/// <summary>
/// Enumerates all subexpressions related to this one
/// </summary>
/// <param name="expression"></param>
/// <returns></returns>
public static IEnumerable <Expression> GetOperands(this Expression expression)
{
if (expression is MutableExpression)
{
return(new List <Expression>(((MutableExpression)expression).Operands));
}
return(ExpressionMutatorFactory.GetMutator(expression).Operands);
}
/// <summary>
/// Changes all operands
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expression"></param>
/// <param name="operands"></param>
/// <param name="checkForChanges"></param>
/// <returns>A potentially new expression with new operands</returns>
public static T ChangeOperands <T>(this T expression, IList <Expression> operands, bool checkForChanges)
where T : Expression
{
bool haveOperandsChanged = checkForChanges && HaveOperandsChanged(expression, operands);
if (!haveOperandsChanged)
{
return(expression);
}
var mutableExpression = expression as IMutableExpression;
if (mutableExpression != null)
{
return((T)mutableExpression.Mutate(operands));
}
return((T)ExpressionMutatorFactory.GetMutator(expression).Mutate(operands));
}