Support property getters/setters in reflection

compiler/testData/codegen/boxWithStdlib/reflection/properties/accessors/accessorNames.kt

@@ -0,0 +1,30 @@
+import kotlin.reflect.*
+import kotlin.test.assertEquals
+
+var foo = ""
+var String.bar: String
+    get() = this
+    set(value) {}
+
+class A(var baz: Int) {
+    var String.quux: String
+        get() = this
+        set(value) {}
+}
+
+fun box(): String {
+    assertEquals("<get-foo>", ::foo.getter.name)
+    assertEquals("<set-foo>", ::foo.setter.name)
+
+    assertEquals("<get-bar>", String::bar.getter.name)
+    assertEquals("<set-bar>", String::bar.setter.name)
+
+    assertEquals("<get-baz>", A::baz.getter.name)
+    assertEquals("<set-baz>", A::baz.setter.name)
+
+    val me = A::class.extensionProperties.single() as KMutableProperty2<A, String, String>
+    assertEquals("<get-quux>", me.getter.name)
+    assertEquals("<set-quux>", me.setter.name)
+
+    return "OK"
+}

compiler/testData/codegen/boxWithStdlib/reflection/properties/accessors/extensionPropertyAccessors.kt

@@ -0,0 +1,18 @@
+import kotlin.test.assertEquals
+
+var state: String = ""
+
+var String.prop: String
+    get() = length().toString()
+    set(value) { state = this + value }
+
+fun box(): String {
+    val prop = String::prop
+
+    assertEquals("3", prop.getter.invoke("abc"))
+    assertEquals("5", prop.getter("defgh"))
+
+    prop.setter("O", "K")
+
+    return state
+}

compiler/testData/codegen/boxWithStdlib/reflection/properties/accessors/memberExtensions.kt

@@ -0,0 +1,20 @@
+import kotlin.reflect.KMutableProperty2
+import kotlin.test.assertEquals
+
+class C(var state: String) {
+    var String.prop: String
+        get() = length().toString()
+        set(value) { state = this + value }
+}
+
+fun box(): String {
+    val prop = C::class.extensionProperties.single() as KMutableProperty2<C, String, String>
+
+    val c = C("")
+    assertEquals("3", prop.getter.invoke(c, "abc"))
+    assertEquals("1", prop.getter(c, "d"))
+
+    prop.setter(c, "O", "K")
+
+    return c.state
+}

compiler/testData/codegen/boxWithStdlib/reflection/properties/accessors/memberPropertyAccessors.kt

@@ -0,0 +1,15 @@
+import kotlin.test.assertEquals
+
+class C(var state: String)
+
+fun box(): String {
+    val prop = C::state
+
+    val c = C("1")
+    assertEquals("1", prop.getter.invoke(c))
+    assertEquals("1", prop.getter(c))
+
+    prop.setter(c, "OK")
+
+    return prop.get(c)
+}

compiler/testData/codegen/boxWithStdlib/reflection/properties/accessors/topLevelPropertyAccessors.kt

@@ -0,0 +1,14 @@
+import kotlin.test.assertEquals
+
+var state: String = ""
+
+fun box(): String {
+    val prop = ::state
+
+    assertEquals("", prop.getter.invoke())
+    assertEquals("", prop.getter())
+
+    prop.setter("OK")
+
+    return prop.get()
+}