private Expression Reagent()
{
Expression reagent = Term();
while (Match(TokenType.PLUS))
{
Token plus = Previous();
Expression right = Term();
reagent = new Reagent((Term)reagent, plus, (Reagent)right);
}
return(reagent);
}
public string VisitReagent(Reagent expr)
{
return(Parenthesize("+", expr.left, expr.right));
}
public Equation(Reagent left, Token op, Reagent right)
{
this.left = left;
this.op = op;
this.right = right;
}
public Reagent(Term left, Token plus, Reagent right)
{
this.left = left;
this.plus = plus;
this.right = right;
}
