| # nlohmann::json_sax |
| |
| ``` |
| template<typename BasicJsonType> |
| struct json_sax; |
| ``` |
| |
| This class describes the SAX interface used by [sax_parse](https://json.nlohmann.me/api/basic_json/sax_parse/index.md). Each function is called in different situations while the input is parsed. The boolean return value informs the parser whether to continue processing the input. |
| |
| ## Template parameters |
| |
| `BasicJsonType` : a specialization of [`basic_json`](https://json.nlohmann.me/api/basic_json/index.md) |
| |
| ## Member types |
| |
| - [**number_integer_t**](https://json.nlohmann.me/api/basic_json/number_integer_t/index.md) - `BasicJsonType`'s type for numbers (integer) |
| - [**number_unsigned_t**](https://json.nlohmann.me/api/basic_json/number_unsigned_t/index.md) - `BasicJsonType`'s type for numbers (unsigned) |
| - [**number_float_t**](https://json.nlohmann.me/api/basic_json/number_float_t/index.md) - `BasicJsonType`'s type for numbers (floating-point) |
| - [**string_t**](https://json.nlohmann.me/api/basic_json/string_t/index.md) - `BasicJsonType`'s type for strings |
| - [**binary_t**](https://json.nlohmann.me/api/basic_json/binary_t/index.md) - `BasicJsonType`'s type for binary arrays |
| |
| ## Member functions |
| |
| - [**binary**](https://json.nlohmann.me/api/json_sax/binary/index.md) (*virtual*) - a binary value was read |
| - [**boolean**](https://json.nlohmann.me/api/json_sax/boolean/index.md) (*virtual*) - a boolean value was read |
| - [**end_array**](https://json.nlohmann.me/api/json_sax/end_array/index.md) (*virtual*) - the end of an array was read |
| - [**end_object**](https://json.nlohmann.me/api/json_sax/end_object/index.md) (*virtual*) - the end of an object was read |
| - [**key**](https://json.nlohmann.me/api/json_sax/key/index.md) (*virtual*) - an object key was read |
| - [**null**](https://json.nlohmann.me/api/json_sax/null/index.md) (*virtual*) - a null value was read |
| - [**number_float**](https://json.nlohmann.me/api/json_sax/number_float/index.md) (*virtual*) - a floating-point number was read |
| - [**number_integer**](https://json.nlohmann.me/api/json_sax/number_integer/index.md) (*virtual*) - an integer number was read |
| - [**number_unsigned**](https://json.nlohmann.me/api/json_sax/number_unsigned/index.md) (*virtual*) - an unsigned integer number was read |
| - [**parse_error**](https://json.nlohmann.me/api/json_sax/parse_error/index.md) (*virtual*) - a parse error occurred |
| - [**start_array**](https://json.nlohmann.me/api/json_sax/start_array/index.md) (*virtual*) - the beginning of an array was read |
| - [**start_object**](https://json.nlohmann.me/api/json_sax/start_object/index.md) (*virtual*) - the beginning of an object was read |
| - [**string**](https://json.nlohmann.me/api/json_sax/string/index.md) (*virtual*) - a string value was read |
| |
| ## Version history |
| |
| - Added in version 3.2.0. |
| - Support for binary values (`binary_t`, `binary`) added in version 3.8.0. |
