support for API of the form logger.info() << ..

include/spdlog/details/logger_impl.h

@@ -63,10 +63,11 @@ inline void spdlog::logger::set_pattern(const std::string& pattern)
     _set_pattern(pattern);
 }
 
-
-
+//
+// cppformat API of the form logger.info("hello {} {}", "world", 1);
+//
 template <typename... Args>
-inline spdlog::details::line_logger spdlog::logger::log(level::level_enum lvl, const std::string& fmt, const Args&... args)
+inline spdlog::details::line_logger spdlog::logger::_log(level::level_enum lvl, const std::string& fmt, const Args&... args)
 {
     bool msg_enabled = should_log(lvl);
     details::line_logger l(this, lvl, msg_enabled);
@@ -88,63 +89,131 @@ inline spdlog::details::line_logger spdlog::logger::log(level::level_enum lvl, c
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::log(const std::string& fmt, const Args&... args)
 {
-    return log(level::ALWAYS, fmt, args...);
+    return _log(level::ALWAYS, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::trace(const std::string& fmt, const Args&... args)
 {
-    return log(level::TRACE, fmt, args...);
+    return _log(level::TRACE, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::debug(const std::string& fmt, const Args&... args)
 {
-    return log(level::DEBUG, fmt, args...);
+    return _log(level::DEBUG, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::info(const std::string& fmt, const Args&... args)
 {
-    return log(level::INFO, fmt, args...);
+    return _log(level::INFO, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::notice(const std::string& fmt, const Args&... args)
 {
-    return log(level::NOTICE, fmt, args...);
+    return _log(level::NOTICE, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::warn(const std::string& fmt, const Args&... args)
 {
-    return log(level::WARN, fmt, args...);
+    return _log(level::WARN, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::error(const std::string& fmt, const Args&... args)
 {
-    return log(level::ERR, fmt, args...);
+    return _log(level::ERR, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::critical(const std::string& fmt, const Args&... args)
 {
-    return log(level::CRITICAL, fmt, args...);
+    return _log(level::CRITICAL, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::alert(const std::string& fmt, const Args&... args)
 {
-    return log(level::ALERT, fmt, args...);
+    return _log(level::ALERT, fmt, args...);
 }
 
 template <typename... Args>
 inline spdlog::details::line_logger spdlog::logger::emerg(const std::string& fmt, const Args&... args)
 {
-    return log(level::EMERG, fmt, args...);
+    return _log(level::EMERG, fmt, args...);
+}
+
+
+//
+// //API to support logger.info() << ".." calls
+//
+
+
+inline spdlog::details::line_logger spdlog::logger::_log(level::level_enum lvl)
+{
+    bool msg_enabled = should_log(lvl);
+    details::line_logger l(this, lvl, msg_enabled);
+    return l;
+}
+
+inline spdlog::details::line_logger spdlog::logger::log()
+{
+    return _log(level::ALWAYS);
+}
+
+inline spdlog::details::line_logger spdlog::logger::trace()
+{
+    return _log(level::TRACE);
+}
+
+
+inline spdlog::details::line_logger spdlog::logger::debug()
+{
+    return _log(level::DEBUG);
 }
 
+inline spdlog::details::line_logger spdlog::logger::info()
+{
+    return _log(level::INFO);
+}
+
+inline spdlog::details::line_logger spdlog::logger::notice()
+{
+    return _log(level::NOTICE);
+}
+
+inline spdlog::details::line_logger spdlog::logger::warn()
+{
+    return _log(level::WARN);
+}
+
+inline spdlog::details::line_logger spdlog::logger::error()
+{
+    return _log(level::ERR);
+}
+
+inline spdlog::details::line_logger spdlog::logger::critical()
+{
+    return _log(level::CRITICAL);
+}
+
+inline spdlog::details::line_logger spdlog::logger::alert()
+{
+    return _log(level::ALERT);
+}
+
+inline spdlog::details::line_logger spdlog::logger::emerg()
+{
+    return _log(level::EMERG);
+}
+
+
+
+//
+
 inline const std::string& spdlog::logger::name() const
 {
     return _name;

include/spdlog/logger.h

@@ -65,7 +65,6 @@ public:
     //Stop logging
     void stop();
 
-    template <typename... Args> details::line_logger log(level::level_enum lvl, const std::string& fmt, const Args&... args);
     template <typename... Args> details::line_logger log(const std::string& fmt, const Args&... args);
     template <typename... Args> details::line_logger trace(const std::string& fmt, const Args&... args);
     template <typename... Args> details::line_logger debug(const std::string& fmt, const Args&... args);
@@ -77,16 +76,31 @@ public:
     template <typename... Args> details::line_logger alert(const std::string& fmt, const Args&... args);
     template <typename... Args> details::line_logger emerg(const std::string& fmt, const Args&... args);
 
+    //API to support logger.info() << ".." calls
+
+    details::line_logger log();
+    details::line_logger trace();
+    details::line_logger debug();
+    details::line_logger info();
+    details::line_logger notice();
+    details::line_logger warn();
+    details::line_logger error();
+    details::line_logger critical();
+    details::line_logger alert();
+    details::line_logger emerg();
+
 
     void set_pattern(const std::string&);
     void set_formatter(formatter_ptr);
 
 
 protected:
-    virtual void _log_msg(details::log_msg& msg);
+    virtual void _log_msg(details::log_msg&);
     virtual void _set_pattern(const std::string&);
     virtual void _set_formatter(formatter_ptr);
     virtual void _stop();
+    details::line_logger _log(level::level_enum lvl);
+    template <typename... Args> details::line_logger _log(level::level_enum lvl, const std::string& fmt, const Args&... args);
 
 
     friend details::line_logger;