Mikhail Glukhikh
61 lines
1.9 KiB
Kotlin
Vendored
61 lines
1.9 KiB
Kotlin
Vendored
// !LANGUAGE: +AllowContractsForCustomFunctions +UseReturnsEffect
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// !OPT_IN: kotlin.contracts.ExperimentalContracts
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// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER
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import kotlin.contracts.*
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fun isString(x: Any?): Boolean {
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contract {
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returns(true) implies (x is String)
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}
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return x is String
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}
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fun notIsString(x: Any?): Boolean {
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contract {
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returns(false) implies (x is String)
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}
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return x !is String
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}
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fun notIsInt(x: Any?): Boolean {
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contract {
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returns(false) implies (x !is Int)
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}
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return x !is Int
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}
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fun intersectingInfo(x: Any?, y: Any?) {
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if ((isString(x) && y is String) || (!notIsString(x) && !notIsInt(y))) {
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<!DEBUG_INFO_SMARTCAST!>x<!>.length
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y.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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}
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else {
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x.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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}
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}
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fun intersectingInfo2(x: Any?, y: Any?) {
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// In each arg of "||"-operator presented fact "x is String" which should lead to smartcast.
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// Also there are 3 additional facts: "x is Int", "y is String", "y is Int". One
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// of them is absent in each arg of "||"-operator, so they *shouldn't* lead to smartcast
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if ((isString(x) && !notIsInt(x) && y is String) ||
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(!notIsString(x) && isString(y) && <!USELESS_IS_CHECK!>y is Int<!>) ||
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(x is String && !notIsInt(y) && <!USELESS_IS_CHECK!>x is Int<!>)) {
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<!DEBUG_INFO_SMARTCAST!>x<!>.length
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x.<!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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y.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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}
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x.<!UNRESOLVED_REFERENCE!>length<!>
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x.<!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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y.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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}
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