#136 Insufficient performance 3

Author: NikolayPianikov

src/Pure.DI.Core/Core/Code/VarsMap.cs

@@ -1,4 +1,4 @@
-// ReSharper disable ForeachCanBePartlyConvertedToQueryUsingAnotherGetEnumerator
+// ReSharper disable ForeachCanBePartlyConvertedToQueryUsingAnotherGetEnumerator
 namespace Pure.DI.Core.Code;
 
 /// <summary>
@@ -216,6 +216,15 @@ private void RemoveNewNonPersistentVars(Var var, IReadOnlyDictionary<int, VarSta
 #if DEBUG
         lines.AppendLine($"// remove new non-persistent vars ({reason} {var.Declaration.Name})");
 #endif
+        var currentBindingId = var.AbstractNode.BindingId;
+        var noNewItems =
+            (_map.Count == state.Count && !_map.ContainsKey(currentBindingId))
+            || (_map.Count == state.Count + 1 && _map.ContainsKey(currentBindingId));
+        if (noNewItems)
+        {
+            return;
+        }
+
         var newItems = new List<KeyValuePair<int, Var>>();
         foreach (var item in _map)
         {
@@ -294,6 +303,14 @@ private void RestoreState(Var var, IReadOnlyDictionary<int, VarState> state, Lin
 
         // Find variables that were NOT in the snapshot (newly discovered in the nested scope),
         // and reset their path-specific state to defaults.
+        var noNewItems =
+            (_map.Count == state.Count && !_map.ContainsKey(excludeBindingId))
+            || (_map.Count == state.Count + 1 && _map.ContainsKey(excludeBindingId));
+        if (noNewItems)
+        {
+            return;
+        }
+
         foreach (var item in _map)
         {
             if (state.ContainsKey(item.Key))