private JsonSchema BuildSchema()
{
if (_reader.TokenType != JsonToken.StartObject)
{
throw new Exception("Expected StartObject while parsing schema object, got {0}.".FormatWith(CultureInfo.InvariantCulture, _reader.TokenType));
}
_reader.Read();
// empty schema object
if (_reader.TokenType == JsonToken.EndObject)
{
Push(new JsonSchema());
return(Pop());
}
string propertyName = Convert.ToString(_reader.Value, CultureInfo.InvariantCulture);
_reader.Read();
// schema reference
if (propertyName == JsonSchemaConstants.ReferencePropertyName)
{
string id = (string)_reader.Value;
// skip to the end of the current object
while (_reader.Read() && _reader.TokenType != JsonToken.EndObject)
{
if (_reader.TokenType == JsonToken.StartObject)
{
throw new Exception("Found StartObject within the schema reference with the Id '{0}'"
.FormatWith(CultureInfo.InvariantCulture, id));
}
}
JsonSchema referencedSchema = _resolver.GetSchema(id);
if (referencedSchema == null)
{
throw new Exception("Could not resolve schema reference for Id '{0}'.".FormatWith(CultureInfo.InvariantCulture, id));
}
return(referencedSchema);
}
// regular ol' schema object
Push(new JsonSchema());
ProcessSchemaProperty(propertyName);
while (_reader.Read() && _reader.TokenType != JsonToken.EndObject)
{
propertyName = Convert.ToString(_reader.Value, CultureInfo.InvariantCulture);
_reader.Read();
ProcessSchemaProperty(propertyName);
}
return(Pop());
}
private void ReferenceOrWriteSchema(JsonSchema schema)
{
if (schema.Id != null && _resolver.GetSchema(schema.Id) != null)
{
_writer.WriteStartObject();
_writer.WritePropertyName(JsonSchemaConstants.ReferencePropertyName);
_writer.WriteValue(schema.Id);
_writer.WriteEndObject();
}
else
{
WriteSchema(schema);
}
}
private JsonSchema ResolveReferences(JsonSchema schema)
{
if (schema.DeferredReference != null)
{
string reference = schema.DeferredReference;
bool locationReference = (reference.StartsWith("#", StringComparison.OrdinalIgnoreCase));
if (locationReference)
{
reference = UnescapeReference(reference);
}
JsonSchema resolvedSchema = _resolver.GetSchema(reference);
if (resolvedSchema == null)
{
if (locationReference)
{
string[] escapedParts = schema.DeferredReference.TrimStart('#').Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
JToken currentToken = _rootSchema;
foreach (string escapedPart in escapedParts)
{
string part = UnescapeReference(escapedPart);
if (currentToken.Type == JTokenType.Object)
{
currentToken = currentToken[part];
}
else if (currentToken.Type == JTokenType.Array || currentToken.Type == JTokenType.Constructor)
{
int index;
if (int.TryParse(part, out index) && index >= 0 && index < currentToken.Count())
{
currentToken = currentToken[index];
}
else
{
currentToken = null;
}
}
if (currentToken == null)
{
break;
}
}
if (currentToken != null)
{
resolvedSchema = BuildSchema(currentToken);
}
}
if (resolvedSchema == null)
{
throw new JsonException("Could not resolve schema reference '{0}'.".FormatWith(CultureInfo.InvariantCulture, schema.DeferredReference));
}
}
schema = resolvedSchema;
}
if (schema.ReferencesResolved)
{
return(schema);
}
schema.ReferencesResolved = true;
if (schema.Extends != null)
{
for (int i = 0; i < schema.Extends.Count; i++)
{
schema.Extends[i] = ResolveReferences(schema.Extends[i]);
}
}
if (schema.Items != null)
{
for (int i = 0; i < schema.Items.Count; i++)
{
schema.Items[i] = ResolveReferences(schema.Items[i]);
}
}
if (schema.AdditionalItems != null)
{
schema.AdditionalItems = ResolveReferences(schema.AdditionalItems);
}
if (schema.PatternProperties != null)
{
foreach (KeyValuePair <string, JsonSchema> patternProperty in schema.PatternProperties.ToList())
{
schema.PatternProperties[patternProperty.Key] = ResolveReferences(patternProperty.Value);
}
}
if (schema.Properties != null)
{
foreach (KeyValuePair <string, JsonSchema> property in schema.Properties.ToList())
{
schema.Properties[property.Key] = ResolveReferences(property.Value);
}
}
if (schema.AdditionalProperties != null)
{
schema.AdditionalProperties = ResolveReferences(schema.AdditionalProperties);
}
return(schema);
}
private JsonSchema GenerateInternal(Type type, Required valueRequired, bool required)
{
ValidationUtils.ArgumentNotNull(type, "type");
string resolvedId = GetTypeId(type, false);
string explicitId = GetTypeId(type, true);
if (!string.IsNullOrEmpty(resolvedId))
{
JsonSchema resolvedSchema = _resolver.GetSchema(resolvedId);
if (resolvedSchema != null)
{
// resolved schema is not null but referencing member allows nulls
// change resolved schema to allow nulls. hacky but what are ya gonna do?
if (valueRequired != Required.Always && !HasFlag(resolvedSchema.Type, JsonSchemaType.Null))
{
resolvedSchema.Type |= JsonSchemaType.Null;
}
if (required && resolvedSchema.Required != true)
{
resolvedSchema.Required = true;
}
return(resolvedSchema);
}
}
// test for unresolved circular reference
if (_stack.Any(tc => tc.Type == type))
{
throw new JsonException("Unresolved circular reference for type '{0}'. Explicitly define an Id for the type using a JsonObject/JsonArray attribute or automatically generate a type Id using the UndefinedSchemaIdHandling property.".FormatWith(CultureInfo.InvariantCulture, type));
}
JsonContract contract = ContractResolver.ResolveContract(type);
JsonConverter converter;
if ((converter = contract.Converter) != null || (converter = contract.InternalConverter) != null)
{
JsonSchema converterSchema = converter.GetSchema();
if (converterSchema != null)
{
return(converterSchema);
}
}
Push(new TypeSchema(type, new JsonSchema()));
if (explicitId != null)
{
CurrentSchema.Id = explicitId;
}
if (required)
{
CurrentSchema.Required = true;
}
CurrentSchema.Title = GetTitle(type);
CurrentSchema.Description = GetDescription(type);
if (converter != null)
{
// todo: Add GetSchema to JsonConverter and use here?
CurrentSchema.Type = JsonSchemaType.Any;
}
else
{
switch (contract.ContractType)
{
case JsonContractType.Object:
CurrentSchema.Type = AddNullType(JsonSchemaType.Object, valueRequired);
CurrentSchema.Id = GetTypeId(type, false);
GenerateObjectSchema(type, (JsonObjectContract)contract);
break;
case JsonContractType.Array:
CurrentSchema.Type = AddNullType(JsonSchemaType.Array, valueRequired);
CurrentSchema.Id = GetTypeId(type, false);
JsonArrayAttribute arrayAttribute = JsonTypeReflector.GetJsonContainerAttribute(type) as JsonArrayAttribute;
bool allowNullItem = (arrayAttribute == null || arrayAttribute.AllowNullItems);
Type collectionItemType = ReflectionUtils.GetCollectionItemType(type);
if (collectionItemType != null)
{
CurrentSchema.Items = new List <JsonSchema>();
CurrentSchema.Items.Add(GenerateInternal(collectionItemType, (!allowNullItem) ? Required.Always : Required.Default, false));
}
break;
case JsonContractType.Primitive:
CurrentSchema.Type = GetJsonSchemaType(type, valueRequired);
if (CurrentSchema.Type == JsonSchemaType.Integer && type.IsEnum() && !type.IsDefined(typeof(FlagsAttribute), true))
{
CurrentSchema.Enum = new List <JToken>();
EnumValues <long> enumValues = EnumUtils.GetNamesAndValues <long>(type);
foreach (EnumValue <long> enumValue in enumValues)
{
JToken value = JToken.FromObject(enumValue.Value);
CurrentSchema.Enum.Add(value);
}
}
break;
case JsonContractType.String:
JsonSchemaType schemaType = (!ReflectionUtils.IsNullable(contract.UnderlyingType))
? JsonSchemaType.String
: AddNullType(JsonSchemaType.String, valueRequired);
CurrentSchema.Type = schemaType;
break;
case JsonContractType.Dictionary:
CurrentSchema.Type = AddNullType(JsonSchemaType.Object, valueRequired);
Type keyType;
Type valueType;
ReflectionUtils.GetDictionaryKeyValueTypes(type, out keyType, out valueType);
if (keyType != null)
{
JsonContract keyContract = ContractResolver.ResolveContract(keyType);
// can be converted to a string
if (keyContract.ContractType == JsonContractType.Primitive)
{
CurrentSchema.AdditionalProperties = GenerateInternal(valueType, Required.Default, false);
}
}
break;
case JsonContractType.Dynamic:
case JsonContractType.Linq:
CurrentSchema.Type = JsonSchemaType.Any;
break;
default:
throw new JsonException("Unexpected contract type: {0}".FormatWith(CultureInfo.InvariantCulture, contract));
}
}
return(Pop().Schema);
}