serialization: add std::set and std::unordered_set serialization

1 files changed, 127 insertions, 0 deletions

diff --git a/src/serialization/set.h b/src/serialization/set.h
new file mode 100644
index 000000000..54b4eb3ab
--- /dev/null
+++ b/src/serialization/set.h
@@ -0,0 +1,127 @@
+// Copyright (c) 2014-2017, The Monero Project
+// 
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without modification, are
+// permitted provided that the following conditions are met:
+// 
+// 1. Redistributions of source code must retain the above copyright notice, this list of
+//    conditions and the following disclaimer.
+// 
+// 2. Redistributions in binary form must reproduce the above copyright notice, this list
+//    of conditions and the following disclaimer in the documentation and/or other
+//    materials provided with the distribution.
+// 
+// 3. Neither the name of the copyright holder nor the names of its contributors may be
+//    used to endorse or promote products derived from this software without specific
+//    prior written permission.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
+// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
+// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
+// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+// 
+// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
+
+#pragma once
+
+#include "serialization.h"
+
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<false> &ar, std::set<T> &v);
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<true> &ar, std::set<T> &v);
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<false> &ar, std::unordered_set<T> &v);
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<true> &ar, std::unordered_set<T> &v);
+
+namespace serialization
+{
+  namespace detail
+  {
+    template <typename Archive, class T>
+    bool serialize_set_element(Archive& ar, T& e)
+    {
+      return ::do_serialize(ar, e);
+    }
+
+    template <typename Archive>
+    bool serialize_set_element(Archive& ar, uint32_t& e)
+    {
+      ar.serialize_varint(e);
+      return true;
+    }
+
+    template <typename Archive>
+    bool serialize_set_element(Archive& ar, uint64_t& e)
+    {
+      ar.serialize_varint(e);
+      return true;
+    }
+  }
+}
+
+template <template <bool> class Archive, class T>
+bool do_serialize_set(Archive<false> &ar, T &v)
+{
+  size_t cnt;
+  ar.begin_array(cnt);
+  if (!ar.stream().good())
+    return false;
+  v.clear();
+
+  // very basic sanity check
+  if (ar.remaining_bytes() < cnt) {
+    ar.stream().setstate(std::ios::failbit);
+    return false;
+  }
+
+  for (size_t i = 0; i < cnt; i++) {
+    if (i > 0)
+      ar.delimit_array();
+    typename T::key_type k;
+    if (!::serialization::detail::serialize_set_element(ar, k))
+      return false;
+    v.insert(std::move(k));
+    if (!ar.stream().good())
+      return false;
+  }
+  ar.end_array();
+  return true;
+}
+
+template <template <bool> class Archive, class T>
+bool do_serialize_set(Archive<true> &ar, T &v)
+{
+  size_t cnt = v.size();
+  ar.begin_array(cnt);
+  bool first = true;
+  for (const typename T::key_type &k: v) {
+    if (!ar.stream().good())
+      return false;
+    if (!first)
+      ar.delimit_array();
+    if(!::serialization::detail::serialize_set_element(ar, const_cast<typename T::key_type&>(k)))
+      return false;
+    if (!ar.stream().good())
+      return false;
+    first = false;
+  }
+  ar.end_array();
+  return true;
+}
+
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<false> &ar, std::set<T> &v) { return do_serialize_set(ar, v); }
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<true> &ar, std::set<T> &v) { return do_serialize_set(ar, v); }
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<false> &ar, std::unordered_set<T> &v) { return do_serialize_set(ar, v); }
+template <template <bool> class Archive, class T>
+bool do_serialize(Archive<true> &ar, std::unordered_set<T> &v) { return do_serialize_set(ar, v); }