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// ArduinoJson - https://arduinojson.org
// Copyright Benoit Blanchon 2014-2021
// MIT License
#pragma once
#include <ArduinoJson/Namespace.hpp>
#include <stdint.h> // uint16_t, uint32_t
// The high surrogate may be uninitialized if the pair is invalid,
// we choose to ignore the problem to reduce the size of the code
// Garbage in => Garbage out
#if defined(__GNUC__)
#if __GNUC__ >= 7
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
#endif
#endif
namespace ARDUINOJSON_NAMESPACE {
namespace Utf16 {
inline bool isHighSurrogate(uint16_t codeunit) {
return codeunit >= 0xD800 && codeunit < 0xDC00;
}
inline bool isLowSurrogate(uint16_t codeunit) {
return codeunit >= 0xDC00 && codeunit < 0xE000;
}
class Codepoint {
public:
Codepoint() : _highSurrogate(0) {}
bool append(uint16_t codeunit) {
if (isHighSurrogate(codeunit)) {
_highSurrogate = codeunit & 0x3FF;
return false;
}
if (isLowSurrogate(codeunit)) {
_codepoint =
uint32_t(0x10000 + ((_highSurrogate << 10) | (codeunit & 0x3FF)));
return true;
}
_codepoint = codeunit;
return true;
}
uint32_t value() const {
return _codepoint;
}
private:
uint16_t _highSurrogate;
uint32_t _codepoint;
};
} // namespace Utf16
} // namespace ARDUINOJSON_NAMESPACE
#if defined(__GNUC__)
#if __GNUC__ >= 8
#pragma GCC diagnostic pop
#endif
#endif
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