/// <summary>
/// Provides the states used in an expression
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public static List <State> GetStates(Expression expression)
{
List <State> retval = new List <State>();
if (expression != null)
{
foreach (IValue value in expression.GetLiterals())
{
State state = value as State;
if (state != null)
{
retval.Add(state);
}
}
Call call = expression as Call;
if (call != null)
{
Function function = call.Called.GetStaticCallable() as Function;
if (function != null)
{
foreach (IValue value in function.GetLiterals())
{
State state = value as State;
if (state != null)
{
retval.Add(state);
}
}
}
}
}
return(retval);
}
