Remove serialization/enableable

Currently working on an EPEE [ser/de]ialization library for Rust and at first glance, EPEE seemed to have support for optional wrappers. However, after looking into it, this feature appears to be half-baked and unused. Furthermore, adding support for optional values would be better suited to implement at the storage level, in my opinion. That would make parsing DOMs easier and less error-prone. If anyone is currently using this code, please comment. Thanks!

At the time of writing, this PR has no merge conflicts with #8211

contrib/epee/include/serialization/enableable.h

@@ -1,53 +0,0 @@
-// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
-// All rights reserved.
-// 
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-// * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-// * 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.
-// * Neither the name of the Andrey N. Sabelnikov 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 OWNER  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.
-// 
-
-#pragma once
-
-namespace epee
-{
-
-  template<class t_obj>
-  struct enableable
-  {
-    t_obj v;
-    bool enabled;
-
-    enableable()
-      : v(t_obj()), enabled(true)
-    {	// construct from defaults
-    }
-
-    enableable(const t_obj& _v)
-      : v(_v), enabled(true)
-    {	// construct from specified values
-    }
-
-    enableable(const enableable<t_obj>& _v)
-      : v(_v.v), enabled(_v.enabled)
-    {	// construct from specified values
-    }
-  };
-}

contrib/epee/include/serialization/keyvalue_serialization.h

@@ -30,7 +30,6 @@
 #include <boost/utility/value_init.hpp>
 #include <boost/foreach.hpp>
 #include "misc_log_ex.h"
-#include "enableable.h"
 #include "keyvalue_serialization_overloads.h"
 
 #undef MONERO_DEFAULT_LOG_CATEGORY

contrib/epee/include/serialization/keyvalue_serialization_overloads.h

@@ -81,24 +81,6 @@ namespace epee
       return obj._load(stg, hchild_section);
     }
     //-------------------------------------------------------------------------------------------------------------------
-    template<class serializible_type, class t_storage>
-    static bool serialize_t_obj(enableable<serializible_type>& obj, t_storage& stg, typename t_storage::hsection hparent_section, const char* pname)
-    {
-      if(!obj.enabled)
-        return true;
-      return serialize_t_obj(obj.v, stg, hparent_section, pname);
-    }
-    //-------------------------------------------------------------------------------------------------------------------
-    template<class serializible_type, class t_storage>
-    static bool unserialize_t_obj(enableable<serializible_type>& obj, t_storage& stg, typename t_storage::hsection hparent_section, const char* pname)
-    {
-      obj.enabled = false;
-      typename t_storage::hsection	hchild_section = stg.open_section(pname, hparent_section, false);
-      if(!hchild_section) return false;
-      obj.enabled = true;
-      return obj.v._load(stg, hchild_section);
-    }
-    //-------------------------------------------------------------------------------------------------------------------
     template<class stl_container, class t_storage>
     static bool serialize_stl_container_t_val  (const stl_container& container, t_storage& stg, typename t_storage::hsection hparent_section, const char* pname)
     {