added variance handling to constraint system

2012-08-03 17:23:00 +04:00
parent 04b2477784
commit 492d4da56d
5 changed files with 189 additions and 22 deletions
@@ -0,0 +1,68 @@
+package a
+
+class MyList<T>(t: T) {}
+
+fun <T> getMyList(t: T)           : MyList<    T> = MyList(t)
+fun <T> getMyListToWriteTo(t: T)  : MyList< in T> = MyList(t)
+fun <T> getMyListToReadFrom(t: T) : MyList<out T> = MyList(t)
+
+fun <T> useMyList     (<!UNUSED_PARAMETER!>l<!>: MyList<    T>, <!UNUSED_PARAMETER!>t<!>: T) {}
+fun <T> writeToMyList (<!UNUSED_PARAMETER!>l<!>: MyList< in T>, <!UNUSED_PARAMETER!>t<!>: T) {}
+fun <T> readFromMyList(<!UNUSED_PARAMETER!>l<!>: MyList<out T>, <!UNUSED_PARAMETER!>t<!>: T) {}
+
+fun test1(int: Int, any: Any) {
+    val a0 : MyList<Any> = getMyList(int)
+
+    val a1 : MyList<Int> = <!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>getMyList<!>(any)
+
+    val a2 : MyList<out Any> = getMyList(int)
+
+    val a3 : MyList<out Any> = getMyListToReadFrom(int)
+
+    val a4 : MyList<in Int> = getMyList(any)
+
+    val a5 : MyList<in Int> = getMyListToWriteTo(any)
+
+
+    val a6 : MyList<in Any> = <!TYPE_MISMATCH!>getMyList<Int>(int)<!>
+    val a7 : MyList<in Any> = getMyList(int)
+
+    val a8 : MyList<in Any> = <!TYPE_MISMATCH!>getMyListToReadFrom<Int>(int)<!>
+    val a9 : MyList<in Any> = <!TYPE_MISMATCH!>getMyListToReadFrom(int)<!>
+
+    val a10 : MyList<out Int> = <!TYPE_MISMATCH!>getMyList<Any>(any)<!>
+    val a11 : MyList<out Int> = <!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>getMyList<!>(any)
+
+    val a12 : MyList<out Int> = <!TYPE_MISMATCH!>getMyListToWriteTo<Any>(any)<!>
+    val a13 : MyList<out Int> = <!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>getMyListToWriteTo<!>(any)
+
+    useMyList(getMyList(int), int)
+    useMyList(getMyList(any), int)
+    <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>useMyList<!>(getMyList(int), any)
+
+    readFromMyList(getMyList(int), any)
+    readFromMyList(getMyList(any), int)
+    readFromMyList<Int>(<!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>getMyList<!>(any), int)
+
+    readFromMyList<Int>(<!TYPE_INFERENCE_EXPECTED_TYPE_MISMATCH!>getMyListToReadFrom<!>(any), int)
+    readFromMyList(getMyListToReadFrom(any), int)
+
+    readFromMyList(getMyListToReadFrom(int), any)
+
+
+    writeToMyList(getMyList(any), int)
+    writeToMyList<Any>(getMyList(int), any)
+    writeToMyList(getMyList<Any>(int), any)
+    <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>writeToMyList<!>(getMyList(int), any)
+
+    writeToMyList(getMyListToWriteTo(any), int)
+    <!TYPE_INFERENCE_CONFLICTING_SUBSTITUTIONS!>writeToMyList<!>(getMyListToWriteTo(int), any)
+
+    readFromMyList(<!TYPE_MISMATCH!>getMyListToWriteTo(any)<!>, any)
+
+    writeToMyList(<!TYPE_MISMATCH!>getMyListToReadFrom(any)<!>, any)
+
+    use(a0, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10, a11, a12, a13)
+}
+
+fun use(vararg a: Any) = a