Rewrite DelegatingDataFlowInfo using immutable collections from javaslang

It may be useful because data-flow info is mostly the same for
neighbouring expressions and changes between them should be minor.

Thus, it should help to avoid making copies of huge maps and reusing
them instead

idea/idea-core/src/org/jetbrains/kotlin/idea/core/SmartCastCalculator.kt

@@ -27,7 +27,6 @@ import org.jetbrains.kotlin.idea.util.getImplicitReceiversWithInstance
 import org.jetbrains.kotlin.idea.util.getResolutionScope
 import org.jetbrains.kotlin.psi.KtExpression
 import org.jetbrains.kotlin.resolve.BindingContext
-import org.jetbrains.kotlin.resolve.bindingContextUtil.getDataFlowInfoAfter
 import org.jetbrains.kotlin.resolve.bindingContextUtil.getDataFlowInfoBefore
 import org.jetbrains.kotlin.resolve.calls.smartcasts.*
 import org.jetbrains.kotlin.resolve.scopes.LexicalScope
@@ -35,6 +34,8 @@ import org.jetbrains.kotlin.resolve.scopes.receivers.ImplicitReceiver
 import org.jetbrains.kotlin.types.KotlinType
 import org.jetbrains.kotlin.types.typeUtil.isSubtypeOf
 import org.jetbrains.kotlin.types.typeUtil.makeNotNullable
+import org.jetbrains.kotlin.util.javaslang.component1
+import org.jetbrains.kotlin.util.javaslang.component2
 import java.util.*
 
 class SmartCastCalculator(
@@ -119,10 +120,10 @@ class SmartCastCalculator(
 
         val entityToInfo = HashMap<Any, SmartCastInfo>()
 
-        for ((dataFlowValue, types) in dataFlowInfo.completeTypeInfo.asMap().entries) {
+        for ((dataFlowValue, types) in dataFlowInfo.completeTypeInfo) {
             val entity = dataFlowValueToEntity.invoke(dataFlowValue)
             if (entity != null) {
-                entityToInfo[entity] = SmartCastInfo(types, false)
+                entityToInfo[entity] = SmartCastInfo(types.toJavaList(), false)
             }
         }
 
@@ -141,4 +142,4 @@ class SmartCastCalculator(
         val type = classifier.defaultType
         return getImplicitReceiversWithInstance().firstOrNull { it.type.isSubtypeOf(type) }
     }
-}
+}