public override IDerivation Expand(DerivationContext aContext)
{
ListDerivation lList = new ListDerivation(true, aContext);
TextDerivation lText = new TextDerivation(Name); //Symbol.Create(mGrammar, Name, true);
lList.Add(lText);
//add this point to special list for futher replacement
PlaceHolders.Add(Name, lText);
return(lList);
}
private IDerivation GenerateIterativeTopDown()
{
ListDerivation lRootList = new ListDerivation(true, mGrammar.MainSymbol.Context);
lRootList.Add(ExpandNonTerminal(mGrammar.MainSymbol));
ListDerivation lListDer = null;
ListDerivation lNextListDer = lRootList;
MaxListDerLevel = 0;
ListDerivation fixedLevel = null;
while (null != lNextListDer)
{
lListDer = lNextListDer;
lNextListDer = lListDer.ExpandStep();
// fire progress event
if (Progress != null && lNextListDer != null)
{
if (lNextListDer.Level == 2)
{
fixedLevel = lNextListDer;
//MessageBox.Show(fixedLevel.ToString());
}
if (lNextListDer.Level > MaxListDerLevel)
{
MaxListDerLevel = lNextListDer.Level;
}
//GenerateProgressEventArgs e = new GenerateProgressEventArgs
// {
// RootText = lRootList.ToString(),
// CurrentListText = lNextListDer.ToString(),
// CurrentListLevel = lNextListDer.Level,
// MaxLevel = MaxListDerLevel,
// CurrentInCurrent = lNextListDer.mCurrentItemIndex
// };
//if (fixedLevel != null)
//{
// e.CurrentInRoot = fixedLevel.mCurrentItemIndex;
// e.TotalInRoot = fixedLevel.mList.Count;
//}
//if (PauseGenerate)
//{
// e.PausedAtList = lNextListDer;
//}
//Progress(this, e);
while (PauseGenerate)
{
Thread.Sleep(100);
}
}
}
return(lListDer);
}
private IDerivation ExpandInternal(int aMin, int aMax, DerivationContext aContext)
{
ListDerivation lList = new ListDerivation(true, aContext);
int rest = 0;
if (aMax != int.MaxValue)
{
rest = mRnd.Next(aMax - aMin + 1);
}
for (int i = 0; i < aMin + rest; i++)
{
lList.Add(Phrase.Expand(aContext));
}
//есил 5..* генерим, пока не выпадет орел :)
if (aMax == int.MaxValue)
{
while (mRnd.Next(2) >= 1)
{
lList.Add(Phrase.Expand(aContext));
}
}
return(lList);
}
private ListDerivation GenerateIterativeLeftRight(DerivationContext aLContext)
{
ListDerivation lCurDerivationList = new ListDerivation(true, aLContext);
//начало - генерируем первый вывод в цепочке вывода
lCurDerivationList.Add(mGrammar.MainSymbol.Accept(aLContext));
bool lDeriving = true;
while (lDeriving)
{
lDeriving = false;
//log
//TLog.Write("===>" + lCurDerivationList);
// fire progress event
if (Progress != null && lCurDerivationList != null)
{
GenerateProgressEventArgs e = new GenerateProgressEventArgs
{
RootText = lCurDerivationList.ToString(),
};
Progress(this, e);
}
//создаем новый список и переписываем в него lCurDerivationList раскрывая нетерминалы
ListDerivation lNewDerivationList = new ListDerivation(true, aLContext);
//Просматриваем список на предмет нетерминалов и раскрываем их
for (int i = 0; i < lCurDerivationList.mList.Count; i++)
{
SymbolDerivation lNonTermSym = lCurDerivationList[i] as SymbolDerivation;
if (null != lNonTermSym)
{
//раскрываем нетерминал
lDeriving = true;
IDerivation lDer = ExpandNonTerminal(lNonTermSym.Symbol);
//вставить результат в новый список
if (lDer is ListDerivation)
{
ListDerivation list = (ListDerivation)lDer;
foreach (IDerivation ddd in list.mList)
{
lNewDerivationList.Add(ddd);
}
}
else
{
lNewDerivationList.Add(lDer);
}
}
else
{
//скопировать терминал в новый список
lNewDerivationList.Add(lCurDerivationList[i]);
}
//SpecGraphBuilder.RootObject = lNewDerivationList;
//Thread.Sleep(500);
}
lCurDerivationList = lNewDerivationList;
}
if (Grammar.SpecGraphBuilder != null)
{
Grammar.SpecGraphBuilder.RootObject = lCurDerivationList;
}
return(lCurDerivationList);
}
public IDerivation AddEnd(IDerivation aValue)
{
TargetList.Add(aValue);
return(aValue);
}
