Files
kotlin-fork/compiler/testData/diagnostics/tests/generics/Projections.kt
T
2021-05-25 13:28:27 +03:00

54 lines
1.9 KiB
Kotlin
Vendored

// !CHECK_TYPE
class In<in T>() {
fun f(t : T) : Unit {}
fun f(t : Int) : Int = 1
fun f1(t : T) : Unit {}
}
class Out<out T>() {
fun f() : T {throw IllegalStateException()}
fun f(a : Int) : Int = a
}
class Inv<T>() {
fun f(t : T) : T = t
fun inf(t : T) : Unit {}
fun outf() : T {throw IllegalStateException()}
}
fun testInOut() {
In<String>().f("1");
(null <!CAST_NEVER_SUCCEEDS!>as<!> In<<!REDUNDANT_PROJECTION!>in<!> String>).f("1")
(null <!CAST_NEVER_SUCCEEDS!>as<!> In<*>).<!NONE_APPLICABLE!>f<!>("1") // Wrong Arg
In<String>().f(1);
(null <!CAST_NEVER_SUCCEEDS!>as<!> In<<!REDUNDANT_PROJECTION!>in<!> String>).f(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> In<*>).f(1);
Out<Int>().f(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> Out<<!REDUNDANT_PROJECTION!>out<!> Int>).f(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> Out<*>).f(1)
Out<Int>().f()
(null <!CAST_NEVER_SUCCEEDS!>as<!> Out<<!REDUNDANT_PROJECTION!>out<!> Int>).f()
(null <!CAST_NEVER_SUCCEEDS!>as<!> Out<*>).f()
Inv<Int>().f(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<in Int>).f(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<out Int>).f(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>) // !!
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<*>).f(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>) // !!
Inv<Int>().inf(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<in Int>).inf(1)
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<out Int>).inf(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>) // !!
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<*>).inf(<!CONSTANT_EXPECTED_TYPE_MISMATCH!>1<!>) // !!
Inv<Int>().outf()
checkSubtype<Int>(<!TYPE_MISMATCH!>(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<in Int>).outf()<!>) // Type mismatch
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<out Int>).outf()
(null <!CAST_NEVER_SUCCEEDS!>as<!> Inv<*>).outf()
Inv<Int>().outf(<!TOO_MANY_ARGUMENTS!>1<!>) // Wrong Arg
}