Merge pull request #191 from AntelopeIO/larryk85/basic_string_fix

add explicit overloads

libraries/eosiolib/core/eosio/datastream.hpp

@@ -766,7 +766,7 @@ datastream<Stream>& operator >> ( datastream<Stream>& ds, std::vector<T>& v ) {
 }
 
 /**
- * Serialize a basic_string
+ * Serialize a basic_string<T>
  *
  * @param ds - The stream to write
  * @param s - The value to serialize
@@ -783,7 +783,7 @@ datastream<Stream>& operator << ( datastream<Stream>& ds, const std::basic_strin
 }
 
 /**
- * Deserialize a basic_string
+ * Deserialize a basic_string<T>
  *
  * @param ds - The stream to read
  * @param s - The destination for deserialized value
@@ -800,6 +800,42 @@ datastream<Stream>& operator >> ( datastream<Stream>& ds, std::basic_string<T>&
  return ds;
 }
 
+/**
+ * Serialize a basic_string<uint8_t>
+ *
+ * @param ds - The stream to write
+ * @param s - The value to serialize
+ * @tparam Stream - Type of datastream buffer
+ * @tparam T - Type of the object contained in the basic_string
+ * @return datastream<Stream>& - Reference to the datastream
+ */
+template<typename Stream>
+datastream<Stream>& operator << ( datastream<Stream>& ds, const std::basic_string<uint8_t>& s ) {
+ ds << unsigned_int(s.size());
+ if (s.size())
+ ds.write(s.data(), s.size());
+ return ds;
+}
+
+/**
+ * Deserialize a basic_string<uint8_t>
+ *
+ * @param ds - The stream to read
+ * @param s - The destination for deserialized value
+ * @tparam Stream - Type of datastream buffer
+ * @tparam T - Type of the object contained in the basic_string
+ * @return datastream<Stream>& - Reference to the datastream
+ */
+template<typename Stream>
+datastream<Stream>& operator >> ( datastream<Stream>& ds, std::basic_string<uint8_t>& s ) {
+ unsigned_int v;
+ ds >> v;
+ s.resize(v.value);
+ ds.read(s.data(), s.size());
+ return ds;
+}
+
+
 /**
  * Serialize a set
  *