err_handler.md

JSON Parsing Error Handling

#include <jsoncons/json_parser.hpp>     // (until 0.171.0)
#include <jsoncons/json_options.hpp>    // (since 0.171.0)

std::function<bool(json_errc,const ser_context&)>

JSON parsing error handling is defined by a function object that receives arguments std::error_code and const ser_context&, and returns a bool. The JSON parser will report all errors through the function object. If the function object returns true, the parser will make an attempt to recover from recoverable errors. If the error is non-recoverable of if the function object returns false, the parser will stop.

The jsoncons library comes with three built-in function objects for JSON parsing error handling:

• default_json_parsing, which returns true if the error code indicates a comment, otherwise false

• strict_json_parsing, which always returns false

• allow_trailing_commas, which returns true if the error code indicates a comment or an extra comma, otherwise false