Compare updated template evaluator (#4092)

src/Sdk/Expressions/Data/JTokenExtensions.cs

@@ -0,0 +1,64 @@
+#nullable disable // Consider removing in the future to minimize likelihood of NullReferenceException; refer https://learn.microsoft.com/en-us/dotnet/csharp/nullable-references
+
+using System;
+using Newtonsoft.Json.Linq;
+
+namespace GitHub.Actions.Expressions.Data
+{
+    public static class JTokenExtensions
+    {
+        public static ExpressionData ToExpressionData(this JToken value)
+        {
+            return value.ToExpressionData(1, 100);
+        }
+
+        public static ExpressionData ToExpressionData(
+            this JToken value, 
+            Int32 depth, 
+            Int32 maxDepth)
+        {
+            if (depth < maxDepth)
+            {
+                if (value.Type == JTokenType.String)
+                {
+                    return new StringExpressionData((String)value);
+                }
+                else if (value.Type == JTokenType.Boolean)
+                {
+                    return new BooleanExpressionData((Boolean)value);
+                }
+                else if (value.Type == JTokenType.Float || value.Type == JTokenType.Integer)
+                {
+                    return new NumberExpressionData((Double)value);
+                }
+                else if (value.Type == JTokenType.Object)
+                {
+                    var subContext = new DictionaryExpressionData();
+                    var obj = (JObject)value;
+                    foreach (var property in obj.Properties())
+                    {
+                        subContext[property.Name] = ToExpressionData(property.Value, depth + 1, maxDepth);
+                    }
+                    return subContext;
+                }
+                else if (value.Type == JTokenType.Array)
+                {
+                    var arrayContext = new ArrayExpressionData();
+                    var arr = (JArray)value;
+                    foreach (var element in arr)
+                    {
+                        arrayContext.Add(ToExpressionData(element, depth + 1, maxDepth));
+                    }
+                    return arrayContext;
+                }
+                else if (value.Type == JTokenType.Null)
+                {
+                    return null;
+                }
+            }
+
+            // We don't understand the type or have reached our max, return as string
+            return new StringExpressionData(value.ToString());
+        }
+    }
+}