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Use defaulted comparison operators in C++ (#4723)

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Comparison operators which compared against every class member variable
now use C++20's default comparison operators.

Also remove operator!= that in C++20 is now auto-generated from operator==.
This commit is contained in:
Tyler Veness
2022-11-27 21:01:01 -08:00
committed by GitHub
parent 135c13958f
commit 42b6d4e3f7
39 changed files with 25 additions and 367 deletions
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29
ntcore/src/main/native/cpp/net3/SequenceNumber.cpp
View File

@@ -1,29 +0,0 @@
// Copyright (c) FIRST and other WPILib contributors.
// Open Source Software; you can modify and/or share it under the terms of
// the WPILib BSD license file in the root directory of this project.
#include "SequenceNumber.h"
namespace nt::net3 {
bool operator<(const SequenceNumber& lhs, const SequenceNumber& rhs) {
if (lhs.m_value < rhs.m_value) {
return (rhs.m_value - lhs.m_value) < (1u << 15);
} else if (lhs.m_value > rhs.m_value) {
return (lhs.m_value - rhs.m_value) > (1u << 15);
} else {
return false;
}
}
bool operator>(const SequenceNumber& lhs, const SequenceNumber& rhs) {
if (lhs.m_value < rhs.m_value) {
return (rhs.m_value - lhs.m_value) > (1u << 15);
} else if (lhs.m_value > rhs.m_value) {
return (lhs.m_value - rhs.m_value) < (1u << 15);
} else {
return false;
}
}
} // namespace nt::net3

29
ntcore/src/main/native/cpp/net3/SequenceNumber.h
View File

@@ -4,6 +4,8 @@
#pragma once
#include <compare>
namespace nt::net3 {
/* A sequence number per RFC 1982 */
@@ -26,34 +28,11 @@ class SequenceNumber {
return tmp;
}
friend bool operator<(const SequenceNumber& lhs, const SequenceNumber& rhs);
friend bool operator>(const SequenceNumber& lhs, const SequenceNumber& rhs);
friend bool operator<=(const SequenceNumber& lhs, const SequenceNumber& rhs);
friend bool operator>=(const SequenceNumber& lhs, const SequenceNumber& rhs);
friend bool operator==(const SequenceNumber& lhs, const SequenceNumber& rhs);
friend bool operator!=(const SequenceNumber& lhs, const SequenceNumber& rhs);
friend auto operator<=>(const SequenceNumber& lhs,
const SequenceNumber& rhs) = default;
private:
unsigned int m_value{0};
};
bool operator<(const SequenceNumber& lhs, const SequenceNumber& rhs);
bool operator>(const SequenceNumber& lhs, const SequenceNumber& rhs);
inline bool operator<=(const SequenceNumber& lhs, const SequenceNumber& rhs) {
return lhs == rhs || lhs < rhs;
}
inline bool operator>=(const SequenceNumber& lhs, const SequenceNumber& rhs) {
return lhs == rhs || lhs > rhs;
}
inline bool operator==(const SequenceNumber& lhs, const SequenceNumber& rhs) {
return lhs.m_value == rhs.m_value;
}
inline bool operator!=(const SequenceNumber& lhs, const SequenceNumber& rhs) {
return lhs.m_value != rhs.m_value;
}
} // namespace nt::net3