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