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
|
#pragma once
#include <functional>
#include <sstream>
#ifdef __cpp_lib_source_location
#include <source_location>
#endif
namespace OpenVic {
#ifndef __cpp_lib_source_location
#include <string>
// Implementation of std::source_location for compilers that do not support it
// Note: uses non-standard extensions that are supported by Clang, GCC, and MSVC
// https://clang.llvm.org/docs/LanguageExtensions.html#source-location-builtins
// https://stackoverflow.com/a/67970107
class source_location {
std::string _file;
int _line;
std::string _function;
public:
source_location(std::string f, int l, std::string n) : _file(f), _line(l), _function(n) {}
static source_location current(std::string f = __builtin_FILE(), int l = __builtin_LINE(), std::string n = __builtin_FUNCTION()) {
return source_location(f, l, n);
}
inline char const* file_name() const { return _file.c_str(); }
inline int line() const { return _line; }
inline char const* function_name() const { return _function.c_str(); }
};
#endif
class Logger {
using log_func_t = std::function<void(std::string&&)>;
#ifdef __cpp_lib_source_location
using source_location = std::source_location;
#else
using source_location = OpenVic::source_location;
#endif
static char const* get_filename(char const* filepath);
template<typename... Ts>
struct log {
log(log_func_t log_func, Ts&&... ts, source_location const& location) {
if (log_func) {
std::stringstream stream;
stream << "\n" << get_filename(location.file_name()) << "("
<< location.line() << ") `" << location.function_name() << "`: ";
((stream << std::forward<Ts>(ts)), ...);
stream << std::endl;
log_func(stream.str());
}
}
};
#define LOG_FUNC(name) \
private: \
static log_func_t name##_func; \
public: \
static void set_##name##_func(log_func_t log_func) { \
name##_func = log_func; \
} \
template <typename... Ts> \
struct name { \
name(Ts&&... ts, source_location const& location = source_location::current()) { \
log<Ts...>{ name##_func, std::forward<Ts>(ts)..., location }; \
} \
}; \
template <typename... Ts> \
name(Ts&&...) -> name<Ts...>;
LOG_FUNC(info)
LOG_FUNC(error)
#undef LOG_FUNC
};
}
|
zaaarf