#ifndef MATHEVAL_IMPLEMENTATION
#error "Do not include parser.hpp directly!"
#endif

#pragma once

#include "ast.hpp"

#include <boost/spirit/home/x3.hpp>

namespace mix_cc {

namespace matheval {

namespace x3 = boost::spirit::x3;

namespace parser {

struct expression_class;

using expression_type = x3::rule<expression_class, ast::expression>;

BOOST_SPIRIT_DECLARE(expression_type)

}  // namespace parser

parser::expression_type grammar();

}  // namespace matheval

}  // namespace mix_cc