This Hands-on Assignment is worth 30 points. Consider the folowing variation of the BNF you worked with for Hands-on 6 Firs let's be sure everyone is parfecty dear on he intepretation of the cdenter) rule. This Tule l u: an iebfer consists ofany aingle lower-case alphabet letter What about the (expression)ule? The first aternawo says. an euvesson can be a, onner "atis.dhk View ow did is a SINGLE LETTER So one posstiyfor an expression is SINGLE LOWERCASE LETTER For eurple. or xorw. The second aternat ve says aneuresson can be 2expressions/0nedby aneoerworrnat is.). Those two "Dressons can be ether ofthe 2 aiternatves, however, S02+b Of e*w.. and so on. NOTE parentheses ARE NOT lowed in this language . . LAo the week 6 grammar, the uni charactnssc of this gamm" is that every 8erme. tant pateofthe linguage consists of ampo dara ter Soyou might corne up wth a categorrason scheme like eet!owng D TOKEN Wrne a reciguer for this gamrw i, the "recursive descent. sty" That a, your sou thoad cide a Karne uetion, as wel sa a colecton of booeen Metam that recogri29the warous parts ofthe grannar. nefer to the attachment that Your program should accept an inpuit string , than uput its datermination that is eer where S is the input ing Use the following te cae You must submit Code-fle save, or copypast into Noepad from your IDE or edior.I must be able to open or copylpaste the code from your submission to "dask-check" and run i mysel Aris of your progar, showing Rcorrecty harded allthe lest cases Acceptatio widence" node se savestom your OE or OS ofd ice, or screen shots Please merge your test case ovide ce no a This Hands-on Assignment is worth 30 points. Consider the folowing variation of the BNF you worked with for Hands-on 6 Firs let's be sure everyone is parfecty dear on he intepretation of the cdenter) rule. This Tule l u: an iebfer consists ofany aingle lower-case alphabet letter What about the (expression)ule? The first aternawo says. an euvesson can be a, onner "atis.dhk View ow did is a SINGLE LETTER So one posstiyfor an expression is SINGLE LOWERCASE LETTER For eurple. or xorw. The second aternat ve says aneuresson can be 2expressions/0nedby aneoerworrnat is.). Those two "Dressons can be ether ofthe 2 aiternatves, however, S02+b Of e*w.. and so on. NOTE parentheses ARE NOT lowed in this language . . LAo the week 6 grammar, the uni charactnssc of this gamm" is that every 8erme. tant pateofthe linguage consists of ampo dara ter Soyou might corne up wth a categorrason scheme like eet!owng D TOKEN Wrne a reciguer for this gamrw i, the "recursive descent. sty" That a, your sou thoad cide a Karne uetion, as wel sa a colecton of booeen Metam that recogri29the warous parts ofthe grannar. nefer to the attachment that Your program should accept an inpuit string , than uput its datermination that is eer where S is the input ing Use the following te cae You must submit Code-fle save, or copypast into Noepad from your IDE or edior.I must be able to open or copylpaste the code from your submission to "dask-check" and run i mysel Aris of your progar, showing Rcorrecty harded allthe lest cases Acceptatio widence" node se savestom your OE or OS ofd ice, or screen shots Please merge your test case ovide ce no a