NeoVM Runtime Versioning

src/Neo.VM/ExecutionEngine.cs

@@ -27,6 +27,11 @@ public class ExecutionEngine : IDisposable
  private VMState state = VMState.BREAK;
  private bool isJumping = false;
 
+ /// <summary>
+ /// Indicates which version of the runtime this <see cref="ExecutionEngine"/> is using.
+ /// </summary>
+ public RuntimeVersion RuntimeVersion { get; }
+
  /// <summary>
  /// Restrictions on the VM.
  /// </summary>
@@ -93,8 +98,10 @@ public ExecutionEngine() : this(new ReferenceCounter(), ExecutionEngineLimits.De
  /// </summary>
  /// <param name="referenceCounter">The reference counter to be used.</param>
  /// <param name="limits">Restrictions on the VM.</param>
- protected ExecutionEngine(ReferenceCounter referenceCounter, ExecutionEngineLimits limits)
+ /// <param name="version">Indicates which version of the runtime this <see cref="ExecutionEngine"/> should use.</param>
+ protected ExecutionEngine(ReferenceCounter referenceCounter, ExecutionEngineLimits limits, RuntimeVersion version = RuntimeVersion.Latest)
  {
+ this.RuntimeVersion = version;
  this.Limits = limits;
  this.ReferenceCounter = referenceCounter;
  this.ResultStack = new EvaluationStack(referenceCounter);

src/Neo.VM/RuntimeVersion.cs

@@ -0,0 +1,16 @@
+// Copyright (C) 2016-2022 The Neo Project.
+// 
+// The neo-vm is free software distributed under the MIT software license, 
+// see the accompanying file LICENSE in the main directory of the
+// project or http://www.opensource.org/licenses/mit-license.php 
+// for more details.
+// 
+// Redistribution and use in source and binary forms with or without
+// modifications are permitted.
+
+namespace Neo.VM;
+
+public enum RuntimeVersion : byte
+{
+ Latest
+}