Atomi propusi pentru analiza lexicala

Atomi propusi pentru analiza lexicala

*litera*	::= A . . Z \| a . . z
*cifra*	::= *cifraZec* \| A . . F \| a . . f
*cifraZec*	::= 0 . . 9
*identificator*	::= *litera( litera* \| *cifraZec* )^*
*cuvantCheie*	::= and \| begin \| case \| char \| const \| div \| do \| downto \| else \| end \| for \| function \| if \| integer \| mod \| not \| of \| or \| procedure \| program \| real \| repeat \| then \| until \| var \| while
*constNum*	::= *nrIntreg* \| *nrReal*
*nrIntreg*	::= *nrBaza10* \| *baza@cifra* (*cifra* )^*
*nrBaza10*	::= ( *cifraZec* )⁺
*baza*	::= *cifraZec* [ *cifraZec* ]
*nrReal*	::= **nrBaza10.nrBaza10 [ ( E \| e ) ( [ + ] \| - ) expon**]
*expon*	::= *cifraZec* [ *cifraZec* ]
*delimit*	::= ;\| . \| , \| : \| ..
*operator*	::= + \| - \| * \| / \| ( \| ) \| [ \| ] \| < \| <= \| > \| >= \| <> \| = \| :=
*coment*	::= { ( caracter_tiparibil \| *spatiiAlbe* )^*}
*spatiiAlbe*	::= blank \| tab \| CR\LF
*constSir*	::= "( caracter_tiparibil \| blank )^* "
*constChar*	::='caracter_tiparibil \| blank'

Legenda:

Font drept, bold, rosu = caractere care apar ca atare in cadrul atomilor..
Font italic, bold, verde = atomi care necesita definitie (apar ca membri stangi in expresiile regulate).
Font drept, non-bold, mov= caractere redate printr-o denumire generica si nu printr-un simbol grafic. Prin caracter_tiparibil se va intelege un caracter care are corespondent pe tastatura alfanumerica (litere, cifre si semne de punctuatie).
Font drept, non-bold, negru = operatorii metalimbajului de descriere a atomilor (limbajul expresiilor regulate in acest caz).