public bool IsEqual(Rule nr)
{
if (!Left.Equals(nr.Left) || (Right.Count != nr.Right.Count)) return false;
bool eq = true;
for (int i = 0; i < Right.Count; i++)
if (!Right[i].Equals(nr.Right[i])) { eq = false; break; }
return eq;
}
public void LoadRule(Grammar g, String s)
{
if (!s.Contains("->")) return;
String left = s.Substring(0, s.IndexOf("->"));
String right = s.Substring(s.IndexOf("->") + 2, s.Length - s.IndexOf("->") - 2);
String action = String.Empty;
if (s.Contains('`')) action = s.Substring(s.IndexOf('`') + 1);
List<Int32> p = new List<int>();
foreach (var param in action.Split('{'))
if (param.Contains('}')) p.Add(Int32.Parse(param.Substring(0, param.IndexOf('}'))));
if (action.Contains('{')) action = action.Substring(0, action.IndexOf('{'));
var terms = left.Split(new char[] { '[' }, StringSplitOptions.RemoveEmptyEntries);
String lft = String.Empty;
if (terms.Count() > 0 && terms[0].Contains("]"))
{
lft = terms[0].Substring(0, terms[0].IndexOf(']'));
g.NonTerminals.Add(lft);
}
var rls = right.Split(new char[] { '|' }, StringSplitOptions.RemoveEmptyEntries);
foreach (String rule in rls)
{
Rule r = new Rule(lft);
r.Action = action;
r.Params = p;
foreach (String term in rule.Split(new char[] { '[' }, StringSplitOptions.RemoveEmptyEntries))
{
if (term.Contains("]"))
{
var t = term.Substring(0, term.IndexOf(']'));
g.Terminals.Add(t);
r.Right.Add(t);
}
}
g.Rules.Add(r);
}
}
