diff options
Diffstat (limited to 'src')
-rw-r--r-- | src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala | 18 | ||||
-rw-r--r-- | src/compiler/scala/tools/nsc/typechecker/PatternTypers.scala | 2 |
2 files changed, 16 insertions, 4 deletions
diff --git a/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala b/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala index 451b72d498..a2afb76b0e 100644 --- a/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala +++ b/src/compiler/scala/tools/nsc/transform/patmat/MatchTranslation.scala @@ -504,14 +504,26 @@ trait MatchTranslation { */ def treeMaker(binder: Symbol, binderKnownNonNull: Boolean, pos: Position): TreeMaker = { val paramAccessors = binder.constrParamAccessors + val numParams = paramAccessors.length + def paramAccessorAt(subPatIndex: Int) = paramAccessors(math.min(subPatIndex, numParams - 1)) // binders corresponding to mutable fields should be stored (SI-5158, SI-6070) // make an exception for classes under the scala package as they should be well-behaved, // to optimize matching on List + val hasRepeated = paramAccessors.lastOption match { + case Some(x) => definitions.isRepeated(x) + case _ => false + } val mutableBinders = ( if (!binder.info.typeSymbol.hasTransOwner(ScalaPackageClass) && - (paramAccessors exists (_.isMutable))) - subPatBinders.zipWithIndex.collect{ case (binder, idx) if paramAccessors(idx).isMutable => binder } - else Nil + (paramAccessors exists (x => x.isMutable || definitions.isRepeated(x)))) { + + subPatBinders.zipWithIndex.flatMap { + case (binder, idx) => + val param = paramAccessorAt(idx) + if (param.isMutable || (definitions.isRepeated(param) && !aligner.isStar)) binder :: Nil + else Nil + } + } else Nil ) // checks binder ne null before chaining to the next extractor diff --git a/src/compiler/scala/tools/nsc/typechecker/PatternTypers.scala b/src/compiler/scala/tools/nsc/typechecker/PatternTypers.scala index a702b3cdf5..f90e61ff92 100644 --- a/src/compiler/scala/tools/nsc/typechecker/PatternTypers.scala +++ b/src/compiler/scala/tools/nsc/typechecker/PatternTypers.scala @@ -79,7 +79,7 @@ trait PatternTypers { // do not update the symbol if the tree's symbol's type does not define an unapply member // (e.g. since it's some method that returns an object with an unapply member) val fun = inPlaceAdHocOverloadingResolution(fun0)(hasUnapplyMember) - val caseClass = fun.tpe.typeSymbol.linkedClassOfClass + val caseClass = companionSymbolOf(fun.tpe.typeSymbol.sourceModule, context) val member = unapplyMember(fun.tpe) def resultType = (fun.tpe memberType member).finalResultType def isEmptyType = resultOfMatchingMethod(resultType, nme.isEmpty)() |