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// file      : butl/standard-version.ixx -*- C++ -*-
// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
// license   : MIT; see accompanying LICENSE file

namespace butl
{
  inline standard_version::
  standard_version ( std::uint16_t e,
                     std::uint64_t v,
                     const std::string& s,
                     std::uint16_t r,
                     bool allow_earliest)
      : standard_version (v, s, allow_earliest)
  {
    // Can't initialize above due to ctor delegating.
    //
    epoch = e;
    revision = r;
  }

  inline std::uint16_t standard_version::
  major () const noexcept
  {
    std::uint64_t e (version % 10);
    std::uint64_t v (version / 10);
    std::uint64_t ab (v % 1000);
    if (ab != 0 || e == 1)
      v += 1000 - ab;

    return static_cast<std::uint16_t> (v / 1000000000 % 1000);
  }

  inline std::uint16_t standard_version::
  minor () const noexcept
  {
    std::uint64_t e (version % 10);
    std::uint64_t v (version / 10);
    std::uint64_t ab (v % 1000);
    if (ab != 0 || e == 1)
      v += 1000 - ab;

    return static_cast<std::uint16_t> (v / 1000000 % 1000);
  }

  inline std::uint16_t standard_version::
  patch () const noexcept
  {
    std::uint64_t e (version % 10);
    std::uint64_t v (version / 10);
    std::uint64_t ab (v % 1000);
    if (ab != 0 || e == 1)
      v += 1000 - ab;

    return static_cast<std::uint16_t> (v / 1000 % 1000);
  }

  inline std::uint16_t standard_version::
  pre_release () const noexcept
  {
    std::uint64_t ab (version / 10 % 1000);
    if (ab > 500)
      ab -= 500;

    return static_cast<std::uint16_t> (ab);
  }

  inline bool standard_version::
  alpha () const noexcept
  {
    std::uint64_t abe (version % 10000);
    return abe > 0 && abe < 5000;
  }

  inline bool standard_version::
  beta () const noexcept
  {
    std::uint64_t abe (version % 10000);
    return abe > 5000;
  }

  inline bool standard_version::
  earliest () const noexcept
  {
    return version % 10000 == 1 && !snapshot ();
  }
}