public void Add(string strExp)
{
if (string.IsNullOrWhiteSpace(strExp))
throw new ArgumentNullException("strExp");
string[] exps = strExp.Split(new[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
while (expressions.Count + exps.Length > countOfExps)
expressions.RemoveAt(0);
foreach (var s in exps)
{
ILogicExpression exp = parser.Parse(s);
LogicWorkspaceItem item = new LogicWorkspaceItem(s, exp);
if (exp is Assign)
{
Assign assign = exp as Assign;
assign.Calculate(parameters);
item.Answer = string.Format(Resource.AssignVariable, assign.Variable, assign.Value);
}
else if (exp is Undefine)
{
Undefine undef = exp as Undefine;
undef.Calculate(parameters);
item.Answer = string.Format(Resource.UndefineVariable, undef.Variable);
}
else
{
item.Answer = exp.Calculate(parameters).ToString();
}
expressions.Add(item);
}
}
public LogicWorkspaceItemViewModel(int index, LogicWorkspaceItem item)
{
this.index = index;
this.item = item;
}
public void Remove(LogicWorkspaceItem item)
{
expressions.Remove(item);
}
