1 files changed, 100 insertions, 0 deletions
diff --git a/libbutl/standard-version.ixx b/libbutl/standard-version.ixx
new file mode 100644
index 0000000..5f656fa
--- /dev/null
+++ b/libbutl/standard-version.ixx
@@ -0,0 +1,100 @@
+// file      : libbutl/standard-version.ixx -*- C++ -*-
+// copyright : Copyright (c) 2014-2017 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+namespace butl
+{
+  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 && !stub ();
+  }
+
+  inline bool standard_version::
+  beta () const noexcept
+  {
+    std::uint64_t abe (version % 10000);
+    return abe > 5000 && !stub ();
+  }
+
+  inline bool standard_version::
+  earliest () const noexcept
+  {
+    return version % 10000 == 1 && !snapshot () && !stub ();
+  }
+
+  inline standard_version::flags
+  operator& (standard_version::flags x, standard_version::flags y)
+  {
+    return x &= y;
+  }
+
+  inline standard_version::flags
+  operator| (standard_version::flags x, standard_version::flags y)
+  {
+    return x |= y;
+  }
+
+  inline standard_version::flags
+  operator&= (standard_version::flags& x, standard_version::flags y)
+  {
+    return x = static_cast<standard_version::flags> (
+      static_cast<std::uint16_t> (x) &
+      static_cast<std::uint16_t> (y));
+  }
+
+  inline standard_version::flags
+  operator|= (standard_version::flags& x, standard_version::flags y)
+  {
+    return x = static_cast<standard_version::flags> (
+      static_cast<std::uint16_t> (x) |
+      static_cast<std::uint16_t> (y));
+  }
+}