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Diffstat (limited to 'test/files/jvm/t8786-sig.scala')
| -rw-r--r-- | test/files/jvm/t8786-sig.scala | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/test/files/jvm/t8786-sig.scala b/test/files/jvm/t8786-sig.scala new file mode 100644 index 0000000000..0745b650e6 --- /dev/null +++ b/test/files/jvm/t8786-sig.scala @@ -0,0 +1,116 @@ +class A[U] { + @annotation.varargs def m1[T] (a: T*): T = a.head + @annotation.varargs def m2[T <: AnyRef](a: T*): T = a.head + @annotation.varargs def m3[T <: AnyVal](a: T*): T = a.head + @annotation.varargs def m4[T <: Int] (a: T*): T = a.head + @annotation.varargs def m5[T <: String](a: T*): T = a.head + @annotation.varargs def m6 (a: String*): String = a.head + @annotation.varargs def m7 (a: Int*): Int = a.head + @annotation.varargs def m8 (a: U*): U = a.head + + def n1[T] (a: Array[T]): T = a(0) + def n2[T <: AnyRef](a: Array[T]): T = a(0) + def n3[T <: AnyVal](a: Array[T]): T = a(0) + def n4[T <: Int] (a: Array[T]): T = a(0) + def n5[T <: String](a: Array[T]): T = a(0) + def n6 (a: Array[String]): String = a(0) + def n7 (a: Array[Int]): Int = a(0) + def n8 (a: Array[U]): U = a(0) +} + +object Test extends App { + val a = classOf[A[_]] + + def sig (method: String, tp: Class[_]) = a.getDeclaredMethod(method, tp).toString + def genSig(method: String, tp: Class[_]) = a.getDeclaredMethod(method, tp).toGenericString + def bound (method: String, tp: Class[_]) = { + val m = a.getDeclaredMethod(method, tp) + m.getGenericParameterTypes.apply(0) match { + case _: Class[_] => "" + case gat: java.lang.reflect.GenericArrayType => + val compTp = gat.getGenericComponentType.asInstanceOf[java.lang.reflect.TypeVariable[_]] + compTp.getBounds.apply(0).toString + } + } + + def check(a: String, b: String) = { + assert(a == b, s"found: $a\nexpected: $b") + } + + val sq = classOf[Seq[_]] + val ob = classOf[Object] + val ao = classOf[Array[Object]] + val as = classOf[Array[String]] + val ai = classOf[Array[Int]] + + check(sig("m1", sq) , "public java.lang.Object A.m1(scala.collection.Seq)") + check(sig("m2", sq) , "public java.lang.Object A.m2(scala.collection.Seq)") + check(sig("m3", sq) , "public java.lang.Object A.m3(scala.collection.Seq)") + check(sig("m4", sq) , "public int A.m4(scala.collection.Seq)") + check(sig("m5", sq) , "public java.lang.String A.m5(scala.collection.Seq)") + check(sig("m6", sq) , "public java.lang.String A.m6(scala.collection.Seq)") + check(sig("m7", sq) , "public int A.m7(scala.collection.Seq)") + check(sig("m8", sq) , "public java.lang.Object A.m8(scala.collection.Seq)") + + check(genSig("m1", sq), "public <T> T A.m1(scala.collection.Seq<T>)") + check(genSig("m2", sq), "public <T> T A.m2(scala.collection.Seq<T>)") + check(genSig("m3", sq), "public <T> T A.m3(scala.collection.Seq<T>)") + // TODO: the signature for is wrong for T <: Int, SI-9846. The signature should be + // `public int A.m4(scala.collection.Seq<java.lang.Object>)`. This is testing the status quo. + check(genSig("m4", sq), "public <T> T A.m4(scala.collection.Seq<T>)") + check(genSig("m5", sq), "public <T> T A.m5(scala.collection.Seq<T>)") + check(genSig("m6", sq), "public java.lang.String A.m6(scala.collection.Seq<java.lang.String>)") + check(genSig("m7", sq), "public int A.m7(scala.collection.Seq<java.lang.Object>)") + check(genSig("m8", sq), "public U A.m8(scala.collection.Seq<U>)") + + + // varargs forwarder + + check(sig("m1", ao) , "public java.lang.Object A.m1(java.lang.Object[])") + check(sig("m2", ao) , "public java.lang.Object A.m2(java.lang.Object[])") + check(sig("m3", ao) , "public java.lang.Object A.m3(java.lang.Object[])") + check(sig("m4", ao) , "public int A.m4(java.lang.Object[])") + check(sig("m5", as) , "public java.lang.String A.m5(java.lang.String[])") + check(sig("m6", as) , "public java.lang.String A.m6(java.lang.String[])") + check(sig("m7", ai) , "public int A.m7(int[])") + check(sig("m8", ao) , "public java.lang.Object A.m8(java.lang.Object[])") + + check(genSig("m1", ao), "public <T> T A.m1(T...)") + check(genSig("m2", ao), "public <T> T A.m2(T...)") + check(genSig("m3", ao), "public <T> T A.m3(T...)") + // testing status quo: signature is wrong for T <: Int, SI-9846 + check(genSig("m4", ao), "public <T> T A.m4(T...)") + check(genSig("m5", as), "public <T> T A.m5(T...)") + check(genSig("m6", as), "public java.lang.String A.m6(java.lang.String...)") + check(genSig("m7", ai), "public int A.m7(int...)") + check(genSig("m8", ao), "public U A.m8(U...)") + + check(bound("m1", ao) , "class java.lang.Object") + check(bound("m2", ao) , "class java.lang.Object") + check(bound("m3", ao) , "class java.lang.Object") + check(bound("m4", ao) , "class java.lang.Object") + check(bound("m5", as) , "class java.lang.String") + check(bound("m6", as) , "") + check(bound("m7", ai) , "") + check(bound("m8", ao) , "class java.lang.Object") + + + check(sig("n1", ob) , "public java.lang.Object A.n1(java.lang.Object)") + check(sig("n2", ao) , "public java.lang.Object A.n2(java.lang.Object[])") + check(sig("n3", ob) , "public java.lang.Object A.n3(java.lang.Object)") + check(sig("n4", ob) , "public int A.n4(java.lang.Object)") + check(sig("n5", as) , "public java.lang.String A.n5(java.lang.String[])") + check(sig("n6", as) , "public java.lang.String A.n6(java.lang.String[])") + check(sig("n7", ai) , "public int A.n7(int[])") + check(sig("n8", ob) , "public java.lang.Object A.n8(java.lang.Object)") + + check(genSig("n1", ob), "public <T> T A.n1(java.lang.Object)") + check(genSig("n2", ao), "public <T> T A.n2(T[])") + check(genSig("n3", ob), "public <T> T A.n3(java.lang.Object)") + // testing status quo: signature is wrong for T <: Int, SI-9846 + check(genSig("n4", ob), "public <T> T A.n4(java.lang.Object)") + check(genSig("n5", as), "public <T> T A.n5(T[])") + check(genSig("n6", as), "public java.lang.String A.n6(java.lang.String[])") + check(genSig("n7", ai), "public int A.n7(int[])") + check(genSig("n8", ob), "public U A.n8(java.lang.Object)") +} |