mirror of
https://github.com/eledio-devices/thirdparty-ArduinoJson.git
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1149 lines
39 KiB
Markdown
1149 lines
39 KiB
Markdown
ArduinoJson: change log
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=======================
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v6.18.4 (2021-09-06)
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-------
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* Fixed error `'dummy' may be used uninitialized` on GCC 11
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* Fixed error `expected unqualified-id before 'const'` on GCC 11 (issue #1622)
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* Filter: exact match takes precedence over wildcard (issue #1628)
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* Fixed deserialization of `\u0000` (issue #1646)
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v6.18.3 (2021-07-27)
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-------
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* Changed return type of `convertToJson()` and `Converter<T>::toJson()` to `void`
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* Added `as<std::string_view>()` and `is<std::string_view>()`
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v6.18.2 (2021-07-19)
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-------
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* Removed a symlink because the Arduino Library Specification forbids it
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v6.18.1 (2021-07-03)
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-------
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* Fixed support for `volatile float` and `volatile double` (issue #1557)
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* Fixed error `[Pe070]: incomplete type is not allowed` on IAR (issue #1560)
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* Fixed `serializeJson(doc, String)` when allocation fails (issue #1572)
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* Fixed clang-tidy warnings (issue #1574, PR #1577 by @armandas)
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* Added fake class `InvalidConversion<T1,T2>` to easily identify invalid conversions (issue #1585)
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* Added support for `std::string_view` (issue #1578, PR #1554 by @0xFEEDC0DE64)
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* Fixed warning `definition of implicit copy constructor for 'MsgPackDeserializer' is deprecated because it has a user-declared copy assignment operator`
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* Added `JsonArray::clear()` (issue #1597)
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* Fixed `JsonVariant::as<unsigned>()` (issue #1601)
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* Added support for ESP-IDF component build (PR #1562 by @qt1, PR #1599 by @andreaskuster)
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v6.18.0 (2021-05-05)
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-------
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* Added support for custom converters (issue #687)
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* Added support for `Printable` (issue #1444)
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* Removed support for `char` values, see below (issue #1498)
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* `deserializeJson()` leaves `\uXXXX` unchanged instead of returning `NotSupported`
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* `deserializeMsgPack()` inserts `null` instead of returning `NotSupported`
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* Removed `DeserializationError::NotSupported`
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* Added `JsonVariant::is<JsonArrayConst/JsonObjectConst>()` (issue #1412)
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* Added `JsonVariant::is<JsonVariant/JsonVariantConst>()` (issue #1412)
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* Changed `JsonVariantConst::is<JsonArray/JsonObject>()` to return `false` (issue #1412)
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* Simplified `JsonVariant::as<T>()` to always return `T` (see below)
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* Updated folders list in `.mbedignore` (PR #1515 by @AGlass0fMilk)
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* Fixed member-call-on-null-pointer in `getMember()` when array is empty
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* `serializeMsgPack(doc, buffer, size)` doesn't add null-terminator anymore (issue #1545)
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* `serializeJson(doc, buffer, size)` adds null-terminator only if there is enough room
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* PlatformIO: set `build.libArchive` to `false` (PR #1550 by @askreet)
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> ### BREAKING CHANGES
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>
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> #### Support for `char` removed
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>
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> We cannot cast a `JsonVariant` to a `char` anymore, so the following will break:
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> ```c++
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> char age = doc["age"]; // error: no matching function for call to 'variantAs(VariantData*&)'
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> ```
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> Instead, you must use another integral type, such as `int8_t`:
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> ```c++
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> int8_t age = doc["age"]; // OK
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> ```
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>
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> Similarly, we cannot assign from a `char` anymore, so the following will break:
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> ```c++
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> char age;
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> doc["age"] = age; // error: no matching function for call to 'VariantRef::set(const char&)'
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> ```
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> Instead, you must use another integral type, such as `int8_t`:
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> ```c++
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> int8_t age;
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> doc["age"] = age; // OK
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> ```
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> A deprecation warning with the message "Support for `char` is deprecated, use `int8_t` or `uint8_t` instead" was added to allow a smooth transition.
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>
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> #### `as<T>()` always returns `T`
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>
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> Previously, `JsonVariant::as<T>()` could return a type different from `T`.
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> The most common example is `as<char*>()` that returned a `const char*`.
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> While this feature simplified a few use cases, it was confusing and complicated the
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> implementation of custom converters.
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>
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> Starting from this version, `as<T>` doesn't try to auto-correct the return type and always return `T`,
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> which means that you cannot write this anymore:
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>
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> ```c++
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> Serial.println(doc["sensor"].as<char*>()); // error: invalid conversion from 'const char*' to 'char*' [-fpermissive]
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> ```
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>
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> Instead, you must write:
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>
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> ```c++
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> Serial.println(doc["sensor"].as<const char*>()); // OK
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> ```
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>
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> A deprecation warning with the message "Replace `as<char*>()` with `as<const char*>()`" was added to allow a smooth transition.
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>
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> #### `DeserializationError::NotSupported` removed
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>
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> On a different topic, `DeserializationError::NotSupported` has been removed.
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> Instead of returning this error:
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>
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> * `deserializeJson()` leaves `\uXXXX` unchanged (only when `ARDUINOJSON_DECODE_UNICODE` is `0`)
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> * `deserializeMsgPack()` replaces unsupported values with `null`s
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>
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> #### Const-aware `is<T>()`
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>
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> Lastly, a very minor change concerns `JsonVariantConst::is<T>()`.
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> It used to return `true` for `JsonArray` and `JsonOject`, but now it returns `false`.
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> Instead, you must use `JsonArrayConst` and `JsonObjectConst`.
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v6.17.3 (2021-02-15)
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-------
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* Made `JsonDocument`'s destructor protected (issue #1480)
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* Added missing calls to `client.stop()` in `JsonHttpClient.ino` (issue #1485)
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* Fixed error `expected ')' before 'char'` when `isdigit()` is a macro (issue #1487)
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* Fixed error `definition of implicit copy constructor is deprecated` on Clang 10
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* PlatformIO: set framework compatibility to `*` (PR #1490 by @maxgerhardt)
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v6.17.2 (2020-11-14)
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-------
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* Fixed invalid conversion error in `operator|(JsonVariant, char*)` (issue #1432)
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* Changed the default value of `ARDUINOJSON_ENABLE_PROGMEM` (issue #1433).
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It now checks that the `pgm_read_XXX` macros are defined before enabling `PROGMEM`.
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v6.17.1 (2020-11-07)
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-------
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* Fixed error `ambiguous overload for 'operator|'` (issue #1411)
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* Fixed `operator|(MemberProxy, JsonObject)` (issue #1415)
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* Allowed more than 32767 values in non-embedded mode (issue #1414)
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v6.17.0 (2020-10-19)
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-------
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* Added a build failure when nullptr is defined as a macro (issue #1355)
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* Added `JsonDocument::overflowed()` which tells if the memory pool was too small (issue #1358)
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* Added `DeserializationError::EmptyInput` which tells if the input was empty
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* Added `DeserializationError::f_str()` which returns a `const __FlashStringHelper*` (issue #846)
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* Added `operator|(JsonVariantConst, JsonVariantConst)`
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* Added filtering for MessagePack (issue #1298, PR #1394 by Luca Passarella)
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* Moved float convertion tables to PROGMEM
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* Fixed `JsonVariant::set((char*)0)` which returned false instead of true (issue #1368)
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* Fixed error `No such file or directory #include <WString.h>` (issue #1381)
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v6.16.1 (2020-08-04)
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-------
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* Fixed `deserializeJson()` that stopped reading after `{}` (issue #1335)
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v6.16.0 (2020-08-01)
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-------
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* Added comparisons (`>`, `>=`, `==`, `!=`, `<`, and `<=`) between `JsonVariant`s
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* Added string deduplication (issue #1303)
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* Added `JsonString::operator!=`
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* Added wildcard key (`*`) for filters (issue #1309)
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* Set `ARDUINOJSON_DECODE_UNICODE` to `1` by default
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* Fixed `copyArray()` not working with `String`, `ElementProxy`, and `MemberProxy`
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* Fixed error `getOrAddElement is not a member of ElementProxy` (issue #1311)
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* Fixed excessive stack usage when compiled with `-Og` (issues #1210 and #1314)
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* Fixed `Warning[Pa093]: implicit conversion from floating point to integer` on IAR compiler (PR #1328 by @stawiski)
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v6.15.2 (2020-05-15)
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-------
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* CMake: don't build tests when imported in another project
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* CMake: made project arch-independent
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* Visual Studio: fixed error C2766 with flag `/Zc:__cplusplus` (issue #1250)
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* Added support for `JsonDocument` to `copyArray()` (issue #1255)
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* Added support for `enum`s in `as<T>()` and `is<T>()` (issue #1256)
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* Added `JsonVariant` as an input type for `deserializeXxx()`
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For example, you can do: `deserializeJson(doc2, doc1["payload"])`
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* Break the build if using 64-bit integers with ARDUINOJSON_USE_LONG_LONG==0
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v6.15.1 (2020-04-08)
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-------
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* Fixed "maybe-uninitialized" warning (issue #1217)
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* Fixed "statement is unreachable" warning on IAR (issue #1233)
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* Fixed "pointless integer comparison" warning on IAR (issue #1233)
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* Added CMake "install" target (issue #1209)
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* Disabled alignment on AVR (issue #1231)
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v6.15.0 (2020-03-22)
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-------
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* Added `DeserializationOption::Filter` (issue #959)
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* Added example `JsonFilterExample.ino`
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* Changed the array subscript operator to automatically add missing elements
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* Fixed "deprecated-copy" warning on GCC 9 (fixes #1184)
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* Fixed `MemberProxy::set(char[])` not duplicating the string (issue #1191)
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* Fixed enums serialized as booleans (issue #1197)
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* Fixed incorrect string comparison on some platforms (issue #1198)
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* Added move-constructor and move-assignment to `BasicJsonDocument`
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* Added `BasicJsonDocument::garbageCollect()` (issue #1195)
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* Added `StaticJsonDocument::garbageCollect()`
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* Changed copy-constructor of `BasicJsonDocument` to preserve the capacity of the source.
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* Removed copy-constructor of `JsonDocument` (issue #1189)
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> ### BREAKING CHANGES
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>
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> #### Copy-constructor of `BasicJsonDocument`
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>
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> In previous versions, the copy constructor of `BasicJsonDocument` looked at the source's `memoryUsage()` to choose its capacity.
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> Now, the copy constructor of `BasicJsonDocument` uses the same capacity as the source.
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>
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> Example:
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>
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> ```c++
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> DynamicJsonDocument doc1(64);
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> doc1.set(String("example"));
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>
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> DynamicJsonDocument doc2 = doc1;
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> Serial.print(doc2.capacity()); // 8 with ArduinoJson 6.14
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> // 64 with ArduinoJson 6.15
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> ```
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>
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> I made this change to get consistent results between copy-constructor and move-constructor, and whether RVO applies or not.
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>
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> If you use the copy-constructor to optimize your documents, you can use `garbageCollect()` or `shrinkToFit()` instead.
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>
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> #### Copy-constructor of `JsonDocument`
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>
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> In previous versions, it was possible to create a function that take a `JsonDocument` by value.
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>
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> ```c++
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> void myFunction(JsonDocument doc) {}
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> ```
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>
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> This function gives the wrong clues because it doesn't receive a copy of the `JsonDocument`, only a sliced version.
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> It worked because the copy constructor copied the internal pointers, but it was an accident.
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>
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> From now, if you need to pass a `JsonDocument` to a function, you must use a reference:
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>
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> ```c++
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> void myFunction(JsonDocument& doc) {}
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> ```
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v6.14.1 (2020-01-27)
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-------
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* Fixed regression in UTF16 decoding (issue #1173)
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* Fixed `containsKey()` on `JsonVariantConst`
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* Added `getElement()` and `getMember()` to `JsonVariantConst`
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v6.14.0 (2020-01-16)
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-------
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* Added `BasicJsonDocument::shrinkToFit()`
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* Added support of `uint8_t` for `serializeJson()`, `serializeJsonPretty()`, and `serializeMsgPack()` (issue #1142)
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* Added `ARDUINOJSON_ENABLE_COMMENTS` to enable support for comments (defaults to 0)
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* Auto enable support for `std::string` and `std::stream` on modern compilers (issue #1156)
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(No need to define `ARDUINOJSON_ENABLE_STD_STRING` and `ARDUINOJSON_ENABLE_STD_STREAM` anymore)
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* Improved decoding of UTF-16 surrogate pairs (PR #1157 by @kaysievers)
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(ArduinoJson now produces standard UTF-8 instead of CESU-8)
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* Added `measureJson`, `measureJsonPretty`, and `measureMsgPack` to `keywords.txt`
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(This file is used for syntax highlighting in the Arduino IDE)
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* Fixed `variant.is<nullptr_t>()`
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* Fixed value returned by `serializeJson()`, `serializeJsonPretty()`, and `serializeMsgPack()` when writing to a `String`
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* Improved speed of `serializeJson()`, `serializeJsonPretty()`, and `serializeMsgPack()` when writing to a `String`
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> ### BREAKING CHANGES
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>
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> #### Comments
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>
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> Support for comments in input is now optional and disabled by default.
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>
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> If you need support for comments, you must defined `ARDUINOJSON_ENABLE_COMMENTS` to `1`; otherwise, you'll receive `InvalidInput` errors.
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>
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> ```c++
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> #define ARDUINOJSON_ENABLE_COMMENTS 1
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> #include <ArduinoJson.h>
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> ```
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v6.13.0 (2019-11-01)
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-------
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* Added support for custom writer/reader classes (issue #1088)
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* Added conversion from `JsonArray` and `JsonObject` to `bool`, to be consistent with `JsonVariant`
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* Fixed `deserializeJson()` when input contains duplicate keys (issue #1095)
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* Improved `deserializeMsgPack()` speed by reading several bytes at once
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* Added detection of Atmel AVR8/GNU C Compiler (issue #1112)
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* Fixed deserializer that stopped reading at the first `0xFF` (PR #1118 by @mikee47)
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* Fixed dangling reference in copies of `MemberProxy` and `ElementProxy` (issue #1120)
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v6.12.0 (2019-09-05)
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-------
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* Use absolute instead of relative includes (issue #1072)
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* Changed `JsonVariant::as<bool>()` to return `true` for any non-null value (issue #1005)
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* Moved ancillary files to `extras/` (issue #1011)
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v6.11.5 (2019-08-23)
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-------
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* Added fallback implementations of `strlen_P()`, `strncmp_P()`, `strcmp_P()`, and `memcpy_P()` (issue #1073)
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v6.11.4 (2019-08-12)
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-------
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* Added `measureJson()` to the `ArduinoJson` namespace (PR #1069 by @nomis)
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* Added support for `basic_string<char, traits, allocator>` (issue #1045)
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* Fixed example `JsonConfigFile.ino` for ESP8266
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* Include `Arduino.h` if `ARDUINO` is defined (PR #1071 by @nomis)
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v6.11.3 (2019-07-22)
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-------
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* Added operators `==` and `!=` for `JsonDocument`, `ElementProxy`, and `MemberProxy`
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* Fixed comparison of `JsonVariant` when one contains a linked string and the other contains an owned string (issue #1051)
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v6.11.2 (2019-07-08)
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-------
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* Fixed assignment of `JsonDocument` to `JsonVariant` (issue #1023)
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* Fix invalid conversion error on Particle Argon (issue #1035)
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v6.11.1 (2019-06-21)
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-------
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* Fixed `serialized()` not working with Flash strings (issue #1030)
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v6.11.0 (2019-05-26)
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-------
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* Fixed `deserializeJson()` silently accepting a `Stream*` (issue #978)
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* Fixed invalid result from `operator|` (issue #981)
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* Made `deserializeJson()` more picky about trailing characters (issue #980)
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* Added `ARDUINOJSON_ENABLE_NAN` (default=0) to enable NaN in JSON (issue #973)
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* Added `ARDUINOJSON_ENABLE_INFINITY` (default=0) to enable Infinity in JSON
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* Removed implicit conversion in comparison operators (issue #998)
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* Added lexicographical comparison for `JsonVariant`
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* Added support for `nullptr` (issue #998)
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> ### BREAKING CHANGES
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>
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> #### NaN and Infinity
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>
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> The JSON specification allows neither NaN not Infinity, but previous
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> versions of ArduinoJson supported it. Now, ArduinoJson behaves like most
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> other libraries: a NaN or and Infinity in the `JsonDocument`, becomes
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> a `null` in the output JSON. Also, `deserializeJson()` returns
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> `InvalidInput` if the JSON document contains NaN or Infinity.
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>
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> This version still supports NaN and Infinity in JSON documents, but
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> it's disabled by default to be compatible with other JSON parsers.
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> If you need the old behavior back, define `ARDUINOJSON_ENABLE_NAN` and
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> `ARDUINOJSON_ENABLE_INFINITY` to `1`;:
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>
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> ```c++
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> #define ARDUINOJSON_ENABLE_NAN 1
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> #define ARDUINOJSON_ENABLE_INFINITY 1
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> #include <ArduinoJson.h>
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> ```
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>
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> #### The "or" operator
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>
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> This version slightly changes the behavior of the | operator when the
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> variant contains a float and the user requests an integer.
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>
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> Older versions returned the floating point value truncated.
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> Now, it returns the default value.
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>
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> ```c++
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> // suppose variant contains 1.2
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> int value = variant | 3;
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>
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> // old behavior:
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> value == 1
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>
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> // new behavior
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> value == 3
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> ```
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>
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> If you need the old behavior, you must add `if (variant.is<float>())`.
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v6.10.1 (2019-04-23)
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-------
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* Fixed error "attributes are not allowed on a function-definition"
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* Fixed `deserializeJson()` not being picky enough (issue #969)
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* Fixed error "no matching function for call to write(uint8_t)" (issue #972)
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v6.10.0 (2019-03-22)
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-------
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* Fixed an integer overflow in the JSON deserializer
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* Added overflow handling in `JsonVariant::as<T>()` and `JsonVariant::is<T>()`.
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- `as<T>()` returns `0` if the integer `T` overflows
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- `is<T>()` returns `false` if the integer `T` overflows
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* Added `BasicJsonDocument` to support custom allocator (issue #876)
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* Added `JsonDocument::containsKey()` (issue #938)
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* Added `JsonVariant::containsKey()`
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v6.9.1 (2019-03-01)
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------
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* Fixed warning "unused variable" with GCC 4.4 (issue #912)
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* Fixed warning "cast increases required alignment" (issue #914)
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* Fixed warning "conversion may alter value" (issue #914)
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* Fixed naming conflict with "CAPACITY" (issue #839)
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* Muted warning "will change in GCC 7.1" (issue #914)
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* Added a clear error message for `StaticJsonBuffer` and `DynamicJsonBuffer`
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* Marked ArduinoJson.h as a "system header"
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v6.9.0 (2019-02-26)
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------
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* Decode escaped Unicode characters like \u00DE (issue #304, PR #791)
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Many thanks to Daniel Schulte (aka @trilader) who implemented this feature.
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* Added option ARDUINOJSON_DECODE_UNICODE to enable it
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* Converted `JsonArray::copyFrom()/copyTo()` to free functions `copyArray()`
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* Renamed `JsonArray::copyFrom()` and `JsonObject::copyFrom()` to `set()`
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* Renamed `JsonArray::get()` to `getElement()`
|
|
* Renamed `JsonArray::add()` (without arg) to `addElement()`
|
|
* Renamed `JsonObject::get()` to `getMember()`
|
|
* Renamed `JsonObject::getOrCreate()` to `getOrAddMember()`
|
|
* Fixed `JsonVariant::isNull()` not returning `true` after `set((char*)0)`
|
|
* Fixed segfault after `variant.set(serialized((char*)0))`
|
|
* Detect `IncompleteInput` in `false`, `true`, and `null`
|
|
* Added `JsonDocument::size()`
|
|
* Added `JsonDocument::remove()`
|
|
* Added `JsonVariant::clear()`
|
|
* Added `JsonVariant::remove()`
|
|
|
|
v6.8.0-beta (2019-01-30)
|
|
-----------
|
|
|
|
* Import functions in the ArduinoJson namespace to get clearer errors
|
|
* Improved syntax highlighting in Arduino IDE
|
|
* Removed default capacity of `DynamicJsonDocument`
|
|
* `JsonArray::copyFrom()` accepts `JsonArrayConst`
|
|
* `JsonVariant::set()` accepts `JsonArrayConst` and `JsonObjectConst`
|
|
* `JsonDocument` was missing in the ArduinoJson namespace
|
|
* Added `memoryUsage()` to `JsonArray`, `JsonObject`, and `JsonVariant`
|
|
* Added `nesting()` to `JsonArray`, `JsonDocument`, `JsonObject`, and `JsonVariant`
|
|
* Replaced `JsonDocument::nestingLimit` with an additional parameter
|
|
to `deserializeJson()` and `deserializeMsgPack()`
|
|
* Fixed uninitialized variant in `JsonDocument`
|
|
* Fixed `StaticJsonDocument` copy constructor and copy assignment
|
|
* The copy constructor of `DynamicJsonDocument` chooses the capacity according to the memory usage of the source, not from the capacity of the source.
|
|
* Added the ability to create/assign a `StaticJsonDocument`/`DynamicJsonDocument` from a `JsonArray`/`JsonObject`/`JsonVariant`
|
|
* Added `JsonDocument::isNull()`
|
|
* Added `JsonDocument::operator[]`
|
|
* Added `ARDUINOJSON_TAB` to configure the indentation character
|
|
* Reduced the size of the pretty JSON serializer
|
|
* Added `add()`, `createNestedArray()` and `createNestedObject()` to `JsonVariant`
|
|
* `JsonVariant` automatically promotes to `JsonObject` or `JsonArray` on write.
|
|
Calling `JsonVariant::to<T>()` is not required anymore.
|
|
* `JsonDocument` now support the same operations as `JsonVariant`.
|
|
Calling `JsonDocument::as<T>()` is not required anymore.
|
|
* Fixed example `JsonHttpClient.ino`
|
|
* User can now use a `JsonString` as a key or a value
|
|
|
|
> ### BREAKING CHANGES
|
|
>
|
|
> #### `DynamicJsonDocument`'s constructor
|
|
>
|
|
> The parameter to the constructor of `DynamicJsonDocument` is now mandatory
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> DynamicJsonDocument doc;
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> DynamicJsonDocument doc(1024);
|
|
> ```
|
|
>
|
|
> #### Nesting limit
|
|
>
|
|
> `JsonDocument::nestingLimit` was replaced with a new parameter to `deserializeJson()` and `deserializeMsgPack()`.
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> doc.nestingLimit = 15;
|
|
> deserializeJson(doc, input);
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> deserializeJson(doc, input, DeserializationOption::NestingLimit(15));
|
|
> ```
|
|
|
|
v6.7.0-beta (2018-12-07)
|
|
-----------
|
|
|
|
* Removed the automatic expansion of `DynamicJsonDocument`, it now has a fixed capacity.
|
|
* Restored the monotonic allocator because the code was getting too big
|
|
* Reduced the memory usage
|
|
* Reduced the code size
|
|
* Renamed `JsonKey` to `JsonString`
|
|
* Removed spurious files in the Particle library
|
|
|
|
v6.6.0-beta (2018-11-13)
|
|
-----------
|
|
|
|
* Removed `JsonArray::is<T>(i)` and `JsonArray::set(i,v)`
|
|
* Removed `JsonObject::is<T>(k)` and `JsonObject::set(k,v)`
|
|
* Replaced `T JsonArray::get<T>(i)` with `JsonVariant JsonArray::get(i)`
|
|
* Replaced `T JsonObject::get<T>(k)` with `JsonVariant JsonObject::get(k)`
|
|
* Added `JSON_STRING_SIZE()`
|
|
* ~~Replacing or removing a value now releases the memory~~
|
|
* Added `DeserializationError::code()` to be used in switch statements (issue #846)
|
|
|
|
v6.5.0-beta (2018-10-13)
|
|
-----------
|
|
|
|
* Added implicit conversion from `JsonArray` and `JsonObject` to `JsonVariant`
|
|
* Allow mixed configuration in compilation units (issue #809)
|
|
* Fixed object keys not being duplicated
|
|
* `JsonPair::key()` now returns a `JsonKey`
|
|
* Increased the default capacity of `DynamicJsonDocument`
|
|
* Fixed `JsonVariant::is<String>()` (closes #763)
|
|
* Added `JsonArrayConst`, `JsonObjectConst`, and `JsonVariantConst`
|
|
* Added copy-constructor and copy-assignment-operator for `JsonDocument` (issue #827)
|
|
|
|
v6.4.0-beta (2018-09-11)
|
|
-----------
|
|
|
|
* Copy `JsonArray` and `JsonObject`, instead of storing pointers (issue #780)
|
|
* Added `JsonVariant::to<JsonArray>()` and `JsonVariant::to<JsonObject>()`
|
|
|
|
v6.3.0-beta (2018-08-31)
|
|
-----------
|
|
|
|
* Implemented reference semantics for `JsonVariant`
|
|
* Replaced `JsonPair`'s `key` and `value` with `key()` and `value()`
|
|
* Fixed `serializeJson(obj[key], dst)` (issue #794)
|
|
|
|
> ### BREAKING CHANGES
|
|
>
|
|
> #### JsonVariant
|
|
>
|
|
> `JsonVariant` now has a semantic similar to `JsonObject` and `JsonArray`.
|
|
> It's a reference to a value stored in the `JsonDocument`.
|
|
> As a consequence, a `JsonVariant` cannot be used as a standalone variable anymore.
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> JsonVariant myValue = 42;
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> DynamicJsonDocument doc;
|
|
> JsonVariant myValue = doc.to<JsonVariant>();
|
|
> myValue.set(42);
|
|
> ```
|
|
>
|
|
> #### JsonPair
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> for(JsonPair p : myObject) {
|
|
> Serial.println(p.key);
|
|
> Serial.println(p.value.as<int>());
|
|
> }
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> for(JsonPair p : myObject) {
|
|
> Serial.println(p.key());
|
|
> Serial.println(p.value().as<int>());
|
|
> }
|
|
> ```
|
|
>
|
|
> CAUTION: the key is now read only!
|
|
|
|
v6.2.3-beta (2018-07-19)
|
|
-----------
|
|
|
|
* Fixed exception when using Flash strings as object keys (issue #784)
|
|
|
|
v6.2.2-beta (2018-07-18)
|
|
-----------
|
|
|
|
* Fixed `invalid application of 'sizeof' to incomplete type '__FlashStringHelper'` (issue #783)
|
|
* Fixed `char[]` not duplicated when passed to `JsonVariant::operator[]`
|
|
|
|
v6.2.1-beta (2018-07-17)
|
|
-----------
|
|
|
|
* Fixed `JsonObject` not inserting keys of type `String` (issue #782)
|
|
|
|
v6.2.0-beta (2018-07-12)
|
|
-----------
|
|
|
|
* Disabled lazy number deserialization (issue #772)
|
|
* Fixed `JsonVariant::is<int>()` that returned true for empty strings
|
|
* Improved float serialization when `-fsingle-precision-constant` is used
|
|
* Renamed function `RawJson()` to `serialized()`
|
|
* `serializeMsgPack()` now supports values marked with `serialized()`
|
|
|
|
> ### BREAKING CHANGES
|
|
>
|
|
> #### Non quoted strings
|
|
>
|
|
> Non quoted strings are now forbidden in values, but they are still allowed in keys.
|
|
> For example, `{key:"value"}` is accepted, but `{key:value}` is not.
|
|
>
|
|
> #### Preformatted values
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> object["values"] = RawJson("[1,2,3,4]");
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> object["values"] = serialized("[1,2,3,4]");
|
|
> ```
|
|
|
|
v6.1.0-beta (2018-07-02)
|
|
-----------
|
|
|
|
* Return `JsonArray` and `JsonObject` by value instead of reference (issue #309)
|
|
* Replaced `success()` with `isNull()`
|
|
|
|
> ### BREAKING CHANGES
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> JsonObject& obj = doc.to<JsonObject>();
|
|
> JsonArray& arr = obj.createNestedArray("key");
|
|
> if (!arr.success()) {
|
|
> Serial.println("Not enough memory");
|
|
> return;
|
|
> }
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> JsonObject obj = doc.to<JsonObject>();
|
|
> JsonArray arr = obj.createNestedArray("key");
|
|
> if (arr.isNull()) {
|
|
> Serial.println("Not enough memory");
|
|
> return;
|
|
> }
|
|
> ```
|
|
|
|
v6.0.1-beta (2018-06-11)
|
|
-----------
|
|
|
|
* Fixed conflicts with `isnan()` and `isinf()` macros (issue #752)
|
|
|
|
v6.0.0-beta (2018-06-07)
|
|
-----------
|
|
|
|
* 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
|
|
-------
|
|
|
|
* Fixed `JsonBuffer::parse()` not respecting nesting limit correctly (issue #693)
|
|
* Fixed inconsistencies in nesting level counting (PR #695 from Zhenyu Wu)
|
|
* Fixed null values that could be pass to `strcmp()` (PR #745 from Mike Karlesky)
|
|
* Added macros `ARDUINOJSON_VERSION`, `ARDUINOJSON_VERSION_MAJOR`...
|
|
|
|
v5.13.1
|
|
-------
|
|
|
|
* Fixed `JsonVariant::operator|(int)` that returned the default value if the variant contained a double (issue #675)
|
|
* Allowed non-quoted key to contain underscores (issue #665)
|
|
|
|
v5.13.0
|
|
-------
|
|
|
|
* Changed the rules of string duplication (issue #658)
|
|
* `RawJson()` accepts any kind of string and obeys to the same rules for duplication
|
|
* Changed the return type of `strdup()` to `const char*` to prevent double duplication
|
|
* Marked `strdup()` as deprecated
|
|
|
|
> ### New rules for string duplication
|
|
>
|
|
> | type | duplication |
|
|
> |:---------------------------|:------------|
|
|
> | const char* | no |
|
|
> | char* | ~~no~~ yes |
|
|
> | String | yes |
|
|
> | std::string | yes |
|
|
> | const __FlashStringHelper* | yes |
|
|
>
|
|
> These new rules make `JsonBuffer::strdup()` useless.
|
|
|
|
v5.12.0
|
|
-------
|
|
|
|
* Added `JsonVariant::operator|` to return a default value (see below)
|
|
* Added a clear error message when compiled as C instead of C++ (issue #629)
|
|
* Added detection of MPLAB XC compiler (issue #629)
|
|
* Added detection of Keil ARM Compiler (issue #629)
|
|
* Added an example that shows how to save and load a configuration file
|
|
* Reworked all other examples
|
|
|
|
> ### How to use the new feature?
|
|
>
|
|
> If you have a block like this:
|
|
>
|
|
> ```c++
|
|
> const char* ssid = root["ssid"];
|
|
> if (!ssid)
|
|
> ssid = "default ssid";
|
|
> ```
|
|
>
|
|
> You can simplify like that:
|
|
>
|
|
> ```c++
|
|
> const char* ssid = root["ssid"] | "default ssid";
|
|
> ```
|
|
|
|
v5.11.2
|
|
-------
|
|
|
|
* Fixed `DynamicJsonBuffer::clear()` not resetting allocation size (issue #561)
|
|
* Fixed incorrect rounding for float values (issue #588)
|
|
|
|
v5.11.1
|
|
-------
|
|
|
|
* Removed dependency on `PGM_P` as Particle 0.6.2 doesn't define it (issue #546)
|
|
* Fixed warning "dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]"
|
|
* Fixed warning "floating constant exceeds range of 'float' [-Woverflow]" (issue #544)
|
|
* Fixed warning "this statement may fall through" [-Wimplicit-fallthrough=] (issue #539)
|
|
* Removed `ARDUINOJSON_DOUBLE_IS_64BITS` as it became useless.
|
|
* Fixed too many decimals places in float serialization (issue #543)
|
|
|
|
v5.11.0
|
|
-------
|
|
|
|
* Made `JsonBuffer` non-copyable (PR #524 by @luisrayas3)
|
|
* Added `StaticJsonBuffer::clear()`
|
|
* Added `DynamicJsonBuffer::clear()`
|
|
|
|
v5.10.1
|
|
-------
|
|
|
|
* Fixed IntelliSense errors in Visual Micro (issue #483)
|
|
* Fixed compilation in IAR Embedded Workbench (issue #515)
|
|
* Fixed reading "true" as a float (issue #516)
|
|
* Added `ARDUINOJSON_DOUBLE_IS_64BITS`
|
|
* Added `ARDUINOJSON_EMBEDDED_MODE`
|
|
|
|
v5.10.0
|
|
-------
|
|
|
|
* Removed configurable number of decimal places (issues #288, #427 and #506)
|
|
* Changed exponentiation thresholds to `1e7` and `1e-5` (issues #288, #427 and #506)
|
|
* `JsonVariant::is<double>()` now returns `true` for integers
|
|
* Fixed error `IsBaseOf is not a member of ArduinoJson::TypeTraits` (issue #495)
|
|
* Fixed error `forming reference to reference` (issue #495)
|
|
|
|
> ### BREAKING CHANGES :warning:
|
|
>
|
|
> | Old syntax | New syntax |
|
|
> |:--------------------------------|:--------------------|
|
|
> | `double_with_n_digits(3.14, 2)` | `3.14` |
|
|
> | `float_with_n_digits(3.14, 2)` | `3.14f` |
|
|
> | `obj.set("key", 3.14, 2)` | `obj["key"] = 3.14` |
|
|
> | `arr.add(3.14, 2)` | `arr.add(3.14)` |
|
|
>
|
|
> | Input | Old output | New output |
|
|
> |:----------|:-----------|:-----------|
|
|
> | `3.14159` | `3.14` | `3.14159` |
|
|
> | `42.0` | `42.00` | `42` |
|
|
> | `0.0` | `0.00` | `0` |
|
|
>
|
|
> | Expression | Old result | New result |
|
|
> |:-------------------------------|:-----------|:-----------|
|
|
> | `JsonVariant(42).is<int>()` | `true` | `true` |
|
|
> | `JsonVariant(42).is<float>()` | `false` | `true` |
|
|
> | `JsonVariant(42).is<double>()` | `false` | `true` |
|
|
|
|
v5.9.0
|
|
------
|
|
|
|
* Added `JsonArray::remove(iterator)` (issue #479)
|
|
* Added `JsonObject::remove(iterator)`
|
|
* Renamed `JsonArray::removeAt(size_t)` into `remove(size_t)`
|
|
* Renamed folder `include/` to `src/`
|
|
* Fixed warnings `floating constant exceeds range of float`and `floating constant truncated to zero` (issue #483)
|
|
* Removed `Print` class and converted `printTo()` to a template method (issue #276)
|
|
* Removed example `IndentedPrintExample.ino`
|
|
* Now compatible with Particle 0.6.1, thanks to Jacob Nite (issue #294 and PR #461 by @foodbag)
|
|
|
|
v5.8.4
|
|
------
|
|
|
|
* Added custom implementation of `strtod()` (issue #453)
|
|
* Added custom implementation of `strtol()` (issue #465)
|
|
* `char` is now treated as an integral type (issue #337, #370)
|
|
|
|
v5.8.3
|
|
------
|
|
|
|
* Fixed an access violation in `DynamicJsonBuffer` when memory allocation fails (issue #433)
|
|
* Added operators `==` and `!=` for two `JsonVariant`s (issue #436)
|
|
* Fixed `JsonVariant::operator[const FlashStringHelper*]` (issue #441)
|
|
|
|
v5.8.2
|
|
------
|
|
|
|
* Fixed parsing of comments (issue #421)
|
|
* Fixed ignored `Stream` timeout (issue #422)
|
|
* Made sure we don't read more that necessary (issue #422)
|
|
* Fixed error when the key of a `JsonObject` is a `char[]` (issue #423)
|
|
* Reduced code size when using `const` references
|
|
* Fixed error with string of type `unsigned char*` (issue #428)
|
|
* Added `deprecated` attribute on `asArray()`, `asObject()` and `asString()` (issue #420)
|
|
|
|
v5.8.1
|
|
------
|
|
|
|
* Fixed error when assigning a `volatile int` to a `JsonVariant` (issue #415)
|
|
* Fixed errors with Variable Length Arrays (issue #416)
|
|
* Fixed error when both `ARDUINOJSON_ENABLE_STD_STREAM` and `ARDUINOJSON_ENABLE_ARDUINO_STREAM` are set to `1`
|
|
* Fixed error "Stream does not name a type" (issue #412)
|
|
|
|
v5.8.0
|
|
------
|
|
|
|
* Added operator `==` to compare `JsonVariant` and strings (issue #402)
|
|
* Added support for `Stream` (issue #300)
|
|
* Reduced memory consumption by not duplicating spaces and comments
|
|
|
|
> ### BREAKING CHANGES :warning:
|
|
>
|
|
> `JsonBuffer::parseObject()` and `JsonBuffer::parseArray()` have been pulled down to the derived classes `DynamicJsonBuffer` and `StaticJsonBufferBase`.
|
|
>
|
|
> This means that if you have code like:
|
|
>
|
|
> ```c++
|
|
> void myFunction(JsonBuffer& jsonBuffer);
|
|
> ```
|
|
>
|
|
> you need to replace it with one of the following:
|
|
>
|
|
> ```c++
|
|
> void myFunction(DynamicJsonBuffer& jsonBuffer);
|
|
> void myFunction(StaticJsonBufferBase& jsonBuffer);
|
|
> template<typename TJsonBuffer> void myFunction(TJsonBuffer& jsonBuffer);
|
|
> ```
|
|
|
|
v5.7.3
|
|
------
|
|
|
|
* Added an `printTo(char[N])` and `prettyPrintTo(char[N])` (issue #292)
|
|
* Added ability to set a nested value like this: `root["A"]["B"] = "C"` (issue #352)
|
|
* Renamed `*.ipp` to `*Impl.hpp` because they were ignored by Arduino IDE (issue #396)
|
|
|
|
v5.7.2
|
|
------
|
|
|
|
* Made PROGMEM available on more platforms (issue #381)
|
|
* Fixed PROGMEM causing an exception on ESP8266 (issue #383)
|
|
|
|
v5.7.1
|
|
------
|
|
|
|
* Added support for PROGMEM (issue #76)
|
|
* Fixed compilation error when index is not an `int` (issue #381)
|
|
|
|
v5.7.0
|
|
------
|
|
|
|
* Templatized all functions using `String` or `std::string`
|
|
* Removed `ArduinoJson::String`
|
|
* Removed `JsonVariant::defaultValue<T>()`
|
|
* Removed non-template `JsonObject::get()` and `JsonArray.get()`
|
|
* Fixed support for `StringSumHelper` (issue #184)
|
|
* Replaced `ARDUINOJSON_USE_ARDUINO_STRING` by `ARDUINOJSON_ENABLE_STD_STRING` and `ARDUINOJSON_ENABLE_ARDUINO_STRING` (issue #378)
|
|
* Added example `StringExample.ino` to show where `String` can be used
|
|
* Increased default nesting limit to 50 when compiled for a computer (issue #349)
|
|
|
|
> ### BREAKING CHANGES :warning:
|
|
>
|
|
> The non-template functions `JsonObject::get()` and `JsonArray.get()` have been removed. This means that you need to explicitely tell the type you expect in return.
|
|
>
|
|
> Old code:
|
|
>
|
|
> ```c++
|
|
> #define ARDUINOJSON_USE_ARDUINO_STRING 0
|
|
> JsonVariant value1 = myObject.get("myKey");
|
|
> JsonVariant value2 = myArray.get(0);
|
|
> ```
|
|
>
|
|
> New code:
|
|
>
|
|
> ```c++
|
|
> #define ARDUINOJSON_ENABLE_ARDUINO_STRING 0
|
|
> #define ARDUINOJSON_ENABLE_STD_STRING 1
|
|
> JsonVariant value1 = myObject.get<JsonVariant>("myKey");
|
|
> JsonVariant value2 = myArray.get<JsonVariant>(0);
|
|
> ```
|
|
|
|
v5.6.7
|
|
------
|
|
|
|
* Fixed `array[idx].as<JsonVariant>()` and `object[key].as<JsonVariant>()`
|
|
* Fixed return value of `JsonObject::set()` (issue #350)
|
|
* Fixed undefined behavior in `Prettyfier` and `Print` (issue #354)
|
|
* Fixed parser that incorrectly rejected floats containing a `+` (issue #349)
|
|
|
|
v5.6.6
|
|
------
|
|
|
|
* Fixed `-Wparentheses` warning introduced in v5.6.5 (PR #335 by @nuket)
|
|
* Added `.mbedignore` for ARM mbdeb (PR #334 by @nuket)
|
|
* Fixed `JsonVariant::success()` which didn't propagate `JsonArray::success()` nor `JsonObject::success()` (issue #342).
|
|
|
|
v5.6.5
|
|
------
|
|
|
|
* `as<char*>()` now returns `true` when input is `null` (issue #330)
|
|
|
|
v5.6.4
|
|
------
|
|
|
|
* Fixed error in float serialization (issue #324)
|
|
|
|
v5.6.3
|
|
------
|
|
|
|
* Improved speed of float serialization (about twice faster)
|
|
* Added `as<JsonArray>()` as a synonym for `as<JsonArray&>()`... (issue #291)
|
|
* Fixed `call of overloaded isinf(double&) is ambiguous` (issue #284)
|
|
|
|
v5.6.2
|
|
------
|
|
|
|
* Fixed build when another lib does `#undef isnan` (issue #284)
|
|
|
|
v5.6.1
|
|
------
|
|
|
|
* Added missing `#pragma once` (issue #310)
|
|
|
|
v5.6.0
|
|
------
|
|
|
|
* ArduinoJson is now a header-only library (issue #199)
|
|
|
|
v5.5.1
|
|
------
|
|
|
|
* Fixed compilation error with Intel Galileo (issue #299)
|
|
|
|
v5.5.0
|
|
------
|
|
|
|
* Added `JsonVariant::success()` (issue #279)
|
|
* Renamed `JsonVariant::invalid<T>()` to `JsonVariant::defaultValue<T>()`
|
|
|
|
v5.4.0
|
|
------
|
|
|
|
* Changed `::String` to `ArduinoJson::String` (issue #275)
|
|
* Changed `::Print` to `ArduinoJson::Print` too
|
|
|
|
v5.3.0
|
|
------
|
|
|
|
* Added custom implementation of `ftoa` (issues #266, #267, #269 and #270)
|
|
* Added `JsonVariant JsonBuffer::parse()` (issue #265)
|
|
* Fixed `unsigned long` printed as `signed long` (issue #170)
|
|
|
|
v5.2.0
|
|
------
|
|
|
|
* Added `JsonVariant::as<char*>()` as a synonym for `JsonVariant::as<const char*>()` (issue #257)
|
|
* Added example `JsonHttpClient` (issue #256)
|
|
* Added `JsonArray::copyTo()` and `JsonArray::copyFrom()` (issue #254)
|
|
* Added `RawJson()` to insert pregenerated JSON portions (issue #259)
|
|
|
|
v5.1.1
|
|
------
|
|
|
|
* Removed `String` duplication when one replaces a value in a `JsonObject` (PR #232 by @ulion)
|
|
|
|
v5.1.0
|
|
------
|
|
|
|
* Added support of `long long` (issue #171)
|
|
* Moved all build settings to `ArduinoJson/Configuration.hpp`
|
|
|
|
> ### BREAKING CHANGE :warning:
|
|
>
|
|
> If you defined `ARDUINOJSON_ENABLE_STD_STREAM`, you now need to define it to `1`.
|
|
|
|
v5.0.8
|
|
------
|
|
|
|
* Made the library compatible with [PlatformIO](http://platformio.org/) (issue #181)
|
|
* Fixed `JsonVariant::is<bool>()` that was incorrectly returning false (issue #214)
|
|
|
|
v5.0.7
|
|
------
|
|
|
|
* Made library easier to use from a CMake project: simply `add_subdirectory(ArduinoJson/src)`
|
|
* Changed `String` to be a `typedef` of `std::string` (issues #142 and #161)
|
|
|
|
> ### BREAKING CHANGES :warning:
|
|
>
|
|
> - `JsonVariant(true).as<String>()` now returns `"true"` instead of `"1"`
|
|
> - `JsonVariant(false).as<String>()` now returns `"false"` instead of `"0"`
|
|
|
|
v5.0.6
|
|
------
|
|
|
|
* Added parameter to `DynamicJsonBuffer` constructor to set initial size (issue #152)
|
|
* Fixed warning about library category in Arduino 1.6.6 (issue #147)
|
|
* Examples: Added a loop to wait for serial port to be ready (issue #156)
|
|
|
|
v5.0.5
|
|
------
|
|
|
|
* Added overload `JsonObjectSuscript::set(value, decimals)` (issue #143)
|
|
* Use `float` instead of `double` to reduce the size of `JsonVariant` (issue #134)
|
|
|
|
v5.0.4
|
|
------
|
|
|
|
* Fixed ambiguous overload with `JsonArraySubscript` and `JsonObjectSubscript` (issue #122)
|
|
|
|
v5.0.3
|
|
------
|
|
|
|
* Fixed `printTo(String)` which wrote numbers instead of strings (issue #120)
|
|
* Fixed return type of `JsonArray::is<T>()` and some others (issue #121)
|
|
|
|
v5.0.2
|
|
------
|
|
|
|
* Fixed segmentation fault in `parseObject(String)` and `parseArray(String)`, when the
|
|
`StaticJsonBuffer` is too small to hold a copy of the string
|
|
* Fixed Clang warning "register specifier is deprecated" (issue #102)
|
|
* Fixed GCC warning "declaration shadows a member" (issue #103)
|
|
* Fixed memory alignment, which made ESP8266 crash (issue #104)
|
|
* Fixed compilation on Visual Studio 2010 and 2012 (issue #107)
|
|
|
|
v5.0.1
|
|
------
|
|
|
|
* Fixed compilation with Arduino 1.0.6 (issue #99)
|
|
|
|
v5.0.0
|
|
------
|
|
|
|
* Added support of `String` class (issues #55, #56, #70, #77)
|
|
* Added `JsonBuffer::strdup()` to make a copy of a string (issues #10, #57)
|
|
* Implicitly call `strdup()` for `String` but not for `char*` (issues #84, #87)
|
|
* Added support of non standard JSON input (issue #44)
|
|
* Added support of comments in JSON input (issue #88)
|
|
* Added implicit cast between numerical types (issues #64, #69, #93)
|
|
* Added ability to read number values as string (issue #90)
|
|
* Redesigned `JsonVariant` to leverage converting constructors instead of assignment operators (issue #66)
|
|
* Switched to new the library layout (requires Arduino 1.0.6 or above)
|
|
|
|
> ### BREAKING CHANGES :warning:
|
|
>
|
|
> - `JsonObject::add()` was renamed to `set()`
|
|
> - `JsonArray::at()` and `JsonObject::at()` were renamed to `get()`
|
|
> - Number of digits of floating point value are now set with `double_with_n_digits()`
|
|
|
|
**Personal note about the `String` class**:
|
|
Support of the `String` class has been added to the library because many people use it in their programs.
|
|
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!
|