From acd7a29c02e222e27d474fe3b64b1ca11b3506c0 Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Wed, 18 Dec 2019 22:32:16 +0300
Subject: Add utf8() predicate

---
 libbutl/utility.ixx | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

(limited to 'libbutl/utility.ixx')

diff --git a/libbutl/utility.ixx b/libbutl/utility.ixx
index d8a5ee8..aabaef6 100644
--- a/libbutl/utility.ixx
+++ b/libbutl/utility.ixx
@@ -217,6 +217,34 @@ namespace butl
     return sanitize_identifier (std::string (s));
   }
 
+  inline codepoint_types
+  operator&= (codepoint_types& x, codepoint_types y)
+  {
+    return x = static_cast<codepoint_types> (
+      static_cast<std::uint16_t> (x) &
+      static_cast<std::uint16_t> (y));
+  }
+
+  inline codepoint_types
+  operator|= (codepoint_types& x, codepoint_types y)
+  {
+    return x = static_cast<codepoint_types> (
+      static_cast<std::uint16_t> (x) |
+      static_cast<std::uint16_t> (y));
+  }
+
+  inline codepoint_types
+  operator& (codepoint_types x, codepoint_types y)
+  {
+    return x &= y;
+  }
+
+  inline codepoint_types
+  operator| (codepoint_types x, codepoint_types y)
+  {
+    return x |= y;
+  }
+
   inline bool
   eof (std::istream& is)
   {
-- 
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