return;
ParseTreeRule localParseTreeRule1 = new ParseTreeRule(paramString);
if (this.currentParseTreeRoot.size() > 0)
{
ParseTreeRule localParseTreeRule2 = (ParseTreeRule)this.currentParseTreeRoot.peek();
localParseTreeRule2.addChild(localParseTreeRule1);
}
this.currentParseTreeRoot.push(localParseTreeRule1);
this.numberOfDerivationSteps += 1;
}