R25 Json Parser Usage

Danchyg1337

Hello! I'm currently trying to transfer S24 plugin code into R25. As i see in changelog, parser_json.h is replaced with parser.h. But the usage is not clear. In the code, i was reading the string with

jsonParser.Read(result, maxon::JSONPARSERFLAGS::NONE, dd) iferr_return;

and jsonParser is

maxon::JsonParserRef jsonParser;

created like this

auto jsonCRes = maxon::JsonParserRef::Create();
if (jsonCRes == maxon::FAILED)
	MessageDialog("JSON parser create fail"_s);
jsonParser = jsonCRes.GetValue();

I couldn't find anything similar to such creation in the new parser. Could you breafly explain how to create a valid ParserRef and call ReadString to convert string into dictionary?
Thanks!

Manuel

Hi,

the parser interface has been changed, you have more parser, and the process is the same for each parser. Create a reference and use it.

Parsers are declared in ParserClasses we have now json, jwt and csv parser.

//----------------------------------------------------------------------------------------
/// Parse a given JSON string and return the JSON data in a maxon::DataDictionary.
/// @param[in] in_string				The string containing a JSON representation.
/// @return											Error code if fail else the DataDictionary.
static maxon::Result<maxon::DataDictionary> ImportJSONFromString(const maxon::String &in_string)
{
	iferr_scope;
	
	// check passed argument
	if (in_string.IsEmpty())
		return maxon::IllegalArgumentError(MAXON_SOURCE_LOCATION, "Passed string is empty."_s);
	
	// create a JSONParser reference
	const maxon::ParserRef jsonParser = maxon::ParserClasses::JsonParser().Create() iferr_return;
	
	// allocate a SingleValueReceiver to store the data read from the JSONParser;
	maxon::SingleValueReceiver<const maxon::DataDictionary&> readData;

	// parse the string  and check it's containing a valid JSON structure
	iferr (jsonParser.ReadString(in_string, maxon::PARSERFLAGS::NONE, maxon::GetUtf8DefaultDecoder(), readData))
	{
		// provided string is not containing a valid JSON structure
		DiagnosticOutput("BLW >> Invalid JSON string [@]");
		iferr_throw(err);
	}

	// return the data
	return readData.Get().GetValue();
}

Cheers,
Manuel

Danchyg1337

@m_magalhaes Thank you!