public RegisterRef?ResolveRegisterRef(string text, bool canBeEmpty)
{
if (string.IsNullOrWhiteSpace(text))
{
if (canBeEmpty)
{
return(null);
}
throw new Exception("Empty value");
}
string regex = @"^\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*\[\s*([1-9][0-9]*|[0-9])\s*\]\s*$";
Match match = Regex.Match(text, regex);
if (!match.Success)
{
throw new Exception("Invalid format. Please use the form: <registerName>[<index>]");
}
string regName = match.Groups[1].Value;
string offsetString = match.Groups[2].Value;
Register reg = _comp.FindRegister(regName);
if (reg == null)
{
throw new Exception("No such register: " + regName);
}
int offset;
if (!int.TryParse(offsetString, out offset))
{
throw new Exception("The index is not integer. Please use the form: <registerName>[<index>]");
}
if (offset < 0)
{
StringBuilder sb = new StringBuilder("Cannot reference to ");
sb.Append(text);
throw new Exception(sb.ToString());
}
if (offset >= reg.Width)
{
StringBuilder sb = new StringBuilder("Cannot reference to ");
sb.Append(text);
sb.Append(" - the register has only ").Append(reg.Width)
.Append(" qubits, numbered from 0 to ").Append(reg.Width - 1);
throw new Exception(sb.ToString());
}
RegisterRef toReturn = new RegisterRef()
{
Register = reg,
Offset = offset
};
return(toReturn);
}
public RegisterRef? ResolveRegisterRef(string text, bool canBeEmpty)
{
if (string.IsNullOrWhiteSpace(text))
{
if (canBeEmpty)
{
return null;
}
throw new Exception("Empty value");
}
string regex = @"^\s*([a-zA-Z_][a-zA-Z0-9_]*)\s*\[\s*([1-9][0-9]*|[0-9])\s*\]\s*$";
Match match = Regex.Match(text, regex);
if (!match.Success)
{
throw new Exception("Invalid format. Please use the form: <registerName>[<index>]");
}
string regName = match.Groups[1].Value;
string offsetString = match.Groups[2].Value;
Register reg = _comp.FindRegister(regName);
if (reg == null)
{
throw new Exception("No such register: " + regName);
}
int offset;
if (!int.TryParse(offsetString, out offset))
{
throw new Exception("The index is not integer. Please use the form: <registerName>[<index>]");
}
if (offset < 0)
{
StringBuilder sb = new StringBuilder("Cannot reference to ");
sb.Append(text);
throw new Exception(sb.ToString());
}
if (offset >= reg.Width)
{
StringBuilder sb = new StringBuilder("Cannot reference to ");
sb.Append(text);
sb.Append(" - the register has only ").Append(reg.Width)
.Append(" qubits, numbered from 0 to ").Append(reg.Width - 1);
throw new Exception(sb.ToString());
}
RegisterRef toReturn = new RegisterRef()
{
Register = reg,
Offset = offset
};
return toReturn;
}