1 files changed, 79 insertions, 0 deletions

diff --git a/src/api/wix/WixToolset.Data/Json/JsonObjectExtensions.cs b/src/api/wix/WixToolset.Data/Json/JsonObjectExtensions.cs
new file mode 100644
index 00000000..bc52333c
--- /dev/null
+++ b/src/api/wix/WixToolset.Data/Json/JsonObjectExtensions.cs
@@ -0,0 +1,79 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Data
+{
+    using System;
+    using SimpleJson;
+
+    internal static class JsonObjectExtensions
+    {
+        public static JsonObject AddNonDefaultValue(this JsonObject jsonObject, string key, bool value, bool defaultValue = default(bool))
+        {
+            if (value != defaultValue)
+            {
+                jsonObject.Add(key, value);
+            }
+
+            return jsonObject;
+        }
+
+        public static JsonObject AddNonDefaultValue(this JsonObject jsonObject, string key, int value, int defaultValue = default(int))
+        {
+            if (value != defaultValue)
+            {
+                jsonObject.Add(key, value);
+            }
+
+            return jsonObject;
+        }
+
+        public static JsonObject AddNonDefaultValue(this JsonObject jsonObject, string key, object value, object defaultValue = null)
+        {
+            if (value != defaultValue)
+            {
+                jsonObject.Add(key, value);
+            }
+
+            return jsonObject;
+        }
+
+        public static JsonObject AddIsNotNullOrEmpty(this JsonObject jsonObject, string key, string value)
+        {
+            if (!String.IsNullOrEmpty(value))
+            {
+                jsonObject.Add(key, value);
+            }
+
+            return jsonObject;
+        }
+
+        public static bool GetValueOrDefault(this JsonObject jsonObject, string key, bool defaultValue)
+        {
+            return jsonObject.TryGetValue(key, out var value) ? Convert.ToBoolean(value) : defaultValue;
+        }
+
+        public static int GetValueOrDefault(this JsonObject jsonObject, string key, int defaultValue)
+        {
+            return jsonObject.TryGetValue(key, out var value) ? Convert.ToInt32(value) : defaultValue;
+        }
+
+        public static int? GetValueOrDefault(this JsonObject jsonObject, string key, int? defaultValue)
+        {
+            return jsonObject.TryGetValue(key, out var value) ? Convert.ToInt32(value) : defaultValue;
+        }
+
+        public static T GetValueOrDefault<T>(this JsonObject jsonObject, string key, T defaultValue = default(T)) where T : class
+        {
+            return jsonObject.TryGetValue(key, out var value) ? value as T : defaultValue;
+        }
+
+        public static T GetEnumOrDefault<T>(this JsonObject jsonObject, string key, T defaultValue) where T : struct
+        {
+#if DEBUG
+            if (!typeof(T).IsEnum) { throw new ArgumentException("This method only supports enums.", nameof(T)); }
+#endif
+            var value = jsonObject.GetValueOrDefault<string>(key);
+            return Enum.TryParse(value, true, out T e) ? e : defaultValue;
+        }
+    }
+}