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Limit "always null" scope: only for !!, is and dot; senseless comparison rolled back; "smart constant" information for nulls #KT-10029 Fixed

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This commit is contained in:
Mikhail Glukhikh
2015-11-23 14:50:20 +03:00
parent db42941586
commit 89e56093a2
41 changed files with 323 additions and 151 deletions
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compiler/testData/diagnostics/tests/smartCasts/alwaysNull.kt
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+14 -2
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@@ -1,11 +1,23 @@
fun foo(): String {
var s: String?
s = null
<!ALWAYS_NULL!>s<!>?.length
if (<!ALWAYS_NULL!>s<!> == null) s = "z"
<!DEBUG_INFO_CONSTANT!>s<!>?.length
<!ALWAYS_NULL!>s<!><!UNSAFE_CALL!>.<!>length
if (<!SENSELESS_COMPARISON!><!DEBUG_INFO_CONSTANT!>s<!> == null<!>) return <!ALWAYS_NULL!>s<!>!!
var t: String? = "y"
if (t == null) t = "x"
var x: Int? = null
if (x == null) <!TYPE_MISMATCH!>x += null<!>
return <!DEBUG_INFO_SMARTCAST!>t<!> + s
}
fun String?.gav() {}
fun bar(s: String?) {
if (s != null) return
// Ideally we should have DEBUG_INFO_CONSTANT instead
<!ALWAYS_NULL!>s<!>.gav()
<!DEBUG_INFO_CONSTANT!>s<!> as? String
<!DEBUG_INFO_CONSTANT!>s<!> <!USELESS_CAST!>as String?<!>
<!ALWAYS_NULL!>s<!> as String
}