public virtual bool MoveNext()
{
this.CheckValid();
if (this.curSymbol == null)
{
this.curSymbol = this.symbolLoader.GetFirstSymbol(false);
this.nextNavType = AdsGetDynamicSymbolType.Child;
if (this.curSymbol == null)
{
this.isValid = false;
}
return(this.isValid);
}
TcAdsSymbolInfo nextSymbol = null;
if (this.symbolLoader._symbolParser != null)
{
switch (this.nextNavType)
{
case AdsGetDynamicSymbolType.Sibling:
nextSymbol = this.curSymbol.NextSymbol;
break;
case AdsGetDynamicSymbolType.Child:
nextSymbol = this.curSymbol.GetFirstSubSymbol(this._dereference);
break;
case AdsGetDynamicSymbolType.Parent:
this.curSymbol = this.curSymbol.Parent;
nextSymbol = this.curSymbol.NextSymbol;
break;
default:
break;
}
if (nextSymbol != null)
{
AdsGetDynamicSymbolType nextNavType = this.nextNavType;
if ((nextNavType == AdsGetDynamicSymbolType.Sibling) || (nextNavType == AdsGetDynamicSymbolType.Parent))
{
this.nextNavType = AdsGetDynamicSymbolType.Child;
}
}
else
{
switch (this.nextNavType)
{
case AdsGetDynamicSymbolType.Sibling:
case AdsGetDynamicSymbolType.Parent:
this.nextNavType = AdsGetDynamicSymbolType.Parent;
break;
case AdsGetDynamicSymbolType.Child:
this.nextNavType = AdsGetDynamicSymbolType.Sibling;
break;
default:
break;
}
if ((this.nextNavType != AdsGetDynamicSymbolType.Parent) || (this.curSymbol.Parent != null))
{
return(this.MoveNext());
}
}
}
if (nextSymbol == null)
{
this.isValid = false;
}
this.curSymbol = nextSymbol;
return(this.isValid);
}
public AdsSymbolEnumerator(TcAdsSymbolInfoLoader symbolLoader)
{
this.symbolLoader = symbolLoader;
this.isValid = true;
this.nextNavType = AdsGetDynamicSymbolType.Child;
}
