import java_cup.runtime.Symbol;

%%

%{
  Symbol makeToken(int id, Object val){
    // yychar and yychar+yylength() are the positions of left and right ends
    return new Symbol(id, yychar, yychar + yylength(), val);
  }

  Symbol makeToken(int id){  // as above but with no attribute value
    return new Symbol(id, yychar, yychar + yylength());
  }
%}

%char
%cup
%cupdebug
%unicode

%%

"/"     {return makeToken(sym.DIVIDE);}
[+-]?[0-9]+  {return makeToken(sym.NUMBER, yytext());}
[+-]?[0-9]+"."[0-9]*  {return makeToken(sym.NUMBER, yytext());}
"0x"[0-9a-fA-F]+  {return makeToken(sym.NUMBER, yytext());}
"-"     {return makeToken(sym.MINUS);}
"*"     {return makeToken(sym.TIMES);}
"("     {return makeToken(sym.LPAREN);}
")"     {return makeToken(sym.RPAREN);}
"%"     {return makeToken(sym.MOD);}
"+"     {return makeToken(sym.PLUS);}
" "|\r|\n|\t|\f      {}
.     {return makeToken(sym.ILLEGAL_CHAR, yytext());}