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extern crate proc_macro;
extern crate proc_macro2;
extern crate quote;
use quote::quote_spanned;
extern crate peg_runtime as peg;
mod analysis;
mod ast;
mod grammar;
mod tokens;
mod translate;
#[proc_macro]
pub fn parser(input: proc_macro::TokenStream) -> proc_macro::TokenStream {
let tokens = tokens::FlatTokenStream::new(input.into());
let grammar = match grammar::peg::peg_grammar(&tokens) {
Ok(g) => g,
Err(err) => {
let msg = format!("expected {}", err.expected);
return quote_spanned!(err.location.0=> compile_error!(#msg);).into();
}
};
translate::compile_grammar(&grammar).into()
}