/* adder2.jj faz soma de valores inteiros */

options {
	STATIC = false;
}
PARSER_BEGIN(Adder2)
	class Adder2 {
		public static void main (String args[]) throws ParseException, TokenMgrError, NumberFormatException {
			Adder2 parser = new Adder2(System.in);
			System.out.println ("Soma: "+parser.Start());
		}
	}
PARSER_END(Adder2)

SKIP: {" "}
SKIP: {"\n"|"\r"|"\r\n"}
TOKEN: { < PLUS: "+" > }
TOKEN: { < NUMBER: (["0"-"9"])+ > }

int Start() throws NumberFormatException :
{
	Token t;
	int value;
	int i;
}
{
	t = <NUMBER>
	{i = Integer.parseInt(t.image);}
	{value = i;}

	( 	<PLUS>
		t = <NUMBER>
		{i = Integer.parseInt( t.image );}
		{ value += i; }
	)*
	<EOF>
	{return value;}
}