lr_parser 0.1.2

macros for ruly2
Documentation 
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use proc_macro::*;

mod common;
mod item;
mod rule;
mod token;

mod parser;

#[proc_macro]
pub fn impl_lr_parser(input: TokenStream) -> TokenStream {
    let mut iter = input.into_iter();

    let algorithm = common::get_ident_string(iter.next());

    let start_symbol = common::get_ident_string(iter.next());

    let terminal_symbols = token::get_terminal_symbols(iter.next());

    let (nonterminal_symbols, map_lhs2items) = rule::parse_rule(&start_symbol, iter.next());

    parser::create_parser(
        &algorithm,
        &start_symbol,
        &terminal_symbols,
        &nonterminal_symbols,
        &map_lhs2items,
    )
    .parse()
    .unwrap()
}