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src/Sdk/DTObjectTemplating/ObjectTemplating/ContextValueNode.cs

@@ -0,0 +1,19 @@
+using System;
+using GitHub.DistributedTask.Expressions2.Sdk;
+
+namespace GitHub.DistributedTask.ObjectTemplating
+{
+    /// <summary>
+    /// This expression node retrieves a user-defined named-value. This is used during expression evaluation.
+    /// </summary>
+    internal sealed class ContextValueNode : NamedValue
+    {
+        protected override Object EvaluateCore(
+            EvaluationContext context,
+            out ResultMemory resultMemory)
+        {
+            resultMemory = null;
+            return (context.State as TemplateContext).ExpressionValues[Name];
+        }
+    }
+}