Jurassic.Library.HiddenClassSchema.AddProperty C# (CSharp) Method

        public HiddenClassSchema AddProperty(object key, PropertyAttributes attributes = PropertyAttributes.FullAccess)
        {
            // Package the name and attributes into a struct.
            var transitionInfo = new TransitionInfo() { Key = key, Attributes = attributes };

            // Check if there is a transition to the schema already.
            HiddenClassSchema newSchema = null;
            if (this.addTransitions != null)
                this.addTransitions.TryGetValue(transitionInfo, out newSchema);

            if (newSchema == null)
            {
                if (this.parent == null)
                {
                    // Create a new schema based on this one.  A complete copy must be made of the properties hashtable.
                    var properties = new Dictionary<object, SchemaProperty>(this.properties);
                    properties.Add(key, new SchemaProperty(this.NextValueIndex, attributes));
                    newSchema = new HiddenClassSchema(properties, this.NextValueIndex + 1, this, transitionInfo);
                }
                else
                {
                    // Create a new schema based on this one.  The properties hashtable is "given
                    // away" so a copy does not have to be made.
                    if (this.properties == null)
                        this.properties = CreatePropertiesDictionary();
                    this.properties.Add(key, new SchemaProperty(this.NextValueIndex, attributes));
                    newSchema = new HiddenClassSchema(this.properties, this.NextValueIndex + 1, this, transitionInfo);
                    this.properties = null;
                }

                // Add a transition to the new schema.
                if (this.addTransitions == null)
                    this.addTransitions = new Dictionary<TransitionInfo, HiddenClassSchema>(1);
                this.addTransitions.Add(transitionInfo, newSchema);
            }

            return newSchema;
        }