teleparse 0.1.2

teleparse
Documentation 
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//! Test utilities

use crate::derive_lexicon;

#[derive_lexicon]
pub enum TestTokenType {
    A,
    B,
    C,
    D,
    E,
    F,
    G,
}

#[derive_lexicon]
#[teleparse(
    ignore(r#"\s+"#), // ignore whitespaces, separate multiple with comma
)]
pub enum MathTokenType {
    #[teleparse(regex(r#"[a-zA-Z]+"#), terminal(Ident))]
    Ident,
    #[teleparse(terminal(OpAdd = "+", OpMul = "*",))]
    Op,
    /// Parentheses
    #[teleparse(terminal(ParenOpen = "(", ParenClose = ")"))]
    Paren,

    #[teleparse(regex(r"\d+"), terminal(Integer))]
    Integer,
}

pub mod prelude {
    macro_rules! assert_not_ll1 {
        ($pt:ty, $err:expr) => {
            use $crate::Root;
            let err = if let Err(e) = <$pt as Root>::metadata() {
                e.clone()
            } else {
                panic!("Expected {} to be not LL(1), but it is", stringify!($pt));
            };
            assert_eq!(err, $err);
            assert!(<$pt>::parse("").is_err());
        };
    }
    pub(crate) use assert_not_ll1;
}