forked from bblanchon/ArduinoJson
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathStdStream.hpp
More file actions
59 lines (48 loc) · 1.37 KB
/
Copy pathStdStream.hpp
File metadata and controls
59 lines (48 loc) · 1.37 KB
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
// Copyright Benoit Blanchon 2014-2017
// MIT License
//
// Arduino JSON library
// https://github.com/bblanchon/ArduinoJson
// If you like this project, please add a star!
#pragma once
#include <istream>
#include "../TypeTraits/EnableIf.hpp"
#include "../TypeTraits/IsBaseOf.hpp"
#include "../TypeTraits/RemoveReference.hpp"
namespace ArduinoJson {
namespace Internals {
struct StdStreamTraits {
class Reader {
std::istream& _stream;
char _current, _next;
public:
Reader(std::istream& stream) : _stream(stream), _current(0), _next(0) {}
void move() {
_current = _next;
_next = 0;
}
char current() {
if (!_current) _current = read();
return _current;
}
char next() {
// assumes that current() has been called
if (!_next) _next = read();
return _next;
}
private:
Reader& operator=(const Reader&); // Visual Studio C4512
char read() {
return _stream.eof() ? '\0' : static_cast<char>(_stream.get());
}
};
};
template <typename TStream>
struct StringTraits<TStream,
// match any type that is derived from std::istream:
typename TypeTraits::EnableIf<TypeTraits::IsBaseOf<
std::istream, typename TypeTraits::RemoveReference<
TStream>::type>::value>::type>
: StdStreamTraits {};
}
}