private ParseStringDelegate GetCoreParseFn <T>()
{
var type = Nullable.GetUnderlyingType(typeof(T)) ?? typeof(T);
if (JsConfig <T> .HasDeserializeFn)
{
return(value => JsConfig <T> .ParseFn(Serializer, value));
}
if (type.IsEnum)
{
return(x => Enum.Parse(type, x, true));
}
if (type == typeof(string))
{
return(Serializer.UnescapeString);
}
if (type == typeof(object))
{
return(DeserializeType <TSerializer> .ObjectStringToType);
}
var specialParseFn = ParseUtils.GetSpecialParseMethod(type);
if (specialParseFn != null)
{
return(specialParseFn);
}
if (type.IsEnum)
{
return(x => Enum.Parse(type, x, true));
}
if (type.IsArray)
{
return(DeserializeArray <T, TSerializer> .Parse);
}
var builtInMethod = DeserializeBuiltin <T> .Parse;
if (builtInMethod != null)
{
return(value => builtInMethod(Serializer.UnescapeSafeString(value)));
}
if (type.IsGenericType())
{
if (type.IsOrHasGenericInterfaceTypeOf(typeof(IList <>)))
{
return(DeserializeList <T, TSerializer> .Parse);
}
if (type.IsOrHasGenericInterfaceTypeOf(typeof(IDictionary <,>)))
{
return(DeserializeDictionary <TSerializer> .GetParseMethod(type));
}
if (type.IsOrHasGenericInterfaceTypeOf(typeof(ICollection <>)))
{
return(DeserializeCollection <TSerializer> .GetParseMethod(type));
}
if (type.HasAnyTypeDefinitionsOf(typeof(Queue <>)) ||
type.HasAnyTypeDefinitionsOf(typeof(Stack <>)))
{
return(DeserializeSpecializedCollections <T, TSerializer> .Parse);
}
if (type.IsOrHasGenericInterfaceTypeOf(typeof(IEnumerable <>)))
{
return(DeserializeEnumerable <T, TSerializer> .Parse);
}
}
#if NET40
if (typeof(T).IsAssignableFrom(typeof(System.Dynamic.IDynamicMetaObjectProvider)) ||
typeof(T).HasInterface(typeof(System.Dynamic.IDynamicMetaObjectProvider)))
{
return(DeserializeDynamic <TSerializer> .Parse);
}
#endif
var isDictionary = typeof(T).IsAssignableFrom(typeof(IDictionary)) ||
typeof(T).HasInterface(typeof(IDictionary));
if (isDictionary)
{
return(DeserializeDictionary <TSerializer> .GetParseMethod(type));
}
var isEnumerable = typeof(T).IsAssignableFrom(typeof(IEnumerable)) ||
typeof(T).HasInterface(typeof(IEnumerable));
if (isEnumerable)
{
var parseFn = DeserializeSpecializedCollections <T, TSerializer> .Parse;
if (parseFn != null)
{
return(parseFn);
}
}
if (type.IsValueType)
{
var staticParseMethod = StaticParseMethod <T> .Parse;
if (staticParseMethod != null)
{
return(value => staticParseMethod(Serializer.UnescapeSafeString(value)));
}
}
else
{
var staticParseMethod = StaticParseRefTypeMethod <TSerializer, T> .Parse;
if (staticParseMethod != null)
{
return(value => staticParseMethod(Serializer.UnescapeSafeString(value)));
}
}
var typeConstructor = DeserializeType <TSerializer> .GetParseMethod(TypeConfig <T> .GetState());
if (typeConstructor != null)
{
return(typeConstructor);
}
var stringConstructor = DeserializeTypeUtils.GetParseMethod(type);
if (stringConstructor != null)
{
return(stringConstructor);
}
return(DeserializeType <TSerializer> .ParseAbstractType <T>);
}
public static IDictionary <TKey, TValue> ParseDictionary <TKey, TValue>(
string value, Type createMapType,
ParseStringDelegate parseKeyFn, ParseStringDelegate parseValueFn)
{
if (value == null)
{
return(null);
}
var tryToParseItemsAsDictionaries =
JsConfig.ConvertObjectTypesIntoStringDictionary && typeof(TValue) == typeof(object);
var tryToParseItemsAsPrimitiveTypes =
JsConfig.TryToParsePrimitiveTypeValues && typeof(TValue) == typeof(object);
var index = VerifyAndGetStartIndex(value, createMapType);
var to = (createMapType == null)
? new Dictionary <TKey, TValue>()
: (IDictionary <TKey, TValue>)createMapType.CreateInstance();
if (JsonTypeSerializer.IsEmptyMap(value))
{
return(to);
}
var valueLength = value.Length;
while (index < valueLength)
{
var keyValue = Serializer.EatMapKey(value, ref index);
Serializer.EatMapKeySeperator(value, ref index);
var elementStartIndex = index;
var elementValue = Serializer.EatTypeValue(value, ref index);
var mapKey = (TKey)parseKeyFn(keyValue);
if (tryToParseItemsAsDictionaries)
{
Serializer.EatWhitespace(value, ref elementStartIndex);
if (elementStartIndex < valueLength && value[elementStartIndex] == JsWriter.MapStartChar)
{
var tmpMap = ParseDictionary <TKey, TValue>(elementValue, createMapType, parseKeyFn, parseValueFn);
if (tmpMap != null && tmpMap.Count > 0)
{
to[mapKey] = (TValue)tmpMap;
}
}
else if (elementStartIndex < valueLength && value[elementStartIndex] == JsWriter.ListStartChar)
{
to[mapKey] = (TValue)DeserializeList <List <object>, TSerializer> .Parse(elementValue);
}
else
{
to[mapKey] = (TValue)(tryToParseItemsAsPrimitiveTypes && elementStartIndex < valueLength
? DeserializeType <TSerializer> .ParsePrimitive(elementValue, value[elementStartIndex])
: parseValueFn(elementValue));
}
}
else
{
if (tryToParseItemsAsPrimitiveTypes && elementStartIndex < valueLength)
{
Serializer.EatWhitespace(value, ref elementStartIndex);
to[mapKey] = (TValue)DeserializeType <TSerializer> .ParsePrimitive(elementValue, value[elementStartIndex]);
}
else
{
to[mapKey] = (TValue)parseValueFn(elementValue);
}
}
Serializer.EatItemSeperatorOrMapEndChar(value, ref index);
}
return(to);
}
