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Auto enable std::string and stream on modern compilers (closes #1156)

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This commit is contained in:
Benoit Blanchon
2020-01-04 15:05:20 +01:00
parent 00c391320c
commit 8550418875
2 changed files with 25 additions and 0 deletions
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2
CHANGELOG.md
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@@ -6,6 +6,8 @@ HEAD
* Added `BasicJsonDocument::shrinkToFit()`
* Added support of `uint8_t` for `serializeJson()`, `serializeJsonPretty()`, and `serializeMsgPack()` (issue #1142)
* Auto enable support for `std::string` and `std::stream` on modern compilers (issue #1156)
No need to define `ARDUINOJSON_ENABLE_STD_STRING` and `ARDUINOJSON_ENABLE_STD_STREAM`.
v6.13.0 (2019-11-01)
-------

23
src/ArduinoJson/Configuration.hpp
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@@ -31,6 +31,29 @@
#endif
#endif
// Auto enable std::stream if the right headers are here and no conflicting
// macro is defined
#if !defined(ARDUINOJSON_ENABLE_STD_STREAM) && defined(__has_include)
#if __has_include(<istream>) && \
__has_include(<ostream>) && \
!defined(min) && \
!defined(max)
#define ARDUINOJSON_ENABLE_STD_STREAM 1
#else
#define ARDUINOJSON_ENABLE_STD_STREAM 0
#endif
#endif
// Auto enable std::string if the right header is here and no conflicting
// macro is defined
#if !defined(ARDUINOJSON_ENABLE_STD_STRING) && defined(__has_include)
#if __has_include(<string>) && !defined(min) && !defined(max)
#define ARDUINOJSON_ENABLE_STD_STRING 1
#else
#define ARDUINOJSON_ENABLE_STD_STRING 0
#endif
#endif
#if ARDUINOJSON_EMBEDDED_MODE
// Store floats by default to reduce the memory usage (issue #134)