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#ifndef LLMR_PLATFORM_LOG
#define LLMR_PLATFORM_LOG
#include "event.hpp"
#include <memory>
#include <string>
namespace llmr {
class LogBackend {
public:
virtual inline ~LogBackend() = default;
virtual void record(EventSeverity severity, Event event, const std::string &msg) = 0;
virtual void record(EventSeverity severity, Event event, const char* format, ...) = 0;
virtual void record(EventSeverity severity, Event event, int64_t code) = 0;
virtual void record(EventSeverity severity, Event event, int64_t code, const std::string &msg) = 0;
};
class Log {
private:
template <typename T>
constexpr static bool includes(const T e, T const *l, const size_t i = 0) {
return i >= sizeof l ? false : *(l + i) == e ? true : includes(e, l, i + 1);
}
public:
template <typename ...Args>
static inline void Debug(Event event, Args&& ...args) {
Record(EventSeverity::Debug, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static inline void Info(Event event, Args&& ...args) {
Record(EventSeverity::Info, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static inline void Warning(Event event, Args&& ...args) {
Record(EventSeverity::Warning, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static inline void Error(Event event, Args&& ...args) {
Record(EventSeverity::Error, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static inline void Record(EventSeverity severity, Event event, Args&& ...args) {
if (!includes(severity, disabledEventSeverities) &&
!includes(event, disabledEvents) &&
!includes({ severity, event }, disabledEventPermutations)) {
if (Backend) {
Backend->record(severity, event, ::std::forward<Args>(args)...);
}
}
}
template<typename T, typename ...Args>
static inline const T &Set(Args&& ...args) {
Backend = ::std::unique_ptr<T>(new T(::std::forward<Args>(args)...));
return *dynamic_cast<T *>(Backend.get());
}
private:
static std::unique_ptr<LogBackend> Backend;
};
}
#endif
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