422  11.     

getStringt) ;

validateString() ;

parseString() ;

II...
compareTokens() ;

//.. .
}

-,  language_processor    , -
     :

virtual bool getString(void) = 0;

virtual bool validateString(void) = 0;

virtual bool parseString(void) = 0;

 ,   language_processor    -
 .        .
     process_input ().   
  ,     language_processor. 
           -
.          -
  ,      -
  .       
   .       -
   .    ,   
   ,   ,     ,
   .      -
    .     
      .  -
     .     -
     .   
 ,         
  .  , "" 
process_input (),    .

                           

           -


-                       
      

    language_processsor ( -
    )     
.

        -
,     . ,  -
    " "    
     .      [51] 
    .