Roman Golyshev
166c771e1b
If we want to analyse some function's call, we need to know about its contracts, otherwise resolving the following code would be broken. Computing return type of function is a prerequisite to using it in any sensible way, so it's the best place to resolve it to CONTRACTS KT-50733
21 lines
422 B
Kotlin
Vendored
21 lines
422 B
Kotlin
Vendored
// !LANGUAGE: +AllowContractsForCustomFunctions +UseReturnsEffect
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// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER
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// !OPT_IN: kotlin.contracts.ExperimentalContracts
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import kotlin.contracts.*
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fun test(x: Any?) {
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if (isString(x)) {
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<!DEBUG_INFO_SMARTCAST!>x<!>.length
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}
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}
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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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