pub fn look_up_identifier(identifier: &String) -> TokenType {
    if Keywords::all().contains_key(identifier) {
        return Keywords::all()[identifier];
    }
    TokenType::IDENTIFIER
}
/// look_up_identifier checks our keywords map for the scanned keyword. If it finds one, then
/// the keyword's type is returned. If not, the user defined IDENTIFIER is returned
look_up_identifier checks our keywords map for the scanned keyword. If it finds one, then
the keyword's type is returned. If not, the user defined IDENTIFIER is returned
look_up_identifier checks our keywords map for the scanned keyword . If it finds one then the keyword ' s type is returned . If not the user defined IDENTIFIER is returned
pub fn look_up_identifier(identifier: &String) -> TokenType {
    if Keywords::all().contains_key(identifier) {
        return Keywords::all()[identifier];
    }
    TokenType::IDENTIFIER
}
pub fn look_up_identifier ( identifier : & String ) -> TokenType { if Keywords :: all ( ) . contains_key ( identifier ) { return Keywords :: all ( ) [ identifier ] ; } TokenType :: IDENTIFIER }
look_up_identifier checks our keywords map for the scanned keyword.
look_up_identifier checks our keywords map for the scanned keyword .
identifier
&String
identifier
&String