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FIR DFA: store stability in RealVariable

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As part of this change, we also extend the usage of RealVariable in more
places during DFA. Now mutable properties, property with custom getters,
delegated properties, etc are also treatd as a `RealVariable`. In
general this is needed in order to carry out smartcast computation in
order to report `SMARTCAST_IMPOSSIBLE`. It seems to also have side
effects that improves behavior of some test files.
This commit is contained in:
Tianyu Geng
2021-05-07 21:20:17 -07:00
committed by Dmitriy Novozhilov
parent 96bd2c54f0
commit 62f7e8f71f
9 changed files with 147 additions and 73 deletions
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compiler/testData/diagnostics/tests/inference/nestedCalls/makeNullableIfSafeCall.fir.kt
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+2 -2
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@@ -14,13 +14,13 @@ fun test(u: A?, x: A?, y: A?, z: A?, w: A, v: A?) {
u!!.b<!UNNECESSARY_SAFE_CALL!>?.<!>foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
x?.b!!.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
// x?.b is not null
x!!.b<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
x<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>.b<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
y?.nb?.foo()!!
y!!.nb?.foo()!!
z?.nb!!.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
// z?.nb is not null
z!!.nb!!.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
z<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>.nb!!.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
w.b<!UNNECESSARY_SAFE_CALL!>?.<!>foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>
w.b<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>.foo()<!UNNECESSARY_NOT_NULL_ASSERTION!>!!<!>