public static Delegate?From(Type type)
{
// bool
// byte
// dto
// decimal
// double
// float
// int
// long
// sbyte
// short
// timespan
// uint
// ulong
// ushort
if (type == typeof(Guid))
{
return(_toGuid ?? (_toGuid = ToGuid));
}
if (type == typeof(Guid?))
{
return(_toGuidNull ?? (_toGuidNull = (ReadOnlySpan <byte> value) => (Guid?)ToGuid(value)));
}
if (type == typeof(TimeSpan))
{
return(_toTimeSpan ?? (_toTimeSpan = ToTimeSpan));
}
if (type == typeof(TimeSpan?))
{
return(_toTimeSpanNull ?? (_toTimeSpanNull = (ReadOnlySpan <byte> value) => (TimeSpan?)ToTimeSpan(value)));
}
return(null);
}
/// <summary>
/// Defines a conversion from a byte sequence to a member value.
/// </summary>
/// <param name="propertyOrField"></param>
/// <param name="fromBytes">Deserializes a value from a source ReadOnlySpan<byte></param>
public Builder With <TField>(
Expression <Func <TResult, TField> > propertyOrField,
FromSpan <byte, TField> fromBytes)
{
propertyOrField.ThrowIfNull(nameof(propertyOrField));
fromBytes.ThrowIfNull(nameof(fromBytes));
GetOrAdd(propertyOrField).FromBlob = fromBytes;
return(this);
}
/// <summary>
/// Defines a conversion from a UTF-16 string to a member value.
/// </summary>
/// <param name="propertyOrField"></param>
/// <param name="fromText">Deserializes a value from a source ReadOnlySpan<char></param>
public Builder With <TField>(
Expression <Func <TResult, TField> > propertyOrField,
FromSpan <char, TField> fromText)
{
propertyOrField.ThrowIfNull(nameof(propertyOrField));
fromText.ThrowIfNull(nameof(fromText));
GetOrAdd(propertyOrField).FromUtf16Text = fromText;
return(this);
}
public static Delegate?From(Type type)
{
if (type == typeof(string))
{
return(_toString ??
(_toString = (ReadOnlySpan <char> text) => text.ToString()));
}
if (type == typeof(ReadOnlyMemory <char>))
{
return(_toStringMemory ??
(_toStringMemory = (ReadOnlySpan <char> text) => text.ToString().AsMemory()));
}
return(null);
}
public ValueAssigner(
string?fieldName,
FieldSetter <TResult, TField> setter,
Func <long, TField>?convertInteger,
Func <double, TField>?convertFloat,
FromSpan <char, TField>?convertTextUtf16,
FromSpan <byte, TField>?convertTextUtf8,
FromSpan <byte, TField>?convertBlob,
Func <TField>?convertNull)
{
_fieldName = fieldName;
_setter = setter;
_convertInteger = convertInteger;
_convertFloat = convertFloat;
_convertTextUtf16 = convertTextUtf16;
_convertTextUtf8 = convertTextUtf8;
_convertBlob = convertBlob;
_convertNull = convertNull;
}
/// <summary>
/// Defines a conversion from a byte sequence.
/// </summary>
/// <param name="fromBytes">Deserializes a value from a source ReadOnlySpan<byte></param>
public ScalarBuilder With(FromSpan <byte, TResult> fromBytes)
{
fromBytes.ThrowIfNull(nameof(fromBytes));
_builder.FromBlob = fromBytes;
return(this);
}
/// <summary>
/// Defines a conversion from a UTF-16 string.
/// </summary>
/// <param name="fromText">Deserializes a value from a source ReadOnlySpan<char></param>
public ScalarBuilder With(FromSpan <char, TResult> fromText)
{
fromText.ThrowIfNull(nameof(fromText));
_builder.FromUtf16Text = fromText;
return(this);
}
