public AdsErrorCode TryGetSymbol(string symbolPath, bool bLookup, out ITcAdsSymbol symbol)
{
if (string.IsNullOrEmpty(symbolPath))
{
throw new ArgumentOutOfRangeException("name");
}
symbol = null;
SymbolInfoTable table = this;
lock (table)
{
if (bLookup)
{
TcAdsSymbol symbol2 = null;
if (this._symbolTable.TryGetValue(symbolPath, out symbol2))
{
symbol = symbol2;
return(AdsErrorCode.NoError);
}
}
}
AdsErrorCode deviceSymbolNotFound = AdsErrorCode.DeviceSymbolNotFound;
AdsStream stream = new AdsStream(symbolPath.Length + 1);
using (AdsBinaryWriter writer = new AdsBinaryWriter(stream))
{
writer.WritePlcAnsiString(symbolPath, symbolPath.Length + 1);
AdsStream rdDataStream = new AdsStream(0xffff);
int readBytes = 0;
deviceSymbolNotFound = this._adsClient.TryReadWrite(0xf009, 0, rdDataStream, 0, (int)rdDataStream.Length, stream, 0, (int)stream.Length, out readBytes);
if (deviceSymbolNotFound == AdsErrorCode.NoError)
{
using (AdsBinaryReader reader = new AdsBinaryReader(rdDataStream))
{
AdsSymbolEntry symbolEntry = new AdsSymbolEntry(-1L, this._encoding, reader);
bool flag2 = true;
flag2 = StringComparer.OrdinalIgnoreCase.Compare(symbolPath, symbolEntry.name) == 0;
symbol = new TcAdsSymbol(symbolEntry, (TcAdsDataType)this._datatypeTable.ResolveDataType(symbolEntry.type));
SymbolInfoTable table2 = this;
lock (table2)
{
this._symbolTable[symbolPath] = (TcAdsSymbol)symbol;
if (!flag2 && !this._symbolTable.ContainsKey(symbol.Name))
{
this._symbolTable[symbol.Name] = (TcAdsSymbol)symbol;
string message = $"InstancePath Ambiguity '{symbolPath}' and '{symbol.Name}'!";
TwinCAT.Ads.Module.Trace.TraceWarning(message);
}
}
}
}
}
return(deviceSymbolNotFound);
}
private AdsErrorCode updateSymbolHandle(TcAdsSymbol adsSymbol)
{
AdsErrorCode noError = AdsErrorCode.NoError;
if (adsSymbol.IndexGroup != 0xf005L)
{
uint num;
noError = this._adsClient.RawInterface.ReadWrite(0xf003, 0, adsSymbol.Name, false, out num);
if (noError == AdsErrorCode.NoError)
{
adsSymbol.IndexGroup = 0xf005L;
adsSymbol.IndexOffset = num;
}
else if (noError != AdsErrorCode.ClientSyncTimeOut)
{
}
}
return(noError);
}
public object ReadSymbol(string symbolPath, Type managedType, bool bReloadInfo)
{
AdsErrorCode code2;
if (bReloadInfo)
{
this.Cleanup();
}
TcAdsSymbol adsSymbol = (TcAdsSymbol)this.GetSymbol(symbolPath, true);
if (adsSymbol == null)
{
TcAdsDllWrapper.ThrowAdsException(AdsErrorCode.DeviceSymbolNotFound);
}
TcAdsDataType type = (TcAdsDataType)this._datatypeTable.ResolveDataType(adsSymbol.TypeName);
if (type == null)
{
throw new NotSupportedException("Type of symbol not supported");
}
if (adsSymbol.IndexGroup != 0xf005L)
{
AdsErrorCode adsErrorCode = this.updateSymbolHandle(adsSymbol);
if (adsErrorCode == AdsErrorCode.ClientSyncTimeOut)
{
TcAdsDllWrapper.ThrowAdsException(adsErrorCode);
}
}
AdsStream stream = new AdsStream(adsSymbol.Size);
bool flag = true;
AdsBinaryReader reader = new AdsBinaryReader(stream);
int num2 = 0;
goto TR_001C;
TR_000F:
num2++;
TR_001C:
while (true)
{
int num3;
if (!((num2 < 2) & flag))
{
object obj2 = null;
int num = 0;
TcAdsDataType adsType = (TcAdsDataType)type.ResolveType(DataTypeResolveStrategy.AliasReference);
if (adsType.IsEnum)
{
num = this.InitializeEnum(adsType.Name, managedType, adsSymbol.DataTypeId, adsSymbol.Size, reader, 0, out obj2);
return(obj2);
}
if (adsType.IsArray)
{
num = this.InitializeArray(managedType, adsType, reader, 0, -1, out obj2);
return(obj2);
}
if (adsType.IsStruct)
{
num = this.InitializeStruct(adsType.SubItems, managedType, reader, 0, out obj2);
return(obj2);
}
if (adsType.IsPointer)
{
num = this.InitializePointerType(managedType, adsSymbol.DataTypeId, adsSymbol.Size, reader, 0, out obj2);
return(obj2);
}
if (adsType.IsPrimitive)
{
num = this.InitializePrimitiveType(adsType.Name, managedType, adsSymbol.DataTypeId, adsSymbol.Size, reader, 0, out obj2);
return(obj2);
}
if (!adsType.IsPointer)
{
throw new NotSupportedException("Type of symbol not supported");
}
num = this.InitializePointerType(managedType, adsSymbol.DataTypeId, adsSymbol.Size, reader, 0, out obj2);
return(obj2);
}
flag = false;
code2 = this._adsClient.RawInterface.Read((uint)adsSymbol.IndexGroup, (uint)adsSymbol.IndexOffset, 0, (int)stream.Length, stream.GetBuffer(), false, out num3);
if (code2 > AdsErrorCode.DeviceInvalidOffset)
{
if ((code2 != AdsErrorCode.DeviceSymbolNotFound) && (code2 != AdsErrorCode.DeviceSymbolVersionInvalid))
{
break;
}
}
else if (code2 == AdsErrorCode.NoError)
{
goto TR_000F;
}
else if (code2 != AdsErrorCode.DeviceInvalidOffset)
{
break;
}
if (adsSymbol.IndexGroup == 0xf005L)
{
uint num4;
this._adsClient.RawInterface.Write(0xf006, 0, (uint)adsSymbol.IndexOffset, false);
if (this._adsClient.RawInterface.ReadWrite(0xf003, 0, symbolPath, false, out num4) == AdsErrorCode.NoError)
{
adsSymbol.IndexGroup = 0xf005L;
adsSymbol.IndexOffset = num4;
flag = true;
}
}
goto TR_000F;
}
TcAdsDllWrapper.ThrowAdsException(code2);
goto TR_000F;
}
public void WriteSymbol(string name, object value, bool bReloadInfo)
{
AdsErrorCode code2;
if (bReloadInfo)
{
this.Cleanup();
}
TcAdsSymbol adsSymbol = (TcAdsSymbol)this.GetSymbol(name, true);
if (adsSymbol == null)
{
TcAdsDllWrapper.ThrowAdsException(AdsErrorCode.DeviceSymbolNotFound);
}
TcAdsDataType type = (TcAdsDataType)((TcAdsDataType)this._datatypeTable.ResolveDataType(adsSymbol.TypeName)).ResolveType(DataTypeResolveStrategy.AliasReference);
if (type == null)
{
throw new NotSupportedException("Type of symbol not supported");
}
if (adsSymbol.IndexGroup != 0xf005L)
{
AdsErrorCode adsErrorCode = this.updateSymbolHandle(adsSymbol);
if (adsErrorCode == AdsErrorCode.ClientSyncTimeOut)
{
TcAdsDllWrapper.ThrowAdsException(adsErrorCode);
}
}
AdsStream stream = new AdsStream(adsSymbol.Size);
AdsBinaryWriter writer = new AdsBinaryWriter(stream);
if (type.IsEnum)
{
this.WriteEnumValue(adsSymbol.Name, value, type, writer, 0);
}
else if (type.IsArray)
{
this.WriteArray(value, type, writer, 0);
}
else if (type.IsStruct)
{
this.WriteStruct(value, type.SubItems, writer, 0);
}
else if (type.IsPointer)
{
this.WritePointerValue(adsSymbol.Name, value, adsSymbol.DataTypeId, adsSymbol.Size, writer, 0);
}
else
{
if (!type.IsPrimitive)
{
throw new NotSupportedException("Type of symbol not supported");
}
this.WritePrimitiveValue(adsSymbol.Name, value, type.ManagedType, adsSymbol.DataTypeId, adsSymbol.Size, writer, 0);
}
bool flag = true;
int num = 0;
goto TR_000F;
TR_0002:
num++;
TR_000F:
while (true)
{
if (!((num < 2) & flag))
{
return;
}
flag = false;
code2 = this._adsClient.RawInterface.Write((uint)adsSymbol.IndexGroup, (uint)adsSymbol.IndexOffset, 0, (int)stream.Length, stream.GetBuffer(), false);
if (code2 > AdsErrorCode.DeviceInvalidOffset)
{
if ((code2 != AdsErrorCode.DeviceSymbolNotFound) && (code2 != AdsErrorCode.DeviceSymbolVersionInvalid))
{
break;
}
}
else if (code2 == AdsErrorCode.NoError)
{
goto TR_0002;
}
else if (code2 != AdsErrorCode.DeviceInvalidOffset)
{
break;
}
if (adsSymbol.IndexGroup == 0xf005L)
{
uint num2;
this._adsClient.RawInterface.Write(0xf006, 0, (uint)adsSymbol.IndexOffset, false);
if (this._adsClient.RawInterface.ReadWrite(0xf003, 0, name, false, out num2) == AdsErrorCode.NoError)
{
adsSymbol.IndexGroup = 0xf005L;
adsSymbol.IndexOffset = num2;
flag = true;
}
}
goto TR_0002;
}
TcAdsDllWrapper.ThrowAdsException(code2);
goto TR_0002;
}
