同步

Packages/dev.yarnspinner.unity/Editor/Analysis/EnumerableExtensions.cs

@@ -0,0 +1,29 @@
+/*
+Yarn Spinner is licensed to you under the terms found in the file LICENSE.md.
+*/
+
+using System;
+using System.Collections.Generic;
+
+#nullable enable
+
+static class EnumerableExtensions
+{
+    public static IEnumerable<T> NonNull<T>(this IEnumerable<T?> collection, bool throwIfAnyNull = false) where T : class
+    {
+        foreach (var item in collection)
+        {
+            if (item != null)
+            {
+                yield return item;
+            }
+            else
+            {
+                if (throwIfAnyNull)
+                {
+                    throw new NullReferenceException("Collection contains a null item");
+                }
+            }
+        }
+    }
+}