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https://github.com/bblanchon/ArduinoJson.git
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8733f95e51
Moved all build settings to `ArduinoJson/Configuration.hpp` Added AppVeyor settings in source tree
134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
// Copyright Benoit Blanchon 2014-2016
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// MIT License
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//
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// Arduino JSON library
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// https://github.com/bblanchon/ArduinoJson
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// If you like this project, please add a star!
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#pragma once
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#include "Internals/ForceInline.hpp"
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#include "JsonObjectKey.hpp"
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namespace ArduinoJson {
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// Forward declarations.
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class JsonArraySubscript;
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template <typename TKey>
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class JsonObjectSubscript;
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template <typename TImpl>
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class JsonVariantBase : public Internals::JsonPrintable<TImpl> {
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public:
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FORCE_INLINE const char *asString() const { return as<const char *>(); }
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// Gets the variant as an array.
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// Returns a reference to the JsonArray or JsonArray::invalid() if the
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// variant
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// is not an array.
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FORCE_INLINE operator JsonArray &() const { return as<JsonArray &>(); }
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FORCE_INLINE JsonArray &asArray() const { return as<JsonArray &>(); }
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// Gets the variant as an object.
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// Returns a reference to the JsonObject or JsonObject::invalid() if the
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// variant is not an object.
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FORCE_INLINE operator JsonObject &() const { return as<JsonObject &>(); }
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FORCE_INLINE JsonObject &asObject() const { return as<JsonObject &>(); }
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template <typename T>
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FORCE_INLINE operator T() const {
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return as<T>();
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}
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template <typename T>
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FORCE_INLINE const T as() const {
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return impl()->template as<T>();
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}
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// Mimics an array or an object.
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// Returns the size of the array or object if the variant has that type.
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// Returns 0 if the variant is neither an array nor an object
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size_t size() const { return asArray().size() + asObject().size(); }
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// Mimics an array.
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// Returns the element at specified index if the variant is an array.
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// Returns JsonVariant::invalid() if the variant is not an array.
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FORCE_INLINE const JsonArraySubscript operator[](int index) const;
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// Mimics an object.
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// Returns the value associated with the specified key if the variant is
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// an object.
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// Return JsonVariant::invalid() if the variant is not an object.
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FORCE_INLINE const JsonObjectSubscript<const char *> operator[](
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const char *key) const;
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FORCE_INLINE const JsonObjectSubscript<const String &> operator[](
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const String &key) const;
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// Serialize the variant to a JsonWriter
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void writeTo(Internals::JsonWriter &writer) const;
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private:
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const TImpl *impl() const { return static_cast<const TImpl *>(this); }
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};
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template <typename TImpl, typename TComparand>
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inline bool operator==(const JsonVariantBase<TImpl> &left, TComparand right) {
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return left.template as<TComparand>() == right;
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}
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template <typename TImpl, typename TComparand>
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inline bool operator==(TComparand left, const JsonVariantBase<TImpl> &right) {
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return left == right.template as<TComparand>();
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}
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template <typename TImpl, typename TComparand>
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inline bool operator!=(const JsonVariantBase<TImpl> &left, TComparand right) {
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return left.template as<TComparand>() != right;
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}
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template <typename TImpl, typename TComparand>
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inline bool operator!=(TComparand left, const JsonVariantBase<TImpl> &right) {
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return left != right.template as<TComparand>();
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}
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template <typename TImpl, typename TComparand>
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inline bool operator<=(const JsonVariantBase<TImpl> &left, TComparand right) {
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return left.template as<TComparand>() <= right;
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}
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template <typename TImpl, typename TComparand>
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inline bool operator<=(TComparand left, const JsonVariantBase<TImpl> &right) {
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return left <= right.template as<TComparand>();
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}
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template <typename TImpl, typename TComparand>
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inline bool operator>=(const JsonVariantBase<TImpl> &left, TComparand right) {
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return left.template as<TComparand>() >= right;
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}
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template <typename TImpl, typename TComparand>
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inline bool operator>=(TComparand left, const JsonVariantBase<TImpl> &right) {
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return left >= right.template as<TComparand>();
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}
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template <typename TImpl, typename TComparand>
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inline bool operator<(const JsonVariantBase<TImpl> &left, TComparand right) {
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return left.template as<TComparand>() < right;
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}
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template <typename TImpl, typename TComparand>
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inline bool operator<(TComparand left, const JsonVariantBase<TImpl> &right) {
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return left < right.template as<TComparand>();
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}
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template <typename TImpl, typename TComparand>
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inline bool operator>(const JsonVariantBase<TImpl> &left, TComparand right) {
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return left.template as<TComparand>() > right;
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}
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template <typename TImpl, typename TComparand>
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inline bool operator>(TComparand left, const JsonVariantBase<TImpl> &right) {
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return left > right.template as<TComparand>();
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}
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}
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