/// <summary>
/// Creates a function for the given conversion where neither input and output are an <see cref="Enum"/>.
/// </summary>
/// <param name="input">The <see cref="Type"/> to convert from.</param>
/// <param name="output">The <see cref="Type"/> to convert to.</param>
/// <returns>The function that converts an object of the given <see cref="Type"/> to the specified <see cref="Type"/>.</returns>
protected override Func <object, object> Lookup(Type input, Type output)
{
if (output == typeof(string))
{
return(Conversions.ObjectToString);
}
if (output.IsAssignableFrom(input))
{
return(Conversions.None);
}
Tuple <Type, Type> inout = Tuple.Create(input, output);
if (!LookupCache.TryGetValue(inout, out Func <object, object> converter))
{
converter = (input == typeof(string) ? Conversions.TryParse(output) : null)
?? Conversions.ImplicitCast(input, output)
?? Conversions.ExplicitCast(input, output)
?? Conversions.TypeConverter(input, output);
if (converter != null)
{
LookupCache[inout] = converter;
}
else
{
converter = InvalidConversion;
}
}
return(converter);
}
/// <summary>
/// Creates a function for the given conversion which includes at least one <see cref="Enum"/>.
/// </summary>
/// <param name="input">The <see cref="Type"/> to convert from.</param>
/// <param name="inputTypeCode">The <see cref="TypeCode"/> of <paramref name="input"/>.</param>
/// <param name="output">The <see cref="Type"/> to convert to.</param>
/// <param name="outputTypeCode">The <see cref="TypeCode"/> of <paramref name="output"/>.</param>
protected override Func <object, object> LookupEnum(Type input, TypeCode inputTypeCode, Type output, TypeCode outputTypeCode)
{
if (outputTypeCode == TypeCode.String)
{
return(Conversions.ObjectToString);
}
if (inputTypeCode == TypeCode.String)
{
Tuple <Type, Type> inout = Tuple.Create(input, output);
if (!LookupCache.TryGetValue(inout, out Func <object, object> converter))
{
converter = Conversions.TryParseEnum(output);
LookupCache[inout] = converter;
}
return(converter);
}
return(this[inputTypeCode, outputTypeCode]);
}