private void removeFirstLocationFromList()
{
//remove the first location in list
_FirstLocation = _CurrentLocation.NextLocation;
_FirstLocation.PreviousLocation = null;
_CurrentLocation = _FirstLocation;
}
private void removeOnlyLocationFromList()
{
//if only one location in list remove it.
_FirstLocation = null;
_CurrentLocation = null;
_LastLocation = null;
}
private void removeLastLocationFromList()
{
//remove location from the end of the list
_LastLocation = _CurrentLocation.PreviousLocation;
_LastLocation.NextLocation = null;
_CurrentLocation = _LastLocation;
}
public void Remove(MemoryLocation memLoc)
{
//public wrapper for removing a location
_CurrentLocation = memLoc;
removeCurrentLocation();
renumberMemoryLocations();
}
private void removeCurrentLocationFromList()
{
//remove location from the middle of the list
_CurrentLocation.NextLocation.PreviousLocation = _CurrentLocation.PreviousLocation;
_CurrentLocation.PreviousLocation.NextLocation = _CurrentLocation.NextLocation;
_CurrentLocation = _CurrentLocation.PreviousLocation;
}
private void addLocationToEndOfList(MemoryLocation n)
{
// add location to the end of the list
n.PreviousLocation = _LastLocation;
n.PreviousLocation.NextLocation = n;
_LastLocation = n;
_CurrentLocation = n;
}
public void AddAfter(int index, string wordValue)
{
//add given word after given index in the list.
MemoryLocation newLoc = new MemoryLocation();
newLoc.Word(wordValue);
this.AddAfter(index, newLoc);
}
private void addLocationToListAfterCurrentLocation(MemoryLocation n)
{
// add location to a specified location in the list
n.PreviousLocation = _CurrentLocation;
n.NextLocation = _CurrentLocation.NextLocation;
_CurrentLocation.NextLocation = n;
_CurrentLocation = n;
}
public void Bind(MemoryLocation memLoc)
{
//This is done because the = operator for setting can not be overloaded.
this.NextLocation = memLoc.NextLocation;
this.PreviousLocation = memLoc.PreviousLocation;
this.ID = memLoc.ID;
this.HasError = memLoc.HasError;
this.Word(memLoc.Word());
}
private void addLocationToStartOfList(MemoryLocation n)
{
//add location to the start of the list
if (_CurrentLocation == null)
{
_LastLocation = n;
}
_FirstLocation = n;
_CurrentLocation = n;
}
public void moveToNextLocation()
{
//move along memory locations to next in list from current location
if (_CurrentLocation != null)
{
if (_CurrentLocation.NextLocation != null)
{
_CurrentLocation = _CurrentLocation.NextLocation;
}
}
}
public void moveToPreviousLocation()
{
//move along memory location to previous in list from the current location
if (_CurrentLocation != null)
{
if (_CurrentLocation.PreviousLocation != null)
{
_CurrentLocation = _CurrentLocation.PreviousLocation;
}
}
}
public void Add(MemoryLocation memLoc)
{
//public wrapper for adding a memory location
try
{
this.addLocationToList(memLoc);
}
catch (Exception ex)
{
throw ex;
}
}
public void AddAfter(int index, MemoryLocation memLoc)
{
//add location after a given index in the list
try
{
_CurrentLocation = Locations(index);
this.addLocationToList(memLoc);
}
catch (Exception ex)
{
throw ex;
}
}
public int Count()
{
//returns the count of memory locations
int countInt = 0;
MemoryLocation loc = _FirstLocation;
while (loc != null)
{
countInt += 1;
loc = loc.NextLocation;
}
return(countInt);
}
private void addLocationToLocationList(MemoryLocation curLocation, ref System.Collections.Generic.List <MemoryLocation> alLocations)
{
//Add location to Generic List given
if (curLocation == null)
{
//do nothing
}
else
{
alLocations.Add(curLocation);
addLocationToLocationList(curLocation.NextLocation, ref alLocations);
}
}
public List <MemoryLocation> Locations()
{
//returns all memory locations in order
List <MemoryLocation> retList = new List <MemoryLocation>();
MemoryLocation loc = _FirstLocation;
while (loc != null)
{
retList.Add(loc);
loc = loc.NextLocation;
}
return(retList);
}
private void renumberMemoryLocations()
{
//set the id of each location to proper numbers zero based index.
MemoryLocation memLoc = _FirstLocation;
int memLocCounter = 0;
while (memLoc != null)
{
memLoc.ID = memLocCounter;
memLoc = memLoc.NextLocation;
memLocCounter += 1;
}
//_CurrentLocation = _LastLocation
}
private void addLocationToArrayList(MemoryLocation curLocation, ref ArrayList alLocations)
{
//add locations to array list given
if (curLocation == null)
{
//do nothing
}
else
{
string s = "";
s += curLocation.Word().WordString;
alLocations.Add(s);
addLocationToArrayList(curLocation.NextLocation, ref alLocations);
}
}
public int addInstuction(MemoryLocation myLoc, int programID)
{
//build connection
SqlConnection conn = new SqlConnection(editonlyConnection);
//build new command
SqlCommand comm = new SqlCommand();
//set command properties
// ERROR: Not supported in C#: WithStatement
int retInt;
//open the connection to the database
conn.Open();
//executes the command that does not return a record set
retInt = comm.ExecuteNonQuery();
//close the connection to the database
conn.Close();
return(retInt);
}
private void addLocationToList(MemoryLocation n)
{
//add memory location to list
if (_FirstLocation == null)
{
addLocationToStartOfList(n);
}
else
{
if (_CurrentLocation.NextLocation != null)
{
addLocationToListAfterCurrentLocation(n);
}
else
{
addLocationToEndOfList(n);
}
}
renumberMemoryLocations();
}
public int Add(string wordValue)
{
//public wrappper for adding a word value
MemoryLocation newLoc = new MemoryLocation();
int result;
try
{
newLoc.Word(wordValue);
result = 1;
}
catch
{
newLoc.Word("0000");
newLoc.HasError = true;
result = -1;
}
this.Add(newLoc);
return(result);
}
//Private Sub advancePointer()
// _Pointer.Advance()
//End Sub
private void goToBranch(MemoryLocation storLoc)
{
//moves pointer to the new memory location
_Pointer.Bind(storLoc);
needToAdvancePointer = false;
}