Dmitry Savvinov
b29a6e48fb
- Introduce new language feature 'ReadDeserializedContracts', which allows to deserialize contracts from metadata. - Introduce new language feature 'AllowContractsForCustomFunctions', which allows reading contracts from sources. - Use new features instead of combination 'CallsInPlaceEffect || ReturnsEffect' - Rename 'CallsInPlaceEffect' -> 'UseCallsInPlaceEffect', 'ReturnsEffect' -> 'UseReturnsEffect'. As names suggest, they control if it is allowed to use corresponding effect in analysis. We have to introduce separate 'ReadDeserializedContracts' to enable contracts only in some modules of the project, because libraries are read with project-wide settings (see KT-20692).
61 lines
2.0 KiB
Kotlin
Vendored
61 lines
2.0 KiB
Kotlin
Vendored
// !LANGUAGE: +AllowContractsForCustomFunctions +UseReturnsEffect
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// !DIAGNOSTICS: -INVISIBLE_REFERENCE -INVISIBLE_MEMBER
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// !WITH_NEW_INFERENCE
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import kotlin.internal.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.<!NI;NONE_APPLICABLE, OI;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.<!NI;NONE_APPLICABLE, OI;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) && y is Int) ||
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(x is String && !notIsInt(y) && x is Int)) {
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<!DEBUG_INFO_SMARTCAST!>x<!>.length
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x.<!NI;NONE_APPLICABLE, OI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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y.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!NI;NONE_APPLICABLE, OI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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}
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x.<!UNRESOLVED_REFERENCE!>length<!>
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x.<!NI;NONE_APPLICABLE, OI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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y.<!UNRESOLVED_REFERENCE!>length<!>
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y.<!NI;NONE_APPLICABLE, OI;UNRESOLVED_REFERENCE_WRONG_RECEIVER!>inc<!>()
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}
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