Dmitriy Novozhilov
32 lines
699 B
Kotlin
Vendored
32 lines
699 B
Kotlin
Vendored
// !LANGUAGE: +AllowContractsForCustomFunctions +UseReturnsEffect
|
|
// !USE_EXPERIMENTAL: kotlin.contracts.ExperimentalContracts
|
|
// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER
|
|
|
|
import kotlin.contracts.*
|
|
|
|
// ===== Definitions ====
|
|
fun isString(x: Any?): Boolean {
|
|
contract {
|
|
returns(true) implies (x is String)
|
|
}
|
|
return x is String
|
|
}
|
|
|
|
|
|
// ==== Actual tests =======
|
|
|
|
fun implicitAlwaysFalse(x: Any?) {
|
|
if (isString(x) && !isString(x)) {
|
|
x.length
|
|
}
|
|
else {
|
|
x.<!UNRESOLVED_REFERENCE!>length<!>
|
|
}
|
|
}
|
|
|
|
fun implicitAlwaysFalseSpilling(x: Any?) {
|
|
if (isString(x) && !isString(x)) {
|
|
x.length
|
|
}
|
|
x.<!UNRESOLVED_REFERENCE!>length<!>
|
|
} |