mirror of
https://github.com/eledio-devices/thirdparty-ArduinoJson.git
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124 lines
3.9 KiB
C++
124 lines
3.9 KiB
C++
// ArduinoJson - https://arduinojson.org
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// Copyright © 2014-2022, Benoit BLANCHON
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// MIT License
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#pragma once
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#include <ArduinoJson/Numbers/JsonInteger.hpp>
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#include <ArduinoJson/Polyfills/type_traits.hpp>
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namespace ARDUINOJSON_NAMESPACE {
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enum CompareResult {
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COMPARE_RESULT_DIFFER = 0,
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COMPARE_RESULT_EQUAL = 1,
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COMPARE_RESULT_GREATER = 2,
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COMPARE_RESULT_LESS = 4,
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COMPARE_RESULT_GREATER_OR_EQUAL = 3,
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COMPARE_RESULT_LESS_OR_EQUAL = 5
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};
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template <typename T>
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CompareResult arithmeticCompare(const T& lhs, const T& rhs) {
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if (lhs < rhs)
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return COMPARE_RESULT_LESS;
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else if (lhs > rhs)
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return COMPARE_RESULT_GREATER;
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else
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return COMPARE_RESULT_EQUAL;
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}
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template <typename T1, typename T2>
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CompareResult arithmeticCompare(
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const T1& lhs, const T2& rhs,
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typename enable_if<is_integral<T1>::value && is_integral<T2>::value &&
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sizeof(T1) < sizeof(T2),
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int // Using int instead of void to avoid C2572 on
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// Visual Studio 2012, 2013, and 2015
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>::type* = 0) {
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return arithmeticCompare<T2>(static_cast<T2>(lhs), rhs);
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}
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template <typename T1, typename T2>
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CompareResult arithmeticCompare(
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const T1& lhs, const T2& rhs,
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typename enable_if<is_integral<T1>::value && is_integral<T2>::value &&
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sizeof(T2) < sizeof(T1)>::type* = 0) {
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return arithmeticCompare<T1>(lhs, static_cast<T1>(rhs));
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}
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template <typename T1, typename T2>
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CompareResult arithmeticCompare(
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const T1& lhs, const T2& rhs,
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typename enable_if<is_integral<T1>::value && is_integral<T2>::value &&
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is_signed<T1>::value == is_signed<T2>::value &&
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sizeof(T2) == sizeof(T1)>::type* = 0) {
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return arithmeticCompare<T1>(lhs, static_cast<T1>(rhs));
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}
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template <typename T1, typename T2>
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CompareResult arithmeticCompare(
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const T1& lhs, const T2& rhs,
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typename enable_if<is_integral<T1>::value && is_integral<T2>::value &&
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is_unsigned<T1>::value && is_signed<T2>::value &&
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sizeof(T2) == sizeof(T1)>::type* = 0) {
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if (rhs < 0)
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return COMPARE_RESULT_GREATER;
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return arithmeticCompare<T1>(lhs, static_cast<T1>(rhs));
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}
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template <typename T1, typename T2>
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CompareResult arithmeticCompare(
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const T1& lhs, const T2& rhs,
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typename enable_if<is_integral<T1>::value && is_integral<T2>::value &&
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is_signed<T1>::value && is_unsigned<T2>::value &&
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sizeof(T2) == sizeof(T1)>::type* = 0) {
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if (lhs < 0)
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return COMPARE_RESULT_LESS;
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return arithmeticCompare<T2>(static_cast<T2>(lhs), rhs);
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}
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template <typename T1, typename T2>
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CompareResult arithmeticCompare(
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const T1& lhs, const T2& rhs,
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typename enable_if<is_floating_point<T1>::value ||
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is_floating_point<T2>::value>::type* = 0) {
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return arithmeticCompare<double>(static_cast<double>(lhs),
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static_cast<double>(rhs));
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}
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template <typename T2>
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CompareResult arithmeticCompareNegateLeft(
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JsonUInt, const T2&,
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typename enable_if<is_unsigned<T2>::value>::type* = 0) {
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return COMPARE_RESULT_LESS;
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}
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template <typename T2>
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CompareResult arithmeticCompareNegateLeft(
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JsonUInt lhs, const T2& rhs,
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typename enable_if<is_signed<T2>::value>::type* = 0) {
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if (rhs > 0)
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return COMPARE_RESULT_LESS;
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return arithmeticCompare(-rhs, static_cast<T2>(lhs));
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}
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template <typename T1>
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CompareResult arithmeticCompareNegateRight(
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const T1&, JsonUInt,
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typename enable_if<is_unsigned<T1>::value>::type* = 0) {
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return COMPARE_RESULT_GREATER;
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}
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template <typename T1>
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CompareResult arithmeticCompareNegateRight(
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const T1& lhs, JsonUInt rhs,
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typename enable_if<is_signed<T1>::value>::type* = 0) {
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if (lhs > 0)
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return COMPARE_RESULT_GREATER;
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return arithmeticCompare(static_cast<T1>(rhs), -lhs);
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}
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} // namespace ARDUINOJSON_NAMESPACE
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