Dmitry Savvinov
4434db4d69
- Make AbstractDiagnosticsTest dump function contracts - Add diagnostics tests on parsing contracts - Add diagnostics tests on smartcats in presence of functions with contracts - Add diagnostics tests on initialization and flow in presence of in-place called lambdas ========== Introduction of EffectSystem: 16/18
46 lines
1.4 KiB
Kotlin
Vendored
46 lines
1.4 KiB
Kotlin
Vendored
// !LANGUAGE: +CallsInPlaceEffect
|
|
// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER
|
|
|
|
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 innerTryCatchInitializes() {
|
|
val x: Int
|
|
|
|
try {
|
|
myRun {
|
|
try {
|
|
x = innerComputation()
|
|
x.inc()
|
|
}
|
|
catch (e: java.lang.Exception) {
|
|
// Potential reassignment because x.inc() could threw
|
|
<!VAL_REASSIGNMENT!>x<!> = 42
|
|
x.inc()
|
|
}
|
|
}
|
|
// Can get here only when inlined lambda exited properly, i.e. x is initialized
|
|
x.inc()
|
|
outerComputation()
|
|
|
|
} catch (e: java.lang.Exception) {
|
|
// Can get here if innerComputation() threw an exception that wasn't catched by the inner catch (x is not initialized)
|
|
// OR if outerComputation() threw an exception (x is initialized because we reach outer computation only when inner finished ok)
|
|
// So, x=I? here
|
|
<!UNINITIALIZED_VARIABLE!>x<!>.inc()
|
|
|
|
// Potential reasignment
|
|
x = 42
|
|
}
|
|
// Here x=I because outer try-catch either exited normally (x=I) or catched exception (x=I, with reassingment, though)
|
|
x.inc()
|
|
} |