Gets the current Backus-Naur Form (BNF) grammar of the Qlik engine scripting language, as well as a string hash calculated from that grammar. The BNF rules define the syntax for the script statements and the script or chart functions. If the hash changes between subsequent calls to this method, this indicates that the BNF has changed. In the Qlik engine grammars, a token is a string of one or more characters that is significant as a group. For example, a token could be a function name, a number, a letter, a parenthesis, and so on.
The type of grammar to return:
Description of the scripting language grammar.
A string hash of the BNF definition.