// file      : build/token -*- C++ -*-
// copyright : Copyright (c) 2014-2015 Code Synthesis Tools CC
// license   : MIT; see accompanying LICENSE file

#ifndef BUILD_TOKEN
#define BUILD_TOKEN

#include <string>
#include <cstddef> // size_t
#include <cstdint> // uint64_t
#include <cassert>
#include <utility> // move

namespace build
{
  enum class token_type {eos, name, punctuation};
  enum class token_punctuation {newline, colon, lcbrace, rcbrace};

  class token
  {
  public:
    token_type
    type () const {return t_;}

    std::string const&
    name () const {assert (t_ == token_type::name); return n_;}

    token_punctuation
    punctuation () const {assert (t_ == token_type::punctuation); return p_;}

    bool
    is (token_punctuation p) const
    {
      return t_ == token_type::punctuation && p_ == p;
    }

    std::uint64_t line () const {return l_;}
    std::uint64_t column () const {return c_;}

  public:
    token (std::uint64_t l, std::uint64_t c)
        : t_ (token_type::eos), l_ (l), c_ (c) {}

    token (std::string n, std::uint64_t l, std::uint64_t c)
        : t_ (token_type::name), n_ (std::move (n)), l_ (l), c_ (c) {}

    token (token_punctuation p, std::uint64_t l, std::uint64_t c)
        : t_ (token_type::punctuation), p_ (p), l_ (l), c_ (c) {}

  private:
    token_type t_;

    token_punctuation p_;
    std::string n_;

    std::uint64_t l_;
    std::uint64_t c_;
  };
}

#endif // BUILD_TOKEN