Renamed and moved internal files

src/ArduinoJson.hpp

@@ -6,19 +6,19 @@
 
 #include "ArduinoJson/Namespace.hpp"
 
-#include "ArduinoJson/JsonArray.hpp"
-#include "ArduinoJson/JsonObject.hpp"
-#include "ArduinoJson/JsonVariant.hpp"
+#include "ArduinoJson/Array/ArrayRef.hpp"
+#include "ArduinoJson/Object/ObjectRef.hpp"
+#include "ArduinoJson/Variant/VariantRef.hpp"
 
-#include "ArduinoJson/DynamicJsonDocument.hpp"
-#include "ArduinoJson/StaticJsonDocument.hpp"
+#include "ArduinoJson/Document/DynamicJsonDocument.hpp"
+#include "ArduinoJson/Document/StaticJsonDocument.hpp"
 
-#include "ArduinoJson/Data/VariantAsImpl.hpp"
-#include "ArduinoJson/JsonArrayImpl.hpp"
-#include "ArduinoJson/JsonArraySubscript.hpp"
-#include "ArduinoJson/JsonObjectImpl.hpp"
-#include "ArduinoJson/JsonObjectSubscript.hpp"
-#include "ArduinoJson/JsonVariantImpl.hpp"
+#include "ArduinoJson/Array/ArrayImpl.hpp"
+#include "ArduinoJson/Array/ArraySubscript.hpp"
+#include "ArduinoJson/Object/ObjectImpl.hpp"
+#include "ArduinoJson/Object/ObjectSubscript.hpp"
+#include "ArduinoJson/Variant/VariantAsImpl.hpp"
+#include "ArduinoJson/Variant/VariantImpl.hpp"
 
 #include "ArduinoJson/Json/JsonDeserializer.hpp"
 #include "ArduinoJson/Json/JsonSerializer.hpp"
@@ -27,19 +27,19 @@
 #include "ArduinoJson/MsgPack/MsgPackSerializer.hpp"
 
 namespace ArduinoJson {
+typedef ARDUINOJSON_NAMESPACE::ArrayRef JsonArray;
+typedef ARDUINOJSON_NAMESPACE::ArrayConstRef JsonArrayConst;
+typedef ARDUINOJSON_NAMESPACE::Float JsonFloat;
+typedef ARDUINOJSON_NAMESPACE::Integer JsonInteger;
+typedef ARDUINOJSON_NAMESPACE::ObjectRef JsonObject;
+typedef ARDUINOJSON_NAMESPACE::ObjectConstRef JsonObjectConst;
+typedef ARDUINOJSON_NAMESPACE::Pair JsonPair;
+typedef ARDUINOJSON_NAMESPACE::UInt JsonUInt;
+typedef ARDUINOJSON_NAMESPACE::VariantRef JsonVariant;
+typedef ARDUINOJSON_NAMESPACE::VariantConstRef JsonVariantConst;
 using ARDUINOJSON_NAMESPACE::DeserializationError;
 using ARDUINOJSON_NAMESPACE::DynamicJsonDocument;
-using ARDUINOJSON_NAMESPACE::JsonArray;
-using ARDUINOJSON_NAMESPACE::JsonArrayConst;
-using ARDUINOJSON_NAMESPACE::JsonFloat;
-using ARDUINOJSON_NAMESPACE::JsonInteger;
-using ARDUINOJSON_NAMESPACE::JsonKey;
-using ARDUINOJSON_NAMESPACE::JsonObject;
-using ARDUINOJSON_NAMESPACE::JsonObjectConst;
-using ARDUINOJSON_NAMESPACE::JsonPair;
-using ARDUINOJSON_NAMESPACE::JsonUInt;
-using ARDUINOJSON_NAMESPACE::JsonVariant;
-using ARDUINOJSON_NAMESPACE::JsonVariantConst;
+using ARDUINOJSON_NAMESPACE::Key;
 using ARDUINOJSON_NAMESPACE::serialized;
 using ARDUINOJSON_NAMESPACE::StaticJsonDocument;
 }  // namespace ArduinoJson

src/ArduinoJson/Array/ArrayFunctions.hpp

@@ -4,12 +4,12 @@
 
 #pragma once
 
-#include "JsonVariantData.hpp"
-#include "SlotFunctions.hpp"
+#include "../Variant/SlotFunctions.hpp"
+#include "../Variant/VariantData.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
-inline JsonVariantData* arrayAdd(JsonArrayData* arr, MemoryPool* pool) {
+inline VariantData* arrayAdd(ArrayData* arr, MemoryPool* pool) {
   if (!arr) return 0;
 
   VariantSlot* slot = pool->allocVariant();
@@ -31,17 +31,17 @@ inline JsonVariantData* arrayAdd(JsonArrayData* arr, MemoryPool* pool) {
   return &slot->value;
 }
 
-inline VariantSlot* arrayGetSlot(const JsonArrayData* arr, size_t index) {
+inline VariantSlot* arrayGetSlot(const ArrayData* arr, size_t index) {
   if (!arr) return 0;
   return arr->head->getNext(index);
 }
 
-inline JsonVariantData* arrayGet(const JsonArrayData* arr, size_t index) {
+inline VariantData* arrayGet(const ArrayData* arr, size_t index) {
   VariantSlot* slot = arrayGetSlot(arr, index);
   return slot ? &slot->value : 0;
 }
 
-inline void arrayRemove(JsonArrayData* arr, VariantSlot* slot) {
+inline void arrayRemove(ArrayData* arr, VariantSlot* slot) {
   if (!arr || !slot) return;
 
   if (slot->prev)
@@ -54,20 +54,19 @@ inline void arrayRemove(JsonArrayData* arr, VariantSlot* slot) {
     arr->tail = slot->getPrev();
 }
 
-inline void arrayRemove(JsonArrayData* arr, size_t index) {
+inline void arrayRemove(ArrayData* arr, size_t index) {
   arrayRemove(arr, arrayGetSlot(arr, index));
 }
 
-inline void arrayClear(JsonArrayData* arr) {
+inline void arrayClear(ArrayData* arr) {
   if (!arr) return;
   arr->head = 0;
   arr->tail = 0;
 }
 
-bool variantCopy(JsonVariantData*, const JsonVariantData*, MemoryPool*);
+bool variantCopy(VariantData*, const VariantData*, MemoryPool*);
 
-inline bool arrayCopy(JsonArrayData* dst, const JsonArrayData* src,
-                      MemoryPool* pool) {
+inline bool arrayCopy(ArrayData* dst, const ArrayData* src, MemoryPool* pool) {
   if (!dst || !src) return false;
   arrayClear(dst);
   for (VariantSlot* s = src->head; s; s = s->getNext()) {
@@ -76,9 +75,9 @@ inline bool arrayCopy(JsonArrayData* dst, const JsonArrayData* src,
   return true;
 }
 
-bool variantEquals(const JsonVariantData*, const JsonVariantData*);
+bool variantEquals(const VariantData*, const VariantData*);
 
-inline bool arrayEquals(const JsonArrayData* a1, const JsonArrayData* a2) {
+inline bool arrayEquals(const ArrayData* a1, const ArrayData* a2) {
   if (a1 == a2) return true;
   if (!a1 || !a2) return false;
   VariantSlot* s1 = a1->head;
@@ -92,7 +91,7 @@ inline bool arrayEquals(const JsonArrayData* a1, const JsonArrayData* a2) {
   }
 }
 
-inline size_t arraySize(const JsonArrayData* arr) {
+inline size_t arraySize(const ArrayData* arr) {
   if (!arr) return 0;
   return slotSize(arr->head);
 }

src/ArduinoJson/Array/ArrayImpl.hpp

@@ -0,0 +1,19 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Object/ObjectRef.hpp"
+#include "ArrayRef.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+inline ArrayRef ArrayRef::createNestedArray() const {
+  return add().to<ArrayRef>();
+}
+
+inline ObjectRef ArrayRef::createNestedObject() const {
+  return add().to<ObjectRef>();
+}
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Array/ArrayIterator.hpp

@@ -0,0 +1,122 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Variant/SlotFunctions.hpp"
+#include "../Variant/VariantRef.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+class VariantPtr {
+ public:
+  VariantPtr(MemoryPool *memoryPool, VariantData *data)
+      : _variant(memoryPool, data) {}
+
+  VariantRef *operator->() {
+    return &_variant;
+  }
+
+  VariantRef &operator*() {
+    return _variant;
+  }
+
+ private:
+  VariantRef _variant;
+};
+
+class ArrayIterator {
+ public:
+  ArrayIterator() : _slot(0) {}
+  explicit ArrayIterator(MemoryPool *memoryPool, VariantSlot *slot)
+      : _memoryPool(memoryPool), _slot(slot) {}
+
+  VariantRef operator*() const {
+    return VariantRef(_memoryPool, &_slot->value);
+  }
+  VariantPtr operator->() {
+    return VariantPtr(_memoryPool, &_slot->value);
+  }
+
+  bool operator==(const ArrayIterator &other) const {
+    return _slot == other._slot;
+  }
+
+  bool operator!=(const ArrayIterator &other) const {
+    return _slot != other._slot;
+  }
+
+  ArrayIterator &operator++() {
+    _slot = _slot->getNext();
+    return *this;
+  }
+
+  ArrayIterator &operator+=(size_t distance) {
+    _slot = _slot->getNext(distance);
+    return *this;
+  }
+
+  VariantSlot *internal() {
+    return _slot;
+  }
+
+ private:
+  MemoryPool *_memoryPool;
+  VariantSlot *_slot;
+};
+
+class VariantConstPtr {
+ public:
+  VariantConstPtr(const VariantData *data) : _variant(data) {}
+
+  VariantConstRef *operator->() {
+    return &_variant;
+  }
+
+  VariantConstRef &operator*() {
+    return _variant;
+  }
+
+ private:
+  VariantConstRef _variant;
+};
+
+class ArrayConstRefIterator {
+ public:
+  ArrayConstRefIterator() : _slot(0) {}
+  explicit ArrayConstRefIterator(const VariantSlot *slot) : _slot(slot) {}
+
+  VariantConstRef operator*() const {
+    return VariantConstRef(&_slot->value);
+  }
+  VariantConstPtr operator->() {
+    return VariantConstPtr(&_slot->value);
+  }
+
+  bool operator==(const ArrayConstRefIterator &other) const {
+    return _slot == other._slot;
+  }
+
+  bool operator!=(const ArrayConstRefIterator &other) const {
+    return _slot != other._slot;
+  }
+
+  ArrayConstRefIterator &operator++() {
+    _slot = _slot->getNext();
+    return *this;
+  }
+
+  ArrayConstRefIterator &operator+=(size_t distance) {
+    _slot = _slot->getNext(distance);
+    return *this;
+  }
+
+  const VariantSlot *internal() {
+    return _slot;
+  }
+
+ private:
+  const VariantSlot *_slot;
+};
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Array/ArrayRef.hpp

@@ -4,9 +4,9 @@
 
 #pragma once
 
-#include "Data/ArrayFunctions.hpp"
-#include "Data/JsonVariantData.hpp"
-#include "JsonArrayIterator.hpp"
+#include "../Variant/VariantData.hpp"
+#include "ArrayFunctions.hpp"
+#include "ArrayIterator.hpp"
 
 // Returns the size (in bytes) of an array with n elements.
 // Can be very handy to determine the size of a StaticMemoryPool.
@@ -15,18 +15,18 @@
 
 namespace ARDUINOJSON_NAMESPACE {
 
-class JsonObject;
-class JsonArraySubscript;
+class ObjectRef;
+class ArraySubscript;
 
 template <typename TData>
-class JsonArrayProxy {
+class ArrayRefBase {
  public:
   FORCE_INLINE bool isNull() const {
     return _data == 0;
   }
 
-  FORCE_INLINE JsonVariantConst operator[](size_t index) const {
-    return JsonVariantConst(arrayGet(_data, index));
+  FORCE_INLINE VariantConstRef operator[](size_t index) const {
+    return VariantConstRef(arrayGet(_data, index));
   }
 
   FORCE_INLINE size_t size() const {
@@ -34,17 +34,16 @@ class JsonArrayProxy {
   }
 
  protected:
-  JsonArrayProxy(TData* data) : _data(data) {}
+  ArrayRefBase(TData* data) : _data(data) {}
   TData* _data;
 };
 
-class JsonArrayConst : public JsonArrayProxy<const JsonArrayData>,
-                       public Visitable {
-  friend class JsonArray;
-  typedef JsonArrayProxy<const JsonArrayData> proxy_type;
+class ArrayConstRef : public ArrayRefBase<const ArrayData>, public Visitable {
+  friend class ArrayRef;
+  typedef ArrayRefBase<const ArrayData> base_type;
 
  public:
-  typedef JsonArrayConstIterator iterator;
+  typedef ArrayConstRefIterator iterator;
 
   template <typename Visitor>
   FORCE_INLINE void accept(Visitor& visitor) const {
@@ -63,43 +62,43 @@ class JsonArrayConst : public JsonArrayProxy<const JsonArrayData>,
     return iterator();
   }
 
-  FORCE_INLINE JsonArrayConst() : proxy_type(0) {}
-  FORCE_INLINE JsonArrayConst(const JsonArrayData* data) : proxy_type(data) {}
+  FORCE_INLINE ArrayConstRef() : base_type(0) {}
+  FORCE_INLINE ArrayConstRef(const ArrayData* data) : base_type(data) {}
 
-  FORCE_INLINE bool operator==(JsonArrayConst rhs) const {
+  FORCE_INLINE bool operator==(ArrayConstRef rhs) const {
     return arrayEquals(_data, rhs._data);
   }
 };
 
-class JsonArray : public JsonArrayProxy<JsonArrayData>, public Visitable {
-  typedef JsonArrayProxy<JsonArrayData> proxy_type;
+class ArrayRef : public ArrayRefBase<ArrayData>, public Visitable {
+  typedef ArrayRefBase<ArrayData> base_type;
 
  public:
-  typedef JsonArrayIterator iterator;
+  typedef ArrayIterator iterator;
 
-  FORCE_INLINE JsonArray() : proxy_type(0), _memoryPool(0) {}
-  FORCE_INLINE JsonArray(MemoryPool* pool, JsonArrayData* data)
-      : proxy_type(data), _memoryPool(pool) {}
+  FORCE_INLINE ArrayRef() : base_type(0), _memoryPool(0) {}
+  FORCE_INLINE ArrayRef(MemoryPool* pool, ArrayData* data)
+      : base_type(data), _memoryPool(pool) {}
 
-  operator JsonVariant() {
-    return JsonVariant(_memoryPool, getVariantData(_data));
+  operator VariantRef() {
+    return VariantRef(_memoryPool, getVariantData(_data));
   }
 
-  operator JsonArrayConst() const {
-    return JsonArrayConst(_data);
+  operator ArrayConstRef() const {
+    return ArrayConstRef(_data);
   }
 
   // Adds the specified value at the end of the array.
   //
   // bool add(TValue);
-  // TValue = bool, long, int, short, float, double, serialized, JsonVariant,
-  //          std::string, String, JsonObject
+  // TValue = bool, long, int, short, float, double, serialized, VariantRef,
+  //          std::string, String, ObjectRef
   template <typename T>
   FORCE_INLINE bool add(const T& value) const {
     return add().set(value);
   }
   // Adds the specified value at the end of the array.
-  FORCE_INLINE bool add(JsonArray value) const {
+  FORCE_INLINE bool add(ArrayRef value) const {
     return add().set(value);
   }
   //
@@ -110,8 +109,8 @@ class JsonArray : public JsonArrayProxy<JsonArrayData>, public Visitable {
     return add().set(value);
   }
 
-  JsonVariant add() const {
-    return JsonVariant(_memoryPool, arrayAdd(_data, _memoryPool));
+  VariantRef add() const {
+    return VariantRef(_memoryPool, arrayAdd(_data, _memoryPool));
   }
 
   FORCE_INLINE iterator begin() const {
@@ -144,7 +143,7 @@ class JsonArray : public JsonArrayProxy<JsonArrayData>, public Visitable {
   bool copyFrom(T (&array)[N1][N2]) const {
     bool ok = true;
     for (size_t i = 0; i < N1; i++) {
-      JsonArray nestedArray = createNestedArray();
+      ArrayRef nestedArray = createNestedArray();
       for (size_t j = 0; j < N2; j++) {
         ok &= nestedArray.add(array[i][j]);
       }
@@ -152,8 +151,8 @@ class JsonArray : public JsonArrayProxy<JsonArrayData>, public Visitable {
     return ok;
   }
 
-  // Copy a JsonArray
-  FORCE_INLINE bool copyFrom(JsonArray src) const {
+  // Copy a ArrayRef
+  FORCE_INLINE bool copyFrom(ArrayRef src) const {
     return arrayCopy(_data, src._data, _memoryPool);
   }
 
@@ -177,22 +176,22 @@ class JsonArray : public JsonArrayProxy<JsonArrayData>, public Visitable {
     if (!_data) return;
     size_t i = 0;
     for (iterator it = begin(); it != end() && i < N1; ++it) {
-      it->as<JsonArray>().copyTo(array[i++]);
+      it->as<ArrayRef>().copyTo(array[i++]);
     }
   }
 
-  FORCE_INLINE JsonArray createNestedArray() const;
-  FORCE_INLINE JsonObject createNestedObject() const;
+  FORCE_INLINE ArrayRef createNestedArray() const;
+  FORCE_INLINE ObjectRef createNestedObject() const;
 
-  FORCE_INLINE JsonArraySubscript operator[](size_t index) const;
+  FORCE_INLINE ArraySubscript operator[](size_t index) const;
 
-  FORCE_INLINE bool operator==(JsonArray rhs) const {
+  FORCE_INLINE bool operator==(ArrayRef rhs) const {
     return arrayEquals(_data, rhs._data);
   }
 
   // Gets the value at the specified index.
-  FORCE_INLINE JsonVariant get(size_t index) const {
-    return JsonVariant(_memoryPool, arrayGet(_data, index));
+  FORCE_INLINE VariantRef get(size_t index) const {
+    return VariantRef(_memoryPool, arrayGet(_data, index));
   }
 
   // Removes element at specified position.
@@ -207,7 +206,7 @@ class JsonArray : public JsonArrayProxy<JsonArrayData>, public Visitable {
 
   template <typename Visitor>
   FORCE_INLINE void accept(Visitor& visitor) const {
-    JsonArrayConst(_data).accept(visitor);
+    ArrayConstRef(_data).accept(visitor);
   }
 
  private:

src/ArduinoJson/Array/ArraySubscript.hpp

@@ -4,8 +4,8 @@
 
 #pragma once
 
-#include "Configuration.hpp"
-#include "JsonVariantBase.hpp"
+#include "../Configuration.hpp"
+#include "../Operators/VariantOperators.hpp"
 
 #ifdef _MSC_VER
 #pragma warning(push)
@@ -13,24 +13,24 @@
 #endif
 
 namespace ARDUINOJSON_NAMESPACE {
-class JsonArraySubscript : public JsonVariantBase<JsonArraySubscript>,
-                           public Visitable {
+class ArraySubscript : public VariantOperators<ArraySubscript>,
+                       public Visitable {
  public:
-  FORCE_INLINE JsonArraySubscript(JsonArray array, size_t index)
+  FORCE_INLINE ArraySubscript(ArrayRef array, size_t index)
       : _array(array), _index(index) {}
 
-  FORCE_INLINE JsonArraySubscript& operator=(const JsonArraySubscript& src) {
-    get_impl().set(src.as<JsonVariantConst>());
+  FORCE_INLINE ArraySubscript& operator=(const ArraySubscript& src) {
+    get_impl().set(src.as<VariantConstRef>());
     return *this;
   }
 
   // Replaces the value
   //
   // operator=(const TValue&)
-  // TValue = bool, long, int, short, float, double, serialized, JsonVariant,
-  //          std::string, String, JsonArray, JsonObject
+  // TValue = bool, long, int, short, float, double, serialized, VariantRef,
+  //          std::string, String, ArrayRef, ObjectRef
   template <typename T>
-  FORCE_INLINE JsonArraySubscript& operator=(const T& src) {
+  FORCE_INLINE ArraySubscript& operator=(const T& src) {
     get_impl().set(src);
     return *this;
   }
@@ -38,7 +38,7 @@ class JsonArraySubscript : public JsonVariantBase<JsonArraySubscript>,
   // operator=(TValue)
   // TValue = char*, const char*, const FlashStringHelper*
   template <typename T>
-  FORCE_INLINE JsonArraySubscript& operator=(T* src) {
+  FORCE_INLINE ArraySubscript& operator=(T* src) {
     get_impl().set(src);
     return *this;
   }
@@ -48,7 +48,7 @@ class JsonArraySubscript : public JsonVariantBase<JsonArraySubscript>,
   }
 
   template <typename T>
-  FORCE_INLINE typename JsonVariantAs<T>::type as() const {
+  FORCE_INLINE typename VariantAs<T>::type as() const {
     return get_impl().as<T>();
   }
 
@@ -58,15 +58,15 @@ class JsonArraySubscript : public JsonVariantBase<JsonArraySubscript>,
   }
 
   template <typename T>
-  FORCE_INLINE typename JsonVariantTo<T>::type to() const {
+  FORCE_INLINE typename VariantTo<T>::type to() const {
     return get_impl().to<T>();
   }
 
   // Replaces the value
   //
   // bool set(const TValue&)
-  // TValue = bool, long, int, short, float, double, serialized, JsonVariant,
-  //          std::string, String, JsonArray, JsonObject
+  // TValue = bool, long, int, short, float, double, serialized, VariantRef,
+  //          std::string, String, ArrayRef, ObjectRef
   template <typename TValue>
   FORCE_INLINE bool set(const TValue& value) const {
     return get_impl().set(value);
@@ -89,22 +89,21 @@ class JsonArraySubscript : public JsonVariantBase<JsonArraySubscript>,
   }
 
  private:
-  FORCE_INLINE JsonVariant get_impl() const {
+  FORCE_INLINE VariantRef get_impl() const {
     return _array.get(_index);
   }
 
-  JsonArray _array;
+  ArrayRef _array;
   const size_t _index;
 };
 
 template <typename TImpl>
-inline JsonArraySubscript JsonVariantSubscripts<TImpl>::operator[](
-    size_t index) const {
-  return impl()->template as<JsonArray>()[index];
+inline ArraySubscript VariantSubscripts<TImpl>::operator[](size_t index) const {
+  return impl()->template as<ArrayRef>()[index];
 }
 
-inline JsonArraySubscript JsonArray::operator[](size_t index) const {
-  return JsonArraySubscript(*this, index);
+inline ArraySubscript ArrayRef::operator[](size_t index) const {
+  return ArraySubscript(*this, index);
 }
 }  // namespace ARDUINOJSON_NAMESPACE
 

src/ArduinoJson/Data/JsonVariantAs.hpp

@@ -1,49 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-namespace ARDUINOJSON_NAMESPACE {
-
-class JsonArray;
-class JsonArrayConst;
-class JsonObject;
-class JsonObjectConst;
-class JsonVariant;
-class JsonVariantConst;
-
-// A metafunction that returns the type of the value returned by
-// JsonVariant::as<T>()
-template <typename T>
-struct JsonVariantAs {
-  typedef T type;
-};
-
-template <>
-struct JsonVariantAs<char*> {
-  typedef const char* type;
-};
-
-// A metafunction that returns the type of the value returned by
-// JsonVariant::as<T>()
-template <typename T>
-struct JsonVariantConstAs {
-  typedef typename JsonVariantAs<T>::type type;
-};
-
-template <>
-struct JsonVariantConstAs<JsonVariant> {
-  typedef JsonVariantConst type;
-};
-
-template <>
-struct JsonVariantConstAs<JsonObject> {
-  typedef JsonObjectConst type;
-};
-
-template <>
-struct JsonVariantConstAs<JsonArray> {
-  typedef JsonArrayConst type;
-};
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Data/JsonVariantData.hpp

@@ -1,79 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include <stddef.h>  // ptrdiff_t, size_t
-
-#include "JsonFloat.hpp"
-#include "JsonInteger.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-enum JsonVariantType {
-  JSON_NULL,
-  JSON_LINKED_RAW,
-  JSON_OWNED_RAW,
-  JSON_LINKED_STRING,
-  JSON_OWNED_STRING,
-  JSON_BOOLEAN,
-  JSON_POSITIVE_INTEGER,
-  JSON_NEGATIVE_INTEGER,
-  JSON_ARRAY,
-  JSON_OBJECT,
-  JSON_FLOAT
-};
-
-struct JsonObjectData {
-  struct VariantSlot *head;
-  struct VariantSlot *tail;
-};
-
-struct JsonArrayData {
-  struct VariantSlot *head;
-  struct VariantSlot *tail;
-};
-
-struct RawData {
-  const char *data;
-  size_t size;
-};
-
-// A union that defines the actual content of a JsonVariantData.
-// The enum JsonVariantType determines which member is in use.
-union JsonVariantContent {
-  JsonFloat asFloat;
-  JsonUInt asInteger;
-  JsonArrayData asArray;
-  JsonObjectData asObject;
-  const char *asString;
-  struct {
-    const char *data;
-    size_t size;
-  } asRaw;
-};
-
-// this struct must be a POD type to prevent error calling offsetof on clang
-struct JsonVariantData {
-  bool keyIsOwned : 1;
-  JsonVariantType type : 7;
-  JsonVariantContent content;
-};
-
-inline JsonVariantData *getVariantData(JsonArrayData *arr) {
-  const ptrdiff_t offset = offsetof(JsonVariantData, content) -
-                           offsetof(JsonVariantContent, asArray);
-  if (!arr) return 0;
-  return reinterpret_cast<JsonVariantData *>(reinterpret_cast<char *>(arr) -
-                                             offset);
-}
-
-inline JsonVariantData *getVariantData(JsonObjectData *obj) {
-  const ptrdiff_t offset = offsetof(JsonVariantData, content) -
-                           offsetof(JsonVariantContent, asObject);
-  if (!obj) return 0;
-  return reinterpret_cast<JsonVariantData *>(reinterpret_cast<char *>(obj) -
-                                             offset);
-}
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Data/VariantAs.hpp

@@ -1,48 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "../Serialization/DynamicStringWriter.hpp"
-#include "VariantFunctions.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-class JsonVariantConst;
-
-template <typename T>
-inline typename enable_if<is_integral<T>::value, T>::type variantAs(
-    const JsonVariantData* _data) {
-  return variantAsIntegral<T>(_data);
-}
-
-template <typename T>
-inline typename enable_if<is_same<T, bool>::value, T>::type variantAs(
-    const JsonVariantData* _data) {
-  return variantAsBoolean(_data);
-}
-
-template <typename T>
-inline typename enable_if<is_floating_point<T>::value, T>::type variantAs(
-    const JsonVariantData* _data) {
-  return variantAsFloat<T>(_data);
-}
-
-template <typename T>
-inline typename enable_if<is_same<T, const char*>::value ||
-                              is_same<T, char*>::value,
-                          const char*>::type
-variantAs(const JsonVariantData* _data) {
-  return variantAsString(_data);
-}
-
-template <typename T>
-inline typename enable_if<is_same<JsonVariantConst, T>::value, T>::type
-variantAs(const JsonVariantData* _data);
-
-template <typename T>
-inline typename enable_if<IsWriteableString<T>::value, T>::type variantAs(
-    const JsonVariantData* _data);
-
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Deserialization/deserialize.hpp

@@ -33,7 +33,7 @@ deserialize(TDocument &doc, const TString &input) {
   return makeDeserializer<TDeserializer>(
              doc.memoryPool(), makeReader(input),
              makeStringStorage(doc.memoryPool(), input), doc.nestingLimit)
-      .parse(doc.template to<JsonVariant>());
+      .parse(doc.template to<VariantRef>());
 }
 //
 // DeserializationError deserialize(TDocument& doc, TChar* input);
@@ -45,7 +45,7 @@ DeserializationError deserialize(TDocument &doc, TChar *input) {
   return makeDeserializer<TDeserializer>(
              doc.memoryPool(), makeReader(input),
              makeStringStorage(doc.memoryPool(), input), doc.nestingLimit)
-      .parse(doc.template to<JsonVariant>());
+      .parse(doc.template to<VariantRef>());
 }
 //
 // DeserializationError deserialize(TDocument& doc, TChar* input, size_t
@@ -59,7 +59,7 @@ DeserializationError deserialize(TDocument &doc, TChar *input,
   return makeDeserializer<TDeserializer>(
              doc.memoryPool(), makeReader(input, inputSize),
              makeStringStorage(doc.memoryPool(), input), doc.nestingLimit)
-      .parse(doc.template to<JsonVariant>());
+      .parse(doc.template to<VariantRef>());
 }
 //
 // DeserializationError deserialize(TDocument& doc, TStream input);
@@ -71,6 +71,6 @@ DeserializationError deserialize(TDocument &doc, TStream &input) {
   return makeDeserializer<TDeserializer>(
              doc.memoryPool(), makeReader(input),
              makeStringStorage(doc.memoryPool(), input), doc.nestingLimit)
-      .parse(doc.template to<JsonVariant>());
+      .parse(doc.template to<VariantRef>());
 }
 }  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Document/JsonDocument.hpp

@@ -4,9 +4,9 @@
 
 #pragma once
 
-#include "Data/JsonVariantTo.hpp"
-#include "JsonVariant.hpp"
-#include "Memory/MemoryPool.hpp"
+#include "../Memory/MemoryPool.hpp"
+#include "../Variant/VariantRef.hpp"
+#include "../Variant/VariantTo.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -20,12 +20,12 @@ class JsonDocument : public Visitable {
   }
 
   template <typename T>
-  typename JsonVariantAs<T>::type as() {
+  typename VariantAs<T>::type as() {
     return getVariant().template as<T>();
   }
 
   template <typename T>
-  typename JsonVariantConstAs<T>::type as() const {
+  typename VariantConstAs<T>::type as() const {
     return getVariant().template as<T>();
   }
 
@@ -53,7 +53,7 @@ class JsonDocument : public Visitable {
   }
 
   template <typename T>
-  typename JsonVariantTo<T>::type to() {
+  typename VariantTo<T>::type to() {
     clear();
     return getVariant().template to<T>();
   }
@@ -65,20 +65,20 @@ class JsonDocument : public Visitable {
 
   void copy(const JsonDocument& src) {
     nestingLimit = src.nestingLimit;
-    to<JsonVariant>().set(src.as<JsonVariant>());
+    to<VariantRef>().set(src.as<VariantRef>());
   }
 
  private:
-  JsonVariant getVariant() {
-    return JsonVariant(&_memoryPool, &_rootData);
+  VariantRef getVariant() {
+    return VariantRef(&_memoryPool, &_rootData);
   }
 
-  JsonVariantConst getVariant() const {
-    return JsonVariantConst(&_rootData);
+  VariantConstRef getVariant() const {
+    return VariantConstRef(&_rootData);
   }
 
   MemoryPool _memoryPool;
-  JsonVariantData _rootData;
+  VariantData _rootData;
 };
 
 }  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Json/JsonDeserializer.hpp

@@ -5,12 +5,12 @@
 #pragma once
 
 #include "../Deserialization/deserialize.hpp"
-#include "../JsonVariant.hpp"
 #include "../Memory/MemoryPool.hpp"
 #include "../Numbers/isFloat.hpp"
 #include "../Numbers/isInteger.hpp"
 #include "../Polyfills/type_traits.hpp"
-#include "./EscapeSequence.hpp"
+#include "../Variant/VariantRef.hpp"
+#include "EscapeSequence.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -28,7 +28,7 @@ class JsonDeserializer {
         _stringStorage(stringStorage),
         _nestingLimit(nestingLimit),
         _loaded(false) {}
-  DeserializationError parse(JsonVariant variant) {
+  DeserializationError parse(VariantRef variant) {
     DeserializationError err = skipSpacesAndComments();
     if (err) return err;
 
@@ -68,10 +68,10 @@ class JsonDeserializer {
     return true;
   }
 
-  DeserializationError parseArray(JsonVariant variant) {
+  DeserializationError parseArray(VariantRef variant) {
     if (_nestingLimit == 0) return DeserializationError::TooDeep;
 
-    JsonArray array = variant.to<JsonArray>();
+    ArrayRef array = variant.to<ArrayRef>();
     if (array.isNull()) return DeserializationError::NoMemory;
 
     // Check opening braket
@@ -87,7 +87,7 @@ class JsonDeserializer {
     // Read each value
     for (;;) {
       // Allocate slot in array
-      JsonVariant value = array.add();
+      VariantRef value = array.add();
       if (value.isInvalid()) return DeserializationError::NoMemory;
 
       // 1 - Parse value
@@ -106,10 +106,10 @@ class JsonDeserializer {
     }
   }
 
-  DeserializationError parseObject(JsonVariant variant) {
+  DeserializationError parseObject(VariantRef variant) {
     if (_nestingLimit == 0) return DeserializationError::TooDeep;
 
-    JsonObject object = variant.to<JsonObject>();
+    ObjectRef object = variant.to<ObjectRef>();
     if (object.isNull()) return DeserializationError::NoMemory;
 
     // Check opening brace
@@ -135,7 +135,7 @@ class JsonDeserializer {
       if (!eat(':')) return DeserializationError::InvalidInput;
 
       // Allocate slot in object
-      JsonVariant value = object.set(key);
+      VariantRef value = object.set(key);
       if (value.isInvalid()) return DeserializationError::NoMemory;
 
       // Parse value
@@ -158,7 +158,7 @@ class JsonDeserializer {
     }
   }
 
-  DeserializationError parseValue(JsonVariant variant) {
+  DeserializationError parseValue(VariantRef variant) {
     if (isQuote(current())) {
       return parseStringValue(variant);
     } else {
@@ -174,7 +174,7 @@ class JsonDeserializer {
     }
   }
 
-  DeserializationError parseStringValue(JsonVariant variant) {
+  DeserializationError parseStringValue(VariantRef variant) {
     StringType value;
     DeserializationError err = parseQuotedString(value);
     if (err) return err;
@@ -233,7 +233,7 @@ class JsonDeserializer {
     return DeserializationError::Ok;
   }
 
-  DeserializationError parseNumericValue(JsonVariant result) {
+  DeserializationError parseNumericValue(VariantRef result) {
     char buffer[64];
     uint8_t n = 0;
 
@@ -246,9 +246,9 @@ class JsonDeserializer {
     buffer[n] = 0;
 
     if (isInteger(buffer)) {
-      result.set(parseInteger<JsonInteger>(buffer));
+      result.set(parseInteger<Integer>(buffer));
     } else if (isFloat(buffer)) {
-      result.set(parseFloat<JsonFloat>(buffer));
+      result.set(parseFloat<Float>(buffer));
     } else if (!strcmp(buffer, "true")) {
       result.set(true);
     } else if (!strcmp(buffer, "false")) {

src/ArduinoJson/Json/JsonSerializer.hpp

@@ -4,9 +4,9 @@
 
 #pragma once
 
+#include "../Misc/Visitable.hpp"
 #include "../Serialization/measure.hpp"
 #include "../Serialization/serialize.hpp"
-#include "../Visitable.hpp"
 #include "JsonWriter.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
@@ -16,14 +16,14 @@ class JsonSerializer {
  public:
   JsonSerializer(TWriter &writer) : _writer(writer) {}
 
-  void visitFloat(JsonFloat value) {
+  void visitFloat(Float value) {
     _writer.writeFloat(value);
   }
 
-  void visitArray(JsonArrayConst array) {
+  void visitArray(ArrayConstRef array) {
     _writer.beginArray();
 
-    JsonArrayConst::iterator it = array.begin();
+    ArrayConstRef::iterator it = array.begin();
     while (it != array.end()) {
       it->accept(*this);
 
@@ -36,10 +36,10 @@ class JsonSerializer {
     _writer.endArray();
   }
 
-  void visitObject(JsonObjectConst object) {
+  void visitObject(ObjectConstRef object) {
     _writer.beginObject();
 
-    JsonObjectConst::iterator it = object.begin();
+    ObjectConstRef::iterator it = object.begin();
     while (it != object.end()) {
       _writer.writeString(it->key());
       _writer.writeColon();
@@ -63,12 +63,12 @@ class JsonSerializer {
     for (size_t i = 0; i < n; i++) _writer.writeRaw(data[i]);
   }
 
-  void visitNegativeInteger(JsonUInt value) {
+  void visitNegativeInteger(UInt value) {
     _writer.writeRaw('-');
     _writer.writeInteger(value);
   }
 
-  void visitPositiveInteger(JsonUInt value) {
+  void visitPositiveInteger(UInt value) {
     _writer.writeInteger(value);
   }
 

src/ArduinoJson/Json/JsonWriter.hpp

@@ -6,10 +6,10 @@
 
 #include <stdint.h>
 #include <string.h>  // for strlen
-#include "../Data/JsonInteger.hpp"
 #include "../Numbers/FloatParts.hpp"
+#include "../Numbers/Integer.hpp"
 #include "../Polyfills/attributes.hpp"
-#include "./EscapeSequence.hpp"
+#include "EscapeSequence.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -71,8 +71,8 @@ class JsonWriter {
     }
   }
 
-  template <typename TFloat>
-  void writeFloat(TFloat value) {
+  template <typename T>
+  void writeFloat(T value) {
     if (isnan(value)) return writeRaw("NaN");
 
     if (value < 0.0) {
@@ -82,7 +82,7 @@ class JsonWriter {
 
     if (isinf(value)) return writeRaw("Infinity");
 
-    FloatParts<TFloat> parts(value);
+    FloatParts<T> parts(value);
 
     writeInteger(parts.integral);
     if (parts.decimalPlaces) writeDecimals(parts.decimal, parts.decimalPlaces);
@@ -98,8 +98,8 @@ class JsonWriter {
     }
   }
 
-  template <typename UInt>
-  void writeInteger(UInt value) {
+  template <typename T>
+  void writeInteger(T value) {
     char buffer[22];
     char *end = buffer + sizeof(buffer);
     char *begin = end;
@@ -107,7 +107,7 @@ class JsonWriter {
     // write the string in reverse order
     do {
       *--begin = char(value % 10 + '0');
-      value = UInt(value / 10);
+      value = T(value / 10);
     } while (value);
 
     // and dump it in the right order

src/ArduinoJson/JsonArrayImpl.hpp

@@ -1,19 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "JsonArray.hpp"
-#include "JsonObject.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-inline JsonArray JsonArray::createNestedArray() const {
-  return add().to<JsonArray>();
-}
-
-inline JsonObject JsonArray::createNestedObject() const {
-  return add().to<JsonObject>();
-}
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/JsonArrayIterator.hpp

@@ -1,122 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "Data/SlotFunctions.hpp"
-#include "JsonVariant.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-class JsonVariantPtr {
- public:
-  JsonVariantPtr(MemoryPool *memoryPool, JsonVariantData *data)
-      : _variant(memoryPool, data) {}
-
-  JsonVariant *operator->() {
-    return &_variant;
-  }
-
-  JsonVariant &operator*() {
-    return _variant;
-  }
-
- private:
-  JsonVariant _variant;
-};
-
-class JsonArrayIterator {
- public:
-  JsonArrayIterator() : _slot(0) {}
-  explicit JsonArrayIterator(MemoryPool *memoryPool, VariantSlot *slot)
-      : _memoryPool(memoryPool), _slot(slot) {}
-
-  JsonVariant operator*() const {
-    return JsonVariant(_memoryPool, &_slot->value);
-  }
-  JsonVariantPtr operator->() {
-    return JsonVariantPtr(_memoryPool, &_slot->value);
-  }
-
-  bool operator==(const JsonArrayIterator &other) const {
-    return _slot == other._slot;
-  }
-
-  bool operator!=(const JsonArrayIterator &other) const {
-    return _slot != other._slot;
-  }
-
-  JsonArrayIterator &operator++() {
-    _slot = _slot->getNext();
-    return *this;
-  }
-
-  JsonArrayIterator &operator+=(size_t distance) {
-    _slot = _slot->getNext(distance);
-    return *this;
-  }
-
-  VariantSlot *internal() {
-    return _slot;
-  }
-
- private:
-  MemoryPool *_memoryPool;
-  VariantSlot *_slot;
-};
-
-class JsonVariantConstPtr {
- public:
-  JsonVariantConstPtr(const JsonVariantData *data) : _variant(data) {}
-
-  JsonVariantConst *operator->() {
-    return &_variant;
-  }
-
-  JsonVariantConst &operator*() {
-    return _variant;
-  }
-
- private:
-  JsonVariantConst _variant;
-};
-
-class JsonArrayConstIterator {
- public:
-  JsonArrayConstIterator() : _slot(0) {}
-  explicit JsonArrayConstIterator(const VariantSlot *slot) : _slot(slot) {}
-
-  JsonVariantConst operator*() const {
-    return JsonVariantConst(&_slot->value);
-  }
-  JsonVariantConstPtr operator->() {
-    return JsonVariantConstPtr(&_slot->value);
-  }
-
-  bool operator==(const JsonArrayConstIterator &other) const {
-    return _slot == other._slot;
-  }
-
-  bool operator!=(const JsonArrayConstIterator &other) const {
-    return _slot != other._slot;
-  }
-
-  JsonArrayConstIterator &operator++() {
-    _slot = _slot->getNext();
-    return *this;
-  }
-
-  JsonArrayConstIterator &operator+=(size_t distance) {
-    _slot = _slot->getNext(distance);
-    return *this;
-  }
-
-  const VariantSlot *internal() {
-    return _slot;
-  }
-
- private:
-  const VariantSlot *_slot;
-};
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/JsonObjectImpl.hpp

@@ -1,21 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "JsonArray.hpp"
-#include "JsonObject.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-template <typename TString>
-inline JsonArray JsonObject::createNestedArray(const TString& key) const {
-  return set(key).template to<JsonArray>();
-}
-
-template <typename TString>
-inline JsonArray JsonObject::createNestedArray(TString* key) const {
-  return set(key).template to<JsonArray>();
-}
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/JsonObjectIterator.hpp

@@ -1,124 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "Data/SlotFunctions.hpp"
-#include "JsonPair.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-class JsonPairPtr {
- public:
-  JsonPairPtr(MemoryPool *memoryPool, VariantSlot *slot)
-      : _pair(memoryPool, slot) {}
-
-  const JsonPair *operator->() const {
-    return &_pair;
-  }
-
-  const JsonPair &operator*() const {
-    return _pair;
-  }
-
- private:
-  JsonPair _pair;
-};
-
-class JsonObjectIterator {
- public:
-  JsonObjectIterator() : _slot(0) {}
-
-  explicit JsonObjectIterator(MemoryPool *memoryPool, VariantSlot *slot)
-      : _memoryPool(memoryPool), _slot(slot) {}
-
-  JsonPair operator*() const {
-    return JsonPair(_memoryPool, _slot);
-  }
-  JsonPairPtr operator->() {
-    return JsonPairPtr(_memoryPool, _slot);
-  }
-
-  bool operator==(const JsonObjectIterator &other) const {
-    return _slot == other._slot;
-  }
-
-  bool operator!=(const JsonObjectIterator &other) const {
-    return _slot != other._slot;
-  }
-
-  JsonObjectIterator &operator++() {
-    _slot = _slot->getNext();
-    return *this;
-  }
-
-  JsonObjectIterator &operator+=(size_t distance) {
-    _slot = _slot->getNext(distance);
-    return *this;
-  }
-
-  VariantSlot *internal() {
-    return _slot;
-  }
-
- private:
-  MemoryPool *_memoryPool;
-  VariantSlot *_slot;
-};
-
-class JsonPairConstPtr {
- public:
-  JsonPairConstPtr(const VariantSlot *slot) : _pair(slot) {}
-
-  const JsonPairConst *operator->() const {
-    return &_pair;
-  }
-
-  const JsonPairConst &operator*() const {
-    return _pair;
-  }
-
- private:
-  JsonPairConst _pair;
-};
-
-class JsonObjectConstIterator {
- public:
-  JsonObjectConstIterator() : _slot(0) {}
-
-  explicit JsonObjectConstIterator(const VariantSlot *slot) : _slot(slot) {}
-
-  JsonPairConst operator*() const {
-    return JsonPairConst(_slot);
-  }
-  JsonPairConstPtr operator->() {
-    return JsonPairConstPtr(_slot);
-  }
-
-  bool operator==(const JsonObjectConstIterator &other) const {
-    return _slot == other._slot;
-  }
-
-  bool operator!=(const JsonObjectConstIterator &other) const {
-    return _slot != other._slot;
-  }
-
-  JsonObjectConstIterator &operator++() {
-    _slot = _slot->getNext();
-    return *this;
-  }
-
-  JsonObjectConstIterator &operator+=(size_t distance) {
-    _slot = _slot->getNext(distance);
-    return *this;
-  }
-
-  const VariantSlot *internal() {
-    return _slot;
-  }
-
- private:
-  const VariantSlot *_slot;
-};
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/JsonPair.hpp

@@ -1,53 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "JsonKey.hpp"
-#include "JsonVariant.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-// A key value pair for JsonObjectData.
-class JsonPair {
- public:
-  JsonPair(MemoryPool* memoryPool, VariantSlot* slot) : _key(slot) {
-    if (slot) {
-      _value = JsonVariant(memoryPool, &slot->value);
-    }
-  }
-
-  JsonKey key() const {
-    return _key;
-  }
-
-  JsonVariant value() const {
-    return _value;
-  }
-
- private:
-  JsonKey _key;
-  JsonVariant _value;
-};
-
-class JsonPairConst {
- public:
-  JsonPairConst(const VariantSlot* slot) : _key(slot) {
-    if (slot) {
-      _value = JsonVariantConst(&slot->value);
-    }
-  }
-
-  JsonKey key() const {
-    return _key;
-  }
-
-  JsonVariantConst value() const {
-    return _value;
-  }
-
- private:
-  JsonKey _key;
-  JsonVariantConst _value;
-};
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/JsonVariantBase.hpp

@@ -1,19 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "JsonVariantCasts.hpp"
-#include "JsonVariantComparisons.hpp"
-#include "JsonVariantOr.hpp"
-#include "JsonVariantSubscripts.hpp"
-
-namespace ARDUINOJSON_NAMESPACE {
-
-template <typename TImpl>
-class JsonVariantBase : public JsonVariantCasts<TImpl>,
-                        public JsonVariantComparisons<TImpl>,
-                        public JsonVariantOr<TImpl>,
-                        public JsonVariantSubscripts<TImpl> {};
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/JsonVariantImpl.hpp

@@ -1,118 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "Configuration.hpp"
-#include "JsonVariant.hpp"
-#include "Numbers/parseFloat.hpp"
-#include "Numbers/parseInteger.hpp"
-
-#include <string.h>  // for strcmp
-
-namespace ARDUINOJSON_NAMESPACE {
-
-inline bool JsonVariant::set(JsonArray array) const {
-  return to<JsonArray>().copyFrom(array);
-}
-
-inline bool JsonVariant::set(const JsonArraySubscript& value) const {
-  return set(value.as<JsonVariant>());
-}
-
-inline bool JsonVariant::set(JsonObject object) const {
-  return to<JsonObject>().copyFrom(object);
-}
-
-template <typename TString>
-inline bool JsonVariant::set(const JsonObjectSubscript<TString>& value) const {
-  return set(value.template as<JsonVariant>());
-}
-
-inline bool JsonVariant::set(JsonVariantConst value) const {
-  return variantCopy(_data, value._data, _memoryPool);
-}
-
-inline bool JsonVariant::set(JsonVariant value) const {
-  return variantCopy(_data, value._data, _memoryPool);
-}
-
-template <typename T>
-inline typename enable_if<is_same<T, JsonArray>::value, T>::type
-JsonVariant::as() const {
-  return JsonArray(_memoryPool, variantAsArray(_data));
-}
-
-template <typename T>
-inline typename enable_if<is_same<T, JsonObject>::value, T>::type
-JsonVariant::as() const {
-  return JsonObject(_memoryPool, variantAsObject(_data));
-}
-
-template <typename T>
-inline typename enable_if<is_same<T, JsonArray>::value, JsonArray>::type
-JsonVariant::to() const {
-  return JsonArray(_memoryPool, variantToArray(_data));
-}
-
-template <typename T>
-typename enable_if<is_same<T, JsonObject>::value, JsonObject>::type
-JsonVariant::to() const {
-  return JsonObject(_memoryPool, variantToObject(_data));
-}
-
-template <typename T>
-typename enable_if<is_same<T, JsonVariant>::value, JsonVariant>::type
-JsonVariant::to() const {
-  variantSetNull(_data);
-  return *this;
-}
-
-template <typename Visitor>
-inline void JsonVariant::accept(Visitor& visitor) const {
-  return JsonVariantConst(_data).accept(visitor);
-}
-
-template <typename Visitor>
-inline void JsonVariantConst::accept(Visitor& visitor) const {
-  if (!_data) return visitor.visitNull();
-
-  switch (_data->type) {
-    case JSON_FLOAT:
-      return visitor.visitFloat(_data->content.asFloat);
-
-    case JSON_ARRAY:
-      return visitor.visitArray(JsonArrayConst(&_data->content.asArray));
-
-    case JSON_OBJECT:
-      return visitor.visitObject(JsonObjectConst(&_data->content.asObject));
-
-    case JSON_LINKED_STRING:
-    case JSON_OWNED_STRING:
-      return visitor.visitString(_data->content.asString);
-
-    case JSON_OWNED_RAW:
-    case JSON_LINKED_RAW:
-      return visitor.visitRawJson(_data->content.asRaw.data,
-                                  _data->content.asRaw.size);
-
-    case JSON_NEGATIVE_INTEGER:
-      return visitor.visitNegativeInteger(_data->content.asInteger);
-
-    case JSON_POSITIVE_INTEGER:
-      return visitor.visitPositiveInteger(_data->content.asInteger);
-
-    case JSON_BOOLEAN:
-      return visitor.visitBoolean(_data->content.asInteger != 0);
-
-    default:
-      return visitor.visitNull();
-  }
-}
-
-inline JsonVariantConst JsonVariantConst::operator[](size_t index) const {
-  return JsonArrayConst(variantAsArray(_data))[index];
-}
-
-}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Memory/MemoryPool.hpp

@@ -7,10 +7,10 @@
 #include "../Polyfills/assert.hpp"
 #include "../Polyfills/mpl/max.hpp"
 #include "../Strings/StringInMemoryPool.hpp"
+#include "../Variant/VariantSlot.hpp"
 #include "Alignment.hpp"
 #include "MemoryPool.hpp"
 #include "StringSlot.hpp"
-#include "VariantSlot.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 

src/ArduinoJson/Misc/SerializedValue.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include "Strings/StringTypes.hpp"
+#include "../Strings/StringTypes.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 

src/ArduinoJson/Misc/Visitable.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include "Polyfills/type_traits.hpp"
+#include "../Polyfills/type_traits.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 

src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp

@@ -5,11 +5,11 @@
 #pragma once
 
 #include "../Deserialization/deserialize.hpp"
-#include "../JsonVariant.hpp"
 #include "../Memory/MemoryPool.hpp"
 #include "../Polyfills/type_traits.hpp"
-#include "./endianess.hpp"
-#include "./ieee754.hpp"
+#include "../Variant/VariantRef.hpp"
+#include "endianess.hpp"
+#include "ieee754.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -27,7 +27,7 @@ class MsgPackDeserializer {
         _stringStorage(stringStorage),
         _nestingLimit(nestingLimit) {}
 
-  DeserializationError parse(JsonVariant variant) {
+  DeserializationError parse(VariantRef variant) {
     uint8_t code;
     if (!readByte(code)) return DeserializationError::IncompleteInput;
 
@@ -174,7 +174,7 @@ class MsgPackDeserializer {
   }
 
   template <typename T>
-  DeserializationError readInteger(JsonVariant variant) {
+  DeserializationError readInteger(VariantRef variant) {
     T value;
     if (!readInteger(value)) return DeserializationError::IncompleteInput;
     variant.set(value);
@@ -183,7 +183,7 @@ class MsgPackDeserializer {
 
   template <typename T>
   typename enable_if<sizeof(T) == 4, DeserializationError>::type readFloat(
-      JsonVariant variant) {
+      VariantRef variant) {
     T value;
     if (!readBytes(value)) return DeserializationError::IncompleteInput;
     fixEndianess(value);
@@ -193,7 +193,7 @@ class MsgPackDeserializer {
 
   template <typename T>
   typename enable_if<sizeof(T) == 8, DeserializationError>::type readDouble(
-      JsonVariant variant) {
+      VariantRef variant) {
     T value;
     if (!readBytes(value)) return DeserializationError::IncompleteInput;
     fixEndianess(value);
@@ -203,7 +203,7 @@ class MsgPackDeserializer {
 
   template <typename T>
   typename enable_if<sizeof(T) == 4, DeserializationError>::type readDouble(
-      JsonVariant variant) {
+      VariantRef variant) {
     uint8_t i[8];  // input is 8 bytes
     T value;       // output is 4 bytes
     uint8_t *o = reinterpret_cast<uint8_t *>(&value);
@@ -215,7 +215,7 @@ class MsgPackDeserializer {
   }
 
   template <typename T>
-  DeserializationError readString(JsonVariant variant) {
+  DeserializationError readString(VariantRef variant) {
     T size;
     if (!readInteger(size)) return DeserializationError::IncompleteInput;
     return readString(variant, size);
@@ -228,7 +228,7 @@ class MsgPackDeserializer {
     return readString(str, size);
   }
 
-  DeserializationError readString(JsonVariant variant, size_t n) {
+  DeserializationError readString(VariantRef variant, size_t n) {
     StringType s;
     DeserializationError err = readString(s, n);
     if (!err) variant.set(s);
@@ -248,23 +248,23 @@ class MsgPackDeserializer {
   }
 
   template <typename TSize>
-  DeserializationError readArray(JsonVariant variant) {
+  DeserializationError readArray(VariantRef variant) {
     TSize size;
     if (!readInteger(size)) return DeserializationError::IncompleteInput;
     return readArray(variant, size);
   }
 
-  DeserializationError readArray(JsonVariant variant, size_t n) {
-    JsonArray array = variant.to<JsonArray>();
+  DeserializationError readArray(VariantRef variant, size_t n) {
+    ArrayRef array = variant.to<ArrayRef>();
     if (array.isNull()) return DeserializationError::NoMemory;
     return readArray(array, n);
   }
 
-  DeserializationError readArray(JsonArray array, size_t n) {
+  DeserializationError readArray(ArrayRef array, size_t n) {
     if (_nestingLimit == 0) return DeserializationError::TooDeep;
     --_nestingLimit;
     for (; n; --n) {
-      JsonVariant value = array.add();
+      VariantRef value = array.add();
       if (value.isInvalid()) return DeserializationError::NoMemory;
 
       DeserializationError err = parse(value);
@@ -275,20 +275,20 @@ class MsgPackDeserializer {
   }
 
   template <typename TSize>
-  DeserializationError readObject(JsonVariant variant) {
+  DeserializationError readObject(VariantRef variant) {
     TSize size;
     if (!readInteger(size)) return DeserializationError::IncompleteInput;
     return readObject(variant, size);
   }
 
-  DeserializationError readObject(JsonVariant variant, size_t n) {
-    JsonObject object = variant.to<JsonObject>();
+  DeserializationError readObject(VariantRef variant, size_t n) {
+    ObjectRef object = variant.to<ObjectRef>();
     if (object.isNull()) return DeserializationError::NoMemory;
 
     return readObject(object, n);
   }
 
-  DeserializationError readObject(JsonObject object, size_t n) {
+  DeserializationError readObject(ObjectRef object, size_t n) {
     if (_nestingLimit == 0) return DeserializationError::TooDeep;
     --_nestingLimit;
     for (; n; --n) {
@@ -296,7 +296,7 @@ class MsgPackDeserializer {
       DeserializationError err = parseKey(key);
       if (err) return err;
 
-      JsonVariant value = object.set(key);
+      VariantRef value = object.set(key);
       if (value.isInvalid()) return DeserializationError::NoMemory;
 
       err = parse(value);

src/ArduinoJson/MsgPack/MsgPackSerializer.hpp

@@ -4,11 +4,11 @@
 
 #pragma once
 
-#include "../JsonVariant.hpp"
 #include "../Polyfills/type_traits.hpp"
 #include "../Serialization/measure.hpp"
 #include "../Serialization/serialize.hpp"
-#include "./endianess.hpp"
+#include "../Variant/VariantRef.hpp"
+#include "endianess.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
@@ -35,7 +35,7 @@ class MsgPackSerializer {
     }
   }
 
-  void visitArray(JsonArrayConst array) {
+  void visitArray(ArrayConstRef array) {
     size_t n = array.size();
     if (n < 0x10) {
       writeByte(uint8_t(0x90 + array.size()));
@@ -46,12 +46,12 @@ class MsgPackSerializer {
       writeByte(0xDD);
       writeInteger(uint32_t(n));
     }
-    for (JsonArrayConst::iterator it = array.begin(); it != array.end(); ++it) {
+    for (ArrayConstRef::iterator it = array.begin(); it != array.end(); ++it) {
       it->accept(*this);
     }
   }
 
-  void visitObject(JsonObjectConst object) {
+  void visitObject(ObjectConstRef object) {
     size_t n = object.size();
     if (n < 0x10) {
       writeByte(uint8_t(0x80 + n));
@@ -62,7 +62,7 @@ class MsgPackSerializer {
       writeByte(0xDF);
       writeInteger(uint32_t(n));
     }
-    for (JsonObjectConst::iterator it = object.begin(); it != object.end();
+    for (ObjectConstRef::iterator it = object.begin(); it != object.end();
          ++it) {
       visitString(it->key());
       it->value().accept(*this);
@@ -93,8 +93,8 @@ class MsgPackSerializer {
     writeBytes(reinterpret_cast<const uint8_t*>(data), size);
   }
 
-  void visitNegativeInteger(JsonUInt value) {
-    JsonUInt negated = JsonUInt(~value + 1);
+  void visitNegativeInteger(UInt value) {
+    UInt negated = UInt(~value + 1);
     if (value <= 0x20) {
       writeInteger(int8_t(negated));
     } else if (value <= 0x80) {
@@ -115,7 +115,7 @@ class MsgPackSerializer {
 #endif
   }
 
-  void visitPositiveInteger(JsonUInt value) {
+  void visitPositiveInteger(UInt value) {
     if (value <= 0x7F) {
       writeInteger(uint8_t(value));
     } else if (value <= 0xFF) {

src/ArduinoJson/Numbers/Float.hpp

@@ -9,8 +9,8 @@
 namespace ARDUINOJSON_NAMESPACE {
 
 #if ARDUINOJSON_USE_DOUBLE
-typedef double JsonFloat;
+typedef double Float;
 #else
-typedef float JsonFloat;
+typedef float Float;
 #endif
 }  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Numbers/Integer.hpp

@@ -11,10 +11,10 @@
 namespace ARDUINOJSON_NAMESPACE {
 
 #if ARDUINOJSON_USE_LONG_LONG
-typedef int64_t JsonInteger;
-typedef uint64_t JsonUInt;
+typedef int64_t Integer;
+typedef uint64_t UInt;
 #else
-typedef long JsonInteger;
-typedef unsigned long JsonUInt;
+typedef long Integer;
+typedef unsigned long UInt;
 #endif
 }  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Object/Key.hpp

@@ -6,9 +6,9 @@
 
 namespace ARDUINOJSON_NAMESPACE {
 
-class JsonKey {
+class Key {
  public:
-  JsonKey(const VariantSlot* slot) : _slot(slot) {}
+  Key(const VariantSlot* slot) : _slot(slot) {}
 
   operator const char*() const {
     return c_str();
@@ -22,7 +22,7 @@ class JsonKey {
     return _slot == 0 || _slot->key == 0;
   }
 
-  friend bool operator==(JsonKey lhs, const char* rhs) {
+  friend bool operator==(Key lhs, const char* rhs) {
     if (lhs.isNull()) return rhs == 0;
     return rhs ? !strcmp(lhs, rhs) : false;
   }

src/ArduinoJson/Object/ObjectFunctions.hpp

@@ -5,13 +5,13 @@
 #pragma once
 
 #include "../Memory/MemoryPool.hpp"
-#include "JsonVariantData.hpp"
-#include "SlotFunctions.hpp"
+#include "../Variant/SlotFunctions.hpp"
+#include "../Variant/VariantData.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
 template <typename TKey>
-inline VariantSlot* objectFindSlot(const JsonObjectData* obj, TKey key) {
+inline VariantSlot* objectFindSlot(const ObjectData* obj, TKey key) {
   if (!obj) return 0;
   VariantSlot* slot = obj->head;
   while (slot) {
@@ -22,13 +22,12 @@ inline VariantSlot* objectFindSlot(const JsonObjectData* obj, TKey key) {
 }
 
 template <typename TKey>
-inline bool objectContainsKey(const JsonObjectData* obj, const TKey& key) {
+inline bool objectContainsKey(const ObjectData* obj, const TKey& key) {
   return objectFindSlot(obj, key) != 0;
 }
 
 template <typename TKey>
-inline JsonVariantData* objectAdd(JsonObjectData* obj, TKey key,
-                                  MemoryPool* pool) {
+inline VariantData* objectAdd(ObjectData* obj, TKey key, MemoryPool* pool) {
   VariantSlot* slot = pool->allocVariant();
   if (!slot) return 0;
 
@@ -49,8 +48,7 @@ inline JsonVariantData* objectAdd(JsonObjectData* obj, TKey key,
 }
 
 template <typename TKey>
-inline JsonVariantData* objectSet(JsonObjectData* obj, TKey key,
-                                  MemoryPool* pool) {
+inline VariantData* objectSet(ObjectData* obj, TKey key, MemoryPool* pool) {
   if (!obj) return 0;
 
   // ignore null key
@@ -64,18 +62,18 @@ inline JsonVariantData* objectSet(JsonObjectData* obj, TKey key,
 }
 
 template <typename TKey>
-inline JsonVariantData* objectGet(const JsonObjectData* obj, TKey key) {
+inline VariantData* objectGet(const ObjectData* obj, TKey key) {
   VariantSlot* slot = objectFindSlot(obj, key);
   return slot ? &slot->value : 0;
 }
 
-inline void objectClear(JsonObjectData* obj) {
+inline void objectClear(ObjectData* obj) {
   if (!obj) return;
   obj->head = 0;
   obj->tail = 0;
 }
 
-inline void objectRemove(JsonObjectData* obj, VariantSlot* slot) {
+inline void objectRemove(ObjectData* obj, VariantSlot* slot) {
   if (!obj) return;
   if (!slot) return;
   VariantSlot* prev = slot->getPrev();
@@ -90,19 +88,19 @@ inline void objectRemove(JsonObjectData* obj, VariantSlot* slot) {
     obj->tail = prev;
 }
 
-inline size_t objectSize(const JsonObjectData* obj) {
+inline size_t objectSize(const ObjectData* obj) {
   if (!obj) return 0;
   return slotSize(obj->head);
 }
 
-// bool variantCopy(JsonVariantData*, const JsonVariantData*, MemoryPool*);
+// bool variantCopy(VariantData*, const VariantData*, MemoryPool*);
 
-inline bool objectCopy(JsonObjectData* dst, const JsonObjectData* src,
+inline bool objectCopy(ObjectData* dst, const ObjectData* src,
                        MemoryPool* pool) {
   if (!dst || !src) return false;
   objectClear(dst);
   for (VariantSlot* s = src->head; s; s = s->getNext()) {
-    JsonVariantData* var;
+    VariantData* var;
     if (s->value.keyIsOwned)
       var = objectAdd(dst, ZeroTerminatedRamString(s->key), pool);
     else
@@ -112,13 +110,13 @@ inline bool objectCopy(JsonObjectData* dst, const JsonObjectData* src,
   return true;
 }
 
-inline bool objectEquals(const JsonObjectData* o1, const JsonObjectData* o2) {
+inline bool objectEquals(const ObjectData* o1, const ObjectData* o2) {
   if (o1 == o2) return true;
   if (!o1 || !o2) return false;
 
   for (VariantSlot* s = o1->head; s; s = s->getNext()) {
-    JsonVariantData* v1 = &s->value;
-    JsonVariantData* v2 = objectGet(o2, makeString(slotGetKey(s)));
+    VariantData* v1 = &s->value;
+    VariantData* v2 = objectGet(o2, makeString(slotGetKey(s)));
     if (!variantEquals(v1, v2)) return false;
   }
   return true;

src/ArduinoJson/Object/ObjectImpl.hpp

@@ -0,0 +1,21 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Array/ArrayRef.hpp"
+#include "ObjectRef.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+template <typename TString>
+inline ArrayRef ObjectRef::createNestedArray(const TString& key) const {
+  return set(key).template to<ArrayRef>();
+}
+
+template <typename TString>
+inline ArrayRef ObjectRef::createNestedArray(TString* key) const {
+  return set(key).template to<ArrayRef>();
+}
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Object/ObjectIterator.hpp

@@ -0,0 +1,124 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Variant/SlotFunctions.hpp"
+#include "Pair.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+class PairPtr {
+ public:
+  PairPtr(MemoryPool *memoryPool, VariantSlot *slot)
+      : _pair(memoryPool, slot) {}
+
+  const Pair *operator->() const {
+    return &_pair;
+  }
+
+  const Pair &operator*() const {
+    return _pair;
+  }
+
+ private:
+  Pair _pair;
+};
+
+class ObjectIterator {
+ public:
+  ObjectIterator() : _slot(0) {}
+
+  explicit ObjectIterator(MemoryPool *memoryPool, VariantSlot *slot)
+      : _memoryPool(memoryPool), _slot(slot) {}
+
+  Pair operator*() const {
+    return Pair(_memoryPool, _slot);
+  }
+  PairPtr operator->() {
+    return PairPtr(_memoryPool, _slot);
+  }
+
+  bool operator==(const ObjectIterator &other) const {
+    return _slot == other._slot;
+  }
+
+  bool operator!=(const ObjectIterator &other) const {
+    return _slot != other._slot;
+  }
+
+  ObjectIterator &operator++() {
+    _slot = _slot->getNext();
+    return *this;
+  }
+
+  ObjectIterator &operator+=(size_t distance) {
+    _slot = _slot->getNext(distance);
+    return *this;
+  }
+
+  VariantSlot *internal() {
+    return _slot;
+  }
+
+ private:
+  MemoryPool *_memoryPool;
+  VariantSlot *_slot;
+};
+
+class PairConstPtr {
+ public:
+  PairConstPtr(const VariantSlot *slot) : _pair(slot) {}
+
+  const PairConst *operator->() const {
+    return &_pair;
+  }
+
+  const PairConst &operator*() const {
+    return _pair;
+  }
+
+ private:
+  PairConst _pair;
+};
+
+class ObjectConstIterator {
+ public:
+  ObjectConstIterator() : _slot(0) {}
+
+  explicit ObjectConstIterator(const VariantSlot *slot) : _slot(slot) {}
+
+  PairConst operator*() const {
+    return PairConst(_slot);
+  }
+  PairConstPtr operator->() {
+    return PairConstPtr(_slot);
+  }
+
+  bool operator==(const ObjectConstIterator &other) const {
+    return _slot == other._slot;
+  }
+
+  bool operator!=(const ObjectConstIterator &other) const {
+    return _slot != other._slot;
+  }
+
+  ObjectConstIterator &operator++() {
+    _slot = _slot->getNext();
+    return *this;
+  }
+
+  ObjectConstIterator &operator+=(size_t distance) {
+    _slot = _slot->getNext(distance);
+    return *this;
+  }
+
+  const VariantSlot *internal() {
+    return _slot;
+  }
+
+ private:
+  const VariantSlot *_slot;
+};
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Object/ObjectRef.hpp

@@ -4,8 +4,8 @@
 
 #pragma once
 
-#include "Data/ObjectFunctions.hpp"
-#include "JsonObjectIterator.hpp"
+#include "ObjectFunctions.hpp"
+#include "ObjectIterator.hpp"
 
 // Returns the size (in bytes) of an object with n elements.
 // Can be very handy to determine the size of a StaticMemoryPool.
@@ -15,7 +15,7 @@
 namespace ARDUINOJSON_NAMESPACE {
 
 template <typename TData>
-class JsonObjectProxy {
+class ObjectRefBase {
  public:
   // Tells weither the specified key is present and associated with a value.
   //
@@ -42,20 +42,20 @@ class JsonObjectProxy {
   }
 
  protected:
-  JsonObjectProxy(TData* data) : _data(data) {}
+  ObjectRefBase(TData* data) : _data(data) {}
   TData* _data;
 };
 
-class JsonObjectConst : public JsonObjectProxy<const JsonObjectData>,
-                        public Visitable {
-  friend class JsonObject;
-  typedef JsonObjectProxy<const JsonObjectData> proxy_type;
+class ObjectConstRef : public ObjectRefBase<const ObjectData>,
+                       public Visitable {
+  friend class ObjectRef;
+  typedef ObjectRefBase<const ObjectData> base_type;
 
  public:
-  typedef JsonObjectConstIterator iterator;
+  typedef ObjectConstIterator iterator;
 
-  JsonObjectConst() : proxy_type(0) {}
-  JsonObjectConst(const JsonObjectData* data) : proxy_type(data) {}
+  ObjectConstRef() : base_type(0) {}
+  ObjectConstRef(const ObjectData* data) : base_type(data) {}
 
   template <typename Visitor>
   FORCE_INLINE void accept(Visitor& visitor) const {
@@ -79,66 +79,65 @@ class JsonObjectConst : public JsonObjectProxy<const JsonObjectData>,
   // TValue get<TValue>(TKey) const;
   // TKey = const std::string&, const String&
   // TValue = bool, char, long, int, short, float, double,
-  //          std::string, String, JsonArrayConst, JsonObjectConst
+  //          std::string, String, ArrayConstRef, ObjectConstRef
   template <typename TKey>
-  FORCE_INLINE JsonVariantConst get(const TKey& key) const {
+  FORCE_INLINE VariantConstRef get(const TKey& key) const {
     return get_impl(makeString(key));
   }
   //
   // TValue get<TValue>(TKey) const;
   // TKey = char*, const char*, const FlashStringHelper*
   // TValue = bool, char, long, int, short, float, double,
-  //          std::string, String, JsonArrayConst, JsonObjectConst
+  //          std::string, String, ArrayConstRef, ObjectConstRef
   template <typename TKey>
-  FORCE_INLINE JsonVariantConst get(TKey* key) const {
+  FORCE_INLINE VariantConstRef get(TKey* key) const {
     return get_impl(makeString(key));
   }
 
   //
-  // JsonVariantConst operator[](TKey) const;
+  // VariantConstRef operator[](TKey) const;
   // TKey = const std::string&, const String&
   template <typename TKey>
-  FORCE_INLINE typename enable_if<IsString<TKey>::value, JsonVariantConst>::type
+  FORCE_INLINE typename enable_if<IsString<TKey>::value, VariantConstRef>::type
   operator[](const TKey& key) const {
     return get_impl(makeString(key));
   }
   //
-  // JsonVariantConst operator[](TKey) const;
+  // VariantConstRef operator[](TKey) const;
   // TKey = const char*, const char[N], const FlashStringHelper*
   template <typename TKey>
-  FORCE_INLINE
-      typename enable_if<IsString<TKey*>::value, JsonVariantConst>::type
-      operator[](TKey* key) const {
+  FORCE_INLINE typename enable_if<IsString<TKey*>::value, VariantConstRef>::type
+  operator[](TKey* key) const {
     return get_impl(makeString(key));
   }
 
-  FORCE_INLINE bool operator==(JsonObjectConst rhs) const {
+  FORCE_INLINE bool operator==(ObjectConstRef rhs) const {
     return objectEquals(_data, rhs._data);
   }
 
  private:
   template <typename TKey>
-  FORCE_INLINE JsonVariantConst get_impl(TKey key) const {
-    return JsonVariantConst(objectGet(_data, key));
+  FORCE_INLINE VariantConstRef get_impl(TKey key) const {
+    return VariantConstRef(objectGet(_data, key));
   }
 };
 
-class JsonObject : public JsonObjectProxy<JsonObjectData>, public Visitable {
-  typedef JsonObjectProxy<JsonObjectData> proxy_type;
+class ObjectRef : public ObjectRefBase<ObjectData>, public Visitable {
+  typedef ObjectRefBase<ObjectData> base_type;
 
  public:
-  typedef JsonObjectIterator iterator;
+  typedef ObjectIterator iterator;
 
-  FORCE_INLINE JsonObject() : proxy_type(0), _memoryPool(0) {}
-  FORCE_INLINE JsonObject(MemoryPool* buf, JsonObjectData* data)
-      : proxy_type(data), _memoryPool(buf) {}
+  FORCE_INLINE ObjectRef() : base_type(0), _memoryPool(0) {}
+  FORCE_INLINE ObjectRef(MemoryPool* buf, ObjectData* data)
+      : base_type(data), _memoryPool(buf) {}
 
-  operator JsonVariant() const {
-    return JsonVariant(_memoryPool, getVariantData(_data));
+  operator VariantRef() const {
+    return VariantRef(_memoryPool, getVariantData(_data));
   }
 
-  operator JsonObjectConst() const {
-    return JsonObjectConst(_data);
+  operator ObjectConstRef() const {
+    return ObjectConstRef(_data);
   }
 
   FORCE_INLINE iterator begin() const {
@@ -154,35 +153,35 @@ class JsonObject : public JsonObjectProxy<JsonObjectData>, public Visitable {
     objectClear(_data);
   }
 
-  FORCE_INLINE bool copyFrom(JsonObjectConst src) {
+  FORCE_INLINE bool copyFrom(ObjectConstRef src) {
     return objectCopy(_data, src._data, _memoryPool);
   }
 
-  // Creates and adds a JsonArray.
+  // Creates and adds a ArrayRef.
   //
-  // JsonArray createNestedArray(TKey);
+  // ArrayRef createNestedArray(TKey);
   // TKey = const std::string&, const String&
   template <typename TKey>
-  FORCE_INLINE JsonArray createNestedArray(const TKey& key) const;
-  // JsonArray createNestedArray(TKey);
+  FORCE_INLINE ArrayRef createNestedArray(const TKey& key) const;
+  // ArrayRef createNestedArray(TKey);
   // TKey = char*, const char*, char[], const char[], const FlashStringHelper*
   template <typename TKey>
-  FORCE_INLINE JsonArray createNestedArray(TKey* key) const;
+  FORCE_INLINE ArrayRef createNestedArray(TKey* key) const;
 
-  // Creates and adds a JsonObject.
+  // Creates and adds a ObjectRef.
   //
-  // JsonObject createNestedObject(TKey);
+  // ObjectRef createNestedObject(TKey);
   // TKey = const std::string&, const String&
   template <typename TKey>
-  FORCE_INLINE JsonObject createNestedObject(const TKey& key) const {
-    return set(key).template to<JsonObject>();
+  FORCE_INLINE ObjectRef createNestedObject(const TKey& key) const {
+    return set(key).template to<ObjectRef>();
   }
   //
-  // JsonObject createNestedObject(TKey);
+  // ObjectRef createNestedObject(TKey);
   // TKey = char*, const char*, char[], const char[], const FlashStringHelper*
   template <typename TKey>
-  FORCE_INLINE JsonObject createNestedObject(TKey* key) const {
-    return set(key).template to<JsonObject>();
+  FORCE_INLINE ObjectRef createNestedObject(TKey* key) const {
+    return set(key).template to<ObjectRef>();
   }
 
   // Gets the value associated with the specified key.
@@ -190,39 +189,38 @@ class JsonObject : public JsonObjectProxy<JsonObjectData>, public Visitable {
   // TValue get<TValue>(TKey) const;
   // TKey = const std::string&, const String&
   // TValue = bool, char, long, int, short, float, double,
-  //          std::string, String, JsonArray, JsonObject
+  //          std::string, String, ArrayRef, ObjectRef
   template <typename TKey>
-  FORCE_INLINE JsonVariant get(const TKey& key) const {
+  FORCE_INLINE VariantRef get(const TKey& key) const {
     return get_impl(makeString(key));
   }
   //
   // TValue get<TValue>(TKey) const;
   // TKey = char*, const char*, const FlashStringHelper*
   // TValue = bool, char, long, int, short, float, double,
-  //          std::string, String, JsonArray, JsonObject
+  //          std::string, String, ArrayRef, ObjectRef
   template <typename TKey>
-  FORCE_INLINE JsonVariant get(TKey* key) const {
+  FORCE_INLINE VariantRef get(TKey* key) const {
     return get_impl(makeString(key));
   }
 
   // Gets or sets the value associated with the specified key.
   //
-  // JsonObjectSubscript operator[](TKey)
+  // ObjectSubscript operator[](TKey)
   // TKey = const std::string&, const String&
   template <typename TKey>
-  FORCE_INLINE JsonObjectSubscript<const TKey&> operator[](
-      const TKey& key) const {
-    return JsonObjectSubscript<const TKey&>(*this, key);
+  FORCE_INLINE ObjectSubscript<const TKey&> operator[](const TKey& key) const {
+    return ObjectSubscript<const TKey&>(*this, key);
   }
   //
-  // JsonObjectSubscript operator[](TKey)
+  // ObjectSubscript operator[](TKey)
   // TKey = char*, const char*, char[], const char[N], const FlashStringHelper*
   template <typename TKey>
-  FORCE_INLINE JsonObjectSubscript<TKey*> operator[](TKey* key) const {
-    return JsonObjectSubscript<TKey*>(*this, key);
+  FORCE_INLINE ObjectSubscript<TKey*> operator[](TKey* key) const {
+    return ObjectSubscript<TKey*>(*this, key);
   }
 
-  FORCE_INLINE bool operator==(JsonObject rhs) const {
+  FORCE_INLINE bool operator==(ObjectRef rhs) const {
     return objectEquals(_data, rhs._data);
   }
 
@@ -247,37 +245,37 @@ class JsonObject : public JsonObjectProxy<JsonObjectData>, public Visitable {
   }
 
   template <typename TKey>
-  FORCE_INLINE JsonVariant set(TKey* key) const {
+  FORCE_INLINE VariantRef set(TKey* key) const {
     return set_impl(makeString(key));
   }
 
   template <typename TKey>
-  FORCE_INLINE JsonVariant set(const TKey& key) const {
+  FORCE_INLINE VariantRef set(const TKey& key) const {
     return set_impl(makeString(key));
   }
 
-  FORCE_INLINE JsonVariant set(StringInMemoryPool key) const {
+  FORCE_INLINE VariantRef set(StringInMemoryPool key) const {
     return set_impl(key);
   }
 
-  FORCE_INLINE JsonVariant set(ZeroTerminatedRamStringConst key) const {
+  FORCE_INLINE VariantRef set(ZeroTerminatedRamStringConst key) const {
     return set_impl(key);
   }
 
   template <typename Visitor>
   FORCE_INLINE void accept(Visitor& visitor) const {
-    JsonObjectConst(_data).accept(visitor);
+    ObjectConstRef(_data).accept(visitor);
   }
 
  private:
   template <typename TStringRef>
-  FORCE_INLINE JsonVariant get_impl(TStringRef key) const {
-    return JsonVariant(_memoryPool, objectGet(_data, key));
+  FORCE_INLINE VariantRef get_impl(TStringRef key) const {
+    return VariantRef(_memoryPool, objectGet(_data, key));
   }
 
   template <typename TKey>
-  FORCE_INLINE JsonVariant set_impl(TKey key) const {
-    return JsonVariant(_memoryPool, objectSet(_data, key, _memoryPool));
+  FORCE_INLINE VariantRef set_impl(TKey key) const {
+    return VariantRef(_memoryPool, objectSet(_data, key, _memoryPool));
   }
 
   template <typename TStringRef>

src/ArduinoJson/Object/ObjectSubscript.hpp

@@ -4,9 +4,9 @@
 
 #pragma once
 
-#include "Configuration.hpp"
-#include "JsonVariantBase.hpp"
-#include "Polyfills/type_traits.hpp"
+#include "../Configuration.hpp"
+#include "../Operators/VariantOperators.hpp"
+#include "../Polyfills/type_traits.hpp"
 
 #ifdef _MSC_VER
 #pragma warning(push)
@@ -16,16 +16,15 @@
 namespace ARDUINOJSON_NAMESPACE {
 
 template <typename TStringRef>
-class JsonObjectSubscript
-    : public JsonVariantBase<JsonObjectSubscript<TStringRef> >,
-      public Visitable {
-  typedef JsonObjectSubscript<TStringRef> this_type;
+class ObjectSubscript : public VariantOperators<ObjectSubscript<TStringRef> >,
+                        public Visitable {
+  typedef ObjectSubscript<TStringRef> this_type;
 
  public:
-  FORCE_INLINE JsonObjectSubscript(JsonObject object, TStringRef key)
+  FORCE_INLINE ObjectSubscript(ObjectRef object, TStringRef key)
       : _object(object), _key(key) {}
 
-  operator JsonVariantConst() const {
+  operator VariantConstRef() const {
     return get_impl();
   }
 
@@ -38,7 +37,7 @@ class JsonObjectSubscript
   //
   // operator=(const TValue&);
   // TValue = bool, char, long, int, short, float, double,
-  //          std::string, String, JsonArray, JsonObject
+  //          std::string, String, ArrayRef, ObjectRef
   template <typename TValue>
   FORCE_INLINE typename enable_if<!is_array<TValue>::value, this_type &>::type
   operator=(const TValue &src) {
@@ -59,7 +58,7 @@ class JsonObjectSubscript
   }
 
   template <typename TValue>
-  FORCE_INLINE typename JsonVariantAs<TValue>::type as() const {
+  FORCE_INLINE typename VariantAs<TValue>::type as() const {
     return get_impl().template as<TValue>();
   }
 
@@ -69,7 +68,7 @@ class JsonObjectSubscript
   }
 
   template <typename TValue>
-  FORCE_INLINE typename JsonVariantTo<TValue>::type to() {
+  FORCE_INLINE typename VariantTo<TValue>::type to() {
     return set_impl().template to<TValue>();
   }
 
@@ -77,8 +76,8 @@ class JsonObjectSubscript
   //
   // bool set(const TValue&);
   // TValue = bool, char, long, int, short, float, double, serialized,
-  // JsonVariant,
-  //          std::string, String, JsonArray, JsonObject
+  // VariantRef,
+  //          std::string, String, ArrayRef, ObjectRef
   template <typename TValue>
   FORCE_INLINE typename enable_if<!is_array<TValue>::value, bool>::type set(
       const TValue &value) {
@@ -98,32 +97,32 @@ class JsonObjectSubscript
   }
 
  private:
-  FORCE_INLINE JsonVariant get_impl() const {
+  FORCE_INLINE VariantRef get_impl() const {
     return _object.get(_key);
   }
 
-  FORCE_INLINE JsonVariant set_impl() const {
+  FORCE_INLINE VariantRef set_impl() const {
     return _object.set(_key);
   }
 
-  JsonObject _object;
+  ObjectRef _object;
   TStringRef _key;
 };
 
 template <typename TImpl>
 template <typename TString>
 inline typename enable_if<IsString<TString>::value,
-                          JsonObjectSubscript<const TString &> >::type
-    JsonVariantSubscripts<TImpl>::operator[](const TString &key) const {
-  return impl()->template as<JsonObject>()[key];
+                          ObjectSubscript<const TString &> >::type
+    VariantSubscripts<TImpl>::operator[](const TString &key) const {
+  return impl()->template as<ObjectRef>()[key];
 }
 
 template <typename TImpl>
 template <typename TString>
 inline typename enable_if<IsString<TString *>::value,
-                          JsonObjectSubscript<TString *> >::type
-    JsonVariantSubscripts<TImpl>::operator[](TString *key) const {
-  return impl()->template as<JsonObject>()[key];
+                          ObjectSubscript<TString *> >::type
+    VariantSubscripts<TImpl>::operator[](TString *key) const {
+  return impl()->template as<ObjectRef>()[key];
 }
 
 }  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Object/Pair.hpp

@@ -0,0 +1,53 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Variant/VariantRef.hpp"
+#include "Key.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+// A key value pair for ObjectData.
+class Pair {
+ public:
+  Pair(MemoryPool* memoryPool, VariantSlot* slot) : _key(slot) {
+    if (slot) {
+      _value = VariantRef(memoryPool, &slot->value);
+    }
+  }
+
+  Key key() const {
+    return _key;
+  }
+
+  VariantRef value() const {
+    return _value;
+  }
+
+ private:
+  Key _key;
+  VariantRef _value;
+};
+
+class PairConst {
+ public:
+  PairConst(const VariantSlot* slot) : _key(slot) {
+    if (slot) {
+      _value = VariantConstRef(&slot->value);
+    }
+  }
+
+  Key key() const {
+    return _key;
+  }
+
+  VariantConstRef value() const {
+    return _value;
+  }
+
+ private:
+  Key _key;
+  VariantConstRef _value;
+};
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Operators/VariantCasts.hpp

@@ -4,13 +4,12 @@
 
 #pragma once
 
-#include "Data/JsonVariantAs.hpp"
-#include "Polyfills/attributes.hpp"
+#include "../Polyfills/attributes.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
 template <typename TImpl>
-class JsonVariantCasts {
+class VariantCasts {
  public:
   template <typename T>
   FORCE_INLINE operator T() const {

src/ArduinoJson/Operators/VariantComparisons.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include "JsonVariant.hpp"
+#include "../Variant/VariantRef.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 template <typename T>
@@ -15,7 +15,7 @@ struct is_simple_value {
 };
 
 template <typename TVariant>
-class JsonVariantComparisons {
+class VariantComparisons {
  public:
   // const char* == TVariant
   template <typename T>

src/ArduinoJson/Operators/VariantOperators.hpp

@@ -0,0 +1,19 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "VariantCasts.hpp"
+#include "VariantComparisons.hpp"
+#include "VariantOr.hpp"
+#include "VariantSubscripts.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+template <typename TImpl>
+class VariantOperators : public VariantCasts<TImpl>,
+                         public VariantComparisons<TImpl>,
+                         public VariantOr<TImpl>,
+                         public VariantSubscripts<TImpl> {};
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Operators/VariantOr.hpp

@@ -4,16 +4,16 @@
 
 #pragma once
 
-#include "Data/JsonVariantAs.hpp"
-#include "Polyfills/attributes.hpp"
-#include "Polyfills/type_traits.hpp"
+#include "../Polyfills/attributes.hpp"
+#include "../Polyfills/type_traits.hpp"
+#include "../Variant/VariantAs.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
 template <typename TImpl>
-class JsonVariantOr {
+class VariantOr {
  public:
-  // Returns the default value if the JsonVariant is undefined of incompatible
+  // Returns the default value if the VariantRef is undefined of incompatible
   template <typename T>
   typename enable_if<!is_integral<T>::value, T>::type operator|(
       const T &defaultValue) const {
@@ -23,14 +23,14 @@ class JsonVariantOr {
       return defaultValue;
   }
 
-  // Returns the default value if the JsonVariant is undefined of incompatible
+  // Returns the default value if the VariantRef is undefined of incompatible
   // Special case for string: null is treated as undefined
   const char *operator|(const char *defaultValue) const {
     const char *value = impl()->template as<const char *>();
     return value ? value : defaultValue;
   }
 
-  // Returns the default value if the JsonVariant is undefined of incompatible
+  // Returns the default value if the VariantRef is undefined of incompatible
   // Special case for integers: we also accept double
   template <typename Integer>
   typename enable_if<is_integral<Integer>::value, Integer>::type operator|(

src/ArduinoJson/Operators/VariantSubscripts.hpp

@@ -4,43 +4,43 @@
 
 #pragma once
 
-#include "Data/JsonVariantAs.hpp"
-#include "Polyfills/attributes.hpp"
-#include "Polyfills/type_traits.hpp"
-#include "Strings/StringTypes.hpp"
+#include "../Polyfills/attributes.hpp"
+#include "../Polyfills/type_traits.hpp"
+#include "../Strings/StringTypes.hpp"
+#include "../Variant/VariantAs.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
-class JsonArray;
-class JsonObject;
+class ArrayRef;
+class ObjectRef;
 
 // Forward declarations.
-class JsonArraySubscript;
+class ArraySubscript;
 template <typename TKey>
-class JsonObjectSubscript;
+class ObjectSubscript;
 
 template <typename TImpl>
-class JsonVariantSubscripts {
+class VariantSubscripts {
  public:
   // Mimics an array.
   // Returns the element at specified index if the variant is an array.
-  FORCE_INLINE JsonArraySubscript operator[](size_t index) const;
+  FORCE_INLINE ArraySubscript operator[](size_t index) const;
 
   // Mimics an object.
   // Returns the value associated with the specified key if the variant is
   // an object.
   //
-  // JsonObjectSubscript operator[](TKey) const;
+  // ObjectSubscript operator[](TKey) const;
   // TKey = const std::string&, const String&
   template <typename TString>
   FORCE_INLINE typename enable_if<IsString<TString>::value,
-                                  JsonObjectSubscript<const TString &> >::type
+                                  ObjectSubscript<const TString &> >::type
   operator[](const TString &key) const;
   //
-  // JsonObjectSubscript operator[](TKey) const;
+  // ObjectSubscript operator[](TKey) const;
   // TKey = const char*, const char[N], const FlashStringHelper*
   template <typename TString>
   FORCE_INLINE typename enable_if<IsString<TString *>::value,
-                                  JsonObjectSubscript<TString *> >::type
+                                  ObjectSubscript<TString *> >::type
   operator[](TString *key) const;
 
  private:

src/ArduinoJson/Variant/SlotFunctions.hpp

@@ -7,7 +7,7 @@
 #include "../Memory/MemoryPool.hpp"
 #include "../Polyfills/assert.hpp"
 #include "../Strings/StringTypes.hpp"
-#include "JsonVariantData.hpp"
+#include "VariantData.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 

src/ArduinoJson/Variant/VariantAs.hpp

@@ -0,0 +1,89 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Serialization/DynamicStringWriter.hpp"
+#include "VariantFunctions.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+class ArrayRef;
+class ArrayConstRef;
+class ObjectRef;
+class ObjectConstRef;
+class VariantRef;
+class VariantConstRef;
+
+// A metafunction that returns the type of the value returned by
+// VariantRef::as<T>()
+template <typename T>
+struct VariantAs {
+  typedef T type;
+};
+
+template <>
+struct VariantAs<char*> {
+  typedef const char* type;
+};
+
+// A metafunction that returns the type of the value returned by
+// VariantRef::as<T>()
+template <typename T>
+struct VariantConstAs {
+  typedef typename VariantAs<T>::type type;
+};
+
+template <>
+struct VariantConstAs<VariantRef> {
+  typedef VariantConstRef type;
+};
+
+template <>
+struct VariantConstAs<ObjectRef> {
+  typedef ObjectConstRef type;
+};
+
+template <>
+struct VariantConstAs<ArrayRef> {
+  typedef ArrayConstRef type;
+};
+
+// ---
+
+template <typename T>
+inline typename enable_if<is_integral<T>::value, T>::type variantAs(
+    const VariantData* _data) {
+  return variantAsIntegral<T>(_data);
+}
+
+template <typename T>
+inline typename enable_if<is_same<T, bool>::value, T>::type variantAs(
+    const VariantData* _data) {
+  return variantAsBoolean(_data);
+}
+
+template <typename T>
+inline typename enable_if<is_floating_point<T>::value, T>::type variantAs(
+    const VariantData* _data) {
+  return variantAsFloat<T>(_data);
+}
+
+template <typename T>
+inline typename enable_if<is_same<T, const char*>::value ||
+                              is_same<T, char*>::value,
+                          const char*>::type
+variantAs(const VariantData* _data) {
+  return variantAsString(_data);
+}
+
+template <typename T>
+inline typename enable_if<is_same<VariantConstRef, T>::value, T>::type
+variantAs(const VariantData* _data);
+
+template <typename T>
+inline typename enable_if<IsWriteableString<T>::value, T>::type variantAs(
+    const VariantData* _data);
+
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Variant/VariantAsImpl.hpp

@@ -4,25 +4,25 @@
 
 #pragma once
 
-#include "../JsonVariant.hpp"
 #include "../Serialization/DynamicStringWriter.hpp"
 #include "VariantFunctions.hpp"
+#include "VariantRef.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
 template <typename T>
-inline typename enable_if<is_same<JsonVariantConst, T>::value, T>::type
-variantAs(const JsonVariantData* _data) {
-  return JsonVariantConst(_data);
+inline typename enable_if<is_same<VariantConstRef, T>::value, T>::type
+variantAs(const VariantData* _data) {
+  return VariantConstRef(_data);
 }
 
 template <typename T>
 inline typename enable_if<IsWriteableString<T>::value, T>::type variantAs(
-    const JsonVariantData* _data) {
+    const VariantData* _data) {
   const char* cstr = variantAsString(_data);
   if (cstr) return T(cstr);
   T s;
-  serializeJson(JsonVariantConst(_data), s);
+  serializeJson(VariantConstRef(_data), s);
   return s;
 }
 

src/ArduinoJson/Variant/VariantData.hpp

@@ -0,0 +1,79 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include <stddef.h>  // ptrdiff_t, size_t
+
+#include "../Numbers/Float.hpp"
+#include "../Numbers/Integer.hpp"
+
+namespace ARDUINOJSON_NAMESPACE {
+
+enum VariantType {
+  JSON_NULL,
+  JSON_LINKED_RAW,
+  JSON_OWNED_RAW,
+  JSON_LINKED_STRING,
+  JSON_OWNED_STRING,
+  JSON_BOOLEAN,
+  JSON_POSITIVE_INTEGER,
+  JSON_NEGATIVE_INTEGER,
+  JSON_ARRAY,
+  JSON_OBJECT,
+  JSON_FLOAT
+};
+
+struct ObjectData {
+  struct VariantSlot *head;
+  struct VariantSlot *tail;
+};
+
+struct ArrayData {
+  struct VariantSlot *head;
+  struct VariantSlot *tail;
+};
+
+struct RawData {
+  const char *data;
+  size_t size;
+};
+
+// A union that defines the actual content of a VariantData.
+// The enum VariantType determines which member is in use.
+union VariantContent {
+  Float asFloat;
+  UInt asInteger;
+  ArrayData asArray;
+  ObjectData asObject;
+  const char *asString;
+  struct {
+    const char *data;
+    size_t size;
+  } asRaw;
+};
+
+// this struct must be a POD type to prevent error calling offsetof on clang
+struct VariantData {
+  bool keyIsOwned : 1;
+  VariantType type : 7;
+  VariantContent content;
+};
+
+inline VariantData *getVariantData(ArrayData *arr) {
+  const ptrdiff_t offset =
+      offsetof(VariantData, content) - offsetof(VariantContent, asArray);
+  if (!arr) return 0;
+  return reinterpret_cast<VariantData *>(reinterpret_cast<char *>(arr) -
+                                         offset);
+}
+
+inline VariantData *getVariantData(ObjectData *obj) {
+  const ptrdiff_t offset =
+      offsetof(VariantData, content) - offsetof(VariantContent, asObject);
+  if (!obj) return 0;
+  return reinterpret_cast<VariantData *>(reinterpret_cast<char *>(obj) -
+                                         offset);
+}
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Variant/VariantFunctions.hpp

@@ -4,16 +4,16 @@
 
 #pragma once
 
+#include "../Array/ArrayFunctions.hpp"
+#include "../Misc/SerializedValue.hpp"
 #include "../Numbers/parseFloat.hpp"
 #include "../Numbers/parseInteger.hpp"
-#include "../SerializedValue.hpp"
-#include "ArrayFunctions.hpp"
-#include "JsonVariantData.hpp"
-#include "ObjectFunctions.hpp"
+#include "../Object/ObjectFunctions.hpp"
+#include "VariantData.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 template <typename T>
-inline T variantAsIntegral(const JsonVariantData* var) {
+inline T variantAsIntegral(const VariantData* var) {
   if (!var) return 0;
   switch (var->type) {
     case JSON_POSITIVE_INTEGER:
@@ -31,13 +31,13 @@ inline T variantAsIntegral(const JsonVariantData* var) {
   }
 }
 
-inline bool variantAsBoolean(const JsonVariantData* var) {
+inline bool variantAsBoolean(const VariantData* var) {
   return variantAsIntegral<int>(var) != 0;
 }
 
 // T = float/double
 template <typename T>
-inline T variantAsFloat(const JsonVariantData* var) {
+inline T variantAsFloat(const VariantData* var) {
   if (!var) return 0;
   switch (var->type) {
     case JSON_POSITIVE_INTEGER:
@@ -55,7 +55,7 @@ inline T variantAsFloat(const JsonVariantData* var) {
   }
 }
 
-inline const char* variantAsString(const JsonVariantData* var) {
+inline const char* variantAsString(const VariantData* var) {
   if (!var) return 0;
   switch (var->type) {
     case JSON_LINKED_STRING:
@@ -66,42 +66,42 @@ inline const char* variantAsString(const JsonVariantData* var) {
   }
 }
 
-inline JsonArrayData* variantAsArray(JsonVariantData* var) {
+inline ArrayData* variantAsArray(VariantData* var) {
   if (var && var->type == JSON_ARRAY)
     return &var->content.asArray;
   else
     return 0;
 }
 
-inline const JsonArrayData* variantAsArray(const JsonVariantData* var) {
+inline const ArrayData* variantAsArray(const VariantData* var) {
   if (var && var->type == JSON_ARRAY)
     return &var->content.asArray;
   else
     return 0;
 }
 
-inline JsonObjectData* variantAsObject(JsonVariantData* var) {
+inline ObjectData* variantAsObject(VariantData* var) {
   if (var && var->type == JSON_OBJECT)
     return &var->content.asObject;
   else
     return 0;
 }
 
-inline const JsonObjectData* variantAsObject(const JsonVariantData* var) {
+inline const ObjectData* variantAsObject(const VariantData* var) {
   if (var && var->type == JSON_OBJECT)
     return &var->content.asObject;
   else
     return 0;
 }
 
-inline bool variantSetBoolean(JsonVariantData* var, bool value) {
+inline bool variantSetBoolean(VariantData* var, bool value) {
   if (!var) return false;
   var->type = JSON_BOOLEAN;
-  var->content.asInteger = static_cast<JsonUInt>(value);
+  var->content.asInteger = static_cast<UInt>(value);
   return true;
 }
 
-inline bool variantSetFloat(JsonVariantData* var, JsonFloat value) {
+inline bool variantSetFloat(VariantData* var, Float value) {
   if (!var) return false;
   var->type = JSON_FLOAT;
   var->content.asFloat = value;
@@ -109,26 +109,26 @@ inline bool variantSetFloat(JsonVariantData* var, JsonFloat value) {
 }
 
 template <typename T>
-inline bool variantSetSignedInteger(JsonVariantData* var, T value) {
+inline bool variantSetSignedInteger(VariantData* var, T value) {
   if (!var) return false;
   if (value >= 0) {
     var->type = JSON_POSITIVE_INTEGER;
-    var->content.asInteger = static_cast<JsonUInt>(value);
+    var->content.asInteger = static_cast<UInt>(value);
   } else {
     var->type = JSON_NEGATIVE_INTEGER;
-    var->content.asInteger = ~static_cast<JsonUInt>(value) + 1;
+    var->content.asInteger = ~static_cast<UInt>(value) + 1;
   }
   return true;
 }
 
-inline bool variantSetUnsignedInteger(JsonVariantData* var, JsonUInt value) {
+inline bool variantSetUnsignedInteger(VariantData* var, UInt value) {
   if (!var) return false;
   var->type = JSON_POSITIVE_INTEGER;
-  var->content.asInteger = static_cast<JsonUInt>(value);
+  var->content.asInteger = static_cast<UInt>(value);
   return true;
 }
 
-inline bool variantSetLinkedRaw(JsonVariantData* var,
+inline bool variantSetLinkedRaw(VariantData* var,
                                 SerializedValue<const char*> value) {
   if (!var) return false;
   var->type = JSON_LINKED_RAW;
@@ -138,7 +138,7 @@ inline bool variantSetLinkedRaw(JsonVariantData* var,
 }
 
 template <typename T>
-inline bool variantSetOwnedRaw(JsonVariantData* var, SerializedValue<T> value,
+inline bool variantSetOwnedRaw(VariantData* var, SerializedValue<T> value,
                                MemoryPool* pool) {
   if (!var) return false;
   char* dup = makeString(value.data(), value.size()).save(pool);
@@ -154,7 +154,7 @@ inline bool variantSetOwnedRaw(JsonVariantData* var, SerializedValue<T> value,
 }
 
 template <typename T>
-inline bool variantSetString(JsonVariantData* var, T value, MemoryPool* pool) {
+inline bool variantSetString(VariantData* var, T value, MemoryPool* pool) {
   if (!var) return false;
   char* dup = value.save(pool);
   if (dup) {
@@ -167,26 +167,26 @@ inline bool variantSetString(JsonVariantData* var, T value, MemoryPool* pool) {
   }
 }
 
-inline bool variantSetOwnedString(JsonVariantData* var, char* s) {
+inline bool variantSetOwnedString(VariantData* var, char* s) {
   if (!var) return false;
   var->type = JSON_OWNED_STRING;
   var->content.asString = s;
   return true;
 }
 
-inline bool variantSetString(JsonVariantData* var, const char* value) {
+inline bool variantSetString(VariantData* var, const char* value) {
   if (!var) return false;
   var->type = JSON_LINKED_STRING;
   var->content.asString = value;
   return true;
 }
 
-inline void variantSetNull(JsonVariantData* var) {
+inline void variantSetNull(VariantData* var) {
   if (!var) return;
   var->type = JSON_NULL;
 }
 
-inline JsonArrayData* variantToArray(JsonVariantData* var) {
+inline ArrayData* variantToArray(VariantData* var) {
   if (!var) return 0;
   var->type = JSON_ARRAY;
   var->content.asArray.head = 0;
@@ -194,7 +194,7 @@ inline JsonArrayData* variantToArray(JsonVariantData* var) {
   return &var->content.asArray;
 }
 
-inline JsonObjectData* variantToObject(JsonVariantData* var) {
+inline ObjectData* variantToObject(VariantData* var) {
   if (!var) return 0;
   var->type = JSON_OBJECT;
   var->content.asObject.head = 0;
@@ -202,7 +202,7 @@ inline JsonObjectData* variantToObject(JsonVariantData* var) {
   return &var->content.asObject;
 }
 
-inline bool variantCopy(JsonVariantData* dst, const JsonVariantData* src,
+inline bool variantCopy(VariantData* dst, const VariantData* src,
                         MemoryPool* pool) {
   if (!dst) return false;
   if (!src) {
@@ -229,35 +229,35 @@ inline bool variantCopy(JsonVariantData* dst, const JsonVariantData* src,
   }
 }
 
-inline bool variantIsInteger(const JsonVariantData* var) {
+inline bool variantIsInteger(const VariantData* var) {
   return var && (var->type == JSON_POSITIVE_INTEGER ||
                  var->type == JSON_NEGATIVE_INTEGER);
 }
 
-inline bool variantIsFloat(const JsonVariantData* var) {
+inline bool variantIsFloat(const VariantData* var) {
   return var &&
          (var->type == JSON_FLOAT || var->type == JSON_POSITIVE_INTEGER ||
           var->type == JSON_NEGATIVE_INTEGER);
 }
 
-inline bool variantIsString(const JsonVariantData* var) {
+inline bool variantIsString(const VariantData* var) {
   return var &&
          (var->type == JSON_LINKED_STRING || var->type == JSON_OWNED_STRING);
 }
 
-inline bool variantIsArray(const JsonVariantData* var) {
+inline bool variantIsArray(const VariantData* var) {
   return var && var->type == JSON_ARRAY;
 }
 
-inline bool variantIsObject(const JsonVariantData* var) {
+inline bool variantIsObject(const VariantData* var) {
   return var && var->type == JSON_OBJECT;
 }
 
-inline bool variantIsNull(const JsonVariantData* var) {
+inline bool variantIsNull(const VariantData* var) {
   return var == 0 || var->type == JSON_NULL;
 }
 
-inline bool variantEquals(const JsonVariantData* a, const JsonVariantData* b) {
+inline bool variantEquals(const VariantData* a, const VariantData* b) {
   if (a == b) return true;
   if (!a || !b) return false;
   if (a->type != b->type) return false;

src/ArduinoJson/Variant/VariantImpl.hpp

@@ -0,0 +1,118 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Configuration.hpp"
+#include "../Numbers/parseFloat.hpp"
+#include "../Numbers/parseInteger.hpp"
+#include "VariantRef.hpp"
+
+#include <string.h>  // for strcmp
+
+namespace ARDUINOJSON_NAMESPACE {
+
+inline bool VariantRef::set(ArrayRef array) const {
+  return to<ArrayRef>().copyFrom(array);
+}
+
+inline bool VariantRef::set(const ArraySubscript& value) const {
+  return set(value.as<VariantRef>());
+}
+
+inline bool VariantRef::set(ObjectRef object) const {
+  return to<ObjectRef>().copyFrom(object);
+}
+
+template <typename TString>
+inline bool VariantRef::set(const ObjectSubscript<TString>& value) const {
+  return set(value.template as<VariantRef>());
+}
+
+inline bool VariantRef::set(VariantConstRef value) const {
+  return variantCopy(_data, value._data, _memoryPool);
+}
+
+inline bool VariantRef::set(VariantRef value) const {
+  return variantCopy(_data, value._data, _memoryPool);
+}
+
+template <typename T>
+inline typename enable_if<is_same<T, ArrayRef>::value, T>::type VariantRef::as()
+    const {
+  return ArrayRef(_memoryPool, variantAsArray(_data));
+}
+
+template <typename T>
+inline typename enable_if<is_same<T, ObjectRef>::value, T>::type
+VariantRef::as() const {
+  return ObjectRef(_memoryPool, variantAsObject(_data));
+}
+
+template <typename T>
+inline typename enable_if<is_same<T, ArrayRef>::value, ArrayRef>::type
+VariantRef::to() const {
+  return ArrayRef(_memoryPool, variantToArray(_data));
+}
+
+template <typename T>
+typename enable_if<is_same<T, ObjectRef>::value, ObjectRef>::type
+VariantRef::to() const {
+  return ObjectRef(_memoryPool, variantToObject(_data));
+}
+
+template <typename T>
+typename enable_if<is_same<T, VariantRef>::value, VariantRef>::type
+VariantRef::to() const {
+  variantSetNull(_data);
+  return *this;
+}
+
+template <typename Visitor>
+inline void VariantRef::accept(Visitor& visitor) const {
+  return VariantConstRef(_data).accept(visitor);
+}
+
+template <typename Visitor>
+inline void VariantConstRef::accept(Visitor& visitor) const {
+  if (!_data) return visitor.visitNull();
+
+  switch (_data->type) {
+    case JSON_FLOAT:
+      return visitor.visitFloat(_data->content.asFloat);
+
+    case JSON_ARRAY:
+      return visitor.visitArray(ArrayConstRef(&_data->content.asArray));
+
+    case JSON_OBJECT:
+      return visitor.visitObject(ObjectConstRef(&_data->content.asObject));
+
+    case JSON_LINKED_STRING:
+    case JSON_OWNED_STRING:
+      return visitor.visitString(_data->content.asString);
+
+    case JSON_OWNED_RAW:
+    case JSON_LINKED_RAW:
+      return visitor.visitRawJson(_data->content.asRaw.data,
+                                  _data->content.asRaw.size);
+
+    case JSON_NEGATIVE_INTEGER:
+      return visitor.visitNegativeInteger(_data->content.asInteger);
+
+    case JSON_POSITIVE_INTEGER:
+      return visitor.visitPositiveInteger(_data->content.asInteger);
+
+    case JSON_BOOLEAN:
+      return visitor.visitBoolean(_data->content.asInteger != 0);
+
+    default:
+      return visitor.visitNull();
+  }
+}
+
+inline VariantConstRef VariantConstRef::operator[](size_t index) const {
+  return ArrayConstRef(variantAsArray(_data))[index];
+}
+
+}  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Variant/VariantRef.hpp

@@ -7,26 +7,26 @@
 #include <stddef.h>
 #include <stdint.h>  // for uint8_t
 
-#include "Data/JsonVariantData.hpp"
-#include "Data/VariantAs.hpp"
-#include "Data/VariantFunctions.hpp"
-#include "JsonVariant.hpp"
-#include "JsonVariantBase.hpp"
-#include "Memory/MemoryPool.hpp"
-#include "Numbers/parseFloat.hpp"
-#include "Numbers/parseInteger.hpp"
-#include "Polyfills/type_traits.hpp"
-#include "Visitable.hpp"
+#include "../Memory/MemoryPool.hpp"
+#include "../Misc/Visitable.hpp"
+#include "../Numbers/parseFloat.hpp"
+#include "../Numbers/parseInteger.hpp"
+#include "../Operators/VariantOperators.hpp"
+#include "../Polyfills/type_traits.hpp"
+#include "VariantAs.hpp"
+#include "VariantData.hpp"
+#include "VariantFunctions.hpp"
+#include "VariantRef.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
 // Forward declarations.
-class JsonArray;
-class JsonObject;
+class ArrayRef;
+class ObjectRef;
 
-// Contains the methods shared by JsonVariant and JsonVariantConst
+// Contains the methods shared by VariantRef and VariantConstRef
 template <typename TData>
-class JsonVariantProxy {
+class VariantRefBase {
  public:
   // Tells wether the variant has the specified type.
   // Returns true if the variant has type type T, false otherwise.
@@ -74,20 +74,20 @@ class JsonVariantProxy {
     return variantIsString(_data);
   }
   //
-  // bool is<JsonArray> const;
-  // bool is<const JsonArray> const;
+  // bool is<ArrayRef> const;
+  // bool is<const ArrayRef> const;
   template <typename T>
   FORCE_INLINE typename enable_if<
-      is_same<typename remove_const<T>::type, JsonArray>::value, bool>::type
+      is_same<typename remove_const<T>::type, ArrayRef>::value, bool>::type
   is() const {
     return variantIsArray(_data);
   }
   //
-  // bool is<JsonObject> const;
-  // bool is<const JsonObject> const;
+  // bool is<ObjectRef> const;
+  // bool is<const ObjectRef> const;
   template <typename T>
   FORCE_INLINE typename enable_if<
-      is_same<typename remove_const<T>::type, JsonObject>::value, bool>::type
+      is_same<typename remove_const<T>::type, ObjectRef>::value, bool>::type
   is() const {
     return variantIsObject(_data);
   }
@@ -106,7 +106,7 @@ class JsonVariantProxy {
   }
 
  protected:
-  JsonVariantProxy(TData *data) : _data(data) {}
+  VariantRefBase(TData *data) : _data(data) {}
   TData *_data;
 };
 
@@ -116,20 +116,20 @@ class JsonVariantProxy {
 // - a boolean
 // - a char, short, int or a long (signed or unsigned)
 // - a string (const char*)
-// - a reference to a JsonArray or JsonObject
-class JsonVariant : public JsonVariantProxy<JsonVariantData>,
-                    public JsonVariantBase<JsonVariant>,
-                    public Visitable {
-  typedef JsonVariantProxy<JsonVariantData> proxy_type;
-  friend class JsonVariantConst;
+// - a reference to a ArrayRef or ObjectRef
+class VariantRef : public VariantRefBase<VariantData>,
+                   public VariantOperators<VariantRef>,
+                   public Visitable {
+  typedef VariantRefBase<VariantData> base_type;
+  friend class VariantConstRef;
 
  public:
   // Intenal use only
-  FORCE_INLINE JsonVariant(MemoryPool *memoryPool, JsonVariantData *data)
-      : proxy_type(data), _memoryPool(memoryPool) {}
+  FORCE_INLINE VariantRef(MemoryPool *memoryPool, VariantData *data)
+      : base_type(data), _memoryPool(memoryPool) {}
 
-  // Creates an uninitialized JsonVariant
-  FORCE_INLINE JsonVariant() : proxy_type(0), _memoryPool(0) {}
+  // Creates an uninitialized VariantRef
+  FORCE_INLINE VariantRef() : base_type(0), _memoryPool(0) {}
 
   // set(bool value)
   FORCE_INLINE bool set(bool value) const {
@@ -142,7 +142,7 @@ class JsonVariant : public JsonVariantProxy<JsonVariantData>,
   FORCE_INLINE bool set(
       T value,
       typename enable_if<is_floating_point<T>::value>::type * = 0) const {
-    return variantSetFloat(_data, static_cast<JsonFloat>(value));
+    return variantSetFloat(_data, static_cast<Float>(value));
   }
 
   // set(char)
@@ -165,7 +165,7 @@ class JsonVariant : public JsonVariantProxy<JsonVariantData>,
   FORCE_INLINE bool set(
       T value, typename enable_if<is_integral<T>::value &&
                                   is_unsigned<T>::value>::type * = 0) const {
-    return variantSetUnsignedInteger(_data, static_cast<JsonUInt>(value));
+    return variantSetUnsignedInteger(_data, static_cast<UInt>(value));
   }
 
   // set(SerializedValue<const char *>)
@@ -213,43 +213,43 @@ class JsonVariant : public JsonVariantProxy<JsonVariantData>,
     return variantSetString(_data, value.c_str());
   }
 
-  bool set(JsonVariantConst value) const;
-  bool set(JsonVariant value) const;
+  bool set(VariantConstRef value) const;
+  bool set(VariantRef value) const;
 
-  FORCE_INLINE bool set(JsonArray array) const;
-  FORCE_INLINE bool set(const JsonArraySubscript &) const;
-  FORCE_INLINE bool set(JsonObject object) const;
+  FORCE_INLINE bool set(ArrayRef array) const;
+  FORCE_INLINE bool set(const ArraySubscript &) const;
+  FORCE_INLINE bool set(ObjectRef object) const;
   template <typename TString>
-  FORCE_INLINE bool set(const JsonObjectSubscript<TString> &) const;
+  FORCE_INLINE bool set(const ObjectSubscript<TString> &) const;
 
   // Get the variant as the specified type.
   //
   // std::string as<std::string>() const;
   // String as<String>() const;
   template <typename T>
-  FORCE_INLINE typename enable_if<!is_same<T, JsonArray>::value &&
-                                      !is_same<T, JsonObject>::value &&
-                                      !is_same<T, JsonVariant>::value,
-                                  typename JsonVariantAs<T>::type>::type
+  FORCE_INLINE typename enable_if<!is_same<T, ArrayRef>::value &&
+                                      !is_same<T, ObjectRef>::value &&
+                                      !is_same<T, VariantRef>::value,
+                                  typename VariantAs<T>::type>::type
   as() const {
     return variantAs<T>(_data);
   }
   //
-  // JsonArray as<JsonArray>() const;
-  // const JsonArray as<const JsonArray>() const;
+  // ArrayRef as<ArrayRef>() const;
+  // const ArrayRef as<const ArrayRef>() const;
   template <typename T>
-  FORCE_INLINE typename enable_if<is_same<T, JsonArray>::value, T>::type as()
+  FORCE_INLINE typename enable_if<is_same<T, ArrayRef>::value, T>::type as()
       const;
   //
-  // JsonObject as<JsonObject>() const;
-  // const JsonObject as<const JsonObject>() const;
+  // ObjectRef as<ObjectRef>() const;
+  // const ObjectRef as<const ObjectRef>() const;
   template <typename T>
-  FORCE_INLINE typename enable_if<is_same<T, JsonObject>::value, T>::type as()
+  FORCE_INLINE typename enable_if<is_same<T, ObjectRef>::value, T>::type as()
       const;
   //
-  // JsonVariant as<JsonVariant> const;
+  // VariantRef as<VariantRef> const;
   template <typename T>
-  FORCE_INLINE typename enable_if<is_same<T, JsonVariant>::value, T>::type as()
+  FORCE_INLINE typename enable_if<is_same<T, VariantRef>::value, T>::type as()
       const {
     return *this;
   }
@@ -257,44 +257,43 @@ class JsonVariant : public JsonVariantProxy<JsonVariantData>,
   template <typename Visitor>
   void accept(Visitor &visitor) const;
 
-  FORCE_INLINE bool operator==(JsonVariant lhs) const {
+  FORCE_INLINE bool operator==(VariantRef lhs) const {
     return variantEquals(_data, lhs._data);
   }
 
-  FORCE_INLINE bool operator!=(JsonVariant lhs) const {
+  FORCE_INLINE bool operator!=(VariantRef lhs) const {
     return !variantEquals(_data, lhs._data);
   }
 
   // Change the type of the variant
   //
-  // JsonArray to<JsonArray>()
+  // ArrayRef to<ArrayRef>()
   template <typename T>
-  typename enable_if<is_same<T, JsonArray>::value, JsonArray>::type to() const;
+  typename enable_if<is_same<T, ArrayRef>::value, ArrayRef>::type to() const;
   //
-  // JsonObject to<JsonObject>()
+  // ObjectRef to<ObjectRef>()
   template <typename T>
-  typename enable_if<is_same<T, JsonObject>::value, JsonObject>::type to()
-      const;
+  typename enable_if<is_same<T, ObjectRef>::value, ObjectRef>::type to() const;
   //
-  // JsonObject to<JsonVariant>()
+  // ObjectRef to<VariantRef>()
   template <typename T>
-  typename enable_if<is_same<T, JsonVariant>::value, JsonVariant>::type to()
+  typename enable_if<is_same<T, VariantRef>::value, VariantRef>::type to()
       const;
 
  private:
   MemoryPool *_memoryPool;
 };
 
-class JsonVariantConst : public JsonVariantProxy<const JsonVariantData>,
-                         public JsonVariantBase<JsonVariantConst>,
-                         public Visitable {
-  typedef JsonVariantProxy<const JsonVariantData> proxy_type;
-  friend class JsonVariant;
+class VariantConstRef : public VariantRefBase<const VariantData>,
+                        public VariantOperators<VariantConstRef>,
+                        public Visitable {
+  typedef VariantRefBase<const VariantData> base_type;
+  friend class VariantRef;
 
  public:
-  JsonVariantConst() : proxy_type(0) {}
-  JsonVariantConst(const JsonVariantData *data) : proxy_type(data) {}
-  JsonVariantConst(JsonVariant var) : proxy_type(var._data) {}
+  VariantConstRef() : base_type(0) {}
+  VariantConstRef(const VariantData *data) : base_type(data) {}
+  VariantConstRef(VariantRef var) : base_type(var._data) {}
 
   template <typename Visitor>
   void accept(Visitor &visitor) const;
@@ -302,29 +301,29 @@ class JsonVariantConst : public JsonVariantProxy<const JsonVariantData>,
   // Get the variant as the specified type.
   //
   template <typename T>
-  FORCE_INLINE typename JsonVariantConstAs<T>::type as() const {
-    return variantAs<typename JsonVariantConstAs<T>::type>(_data);
+  FORCE_INLINE typename VariantConstAs<T>::type as() const {
+    return variantAs<typename VariantConstAs<T>::type>(_data);
   }
 
-  FORCE_INLINE JsonVariantConst operator[](size_t index) const;
+  FORCE_INLINE VariantConstRef operator[](size_t index) const;
 
   //
-  // const JsonVariantConst operator[](TKey) const;
+  // const VariantConstRef operator[](TKey) const;
   // TKey = const std::string&, const String&
   template <typename TString>
   FORCE_INLINE
-      typename enable_if<IsString<TString>::value, JsonVariantConst>::type
+      typename enable_if<IsString<TString>::value, VariantConstRef>::type
       operator[](const TString &key) const {
-    return JsonVariantConst(objectGet(variantAsObject(_data), makeString(key)));
+    return VariantConstRef(objectGet(variantAsObject(_data), makeString(key)));
   }
   //
-  // JsonVariantConst operator[](TKey);
+  // VariantConstRef operator[](TKey);
   // TKey = const char*, const char[N], const FlashStringHelper*
   template <typename TString>
   FORCE_INLINE
-      typename enable_if<IsString<TString *>::value, JsonVariantConst>::type
+      typename enable_if<IsString<TString *>::value, VariantConstRef>::type
       operator[](TString *key) const {
-    return JsonVariantConst(objectGet(variantAsObject(_data), makeString(key)));
+    return VariantConstRef(objectGet(variantAsObject(_data), makeString(key)));
   }
 };
 }  // namespace ARDUINOJSON_NAMESPACE

src/ArduinoJson/Variant/VariantSlot.hpp

@@ -4,15 +4,15 @@
 
 #pragma once
 
-#include "../Data/JsonVariantData.hpp"
 #include "../Polyfills/type_traits.hpp"
+#include "../Variant/VariantData.hpp"
 
 namespace ARDUINOJSON_NAMESPACE {
 
 typedef conditional<sizeof(void*) <= 2, int8_t, int16_t>::type VariantSlotDiff;
 
 struct VariantSlot {
-  JsonVariantData value;
+  VariantData value;
   VariantSlotDiff next;
   VariantSlotDiff prev;
   const char* key;

src/ArduinoJson/Variant/VariantTo.hpp

@@ -5,26 +5,26 @@
 #pragma once
 
 namespace ARDUINOJSON_NAMESPACE {
-class JsonArray;
-class JsonObject;
-class JsonVariant;
+class ArrayRef;
+class ObjectRef;
+class VariantRef;
 
 // A metafunction that returns the type of the value returned by
-// JsonVariant::to<T>()
+// VariantRef::to<T>()
 template <typename T>
-struct JsonVariantTo {};
+struct VariantTo {};
 
 template <>
-struct JsonVariantTo<JsonArray> {
-  typedef JsonArray type;
+struct VariantTo<ArrayRef> {
+  typedef ArrayRef type;
 };
 template <>
-struct JsonVariantTo<JsonObject> {
-  typedef JsonObject type;
+struct VariantTo<ObjectRef> {
+  typedef ObjectRef type;
 };
 template <>
-struct JsonVariantTo<JsonVariant> {
-  typedef JsonVariant type;
+struct VariantTo<VariantRef> {
+  typedef VariantRef type;
 };
 
 }  // namespace ARDUINOJSON_NAMESPACE

test/Misc/TypeTraits.cpp

@@ -13,9 +13,6 @@ TEST_CASE("Polyfills/type_traits") {
         static_cast<bool>(is_base_of<std::istream, std::ostringstream>::value));
     REQUIRE(
         static_cast<bool>(is_base_of<std::istream, std::istringstream>::value));
-    REQUIRE(static_cast<bool>(
-        is_base_of<JsonVariantBase<JsonObjectSubscript<const char*> >,
-                   JsonObjectSubscript<const char*> >::value));
   }
 
   SECTION("is_array") {
@@ -54,14 +51,14 @@ TEST_CASE("Polyfills/type_traits") {
   SECTION("IsVisitable") {
     CHECK(IsVisitable<DeserializationError>::value == false);
     CHECK(IsVisitable<JsonPair>::value == false);
-    CHECK(IsVisitable<JsonVariant>::value == true);
-    CHECK(IsVisitable<JsonVariantConst>::value == true);
-    CHECK(IsVisitable<JsonArray>::value == true);
-    CHECK(IsVisitable<JsonArraySubscript>::value == true);
-    CHECK(IsVisitable<JsonArrayConst>::value == true);
-    CHECK(IsVisitable<JsonObject>::value == true);
-    CHECK(IsVisitable<JsonObjectSubscript<const char*> >::value == true);
-    CHECK(IsVisitable<JsonObjectConst>::value == true);
+    CHECK(IsVisitable<VariantRef>::value == true);
+    CHECK(IsVisitable<VariantConstRef>::value == true);
+    CHECK(IsVisitable<ArrayRef>::value == true);
+    CHECK(IsVisitable<ArraySubscript>::value == true);
+    CHECK(IsVisitable<ArrayConstRef>::value == true);
+    CHECK(IsVisitable<ObjectRef>::value == true);
+    CHECK(IsVisitable<ObjectSubscript<const char*> >::value == true);
+    CHECK(IsVisitable<ObjectConstRef>::value == true);
     CHECK(IsVisitable<DynamicJsonDocument>::value == true);
     CHECK(IsVisitable<StaticJsonDocument<10> >::value == true);
   }