Ilya Chernikov
31 lines
801 B
Kotlin
Vendored
31 lines
801 B
Kotlin
Vendored
// !OPT_IN: kotlin.contracts.ExperimentalContracts
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import kotlin.contracts.*
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inline fun <T> exactlyOnce(block: () -> T): T {
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contract { callsInPlace(block, InvocationKind.EXACTLY_ONCE) }
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return block()
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}
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inline fun <T> atLeastOnce(block: () -> T): T {
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contract { callsInPlace(block, InvocationKind.AT_LEAST_ONCE) }
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return block()
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}
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inline fun <T> atMostOnce(block: () -> T): T {
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contract { callsInPlace(block, InvocationKind.AT_MOST_ONCE) }
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return block()
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}
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val a: String
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exactlyOnce { <!CAPTURED_MEMBER_VAL_INITIALIZATION!>a<!> = "" }
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a.length
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val b: String
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atLeastOnce { <!VAL_REASSIGNMENT!>b<!> = "" }
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b.length
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<!MUST_BE_INITIALIZED_OR_BE_ABSTRACT!>val c: String<!>
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atMostOnce { <!CAPTURED_MEMBER_VAL_INITIALIZATION!>c<!> = "" }
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<!UNINITIALIZED_VARIABLE!>c<!>.length
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