private bool CompareValue(Comparison comparison, Object operand, Object value)
{
if (operand == null)
{
return (comparison.ContainedWithin(Comparison.Null, Comparison.NullOrEmpty) ||
((comparison == Comparison.EqualTo) &&
(value == null)));
}
if (!comparison.IsOperandOnlyComparison())
{
if (value == null)
{
return false;
}
GetComparisonValues(ref operand, ref value);
}
var stringOperand = operand as string;
if (stringOperand != null)
{
var typedValue = Convert.ToString(value);
return CompareString(comparison, stringOperand, typedValue);
}
var comparableOperand = operand as IComparable;
if (comparableOperand != null)
{
var type = comparableOperand.GetType();
var typedValue = (IComparable)Convert.ChangeType(value, type);
return CompareComparable(comparison, comparableOperand, typedValue);
}
return comparison == Comparison.EqualTo && Equals(operand, value);
}