurry.scala -Ylog:sample,terminal
CreateCompanionObjectTests were re-enabled. They failed in a previous version but succeed again in the latest commit. Also uncurry.scala got renamed to curried.scala.
Creates accessors for lazy vals: 1) lazy local vals are rewritten to dotty.runtime.Lazy*** holders 2) for a non-volatile field lazy val create a non-thread-safe accessor and flag: 2.a) if lazy val type indicates that val is not nullable, uses null value as a flag 2.b) else uses boolean flag for sake of performance, method size, and allowing more jvm optimizations 3) for a volatile field lazy val use double locking scheme, that guaranties no spurious deadlocks, using long bits as bitmaps and creating companion objects to store offsets needed for unsafe methods.
All MiniPhases now start as full-fledged phases, and are given their own periods and can register DenotTransformers. Consecutive MiniPhases will be squashed automatically, to force separation into multiple phases Separator should be used Conflicts: test/test/transform/CreateCompanionObjectsTest.scala
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I'll fix merging and resubmit |
WojciechMazur
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Mar 19, 2025
Backport "Do not warn about expected missing positions in quotes.reflect.Symbol" to 3.3 LTS
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Finally :-)
@odersky, @sjrd please review