sinziii

%%

%{

	private void write(String descricao, String lexema) {
		System.out.println(lexema + " - " + descricao);
	}
%}

%class LexicalAnalyzer

%type void

Whitespace 				= [\n| |\t|\r]
Identifier 					= [_|a-z|A-Z][a-z|A-Z|0-9|_]*
Plus				= "+"
Minus					= "-"
MUL					= "*"
DIV				 	= "/"
INTEGER 			= 0|[1-9][0-9]*
FLOAT				= (([0-9]+[.][0-9]*)|([0-9]*[.][0-9]+))
NEWLINE			= [\n]
TEXT				= ((['].[^\x]+[']) | ([\"].[^\x]+[\"]))



%%

"public" 			{write("Reserved word public", yytext()); }
"include"			{write("Reserved word include ", yytext());}
"print"		{write("Write", yytext());}
"read"		{write("Read ", yytext());}
"class"		{write("Class", yytext());}
"enum" 	{write("Enum",yytext());}
"int"		{write("Integer type", yytext());}
"float"			{write("Float", yytext() );}

"{"				{write("left bracket", yytext());}
"}"				{write("right bracket", yytext());}
";"				{write("Instruction end", yytext());}
"("				{write("left parenthesis", yytext());}
")"				{write("right parenthesis", yytext());}
"["				{write("left listpar", yytext());}
"]"				{write("right listpar", yytext());}

{Whitespace} 		{write("Whitespace", yytext()); }
{Identifier} 			{write("Identifier", yytext()); }
{Plus}			{write("Plus operator", yytext());}
{Minus}			{write("Minus operator", yytext());}
{MUL}			{write("Multiplying operator", yytext());}
{DIV}			{write("Division operator", yytext());}
{INTEGER} 		{write("Integer", yytext()); }
{FLOAT}			{write("Float ",yytext());}
{NEWLINE}		{write("\\n \t - \tnew line escape");}
{TEXT}			{write("Text ", yytext());}


">"				{write("Greater than operator", yytext());}
"<"				{write("Less than operator", yytext());}

">="			{write("Greater or equal", yytext());}
"<="			{write("Less or equal", yytext());}

"=="			{write("Equality operator", yytext());}
"="				{write("Attribution operator", yytext());}

"++"			{write("Incremental operator", yytext());}
"--"			{write("Decrement operator", yytext());}

. { throw new RuntimeException("Invalid character " + yytext()); }