static void Main(string[] args)
{
string s = "S-L=R|R L-*R|x R-L";
//E-TE' E'-+TE'|0 T-FT' T'-*FT'|0 F-(E)|a
//L-E E-E+T|E=T|T T-T*F|T/F|F F-(E)|x
//L-E E-TE' E'-+TE'|=TE'|0 T-FT' T'-*FT'|/FT'|0 F-(E)|x
//S-L=R|R L-*R|x R-L
Parser parser = new Parser {
Src = s, Input = "aaa"
};
parser.Excute();
//parser.Print();
}