Set version to 6.0.1-beta

Return NotSupported if the JSON input contains "\u".

.gitignore

@@ -9,3 +9,4 @@
 /fuzzing/*_fuzzer
 /fuzzing/*_fuzzer.options
 /fuzzing/*_fuzzer_seed_corpus.zip
+.vs/

.travis.yml

@@ -2,12 +2,6 @@ sudo: false
 language: cpp
 matrix:
   include:
-    - compiler: gcc
-      addons:
-        apt:
-          sources: ['ubuntu-toolchain-r-test']
-          packages: ['g++-4.4']
-      env: SCRIPT=cmake GCC=4.4
     - compiler: gcc
       addons:
         apt:
@@ -37,7 +31,7 @@ matrix:
         apt:
           sources: ['ubuntu-toolchain-r-test']
           packages: ['g++-5']
-      env: SCRIPT=cmake GCC=5
+      env: SCRIPT=cmake GCC=5 # SANITIZE=undefined 
     - compiler: gcc
       addons:
         apt:
@@ -111,7 +105,7 @@ matrix:
       compiler: clang
       env: SCRIPT=cmake SANITIZE=address
     - env: SCRIPT=arduino VERSION=1.6.7 BOARD=arduino:avr:uno
-    - env: SCRIPT=arduino VERSION=1.8.2 BOARD=arduino:avr:uno
+    - env: SCRIPT=arduino VERSION=1.8.2 BOARD=arduino:samd:mkr1000
     - env: SCRIPT=platformio BOARD=uno
     - env: SCRIPT=platformio BOARD=esp01
     - compiler: clang

CHANGELOG.md

@@ -1,6 +1,72 @@
 ArduinoJson: change log
 =======================
 
+v6.0.1-beta
+-----------
+
+* Fixed conflicts with `isnan()` and `isinf()` macros (issue #752)
+
+v6.0.0-beta
+-----------
+
+* Added `DynamicJsonDocument` and `StaticJsonDocument`
+* Added `deserializeJson()`
+* Added `serializeJson()` and `serializeJsonPretty()`
+* Added `measureJson()` and `measureJsonPretty()`
+* Added `serializeMsgPack()`, `deserializeMsgPack()` and `measureMsgPack()` (issue #358)
+* Added example `MsgPackParser.ino` (issue #358)
+* Added support for non zero-terminated strings (issue #704)
+* Removed `JsonBuffer::parseArray()`, `parseObject()` and `parse()`
+* Removed `JsonBuffer::createArray()` and `createObject()`
+* Removed `printTo()` and `prettyPrintTo()`
+* Removed `measureLength()` and `measurePrettyLength()`
+* Removed all deprecated features
+
+> ### BREAKING CHANGES
+> 
+> #### Deserialization
+> 
+> Old code:
+> 
+> ```c++
+> DynamicJsonBuffer jb;
+> JsonObject& obj = jb.parseObject(json);
+> if (obj.success()) {
+> 
+> }
+> ```
+> 
+> New code:
+> 
+> ```c++
+> DynamicJsonDocument doc;
+> DeserializationError error = deserializeJson(doc, json);
+> if (error) {
+> 
+> }
+> JsonObject& obj = doc.as<JsonObject>();
+> ```
+> 
+> #### Serialization
+> 
+> Old code:
+> 
+> ```c++
+> DynamicJsonBuffer jb;
+> JsonObject& obj = jb.createObject();
+> obj["key"] = "value";
+> obj.printTo(Serial);
+> ```
+> 
+> New code:
+> 
+> ```c++
+> DynamicJsonDocument obj;
+> JsonObject& obj = doc.to<JsonObject>();
+> obj["key"] = "value";
+> serializeJson(doc, Serial);
+> ```
+
 v5.13.2
 -------
 
@@ -420,52 +486,3 @@ However, you should not see this as an invitation to use the `String` class.
 The `String` class is **bad** because it uses dynamic memory allocation.
 Compared to static allocation, it compiles to a bigger, slower program, and is less predictable.
 You certainly don't want that in an embedded environment!
-
-v4.6
-----
-
-* Fixed segmentation fault in `DynamicJsonBuffer` when memory allocation fails (issue #92)
-
-v4.5
-----
-
-* Fixed buffer overflow when input contains a backslash followed by a terminator (issue #81)
-
-**Upgrading is recommended** since previous versions contain a potential security risk.
-
-Special thanks to [Giancarlo Canales Barreto](https://github.com/gcanalesb) for finding this nasty bug.
-
-v4.4
-----
-
-* Added `JsonArray::measureLength()` and `JsonObject::measureLength()` (issue #75)
-
-v4.3
-----
-
-* Added `JsonArray::removeAt()` to remove an element of an array (issue #58)
-* Fixed stack-overflow in `DynamicJsonBuffer` when parsing huge JSON files (issue #65)
-* Fixed wrong return value of `parseArray()` and `parseObject()` when allocation fails (issue #68)
-
-v4.2
-----
-
-* Switched back to old library layout (issues #39, #43 and #45)
-* Removed global new operator overload (issue #40, #45 and #46)
-* Added an example with EthernetServer
-
-v4.1
-----
-
-* Added DynamicJsonBuffer (issue #19)
-
-v4.0
-----
-
-* Unified parser and generator API (issue #23)
-* Updated library layout, now requires Arduino 1.0.6 or newer
-
-> ### BREAKING CHANGES :warning:
->
-> API changed significantly since v3, see [Migrating code to the new API](https://arduinojson.org/doc/migration/).
-

README.md

@@ -10,6 +10,7 @@ ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
 
 * JSON decoding (comments are supported)
 * JSON encoding (with optional indentation)
+* MessagePack
 * Elegant API, easy to use
 * Fixed memory allocation (zero malloc)
 * No data duplication (zero copy)
@@ -59,10 +60,10 @@ Here is a program that parses a JSON document with ArduinoJson.
 ```c++
 char json[] = "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
 
-StaticJsonBuffer<200> jsonBuffer;
-
-JsonObject& root = jsonBuffer.parseObject(json);
+DynamicJsonDocument doc;
+deserializeJson(doc, json);
 
+JsonObject& root = doc.as<JsonObject>();
 const char* sensor = root["sensor"];
 long time          = root["time"];
 double latitude    = root["data"][0];
@@ -76,9 +77,9 @@ See the [tutorial on arduinojson.org](https://arduinojson.org/doc/decoding/?utm_
 Here is a program that generates a JSON document with ArduinoJson:
 
 ```c++
-StaticJsonBuffer<200> jsonBuffer;
+DynamicJsonDocument doc;
 
-JsonObject& root = jsonBuffer.createObject();
+JsonObject& root = doc.to<JsonObject>();
 root["sensor"] = "gps";
 root["time"] = 1351824120;
 
@@ -86,7 +87,7 @@ JsonArray& data = root.createNestedArray("data");
 data.add(48.756080);
 data.add(2.302038);
 
-root.printTo(Serial);
+serializeJson(doc, Serial);
 // This prints:
 // {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]}
 ```
@@ -107,4 +108,4 @@ The documentation is available on [arduinojson.org](https://arduinojson.org/?utm
 Do you like this library? Please [star this project on GitHub](https://github.com/bblanchon/ArduinoJson/stargazers)!
 
 What? You don't like it but you *love* it?
-We don't take donations anymore, but [we sell a book](https://arduinojson.org/book/?utm_source=github&utm_medium=readme), so you can help and learn at the same time!
+We don't take donations anymore, but [we sell a book](https://arduinojson.org/book/?utm_source=github&utm_medium=readme), so you can help and learn at the same time!

appveyor.yml

@@ -1,4 +1,4 @@
-version: 5.13.2.{build}
+version: 6.0.1.{build}
 environment:
   matrix:
   - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017

examples/JsonConfigFile/JsonConfigFile.ino

@@ -29,17 +29,19 @@ void loadConfiguration(const char *filename, Config &config) {
   // Open file for reading
   File file = SD.open(filename);
 
-  // Allocate the memory pool on the stack.
-  // Don't forget to change the capacity to match your JSON document.
+  // Allocate the document on the stack.
+  // Don't forget to change the capacity to match your requirements.
   // Use arduinojson.org/assistant to compute the capacity.
-  StaticJsonBuffer<512> jsonBuffer;
+  StaticJsonDocument<512> doc;
 
-  // Parse the root object
-  JsonObject &root = jsonBuffer.parseObject(file);
-
-  if (!root.success())
+  // Deserialize the JSON document
+  DeserializationError error = deserializeJson(doc, file);
+  if (error)
     Serial.println(F("Failed to read file, using default configuration"));
 
+  // Get the root object in the document
+  JsonObject &root = doc.as<JsonObject>();
+
   // Copy values from the JsonObject to the Config
   config.port = root["port"] | 2731;
   strlcpy(config.hostname,                   // <- destination
@@ -62,20 +64,20 @@ void saveConfiguration(const char *filename, const Config &config) {
     return;
   }
 
-  // Allocate the memory pool on the stack
-  // Don't forget to change the capacity to match your JSON document.
-  // Use https://arduinojson.org/assistant/ to compute the capacity.
-  StaticJsonBuffer<256> jsonBuffer;
+  // Allocate the document on the stack.
+  // Don't forget to change the capacity to match your requirements.
+  // Use arduinojson.org/assistant to compute the capacity.
+  StaticJsonDocument<256> doc;
 
-  // Parse the root object
-  JsonObject &root = jsonBuffer.createObject();
+  // Make our document contain an object
+  JsonObject &root = doc.to<JsonObject>();
 
-  // Set the values
+  // Set the values in the object
   root["hostname"] = config.hostname;
   root["port"] = config.port;
 
   // Serialize JSON to file
-  if (root.printTo(file) == 0) {
+  if (serializeJson(doc, file) == 0) {
     Serial.println(F("Failed to write to file"));
   }
 
@@ -141,4 +143,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a case study of a project that has
 // a complex configuration with nested members.
 // Contrary to this example, the project in the book uses the SPIFFS filesystem.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/JsonGeneratorExample/JsonGeneratorExample.ino

@@ -11,24 +11,20 @@ void setup() {
   Serial.begin(9600);
   while (!Serial) continue;
 
-  // Memory pool for JSON object tree.
+  // Allocate the JSON document
   //
-  // Inside the brackets, 200 is the size of the pool in bytes.
-  // Don't forget to change this value to match your JSON document.
+  // Inside the brackets, 200 is the RAM allocated to this document.
+  // Don't forget to change this value to match your requirement.
   // Use arduinojson.org/assistant to compute the capacity.
-  StaticJsonBuffer<200> jsonBuffer;
+  StaticJsonDocument<200> doc;
 
-  // StaticJsonBuffer allocates memory on the stack, it can be
-  // replaced by DynamicJsonBuffer which allocates in the heap.
+  // StaticJsonObject allocates memory on the stack, it can be
+  // replaced by DynamicJsonDocument which allocates in the heap.
   //
-  // DynamicJsonBuffer  jsonBuffer(200);
+  // DynamicJsonDocument  doc(200);
 
-  // Create the root of the object tree.
-  //
-  // It's a reference to the JsonObject, the actual bytes are inside the
-  // JsonBuffer with all the other nodes of the object tree.
-  // Memory is freed when jsonBuffer goes out of scope.
-  JsonObject& root = jsonBuffer.createObject();
+  // Make our document be an object
+  JsonObject& root = doc.to<JsonObject>();
 
   // Add values in the object
   //
@@ -37,21 +33,19 @@ void setup() {
   root["sensor"] = "gps";
   root["time"] = 1351824120;
 
-  // Add a nested array.
+  // Add an array.
   //
-  // It's also possible to create the array separately and add it to the
-  // JsonObject but it's less efficient.
   JsonArray& data = root.createNestedArray("data");
   data.add(48.756080);
   data.add(2.302038);
 
-  root.printTo(Serial);
+  serializeJson(root, Serial);
   // This prints:
   // {"sensor":"gps","time":1351824120,"data":[48.756080,2.302038]}
 
   Serial.println();
 
-  root.prettyPrintTo(Serial);
+  serializeJsonPretty(root, Serial);
   // This prints:
   // {
   //   "sensor": "gps",
@@ -78,4 +72,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a tutorial on serialization.
 // It begins with a simple example, like the one above, and then adds more
 // features like serializing directly to a file or an HTTP request.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/JsonHttpClient/JsonHttpClient.ino

@@ -70,19 +70,21 @@ void setup() {
     return;
   }
 
-  // Allocate JsonBuffer
+  // Allocate the JSON document
   // Use arduinojson.org/assistant to compute the capacity.
   const size_t capacity = JSON_OBJECT_SIZE(3) + JSON_ARRAY_SIZE(2) + 60;
-  DynamicJsonBuffer jsonBuffer(capacity);
+  DynamicJsonDocument doc(capacity);
 
   // Parse JSON object
-  JsonObject& root = jsonBuffer.parseObject(client);
-  if (!root.success()) {
-    Serial.println(F("Parsing failed!"));
+  DeserializationError error = deserializeJson(doc, client);
+  if (error) {
+    Serial.print(F("deserializeJson() failed: "));
+    Serial.println(error.c_str());
     return;
   }
 
   // Extract values
+  JsonObject& root = doc.as<JsonObject>();
   Serial.println(F("Response:"));
   Serial.println(root["sensor"].as<char*>());
   Serial.println(root["time"].as<char*>());
@@ -109,4 +111,4 @@ void loop() {
 // showing how to parse the response from Yahoo Weather. In the last chapter,
 // it shows how to parse the huge documents from OpenWeatherMap
 // and Weather Underground.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/JsonParserExample/JsonParserExample.ino

@@ -11,17 +11,17 @@ void setup() {
   Serial.begin(9600);
   while (!Serial) continue;
 
-  // Memory pool for JSON object tree.
+  // Allocate the JSON document
   //
-  // Inside the brackets, 200 is the size of the pool in bytes.
+  // Inside the brackets, 200 is the size of the memory pool in bytes.
   // Don't forget to change this value to match your JSON document.
   // Use arduinojson.org/assistant to compute the capacity.
-  StaticJsonBuffer<200> jsonBuffer;
+  StaticJsonDocument<200> doc;
 
-  // StaticJsonBuffer allocates memory on the stack, it can be
-  // replaced by DynamicJsonBuffer which allocates in the heap.
+  // StaticJsonDocument<N> allocates memory on the stack, it can be
+  // replaced by DynamicJsonObject which allocates in the heap.
   //
-  // DynamicJsonBuffer  jsonBuffer(200);
+  // DynamicJsonObject doc(200);
 
   // JSON input string.
   //
@@ -31,19 +31,19 @@ void setup() {
   char json[] =
       "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
 
-  // Root of the object tree.
-  //
-  // It's a reference to the JsonObject, the actual bytes are inside the
-  // JsonBuffer with all the other nodes of the object tree.
-  // Memory is freed when jsonBuffer goes out of scope.
-  JsonObject& root = jsonBuffer.parseObject(json);
+  // Deserialize the JSON document
+  DeserializationError error = deserializeJson(doc, json);
 
   // Test if parsing succeeds.
-  if (!root.success()) {
-    Serial.println("parseObject() failed");
+  if (error) {
+    Serial.print(F("deserializeJson() failed: "));
+    Serial.println(error.c_str());
     return;
   }
 
+  // Get the root object in the document
+  JsonObject& root = doc.as<JsonObject>();
+
   // Fetch values.
   //
   // Most of the time, you can rely on the implicit casts.
@@ -75,4 +75,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a tutorial on deserialization.
 // It begins with a simple example, like the one above, and then adds more
 // features like deserializing directly from a file or an HTTP request.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/JsonServer/JsonServer.ino

@@ -51,12 +51,12 @@ void loop() {
   // Read the request (we ignore the content in this example)
   while (client.available()) client.read();
 
-  // Allocate JsonBuffer
+  // Allocate the JSON document
   // Use arduinojson.org/assistant to compute the capacity.
-  StaticJsonBuffer<500> jsonBuffer;
+  StaticJsonDocument<500> doc;
 
-  // Create the root object
-  JsonObject& root = jsonBuffer.createObject();
+  // Make our document represent an object
+  JsonObject& root = doc.to<JsonObject>();
 
   // Create the "analog" array
   JsonArray& analogValues = root.createNestedArray("analog");
@@ -79,7 +79,7 @@ void loop() {
   }
 
   Serial.print(F("Sending: "));
-  root.printTo(Serial);
+  serializeJson(root, Serial);
   Serial.println();
 
   // Write response headers
@@ -89,7 +89,7 @@ void loop() {
   client.println();
 
   // Write JSON document
-  root.prettyPrintTo(client);
+  serializeJsonPretty(root, client);
 
   // Disconnect
   client.stop();
@@ -106,4 +106,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a tutorial on serialization.
 // It begins with a simple example, then adds more features like serializing
 // directly to a file or an HTTP client.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/JsonUdpBeacon/JsonUdpBeacon.ino

@@ -43,12 +43,12 @@ void setup() {
 }
 
 void loop() {
-  // Allocate JsonBuffer
+  // Allocate the JSON document
   // Use arduinojson.org/assistant to compute the capacity.
-  StaticJsonBuffer<500> jsonBuffer;
+  StaticJsonDocument<500> doc;
 
-  // Create the root object
-  JsonObject& root = jsonBuffer.createObject();
+  // Make our document represent an object
+  JsonObject& root = doc.to<JsonObject>();
 
   // Create the "analog" array
   JsonArray& analogValues = root.createNestedArray("analog");
@@ -75,11 +75,11 @@ void loop() {
   Serial.print(remoteIp);
   Serial.print(F(" on port "));
   Serial.println(remotePort);
-  root.printTo(Serial);
+  serializeJson(root, Serial);
 
   // Send UDP packet
   udp.beginPacket(remoteIp, remotePort);
-  root.printTo(udp);
+  serializeJson(root, udp);
   udp.println();
   udp.endPacket();
 
@@ -98,4 +98,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a tutorial on serialization.
 // It begins with a simple example, then adds more features like serializing
 // directly to a file or any stream.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/MsgPackParser/MsgPackParser.ino

@@ -0,0 +1,91 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+//
+// This example shows how to deserialize a MessagePack document with
+// ArduinoJson.
+
+#include <ArduinoJson.h>
+
+void setup() {
+  // Initialize serial port
+  Serial.begin(9600);
+  while (!Serial) continue;
+
+  // Allocate the JSON document
+  //
+  // Inside the brackets, 200 is the size of the memory pool in bytes.
+  // Don't forget to change this value to match your JSON document.
+  // Use arduinojson.org/assistant to compute the capacity.
+  StaticJsonDocument<200> doc;
+
+  // StaticJsonObject allocates memory on the stack, it can be
+  // replaced by DynamicJsonObject which allocates in the heap.
+  //
+  // DynamicJsonObject doc(200);
+
+  // MessagePack input string.
+  //
+  // It's better to use a char[] as shown here.
+  // If you use a const char* or a String, ArduinoJson will
+  // have to make a copy of the input in the JsonBuffer.
+  uint8_t input[] = {131, 166, 115, 101, 110, 115, 111, 114, 163, 103, 112, 115,
+                     164, 116, 105, 109, 101, 206, 80,  147, 50,  248, 164, 100,
+                     97,  116, 97,  146, 203, 64,  72,  96,  199, 58,  188, 148,
+                     112, 203, 64,  2,   106, 146, 230, 33,  49,  169};
+  // This MessagePack document contains:
+  // {
+  //   "sensor": "gps",
+  //   "time": 1351824120,
+  //   "data": [48.75608, 2.302038]
+  // }
+
+  // doc of the object tree.
+  //
+  // It's a reference to the JsonObject, the actual bytes are inside the
+  // JsonBuffer with all the other nodes of the object tree.
+  // Memory is freed when jsonBuffer goes out of scope.
+  DeserializationError error = deserializeMsgPack(doc, input);
+
+  // Test if parsing succeeds.
+  if (error) {
+    Serial.print("deserializeMsgPack() failed: ");
+    Serial.println(error.c_str());
+    return;
+  }
+
+  // Get the root object in the document
+  JsonObject& root = doc.as<JsonObject>();
+
+  // Fetch values.
+  //
+  // Most of the time, you can rely on the implicit casts.
+  // In other case, you can do root["time"].as<long>();
+  const char* sensor = root["sensor"];
+  long time = root["time"];
+  double latitude = root["data"][0];
+  double longitude = root["data"][1];
+
+  // Print values.
+  Serial.println(sensor);
+  Serial.println(time);
+  Serial.println(latitude, 6);
+  Serial.println(longitude, 6);
+}
+
+void loop() {
+  // not used in this example
+}
+
+// See also
+// --------
+//
+// The website arduinojson.org contains the documentation for all the functions
+// used above. It also includes an FAQ that will help you solve any
+// deserialization problem.
+// Please check it out at: https://arduinojson.org/
+//
+// The book "Mastering ArduinoJson" contains a tutorial on deserialization.
+// It begins with a simple example, like the one above, and then adds more
+// features like deserializing directly from a file or an HTTP request.
+// Please check it out at: https://arduinojson.org/book/

examples/ProgmemExample/ProgmemExample.ino

@@ -14,34 +14,34 @@
 void setup() {
 #ifdef PROGMEM  // <- check that Flash strings are supported
 
-  DynamicJsonBuffer jsonBuffer;
+  DynamicJsonDocument doc;
 
   // You can use a Flash String as your JSON input.
   // WARNING: the content of the Flash String will be duplicated in the
   // JsonBuffer.
-  JsonObject& root =
-      jsonBuffer.parseObject(F("{\"sensor\":\"gps\",\"time\":1351824120,"
-                               "\"data\":[48.756080,2.302038]}"));
+  deserializeJson(doc, F("{\"sensor\":\"gps\",\"time\":1351824120,"
+                         "\"data\":[48.756080,2.302038]}"));
+  JsonObject& obj = doc.as<JsonObject>();
 
   // You can use a Flash String to get an element of a JsonObject
   // No duplication is done.
-  long time = root[F("time")];
+  long time = obj[F("time")];
 
   // You can use a Flash String to set an element of a JsonObject
   // WARNING: the content of the Flash String will be duplicated in the
   // JsonBuffer.
-  root[F("time")] = time;
+  obj[F("time")] = time;
 
   // You can set a Flash String to a JsonObject or JsonArray:
   // WARNING: the content of the Flash String will be duplicated in the
   // JsonBuffer.
-  root["sensor"] = F("gps");
+  obj["sensor"] = F("gps");
 
   // It works with RawJson too:
-  root["sensor"] = RawJson(F("\"gps\""));
+  obj["sensor"] = RawJson(F("\"gps\""));
 
   // You can compare the content of a JsonVariant to a Flash String
-  if (root["sensor"] == F("gps")) {
+  if (obj["sensor"] == F("gps")) {
     // ...
   }
 
@@ -67,4 +67,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a quick C++ course that explains
 // how your microcontroller stores strings in memory. It also tells why you
 // should not abuse Flash strings with ArduinoJson.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

examples/StringExample/StringExample.ino

@@ -11,50 +11,51 @@
 #include <ArduinoJson.h>
 
 void setup() {
-  DynamicJsonBuffer jsonBuffer;
+  DynamicJsonDocument doc;
 
   // You can use a String as your JSON input.
   // WARNING: the content of the String will be duplicated in the JsonBuffer.
   String input =
       "{\"sensor\":\"gps\",\"time\":1351824120,\"data\":[48.756080,2.302038]}";
-  JsonObject& root = jsonBuffer.parseObject(input);
+  deserializeJson(doc, input);
+  JsonObject& obj = doc.as<JsonObject>();
 
   // You can use a String to get an element of a JsonObject
   // No duplication is done.
-  long time = root[String("time")];
+  long time = obj[String("time")];
 
   // You can use a String to set an element of a JsonObject
   // WARNING: the content of the String will be duplicated in the JsonBuffer.
-  root[String("time")] = time;
+  obj[String("time")] = time;
 
   // You can get a String from a JsonObject or JsonArray:
   // No duplication is done, at least not in the JsonBuffer.
-  String sensor = root["sensor"];
+  String sensor = obj["sensor"];
 
   // Unfortunately, the following doesn't work (issue #118):
-  // sensor = root["sensor"]; // <-  error "ambiguous overload for 'operator='"
+  // sensor = obj["sensor"]; // <-  error "ambiguous overload for 'operator='"
   // As a workaround, you need to replace by:
-  sensor = root["sensor"].as<String>();
+  sensor = obj["sensor"].as<String>();
 
   // You can set a String to a JsonObject or JsonArray:
   // WARNING: the content of the String will be duplicated in the JsonBuffer.
-  root["sensor"] = sensor;
+  obj["sensor"] = sensor;
 
   // It works with RawJson too:
-  root["sensor"] = RawJson(sensor);
+  obj["sensor"] = RawJson(sensor);
 
   // You can also concatenate strings
   // WARNING: the content of the String will be duplicated in the JsonBuffer.
-  root[String("sen") + "sor"] = String("gp") + "s";
+  obj[String("sen") + "sor"] = String("gp") + "s";
 
   // You can compare the content of a JsonObject with a String
-  if (root["sensor"] == sensor) {
+  if (obj["sensor"] == sensor) {
     // ...
   }
 
   // Lastly, you can print the resulting JSON to a String
   String output;
-  root.printTo(output);
+  serializeJson(doc, output);
 }
 
 void loop() {
@@ -71,4 +72,4 @@ void loop() {
 // The book "Mastering ArduinoJson" contains a quick C++ course that explains
 // how your microcontroller stores strings in memory. On several occasions, it
 // shows how you can avoid String in your program.
-// Please check it out at: https://arduinojson.org/book/
+// Please check it out at: https://arduinojson.org/book/

fuzzing/Makefile

@@ -5,15 +5,18 @@ CXXFLAGS += -I../src
 all: \
 	$(OUT)/json_fuzzer \
 	$(OUT)/json_fuzzer_seed_corpus.zip \
-	$(OUT)/json_fuzzer.options
+	$(OUT)/json_fuzzer.options \
+	$(OUT)/msgpack_fuzzer \
+	$(OUT)/msgpack_fuzzer_seed_corpus.zip \
+	$(OUT)/msgpack_fuzzer.options
 
-$(OUT)/json_fuzzer: fuzzer.cpp $(shell find ../src -type f)
+$(OUT)/%_fuzzer: %_fuzzer.cpp $(shell find ../src -type f)
 	$(CXX) $(CXXFLAGS) $< -o$@ $(LIB_FUZZING_ENGINE)
 
-$(OUT)/json_fuzzer_seed_corpus.zip: seed_corpus/*
+$(OUT)/%_fuzzer_seed_corpus.zip: %_seed_corpus/*
 	zip -j $@ $?
 
-$(OUT)/json_fuzzer.options:
+$(OUT)/%_fuzzer.options:
 	@echo "[libfuzzer]" > $@
 	@echo "max_len = 256" >> $@
 	@echo "timeout = 10" >> $@

fuzzing/fuzzer.cpp

@@ -1,26 +0,0 @@
-#include <ArduinoJson.h>
-
-class memstream : public std::istream {
-  struct membuf : std::streambuf {
-    membuf(const uint8_t *p, size_t l) {
-      setg((char *)p, (char *)p, (char *)p + l);
-    }
-  };
-  membuf _buffer;
-
- public:
-  memstream(const uint8_t *p, size_t l)
-      : std::istream(&_buffer), _buffer(p, l) {
-    rdbuf(&_buffer);
-  }
-};
-
-extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
-  DynamicJsonBuffer jsonBuffer;
-  memstream json(data, size);
-  JsonVariant variant = jsonBuffer.parse(json);
-  if (variant.success()) {
-    variant.as<std::string>();  // <- serialize to JSON
-  }
-  return 0;
-}

fuzzing/json_fuzzer.cpp

@@ -0,0 +1,11 @@
+#include <ArduinoJson.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  DynamicJsonDocument doc;
+  DeserializationError error = deserializeJson(doc, data, size);
+  if (!error) {
+    std::string json;
+    serializeJson(doc, json);
+  }
+  return 0;
+}

fuzzing/msgpack_corpus/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

fuzzing/msgpack_fuzzer.cpp

@@ -0,0 +1,11 @@
+#include <ArduinoJson.h>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+  DynamicJsonDocument doc;
+  DeserializationError error = deserializeMsgPack(doc, data, size);
+  if (!error) {
+    std::string json;
+    serializeMsgPack(doc, json);
+  }
+  return 0;
+}

fuzzing/msgpack_seed_corpus/false

@@ -0,0 +1 @@
+<EFBFBD>

fuzzing/msgpack_seed_corpus/fixarray

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD>hello<EFBFBD>world

fuzzing/msgpack_seed_corpus/fixint_negative

@@ -0,0 +1 @@
+<EFBFBD>

fuzzing/msgpack_seed_corpus/fixint_positive

@@ -0,0 +1 @@
+

fuzzing/msgpack_seed_corpus/fixmap

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD>one
<01>two

fuzzing/msgpack_seed_corpus/fixstr

@@ -0,0 +1 @@
+<EFBFBD>hello world

fuzzing/msgpack_seed_corpus/float32

@@ -0,0 +1 @@
+<EFBFBD>@H<><48>

fuzzing/msgpack_seed_corpus/float64

@@ -0,0 +1 @@
+<EFBFBD>@	!<21><><EFBFBD>o

fuzzing/msgpack_seed_corpus/int16

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD><EFBFBD>

fuzzing/msgpack_seed_corpus/int32

@@ -0,0 +1 @@
+Ҷi<EFBFBD>.

fuzzing/msgpack_seed_corpus/int64

@@ -0,0 +1 @@
+<EFBFBD>4Vx<56><78><EFBFBD><EFBFBD>

fuzzing/msgpack_seed_corpus/int8

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD>

fuzzing/msgpack_seed_corpus/nil

@@ -0,0 +1 @@
+<EFBFBD>

fuzzing/msgpack_seed_corpus/str8

@@ -0,0 +1 @@
+<EFBFBD>hello

fuzzing/msgpack_seed_corpus/true

@@ -0,0 +1 @@
+<EFBFBD>

fuzzing/msgpack_seed_corpus/uint16

@@ -0,0 +1 @@
+<EFBFBD>09

fuzzing/msgpack_seed_corpus/uint32

@@ -0,0 +1 @@
+<EFBFBD>4Vx

fuzzing/msgpack_seed_corpus/uint64

@@ -0,0 +1 @@
+<EFBFBD>4Vx<56><78><EFBFBD><EFBFBD>

fuzzing/msgpack_seed_corpus/uint8

@@ -0,0 +1 @@
+<EFBFBD><EFBFBD>

keywords.txt

@@ -1,15 +1,17 @@
+add	KEYWORD2
+as	KEYWORD2
+createNestedArray	KEYWORD2
+createNestedObject	KEYWORD2
+deserializeJson	KEYWORD2
+deserializeMsgPack	KEYWORD2
+DynamicJsonDocument	KEYWORD1
+get	KEYWORD2
 JsonArray	KEYWORD1
 JsonObject	KEYWORD1
 JsonVariant	KEYWORD1
-StaticJsonBuffer	KEYWORD1
-DynamicJsonBuffer	KEYWORD1
-add	KEYWORD2
-createArray	KEYWORD2
-createNestedArray	KEYWORD2
-createNestedObject	KEYWORD2
-createObject	KEYWORD2
-parseArray	KEYWORD2
-parseObject	KEYWORD2
-prettyPrintTo	KEYWORD2
-printTo	KEYWORD2
-success	KEYWORD2
+serializeMsgPack	KEYWORD2
+serializeJson	KEYWORD2
+serializeJsonPretty	KEYWORD2
+set	KEYWORD2
+StaticJsonDocument	KEYWORD1
+to	KEYWORD2

library.json

@@ -7,7 +7,7 @@
     "type": "git",
     "url": "https://github.com/bblanchon/ArduinoJson.git"
   },
-  "version": "5.13.2",
+  "version": "6.0.1-beta",
   "authors": {
     "name": "Benoit Blanchon",
     "url": "https://blog.benoitblanchon.fr"

library.properties

@@ -1,9 +1,9 @@
 name=ArduinoJson
-version=5.13.2
+version=6.0.1-beta
 author=Benoit Blanchon <blog.benoitblanchon.fr>
 maintainer=Benoit Blanchon <blog.benoitblanchon.fr>
 sentence=An efficient and elegant JSON library for Arduino.
-paragraph=ArduinoJson supports ✔ serialization, ✔ deserialization, ✔ fixed allocation, ✔ zero-copy, ✔ streams, and more. It is the most popular Arduino library on GitHub ❤❤❤❤❤. Check out arduinojson.org for a comprehensive documentation.
+paragraph=ArduinoJson supports ✔ serialization, ✔ deserialization, ✔ MessagePack, ✔ fixed allocation, ✔ zero-copy, ✔ streams, and more. It is the most popular Arduino library on GitHub ❤❤❤❤❤. Check out arduinojson.org for a comprehensive documentation.
 category=Data Processing
 url=https://arduinojson.org/?utm_source=meta&utm_medium=library.properties
 architectures=*

scripts/oss-fuzz/Vagrantfile

@@ -2,11 +2,16 @@
 Vagrant.configure(2) do |config|
   config.vm.box = "ubuntu/xenial64"
 
-  config.vm.synced_folder "E:\\Git\\Arduino\\libraries\\ArduinoJson", "/host/ArduinoJson"
+  config.vm.synced_folder "../..", "/host/ArduinoJson"
   config.vm.synced_folder "E:\\Git\\oss-fuzz", "/host/oss-fuzz"
 
   config.vm.network "forwarded_port", guest: 8001, host: 8001
 
+  config.vm.provider "virtualbox" do |v|
+    v.memory = 2048
+    v.cpus = 2
+  end
+
   config.vm.provision "shell", privileged: false, inline: <<-SHELL
     set -x
 
@@ -18,10 +23,6 @@ Vagrant.configure(2) do |config|
     git clone https://github.com/google/fuzzer-test-suite.git FTS
     ./FTS/tutorial/install-deps.sh  # Get deps
     ./FTS/tutorial/install-clang.sh # Get fresh clang binaries
-    # Get libFuzzer sources and build it
-    svn co http://llvm.org/svn/llvm-project/llvm/trunk/lib/Fuzzer
-    Fuzzer/build.sh
-    sudo mv libFuzzer.a /usr/local/lib/
 
     echo "export PROJECT_NAME='arduinojson'" >> $HOME/.profile
     echo "export CC='clang'" >> $HOME/.profile

scripts/travis/arduino.sh

@@ -1,4 +1,4 @@
-#!/bin/sh -eux
+#!/bin/bash -eux
 
 /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_1.pid --make-pidfile --background --exec /usr/bin/Xvfb -- :1 -ac -screen 0 1280x1024x16
 sleep 3
@@ -6,9 +6,13 @@ export DISPLAY=:1.0
 
 mkdir -p /tmp/arduino
 curl -sS http://downloads.arduino.cc/arduino-$VERSION-linux64.tar.xz | tar xJ -C /tmp/arduino --strip 1 ||
-curl -sS http://downloads.arduino.cc/arduino-$VERSION-linux64.tgz | tar xz -C /tmp/arduino --strip 1 
+curl -sS http://downloads.arduino.cc/arduino-$VERSION-linux64.tgz | tar xz -C /tmp/arduino --strip 1
 export PATH=$PATH:/tmp/arduino/
-  
+
+if [[ "$BOARD" =~ "arduino:samd:" ]]; then
+  arduino --install-boards arduino:samd
+fi
+
 ln -s $PWD /tmp/arduino/libraries/ArduinoJson
 
 for EXAMPLE in $PWD/examples/*/*.ino; do

scripts/travis/fuzz.sh

@@ -1,20 +1,26 @@
 #!/bin/bash -eux
 
 ROOT_DIR=$(dirname $0)/../../
-INCLUDE_DIR=$ROOT_DIR/src/
-FUZZING_DIR=$ROOT_DIR/fuzzing/
-JSON_CORPUS_DIR=$FUZZING_DIR/my_corpus
-JSON_SEED_CORPUS_DIR=$FUZZING_DIR/seed_corpus
-
-CXX="clang++-$CLANG"
+INCLUDE_DIR=${ROOT_DIR}/src/
+FUZZING_DIR=${ROOT_DIR}/fuzzing/
 CXXFLAGS="-g -fprofile-instr-generate -fcoverage-mapping -fsanitize=address,fuzzer"
 
-$CXX $CXXFLAGS -o json_fuzzer -I$INCLUDE_DIR $FUZZING_DIR/fuzzer.cpp
+fuzz() {
+	NAME="$1"
+	FUZZER="${NAME}_fuzzer"
+	FUZZER_CPP="${FUZZING_DIR}/${NAME}_fuzzer.cpp"
+	CORPUS_DIR="${FUZZING_DIR}/${NAME}_corpus"
+	SEED_CORPUS_DIR="${FUZZING_DIR}/${NAME}_seed_corpus"
 
-export ASAN_OPTIONS="detect_leaks=0"
-export LLVM_PROFILE_FILE="json_fuzzer.profraw"
-./json_fuzzer "$JSON_CORPUS_DIR" "$JSON_SEED_CORPUS_DIR" -max_total_time=60
+	clang++-${CLANG} ${CXXFLAGS} -o ${FUZZER} -I$INCLUDE_DIR ${FUZZER_CPP}
 
-llvm-profdata-$CLANG merge -sparse json_fuzzer.profraw -o json_fuzzer.profdata
+	export ASAN_OPTIONS="detect_leaks=0"
+	export LLVM_PROFILE_FILE="${FUZZER}.profraw"
+	./${FUZZER} "$CORPUS_DIR" "$SEED_CORPUS_DIR" -max_total_time=30
 
-llvm-cov-$CLANG report ./json_fuzzer -instr-profile=json_fuzzer.profdata
+	llvm-profdata-${CLANG} merge -sparse ${LLVM_PROFILE_FILE} -o ${FUZZER}.profdata
+	llvm-cov-${CLANG} report ./${FUZZER} -instr-profile=${FUZZER}.profdata
+}
+
+fuzz json
+fuzz msgpack

src/ArduinoJson.hpp

@@ -6,14 +6,14 @@
 
 #include "ArduinoJson/version.hpp"
 
-#include "ArduinoJson/DynamicJsonBuffer.hpp"
-#include "ArduinoJson/JsonArray.hpp"
-#include "ArduinoJson/JsonObject.hpp"
-#include "ArduinoJson/StaticJsonBuffer.hpp"
+#include "ArduinoJson/DynamicJsonDocument.hpp"
+#include "ArduinoJson/Json/JsonDeserializer.hpp"
+#include "ArduinoJson/Json/JsonSerializer.hpp"
+#include "ArduinoJson/Json/PrettyJsonSerializer.hpp"
+#include "ArduinoJson/MsgPack/MsgPackDeserializer.hpp"
+#include "ArduinoJson/MsgPack/MsgPackSerializer.hpp"
+#include "ArduinoJson/StaticJsonDocument.hpp"
 
-#include "ArduinoJson/Deserialization/JsonParserImpl.hpp"
 #include "ArduinoJson/JsonArrayImpl.hpp"
-#include "ArduinoJson/JsonBufferImpl.hpp"
 #include "ArduinoJson/JsonObjectImpl.hpp"
 #include "ArduinoJson/JsonVariantImpl.hpp"
-#include "ArduinoJson/Serialization/JsonSerializerImpl.hpp"

src/ArduinoJson/Configuration.hpp

@@ -130,11 +130,6 @@
 #endif
 #endif
 
-// Enable deprecated functions by default
-#ifndef ARDUINOJSON_ENABLE_DEPRECATED
-#define ARDUINOJSON_ENABLE_DEPRECATED 1
-#endif
-
 // Control the exponentiation threshold for big numbers
 // CAUTION: cannot be more that 1e9 !!!!
 #ifndef ARDUINOJSON_POSITIVE_EXPONENTIATION_THRESHOLD
@@ -149,3 +144,13 @@
 #if ARDUINOJSON_USE_LONG_LONG && ARDUINOJSON_USE_INT64
 #error ARDUINOJSON_USE_LONG_LONG and ARDUINOJSON_USE_INT64 cannot be set together
 #endif
+
+#ifndef ARDUINOJSON_LITTLE_ENDIAN
+#if defined(_MSC_VER) ||                                                      \
+    (defined(__BYTE_ORDER__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__) || \
+    (defined(__LITTLE_ENDIAN__))
+#define ARDUINOJSON_LITTLE_ENDIAN 1
+#else
+#define ARDUINOJSON_LITTLE_ENDIAN 0
+#endif
+#endif

src/ArduinoJson/Data/IsVariant.hpp

@@ -0,0 +1,17 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Polyfills/type_traits.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+class JsonVariantTag {};
+
+template <typename T>
+struct IsVariant : is_base_of<JsonVariantTag, T> {};
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Data/List.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include "../JsonBuffer.hpp"
+#include "../Memory/JsonBuffer.hpp"
 #include "ListConstIterator.hpp"
 #include "ListIterator.hpp"
 
@@ -27,7 +27,7 @@ class List {
   // When buffer is NULL, the List is not able to grow and success() returns
   // false. This is used to identify bad memory allocations and parsing
   // failures.
-  explicit List(JsonBuffer *buffer) : _buffer(buffer), _firstNode(NULL) {}
+  explicit List(JsonBuffer *buf) : _buffer(buf), _firstNode(NULL) {}
 
   // Returns true if the object is valid
   // Would return false in the following situation:
@@ -84,11 +84,19 @@ class List {
     }
   }
 
+  JsonBuffer &buffer() const {
+    return *_buffer;
+  }
+
  protected:
+  void clear() {
+    _firstNode = 0;
+  }
+
   JsonBuffer *_buffer;
 
  private:
   node_type *_firstNode;
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Data/ListNode.hpp

@@ -6,7 +6,7 @@
 
 #include <stddef.h>  // for NULL
 
-#include "JsonBufferAllocated.hpp"
+#include "../Memory/JsonBufferAllocated.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -20,5 +20,5 @@ struct ListNode : public Internals::JsonBufferAllocated {
   ListNode<T> *next;
   T content;
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Data/ValueSaver.hpp

@@ -4,10 +4,10 @@
 
 #pragma once
 
-#include "../JsonBuffer.hpp"
 #include "../JsonVariant.hpp"
-#include "../StringTraits/StringTraits.hpp"
-#include "../TypeTraits/EnableIf.hpp"
+#include "../Memory/JsonBuffer.hpp"
+#include "../Polyfills/type_traits.hpp"
+#include "../Strings/StringTraits.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -23,7 +23,7 @@ struct ValueSaver {
 
 template <typename Source>
 struct ValueSaver<
-    Source, typename EnableIf<StringTraits<Source>::should_duplicate>::type> {
+    Source, typename enable_if<StringTraits<Source>::should_duplicate>::type> {
   template <typename Destination>
   static bool save(JsonBuffer* buffer, Destination& dest, Source source) {
     if (!StringTraits<Source>::is_null(source)) {
@@ -41,12 +41,12 @@ struct ValueSaver<
 // const char*, const signed char*, const unsigned char*
 template <typename Char>
 struct ValueSaver<
-    Char*, typename EnableIf<!StringTraits<Char*>::should_duplicate>::type> {
+    Char*, typename enable_if<!StringTraits<Char*>::should_duplicate>::type> {
   template <typename Destination>
   static bool save(JsonBuffer*, Destination& dest, Char* source) {
     dest = reinterpret_cast<const char*>(source);
     return true;
   }
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Deserialization/ArduinoStreamReader.hpp

@@ -0,0 +1,41 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#if ARDUINOJSON_ENABLE_ARDUINO_STREAM
+
+#include <Stream.h>
+
+namespace ArduinoJson {
+namespace Internals {
+
+struct ArduinoStreamReader {
+  Stream& _stream;
+  char _current;
+  bool _ended;
+
+ public:
+  explicit ArduinoStreamReader(Stream& stream)
+      : _stream(stream), _current(0), _ended(false) {}
+
+  char read() {
+    // don't use _stream.read() as it ignores the timeout
+    char c = 0;
+    _ended = _stream.readBytes(&c, 1) == 0;
+    return c;
+  }
+
+  bool ended() const {
+    return _ended;
+  }
+};
+
+inline ArduinoStreamReader makeReader(Stream& input) {
+  return ArduinoStreamReader(input);
+}
+}  // namespace Internals
+}  // namespace ArduinoJson
+
+#endif

src/ArduinoJson/Deserialization/CharPointerReader.hpp

@@ -0,0 +1,64 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <typename TChar>
+class UnsafeCharPointerReader {
+  const TChar* _ptr;
+
+ public:
+  explicit UnsafeCharPointerReader(const TChar* ptr)
+      : _ptr(ptr ? ptr : reinterpret_cast<const TChar*>("")) {}
+
+  char read() {
+    return static_cast<char>(*_ptr++);
+  }
+
+  bool ended() const {
+    // we cannot know
+    return false;
+  }
+};
+
+template <typename TChar>
+class SafeCharPointerReader {
+  const TChar* _ptr;
+  const TChar* _end;
+
+ public:
+  explicit SafeCharPointerReader(const TChar* ptr, size_t len)
+      : _ptr(ptr ? ptr : reinterpret_cast<const TChar*>("")),
+        _end(_ptr + len) {}
+
+  char read() {
+    return static_cast<char>(*_ptr++);
+  }
+
+  bool ended() const {
+    return _ptr == _end;
+  }
+};
+
+template <typename TChar>
+inline UnsafeCharPointerReader<TChar> makeReader(TChar* input) {
+  return UnsafeCharPointerReader<TChar>(input);
+}
+
+template <typename TChar>
+inline SafeCharPointerReader<TChar> makeReader(TChar* input, size_t n) {
+  return SafeCharPointerReader<TChar>(input, n);
+}
+
+#if ARDUINOJSON_ENABLE_ARDUINO_STRING
+inline SafeCharPointerReader<char> makeReader(const String& input) {
+  return SafeCharPointerReader<char>(input.c_str(), input.length());
+}
+#endif
+
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Deserialization/Comments.hpp

@@ -1,61 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-namespace ArduinoJson {
-namespace Internals {
-template <typename TInput>
-void skipSpacesAndComments(TInput& input) {
-  for (;;) {
-    switch (input.current()) {
-      // spaces
-      case ' ':
-      case '\t':
-      case '\r':
-      case '\n':
-        input.move();
-        continue;
-
-      // comments
-      case '/':
-        switch (input.next()) {
-          // C-style block comment
-          case '*':
-            input.move();  // skip '/'
-            // no need to skip '*'
-            for (;;) {
-              input.move();
-              if (input.current() == '\0') return;
-              if (input.current() == '*' && input.next() == '/') {
-                input.move();  // skip '*'
-                input.move();  // skip '/'
-                break;
-              }
-            }
-            break;
-
-          // C++-style line comment
-          case '/':
-            // not need to skip "//"
-            for (;;) {
-              input.move();
-              if (input.current() == '\0') return;
-              if (input.current() == '\n') break;
-            }
-            break;
-
-          // not a comment, just a '/'
-          default:
-            return;
-        }
-        break;
-
-      default:
-        return;
-    }
-  }
-}
-}
-}

src/ArduinoJson/Deserialization/DeserializationError.hpp

@@ -0,0 +1,83 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#if ARDUINOJSON_ENABLE_STD_STREAM
+#include <ostream>
+#endif
+
+namespace ArduinoJson {
+
+class DeserializationError {
+ public:
+  enum Code {
+    Ok,
+    IncompleteInput,
+    InvalidInput,
+    NoMemory,
+    NotSupported,
+    TooDeep
+  };
+
+  DeserializationError() {}
+  DeserializationError(Code code) : _code(code) {}
+
+  friend bool operator==(const DeserializationError& err, Code code) {
+    return err._code == code;
+  }
+
+  friend bool operator==(Code code, const DeserializationError& err) {
+    return err._code == code;
+  }
+
+  friend bool operator!=(const DeserializationError& err, Code code) {
+    return err._code != code;
+  }
+
+  friend bool operator!=(Code code, const DeserializationError& err) {
+    return err._code != code;
+  }
+
+  operator bool() const {
+    return _code != Ok;
+  }
+
+  const char* c_str() const {
+    switch (_code) {
+      case Ok:
+        return "Ok";
+      case TooDeep:
+        return "TooDeep";
+      case NoMemory:
+        return "NoMemory";
+      case InvalidInput:
+        return "InvalidInput";
+      case IncompleteInput:
+        return "IncompleteInput";
+      case NotSupported:
+        return "NotSupported";
+      default:
+        return "???";
+    }
+  }
+
+ private:
+  Code _code;
+};
+
+#if ARDUINOJSON_ENABLE_STD_STREAM
+inline std::ostream& operator<<(std::ostream& s,
+                                const DeserializationError& e) {
+  s << e.c_str();
+  return s;
+}
+
+inline std::ostream& operator<<(std::ostream& s, DeserializationError::Code c) {
+  s << DeserializationError(c).c_str();
+  return s;
+}
+#endif
+
+}  // namespace ArduinoJson

src/ArduinoJson/Deserialization/FlashStringReader.hpp

@@ -0,0 +1,56 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#if ARDUINOJSON_ENABLE_PROGMEM
+
+namespace ArduinoJson {
+namespace Internals {
+class UnsafeFlashStringReader {
+  const char* _ptr;
+
+ public:
+  explicit UnsafeFlashStringReader(const __FlashStringHelper* ptr)
+      : _ptr(reinterpret_cast<const char*>(ptr)) {}
+
+  char read() {
+    return pgm_read_byte_near(_ptr++);
+  }
+
+  bool ended() const {
+    // this reader cannot detect the end
+    return false;
+  }
+};
+
+class SafeFlashStringReader {
+  const char* _ptr;
+  const char* _end;
+
+ public:
+  explicit SafeFlashStringReader(const __FlashStringHelper* ptr, size_t size)
+      : _ptr(reinterpret_cast<const char*>(ptr)), _end(_ptr + size) {}
+
+  char read() {
+    return pgm_read_byte_near(_ptr++);
+  }
+
+  bool ended() const {
+    return _ptr == _end;
+  }
+};
+
+inline UnsafeFlashStringReader makeReader(const __FlashStringHelper* input) {
+  return UnsafeFlashStringReader(input);
+}
+
+inline SafeFlashStringReader makeReader(const __FlashStringHelper* input,
+                                        size_t size) {
+  return SafeFlashStringReader(input, size);
+}
+}  // namespace Internals
+}  // namespace ArduinoJson
+
+#endif

src/ArduinoJson/Deserialization/IteratorReader.hpp

@@ -0,0 +1,34 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <typename TIterator>
+class IteratorReader {
+  TIterator _ptr, _end;
+
+ public:
+  explicit IteratorReader(TIterator begin, TIterator end)
+      : _ptr(begin), _end(end) {}
+
+  bool ended() const {
+    return _ptr == _end;
+  }
+
+  char read() {
+    return char(*_ptr++);
+  }
+};
+
+template <typename TInput>
+inline IteratorReader<typename TInput::const_iterator> makeReader(
+    const TInput& input) {
+  return IteratorReader<typename TInput::const_iterator>(input.begin(),
+                                                         input.end());
+}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Deserialization/JsonParser.hpp

@@ -1,102 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "../JsonBuffer.hpp"
-#include "../JsonVariant.hpp"
-#include "../TypeTraits/IsConst.hpp"
-#include "StringWriter.hpp"
-
-namespace ArduinoJson {
-namespace Internals {
-
-// Parse JSON string to create JsonArrays and JsonObjects
-// This internal class is not indended to be used directly.
-// Instead, use JsonBuffer.parseArray() or .parseObject()
-template <typename TReader, typename TWriter>
-class JsonParser {
- public:
-  JsonParser(JsonBuffer *buffer, TReader reader, TWriter writer,
-             uint8_t nestingLimit)
-      : _buffer(buffer),
-        _reader(reader),
-        _writer(writer),
-        _nestingLimit(nestingLimit) {}
-
-  JsonArray &parseArray();
-  JsonObject &parseObject();
-
-  JsonVariant parseVariant() {
-    JsonVariant result;
-    parseAnythingTo(&result);
-    return result;
-  }
-
- private:
-  JsonParser &operator=(const JsonParser &);  // non-copiable
-
-  static bool eat(TReader &, char charToSkip);
-  FORCE_INLINE bool eat(char charToSkip) {
-    return eat(_reader, charToSkip);
-  }
-
-  const char *parseString();
-  bool parseAnythingTo(JsonVariant *destination);
-
-  inline bool parseArrayTo(JsonVariant *destination);
-  inline bool parseObjectTo(JsonVariant *destination);
-  inline bool parseStringTo(JsonVariant *destination);
-
-  static inline bool isBetween(char c, char min, char max) {
-    return min <= c && c <= max;
-  }
-
-  static inline bool canBeInNonQuotedString(char c) {
-    return isBetween(c, '0', '9') || isBetween(c, '_', 'z') ||
-           isBetween(c, 'A', 'Z') || c == '+' || c == '-' || c == '.';
-  }
-
-  static inline bool isQuote(char c) {
-    return c == '\'' || c == '\"';
-  }
-
-  JsonBuffer *_buffer;
-  TReader _reader;
-  TWriter _writer;
-  uint8_t _nestingLimit;
-};
-
-template <typename TJsonBuffer, typename TString, typename Enable = void>
-struct JsonParserBuilder {
-  typedef typename StringTraits<TString>::Reader InputReader;
-  typedef JsonParser<InputReader, TJsonBuffer &> TParser;
-
-  static TParser makeParser(TJsonBuffer *buffer, TString &json,
-                            uint8_t nestingLimit) {
-    return TParser(buffer, InputReader(json), *buffer, nestingLimit);
-  }
-};
-
-template <typename TJsonBuffer, typename TChar>
-struct JsonParserBuilder<TJsonBuffer, TChar *,
-                         typename EnableIf<!IsConst<TChar>::value>::type> {
-  typedef typename StringTraits<TChar *>::Reader TReader;
-  typedef StringWriter<TChar> TWriter;
-  typedef JsonParser<TReader, TWriter> TParser;
-
-  static TParser makeParser(TJsonBuffer *buffer, TChar *json,
-                            uint8_t nestingLimit) {
-    return TParser(buffer, TReader(json), TWriter(json), nestingLimit);
-  }
-};
-
-template <typename TJsonBuffer, typename TString>
-inline typename JsonParserBuilder<TJsonBuffer, TString>::TParser makeParser(
-    TJsonBuffer *buffer, TString &json, uint8_t nestingLimit) {
-  return JsonParserBuilder<TJsonBuffer, TString>::makeParser(buffer, json,
-                                                             nestingLimit);
-}
-}  // namespace Internals
-}  // namespace ArduinoJson

src/ArduinoJson/Deserialization/JsonParserImpl.hpp

@@ -1,189 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "Comments.hpp"
-#include "JsonParser.hpp"
-
-template <typename TReader, typename TWriter>
-inline bool ArduinoJson::Internals::JsonParser<TReader, TWriter>::eat(
-    TReader &reader, char charToSkip) {
-  skipSpacesAndComments(reader);
-  if (reader.current() != charToSkip) return false;
-  reader.move();
-  return true;
-}
-
-template <typename TReader, typename TWriter>
-inline bool
-ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseAnythingTo(
-    JsonVariant *destination) {
-  skipSpacesAndComments(_reader);
-
-  switch (_reader.current()) {
-    case '[':
-      return parseArrayTo(destination);
-
-    case '{':
-      return parseObjectTo(destination);
-
-    default:
-      return parseStringTo(destination);
-  }
-}
-
-template <typename TReader, typename TWriter>
-inline ArduinoJson::JsonArray &
-ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseArray() {
-  if (_nestingLimit == 0) return JsonArray::invalid();
-  _nestingLimit--;
-
-  // Create an empty array
-  JsonArray &array = _buffer->createArray();
-
-  // Check opening braket
-  if (!eat('[')) goto ERROR_MISSING_BRACKET;
-  if (eat(']')) goto SUCCESS_EMPTY_ARRAY;
-
-  // Read each value
-  for (;;) {
-    // 1 - Parse value
-    JsonVariant value;
-    if (!parseAnythingTo(&value)) goto ERROR_INVALID_VALUE;
-    if (!array.add(value)) goto ERROR_NO_MEMORY;
-
-    // 2 - More values?
-    if (eat(']')) goto SUCCES_NON_EMPTY_ARRAY;
-    if (!eat(',')) goto ERROR_MISSING_COMMA;
-  }
-
-SUCCESS_EMPTY_ARRAY:
-SUCCES_NON_EMPTY_ARRAY:
-  _nestingLimit++;
-  return array;
-
-ERROR_INVALID_VALUE:
-ERROR_MISSING_BRACKET:
-ERROR_MISSING_COMMA:
-ERROR_NO_MEMORY:
-  return JsonArray::invalid();
-}
-
-template <typename TReader, typename TWriter>
-inline bool ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseArrayTo(
-    JsonVariant *destination) {
-  JsonArray &array = parseArray();
-  if (!array.success()) return false;
-
-  *destination = array;
-  return true;
-}
-
-template <typename TReader, typename TWriter>
-inline ArduinoJson::JsonObject &
-ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseObject() {
-  if (_nestingLimit == 0) return JsonObject::invalid();
-  _nestingLimit--;
-
-  // Create an empty object
-  JsonObject &object = _buffer->createObject();
-
-  // Check opening brace
-  if (!eat('{')) goto ERROR_MISSING_BRACE;
-  if (eat('}')) goto SUCCESS_EMPTY_OBJECT;
-
-  // Read each key value pair
-  for (;;) {
-    // 1 - Parse key
-    const char *key = parseString();
-    if (!key) goto ERROR_INVALID_KEY;
-    if (!eat(':')) goto ERROR_MISSING_COLON;
-
-    // 2 - Parse value
-    JsonVariant value;
-    if (!parseAnythingTo(&value)) goto ERROR_INVALID_VALUE;
-    if (!object.set(key, value)) goto ERROR_NO_MEMORY;
-
-    // 3 - More keys/values?
-    if (eat('}')) goto SUCCESS_NON_EMPTY_OBJECT;
-    if (!eat(',')) goto ERROR_MISSING_COMMA;
-  }
-
-SUCCESS_EMPTY_OBJECT:
-SUCCESS_NON_EMPTY_OBJECT:
-  _nestingLimit++;
-  return object;
-
-ERROR_INVALID_KEY:
-ERROR_INVALID_VALUE:
-ERROR_MISSING_BRACE:
-ERROR_MISSING_COLON:
-ERROR_MISSING_COMMA:
-ERROR_NO_MEMORY:
-  return JsonObject::invalid();
-}
-
-template <typename TReader, typename TWriter>
-inline bool ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseObjectTo(
-    JsonVariant *destination) {
-  JsonObject &object = parseObject();
-  if (!object.success()) return false;
-
-  *destination = object;
-  return true;
-}
-
-template <typename TReader, typename TWriter>
-inline const char *
-ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseString() {
-  typename RemoveReference<TWriter>::type::String str = _writer.startString();
-
-  skipSpacesAndComments(_reader);
-  char c = _reader.current();
-
-  if (isQuote(c)) {  // quotes
-    _reader.move();
-    char stopChar = c;
-    for (;;) {
-      c = _reader.current();
-      if (c == '\0') break;
-      _reader.move();
-
-      if (c == stopChar) break;
-
-      if (c == '\\') {
-        // replace char
-        c = Encoding::unescapeChar(_reader.current());
-        if (c == '\0') break;
-        _reader.move();
-      }
-
-      str.append(c);
-    }
-  } else {  // no quotes
-    for (;;) {
-      if (!canBeInNonQuotedString(c)) break;
-      _reader.move();
-      str.append(c);
-      c = _reader.current();
-    }
-  }
-
-  return str.c_str();
-}
-
-template <typename TReader, typename TWriter>
-inline bool ArduinoJson::Internals::JsonParser<TReader, TWriter>::parseStringTo(
-    JsonVariant *destination) {
-  bool hasQuotes = isQuote(_reader.current());
-  const char *value = parseString();
-  if (value == NULL) return false;
-  if (hasQuotes) {
-    *destination = value;
-  } else {
-    *destination = RawJson(value);
-  }
-  return true;
-}

src/ArduinoJson/Deserialization/StdStreamReader.hpp

@@ -0,0 +1,40 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#if ARDUINOJSON_ENABLE_STD_STREAM
+
+#include <istream>
+
+namespace ArduinoJson {
+namespace Internals {
+
+class StdStreamReader {
+  std::istream& _stream;
+  char _current;
+
+ public:
+  explicit StdStreamReader(std::istream& stream)
+      : _stream(stream), _current(0) {}
+
+  bool ended() const {
+    return _stream.eof();
+  }
+
+  char read() {
+    return static_cast<char>(_stream.get());
+  }
+
+ private:
+  StdStreamReader& operator=(const StdStreamReader&);  // Visual Studio C4512
+};
+
+inline StdStreamReader makeReader(std::istream& input) {
+  return StdStreamReader(input);
+}
+}  // namespace Internals
+}  // namespace ArduinoJson
+
+#endif

src/ArduinoJson/Deserialization/deserialize.hpp

@@ -0,0 +1,82 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../StringStorage/StringStorage.hpp"
+#include "./ArduinoStreamReader.hpp"
+#include "./CharPointerReader.hpp"
+#include "./DeserializationError.hpp"
+#include "./FlashStringReader.hpp"
+#include "./IteratorReader.hpp"
+#include "./StdStreamReader.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <template <typename, typename> class TDeserializer,
+          typename TJsonBuffer, typename TReader, typename TWriter>
+TDeserializer<TReader, TWriter> makeDeserializer(TJsonBuffer *buffer,
+                                                 TReader reader, TWriter writer,
+                                                 uint8_t nestingLimit) {
+  return TDeserializer<TReader, TWriter>(buffer, reader, writer, nestingLimit);
+}
+
+// DeserializationError deserialize(TDocument& doc, TString input);
+// TDocument = DynamicJsonDocument, StaticJsonDocument
+// TString = const std::string&, const String&
+template <template <typename, typename> class TDeserializer, typename TDocument,
+          typename TString>
+typename Internals::enable_if<!Internals::is_array<TString>::value,
+                              DeserializationError>::type
+deserialize(TDocument &doc, const TString &input) {
+  using namespace Internals;
+  return makeDeserializer<TDeserializer>(&doc.buffer(), makeReader(input),
+                                         makeStringStorage(doc.buffer(), input),
+                                         doc.nestingLimit)
+      .parse(doc.template to<JsonVariant>());
+}
+//
+// DeserializationError deserialize(TDocument& doc, TChar* input);
+// TDocument = DynamicJsonDocument, StaticJsonDocument
+// TChar* = char*, const char*, const FlashStringHelper*
+template <template <typename, typename> class TDeserializer, typename TDocument,
+          typename TChar>
+DeserializationError deserialize(TDocument &doc, TChar *input) {
+  using namespace Internals;
+  return makeDeserializer<TDeserializer>(&doc.buffer(), makeReader(input),
+                                         makeStringStorage(doc.buffer(), input),
+                                         doc.nestingLimit)
+      .parse(doc.template to<JsonVariant>());
+}
+//
+// DeserializationError deserialize(TDocument& doc, TChar* input, size_t
+// inputSize);
+// TDocument = DynamicJsonDocument, StaticJsonDocument
+// TChar* = char*, const char*, const FlashStringHelper*
+template <template <typename, typename> class TDeserializer, typename TDocument,
+          typename TChar>
+DeserializationError deserialize(TDocument &doc, TChar *input,
+                                 size_t inputSize) {
+  using namespace Internals;
+  return makeDeserializer<TDeserializer>(
+             &doc.buffer(), makeReader(input, inputSize),
+             makeStringStorage(doc.buffer(), input), doc.nestingLimit)
+      .parse(doc.template to<JsonVariant>());
+}
+//
+// DeserializationError deserialize(TDocument& doc, TStream input);
+// TDocument = DynamicJsonDocument, StaticJsonDocument
+// TStream = std::istream&, Stream&
+template <template <typename, typename> class TDeserializer, typename TDocument,
+          typename TStream>
+DeserializationError deserialize(TDocument &doc, TStream &input) {
+  using namespace Internals;
+  return makeDeserializer<TDeserializer>(&doc.buffer(), makeReader(input),
+                                         makeStringStorage(doc.buffer(), input),
+                                         doc.nestingLimit)
+      .parse(doc.template to<JsonVariant>());
+}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/DynamicJsonDocument.hpp

@@ -0,0 +1,86 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "JsonArray.hpp"
+#include "JsonObject.hpp"
+#include "JsonVariant.hpp"
+#include "Memory/DynamicJsonBuffer.hpp"
+
+namespace ArduinoJson {
+
+class DynamicJsonDocument {
+  Internals::DynamicJsonBuffer _buffer;
+  JsonVariant _root;
+
+ public:
+  uint8_t nestingLimit;
+
+  DynamicJsonDocument() : nestingLimit(ARDUINOJSON_DEFAULT_NESTING_LIMIT) {}
+  DynamicJsonDocument(size_t capacity)
+      : _buffer(capacity), nestingLimit(ARDUINOJSON_DEFAULT_NESTING_LIMIT) {}
+
+  template <typename T>
+  bool is() const {
+    return _root.is<T>();
+  }
+
+  template <typename T>
+  typename Internals::JsonVariantAs<T>::type as() const {
+    return _root.as<T>();
+  }
+
+  // JsonObject& to<JsonObject>()
+  template <typename T>
+  typename Internals::enable_if<Internals::is_same<T, JsonObject>::value,
+                                JsonObject&>::type
+  to() {
+    clear();
+    JsonObject* object = new (&_buffer) JsonObject(&_buffer);
+    if (!object) return JsonObject::invalid();
+    _root = object;
+    return *object;
+  }
+
+  // JsonArray& to<JsonArray>()
+  template <typename T>
+  typename Internals::enable_if<Internals::is_same<T, JsonArray>::value,
+                                JsonArray&>::type
+  to() {
+    clear();
+    JsonArray* array = new (&_buffer) JsonArray(&_buffer);
+    if (!array) return JsonArray::invalid();
+    _root = array;
+    return *array;
+  }
+
+  // JsonVariant& to<JsonVariant>()
+  template <typename T>
+  typename Internals::enable_if<Internals::is_same<T, JsonVariant>::value,
+                                T&>::type
+  to() {
+    clear();
+    return _root;
+  }
+
+  Internals::DynamicJsonBuffer& buffer() {
+    return _buffer;
+  }
+
+  void clear() {
+    _buffer.clear();
+    _root = JsonVariant();
+  }
+
+  size_t memoryUsage() const {
+    return _buffer.size();
+  }
+
+  template <typename Visitor>
+  void visit(Visitor& visitor) const {
+    return _root.visit(visitor);
+  }
+};
+}  // namespace ArduinoJson

src/ArduinoJson/Json/EscapeSequence.hpp

@@ -7,7 +7,7 @@
 namespace ArduinoJson {
 namespace Internals {
 
-class Encoding {
+class EscapeSequence {
  public:
   // Optimized for code size on a 8-bit AVR
   static char escapeChar(char c) {
@@ -33,5 +33,5 @@ class Encoding {
     return &"\"\"\\\\b\bf\fn\nr\rt\t"[excludeIdenticals ? 4 : 0];
   }
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Json/IndentedPrint.hpp

@@ -8,7 +8,7 @@ namespace ArduinoJson {
 namespace Internals {
 
 // Decorator on top of Print to allow indented output.
-// This class is used by JsonPrintable::prettyPrintTo() but can also be used
+// This class is used by serializeJsonPretty() but can also be used
 // for your own purpose, like logging.
 template <typename Print>
 class IndentedPrint {
@@ -64,5 +64,5 @@ class IndentedPrint {
   static const int MAX_LEVEL = 15;    // because it's only 4 bits
   static const int MAX_TAB_SIZE = 7;  // because it's only 3 bits
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Json/JsonDeserializer.hpp

@@ -0,0 +1,318 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Deserialization/deserialize.hpp"
+#include "../JsonVariant.hpp"
+#include "../Memory/JsonBuffer.hpp"
+#include "../Polyfills/type_traits.hpp"
+#include "./EscapeSequence.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <typename TReader, typename TStringStorage>
+class JsonDeserializer {
+ public:
+  JsonDeserializer(JsonBuffer *buffer, TReader reader,
+                   TStringStorage stringStorage, uint8_t nestingLimit)
+      : _buffer(buffer),
+        _reader(reader),
+        _stringStorage(stringStorage),
+        _nestingLimit(nestingLimit),
+        _loaded(false) {}
+  DeserializationError parse(JsonVariant &variant) {
+    DeserializationError err = skipSpacesAndComments();
+    if (err) return err;
+
+    switch (current()) {
+      case '[':
+        return parseArray(variant);
+
+      case '{':
+        return parseObject(variant);
+
+      default:
+        return parseValue(variant);
+    }
+  }
+
+ private:
+  JsonDeserializer &operator=(const JsonDeserializer &);  // non-copiable
+
+  char current() {
+    if (!_loaded) {
+      if (_reader.ended())
+        _current = 0;
+      else
+        _current = _reader.read();
+      _loaded = true;
+    }
+    return _current;
+  }
+
+  void move() {
+    _loaded = false;
+  }
+
+  FORCE_INLINE bool eat(char charToSkip) {
+    if (current() != charToSkip) return false;
+    move();
+    return true;
+  }
+
+  DeserializationError parseArray(JsonVariant &variant) {
+    if (_nestingLimit == 0) return DeserializationError::TooDeep;
+
+    JsonArray *array = new (_buffer) JsonArray(_buffer);
+    if (!array) return DeserializationError::NoMemory;
+    variant = array;
+
+    // Check opening braket
+    if (!eat('[')) return DeserializationError::InvalidInput;
+
+    // Skip spaces
+    DeserializationError err = skipSpacesAndComments();
+    if (err) return err;
+
+    // Empty array?
+    if (eat(']')) return DeserializationError::Ok;
+
+    // Read each value
+    for (;;) {
+      // 1 - Parse value
+      JsonVariant value;
+      _nestingLimit--;
+      err = parse(value);
+      _nestingLimit++;
+      if (err) return err;
+      if (!array->add(value)) return DeserializationError::NoMemory;
+
+      // 2 - Skip spaces
+      err = skipSpacesAndComments();
+      if (err) return err;
+
+      // 3 - More values?
+      if (eat(']')) return DeserializationError::Ok;
+      if (!eat(',')) return DeserializationError::InvalidInput;
+    }
+  }
+
+  DeserializationError parseObject(JsonVariant &variant) {
+    if (_nestingLimit == 0) return DeserializationError::TooDeep;
+
+    JsonObject *object = new (_buffer) JsonObject(_buffer);
+    if (!object) return DeserializationError::NoMemory;
+    variant = object;
+
+    // Check opening brace
+    if (!eat('{')) return DeserializationError::InvalidInput;
+
+    // Skip spaces
+    DeserializationError err = skipSpacesAndComments();
+    if (err) return err;
+
+    // Empty object?
+    if (eat('}')) return DeserializationError::Ok;
+
+    // Read each key value pair
+    for (;;) {
+      // Parse key
+      const char *key;
+      err = parseString(&key);
+      if (err) return err;
+
+      // Skip spaces
+      err = skipSpacesAndComments();
+      if (err) return err;
+
+      // Colon
+      if (!eat(':')) return DeserializationError::InvalidInput;
+
+      // Parse value
+      JsonVariant value;
+      _nestingLimit--;
+      err = parse(value);
+      _nestingLimit++;
+      if (err) return err;
+      if (!object->set(key, value)) return DeserializationError::NoMemory;
+
+      // Skip spaces
+      err = skipSpacesAndComments();
+      if (err) return err;
+
+      // More keys/values?
+      if (eat('}')) return DeserializationError::Ok;
+      if (!eat(',')) return DeserializationError::InvalidInput;
+
+      // Skip spaces
+      err = skipSpacesAndComments();
+      if (err) return err;
+    }
+  }
+
+  DeserializationError parseValue(JsonVariant &variant) {
+    bool hasQuotes = isQuote(current());
+    const char *value;
+    DeserializationError error = parseString(&value);
+    if (error) return error;
+    if (hasQuotes) {
+      variant = value;
+    } else {
+      variant = RawJson(value);
+    }
+    return DeserializationError::Ok;
+  }
+
+  DeserializationError parseString(const char **result) {
+    typename remove_reference<TStringStorage>::type::String str =
+        _stringStorage.startString();
+
+    char c = current();
+    if (c == '\0') return DeserializationError::IncompleteInput;
+
+    if (isQuote(c)) {  // quotes
+      move();
+      char stopChar = c;
+      for (;;) {
+        c = current();
+        move();
+        if (c == stopChar) break;
+
+        if (c == '\0') return DeserializationError::IncompleteInput;
+
+        if (c == '\\') {
+          c = current();
+          if (c == '\0') return DeserializationError::IncompleteInput;
+          if (c == 'u') return DeserializationError::NotSupported;
+          // replace char
+          c = EscapeSequence::unescapeChar(c);
+          if (c == '\0') return DeserializationError::InvalidInput;
+          move();
+        }
+
+        str.append(c);
+      }
+    } else if (canBeInNonQuotedString(c)) {  // no quotes
+      do {
+        move();
+        str.append(c);
+        c = current();
+      } while (canBeInNonQuotedString(c));
+    } else {
+      return DeserializationError::InvalidInput;
+    }
+
+    *result = str.c_str();
+    if (*result == NULL) return DeserializationError::NoMemory;
+    return DeserializationError::Ok;
+  }
+
+  static inline bool isBetween(char c, char min, char max) {
+    return min <= c && c <= max;
+  }
+
+  static inline bool canBeInNonQuotedString(char c) {
+    return isBetween(c, '0', '9') || isBetween(c, '_', 'z') ||
+           isBetween(c, 'A', 'Z') || c == '+' || c == '-' || c == '.';
+  }
+
+  static inline bool isQuote(char c) {
+    return c == '\'' || c == '\"';
+  }
+
+  DeserializationError skipSpacesAndComments() {
+    for (;;) {
+      switch (current()) {
+        // end of string
+        case '\0':
+          return DeserializationError::IncompleteInput;
+
+        // spaces
+        case ' ':
+        case '\t':
+        case '\r':
+        case '\n':
+          move();
+          continue;
+
+        // comments
+        case '/':
+          move();  // skip '/'
+          switch (current()) {
+            // block comment
+            case '*': {
+              move();  // skip '*'
+              bool wasStar = false;
+              for (;;) {
+                char c = current();
+                if (c == '\0') return DeserializationError::IncompleteInput;
+                if (c == '/' && wasStar) {
+                  move();
+                  break;
+                }
+                wasStar = c == '*';
+                move();
+              }
+              break;
+            }
+
+            // trailing comment
+            case '/':
+              // no need to skip "//"
+              for (;;) {
+                move();
+                char c = current();
+                if (c == '\0') return DeserializationError::IncompleteInput;
+                if (c == '\n') break;
+              }
+              break;
+
+            // not a comment, just a '/'
+            default:
+              return DeserializationError::InvalidInput;
+          }
+          break;
+
+        default:
+          return DeserializationError::Ok;
+      }
+    }
+  }
+
+  JsonBuffer *_buffer;
+  TReader _reader;
+  TStringStorage _stringStorage;
+  uint8_t _nestingLimit;
+  char _current;
+  bool _loaded;
+};
+}  // namespace Internals
+
+template <typename TDocument, typename TInput>
+DeserializationError deserializeJson(TDocument &doc, const TInput &input) {
+  using namespace Internals;
+  return deserialize<JsonDeserializer>(doc, input);
+}
+
+template <typename TDocument, typename TInput>
+DeserializationError deserializeJson(TDocument &doc, TInput *input) {
+  using namespace Internals;
+  return deserialize<JsonDeserializer>(doc, input);
+}
+
+template <typename TDocument, typename TInput>
+DeserializationError deserializeJson(TDocument &doc, TInput *input,
+                                     size_t inputSize) {
+  using namespace Internals;
+  return deserialize<JsonDeserializer>(doc, input, inputSize);
+}
+
+template <typename TDocument, typename TInput>
+DeserializationError deserializeJson(TDocument &doc, TInput &input) {
+  using namespace Internals;
+  return deserialize<JsonDeserializer>(doc, input);
+}
+}  // namespace ArduinoJson

src/ArduinoJson/Json/JsonSerializer.hpp

@@ -0,0 +1,139 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Serialization/measure.hpp"
+#include "../Serialization/serialize.hpp"
+#include "./JsonWriter.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <typename TPrint>
+class JsonSerializer {
+ public:
+  JsonSerializer(TPrint &destination) : _writer(destination) {}
+
+  void acceptFloat(JsonFloat value) {
+    _writer.writeFloat(value);
+  }
+
+  void acceptArray(const JsonArray &array) {
+    _writer.beginArray();
+
+    JsonArray::const_iterator it = array.begin();
+    while (it != array.end()) {
+      it->visit(*this);
+
+      ++it;
+      if (it == array.end()) break;
+
+      _writer.writeComma();
+    }
+
+    _writer.endArray();
+  }
+
+  void acceptObject(const JsonObject &object) {
+    _writer.beginObject();
+
+    JsonObject::const_iterator it = object.begin();
+    while (it != object.end()) {
+      _writer.writeString(it->key);
+      _writer.writeColon();
+      it->value.visit(*this);
+
+      ++it;
+      if (it == object.end()) break;
+
+      _writer.writeComma();
+    }
+
+    _writer.endObject();
+  }
+
+  void acceptString(const char *value) {
+    _writer.writeString(value);
+  }
+
+  void acceptRawJson(const char *value) {
+    _writer.writeRaw(value);
+  }
+
+  void acceptNegativeInteger(JsonUInt value) {
+    _writer.writeRaw('-');
+    _writer.writeInteger(value);
+  }
+
+  void acceptPositiveInteger(JsonUInt value) {
+    _writer.writeInteger(value);
+  }
+
+  void acceptBoolean(bool value) {
+    _writer.writeBoolean(value);
+  }
+
+  void acceptUndefined() {}
+
+  size_t bytesWritten() const {
+    return _writer.bytesWritten();
+  }
+
+ private:
+  JsonWriter<TPrint> _writer;
+};
+
+}  // namespace Internals
+
+template <typename TSource, typename TDestination>
+size_t serializeJson(TSource &source, TDestination &destination) {
+  using namespace Internals;
+  return serialize<JsonSerializer>(source, destination);
+}
+
+template <typename TSource>
+size_t serializeJson(const TSource &source, char *buffer, size_t bufferSize) {
+  using namespace Internals;
+  return serialize<JsonSerializer>(source, buffer, bufferSize);
+}
+
+template <typename TSource>
+size_t measureJson(const TSource &source) {
+  using namespace Internals;
+  return measure<JsonSerializer>(source);
+}
+
+#if ARDUINOJSON_ENABLE_STD_STREAM
+inline std::ostream &operator<<(std::ostream &os, const JsonArray &source) {
+  serializeJson(source, os);
+  return os;
+}
+inline std::ostream &operator<<(std::ostream &os, const JsonObject &source) {
+  serializeJson(source, os);
+  return os;
+}
+inline std::ostream &operator<<(std::ostream &os, const JsonVariant &source) {
+  serializeJson(source, os);
+  return os;
+}
+
+namespace Internals {
+inline std::ostream &operator<<(std::ostream &os,
+                                const JsonArraySubscript &source) {
+  serializeJson(source, os);
+  return os;
+}
+
+template <typename TKey>
+inline std::ostream &operator<<(std::ostream &os,
+                                const JsonObjectSubscript<TKey> &source) {
+  serializeJson(source, os);
+  return os;
+}
+}  // namespace Internals
+
+#endif
+
+}  // namespace ArduinoJson

src/ArduinoJson/Json/JsonWriter.hpp

@@ -5,10 +5,10 @@
 #pragma once
 
 #include <stdint.h>
-#include "../Data/Encoding.hpp"
 #include "../Data/JsonInteger.hpp"
+#include "../Numbers/FloatParts.hpp"
 #include "../Polyfills/attributes.hpp"
-#include "../Serialization/FloatParts.hpp"
+#include "./EscapeSequence.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -26,8 +26,6 @@ class JsonWriter {
   explicit JsonWriter(Print &sink) : _sink(sink), _length(0) {}
 
   // Returns the number of bytes sent to the Print implementation.
-  // This is very handy for implementations of printTo() that must return the
-  // number of bytes written.
   size_t bytesWritten() const {
     return _length;
   }
@@ -68,7 +66,7 @@ class JsonWriter {
   }
 
   void writeChar(char c) {
-    char specialChar = Encoding::escapeChar(c);
+    char specialChar = EscapeSequence::escapeChar(c);
     if (specialChar) {
       writeRaw('\\');
       writeRaw(specialChar);
@@ -79,14 +77,14 @@ class JsonWriter {
 
   template <typename TFloat>
   void writeFloat(TFloat value) {
-    if (isNaN(value)) return writeRaw("NaN");
+    if (isnan(value)) return writeRaw("NaN");
 
     if (value < 0.0) {
       writeRaw('-');
       value = -value;
     }
 
-    if (isInfinity(value)) return writeRaw("Infinity");
+    if (isinf(value)) return writeRaw("Infinity");
 
     FloatParts<TFloat> parts(value);
 
@@ -151,5 +149,5 @@ class JsonWriter {
  private:
   JsonWriter &operator=(const JsonWriter &);  // cannot be assigned
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Json/PrettyJsonSerializer.hpp

@@ -0,0 +1,57 @@
+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+#include "../Serialization/measure.hpp"
+#include "../Serialization/serialize.hpp"
+#include "./IndentedPrint.hpp"
+#include "./JsonSerializer.hpp"
+#include "./Prettyfier.hpp"
+
+namespace ArduinoJson {
+namespace Internals {
+
+template <typename TPrint>
+class PrettyJsonSerializer_Base {
+ public:
+  PrettyJsonSerializer_Base(TPrint &output)
+      : _indentedPrint(output), _prettyfier(_indentedPrint) {}
+
+ protected:
+  IndentedPrint<TPrint> _indentedPrint;
+  Prettyfier<TPrint> _prettyfier;
+};
+
+template <typename TPrint>
+class PrettyJsonSerializer : PrettyJsonSerializer_Base<TPrint>,
+                             public JsonSerializer<Prettyfier<TPrint> > {
+ public:
+  PrettyJsonSerializer(TPrint &output)
+      : PrettyJsonSerializer_Base<TPrint>(output),
+        JsonSerializer<Prettyfier<TPrint> >(
+            PrettyJsonSerializer_Base<TPrint>::_prettyfier) {}
+};
+}  // namespace Internals
+
+template <typename TSource, typename TDestination>
+size_t serializeJsonPretty(TSource &source, TDestination &destination) {
+  using namespace Internals;
+  return serialize<PrettyJsonSerializer>(source, destination);
+}
+
+template <typename TSource>
+size_t serializeJsonPretty(const TSource &source, char *buffer,
+                           size_t bufferSize) {
+  using namespace Internals;
+  return serialize<PrettyJsonSerializer>(source, buffer, bufferSize);
+}
+
+template <typename TSource>
+size_t measureJsonPretty(const TSource &source) {
+  using namespace Internals;
+  return measure<PrettyJsonSerializer>(source);
+}
+
+}  // namespace ArduinoJson

src/ArduinoJson/JsonArray.hpp

@@ -4,17 +4,13 @@
 
 #pragma once
 
-#include "Data/JsonBufferAllocated.hpp"
 #include "Data/List.hpp"
 #include "Data/ReferenceType.hpp"
 #include "Data/ValueSaver.hpp"
 #include "JsonVariant.hpp"
-#include "Serialization/JsonPrintable.hpp"
-#include "StringTraits/StringTraits.hpp"
-#include "TypeTraits/EnableIf.hpp"
-#include "TypeTraits/IsArray.hpp"
-#include "TypeTraits/IsFloatingPoint.hpp"
-#include "TypeTraits/IsSame.hpp"
+#include "Memory/JsonBufferAllocated.hpp"
+#include "Polyfills/type_traits.hpp"
+#include "Strings/StringTraits.hpp"
 
 // Returns the size (in bytes) of an array with n elements.
 // Can be very handy to determine the size of a StaticJsonBuffer.
@@ -30,23 +26,13 @@ namespace Internals {
 class JsonArraySubscript;
 }
 
-// An array of JsonVariant.
-//
-// The constructor is private, instances must be created via
-// JsonBuffer::createArray() or JsonBuffer::parseArray().
-// A JsonArray can be serialized to a JSON string via JsonArray::printTo().
-// It can also be deserialized from a JSON string via JsonBuffer::parseArray().
-class JsonArray : public Internals::JsonPrintable<JsonArray>,
-                  public Internals::ReferenceType,
+class JsonArray : public Internals::ReferenceType,
                   public Internals::NonCopyable,
                   public Internals::List<JsonVariant>,
                   public Internals::JsonBufferAllocated {
  public:
-  // Create an empty JsonArray attached to the specified JsonBuffer.
-  // You should not call this constructor directly.
-  // Instead, use JsonBuffer::createArray() or JsonBuffer::parseArray().
-  explicit JsonArray(JsonBuffer *buffer) throw()
-      : Internals::List<JsonVariant>(buffer) {}
+  explicit JsonArray(Internals::JsonBuffer *buf) throw()
+      : Internals::List<JsonVariant>(buf) {}
 
   // Gets the value at the specified index
   const Internals::JsonArraySubscript operator[](size_t index) const;
@@ -99,7 +85,8 @@ class JsonArray : public Internals::JsonPrintable<JsonArray>,
   // bool set(size_t index, TValue value, uint8_t decimals);
   // TValue = float, double
   template <typename T>
-  typename Internals::EnableIf<Internals::IsFloatingPoint<T>::value, bool>::type
+  typename Internals::enable_if<Internals::is_floating_point<T>::value,
+                                bool>::type
   set(size_t index, T value, uint8_t decimals) {
     return set_impl<const JsonVariant &>(index, JsonVariant(value, decimals));
   }
@@ -119,11 +106,9 @@ class JsonArray : public Internals::JsonPrintable<JsonArray>,
   }
 
   // Creates a JsonArray and adds a reference at the end of the array.
-  // It's a shortcut for JsonBuffer::createArray() and JsonArray::add()
   JsonArray &createNestedArray();
 
   // Creates a JsonObject and adds a reference at the end of the array.
-  // It's a shortcut for JsonBuffer::createObject() and JsonArray::add()
   JsonObject &createNestedObject();
 
   // Removes element at specified index.
@@ -193,12 +178,10 @@ class JsonArray : public Internals::JsonPrintable<JsonArray>,
     }
   }
 
-#if ARDUINOJSON_ENABLE_DEPRECATED
-  DEPRECATED("use remove() instead")
-  FORCE_INLINE void removeAt(size_t index) {
-    return remove(index);
+  template <typename Visitor>
+  void visit(Visitor &visitor) const {
+    return visitor.acceptArray(*this);
   }
-#endif
 
  private:
   template <typename TValueRef>
@@ -223,5 +206,5 @@ struct JsonVariantDefault<JsonArray> {
     return JsonArray::invalid();
   }
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/JsonArrayImpl.hpp

@@ -11,16 +11,18 @@
 namespace ArduinoJson {
 
 inline JsonArray &JsonArray::createNestedArray() {
-  if (!_buffer) return JsonArray::invalid();
-  JsonArray &array = _buffer->createArray();
+  JsonArray *array = new (_buffer) JsonArray(_buffer);
+  if (!array) return JsonArray::invalid();
+
   add(array);
-  return array;
+  return *array;
 }
 
 inline JsonObject &JsonArray::createNestedObject() {
-  if (!_buffer) return JsonObject::invalid();
-  JsonObject &object = _buffer->createObject();
+  JsonObject *object = new (_buffer) JsonObject(_buffer);
+  if (!object) return JsonObject::invalid();
+
   add(object);
-  return object;
-}
+  return *object;
 }
+}  // namespace ArduinoJson

src/ArduinoJson/JsonArraySubscript.hpp

@@ -73,13 +73,10 @@ class JsonArraySubscript : public JsonVariantBase<JsonArraySubscript> {
   FORCE_INLINE bool set(TValue* value) {
     return _array.set(_index, value);
   }
-  //
-  // bool set(TValue, uint8_t decimals);
-  // TValue = float, double
-  template <typename TValue>
-  DEPRECATED("Second argument is not supported anymore")
-  FORCE_INLINE bool set(const TValue& value, uint8_t) {
-    return _array.set(_index, value);
+
+  template <typename Visitor>
+  void visit(Visitor& visitor) const {
+    return _array.get<JsonVariant>(_index).visit(visitor);
   }
 
  private:
@@ -98,14 +95,7 @@ inline const JsonArraySubscript JsonVariantSubscripts<TImpl>::operator[](
     size_t index) const {
   return impl()->template as<JsonArray>()[index];
 }
-
-#if ARDUINOJSON_ENABLE_STD_STREAM
-inline std::ostream& operator<<(std::ostream& os,
-                                const JsonArraySubscript& source) {
-  return source.printTo(os);
-}
-#endif
-}
+}  // namespace Internals
 
 inline Internals::JsonArraySubscript JsonArray::operator[](size_t index) {
   return Internals::JsonArraySubscript(*this, index);
@@ -115,7 +105,7 @@ inline const Internals::JsonArraySubscript JsonArray::operator[](
     size_t index) const {
   return Internals::JsonArraySubscript(*const_cast<JsonArray*>(this), index);
 }
-}
+}  // namespace ArduinoJson
 
 #ifdef _MSC_VER
 #pragma warning(pop)

src/ArduinoJson/JsonBuffer.hpp

@@ -1,78 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include <stddef.h>  // for size_t
-#include <stdint.h>  // for uint8_t
-#include <string.h>
-
-#include "Data/NonCopyable.hpp"
-#include "JsonVariant.hpp"
-#include "TypeTraits/EnableIf.hpp"
-#include "TypeTraits/IsArray.hpp"
-
-namespace ArduinoJson {
-class JsonArray;
-class JsonObject;
-
-// Entry point for using the library.
-//
-// Handle the memory management (done in derived classes) and calls the parser.
-// This abstract class is implemented by StaticJsonBuffer which implements a
-// fixed memory allocation.
-class JsonBuffer : Internals::NonCopyable {
- public:
-  // Allocates an empty JsonArray.
-  //
-  // Returns a reference to the new JsonArray or JsonArray::invalid() if the
-  // allocation fails.
-  JsonArray &createArray();
-
-  // Allocates an empty JsonObject.
-  //
-  // Returns a reference to the new JsonObject or JsonObject::invalid() if the
-  // allocation fails.
-  JsonObject &createObject();
-
-  // Duplicates a string
-  //
-  // const char* strdup(TValue);
-  // TValue = const std::string&, const String&,
-  template <typename TString>
-  DEPRECATED("char* are duplicated, you don't need strdup() anymore")
-  typename Internals::EnableIf<!Internals::IsArray<TString>::value,
-                               const char *>::type strdup(const TString &src) {
-    return Internals::StringTraits<TString>::duplicate(src, this);
-  }
-  //
-  // const char* strdup(TValue);
-  // TValue = char*, const char*, const FlashStringHelper*
-  template <typename TString>
-  DEPRECATED("char* are duplicated, you don't need strdup() anymore")
-  const char *strdup(TString *src) {
-    return Internals::StringTraits<TString *>::duplicate(src, this);
-  }
-
-  // Allocates n bytes in the JsonBuffer.
-  // Return a pointer to the allocated memory or NULL if allocation fails.
-  virtual void *alloc(size_t size) = 0;
-
- protected:
-  // CAUTION: NO VIRTUAL DESTRUCTOR!
-  // If we add a virtual constructor the Arduino compiler will add malloc()
-  // and free() to the binary, adding 706 useless bytes.
-  ~JsonBuffer() {}
-
-  // Preserve aligment if necessary
-  static FORCE_INLINE size_t round_size_up(size_t bytes) {
-#if ARDUINOJSON_ENABLE_ALIGNMENT
-    const size_t x = sizeof(void *) - 1;
-    return (bytes + x) & ~x;
-#else
-    return bytes;
-#endif
-  }
-};
-}

src/ArduinoJson/JsonBufferBase.hpp

@@ -1,127 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "Deserialization/JsonParser.hpp"
-
-namespace ArduinoJson {
-namespace Internals {
-template <typename TDerived>
-class JsonBufferBase : public JsonBuffer {
- public:
-  // Allocates and populate a JsonArray from a JSON string.
-  //
-  // The First argument is a pointer to the JSON string, the memory must be
-  // writable
-  // because the parser will insert null-terminators and replace escaped chars.
-  //
-  // The second argument set the nesting limit
-  //
-  // Returns a reference to the new JsonObject or JsonObject::invalid() if the
-  // allocation fails.
-  // With this overload, the JsonBuffer will make a copy of the string
-  //
-  // JsonArray& parseArray(TString);
-  // TString = const std::string&, const String&
-  template <typename TString>
-  typename Internals::EnableIf<!Internals::IsArray<TString>::value,
-                               JsonArray &>::type
-  parseArray(const TString &json,
-             uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseArray();
-  }
-  //
-  // JsonArray& parseArray(TString);
-  // TString = const char*, const char[N], const FlashStringHelper*
-  template <typename TString>
-  JsonArray &parseArray(
-      TString *json, uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseArray();
-  }
-  //
-  // JsonArray& parseArray(TString);
-  // TString = std::istream&, Stream&
-  template <typename TString>
-  JsonArray &parseArray(
-      TString &json, uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseArray();
-  }
-
-  // Allocates and populate a JsonObject from a JSON string.
-  //
-  // The First argument is a pointer to the JSON string, the memory must be
-  // writable
-  // because the parser will insert null-terminators and replace escaped chars.
-  //
-  // The second argument set the nesting limit
-  //
-  // Returns a reference to the new JsonObject or JsonObject::invalid() if the
-  // allocation fails.
-  //
-  // JsonObject& parseObject(TString);
-  // TString = const std::string&, const String&
-  template <typename TString>
-  typename Internals::EnableIf<!Internals::IsArray<TString>::value,
-                               JsonObject &>::type
-  parseObject(const TString &json,
-              uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseObject();
-  }
-  //
-  // JsonObject& parseObject(TString);
-  // TString = const char*, const char[N], const FlashStringHelper*
-  template <typename TString>
-  JsonObject &parseObject(
-      TString *json, uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseObject();
-  }
-  //
-  // JsonObject& parseObject(TString);
-  // TString = std::istream&, Stream&
-  template <typename TString>
-  JsonObject &parseObject(
-      TString &json, uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseObject();
-  }
-
-  // Generalized version of parseArray() and parseObject(), also works for
-  // integral types.
-  //
-  // JsonVariant parse(TString);
-  // TString = const std::string&, const String&
-  template <typename TString>
-  typename Internals::EnableIf<!Internals::IsArray<TString>::value,
-                               JsonVariant>::type
-  parse(const TString &json,
-        uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseVariant();
-  }
-  //
-  // JsonVariant parse(TString);
-  // TString = const char*, const char[N], const FlashStringHelper*
-  template <typename TString>
-  JsonVariant parse(TString *json,
-                    uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseVariant();
-  }
-  //
-  // JsonVariant parse(TString);
-  // TString = std::istream&, Stream&
-  template <typename TString>
-  JsonVariant parse(TString &json,
-                    uint8_t nestingLimit = ARDUINOJSON_DEFAULT_NESTING_LIMIT) {
-    return Internals::makeParser(that(), json, nestingLimit).parseVariant();
-  }
-
- protected:
-  ~JsonBufferBase() {}
-
- private:
-  TDerived *that() {
-    return static_cast<TDerived *>(this);
-  }
-};
-}
-}

src/ArduinoJson/JsonBufferImpl.hpp

@@ -1,17 +0,0 @@
-// ArduinoJson - arduinojson.org
-// Copyright Benoit Blanchon 2014-2018
-// MIT License
-
-#pragma once
-
-#include "Deserialization/JsonParser.hpp"
-
-inline ArduinoJson::JsonArray &ArduinoJson::JsonBuffer::createArray() {
-  JsonArray *ptr = new (this) JsonArray(this);
-  return ptr ? *ptr : JsonArray::invalid();
-}
-
-inline ArduinoJson::JsonObject &ArduinoJson::JsonBuffer::createObject() {
-  JsonObject *ptr = new (this) JsonObject(this);
-  return ptr ? *ptr : JsonObject::invalid();
-}

src/ArduinoJson/JsonObject.hpp

@@ -4,17 +4,13 @@
 
 #pragma once
 
-#include "Data/JsonBufferAllocated.hpp"
 #include "Data/List.hpp"
 #include "Data/ReferenceType.hpp"
 #include "Data/ValueSaver.hpp"
 #include "JsonPair.hpp"
-#include "Serialization/JsonPrintable.hpp"
-#include "StringTraits/StringTraits.hpp"
-#include "TypeTraits/EnableIf.hpp"
-#include "TypeTraits/IsArray.hpp"
-#include "TypeTraits/IsFloatingPoint.hpp"
-#include "TypeTraits/IsSame.hpp"
+#include "Memory/JsonBufferAllocated.hpp"
+#include "Polyfills/type_traits.hpp"
+#include "Strings/StringTraits.hpp"
 
 // Returns the size (in bytes) of an object with n elements.
 // Can be very handy to determine the size of a StaticJsonBuffer.
@@ -31,23 +27,15 @@ template <typename>
 class JsonObjectSubscript;
 }
 
-// A dictionary of JsonVariant indexed by string (char*)
-//
-// The constructor is private, instances must be created via
-// JsonBuffer::createObject() or JsonBuffer::parseObject().
-// A JsonObject can be serialized to a JSON string via JsonObject::printTo().
-// It can also be deserialized from a JSON string via JsonBuffer::parseObject().
-class JsonObject : public Internals::JsonPrintable<JsonObject>,
-                   public Internals::ReferenceType,
+class JsonObject : public Internals::ReferenceType,
                    public Internals::NonCopyable,
                    public Internals::List<JsonPair>,
                    public Internals::JsonBufferAllocated {
  public:
   // Create an empty JsonArray attached to the specified JsonBuffer.
   // You should not use this constructor directly.
-  // Instead, use JsonBuffer::createObject() or JsonBuffer.parseObject().
-  explicit JsonObject(JsonBuffer* buffer) throw()
-      : Internals::List<JsonPair>(buffer) {}
+  explicit JsonObject(Internals::JsonBuffer* buf) throw()
+      : Internals::List<JsonPair>(buf) {}
 
   // Gets or sets the value associated with the specified key.
   //
@@ -121,29 +109,6 @@ class JsonObject : public Internals::JsonPrintable<JsonObject>,
   bool set(TString* key, TValue* value) {
     return set_impl<TString*, TValue*>(key, value);
   }
-  //
-  // bool set(TKey, TValue, uint8_t decimals);
-  // TKey = const std::string&, const String&
-  // TValue = float, double
-  template <typename TValue, typename TString>
-  DEPRECATED("Second argument is not supported anymore")
-  typename Internals::EnableIf<Internals::IsFloatingPoint<TValue>::value,
-                               bool>::type
-      set(const TString& key, TValue value, uint8_t) {
-    return set_impl<const TString&, const JsonVariant&>(key,
-                                                        JsonVariant(value));
-  }
-  //
-  // bool set(TKey, TValue, uint8_t decimals);
-  // TKey = char*, const char*, const FlashStringHelper*
-  // TValue = float, double
-  template <typename TValue, typename TString>
-  DEPRECATED("Second argument is not supported anymore")
-  typename Internals::EnableIf<Internals::IsFloatingPoint<TValue>::value,
-                               bool>::type
-      set(TString* key, TValue value, uint8_t) {
-    return set_impl<TString*, const JsonVariant&>(key, JsonVariant(value));
-  }
 
   // Gets the value associated with the specified key.
   //
@@ -261,6 +226,11 @@ class JsonObject : public Internals::JsonPrintable<JsonObject>,
     return instance;
   }
 
+  template <typename Visitor>
+  void visit(Visitor& visitor) const {
+    return visitor.acceptObject(*this);
+  }
+
  private:
   // Returns the list node that matches the specified key.
   template <typename TStringRef>

src/ArduinoJson/JsonObjectImpl.hpp

@@ -12,17 +12,17 @@ namespace ArduinoJson {
 
 template <typename TStringRef>
 inline JsonArray &JsonObject::createNestedArray_impl(TStringRef key) {
-  if (!_buffer) return JsonArray::invalid();
-  JsonArray &array = _buffer->createArray();
+  JsonArray *array = new (_buffer) JsonArray(_buffer);
+  if (!array) return JsonArray::invalid();
   set(key, array);
-  return array;
+  return *array;
 }
 
 template <typename TStringRef>
 inline JsonObject &JsonObject::createNestedObject_impl(TStringRef key) {
-  if (!_buffer) return JsonObject::invalid();
-  JsonObject &object = _buffer->createObject();
+  JsonObject *object = new (_buffer) JsonObject(_buffer);
+  if (!object) return JsonObject::invalid();
   set(key, object);
-  return object;
-}
+  return *object;
 }
+}  // namespace ArduinoJson

src/ArduinoJson/JsonObjectSubscript.hpp

@@ -6,7 +6,7 @@
 
 #include "Configuration.hpp"
 #include "JsonVariantBase.hpp"
-#include "TypeTraits/EnableIf.hpp"
+#include "Polyfills/type_traits.hpp"
 
 #ifdef _MSC_VER
 #pragma warning(push)
@@ -36,7 +36,7 @@ class JsonObjectSubscript
   // TValue = bool, char, long, int, short, float, double,
   //          std::string, String, JsonArray, JsonObject
   template <typename TValue>
-  FORCE_INLINE typename EnableIf<!IsArray<TValue>::value, this_type&>::type
+  FORCE_INLINE typename enable_if<!is_array<TValue>::value, this_type&>::type
   operator=(const TValue& src) {
     _object.set(_key, src);
     return *this;
@@ -70,7 +70,7 @@ class JsonObjectSubscript
   // TValue = bool, char, long, int, short, float, double, RawJson, JsonVariant,
   //          std::string, String, JsonArray, JsonObject
   template <typename TValue>
-  FORCE_INLINE typename EnableIf<!IsArray<TValue>::value, bool>::type set(
+  FORCE_INLINE typename enable_if<!is_array<TValue>::value, bool>::type set(
       const TValue& value) {
     return _object.set(_key, value);
   }
@@ -81,29 +81,18 @@ class JsonObjectSubscript
   FORCE_INLINE bool set(const TValue* value) {
     return _object.set(_key, value);
   }
-  //
-  // bool set(TValue, uint8_t decimals);
-  // TValue = float, double
-  template <typename TValue>
-  DEPRECATED("Second argument is not supported anymore")
-  FORCE_INLINE bool set(const TValue& value, uint8_t) {
-    return _object.set(_key, value);
+
+  template <typename Visitor>
+  void visit(Visitor& visitor) const {
+    return _object.get<JsonVariant>(_key).visit(visitor);
   }
 
  private:
   JsonObject& _object;
   TStringRef _key;
 };
-
-#if ARDUINOJSON_ENABLE_STD_STREAM
-template <typename TStringRef>
-inline std::ostream& operator<<(std::ostream& os,
-                                const JsonObjectSubscript<TStringRef>& source) {
-  return source.printTo(os);
-}
-#endif
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson
 
 #ifdef _MSC_VER
 #pragma warning(pop)

src/ArduinoJson/JsonVariant.hpp

@@ -11,17 +11,8 @@
 #include "Data/JsonVariantDefault.hpp"
 #include "Data/JsonVariantType.hpp"
 #include "JsonVariantBase.hpp"
+#include "Polyfills/type_traits.hpp"
 #include "RawJson.hpp"
-#include "Serialization/JsonPrintable.hpp"
-#include "TypeTraits/EnableIf.hpp"
-#include "TypeTraits/IsChar.hpp"
-#include "TypeTraits/IsFloatingPoint.hpp"
-#include "TypeTraits/IsIntegral.hpp"
-#include "TypeTraits/IsSame.hpp"
-#include "TypeTraits/IsSignedIntegral.hpp"
-#include "TypeTraits/IsUnsignedIntegral.hpp"
-#include "TypeTraits/RemoveConst.hpp"
-#include "TypeTraits/RemoveReference.hpp"
 
 namespace ArduinoJson {
 
@@ -37,9 +28,6 @@ class JsonObject;
 // - a string (const char*)
 // - a reference to a JsonArray or JsonObject
 class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
-  template <typename Print>
-  friend class Internals::JsonSerializer;
-
  public:
   // Creates an uninitialized JsonVariant
   JsonVariant() : _type(Internals::JSON_UNDEFINED) {}
@@ -56,17 +44,9 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // JsonVariant(double value);
   // JsonVariant(float value);
   template <typename T>
-  JsonVariant(T value, typename Internals::EnableIf<
-                           Internals::IsFloatingPoint<T>::value>::type * = 0) {
-    using namespace Internals;
-    _type = JSON_FLOAT;
-    _content.asFloat = static_cast<JsonFloat>(value);
-  }
-  template <typename T>
-  DEPRECATED("Second argument is not supported anymore")
-  JsonVariant(T value, uint8_t,
-              typename Internals::EnableIf<
-                  Internals::IsFloatingPoint<T>::value>::type * = 0) {
+  JsonVariant(T value,
+              typename Internals::enable_if<
+                  Internals::is_floating_point<T>::value>::type * = 0) {
     using namespace Internals;
     _type = JSON_FLOAT;
     _content.asFloat = static_cast<JsonFloat>(value);
@@ -81,8 +61,8 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   template <typename T>
   JsonVariant(
       T value,
-      typename Internals::EnableIf<Internals::IsSignedIntegral<T>::value ||
-                                   Internals::IsSame<T, char>::value>::type * =
+      typename Internals::enable_if<Internals::is_integral<T>::value &&
+                                    Internals::is_signed<T>::value>::type * =
           0) {
     using namespace Internals;
     if (value >= 0) {
@@ -90,16 +70,18 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
       _content.asInteger = static_cast<JsonUInt>(value);
     } else {
       _type = JSON_NEGATIVE_INTEGER;
-      _content.asInteger = static_cast<JsonUInt>(-value);
+      _content.asInteger = ~static_cast<JsonUInt>(value) + 1;
     }
   }
   // JsonVariant(unsigned short)
   // JsonVariant(unsigned int)
   // JsonVariant(unsigned long)
   template <typename T>
-  JsonVariant(T value,
-              typename Internals::EnableIf<
-                  Internals::IsUnsignedIntegral<T>::value>::type * = 0) {
+  JsonVariant(
+      T value,
+      typename Internals::enable_if<Internals::is_integral<T>::value &&
+                                    Internals::is_unsigned<T>::value>::type * =
+          0) {
     using namespace Internals;
     _type = JSON_POSITIVE_INTEGER;
     _content.asInteger = static_cast<JsonUInt>(value);
@@ -110,10 +92,8 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // JsonVariant(const signed char*);
   // JsonVariant(const unsigned char*);
   template <typename TChar>
-  JsonVariant(
-      const TChar *value,
-      typename Internals::EnableIf<Internals::IsChar<TChar>::value>::type * =
-          0) {
+  JsonVariant(const TChar *value,
+              typename Internals::enable_if<sizeof(TChar) == 1>::type * = 0) {
     _type = Internals::JSON_STRING;
     _content.asString = reinterpret_cast<const char *>(value);
   }
@@ -134,6 +114,16 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // if the variant is converted back to a JsonObject&
   JsonVariant(const JsonObject &object);
 
+  JsonVariant(JsonArray *array) {
+    _content.asArray = array;
+    _type = Internals::JSON_ARRAY;
+  }
+
+  JsonVariant(JsonObject *object) {
+    _content.asObject = object;
+    _type = Internals::JSON_OBJECT;
+  }
+
   // Get the variant as the specified type.
   //
   // char as<char>() const;
@@ -146,13 +136,14 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // unsigned int as<unsigned int>() const;
   // unsigned long as<unsigned long>() const;
   template <typename T>
-  const typename Internals::EnableIf<Internals::IsIntegral<T>::value, T>::type
+  const typename Internals::enable_if<Internals::is_integral<T>::value, T>::type
   as() const {
     return variantAsInteger<T>();
   }
   // bool as<bool>() const
   template <typename T>
-  const typename Internals::EnableIf<Internals::IsSame<T, bool>::value, T>::type
+  const typename Internals::enable_if<Internals::is_same<T, bool>::value,
+                                      T>::type
   as() const {
     return variantAsInteger<int>() != 0;
   }
@@ -160,8 +151,8 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // double as<double>() const;
   // float as<float>() const;
   template <typename T>
-  const typename Internals::EnableIf<Internals::IsFloatingPoint<T>::value,
-                                     T>::type
+  const typename Internals::enable_if<Internals::is_floating_point<T>::value,
+                                      T>::type
   as() const {
     return variantAsFloat<T>();
   }
@@ -169,9 +160,9 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // const char* as<const char*>() const;
   // const char* as<char*>() const;
   template <typename T>
-  typename Internals::EnableIf<Internals::IsSame<T, const char *>::value ||
-                                   Internals::IsSame<T, char *>::value,
-                               const char *>::type
+  typename Internals::enable_if<Internals::is_same<T, const char *>::value ||
+                                    Internals::is_same<T, char *>::value,
+                                const char *>::type
   as() const {
     return variantAsString();
   }
@@ -179,21 +170,21 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // std::string as<std::string>() const;
   // String as<String>() const;
   template <typename T>
-  typename Internals::EnableIf<Internals::StringTraits<T>::has_append, T>::type
+  typename Internals::enable_if<Internals::StringTraits<T>::has_append, T>::type
   as() const {
     const char *cstr = variantAsString();
     if (cstr) return T(cstr);
     T s;
-    printTo(s);
+    serializeJson(*this, s);
     return s;
   }
   //
   // JsonArray& as<JsonArray> const;
   // JsonArray& as<JsonArray&> const;
   template <typename T>
-  typename Internals::EnableIf<
-      Internals::IsSame<typename Internals::RemoveReference<T>::type,
-                        JsonArray>::value,
+  typename Internals::enable_if<
+      Internals::is_same<typename Internals::remove_reference<T>::type,
+                         JsonArray>::value,
       JsonArray &>::type
   as() const {
     return variantAsArray();
@@ -201,9 +192,9 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   //
   // const JsonArray& as<const JsonArray&> const;
   template <typename T>
-  typename Internals::EnableIf<
-      Internals::IsSame<typename Internals::RemoveReference<T>::type,
-                        const JsonArray>::value,
+  typename Internals::enable_if<
+      Internals::is_same<typename Internals::remove_reference<T>::type,
+                         const JsonArray>::value,
       const JsonArray &>::type
   as() const {
     return variantAsArray();
@@ -212,9 +203,9 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // JsonObject& as<JsonObject> const;
   // JsonObject& as<JsonObject&> const;
   template <typename T>
-  typename Internals::EnableIf<
-      Internals::IsSame<typename Internals::RemoveReference<T>::type,
-                        JsonObject>::value,
+  typename Internals::enable_if<
+      Internals::is_same<typename Internals::remove_reference<T>::type,
+                         JsonObject>::value,
       JsonObject &>::type
   as() const {
     return variantAsObject();
@@ -223,9 +214,9 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // JsonObject& as<const JsonObject> const;
   // JsonObject& as<const JsonObject&> const;
   template <typename T>
-  typename Internals::EnableIf<
-      Internals::IsSame<typename Internals::RemoveReference<T>::type,
-                        const JsonObject>::value,
+  typename Internals::enable_if<
+      Internals::is_same<typename Internals::remove_reference<T>::type,
+                         const JsonObject>::value,
       const JsonObject &>::type
   as() const {
     return variantAsObject();
@@ -233,8 +224,8 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   //
   // JsonVariant as<JsonVariant> const;
   template <typename T>
-  typename Internals::EnableIf<Internals::IsSame<T, JsonVariant>::value,
-                               T>::type
+  typename Internals::enable_if<Internals::is_same<T, JsonVariant>::value,
+                                T>::type
   as() const {
     return *this;
   }
@@ -252,22 +243,23 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // bool is<unsigned int>() const;
   // bool is<unsigned long>() const;
   template <typename T>
-  typename Internals::EnableIf<Internals::IsIntegral<T>::value, bool>::type is()
-      const {
+  typename Internals::enable_if<Internals::is_integral<T>::value, bool>::type
+  is() const {
     return variantIsInteger();
   }
   //
   // bool is<double>() const;
   // bool is<float>() const;
   template <typename T>
-  typename Internals::EnableIf<Internals::IsFloatingPoint<T>::value, bool>::type
+  typename Internals::enable_if<Internals::is_floating_point<T>::value,
+                                bool>::type
   is() const {
     return variantIsFloat();
   }
   //
   // bool is<bool>() const
   template <typename T>
-  typename Internals::EnableIf<Internals::IsSame<T, bool>::value, bool>::type
+  typename Internals::enable_if<Internals::is_same<T, bool>::value, bool>::type
   is() const {
     return variantIsBoolean();
   }
@@ -275,9 +267,9 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // bool is<const char*>() const;
   // bool is<char*>() const;
   template <typename T>
-  typename Internals::EnableIf<Internals::IsSame<T, const char *>::value ||
-                                   Internals::IsSame<T, char *>::value,
-                               bool>::type
+  typename Internals::enable_if<Internals::is_same<T, const char *>::value ||
+                                    Internals::is_same<T, char *>::value,
+                                bool>::type
   is() const {
     return variantIsString();
   }
@@ -286,10 +278,11 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // bool is<JsonArray&> const;
   // bool is<const JsonArray&> const;
   template <typename T>
-  typename Internals::EnableIf<
-      Internals::IsSame<typename Internals::RemoveConst<
-                            typename Internals::RemoveReference<T>::type>::type,
-                        JsonArray>::value,
+  typename Internals::enable_if<
+      Internals::is_same<
+          typename Internals::remove_const<
+              typename Internals::remove_reference<T>::type>::type,
+          JsonArray>::value,
       bool>::type
   is() const {
     return variantIsArray();
@@ -299,10 +292,11 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // bool is<JsonObject&> const;
   // bool is<const JsonObject&> const;
   template <typename T>
-  typename Internals::EnableIf<
-      Internals::IsSame<typename Internals::RemoveConst<
-                            typename Internals::RemoveReference<T>::type>::type,
-                        JsonObject>::value,
+  typename Internals::enable_if<
+      Internals::is_same<
+          typename Internals::remove_const<
+              typename Internals::remove_reference<T>::type>::type,
+          JsonObject>::value,
       bool>::type
   is() const {
     return variantIsObject();
@@ -313,6 +307,39 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
     return _type != Internals::JSON_UNDEFINED;
   }
 
+  template <typename Visitor>
+  void visit(Visitor &visitor) const {
+    using namespace Internals;
+    switch (_type) {
+      case JSON_FLOAT:
+        return visitor.acceptFloat(_content.asFloat);
+
+      case JSON_ARRAY:
+        return visitor.acceptArray(*_content.asArray);
+
+      case JSON_OBJECT:
+        return visitor.acceptObject(*_content.asObject);
+
+      case JSON_STRING:
+        return visitor.acceptString(_content.asString);
+
+      case JSON_UNPARSED:
+        return visitor.acceptRawJson(_content.asString);
+
+      case JSON_NEGATIVE_INTEGER:
+        return visitor.acceptNegativeInteger(_content.asInteger);
+
+      case JSON_POSITIVE_INTEGER:
+        return visitor.acceptPositiveInteger(_content.asInteger);
+
+      case JSON_BOOLEAN:
+        return visitor.acceptBoolean(_content.asInteger != 0);
+
+      default:  // JSON_UNDEFINED
+        return visitor.acceptUndefined();
+    }
+  }
+
  private:
   JsonArray &variantAsArray() const;
   JsonObject &variantAsObject() const;
@@ -342,14 +369,4 @@ class JsonVariant : public Internals::JsonVariantBase<JsonVariant> {
   // The various alternatives for the value of the variant.
   Internals::JsonVariantContent _content;
 };
-
-DEPRECATED("Decimal places are ignored, use the float value instead")
-inline JsonVariant float_with_n_digits(float value, uint8_t) {
-  return JsonVariant(value);
-}
-
-DEPRECATED("Decimal places are ignored, use the double value instead")
-inline JsonVariant double_with_n_digits(double value, uint8_t) {
-  return JsonVariant(value);
-}
-}
+}  // namespace ArduinoJson

src/ArduinoJson/JsonVariantBase.hpp

@@ -8,17 +8,15 @@
 #include "JsonVariantComparisons.hpp"
 #include "JsonVariantOr.hpp"
 #include "JsonVariantSubscripts.hpp"
-#include "Serialization/JsonPrintable.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
 
 template <typename TImpl>
-class JsonVariantBase : public JsonPrintable<TImpl>,
-                        public JsonVariantCasts<TImpl>,
+class JsonVariantBase : public JsonVariantCasts<TImpl>,
                         public JsonVariantComparisons<TImpl>,
                         public JsonVariantOr<TImpl>,
                         public JsonVariantSubscripts<TImpl>,
                         public JsonVariantTag {};
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/JsonVariantCasts.hpp

@@ -13,23 +13,6 @@ namespace Internals {
 template <typename TImpl>
 class JsonVariantCasts {
  public:
-#if ARDUINOJSON_ENABLE_DEPRECATED
-  DEPRECATED("use as<JsonArray>() instead")
-  FORCE_INLINE JsonArray &asArray() const {
-    return impl()->template as<JsonArray>();
-  }
-
-  DEPRECATED("use as<JsonObject>() instead")
-  FORCE_INLINE JsonObject &asObject() const {
-    return impl()->template as<JsonObject>();
-  }
-
-  DEPRECATED("use as<char*>() instead")
-  FORCE_INLINE const char *asString() const {
-    return impl()->template as<const char *>();
-  }
-#endif
-
   // Gets the variant as an array.
   // Returns a reference to the JsonArray or JsonArray::invalid() if the
   // variant
@@ -55,5 +38,5 @@ class JsonVariantCasts {
     return static_cast<const TImpl *>(this);
   }
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/JsonVariantComparisons.hpp

@@ -4,9 +4,9 @@
 
 #pragma once
 
-#include "StringTraits/StringTraits.hpp"
-#include "TypeTraits/EnableIf.hpp"
-#include "TypeTraits/IsVariant.hpp"
+#include "Data/IsVariant.hpp"
+#include "Polyfills/type_traits.hpp"
+#include "Strings/StringTraits.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -21,7 +21,7 @@ class JsonVariantComparisons {
   }
 
   template <typename TComparand>
-  friend typename EnableIf<!IsVariant<TComparand>::value, bool>::type
+  friend typename enable_if<!IsVariant<TComparand>::value, bool>::type
   operator==(TComparand comparand, const JsonVariantComparisons &variant) {
     return variant.equals(comparand);
   }
@@ -33,7 +33,7 @@ class JsonVariantComparisons {
   }
 
   template <typename TComparand>
-  friend typename EnableIf<!IsVariant<TComparand>::value, bool>::type
+  friend typename enable_if<!IsVariant<TComparand>::value, bool>::type
   operator!=(TComparand comparand, const JsonVariantComparisons &variant) {
     return !variant.equals(comparand);
   }
@@ -101,16 +101,16 @@ class JsonVariantComparisons {
   }
 
   template <typename TString>
-  typename EnableIf<StringTraits<TString>::has_equals, bool>::type equals(
+  typename enable_if<StringTraits<TString>::has_equals, bool>::type equals(
       const TString &comparand) const {
     const char *value = as<const char *>();
     return StringTraits<TString>::equals(comparand, value);
   }
 
   template <typename TComparand>
-  typename EnableIf<!IsVariant<TComparand>::value &&
-                        !StringTraits<TComparand>::has_equals,
-                    bool>::type
+  typename enable_if<!IsVariant<TComparand>::value &&
+                         !StringTraits<TComparand>::has_equals,
+                     bool>::type
   equals(const TComparand &comparand) const {
     return as<TComparand>() == comparand;
   }

src/ArduinoJson/JsonVariantImpl.hpp

@@ -8,10 +8,10 @@
 #include "JsonArray.hpp"
 #include "JsonObject.hpp"
 #include "JsonVariant.hpp"
-#include "Polyfills/isFloat.hpp"
-#include "Polyfills/isInteger.hpp"
-#include "Polyfills/parseFloat.hpp"
-#include "Polyfills/parseInteger.hpp"
+#include "Numbers/isFloat.hpp"
+#include "Numbers/isInteger.hpp"
+#include "Numbers/parseFloat.hpp"
+#include "Numbers/parseInteger.hpp"
 
 #include <string.h>  // for strcmp
 
@@ -117,10 +117,4 @@ inline bool JsonVariant::variantIsFloat() const {
          (_type == JSON_UNPARSED && isFloat(_content.asString));
 }
 
-#if ARDUINOJSON_ENABLE_STD_STREAM
-inline std::ostream &operator<<(std::ostream &os, const JsonVariant &source) {
-  return source.printTo(os);
-}
-#endif
-
 }  // namespace ArduinoJson

src/ArduinoJson/JsonVariantOr.hpp

@@ -6,8 +6,7 @@
 
 #include "Data/JsonVariantAs.hpp"
 #include "Polyfills/attributes.hpp"
-#include "TypeTraits/EnableIf.hpp"
-#include "TypeTraits/IsIntegral.hpp"
+#include "Polyfills/type_traits.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -17,7 +16,7 @@ class JsonVariantOr {
  public:
   // Returns the default value if the JsonVariant is undefined of incompatible
   template <typename T>
-  typename EnableIf<!IsIntegral<T>::value, T>::type operator|(
+  typename enable_if<!is_integral<T>::value, T>::type operator|(
       const T &defaultValue) const {
     if (impl()->template is<T>())
       return impl()->template as<T>();
@@ -35,7 +34,7 @@ class JsonVariantOr {
   // Returns the default value if the JsonVariant is undefined of incompatible
   // Special case for integers: we also accept double
   template <typename Integer>
-  typename EnableIf<IsIntegral<Integer>::value, Integer>::type operator|(
+  typename enable_if<is_integral<Integer>::value, Integer>::type operator|(
       const Integer &defaultValue) const {
     if (impl()->template is<double>())
       return impl()->template as<Integer>();

src/ArduinoJson/JsonVariantSubscripts.hpp

@@ -6,8 +6,8 @@
 
 #include "Data/JsonVariantAs.hpp"
 #include "Polyfills/attributes.hpp"
-#include "StringTraits/StringTraits.hpp"
-#include "TypeTraits/EnableIf.hpp"
+#include "Polyfills/type_traits.hpp"
+#include "Strings/StringTraits.hpp"
 
 namespace ArduinoJson {
 namespace Internals {
@@ -43,8 +43,8 @@ class JsonVariantSubscripts {
   // TKey = const std::string&, const String&
   template <typename TString>
   FORCE_INLINE
-      typename EnableIf<StringTraits<TString>::has_equals,
-                        const JsonObjectSubscript<const TString &> >::type
+      typename enable_if<StringTraits<TString>::has_equals,
+                         const JsonObjectSubscript<const TString &> >::type
       operator[](const TString &key) const {
     return impl()->template as<JsonObject>()[key];
   }
@@ -52,8 +52,8 @@ class JsonVariantSubscripts {
   // const JsonObjectSubscript operator[](TKey) const;
   // TKey = const std::string&, const String&
   template <typename TString>
-  FORCE_INLINE typename EnableIf<StringTraits<TString>::has_equals,
-                                 JsonObjectSubscript<const TString &> >::type
+  FORCE_INLINE typename enable_if<StringTraits<TString>::has_equals,
+                                  JsonObjectSubscript<const TString &> >::type
   operator[](const TString &key) {
     return impl()->template as<JsonObject>()[key];
   }
@@ -61,8 +61,8 @@ class JsonVariantSubscripts {
   // JsonObjectSubscript operator[](TKey);
   // TKey = const char*, const char[N], const FlashStringHelper*
   template <typename TString>
-  FORCE_INLINE typename EnableIf<StringTraits<const TString *>::has_equals,
-                                 JsonObjectSubscript<const TString *> >::type
+  FORCE_INLINE typename enable_if<StringTraits<const TString *>::has_equals,
+                                  JsonObjectSubscript<const TString *> >::type
   operator[](const TString *key) {
     return impl()->template as<JsonObject>()[key];
   }
@@ -71,8 +71,8 @@ class JsonVariantSubscripts {
   // TKey = const char*, const char[N], const FlashStringHelper*
   template <typename TString>
   FORCE_INLINE
-      typename EnableIf<StringTraits<TString *>::has_equals,
-                        const JsonObjectSubscript<const TString *> >::type
+      typename enable_if<StringTraits<TString *>::has_equals,
+                         const JsonObjectSubscript<const TString *> >::type
       operator[](const TString *key) const {
     return impl()->template as<JsonObject>()[key];
   }
@@ -82,5 +82,5 @@ class JsonVariantSubscripts {
     return static_cast<const TImpl *>(this);
   }
 };
-}
-}
+}  // namespace Internals
+}  // namespace ArduinoJson

src/ArduinoJson/Memory/DynamicJsonBuffer.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include "JsonBufferBase.hpp"
+#include "JsonBuffer.hpp"
 
 #include <stdlib.h>
 
@@ -31,8 +31,7 @@ class DefaultAllocator {
 };
 
 template <typename TAllocator>
-class DynamicJsonBufferBase
-    : public JsonBufferBase<DynamicJsonBufferBase<TAllocator> > {
+class DynamicJsonBufferBase : public JsonBuffer {
   struct Block;
   struct EmptyBlock {
     Block* next;
@@ -152,7 +151,13 @@ class DynamicJsonBufferBase
   Block* _head;
   size_t _nextBlockCapacity;
 };
-}
+
+// Implements a JsonBuffer with dynamic memory allocation.
+// You are strongly encouraged to consider using StaticJsonBuffer which is much
+// more suitable for embedded systems.
+typedef Internals::DynamicJsonBufferBase<Internals::DefaultAllocator>
+    DynamicJsonBuffer;
+}  // namespace Internals
 
 #if defined(__clang__)
 #pragma clang diagnostic pop
@@ -161,10 +166,4 @@ class DynamicJsonBufferBase
 #pragma GCC diagnostic pop
 #endif
 #endif
-
-// Implements a JsonBuffer with dynamic memory allocation.
-// You are strongly encouraged to consider using StaticJsonBuffer which is much
-// more suitable for embedded systems.
-typedef Internals::DynamicJsonBufferBase<Internals::DefaultAllocator>
-    DynamicJsonBuffer;
-}
+}  // namespace ArduinoJson