Files
kotlin-fork/compiler/testData/cfgVariablesWithStdLib/contracts/nestedTryCatchFinally.kt
T
Dmitry Savvinov f487525a1d Effects: add cfg-tests on inlined lambdas
==========
Introduction of Effect System: 15/18
2017-10-12 11:55:26 +03:00

66 lines
1.4 KiB
Kotlin
Vendored

// LANGUAGE_VERSION: 1.3
import kotlin.internal.contracts.*
inline fun <T> myRun(block: () -> T): T {
contract {
callsInPlace(block, InvocationKind.EXACTLY_ONCE)
}
return block()
}
fun innerComputation(): Int = 42
fun outerComputation(): Int = 52
fun log() = Unit
fun outerFinallyInitializes() {
val x: Int
try {
myRun {
try {
x = innerComputation()
} catch (e: java.lang.Exception) {
log()
}
// possible reassignment if innerComputation finished
x = 42
}
// Definite reassignment here, cause can get here only if myRun finished
x = outerComputation()
} catch (e: java.lang.Exception) {
// can catch exception thrown by the inner, so x can be not initalized
log()
} finally {
// Possible reassignment (e.g. if everything finished)
x = 42
}
// Properly initialized
x.inc()
}
fun innerFinalltInitializes() {
val x: Int
try {
myRun {
try {
innerComputation()
} catch (e: java.lang.Exception) {
log()
} finally {
x = 42
}
}
// Properly initialized
x.inc()
} catch (e: java.lang.Exception) {
log()
}
// Still can be non-initialized (e.g. if x.inc() threw an exception)
x.inc()
}