Compare updated template evaluator (#4092)

src/Sdk/Expressions/EvaluationOptions.cs

@@ -0,0 +1,50 @@
+using System;
+
+namespace GitHub.Actions.Expressions
+{
+    public sealed class EvaluationOptions
+    {
+        public EvaluationOptions()
+        {
+        }
+
+        public EvaluationOptions(EvaluationOptions copy)
+        {
+            if (copy != null)
+            {
+                MaxMemory = copy.MaxMemory;
+                MaxCacheMemory = copy.MaxCacheMemory;
+                StrictJsonParsing = copy.StrictJsonParsing;
+                AlwaysTraceExpanded = copy.AlwaysTraceExpanded;
+            }
+        }
+
+        /// <summary>
+        /// Maximum memory (in bytes) allowed during expression evaluation.
+        /// Memory is tracked across the entire expression tree evaluation to protect against DOS attacks.
+        /// Default is 1 MB (1048576 bytes) if not specified.
+        /// </summary>
+        public Int32 MaxMemory { get; set; }
+
+        /// <summary>
+        /// Maximum memory (in bytes) allowed for caching expanded expression results during tracing.
+        /// When exceeded, the cache is cleared and expressions may not be fully expanded in trace output.
+        /// Default is 1 MB (1048576 bytes) if not specified.
+        /// </summary>
+        public Int32 MaxCacheMemory { get; set; }
+
+        /// <summary>
+        /// Whether to enforce strict JSON parsing in the fromJson function.
+        /// When true, rejects JSON with comments, trailing commas, single quotes, and other non-standard features.
+        /// Default is false if not specified.
+        /// </summary>
+        public Boolean StrictJsonParsing { get; set; }
+
+        /// <summary>
+        /// Whether to always include the expanded expression in trace output.
+        /// When true, the expanded expression is always traced even if it matches the original expression or result.
+        /// Default is false if not specified.
+        /// </summary>
+        public Boolean AlwaysTraceExpanded { get; set; }
+    }
+}