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https://github.com/wpilibsuite/allwpilib
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62 lines
2.0 KiB
C++
62 lines
2.0 KiB
C++
/*----------------------------------------------------------------------------*/
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/* Copyright (c) FIRST 2015. All Rights Reserved. */
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/* Open Source Software - may be modified and shared by FRC teams. The code */
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/* must be accompanied by the FIRST BSD license file in the root directory of */
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/* the project. */
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/*----------------------------------------------------------------------------*/
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#ifndef NT_SEQNUM_H_
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#define NT_SEQNUM_H_
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namespace ntimpl {
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class SequenceNumber {
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public:
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explicit SequenceNumber(unsigned int val) : m_val(val) {}
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unsigned int GetVal() const { return m_val; }
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SequenceNumber& operator++() {
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++m_val;
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if (m_val > 0xffff) m_val = 0;
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return *this;
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}
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SequenceNumber operator++(int) {
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SequenceNumber tmp(*this);
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operator++();
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return tmp;
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}
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friend bool operator<(const SequenceNumber& lhs, const SequenceNumber& rhs);
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friend bool operator>(const SequenceNumber& lhs, const SequenceNumber& rhs);
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friend bool operator<=(const SequenceNumber& lhs, const SequenceNumber& rhs);
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friend bool operator>=(const SequenceNumber& lhs, const SequenceNumber& rhs);
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friend bool operator==(const SequenceNumber& lhs, const SequenceNumber& rhs);
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friend bool operator!=(const SequenceNumber& lhs, const SequenceNumber& rhs);
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private:
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unsigned int m_val;
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};
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bool operator<(const SequenceNumber& lhs, const SequenceNumber& rhs);
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bool operator>(const SequenceNumber& lhs, const SequenceNumber& rhs);
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inline bool operator<=(const SequenceNumber& lhs, const SequenceNumber& rhs) {
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return lhs == rhs || lhs < rhs;
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}
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inline bool operator>=(const SequenceNumber& lhs, const SequenceNumber& rhs) {
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return lhs == rhs || lhs > rhs;
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}
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inline bool operator==(const SequenceNumber& lhs, const SequenceNumber& rhs) {
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return lhs.m_val == rhs.m_val;
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}
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inline bool operator!=(const SequenceNumber& lhs, const SequenceNumber& rhs) {
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return lhs.m_val != rhs.m_val;
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}
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} // namespace ntimpl
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#endif // NT_SEQNUM_H_
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