1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
|
#pragma once
#include <asl/format.hpp>
#include <asl/utility.hpp>
#include <asl/box.hpp>
namespace asl::log
{
enum level : uint8_t
{
kDebug = 0,
kInfo,
kWarning,
kError,
};
struct message
{
level level;
string_view message;
source_location location;
};
// @Todo Write and use an intrusive doubly-linked list
class Logger
{
Logger* m_next{};
public:
Logger() = default;
ASL_DEFAULT_COPY_MOVE(Logger);
virtual ~Logger() = default;
virtual void log(const message&) = 0;
friend void register_logger(box<Logger>);
constexpr Logger* next_logger() const { return m_next; }
};
class DefaultLoggerBase : public Logger
{
protected:
static void log_inner(Writer&, const message&);
};
template<derefs_as<Writer> W>
class DefaultLogger : public DefaultLoggerBase
{
W m_writer;
public:
explicit constexpr DefaultLogger(W&& writer) : m_writer{ASL_FWD(writer)} {}
constexpr void log(const message& m) override
{
log_inner(deref<Writer>(m_writer), m);
}
};
void register_logger(box<Logger>);
// @Todo Add a way to remove loggers (including all)
template<typename T, typename... Args>
requires constructible_from<T, Args&&...> && convertible_from<Logger*, T*>
void register_logger(Args&&... args)
{
register_logger(make_box<T>(ASL_FWD(args)...));
}
void log_inner(level l, string_view fmt, span<const format_internals::type_erased_arg> args, const source_location& sl);
template<formattable... Args>
void log(level l, const source_location& sl, string_view fmt, const Args&... args)
{
if constexpr (sizeof...(Args) == 0)
{
log_inner(l, fmt, {}, sl);
}
else
{
format_internals::type_erased_arg type_erased_args[] = {
format_internals::type_erased_arg(args)...
};
log_inner(l, fmt, type_erased_args, sl);
}
}
} // namespace asl::log
// @Todo Compile-time configuration of logging
#define ASL_LOG_DEBUG(...) ::asl::log::log(::asl::log::kDebug, ::asl::source_location{}, __VA_ARGS__)
#define ASL_LOG_INFO(...) ::asl::log::log(::asl::log::kInfo, ::asl::source_location{}, __VA_ARGS__)
#define ASL_LOG_WARNING(...) ::asl::log::log(::asl::log::kWarning, ::asl::source_location{}, __VA_ARGS__)
#define ASL_LOG_ERROR(...) ::asl::log::log(::asl::log::kError, ::asl::source_location{}, __VA_ARGS__)
|
