nearly.js grammar

grammar.ne

@{%
const moo = require("moo");

const lexer = moo.compile({
  ws: / +/,
  label: /"[\w\d ]+?"/,
  not: '!',
  and: '&&',
  or: '||',
  lparen: '(',
  rparen: ')',
});
%}


@lexer lexer

main -> binary
parentheses -> %lparen binary %rparen | %label
unary -> %not parentheses
       | parentheses
binary -> binary %ws %and %ws unary
        | binary %ws %or %ws unary
        | unary
ws -> %ws {% x => null %}