Logging.h

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#ifndef LOGGING_H_3B1A3A0F
#define LOGGING_H_3B1A3A0F

#include "uscxml/config.h"
#include "uscxml/Common.h"

#include "uscxml/messages/Data.h"
#include "uscxml/messages/Event.h"

#include <memory>

#define LOG(logger, lvl) logger.log(lvl)
#define LOG2(logger, lvl, thing) logger.log(lvl, thing)
#define LOGD(lvl) uscxml::Logger::getDefault().log(lvl)
#define LOGD2(lvl, thing) uscxml::Logger::getDefault().log(lvl, thing);

namespace uscxml {

enum LogSeverity {
    USCXML_SCXML,
    USCXML_TRACE,
    USCXML_DEBUG,
    USCXML_INFO,
    USCXML_WARN,
    USCXML_ERROR,
    USCXML_FATAL
};

class LoggerImpl;

void log(LogSeverity severity, const Event& event);
void log(LogSeverity severity, const Data& data);

class StreamLogger {
public:
    std::ostream& operator<<(const std::string& message);
    ~StreamLogger();

protected:
    StreamLogger(LogSeverity severity, std::shared_ptr<LoggerImpl> logger) : _severity(severity), _logger(logger) {}
    StreamLogger(const StreamLogger& other) : _severity(other._severity), _logger(other._logger) {}

    LogSeverity _severity;
    std::shared_ptr<LoggerImpl> _logger;
    std::stringstream ss;

    friend class Logger;
};

class USCXML_API Logger {
public:
    PIMPL_OPERATORS(Logger);

    virtual void log(LogSeverity severity, const Event& event);
    virtual void log(LogSeverity severity, const Data& data);
    virtual void log(LogSeverity severity, const std::string& message);

    virtual StreamLogger log(LogSeverity severity);
    static std::string severityToString(LogSeverity severity);

    static Logger getDefault();

    std::shared_ptr<LoggerImpl> getImpl() const;
protected:
    std::shared_ptr<LoggerImpl> _impl;

};

}

#endif /* end of include guard: LOGGING_H_3B1A3A0F */