System.Security.Permissions.ResourcePermissionBase.IsContentSubset C# (CSharp) Method

        private bool IsContentSubset(object currentContent, object targetContent) {
            //
            if (currentContent is int) {
                int currentAccess = (int)currentContent;
                int targetAccess = (int)targetContent;
                if ((currentAccess & targetAccess) != currentAccess)
                    return false;

                return true;
            }
            else {
                Hashtable currentContentTable = (Hashtable)currentContent;                
                Hashtable targetContentTable = (Hashtable)targetContent;                   
                    
                //If the target table contains a wild card, all the current entries need to be
                //a subset of the target.
                object targetAnyContent = targetContentTable[Any];
                if (targetAnyContent != null) {
                    foreach(DictionaryEntry currentEntry in currentContentTable) {
                        if (!IsContentSubset(currentEntry.Value, targetAnyContent)) {
                            return false;                        
                        }
                    }                    
                    return true;
                }

                //Check the entries for remote machines first
                foreach(DictionaryEntry currentEntry in currentContentTable) {
                    string currentContentKey = (string)currentEntry.Key;
                    if (currentContentKey != Local && currentContentKey != ComputerName) {
                        if (!targetContentTable.ContainsKey(currentContentKey)) {
                            return false;
                        }
                        else if (!IsContentSubset(currentEntry.Value, targetContentTable[currentContentKey])) {
                            return false;
                        }
                    }                        
                }
        
                // Entries for "." and local machine name apply to the same target.
                // Merge them before further processing.
                object currentLocalMergedContent = MergeContents(currentContentTable[Local], currentContentTable[ComputerName]);
                if (currentLocalMergedContent != null ) {
                    object targetLocalMergedContent  = MergeContents(targetContentTable[Local], targetContentTable[ComputerName]);
                    if (targetLocalMergedContent != null) {
                        return IsContentSubset(currentLocalMergedContent, targetLocalMergedContent); 
                    }
                    else if (!IsEmpty) {
                        return false;
                    }
                }
                return true;
            }
        }