/// <summary>
/// Map the input of the decoder.
/// </summary>
public static Decoder <TRaw2, T> Contramap <TRaw1, T, TRaw2>(
this Decoder <TRaw1, T> decoder,
[NotNull] Func <TRaw2, TRaw1> f)
{
return(decoder.Dimap(f, x => x));
}
/// <summary>
/// Project the elements of the tuple in the result to the
/// arguments of the given function.
/// </summary>
public static Decoder <TRaw, T> Construct <TRaw, T1, T2, T>(
this Decoder <TRaw, Pair <T1, T2> > decoder,
[NotNull] Func <T1, T2, T> f)
{
return(decoder.Map(t => f(t._1, t._2)));
}
/// <summary>
/// Map the output of the decoder.
/// </summary>
public static Decoder <TRaw, T2> Map <TRaw, T1, T2>(
this Decoder <TRaw, T1> decoder,
[NotNull] Func <T1, T2> f)
{
return(decoder.Dimap <TRaw, T1, TRaw, T2>(x => x, f));
}
/// <summary>
/// Create a Decoder that will select the first succesful result, or
/// the last failure.
/// </summary>
public static Decoder <TRaw, T> Or <TRaw, T>(
this Decoder <TRaw, T> decoder1,
Decoder <TRaw, T> decoder2)
{
return(new Decoder <TRaw, T>((id, x) => decoder1.Run(id, x) || decoder2.Run(id, x)));
}
