json_util.h File Reference

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Data Structures
class	esphome::json::SerializationBuffer< STACK_SIZE >
	Buffer for JSON serialization that uses stack allocation for small payloads. More...
struct	esphome::json::SpiRamAllocator
class	esphome::json::JsonArena< N >
	Bump allocator over a fixed buffer for a document built and serialized in one scope. More...
class	esphome::json::JsonBuilder
	Builder class for creating JSON documents without lambdas. More...

Namespaces
namespace	esphome
namespace	esphome::json

Typedefs
using	esphome::json::json_parse_t = std::function<bool(JsonObject)>
	Callback function typedef for parsing JsonObjects.
using	esphome::json::json_build_t = std::function<void(JsonObject)>
	Callback function typedef for building JsonObjects.

Functions
JsonString	esphome::json::linked (const char *s)
JsonString	esphome::json::linked (const char *s, size_t len)
JsonString	esphome::json::linked (const std::string &s)
JsonString	esphome::json::linked (std::string &&)=delete
ProgmemStr	esphome::json::linked (ProgmemStr s)
SerializationBuffer	esphome::json::build_json (const json_build_t &f)
	Build a JSON string with the provided json build function.
bool	esphome::json::parse_json (const std::string &data, const json_parse_t &f)
	Parse a JSON string and run the provided json parse function if it's valid.
bool	esphome::json::parse_json (const uint8_t *data, size_t len, const json_parse_t &f)
	Parse JSON from raw bytes and run the provided json parse function if it's valid.
JsonDocument	esphome::json::parse_json (const uint8_t *data, size_t len)
	Parse a JSON string and return the root JsonDocument (or an unbound object on error)
JsonDocument	esphome::json::parse_json (const std::string &data)
	Parse a JSON string and return the root JsonDocument (or an unbound object on error)
ArduinoJson::Allocator *	esphome::json::heap_json_allocator ()
	The allocator a JsonBuilder uses by default (PSRAM first when available)

Variables
constexpr size_t	esphome::json::JSON_POOL_BYTES = ARDUINOJSON_POOL_CAPACITY * sizeof(ArduinoJson::detail::VariantData)
	Size of one ArduinoJson slot pool, the first allocation every document makes (1 KB on 32 bit targets)
constexpr size_t	esphome::json::JSON_ARENA_SIZE = JSON_POOL_BYTES + 1152
	One pool plus room for copied string nodes; a 40 option select with linked options fits.