internal void InitSpecialRuleRef(Backend backend, ParseElementCollection parent)
{
Rule rule = null;
switch (_type)
{
case SpecialRuleRefType.Null:
parent.AddArc(backend.EpsilonTransition(1f));
break;
case SpecialRuleRefType.Void:
rule = backend.FindRule("VOID");
if (rule == null)
{
rule = backend.CreateRule("VOID", (SPCFGRULEATTRIBUTES)0);
((IElement)rule).PostParse((IElement)parent);
}
parent.AddArc(backend.RuleTransition(rule, parent._rule, 1f));
break;
case SpecialRuleRefType.Garbage:
{
OneOf oneOf = new OneOf(parent._rule, backend);
oneOf.AddArc(backend.RuleTransition(CfgGrammar.SPRULETRANS_WILDCARD, parent._rule, 0.5f));
oneOf.AddArc(backend.EpsilonTransition(0.5f));
((IElement)oneOf).PostParse((IElement)parent);
break;
}
}
}
internal RuleRef(ParseElementCollection parent, Backend backend, Uri uri, List <Rule> undefRules, string semanticKey, string initParameters)
: base(parent._rule)
{
string originalString = uri.OriginalString;
Rule rule = null;
int num = originalString.IndexOf('#');
if (num == 0)
{
rule = GetRuleRef(backend, originalString.Substring(1), undefRules);
}
else
{
StringBuilder stringBuilder = new StringBuilder("URL:");
if (!string.IsNullOrEmpty(initParameters))
{
stringBuilder.Append((num > 0) ? originalString.Substring(0, num) : originalString);
stringBuilder.Append('>');
stringBuilder.Append(initParameters);
if (num > 0)
{
stringBuilder.Append(originalString.Substring(num));
}
}
else
{
stringBuilder.Append(originalString);
}
string text = stringBuilder.ToString();
rule = backend.FindRule(text);
if (rule == null)
{
rule = backend.CreateRule(text, SPCFGRULEATTRIBUTES.SPRAF_Import);
}
}
Arc arc = backend.RuleTransition(rule, _rule, 1f);
if (!string.IsNullOrEmpty(semanticKey))
{
backend.AddPropertyTag(arc, arc, new CfgGrammar.CfgProperty
{
_pszName = "SemanticKey",
_comValue = semanticKey,
_comType = VarEnum.VT_EMPTY
});
}
parent.AddArc(arc);
}