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 <mbgl/util/event.hpp>
#include <mbgl/util/noncopyable.hpp>
#include <memory>
#include <string>
namespace mbgl {
class Log {
public:
class Observer : private util::noncopyable {
public:
virtual ~Observer() = default;
// When an observer is set, this function will be called for every log
// message. Returning true will consume the message.
virtual bool onRecord(EventSeverity severity, Event event, int64_t code, const std::string &msg) = 0;
};
class NullObserver : public Observer {
bool onRecord(EventSeverity, Event, int64_t, const std::string&) override {
return true;
}
};
static void setObserver(std::unique_ptr<Observer> Observer);
static std::unique_ptr<Observer> removeObserver();
private:
template <typename T, size_t N>
constexpr static bool includes(const T e, const T (&l)[N], const size_t i = 0) {
return i < N && (l[i] == e || includes(e, l, i + 1));
}
public:
template <typename ...Args>
static void Debug(Event event, Args&& ...args) {
Record(EventSeverity::Debug, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static void Info(Event event, Args&& ...args) {
Record(EventSeverity::Info, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static void Warning(Event event, Args&& ...args) {
Record(EventSeverity::Warning, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static void Error(Event event, Args&& ...args) {
Record(EventSeverity::Error, event, ::std::forward<Args>(args)...);
}
template <typename ...Args>
static void Record(EventSeverity severity, Event event, Args&& ...args) {
if (!includes(severity, disabledEventSeverities) &&
!includes(event, disabledEvents) &&
!includes({ severity, event }, disabledEventPermutations)) {
record(severity, event, ::std::forward<Args>(args)...);
}
}
private:
static void record(EventSeverity severity, Event event, const std::string &msg);
static void record(EventSeverity severity, Event event, const char* format, ...);
static void record(EventSeverity severity, Event event, int64_t code);
static void record(EventSeverity severity, Event event, int64_t code, const std::string &msg);
// This method is the data sink that must be implemented by each platform we
// support. It should ideally output the error message in a human readable
// format to the developer.
static void platformRecord(EventSeverity severity, const std::string &msg);
};
} // namespace mbgl
|
