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.AdditionalItems != null) AddAdditionalItems(currentNode, schema.AdditionalItems); if (schema.AdditionalProperties != null) AddAdditionalProperties(currentNode, schema.AdditionalProperties); if (schema.Extends != null) { foreach (JsonSchema jsonSchema in schema.Extends) { currentNode = AddSchema(currentNode, jsonSchema); } } return currentNode; }