From dc65f9612e9feea1732572e8188d900495349059 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 18 Jun 2015 12:25:02 +0200
Subject: Move prefix-map from build2 to libbutl

---
 butl/prefix-map.txx | 39 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)
 create mode 100644 butl/prefix-map.txx

(limited to 'butl/prefix-map.txx')

diff --git a/butl/prefix-map.txx b/butl/prefix-map.txx
new file mode 100644
index 0000000..9ead579
--- /dev/null
+++ b/butl/prefix-map.txx
@@ -0,0 +1,39 @@
+// file      : butl/prefix-map.txx -*- C++ -*-
+// copyright : Copyright (c) 2014-2015 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+namespace butl
+{
+  template <typename M>
+  auto prefix_map_common<M>::
+  find_prefix (const key_type& k) -> std::pair<iterator, iterator>
+  {
+    std::pair<iterator, iterator> r;
+    r.first = this->lower_bound (k);
+
+    for (r.second = r.first; r.second != this->end (); ++r.second)
+    {
+      if (!this->key_comp ().prefix (k, r.second->first))
+        break;
+    }
+
+    return r;
+  }
+
+  template <typename M>
+  auto prefix_map_common<M>::
+  find_prefix (const key_type& k) const ->
+    std::pair<const_iterator, const_iterator>
+  {
+    std::pair<const_iterator, const_iterator> r;
+    r.first = this->lower_bound (k);
+
+    for (r.second = r.first; r.second != this->end (); ++r.second)
+    {
+      if (!this->key_comp ().prefix (k, r.second->first))
+        break;
+    }
+
+    return r;
+  }
+}
-- 
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