internal static object StringToType(ReadOnlySpan <char> strType,
TypeConfig typeConfig,
EmptyCtorDelegate ctorFn,
KeyValuePair <string, TypeAccessor>[] typeAccessors)
{
var index = 0;
var type = typeConfig.Type;
if (strType.IsEmpty)
{
return(null);
}
var buffer = strType;
var strTypeLength = strType.Length;
//if (!Serializer.EatMapStartChar(strType, ref index))
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
if (buffer[index] != JsWriter.MapStartChar)
{
throw DeserializeTypeRef.CreateSerializationError(type, strType.ToString());
}
index++;
if (JsonTypeSerializer.IsEmptyMap(strType, index))
{
return(ctorFn());
}
var config = JsConfig.GetConfig();
object instance = null;
var lenient = config.PropertyConvention == PropertyConvention.Lenient;
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
while (index < strTypeLength)
{
var propertyName = JsonTypeSerializer.UnescapeJsString(strType, JsonUtils.QuoteChar, removeQuotes: true, ref index);
//Serializer.EatMapKeySeperator(strType, ref index);
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
if (strTypeLength != index)
{
index++;
}
var propertyValueStr = Serializer.EatValue(strType, ref index);
var possibleTypeInfo = propertyValueStr != null && propertyValueStr.Length > 1;
//if we already have an instance don't check type info, because then we will have a half deserialized object
//we could throw here or just use the existing instance.
if (instance == null && possibleTypeInfo && propertyName.Equals(typeAttr.Span, StringComparison.OrdinalIgnoreCase))
{
var explicitTypeName = Serializer.ParseString(propertyValueStr);
var explicitType = config.TypeFinder(explicitTypeName);
if (explicitType == null || explicitType.IsInterface || explicitType.IsAbstract)
{
Tracer.Instance.WriteWarning("Could not find type: " + propertyValueStr.ToString());
}
else if (!type.IsAssignableFrom(explicitType))
{
Tracer.Instance.WriteWarning("Could not assign type: " + propertyValueStr.ToString());
}
else
{
JsWriter.AssertAllowedRuntimeType(explicitType);
instance = explicitType.CreateInstance();
}
if (instance != null)
{
//If __type info doesn't match, ignore it.
if (!type.IsInstanceOfType(instance))
{
instance = null;
}
else
{
var derivedType = instance.GetType();
if (derivedType != type)
{
var map = DeserializeTypeRef.GetCachedTypeAccessors(derivedType, Serializer);
if (map != null)
{
typeAccessors = map;
}
}
}
}
Serializer.EatItemSeperatorOrMapEndChar(strType, ref index);
continue;
}
if (instance == null)
{
instance = ctorFn();
}
var typeAccessor = typeAccessors.Get(propertyName, lenient);
var propType = possibleTypeInfo && propertyValueStr[0] == '_' ? TypeAccessor.ExtractType(Serializer, propertyValueStr) : null;
if (propType != null)
{
try
{
if (typeAccessor != null)
{
//var parseFn = Serializer.GetParseFn(propType);
var parseFn = JsonReader.GetParseStringSpanFn(propType);
var propertyValue = parseFn(propertyValueStr);
if (typeConfig.OnDeserializing != null)
{
propertyValue = typeConfig.OnDeserializing(instance, propertyName.ToString(), propertyValue);
}
typeAccessor.SetProperty(instance, propertyValue);
}
//Serializer.EatItemSeperatorOrMapEndChar(strType, ref index);
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
if (index != strTypeLength)
{
var success = buffer[index] == JsWriter.ItemSeperator || buffer[index] == JsWriter.MapEndChar;
index++;
if (success)
{
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
}
}
continue;
}
catch (Exception e)
{
config.OnDeserializationError?.Invoke(instance, propType, propertyName.ToString(), propertyValueStr.ToString(), e);
if (config.ThrowOnError)
{
throw DeserializeTypeRef.GetSerializationException(propertyName.ToString(), propertyValueStr.ToString(), propType, e);
}
else
{
Tracer.Instance.WriteWarning("WARN: failed to set dynamic property {0} with: {1}", propertyName.ToString(), propertyValueStr.ToString());
}
}
}
if (typeAccessor?.GetProperty != null && typeAccessor.SetProperty != null)
{
try
{
var propertyValue = typeAccessor.GetProperty(propertyValueStr);
if (typeConfig.OnDeserializing != null)
{
propertyValue = typeConfig.OnDeserializing(instance, propertyName.ToString(), propertyValue);
}
typeAccessor.SetProperty(instance, propertyValue);
}
catch (NotSupportedException) { throw; }
catch (Exception e)
{
config.OnDeserializationError?.Invoke(instance, propType ?? typeAccessor.PropertyType, propertyName.ToString(), propertyValueStr.ToString(), e);
if (config.ThrowOnError)
{
throw DeserializeTypeRef.GetSerializationException(propertyName.ToString(), propertyValueStr.ToString(), typeAccessor.PropertyType, e);
}
else
{
Tracer.Instance.WriteWarning("WARN: failed to set property {0} with: {1}", propertyName.ToString(), propertyValueStr.ToString());
}
}
}
else
{
// the property is not known by the DTO
typeConfig.OnDeserializing?.Invoke(instance, propertyName.ToString(), propertyValueStr.ToString());
}
//Serializer.EatItemSeperatorOrMapEndChar(strType, ref index);
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
if (index != strType.Length)
{
var success = buffer[index] == JsWriter.ItemSeperator || buffer[index] == JsWriter.MapEndChar;
index++;
if (success)
{
for (; index < strTypeLength; index++)
{
if (!JsonUtils.IsWhiteSpace(buffer[index]))
{
break;
}
} //Whitespace inline
}
}
}
return(instance);
}