public void RhSide(Production p)
{
CSymbol s;
ParserOldAction a = null; // last old action seen
while (m_tok != null)
{
if (m_tok.Matches(";"))
{
break;
}
if (m_tok.Matches("|"))
{
break;
}
if (m_tok.Matches(":"))
{
Advance();
p.m_alias[m_tok.yytext] = p.m_rhs.Count;
Advance();
}
else if (m_tok is PrecReference)
{
if (p.m_rhs.Count == 0)
{
erh.Error(new CSToolsException(21, "%prec cannot be at the start of a right hand side"));
}
PrecReference pr = (PrecReference)m_tok;
CSymbol r = (CSymbol)p.m_rhs[p.m_rhs.Count - 1];
r.m_prec = pr.precref.m_prec;
Advance();
}
else
{
s = (CSymbol)m_tok;
if (s.m_symtype == CSymbol.SymType.oldaction)
{
if (a != null)
{
Error(42, s.pos, "adjacent actions");
}
a = (ParserOldAction)s;
if (a.m_action < 0)
{ // an OldAction that has been converted to a SimpleAction: discard it
s = a.m_sym; // add the SimpleAction instead
s.m_symtype = CSymbol.SymType.simpleaction;
ParserSimpleAction sa = (ParserSimpleAction)s;
}
else // add it to the Actions function
{
m_actions += String.Format("\ncase {0} : {1} break;", a.m_action, a.m_initialisation);
}
a = null;
}
else if (s.m_symtype != CSymbol.SymType.simpleaction)
{
s = ((CSymbol)m_tok).Resolve();
}
p.AddToRhs(s);
Advance();
}
}
Precedence.Check(p);
}
