public JsonSchemaRefAttribute(Type tagType, InfluenceRange influence = InfluenceRange.Entiry)
{
Type schemaBaseType;
if (!RefChecker.IsRefTagDerived(tagType, out schemaBaseType))
{
throw new ArgumentException("IRefTag<T> must be derived by tagType");
}
TagType = tagType;
Influence = influence;
}
public static JsonSchemaAttribute CreateFromType(Type ty, JsonSchemaRegistory reg = null, bool asRef = false)
{
var kind = Node.KindOfType(ty);
switch (kind)
{
case NodeKind.Boolean:
return(new JsonSchemaAttribute
{
Type = "boolean",
});
case NodeKind.Integer:
object[] enumsForInteger = null;
if (TypeHelper.TypeWrap(ty).IsEnum)
{
enumsForInteger = System.Enum.GetValues(ty).Cast <object>().ToArray();
}
return(new JsonSchemaAttribute
{
Type = "integer",
Enum = enumsForInteger,
});
case NodeKind.Float:
return(new JsonSchemaAttribute
{
Type = "number",
});
case NodeKind.String:
object[] enumsForString = null;
if (TypeHelper.TypeWrap(ty).IsEnum)
{
enumsForString = TypeHelper.GetStringEnumNames(ty);
}
return(new JsonSchemaAttribute
{
Type = "string",
Enum = enumsForString,
});
case NodeKind.Array:
var elemTy = TypeHelper.ElemTypeOfIEnumerable(ty);
return(new JsonSchemaAttribute
{
Type = "array",
Items = elemTy != null?CreateFromType(elemTy, reg, true) : null,
});
case NodeKind.Object:
if (ty == typeof(object))
{
return(new JsonSchemaAttribute());
}
if (TypeHelper.TypeWrap(ty).IsGenericType&& ty.GetGenericTypeDefinition() == typeof(Dictionary <,>))
{
return(new JsonSchemaAttribute
{
Type = "object",
});
}
break;
default:
throw new NotImplementedException();
}
if (reg == null)
{
reg = JsonSchemaRegistory.GetDefault();
}
var schema = TypeHelper.GetCustomAttribute <JsonSchemaAttribute>(ty);
if (schema == null)
{
schema = new JsonSchemaAttribute();
}
schema.Type = "object";
var schemaId = schema.Id;
if (schemaId == null)
{
schemaId = ty.ToString();
}
var refSchema = reg.Resolve(schemaId);
if (refSchema != null)
{
schema = refSchema;
goto skip;
}
else
{
reg.Register(schemaId, schema);
}
var baseType = TypeHelper.TypeWrap(ty).BaseType;
HashSet <string> baseFieldNames = null;
if (baseType != null)
{
Type schemaBaseType;
if (RefChecker.IsRefTag(baseType, out schemaBaseType))
{
var baseSchemaValue = CreateFromType(schemaBaseType, reg, false);
schema.Type = baseSchemaValue.Type;
goto skip;
}
// Nest fields included in the base class
var baseSchema = CreateFromType(baseType, reg, true);
if (baseSchema != null && baseSchema.Ref != null)
{
schema.AddToAllOf(baseSchema);
var baseFields = TypeHelper.TypeWrap(baseType).GetFields(BindingFlags.Public | BindingFlags.Instance);
baseFieldNames = new HashSet <string>(baseFields.Select(f => f.Name));
}
}
var properties = new Dictionary <string, JsonSchemaAttribute>();
var required = new List <string>();
var dependencies = new Dictionary <string, string[]>();
var fields = TypeHelper.TypeWrap(ty).GetFields(BindingFlags.Public | BindingFlags.Instance);
foreach (var field in fields)
{
var fieldType = field.FieldType;
JsonSchemaAttribute fieldSchema = null;
var attr = TypeHelper.GetCustomAttribute <JsonFieldAttribute>(field);
var elemName = JsonFieldAttribute.FieldName(attr, field); // TODO: duplication check
// If elements are also included in Base classes, skip collecting a schema for the elements.
if (baseFieldNames != null && baseFieldNames.Contains(field.Name))
{
fieldSchema = new JsonSchemaAttribute();
goto skipField;
}
fieldSchema = TypeHelper.GetCustomAttribute <JsonSchemaAttribute>(field);
if (fieldSchema == null)
{
fieldSchema = new JsonSchemaAttribute();
}
var fieldItemsSchema = TypeHelper.GetCustomAttribute <ItemsJsonSchemaAttribute>(field);
if (fieldItemsSchema != null)
{
fieldSchema.Items = fieldItemsSchema;
}
if (attr != null && attr.DynamicResolverTag != null)
{
if (!TypeHelper.TypeWrap(fieldType).IsGenericType || fieldType.GetGenericTypeDefinition() != typeof(Dictionary <,>))
{
var baseMsg = "A type of the field which has DynamicResolver must be a Dictionary<,>";
var msg = string.Format("{0}: Type = {1} at \"{2}\" of {3}", baseMsg, fieldType, elemName, ty);
throw new ArgumentException(msg);
}
var keyType = TypeHelper.TypeWrap(fieldType).GetGenericArguments()[0];
if (keyType != typeof(string))
{
var baseMsg = "A key of the dictionary which has DynamicResolver must be a string type";
var msg = string.Format("{0}: KeyType = {1} at \"{2}\" of {3}", baseMsg, keyType, elemName, ty);
throw new ArgumentException(msg);
}
fieldSchema._dynamicResolverTag = attr.DynamicResolverTag;
}
var fieldItemRequired = TypeHelper.GetCustomAttribute <JsonSchemaRequiredAttribute>(field);
if (fieldItemRequired != null)
{
required.Add(elemName);
}
var fieldItemDependencies = TypeHelper.GetCustomAttribute <JsonSchemaDependenciesAttribute>(field);
if (fieldItemDependencies != null)
{
dependencies.Add(elemName, fieldItemDependencies.Dependencies);
}
var fieldTypeSchema = CreateFromType(fieldType, reg, true);
if (fieldTypeSchema.Ref != null)
{
fieldSchema = fieldTypeSchema;
}
else
{
// Update
if (fieldSchema.Type == null)
{
fieldSchema.Type = fieldTypeSchema.Type;
}
if (fieldSchema.Enum == null)
{
fieldSchema.Enum = fieldTypeSchema.Enum;
}
if (fieldTypeSchema.Items != null)
{
var fieldTypeSchemaItems = fieldTypeSchema.Items as JsonSchemaAttribute;
if (fieldTypeSchemaItems.Ref != null)
{
fieldSchema.Items = fieldTypeSchemaItems;
}
else
{
if (fieldTypeSchemaItems.Type != null)
{
var fieldSchemaItems = fieldSchema.Items as JsonSchemaAttribute;
if (fieldSchemaItems != null)
{
fieldSchemaItems.Type = fieldTypeSchemaItems.Type;
}
else
{
fieldSchema.Items = new JsonSchemaAttribute
{
Type = fieldTypeSchemaItems.Type,
};
}
}
if (fieldTypeSchemaItems.Enum != null)
{
var fieldSchemaItems = fieldSchema.Items as JsonSchemaAttribute;
fieldSchemaItems.Enum = fieldTypeSchemaItems.Enum;
}
}
}
}
// Add custom refs to AllOf not to override constrains which already existing.
var customRef = TypeHelper.GetCustomAttribute <JsonSchemaRefAttribute>(field);
if (customRef != null)
{
Type schemaBaseType;
if (!RefChecker.IsRefTagDerived(customRef.TagType, out schemaBaseType))
{
throw new ArgumentException("IRefTag<T> must be derived by tagType");
}
var customSchema = CreateFromType(customRef.TagType, reg, true);
switch (customRef.Influence)
{
case InfluenceRange.Entiry:
fieldSchema.AddToAllOf(customSchema);
break;
case InfluenceRange.AdditionalProperties:
if (fieldSchema.AdditionalProperties == null)
{
fieldSchema.AdditionalProperties = new JsonSchemaAttribute();
}
fieldSchema.AdditionalProperties.AddToAllOf(customSchema);
break;
}
}
// Add custom refs to AllOf not to override constrains which already existing.
var customItemsRef = TypeHelper.GetCustomAttribute <ItemsJsonSchemaRefAttribute>(field);
if (customItemsRef != null)
{
Type schemaBaseType;
if (!RefChecker.IsRefTagDerived(customItemsRef.TagType, out schemaBaseType))
{
throw new ArgumentException("IRefTag<T> must be derived by tagType");
}
var customSchema = CreateFromType(customItemsRef.TagType, reg, true);
switch (customItemsRef.Influence)
{
case InfluenceRange.Entiry:
if (fieldSchema.Items == null)
{
fieldSchema.Items = new JsonSchemaAttribute();
}
((JsonSchemaAttribute)fieldSchema.Items).AddToAllOf(customSchema);
break;
case InfluenceRange.AdditionalProperties:
if (fieldSchema.Items == null)
{
fieldSchema.Items = new JsonSchemaAttribute();
}
if (((JsonSchemaAttribute)fieldSchema.Items).AdditionalProperties == null)
{
((JsonSchemaAttribute)fieldSchema.Items).AdditionalProperties =
new JsonSchemaAttribute();
}
((JsonSchemaAttribute)fieldSchema.Items).AdditionalProperties.AddToAllOf(customSchema);
break;
}
}
skipField:
properties.Add(elemName, fieldSchema);
}
schema.Properties = properties;
if (required.Count != 0)
{
schema.Required = required.ToArray();
}
if (dependencies.Count != 0)
{
schema.Dependencies = dependencies;
}
skip:
if (asRef)
{
return(new JsonSchemaAttribute
{
Ref = schemaId,
});
}
return(schema);
}
