K2: support ForbidInferringTypeVariablesIntoEmptyIntersection on/off

2023-02-28 09:40:19 +01:00
parent f7544aff62
commit b64cb67370
43 changed files with 86 additions and 248 deletions
@@ -27,7 +27,7 @@ fun test3() = run {
    incompatibleI() // ? either uninferred T or error (Unit </: I)
 }

-fun test4() = <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>run<!> {
+fun test4() = <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_WARNING!>run<!> {
    if (p) return@run
    incompatibleC() // ? either uninferred T or error (Unit </: C)
 }
@@ -47,7 +47,7 @@ fun test(i: Inv<Nothing>, iUnit: Inv<Unit>) {

    if (iUnit is String) {
        launch {
-            run(A.<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>flexible<!>(iUnit)) { 42 }
+            run(A.<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_WARNING!>flexible<!>(iUnit)) { 42 }
        }
    }
 }
@@ -1,37 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION
-
-abstract class Foo<T>
-
-abstract class Bar<T> : Foo<T>(), Comparable<Bar<T>>
-
-object Scope {
-    fun <T : Comparable<T>, S : T> greater(x: Bar<in S>, other: Foo<T>) {}
-
-    object Nested {
-        fun <T : Comparable<T>, S : T> greater(x: Bar<in S>, t: T) {}
-
-        fun test(b: Bar<Long>) {
-            <!DEBUG_INFO_CALL("fqName: Scope.greater; typeCall: function")!>greater(b, b)<!>
-        }
-    }
-}
-
-object OnlyOne {
-    fun <T : Comparable<T>, S : T> greater(x: Bar<in S>, t: T) {}
-
-    fun test(b: Bar<Long>) {
-        <!DEBUG_INFO_CALL("fqName: OnlyOne.greater; typeCall: function")!><!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>greater<!>(b, b)<!>
-    }
-}
-
-object GoodOldCandidate {
-    fun <T : Comparable<T>, S : T> greater(x: Bar<in S>, t: T) {}
-
-    object Nested {
-        fun <T : Comparable<T>, S : T> greater(x: Bar<in S>, other: Foo<T>) {}
-
-        fun test(b: Bar<Long>) {
-            <!DEBUG_INFO_CALL("fqName: GoodOldCandidate.Nested.greater; typeCall: function")!>greater(b, b)<!>
-        }
-    }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER -UNUSED_EXPRESSION

 abstract class Foo<T>
@@ -1,11 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-class Foo<T>
-
-class Bar<T> {
-    fun <S : T> takeFoo(foo: Foo<in S>) {}
-}
-
-fun main() {
-    val foo = Foo<Int>()
-    Bar<String>().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>takeFoo<!>(foo) // error in 1.3.72, no error in 1.4.31
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 class Foo<T>

@@ -1,13 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-class Foo<T>
-
-class Bar<T> {
-    fun <S : T> takeFoo(foo: Foo<in S>) {}
-}
-
-interface A
-
-fun <K : L, L : N, N> main() where N: A, N: Number {
-    val foo = Foo<K>()
-    Bar<String>().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>takeFoo<!>(foo) // error in 1.3.72, no error in 1.4.31
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 class Foo<T>

@@ -1,11 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-class Foo<T>
-
-class Bar<T> {
-    fun <S : T> takeFoo(foo: Foo<in S>) {}
-}
-
-fun <K : <!FINAL_UPPER_BOUND!>Int<!>> main() {
-    val foo = Foo<K>()
-    Bar<String>().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>takeFoo<!>(foo) // error in 1.3.72, no error in 1.4.31
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 class Foo<T>

@@ -8,5 +8,5 @@ class Bar<T> {

 fun <K : L, L : N, N: <!FINAL_UPPER_BOUND!>Int<!>> main() {
    val foo = Foo<K>()
-    val x: Float = Bar<String>().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION("S; kotlin/String, K; multiple incompatible classes; : kotlin/String, kotlin/Int")!>takeFoo<!>(foo) // error in 1.3.72, no error in 1.4.31
+    val x: Float = Bar<String>().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_ERROR("S; kotlin/String, K; multiple incompatible classes; : kotlin/String, kotlin/Int")!>takeFoo<!>(foo) // error in 1.3.72, no error in 1.4.31
 }
@@ -1,11 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-class Foo<T>
-
-class Bar<T> {
-    fun <S : T> takeFoo(foo: Foo<in S>) {}
-}
-
-fun <K : L, L : N, N: Number> main() {
-    val foo = Foo<K>()
-    Bar<String>().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>takeFoo<!>(foo) // error in 1.3.72, no error in 1.4.31
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 class Foo<T>

@@ -1,17 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-open class A<T1, T2> {}
-class B {
-    fun <T1: Number, T2: A<Float, T1>> foo(x1: T2, x2: T1) {}
-}
-class C<T: D, T2>(val x: T, val y: T2) {
-    fun test() {
-        B().<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>foo<!>(x, foo())
-    }
-}
-open class D: A<Float, Number>()
-fun <T: <!FINAL_UPPER_BOUND!>String<!>> foo(): T  {
-    return "" <!UNCHECKED_CAST!>as T<!> // this cast is safe because String is final.
-}
-fun main() {
-    C(D(), 10.5).test()
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 open class A<T1, T2> {}
 class B {
@@ -1,11 +0,0 @@
-open class Base
-open class DoesNotImplementBase
-
-fun <T, V> exampleGenericFunction(func: V) where T: Base, V: (T) -> Unit {
-
-}
-
-fun main() {
-    val func: (DoesNotImplementBase) -> Unit = { }
-    <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>exampleGenericFunction<!>(func) // expected this to be a compilation error as the T: Base constraint should not be satisfied
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 open class Base
 open class DoesNotImplementBase

@@ -1,11 +0,0 @@
-open class Base
-class DoesNotImplementBase
-
-fun <T, V> exampleGenericFunction(func: V) where T: Base, V: (T) -> Unit {
-
-}
-
-fun main() {
-    val func: (DoesNotImplementBase) -> Unit = { }
-    <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>exampleGenericFunction<!>(func) // expected this to be a compilation error as the T: Base constraint should not be satisfied
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 open class Base
 class DoesNotImplementBase

@@ -5,7 +5,7 @@ fun box(): String {
    return try {
        val range1 = 0..1
        range1 <!CAST_NEVER_SUCCEEDS!>as<!> List<Double>
-        range1.<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>joinToString<!> { "" }
+        range1.<!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_WARNING!>joinToString<!> { "" }
    } catch (e: java.lang.ClassCastException) {
        "OK"
    }
@@ -1,11 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-open class Foo
-inline fun <reified T : Foo> g(): T? = null
-
-inline fun <R> f(block: ()->R?): R? {
-    return block()
-}
-
-fun main() {
-    <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>f<!><Int> { g() }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 open class Foo
 inline fun <reified T : Foo> g(): T? = null
@@ -1,7 +0,0 @@
-fun <T : <!FINAL_UPPER_BOUND!>String<!>> g(): T? = null
-
-fun <R> f(block: () -> R?): R? = block()
-
-fun main() {
-    <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>f<!><Int> { g() /* OK, g() is inferred into {Int & String}? */ }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 fun <T : <!FINAL_UPPER_BOUND!>String<!>> g(): T? = null

 fun <R> f(block: () -> R?): R? = block()
@@ -1,20 +0,0 @@
-// RENDER_DIAGNOSTICS_FULL_TEXT
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-
-class In<in T>
-class Out<out T>
-
-class A
-class B
-
-fun <K> select(x: K, y: K): K = x
-fun <V> genericIn(x: In<V>) {}
-fun <V> genericOut(x: Out<V>) {}
-
-fun test1(a: In<A>, b: In<B>) {
-    <!INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION!>genericIn<!>(select(a, b))
-}
-
-fun test2(a: Out<A>, b: Out<B>) {
-    genericOut(select(a, b))
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // RENDER_DIAGNOSTICS_FULL_TEXT
 // !DIAGNOSTICS: -UNUSED_PARAMETER