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Add IDEA data-flow analysis to guess nullability

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Add "if return..." folding to "return if"
This commit is contained in:
Simon Ogorodnik
2017-05-25 15:54:10 +03:00
parent 1f26353de4
commit e41c027c9a
24 changed files with 261 additions and 40 deletions
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j2k/testData/fileOrElement/nullability/nullableInitializer1.kt
Vendored
+4 -6
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@@ -1,20 +1,18 @@
// ERROR: Type mismatch: inferred type is String? but String was expected
// ERROR: Type mismatch: inferred type is String? but String was expected
class Test {
fun nullableString(p: Int): String? {
return if (p > 0) "response" else null
}
private var nullableInitializerField: String = nullableString(3)
private var nullableInitializerField = nullableString(3)
private val nullableInitializerFieldFinal = nullableString(3)
var nullableInitializerPublicField: String = nullableString(3)
var nullableInitializerPublicField = nullableString(3)
fun testProperty() {
nullableInitializerField = "aaa"
nullableInitializerField[0]
nullableInitializerField!![0]
nullableInitializerFieldFinal!![0]
nullableInitializerPublicField[0]
nullableInitializerPublicField!![0]
}
fun testLocalVariable() {