void expr(out Expression exp)
{
exp = new Expression();
char? sep = null;
Term trm = null;
term(out trm);
exp.Terms.Add(trm);
while (StartOf(10))
{
if (la.kind == 27 || la.kind == 44)
{
if (la.kind == 44)
{
Get();
sep = '/';
}
else
{
Get();
sep = ',';
}
}
term(out trm);
if (sep.HasValue) { trm.Seperator = sep.Value; }
exp.Terms.Add(trm);
sep = null;
}
}
static string Render(Expression exp)
{
StringBuilder txt = new StringBuilder();
bool first = true;
foreach (Term t in exp.Terms)
{
if (first)
{
first = false;
}
else
{
txt.AppendFormat("{0} ", t.Seperator.HasValue ? t.Seperator.Value.ToString() : "");
}
txt.AppendFormat("<span class=\"term\">{0}</span>", Render(t));
}
return txt.ToString();
}