Cache hashCode for DataFlowValue in another field

It's necessary because DataFlowValue instances are commonly used as keys in maps #KT-24657 Fixed
2018-07-20 16:27:08 +03:00
parent e5507108ed
commit d20e5ce673
1 changed files with 12 additions and 1 deletions
@@ -90,7 +90,18 @@ class DataFlowValue(

    override fun toString() = "$kind $identifierInfo $immanentNullability"

-    override fun hashCode() = type.hashCode() + 31 * identifierInfo.hashCode()
+    private var hashCode = 0
+
+    override fun hashCode(): Int {
+        var hashCode = hashCode
+
+        if (hashCode == 0) {
+            hashCode = type.hashCode() + 31 * identifierInfo.hashCode()
+            this.hashCode = hashCode
+        }
+
+        return hashCode
+    }

    companion object {