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Restore source compatibility with Scala 2.8

This commit is contained in:
Martin Duhem 2015-11-09 16:30:11 +01:00
parent bfc27f1179
commit f5e7fdd62a
1 changed files with 18 additions and 8 deletions
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26
compile/interface/src/main/scala/xsbt/ExtractAPI.scala
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@ -183,16 +183,26 @@ class ExtractAPI[GlobalType <: CallbackGlobal](val global: GlobalType,
{
import MirrorHelper._
// Here we must be careful to also consider the type parameters, because a tuple (Foo, Int)
// may become (Int, Int) for instance.
def hasValueClassAsParameter(meth: MethodSymbol): Boolean =
meth.paramss.flatten map (_.info) exists (t => isAnyValSubtype(t.typeSymbol))
val hasValueClassAsParameter: Boolean = {
import MirrorHelper._
s.asMethod.paramss.flatten map (_.info) exists (t => isAnyValSubtype(t.typeSymbol))
}
// Here too we must care for the type parameters (see above comment).
def hasValueClassAsReturnType(meth: MethodSymbol): Boolean =
isAnyValSubtype(meth.returnType.typeSymbol)
// Note: We only inspect the "outermost type" (i.e. no recursion) because we don't need to
// inspect after erasure a function that would, for instance, return a function that returns
// a subtype of AnyVal.
val hasValueClassAsReturnType: Boolean = {
val tpe = viewer(in).memberInfo(s)
tpe match {
case PolyType(_, base) => isAnyValSubtype(base.typeSymbol)
case MethodType(_, resultType) => isAnyValSubtype(resultType.typeSymbol)
case Nullary(resultType) => isAnyValSubtype(resultType.typeSymbol)
case resultType => isAnyValSubtype(resultType.typeSymbol)
}
}
val inspectPostErasure = hasValueClassAsParameter || hasValueClassAsReturnType
val inspectPostErasure = hasValueClassAsParameter(s.asMethod) || hasValueClassAsReturnType(s.asMethod)
def build(t: Type, typeParams: Array[xsbti.api.TypeParameter], valueParameters: List[xsbti.api.ParameterList]): List[xsbti.api.Def] =
{
def parameterList(syms: List[Symbol]): xsbti.api.ParameterList =