public JsonSchemaModel Build(JsonSchema schema)
    {
      _nodes = new JsonSchemaNodeCollection();
      _node = AddSchema(null, schema);

      _nodeModels = new Dictionary<JsonSchemaNode, JsonSchemaModel>();
      JsonSchemaModel model = BuildNodeModel(_node);

      return model;
    }
    private JsonSchemaNode(JsonSchemaNode source, JsonSchema schema)
    {
      Schemas = new ReadOnlyCollection<JsonSchema>(source.Schemas.Union(new[] { schema }).ToList());
      Properties = new Dictionary<string, JsonSchemaNode>(source.Properties);
      PatternProperties = new Dictionary<string, JsonSchemaNode>(source.PatternProperties);
      Items = new List<JsonSchemaNode>(source.Items);
      AdditionalProperties = source.AdditionalProperties;

      Id = GetId(Schemas);
    }
    public JsonSchemaNode AddSchema(JsonSchemaNode existingNode, JsonSchema schema)
    {
      string newId;
      if (existingNode != null)
      {
        if (existingNode.Schemas.Contains(schema))
          return existingNode;

        newId = JsonSchemaNode.GetId(existingNode.Schemas.Union(new[] { schema }));
      }
      else
      {
        newId = JsonSchemaNode.GetId(new[] { schema });
      }

      if (_nodes.Contains(newId))
        return _nodes[newId];

      JsonSchemaNode currentNode = (existingNode != null)
        ? existingNode.Combine(schema)
        : new JsonSchemaNode(schema);

      _nodes.Add(currentNode);

      AddProperties(schema.Properties, currentNode.Properties);

      AddProperties(schema.PatternProperties, currentNode.PatternProperties);

      if (schema.Items != null)
      {
        for (int i = 0; i < schema.Items.Count; i++)
        {
          AddItem(currentNode, i, schema.Items[i]);
        }
      }

      if (schema.AdditionalProperties != null)
        AddAdditionalProperties(currentNode, schema.AdditionalProperties);

      if (schema.Extends != null)
        currentNode = AddSchema(currentNode, schema.Extends);

      return currentNode;
    }
    private JsonSchemaModel BuildNodeModel(JsonSchemaNode node)
    {
      JsonSchemaModel model;
      if (_nodeModels.TryGetValue(node, out model))
        return model;
      
      model = JsonSchemaModel.Create(node.Schemas);
      _nodeModels[node] = model;

      foreach (KeyValuePair<string, JsonSchemaNode> property in node.Properties)
      {
        if (model.Properties == null)
          model.Properties = new Dictionary<string, JsonSchemaModel>();

        model.Properties[property.Key] = BuildNodeModel(property.Value);
      }
      foreach (KeyValuePair<string, JsonSchemaNode> property in node.PatternProperties)
      {
        if (model.PatternProperties == null)
          model.PatternProperties = new Dictionary<string, JsonSchemaModel>();

        model.PatternProperties[property.Key] = BuildNodeModel(property.Value);
      }
      foreach (JsonSchemaNode t in node.Items)
      {
        if (model.Items == null)
          model.Items = new List<JsonSchemaModel>();

        model.Items.Add(BuildNodeModel(t));
      }
      if (node.AdditionalProperties != null)
        model.AdditionalProperties = BuildNodeModel(node.AdditionalProperties);

      return model;
    }
 public void AddAdditionalProperties(JsonSchemaNode parentNode, JsonSchema schema)
 {
   parentNode.AdditionalProperties = AddSchema(parentNode.AdditionalProperties, schema);
 }
    public void AddItem(JsonSchemaNode parentNode, int index, JsonSchema schema)
    {
      JsonSchemaNode existingItemNode = (parentNode.Items.Count > index)
                                  ? parentNode.Items[index]
                                  : null;

      JsonSchemaNode newItemNode = AddSchema(existingItemNode, schema);
      
      if (!(parentNode.Items.Count > index))
      {
        parentNode.Items.Add(newItemNode);
      }
      else
      {
        parentNode.Items[index] = newItemNode;
      }
    }