From bdeefb48bf4d590e5e7860e4c8ee48cce01e6183 Mon Sep 17 00:00:00 2001
From: Daniel Larimer <dlarimer@invictus-innovations.com>
Date: Mon, 24 Mar 2014 11:46:23 -0400
Subject: [PATCH] adding std::map<> conversions to/from variant

---
 include/fc/variant.hpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/fc/variant.hpp b/include/fc/variant.hpp
index bb36a0d..7cb8890 100644
--- a/include/fc/variant.hpp
+++ b/include/fc/variant.hpp
@@ -6,6 +6,7 @@
 #include <string.h> // memset
 #include <unordered_set>
 #include <unordered_map>
+#include <map>
 #include <set>
 
 namespace fc
@@ -47,6 +48,10 @@ namespace fc
    void to_variant( const std::unordered_map<K,T>& var,  variant& vo );
    template<typename K, typename T>
    void from_variant( const variant& var,  std::unordered_map<K,T>& vo );
+   template<typename K, typename T>
+   void to_variant( const std::map<K,T>& var,  variant& vo );
+   template<typename K, typename T>
+   void from_variant( const variant& var,  std::map<K,T>& vo );
 
    template<typename T>
    void to_variant( const std::unordered_set<T>& var,  variant& vo );
@@ -314,6 +319,23 @@ namespace fc
          vo.insert( itr->as< std::pair<K,T> >() );
 
    }
+   template<typename K, typename T>
+   void to_variant( const std::map<K, T>& var,  variant& vo )
+   {
+       std::vector< variant > vars(var.size());
+       size_t i = 0;
+       for( auto itr = var.begin(); itr != var.end(); ++itr, ++i )
+          vars[i] = fc::variant(*itr);
+       vo = vars;
+   }
+   template<typename K, typename T>
+   void from_variant( const variant& var,  std::map<K, T>& vo )
+   {
+      const variants& vars = var.get_array();
+      vo.clear();
+      for( auto itr = vars.begin(); itr != vars.end(); ++itr )
+         vo.insert( itr->as< std::pair<K,T> >() );
+   }
 
 
    template<typename T>