/rust-macro-regular-grammar

Primary LanguageRust

Macro By Example with a Pike VM for Rust

The idea is that every macro definition also defines a regular language.

Example

matches!(
    ($enum:ident: $T:ty
        $($variant:ident $(= $value:expr)*)+
    )

    Flags: uint
        A = 1
        B = 2
        C = 3
)
// => true

TODO

  • capture nonterminals.
  • count sequence repetitons.
  • write macro_rules!