public static NonTerminal Create(Grammar aGrammar, IPhrase aParent, string aText)
{
//for terminal we don't return existing object, because it may be modified (terminal)
bool lAllreadyExists = aGrammar.AllNonTerminals.ContainsKey(aText);
NonTerminalCommon common;
if (lAllreadyExists)
{
common = aGrammar.AllNonTerminals[aText];
}
else
{
common = new NonTerminalCommon(aGrammar, aText);
aGrammar.AllNonTerminals.Add(aText, common);
}
NonTerminal lSym = new NonTerminal(common, aParent);
lSym.OccurenceId = common.AllOccurences.Count;
common.AllOccurences.Add(lSym);
return(lSym);
}
public NonTerminal(NonTerminal aSymbol)
{
mCommon = aSymbol.mCommon;
mParent = aSymbol.Parent;
}