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| author | Dmitry Petrashko <dmitry.petrashko@gmail.com> | 2014-10-24 21:00:51 +0200 |
|---|---|---|
| committer | Martin Odersky <odersky@gmail.com> | 2014-10-26 16:24:02 +0100 |
| commit | f459bf085d743c801fe724089438c0082014121f (patch) | |
| tree | b9b1fba1112c36387d3a7b862d8f611e9cca2e1d /src/dotty/tools/dotc/transform/PatternMatcher.scala | |
| parent | a5878de9409c4d511c482a296ec6a3e85e868b93 (diff) | |
| download | dotty-f459bf085d743c801fe724089438c0082014121f.tar.gz dotty-f459bf085d743c801fe724089438c0082014121f.tar.bz2 dotty-f459bf085d743c801fe724089438c0082014121f.zip | |
Fix PreserveSubPatBinders not storing subparts that are used only for type tests.
Diffstat (limited to 'src/dotty/tools/dotc/transform/PatternMatcher.scala')
| -rw-r--r-- | src/dotty/tools/dotc/transform/PatternMatcher.scala | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/src/dotty/tools/dotc/transform/PatternMatcher.scala b/src/dotty/tools/dotc/transform/PatternMatcher.scala index 4a1a66fbc..8af1b4a21 100644 --- a/src/dotty/tools/dotc/transform/PatternMatcher.scala +++ b/src/dotty/tools/dotc/transform/PatternMatcher.scala @@ -428,6 +428,7 @@ class PatternMatcher extends MiniPhaseTransform with DenotTransformer {thisTrans private lazy val (stored, substed) = (subPatBinders, subPatRefs).zipped.partition{ case (sym, _) => storedBinders(sym) } + // dd: this didn't yet trigger error. But I believe it would. if this causes double denition of symbol error this can be replaced with NoRebindings protected lazy val introducedRebindings: Rebindings = if (!emitVars) Rebindings(subPatBinders, subPatRefs) else { val (subPatBindersSubstituted, subPatRefsSubstituted) = substed.unzip @@ -948,7 +949,7 @@ class PatternMatcher extends MiniPhaseTransform with DenotTransformer {thisTrans case Bind(nme.WILDCARD, _) => true // don't skip when binding an interesting symbol! case Ident(nme.WILDCARD) => true case Alternative(ps) => ps forall unapply - case Typed(PatternBoundToUnderscore(), _) => true + case Typed(PatternBoundToUnderscore(), _) => false // true // Dmitry: change in dotty. Type test will be performed and the field must be stored case _ => false } } |