Function get_grammar 

pub fn get_grammar(input: &str) -> Result<Grammar, Err<VerboseError<&str>>>

Get and parse EBNF grammar source into Grammar, returns Err when given grammar is invalid.

Example

use kbnf_syntax::get_grammar;

let grammar_literal = r"
    term ::= '1';
";
let grammar = get_grammar(grammar_literal)?;