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ArduinoJson/include/ArduinoJson/JsonVariantComparisons.hpp
2017-01-03 22:03:50 +01:00

107 lines
3.7 KiB
C++

// Copyright Benoit Blanchon 2014-2016
// MIT License
//
// Arduino JSON library
// https://github.com/bblanchon/ArduinoJson
// If you like this project, please add a star!
#pragma once
#include "JsonVariantBase.hpp"
#include "StringTraits/StringTraits.hpp"
#include "TypeTraits/EnableIf.hpp"
namespace ArduinoJson {
template <typename TVariant, typename TComparand, typename Enable = void>
struct JsonVariantComparer {
static bool equals(const TVariant &variant, const TComparand &comparand) {
return variant.template as<TComparand>() == comparand;
}
};
template <typename TVariant, typename TString>
struct JsonVariantComparer<
TVariant, TString, typename TypeTraits::EnableIf<
Internals::StringFuncs<TString>::has_equals>::type> {
static bool equals(const TVariant &variant, const TString &comparand) {
const char *value = variant.template as<const char *>();
return Internals::StringFuncs<TString>::equals(comparand, value);
}
};
template <typename TImpl, typename TComparand>
inline bool operator==(const JsonVariantBase<TImpl> &variant,
TComparand comparand) {
typedef JsonVariantBase<TImpl> TVariant;
return JsonVariantComparer<TVariant, TComparand>::equals(variant, comparand);
}
template <typename TImpl, typename TComparand>
inline bool operator==(TComparand comparand,
const JsonVariantBase<TImpl> &variant) {
typedef JsonVariantBase<TImpl> TVariant;
return JsonVariantComparer<TVariant, TComparand>::equals(variant, comparand);
}
template <typename TImpl, typename TComparand>
inline bool operator!=(const JsonVariantBase<TImpl> &variant,
TComparand comparand) {
typedef JsonVariantBase<TImpl> TVariant;
return !JsonVariantComparer<TVariant, TComparand>::equals(variant, comparand);
}
template <typename TImpl, typename TComparand>
inline bool operator!=(TComparand comparand,
const JsonVariantBase<TImpl> &variant) {
typedef JsonVariantBase<TImpl> TVariant;
return !JsonVariantComparer<TVariant, TComparand>::equals(variant, comparand);
}
template <typename TImpl, typename TComparand>
inline bool operator<=(const JsonVariantBase<TImpl> &left, TComparand right) {
return left.template as<TComparand>() <= right;
}
template <typename TImpl, typename TComparand>
inline bool operator<=(TComparand comparand,
const JsonVariantBase<TImpl> &variant) {
return comparand <= variant.template as<TComparand>();
}
template <typename TImpl, typename TComparand>
inline bool operator>=(const JsonVariantBase<TImpl> &variant,
TComparand comparand) {
return variant.template as<TComparand>() >= comparand;
}
template <typename TImpl, typename TComparand>
inline bool operator>=(TComparand comparand,
const JsonVariantBase<TImpl> &variant) {
return comparand >= variant.template as<TComparand>();
}
template <typename TImpl, typename TComparand>
inline bool operator<(const JsonVariantBase<TImpl> &varian,
TComparand comparand) {
return varian.template as<TComparand>() < comparand;
}
template <typename TImpl, typename TComparand>
inline bool operator<(TComparand comparand,
const JsonVariantBase<TImpl> &variant) {
return comparand < variant.template as<TComparand>();
}
template <typename TImpl, typename TComparand>
inline bool operator>(const JsonVariantBase<TImpl> &variant,
TComparand comparand) {
return variant.template as<TComparand>() > comparand;
}
template <typename TImpl, typename TComparand>
inline bool operator>(TComparand comparand,
const JsonVariantBase<TImpl> &variant) {
return comparand > variant.template as<TComparand>();
}
}