/* Check the a register can be added to the chart */
private bool InputValidation(RegisterEntry entry)
{
if (entry.GetName()[0] >= '0' && entry.GetName()[0] <= '9')
{
MessageBox.Show("Register name can't begin with a digit");
return(false);
}
if (entry.GetRegType() != RegisterEntry.type_field.FIELD)
{
int index = -1;
for (int i = 0; i < RegList.Count; i++)
{
if (RegList[i].GetName().Equals(entry.GetName()))
{
index = i;
}
}
if (index != -1)
{
MessageBox.Show("Register " + entry.GetName() + " (" + RegList[index].GetAddress() + ") is already in the list");
return(false);
}
int addr = FindAddress();
if (addr == -1)
{
MessageBox.Show("Unable to add register " + entry.GetName() + ", no free slot in memory");
return(false);
}
entry.SetAddress(addr);
}
else
{
if (RegList.Count == 0)
{
MessageBox.Show("There are no registers in the list");
return(false);
}
int addr = -1, index = -1;
RegisterEntry item;
using (ChooseAddressPrompt prompt = new ChooseAddressPrompt(RegList.ToArray()))
{
if (prompt.ShowDialog() == DialogResult.OK)
{
addr = prompt.Chosen_address;
index = prompt.Index;
item = RegList[prompt.Index];
}
else
{
return(false);
}
}
List <RegisterEntry> fields = item.GetFields();
foreach (RegisterEntry field in fields)
{
if (field.GetName().Equals(entry.GetName()))
{
MessageBox.Show("Field " + entry.GetName() + " (" + item.GetAddress() + ") is already in the list of " + item.GetName());
return(false);
}
}
entry.SetAddress(addr);
entry.SetIndex(index);
}
if (!entry.IsValidLsbMsb())
{
MessageBox.Show("Can't insert register " + entry.GetName() + " with LSB greater than MSB");
return(false);
}
return(true);
}
