not-python/build.rs

use cfgrammar::yacc::YaccKind;
use lrlex::LexerBuilder;
use lrpar::CTParserBuilder;
use rerun_except::rerun_except;

fn main() -> Result<(), Box<dyn std::error::Error>> {
    // Skip rerunning if it's just *.not files that have changed
    rerun_except(&["*.not"]).unwrap();

    // Build parser + lexer
    let mut parser_builder = CTParserBuilder::new()
        .yacckind(YaccKind::Grmtools)
        .error_on_conflicts(false);
    let lex_rule_ids_map = parser_builder
        .process_file_in_src("syn/parser.y")?;
    if let Some((grm, _, _, conflicts)) = parser_builder.conflicts() {
        eprintln!("{}", conflicts.pp(grm));
        return Err("conflicts in parser".into());
    }
    LexerBuilder::new()
        .rule_ids_map(lex_rule_ids_map)
        .process_file_in_src("syn/lexer.l")?;
    Ok(())
}