Package jholtrop.gvsu.cs675.bottomup;

Tokens
    blank = (' ' | 9 | 10 | 13);
    number = ['0' .. '9']+ ('.' ['0' .. '9']+)?;
    plus = '+';
    minus = '-';
    multiply = '*';
    divide = '/';
    l_par = '(';
    r_par = ')';

Ignored Tokens
    blank;

Productions
    expr =
        {addition} expr plus term |
        {subtraction} expr minus term |
        {term} term;

    term =
        {multiplication} term multiply factor |
        {division} term divide factor |
        {factor} factor;

    factor =
        {number} number |
        {paren} l_par expr r_par;