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 +1,35 @@
+import org.jetbrains.annotations.*;
+
+class A {
+
+    /* rare nullable, handle with caution */
+    public String nullableString() {
+        if (Math.random() > 0.999) {
+            return "a string";
+        }
+        return null;
+    }
+
+    public void takesNotNullString(@NotNull String s) {
+        System.out.println(s.substring(1));
+    }
+
+    public void aVoid() {
+        String aString;
+        if (nullableString() != null) {
+            aString = nullableString();
+            if (aString != null) {
+                for (int i = 0; i < 10; i++) {
+                    takesNotNullString(aString); // Bang-bang here
+                    aString = nullableString();
+                }
+            }
+            else {
+                aString = "aaa";
+            }
+        }
+        else {
+            aString = "bbbb";
+        }
+    }
+}