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https://github.com/eledio-devices/thirdparty-ArduinoJson.git
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102 lines
2.9 KiB
C++
102 lines
2.9 KiB
C++
// Copyright Benoit Blanchon 2014-2017
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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 "Data/JsonVariantAs.hpp"
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#include "Polyfills/attributes.hpp"
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#include "Serialization/JsonPrintable.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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// DEPRECATED: use as<char*>() instead
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FORCE_INLINE const char *asString() const {
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return as<const char *>();
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}
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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 {
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return as<JsonArray &>();
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}
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// DEPRECATED: use as<JsonArray>() instead
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FORCE_INLINE JsonArray &asArray() const {
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return as<JsonArray &>();
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}
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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 {
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return as<JsonObject &>();
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}
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// DEPRECATED: use as<JsonObject>() instead
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FORCE_INLINE JsonObject &asObject() const {
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return as<JsonObject &>();
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}
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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 typename Internals::JsonVariantAs<T>::type 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 {
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return asArray().size() + asObject().size();
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}
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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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FORCE_INLINE JsonArraySubscript operator[](int index);
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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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template <typename TString>
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FORCE_INLINE
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typename TypeTraits::EnableIf<Internals::StringFuncs<TString>::has_equals,
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const JsonObjectSubscript<TString> >::type
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operator[](const TString &key) const {
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return asObject()[key];
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}
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template <typename TString>
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FORCE_INLINE
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typename TypeTraits::EnableIf<Internals::StringFuncs<TString>::has_equals,
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JsonObjectSubscript<TString> >::type
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operator[](const TString &key) {
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return asObject()[key];
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}
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private:
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const TImpl *impl() const {
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return static_cast<const TImpl *>(this);
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}
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};
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}
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