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// ArduinoJson - arduinojson.org
// Copyright Benoit Blanchon 2014-2018
// MIT License
#pragma once
#if ARDUINOJSON_ENABLE_STD_STREAM
#include <istream>
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());
}
};
static const bool has_append = false;
static const bool has_equals = false;
};
template <typename TStream>
struct StringTraits<
TStream,
// match any type that is derived from std::istream:
typename EnableIf<IsBaseOf<
std::istream, typename RemoveReference<TStream>::type>::value>::type>
: StdStreamTraits {};
}
}
#endif
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