IronRuby.Builtins.RubyClass.MixinsUpdated C# (CSharp) Method

        internal override void MixinsUpdated(RubyModule/*!*/[]/*!*/ oldMixins, RubyModule/*!*/[]/*!*/ newMixins) {
            Context.RequiresClassHierarchyLock();

            // visit newly inserted modules in reverse method resolution order:
            int j = oldMixins.Length - 1;
            for (int i = newMixins.Length - 1; i >= 0; i--) {
                var mixin = newMixins[i];
                if (j < 0 || mixin != oldMixins[j]) {
                    // new module:
                    mixin.AddDependentClass(this);

                    InitializeNewMixin(mixin);
                    Debug.Assert(!mixin.MethodInitializationNeeded || MethodInitializationNeeded);

                    if (!mixin.MethodInitializationNeeded) {
                        foreach (var entry in mixin.GetMethods()) {
                            // Skip mixins that are below the current mixin in MRO:
                            PrepareMethodUpdate(entry.Key, entry.Value, i + 1);
                        }
                    }
                } else {
                    // original module:
                    j--;
                }
            }
            Debug.Assert(j == -1);
        }