internal static ConstantNode ParseConstantNode(Token token)
{
switch (token.TokenType)
{
case TokenType.Base64Binary:
byte[] binaryValue = Convert.FromBase64String(token.Value);
return(ConstantNode.Binary(token.Value, binaryValue));
case TokenType.Date:
if (DateTime.TryParseExact(token.Value, ParserSettings.ODataDateFormat, ParserSettings.CultureInfo, DateTimeStyles.AssumeLocal, out DateTime dateTimeValue))
{
return(ConstantNode.Date(token.Value, dateTimeValue));
}
throw ODataException.BadRequest(ExceptionMessage.UnableToParseDate, "$filter");
case TokenType.DateTimeOffset:
if (DateTimeOffset.TryParse(token.Value, ParserSettings.CultureInfo, ParserSettings.DateTimeStyles, out DateTimeOffset dateTimeOffsetValue))
{
return(ConstantNode.DateTimeOffset(token.Value, dateTimeOffsetValue));
}
throw ODataException.BadRequest(ExceptionMessage.UnableToParseDateTimeOffset, "$filter");
case TokenType.Decimal:
string decimalText = token.Value.EndsWith("m", StringComparison.OrdinalIgnoreCase)
? token.Value.Substring(0, token.Value.Length - 1)
: token.Value;
decimal decimalValue = decimal.Parse(decimalText, ParserSettings.CultureInfo);
return(ConstantNode.Decimal(token.Value, decimalValue));
case TokenType.Double:
return(ParseDouble(token));
case TokenType.Duration:
string durationText = token.Value.Substring(9, token.Value.Length - 10)
.Replace("P", string.Empty)
.Replace("DT", ".")
.Replace("H", ":")
.Replace("M", ":")
.Replace("S", string.Empty);
var durationTimeSpanValue = TimeSpan.Parse(durationText, ParserSettings.CultureInfo);
return(ConstantNode.Duration(token.Value, durationTimeSpanValue));
case TokenType.EdmType:
EdmType edmType = EdmType.GetEdmType(token.Value);
return(ConstantNode.EdmTypeNode(token.Value, edmType));
case TokenType.Enum:
int firstQuote = token.Value.IndexOf('\'');
string edmEnumTypeName = token.Value.Substring(0, firstQuote);
EdmEnumType edmEnumType = (EdmEnumType)EdmType.GetEdmType(edmEnumTypeName);
string edmEnumMemberName = token.Value.Substring(firstQuote + 1, token.Value.Length - firstQuote - 2);
object enumValue = edmEnumType.GetClrValue(edmEnumMemberName);
Type constantNodeType = typeof(ConstantNode <>).MakeGenericType(edmEnumType.ClrType);
return((ConstantNode)Activator.CreateInstance(constantNodeType, BindingFlags.Instance | BindingFlags.NonPublic, null, new[] { edmEnumType, token.Value, enumValue }, null));
case TokenType.False:
return(ConstantNode.False);
case TokenType.Guid:
var guidValue = Guid.ParseExact(token.Value, "D");
return(ConstantNode.Guid(token.Value, guidValue));
case TokenType.Integer:
return(ParseInteger(token));
case TokenType.Null:
return(ConstantNode.Null);
case TokenType.Single:
string singleText = token.Value.Substring(0, token.Value.Length - 1);
float singleValue = float.Parse(singleText, ParserSettings.CultureInfo);
return(ConstantNode.Single(token.Value, singleValue));
case TokenType.String:
string stringText = token.Value.Trim('\'').Replace("''", "'");
return(ConstantNode.String(token.Value, stringText));
case TokenType.TimeOfDay:
var timeSpanTimeOfDayValue = TimeSpan.Parse(token.Value, ParserSettings.CultureInfo);
return(ConstantNode.Time(token.Value, timeSpanTimeOfDayValue));
case TokenType.True:
return(ConstantNode.True);
default:
throw new NotSupportedException(token.TokenType.ToString());
}
}