diff options
Diffstat (limited to 'test/files/run')
-rw-r--r-- | test/files/run/sammy_restrictions_LMF.scala | 42 | ||||
-rw-r--r-- | test/files/run/sammy_specialization_restriction.scala | 34 |
2 files changed, 42 insertions, 34 deletions
diff --git a/test/files/run/sammy_restrictions_LMF.scala b/test/files/run/sammy_restrictions_LMF.scala new file mode 100644 index 0000000000..40bb234a72 --- /dev/null +++ b/test/files/run/sammy_restrictions_LMF.scala @@ -0,0 +1,42 @@ +trait T[@specialized A] { def apply(a: A): A } +trait TInt extends T[Int] + +trait TWithVal { val x: Any = 1; def apply(x: Int): String } + +object Test extends App { + final val AnonFunClass = "$anonfun$" + final val LMFClass = "$$Lambda$" // LambdaMetaFactory names classes like this + + private def LMF(f: Any): Unit = { + val className = f.getClass.toString + assert(!(className contains AnonFunClass), className) + assert((className contains LMFClass), className) + } + + private def notLMF(f: Any): Unit = { + val className = f.getClass.toString + assert((className contains AnonFunClass), className) + assert(!(className contains LMFClass), className) + } + + // Check that we expand the SAM of a type that is specialized. + // This is an implementation restriction -- the current specialization scheme is not + // amenable to using LambdaMetaFactory to spin up subclasses. + // Since the generic method is abstract, and the specialized ones are concrete, + // specialization is rendered moot because we cannot implement the specialized method + // with the lambda using LMF. + + // not LMF if specialized at this type + notLMF((x => x): T[Int]) + // not LMF if specialized at this type (via subclass) + notLMF((x => x): TInt) + // LMF ok if not specialized at this type + LMF((x => x): T[String]) + + // traits with a val member also cannot be instantiated by LMF + val fVal: TWithVal = (x => "a") + notLMF(fVal) + assert(fVal.x == 1) + + +} diff --git a/test/files/run/sammy_specialization_restriction.scala b/test/files/run/sammy_specialization_restriction.scala deleted file mode 100644 index 4487bb3ad7..0000000000 --- a/test/files/run/sammy_specialization_restriction.scala +++ /dev/null @@ -1,34 +0,0 @@ -trait T[@specialized A] { def apply(a: A): A } -trait TInt extends T[Int] - -// Check that we expand the SAM of a type that is specialized. -// This is an implementation restriction -- the current specialization scheme is not -// amenable to using LambdaMetaFactory to spin up subclasses. -// Since the generic method is abstract, and the specialized ones are concrete, -// specialization is rendered moot because we cannot implement the specialized method -// with the lambda using LMF. -object Test extends App { - final val AnonFunClass = "$anonfun$" - final val LMFClass = "$$Lambda$" // LambdaMetaFactory names classes like this - - def specializedSamPrecludesLMF() = { - val className = ((x => x): T[Int]).getClass.toString - assert((className contains AnonFunClass), className) - assert(!(className contains LMFClass), className) - } - - def specializedSamSubclassPrecludesLMF() = { - val className = ((x => x): TInt).getClass.toString - assert((className contains AnonFunClass), className) - assert(!(className contains LMFClass), className) - } - - def nonSpecializedSamUsesLMF() = { - val className = ((x => x): T[String]).getClass.toString - assert(!(className contains AnonFunClass), className) - assert(className contains LMFClass, className) - } - - specializedSamPrecludesLMF() - nonSpecializedSamUsesLMF() -} |