protected bool Equals(VariableItem other)
{
return(string.Equals(StatementId, other.StatementId) &&
string.Equals(Name, other.Name) &&
Type == other.Type &&
Equals(Variable, other.Variable));
}
private VariableItem SimplifyExpression(List <string> exp)
{
var cmdList = exp;
for (int i = 0; i < cmdList.Count; i++)
{
if (cmdList[i].Equals("-") || cmdList[i].Equals("+") ||
cmdList[i].Equals("*") || cmdList[i].Equals("/"))
{
var o1 = _variables.GetVariable(cmdList[i - 1]);
var o2 = _variables.GetVariable(cmdList[i + 1]);
VariableItem rez;
switch (cmdList[i])
{
case "+": rez = o1 + o2; break;
case "-": rez = o1 - o2; break;
case "*": rez = o1 * o2; break;
case "/": rez = o1 / o2; break;
default: throw new Exception("MAGIC!");
}
cmdList[i - 1] = "";
cmdList[i + 1] = "";
cmdList[i] = rez.Name;
_variables.Add(rez);
cmdList.RemoveAll(j => j.Length < 1);
}
}
cmdList.RemoveAll(i => i.Length < 1);
for (int i = 0; i < cmdList.Count; i++)
{
if (cmdList[i].Equals(">") || cmdList[i].Equals(">=") ||
cmdList[i].Equals("<") || cmdList[i].Equals("<=") ||
cmdList[i].Equals("==") || cmdList[i].Equals("!="))
{
var o1 = _variables.GetVariable(cmdList[i - 1]);
var o2 = _variables.GetVariable(cmdList[i + 1]);
VariableItem rez;
switch (cmdList[i])
{
case ">": rez = new VariableItem(o1 > o2); break;
case ">=": rez = new VariableItem(o1 >= o2); break;
case "<": rez = new VariableItem(o1 < o2); break;
case "<=": rez = new VariableItem(o1 <= o2); break;
case "==": rez = new VariableItem(o1 == o2); break;
case "!=": rez = new VariableItem(o1 != o2); break;
default: throw new Exception("MAGIC!");
}
cmdList[i - 1] = "";
cmdList[i + 1] = "";
cmdList[i] = rez.Name;
_variables.Add(rez);
cmdList.RemoveAll(j => j.Length < 1);
}
}
cmdList.RemoveAll(i => i.Length < 1);
int y = 0;
while (true)
{
if (!cmdList.Any(i => i.Equals("and", StringComparison.OrdinalIgnoreCase) ||
i.Equals("or", StringComparison.OrdinalIgnoreCase)))
{
break;
}
if (cmdList[y].Equals("and", StringComparison.OrdinalIgnoreCase) ||
cmdList[y].Equals("or", StringComparison.OrdinalIgnoreCase))
{
var o1 = _variables.GetVariable(cmdList[y - 1]);
var o2 = _variables.GetVariable(cmdList[y + 1]);
VariableItem rez;
switch (cmdList[y])
{
case "and":
rez = new VariableItem(o1 & o2);
break;
case "or":
rez = new VariableItem(o1 | o2);
break;
default:
throw new Exception("MAGIC!");
}
cmdList[y - 1] = "";
cmdList[y + 1] = "";
cmdList[y] = rez.Name;
_variables.Add(rez);
cmdList.RemoveAll(j => j.Length < 1);
y = 0;
}
else
{
y++;
}
}
cmdList.RemoveAll(i => i.Length < 1);
if (cmdList.Count == 1)
{
return(_variables.GetVariable(cmdList[0]));
}
else
{
throw new Exception("BUG!");
}
}
public void Add(VariableItem v)
{
_variableList.Add(v.Name, v);
}