Support KClass.primaryConstructor

2015-07-23 19:06:00 +03:00
parent 699a801ce9
commit 7fc499df46
3 changed files with 70 additions and 0 deletions
@@ -0,0 +1,52 @@
+import kotlin.test.assertNull
+import kotlin.test.assertNotNull
+import kotlin.reflect.*
+
+class OnlyPrimary
+
+class PrimaryWithSecondary(val s: String) {
+    constructor(x: Int) : this(x.toString())
+
+    override fun toString() = s
+}
+
+class OnlySecondary {
+    constructor(s: String)
+}
+
+class TwoSecondaries {
+    constructor(s: String)
+    constructor(d: Double)
+}
+
+enum class En
+
+interface I
+object O
+class C {
+    companion object
+}
+
+fun box(): String {
+    val p1 = OnlyPrimary::class.primaryConstructor
+    assertNotNull(p1)
+    assert(p1!!.call() is OnlyPrimary)
+
+    val p2 = PrimaryWithSecondary::class.primaryConstructor
+    assertNotNull(p2)
+    assert(p2!!.call("beer").toString() == "beer")
+
+    val p3 = OnlySecondary::class.primaryConstructor
+    assertNull(p3)
+
+    val p4 = TwoSecondaries::class.primaryConstructor
+    assertNull(p4)
+
+    assertNotNull(En::class.primaryConstructor) // TODO: maybe primaryConstructor should be null for enum classes
+
+    assertNull(I::class.primaryConstructor)
+    assertNull(O::class.primaryConstructor)
+    assertNull(C.Companion::class.primaryConstructor)
+
+    return "OK"
+}