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Support smart casts to Type after x as? Type null check #KT-4565 Fixed

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This commit is contained in:
Mikhail Glukhikh
2017-08-10 15:47:59 +03:00
parent 5bd04a6d22
commit 80b6aaa802
14 changed files with 318 additions and 22 deletions
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compiler/testData/diagnostics/tests/smartCasts/castchecks/basicOn.kt
Vendored
+36
View File
@@ -0,0 +1,36 @@
// !LANGUAGE: +SafeCastCheckBoundSmartCasts
interface SomeClass {
val data: Any?
}
interface SomeSubClass : SomeClass {
val foo: Any?
}
fun g(a: SomeClass?) {
if (a as? SomeSubClass != null) {
// 'a' can be cast to SomeSubClass
<!DEBUG_INFO_SMARTCAST!>a<!>.hashCode()
<!DEBUG_INFO_SMARTCAST!>a<!>.foo
(a as? SomeSubClass)<!UNSAFE_CALL!>.<!>foo
(a <!USELESS_CAST!>as SomeSubClass<!>).foo
}
val b = (a as? SomeSubClass)?.foo
if (b != null) {
// 'a' can be cast to SomeSubClass
<!DEBUG_INFO_SMARTCAST!>a<!>.hashCode()
<!DEBUG_INFO_SMARTCAST!>a<!>.foo
(a as? SomeSubClass)<!UNSAFE_CALL!>.<!>foo
(a <!USELESS_CAST!>as SomeSubClass<!>).foo
}
val c = a as? SomeSubClass
if (c != null) {
// 'a' and 'c' can be cast to SomeSubClass
<!DEBUG_INFO_SMARTCAST!>a<!>.hashCode()
<!DEBUG_INFO_SMARTCAST!>a<!>.foo
(a as? SomeSubClass)<!UNSAFE_CALL!>.<!>foo
<!DEBUG_INFO_SMARTCAST!>c<!>.hashCode()
<!DEBUG_INFO_SMARTCAST!>c<!>.foo
}
}