Prevent early deleting of not-null assertions

Before val to var conversion applied, smart-cast can cause dropping not-null assertion, which will be required when val will become var
2017-05-29 15:24:23 +03:00
parent e41c027c9a
commit a6e153312c
5 changed files with 89 additions and 5 deletions
@@ -0,0 +1,32 @@
+import org.jetbrains.annotations.*
+
+internal class A {
+
+    /* rare nullable, handle with caution */
+    fun nullableString(): String? {
+        return if (Math.random() > 0.999) {
+            "a string"
+        } else null
+    }
+
+    fun takesNotNullString(s: String) {
+        println(s.substring(1))
+    }
+
+    fun aVoid() {
+        var aString: String?
+        if (nullableString() != null) {
+            aString = nullableString()
+            if (aString != null) {
+                for (i in 0..9) {
+                    takesNotNullString(aString!!) // Bang-bang here
+                    aString = nullableString()
+                }
+            } else {
+                aString = "aaa"
+            }
+        } else {
+            aString = "bbbb"
+        }
+    }
+}