LexicalAnalysisAnnouncements●ProgrammingAssignment1Out●DueMonday,July9at11:59PM.●Fourhandouts(allavailableonline):●DecafSpecification●LexicalAnalysis●Introtoflex●ProgrammingAssignment1WhereWeAreSourceLexicalAnalysisCodeSyntaxAnalysisSemanticAnalysisIRGenerationIROptimizationCodeGenerationOptimizationMachineCodewhile(ip<z)++ip;while(ip<z)\n\t++ip;while(ip<z)++ip;T_While(T_Ident<T_Ident)++T_Identipzipwhile(ip<z)\n\t++ip;while(ip<z)++ip;While<++IdentIdentIdentipzipT_While(T_Ident<T_Ident)++T_Identipzipwhile(ip<z)\n\t++ip;while(ip<z)++ip;do[for]=new0;do[for]=new0;do[for]=new0;T_Do[T_For]=T_NewT_IntConst0do[for]=new0;do[for]=new0;T_Do[T_For]=T_NewT_IntConst0do[for]=new0;do[for]=new0;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(i1p37<<z)i\n)\t\n\t++i+pi;ScanningaSourceFilewhile(137<i)\n\t++i;T_WhileScanningaSourceFilewhile(137<i)\n\t++i;TheThepiecepieceofofthetheoriginaloriginalprogramprogramfromfromwhichwhichwewemademadethethetokentokenisiscalledcalledaalexemelexeme..T_WhileThisThisisiscalledcalledaatokentoken..YouYoucancanthinkthinkofofititasasananenumeratedenumeratedtypetyperepresentingrepresentingwhatwhatlogicallogicalentityentitywewereadreadoutoutofofthethesourcesourcecode.code.ScanningaSourceFilewhile(137<i)\n\t++i;T_WhileScanningaSourceFilewhile(137<i)\n\t++i;T_WhileScanningaSourceFilewhile(137<i)\n\t++i;T_WhileScanningaSourceFilewhile(137<i)\n\t++i;SometimesSometimeswewewillwilldiscarddiscardaalexemelexemeT_Whileratherratherthanthanstoringstoringititforforlaterlateruse.use.Her