private static ParseStringDelegate GetParseFn()
{
var nullableType = Nullable.GetUnderlyingType(typeof(T));
if (nullableType == null)
{
var typeCode = typeof(T).GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
//Lots of kids like to use '1', HTML checkboxes use 'on' as a soft convention
return(value =>
value.Length == 1 ?
value == "1"
: value.Length == 2 ?
value == "on" :
bool.Parse(value));
case TypeCode.Byte:
return(value => byte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.SByte:
return(value => sbyte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int16:
return(value => short.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt16:
return(value => ushort.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int32:
return(value => int.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt32:
return(value => uint.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int64:
return(value => long.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt64:
return(value => ulong.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Single:
return(value => float.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Double:
return(value => double.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Decimal:
return(value => decimal.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value));
case TypeCode.Char:
return(value =>
{
char cValue;
return char.TryParse(value, out cValue) ? cValue : '\0';
});
}
if (typeof(T) == typeof(Guid))
{
return(value => new Guid(value));
}
if (typeof(T) == typeof(DateTimeOffset))
{
return(value => DateTimeSerializer.ParseDateTimeOffset(value));
}
if (typeof(T) == typeof(TimeSpan))
{
return(value => DateTimeSerializer.ParseTimeSpan(value));
}
}
else
{
var typeCode = nullableType.GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
return(value => string.IsNullOrEmpty(value) ?
(bool?)null
: value.Length == 1 ?
value == "1"
: value.Length == 2 ?
value == "on" :
bool.Parse(value));
case TypeCode.Byte:
return(value => string.IsNullOrEmpty(value) ? (byte?)null : byte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.SByte:
return(value => string.IsNullOrEmpty(value) ? (sbyte?)null : sbyte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int16:
return(value => string.IsNullOrEmpty(value) ? (short?)null : short.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt16:
return(value => string.IsNullOrEmpty(value) ? (ushort?)null : ushort.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int32:
return(value => string.IsNullOrEmpty(value) ? (int?)null : int.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt32:
return(value => string.IsNullOrEmpty(value) ? (uint?)null : uint.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int64:
return(value => string.IsNullOrEmpty(value) ? (long?)null : long.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt64:
return(value => string.IsNullOrEmpty(value) ? (ulong?)null : ulong.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Single:
return(value => string.IsNullOrEmpty(value) ? (float?)null : float.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Double:
return(value => string.IsNullOrEmpty(value) ? (double?)null : double.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Decimal:
return(value => string.IsNullOrEmpty(value) ? (decimal?)null : decimal.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestNullableXsdDateTime(value));
case TypeCode.Char:
return(value =>
{
char cValue;
return string.IsNullOrEmpty(value) ? (char?)null : char.TryParse(value, out cValue) ? cValue : '\0';
});
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => DateTimeSerializer.ParseNullableTimeSpan(value));
}
if (typeof(T) == typeof(Guid?))
{
return(value => string.IsNullOrEmpty(value) ? (Guid?)null : new Guid(value));
}
if (typeof(T) == typeof(DateTimeOffset?))
{
return(value => DateTimeSerializer.ParseNullableDateTimeOffset(value));
}
}
return(null);
}
private static ParseStringDelegate GetParseFn()
{
//Note the generic typeof(T) is faster than using var type = typeof(T)
if (typeof(T) == typeof(bool))
{
return(value => bool.Parse(value));
}
if (typeof(T) == typeof(byte))
{
return(value => byte.Parse(value));
}
if (typeof(T) == typeof(sbyte))
{
return(value => sbyte.Parse(value));
}
if (typeof(T) == typeof(short))
{
return(value => short.Parse(value));
}
if (typeof(T) == typeof(int))
{
return(value => int.Parse(value));
}
if (typeof(T) == typeof(long))
{
return(value => long.Parse(value));
}
if (typeof(T) == typeof(float))
{
return(value => float.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(double))
{
return(value => double.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(decimal))
{
return(value => decimal.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(Guid))
{
return(value => new Guid(value));
}
if (typeof(T) == typeof(DateTime?))
{
return(value => DateTimeSerializer.ParseShortestNullableXsdDateTime(value));
}
if (typeof(T) == typeof(DateTime) || typeof(T) == typeof(DateTime?))
{
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value));
}
if (typeof(T) == typeof(DateTimeOffset) || typeof(T) == typeof(DateTimeOffset?))
{
return(value => DateTimeSerializer.ParseDateTimeOffset(value));
}
if (typeof(T) == typeof(TimeSpan))
{
return(value => DateTimeSerializer.ParseTimeSpan(value));
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => DateTimeSerializer.ParseNullableTimeSpan(value));
}
#if !MONOTOUCH && !SILVERLIGHT && !XBOX
if (typeof(T) == typeof(System.Data.Linq.Binary))
{
return(value => new System.Data.Linq.Binary(Convert.FromBase64String(value)));
}
#endif
if (typeof(T) == typeof(char))
{
char cValue;
return(value => char.TryParse(value, out cValue) ? cValue : '\0');
}
if (typeof(T) == typeof(ushort))
{
return(value => ushort.Parse(value));
}
if (typeof(T) == typeof(uint))
{
return(value => uint.Parse(value));
}
if (typeof(T) == typeof(ulong))
{
return(value => ulong.Parse(value));
}
if (typeof(T) == typeof(bool?))
{
return(value => value == null ? (bool?)null : bool.Parse(value));
}
if (typeof(T) == typeof(byte?))
{
return(value => value == null ? (byte?)null : byte.Parse(value));
}
if (typeof(T) == typeof(sbyte?))
{
return(value => value == null ? (sbyte?)null : sbyte.Parse(value));
}
if (typeof(T) == typeof(short?))
{
return(value => value == null ? (short?)null : short.Parse(value));
}
if (typeof(T) == typeof(int?))
{
return(value => value == null ? (int?)null : int.Parse(value));
}
if (typeof(T) == typeof(long?))
{
return(value => value == null ? (long?)null : long.Parse(value));
}
if (typeof(T) == typeof(float?))
{
return(value => value == null ? (float?)null : float.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(double?))
{
return(value => value == null ? (double?)null : double.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(decimal?))
{
return(value => value == null ? (decimal?)null : decimal.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => value == null ? (TimeSpan?)null : TimeSpan.Parse(value));
}
if (typeof(T) == typeof(Guid?))
{
return(value => value == null ? (Guid?)null : new Guid(value));
}
if (typeof(T) == typeof(ushort?))
{
return(value => value == null ? (ushort?)null : ushort.Parse(value));
}
if (typeof(T) == typeof(uint?))
{
return(value => value == null ? (uint?)null : uint.Parse(value));
}
if (typeof(T) == typeof(ulong?))
{
return(value => value == null ? (ulong?)null : ulong.Parse(value));
}
if (typeof(T) == typeof(char?))
{
char cValue;
return(value => value == null ? (char?)null : char.TryParse(value, out cValue) ? cValue : '\0');
}
return(null);
}
private static ParseStringSpanDelegate GetParseStringSpanFn()
{
var nullableType = Nullable.GetUnderlyingType(typeof(T));
if (nullableType == null)
{
var typeCode = typeof(T).GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
return(value => value.ParseBoolean());
case TypeCode.SByte:
return(SignedInteger <sbyte> .ParseObject);
case TypeCode.Byte:
return(UnsignedInteger <byte> .ParseObject);
case TypeCode.Int16:
return(SignedInteger <short> .ParseObject);
case TypeCode.UInt16:
return(UnsignedInteger <ushort> .ParseObject);
case TypeCode.Int32:
return(SignedInteger <int> .ParseObject);
case TypeCode.UInt32:
return(UnsignedInteger <uint> .ParseObject);
case TypeCode.Int64:
return(SignedInteger <long> .ParseObject);
case TypeCode.UInt64:
return(UnsignedInteger <ulong> .ParseObject);
case TypeCode.Single:
return(value => MemoryProvider.Instance.ParseFloat(value));
case TypeCode.Double:
return(value => MemoryProvider.Instance.ParseDouble(value));
case TypeCode.Decimal:
return(value => MemoryProvider.Instance.ParseDecimal(value));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value.ToString()));
case TypeCode.Char:
return(value => value.Length == 0 ? (char)0 : value.Length == 1 ? value[0] : JsonTypeSerializer.Unescape(value)[0]);
}
if (typeof(T) == typeof(Guid))
{
return(value => value.ParseGuid());
}
if (typeof(T) == typeof(DateTimeOffset))
{
return(value => DateTimeSerializer.ParseDateTimeOffset(value.ToString()));
}
if (typeof(T) == typeof(TimeSpan))
{
return(value => DateTimeSerializer.ParseTimeSpan(value.ToString()));
}
#if NET6_0
if (typeof(T) == typeof(DateOnly))
{
return(value => DateOnly.FromDateTime(DateTimeSerializer.ParseShortestXsdDateTime(value.ToString())));
}
if (typeof(T) == typeof(TimeOnly))
{
return(value => TimeOnly.FromTimeSpan(DateTimeSerializer.ParseTimeSpan(value.ToString())));
}
#endif
}
else
{
var typeCode = nullableType.GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
return(value => value.IsNullOrEmpty()
? (bool?)null
: value.ParseBoolean());
case TypeCode.SByte:
return(SignedInteger <sbyte> .ParseNullableObject);
case TypeCode.Byte:
return(UnsignedInteger <byte> .ParseNullableObject);
case TypeCode.Int16:
return(SignedInteger <short> .ParseNullableObject);
case TypeCode.UInt16:
return(UnsignedInteger <ushort> .ParseNullableObject);
case TypeCode.Int32:
return(SignedInteger <int> .ParseNullableObject);
case TypeCode.UInt32:
return(UnsignedInteger <uint> .ParseNullableObject);
case TypeCode.Int64:
return(SignedInteger <long> .ParseNullableObject);
case TypeCode.UInt64:
return(UnsignedInteger <ulong> .ParseNullableObject);
case TypeCode.Single:
return(value => value.IsNullOrEmpty() ? (float?)null : value.ParseFloat());
case TypeCode.Double:
return(value => value.IsNullOrEmpty() ? (double?)null : value.ParseDouble());
case TypeCode.Decimal:
return(value => value.IsNullOrEmpty() ? (decimal?)null : value.ParseDecimal());
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestNullableXsdDateTime(value.ToString()));
case TypeCode.Char:
return(value => value.IsEmpty ? (char?)null : value.Length == 1 ? value[0] : JsonTypeSerializer.Unescape(value)[0]);
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => DateTimeSerializer.ParseNullableTimeSpan(value.ToString()));
}
if (typeof(T) == typeof(Guid?))
{
return(value => value.IsNullOrEmpty() ? (Guid?)null : value.ParseGuid());
}
if (typeof(T) == typeof(DateTimeOffset?))
{
return(value => DateTimeSerializer.ParseNullableDateTimeOffset(value.ToString()));
}
#if NET6_0
if (typeof(T) == typeof(DateOnly?))
{
return(value => value.IsNullOrEmpty() ? default : DateOnly.FromDateTime(DateTimeSerializer.ParseShortestXsdDateTime(value.ToString())));
}
if (typeof(T) == typeof(TimeOnly?))
{
return(value => value.IsNullOrEmpty() ? default : TimeOnly.FromTimeSpan(DateTimeSerializer.ParseTimeSpan(value.ToString())));
}
#endif
}
return(null);
}
private static ParseStringDelegate GetParseFn()
{
var nullableType = Nullable.GetUnderlyingType(typeof(T));
if (nullableType == null)
{
#if NETFX_CORE
var typeCode = ReflectionExtensions.GetTypeCode(typeof(T));
#else
var typeCode = Type.GetTypeCode(typeof(T));
#endif
switch (typeCode)
{
case TypeCode.Boolean:
return(value => value.Length == 1 ? value == "1" : bool.Parse(value));
case TypeCode.Byte:
return(value => byte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.SByte:
return(value => sbyte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int16:
return(value => short.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt16:
return(value => ushort.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int32:
return(value => int.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt32:
return(value => uint.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int64:
return(value => long.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt64:
return(value => ulong.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Single:
return(value => float.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Double:
return(value => double.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Decimal:
return(value => decimal.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value));
case TypeCode.Char:
char cValue;
return(value => char.TryParse(value, out cValue) ? cValue : '\0');
}
if (typeof(T) == typeof(Guid))
{
return(value => new Guid(value));
}
if (typeof(T) == typeof(DateTimeOffset))
{
return(value => DateTimeSerializer.ParseDateTimeOffset(value));
}
if (typeof(T) == typeof(TimeSpan))
{
return(value => DateTimeSerializer.ParseTimeSpan(value));
}
#if !MONOTOUCH && !SILVERLIGHT && !XBOX && !ANDROID
if (typeof(T) == typeof(System.Data.Linq.Binary))
{
return(value => new System.Data.Linq.Binary(Convert.FromBase64String(value)));
}
#endif
}
else
{
#if NETFX_CORE
var typeCode = ReflectionExtensions.GetTypeCode(nullableType);
#else
var typeCode = Type.GetTypeCode(nullableType);
#endif
switch (typeCode)
{
case TypeCode.Boolean:
return(value => string.IsNullOrEmpty(value) ? (bool?)null : value.Length == 1 ? value == "1" : bool.Parse(value));
case TypeCode.Byte:
return(value => string.IsNullOrEmpty(value) ? (byte?)null : byte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.SByte:
return(value => string.IsNullOrEmpty(value) ? (sbyte?)null : sbyte.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int16:
return(value => string.IsNullOrEmpty(value) ? (short?)null : short.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt16:
return(value => string.IsNullOrEmpty(value) ? (ushort?)null : ushort.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int32:
return(value => string.IsNullOrEmpty(value) ? (int?)null : int.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt32:
return(value => string.IsNullOrEmpty(value) ? (uint?)null : uint.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Int64:
return(value => string.IsNullOrEmpty(value) ? (long?)null : long.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.UInt64:
return(value => string.IsNullOrEmpty(value) ? (ulong?)null : ulong.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Single:
return(value => string.IsNullOrEmpty(value) ? (float?)null : float.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Double:
return(value => string.IsNullOrEmpty(value) ? (double?)null : double.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.Decimal:
return(value => string.IsNullOrEmpty(value) ? (decimal?)null : decimal.Parse(value, CultureInfo.InvariantCulture));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestNullableXsdDateTime(value));
case TypeCode.Char:
char cValue;
return(value => string.IsNullOrEmpty(value) ? (char?)null : char.TryParse(value, out cValue) ? cValue : '\0');
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => DateTimeSerializer.ParseNullableTimeSpan(value));
}
if (typeof(T) == typeof(Guid?))
{
return(value => string.IsNullOrEmpty(value) ? (Guid?)null : new Guid(value));
}
if (typeof(T) == typeof(DateTimeOffset?))
{
return(value => DateTimeSerializer.ParseNullableDateTimeOffset(value));
}
}
return(null);
}
private static ParseStringDelegate GetParseFn()
{
//Note the generic typeof(T) is faster than using var type = typeof(T)
if (typeof(T) == typeof(bool) || typeof(T) == typeof(bool?))
{
return(value => bool.Parse(value));
}
if (typeof(T) == typeof(byte) || typeof(T) == typeof(byte?))
{
return(value => byte.Parse(value));
}
if (typeof(T) == typeof(sbyte) || typeof(T) == typeof(sbyte?))
{
return(value => sbyte.Parse(value));
}
if (typeof(T) == typeof(short) || typeof(T) == typeof(short?))
{
return(value => short.Parse(value));
}
if (typeof(T) == typeof(int) || typeof(T) == typeof(int?))
{
return(value => int.Parse(value));
}
if (typeof(T) == typeof(long) || typeof(T) == typeof(long?))
{
return(value => long.Parse(value));
}
if (typeof(T) == typeof(float) || typeof(T) == typeof(float?))
{
return(value => float.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(double) || typeof(T) == typeof(double?))
{
return(value => double.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(decimal) || typeof(T) == typeof(decimal?))
{
return(value => decimal.Parse(value, CultureInfo.InvariantCulture));
}
if (typeof(T) == typeof(Guid) || typeof(T) == typeof(Guid?))
{
return(value => new Guid(value));
}
if (typeof(T) == typeof(DateTime) || typeof(T) == typeof(DateTime?))
{
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value));
}
if (typeof(T) == typeof(TimeSpan) || typeof(T) == typeof(TimeSpan?))
{
return(value => TimeSpan.Parse(value));
}
if (typeof(T) == typeof(char) || typeof(T) == typeof(char?))
{
char cValue;
return(value => char.TryParse(value, out cValue) ? cValue : '\0');
}
if (typeof(T) == typeof(ushort) || typeof(T) == typeof(ushort?))
{
return(value => ushort.Parse(value));
}
if (typeof(T) == typeof(uint) || typeof(T) == typeof(uint?))
{
return(value => uint.Parse(value));
}
if (typeof(T) == typeof(ulong) || typeof(T) == typeof(ulong?))
{
return(value => ulong.Parse(value));
}
return(null);
}
private static ParseStringSegmentDelegate GetParseStringSegmentFn()
{
var nullableType = Nullable.GetUnderlyingType(typeof(T));
if (nullableType == null)
{
var typeCode = typeof(T).GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
// Lots of kids like to use '1', HTML checkboxes use 'on' as a soft convention
return(value =>
value.Length == 1 ?
value.Equals("1")
: value.Length == 2 ?
value.Equals("on") :
value.ParseBoolean());
case TypeCode.Byte:
return(value => value.ParseByte());
case TypeCode.SByte:
return(value => value.ParseSByte());
case TypeCode.Int16:
return(value => value.ParseInt16());
case TypeCode.UInt16:
return(value => value.ParseUInt16());
case TypeCode.Int32:
return(value => value.ParseInt32());
case TypeCode.UInt32:
return(value => value.ParseUInt32());
case TypeCode.Int64:
return(value => value.ParseInt64());
case TypeCode.UInt64:
return(value => value.ParseUInt64());
case TypeCode.Single:
return(value => float.Parse(value.Value, CultureInfo.InvariantCulture));
case TypeCode.Double:
return(value => double.Parse(value.Value, CultureInfo.InvariantCulture));
case TypeCode.Decimal:
return(value => value.ParseDecimal(allowThousands: true));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value.Value));
case TypeCode.Char:
return(value =>
{
return char.TryParse(value.Value, out var cValue) ? cValue : '\0';
});
}
if (typeof(T) == typeof(Guid))
{
return(value => value.ParseGuid());
}
if (typeof(T) == typeof(DateTimeOffset))
{
return(value => DateTimeSerializer.ParseDateTimeOffset(value.Value));
}
if (typeof(T) == typeof(TimeSpan))
{
return(value => DateTimeSerializer.ParseTimeSpan(value.Value));
}
}
else
{
var typeCode = nullableType.GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
return(value => value.IsNullOrEmpty() ?
(bool?)null
: value.Length == 1 ?
value.Equals("1")
: value.Length == 2 ?
value.Equals("on") :
value.ParseBoolean());
case TypeCode.Byte:
return(value => value.IsNullOrEmpty() ? (byte?)null : value.ParseByte());
case TypeCode.SByte:
return(value => value.IsNullOrEmpty() ? (sbyte?)null : value.ParseSByte());
case TypeCode.Int16:
return(value => value.IsNullOrEmpty() ? (short?)null : value.ParseInt16());
case TypeCode.UInt16:
return(value => value.IsNullOrEmpty() ? (ushort?)null : value.ParseUInt16());
case TypeCode.Int32:
return(value => value.IsNullOrEmpty() ? (int?)null : value.ParseInt32());
case TypeCode.UInt32:
return(value => value.IsNullOrEmpty() ? (uint?)null : value.ParseUInt32());
case TypeCode.Int64:
return(value => value.IsNullOrEmpty() ? (long?)null : value.ParseInt64());
case TypeCode.UInt64:
return(value => value.IsNullOrEmpty() ? (ulong?)null : value.ParseUInt64());
case TypeCode.Single:
return(value => value.IsNullOrEmpty() ? (float?)null : float.Parse(value.Value, CultureInfo.InvariantCulture));
case TypeCode.Double:
return(value => value.IsNullOrEmpty() ? (double?)null : double.Parse(value.Value, CultureInfo.InvariantCulture));
case TypeCode.Decimal:
return(value => value.IsNullOrEmpty() ? (decimal?)null : value.ParseDecimal(allowThousands: true));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestNullableXsdDateTime(value.Value));
case TypeCode.Char:
return(value =>
{
return value.IsNullOrEmpty() ? (char?)null : char.TryParse(value.Value, out var cValue) ? cValue : '\0';
});
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => DateTimeSerializer.ParseNullableTimeSpan(value.Value));
}
if (typeof(T) == typeof(Guid?))
{
return(value => value.IsNullOrEmpty() ? (Guid?)null : value.ParseGuid());
}
if (typeof(T) == typeof(DateTimeOffset?))
{
return(value => DateTimeSerializer.ParseNullableDateTimeOffset(value.Value));
}
}
return(null);
}
private static ParseStringSpanDelegate GetParseStringSpanFn()
{
var nullableType = Nullable.GetUnderlyingType(typeof(T));
if (nullableType == null)
{
var typeCode = typeof(T).GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
//Lots of kids like to use '1', HTML checkboxes use 'on' as a soft convention
return(value =>
value.Length == 1 ?
value[0] == '1'
: value.Length == 2 ?
value[0] == 'o' && value[1] == 'n' :
value.ParseBoolean());
case TypeCode.SByte:
return(SignedInteger <sbyte> .ParseObject);
case TypeCode.Byte:
return(UnsignedInteger <byte> .ParseObject);
case TypeCode.Int16:
return(SignedInteger <short> .ParseObject);
case TypeCode.UInt16:
return(UnsignedInteger <ushort> .ParseObject);
case TypeCode.Int32:
return(SignedInteger <int> .ParseObject);
case TypeCode.UInt32:
return(UnsignedInteger <uint> .ParseObject);
case TypeCode.Int64:
return(SignedInteger <long> .ParseObject);
case TypeCode.UInt64:
return(UnsignedInteger <ulong> .ParseObject);
case TypeCode.Single:
return(value => MemoryProvider.Instance.ParseFloat(value));
case TypeCode.Double:
return(value => MemoryProvider.Instance.ParseDouble(value));
case TypeCode.Decimal:
return(value => MemoryProvider.Instance.ParseDecimal(value));
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestXsdDateTime(value.ToString()));
case TypeCode.Char:
return(value => value[0]);
}
if (typeof(T) == typeof(Guid))
{
return(value => value.ParseGuid());
}
if (typeof(T) == typeof(DateTimeOffset))
{
return(value => DateTimeSerializer.ParseDateTimeOffset(value.ToString()));
}
if (typeof(T) == typeof(TimeSpan))
{
return(value => DateTimeSerializer.ParseTimeSpan(value.ToString()));
}
}
else
{
var typeCode = nullableType.GetTypeCode();
switch (typeCode)
{
case TypeCode.Boolean:
return(value => value.IsNullOrEmpty() ?
(bool?)null
: value.Length == 1 ?
value[0] == '1'
: value.Length == 2 ?
value[0] == 'o' && value[1] == 'n' :
value.ParseBoolean());
case TypeCode.SByte:
return(SignedInteger <sbyte> .ParseNullableObject);
case TypeCode.Byte:
return(UnsignedInteger <byte> .ParseNullableObject);
case TypeCode.Int16:
return(SignedInteger <short> .ParseNullableObject);
case TypeCode.UInt16:
return(UnsignedInteger <ushort> .ParseNullableObject);
case TypeCode.Int32:
return(SignedInteger <int> .ParseNullableObject);
case TypeCode.UInt32:
return(UnsignedInteger <uint> .ParseNullableObject);
case TypeCode.Int64:
return(SignedInteger <long> .ParseNullableObject);
case TypeCode.UInt64:
return(UnsignedInteger <ulong> .ParseNullableObject);
case TypeCode.Single:
return(value => value.IsNullOrEmpty() ? (float?)null : value.ParseFloat());
case TypeCode.Double:
return(value => value.IsNullOrEmpty() ? (double?)null : value.ParseDouble());
case TypeCode.Decimal:
return(value => value.IsNullOrEmpty() ? (decimal?)null : value.ParseDecimal());
case TypeCode.DateTime:
return(value => DateTimeSerializer.ParseShortestNullableXsdDateTime(value.ToString()));
case TypeCode.Char:
return(value => value.IsEmpty ? (char?)null : value[0]);
}
if (typeof(T) == typeof(TimeSpan?))
{
return(value => DateTimeSerializer.ParseNullableTimeSpan(value.ToString()));
}
if (typeof(T) == typeof(Guid?))
{
return(value => value.IsNullOrEmpty() ? (Guid?)null : value.ParseGuid());
}
if (typeof(T) == typeof(DateTimeOffset?))
{
return(value => DateTimeSerializer.ParseNullableDateTimeOffset(value.ToString()));
}
}
return(null);
}
