Add support for 'status string' replies from Redis.

src/backends/redis/reply.cpp

@@ -50,6 +50,11 @@ namespace redis {
 		return boost::get<std::vector<Reply>>(parReply);
 	}
 
+	const ErrorString& get_error_string (const Reply& parReply) {
+		assert(RedisVariantType_Error == parReply.which());
+		return boost::get<ErrorString>(parReply);
+	}
+
 	template <>
 	const std::string& get<std::string> (const Reply& parReply) {
 		return get_string(parReply);
@@ -65,7 +70,13 @@ namespace redis {
 		return get_integer(parReply);
 	}
 
+	template <>
+	const ErrorString& get<ErrorString> (const Reply& parReply) {
+		return get_error_string(parReply);
+	}
+
 	template const std::string& get<std::string> ( const Reply& parReply );
 	template const std::vector<Reply>& get<std::vector<Reply>> ( const Reply& parReply );
 	template const long long& get<long long> ( const Reply& parReply );
+	template const ErrorString& get<ErrorString> ( const Reply& parReply );
 } //namespace redis

src/backends/redis/reply.hpp

@@ -32,6 +32,17 @@ namespace redis {
 		{ }
 		const std::string& message ( void ) const noexcept { return m_msg; }
 
+	private:
+		std::string m_msg;
+	};
+	class StatusString {
+	public:
+		StatusString ( const char* parCStr, std::size_t parLen ) :
+			m_msg(parCStr, parLen)
+		{ }
+		const std::string& message ( void ) const noexcept { return m_msg; }
+		bool is_ok ( void ) const { return "OK" == m_msg; }
+
 	private:
 		std::string m_msg;
 	};
@@ -41,14 +52,16 @@ namespace redis {
 			long long,
 			std::string,
 			std::vector<Reply>,
-			ErrorString
+			ErrorString,
+			StatusString
 		>;
 	} //namespace implem
 	enum RedisVariantTypes {
 		RedisVariantType_Integer = 0,
 		RedisVariantType_String,
 		RedisVariantType_Array,
-		RedisVariantType_Error
+		RedisVariantType_Error,
+		RedisVariantType_Status
 	};
 
 	struct Reply : implem::RedisVariantType {
@@ -59,6 +72,7 @@ namespace redis {
 		Reply ( std::string&& parVal ) : base_class(std::move(parVal)) {}
 		Reply ( std::vector<Reply>&& parVal ) : base_class(std::move(parVal)) {}
 		Reply ( ErrorString&& parVal ) : base_class(std::move(parVal)) {}
+		Reply ( StatusString&& parVal ) : base_class(std::move(parVal)) {}
 		~Reply ( void ) noexcept = default;
 	};
 
@@ -66,6 +80,7 @@ namespace redis {
 	long long get_integer_autoconv_if_str ( const Reply& parReply );
 	const std::string& get_string ( const Reply& parReply );
 	const std::vector<Reply>& get_array ( const Reply& parReply );
+	const ErrorString& get_error_string ( const Reply& parReply );
 
 	template <typename T>
 	const T& get ( const Reply& parReply );