After the rework it is possible to detect use before init errors for function arguments.
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com
Compared to utils, the functions here scan the input (e.g. uses lexer_next_token).
JerryScript-DCO-1.0-Signed-off-by: Zoltan Herczeg zherczeg.u-szeged@partner.samsung.com