How to use Token.Sequence()

[powerdude]

Hello,

I'm not sure how to use Token.Sequence() like Token.EqualTo(). Can you provide an example? I'm trying to do this:

public static TokenListParser<MyToken, int> MySpecialNumber = Token.Sequence(MyToken.Number, MyToken.Word).Apply(Numerics.IntegerInt32); 

but it fails because the text parser can't take a series of tokens. What is a valid use case for this method or what kind of parser do i have to create to use Apply?

[nblumhardt]

Hi @powerdude -

In this case you probably want something like:

public static TokenListParser<MyToken, int> MySpecialNumber = 
  Token.EqualTo(MyToken.Number).Apply(Numerics.IntegerInt32))
    .Then(n => Token.EqualTo(MyToken.Word).Value(n));

HTH!
Nick

[dhowe]

Still be good to have an example of how this function works...

[nblumhardt]

It's a helper for cases like: Token.Sequence(Token.Yield, Token.Break) 👍