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copied!<p><strong>EDIT:</strong> This doesn't work in the case of virtual method calls where the IL is <code>callvirt</code>. See my question <a href="https://stackoverflow.com/questions/6454181/how-to-get-the-method-actually-called-by-the-callvirt-il-instruction-within-fxcop">here</a>.</p> <p>I managed to work it out, by discovering the method <code>CallGraph.CallersFor()</code>. I'm now looking for methods declared with a given attribute, or declared by a class with a given attribute, but the principal is the same.</p> <pre><code>using System; using System.Linq; using Microsoft.FxCop.Sdk; using System.Collections.Generic; class CheckUpdatableComponents : BaseIntrospectionRule { // private string[] MethodsToCheckNames = new string[] { "BeginDraw", "BeginRun", "Draw", "EndRun", "EndDraw", "Update" }; /// <summary>Gets the base class hooked up.</summary> public CheckUpdatableComponents() : base("CheckUpdatableComponents", "FxCopRules.Rules", typeof(CheckUpdatableComponents).Assembly) { } public override ProblemCollection Check(Member member) { Method method = member as Method; if (method != null) { if (ShouldCheckMethod(method)) { foreach (var Instruction in method.Instructions) { if (Instruction.NodeType == NodeType.Box || Instruction.NodeType == NodeType.Unbox || Instruction.NodeType == NodeType.UnboxAny || Instruction.OpCode == OpCode.Box || Instruction.OpCode == OpCode.Unbox || Instruction.OpCode == OpCode.Unbox_Any) { Problems.Add(new Problem(GetResolution(), Instruction, Instruction.SourceContext.StartLine.ToString())); } } } } return Problems; } public bool ShouldCheckMethod(Method method) { Queue<Method> MethodsToCheck = new Queue<Method>(); List<Method> MethodsChecked = new List<Method>(); MethodsToCheck.Enqueue(method); while (MethodsToCheck.Count != 0) { Method MethodToCheck = MethodsToCheck.Dequeue(); if (!MethodsChecked.Contains(MethodToCheck) && MethodToCheck != null) { /*if (IsSubClassOf(MethodToCheck.DeclaringType, "Microsoft.Xna.Framework.Game") && MethodsToCheckNames.Contains(MethodToCheck.Name.Name)) { return true; }*/ foreach (var attribute in MethodToCheck.Attributes.Union(MethodToCheck.DeclaringType.Attributes)) { if (attribute.Type != null && attribute.Type.FullName == "GridEngine.Components.Debugging.Attributes.FxCop.PerformanceCriticalAttribute") { return true; } } // Add methods up the class tree MethodsToCheck.Enqueue(MethodToCheck.OverriddenMethod); MethodsToCheck.Enqueue(MethodToCheck.HiddenMethod); // Add calling methods foreach (var CallingMethod in CallGraph.CallersFor(MethodToCheck)) { MethodsToCheck.Enqueue(CallingMethod); } } MethodsChecked.Add(MethodToCheck); } return false; } private bool IsSubClassOf(TypeNode type, string typeName) { if (type.FullName == typeName) return true; if (type.BaseType == null) return false; else return IsSubClassOf(type.BaseType, typeName); } } </code></pre>

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