private void Evaluate(CultureInfo culture)
{
_evaluated = TypeConverter.TryTo(_value, typeof(bool), culture) ??
TypeConverter.TryTo(_value, typeof(decimal), culture) ??
TryParseDateTime(_value, culture) ??
TryParseDate(_value, culture) ??
_value;
}
public string LhsTyped(IModel model)
{
if (!(Lhs is Constant) && (model.Get(Lhs.AsParsable())?.Full ?? false))
{
return(Lhs.AsParsable());
}
return((string)TypeConverter.To(Lhs.Evaluate(model), typeof(string)));
}
public decimal RhsTyped(IModel model)
{
if (Rhs == null)
{
throw ExpressionParseException.MissingExpression("rhs").Decorate(Token);
}
var raw = Rhs.Evaluate(model);
if (raw == null)
{
throw ExpressionParseException.UnexpectedNullValue("rhs").Decorate(Token);
}
return((decimal)TypeConverter.To(raw, ParameterType));
}
protected bool IsEqual(object lhs, object rhs)
{
if (TypeConverter.IsNumeric(lhs) && TypeConverter.IsNumeric(rhs))
{
lhs = (decimal)TypeConverter.To(lhs, typeof(decimal));
rhs = (decimal)TypeConverter.To(rhs, typeof(decimal));
}
if ((TypeConverter.IsEnum(lhs) && rhs is string) ||
(lhs is string && TypeConverter.IsEnum(rhs)))
{
return(Equals(lhs?.ToString(), rhs?.ToString()));
}
return(Equals(lhs, rhs));
}
protected int Compare(IComparable lhs, IComparable rhs)
{
if (lhs == null || rhs == null)
{
return(lhs?.CompareTo(rhs) ?? (-1 * rhs?.CompareTo(lhs) ?? 0));
}
if (TypeConverter.IsNumeric(lhs) && TypeConverter.IsNumeric(rhs))
{
lhs = (decimal)TypeConverter.To(lhs, typeof(decimal));
rhs = (decimal)TypeConverter.To(rhs, typeof(decimal));
}
if (!Equals(lhs.GetType(), rhs.GetType()))
{
throw ComparisionException.UnComparable(lhs.GetType(), rhs.GetType()).Decorate(Token);
}
return(lhs.CompareTo(rhs));
}
public override object Evaluate(IModel model)
{
var parameters = new List <object>();
for (int i = 0; i < _function.Arguments.Length; i++)
{
var arg = _function.Arguments[i];
if (!arg.Params)
{
var node = _nested.Nodes[i];
object value = node.Evaluate(model);
parameters.Add(TypeConverter.To(value, _function.Arguments[i].Type));
}
else
{
for (int pi = i; pi < _nested.Nodes.Count; pi++)
{
var node = _nested.Nodes[pi];
object value = node.Evaluate(model);
parameters.Add(TypeConverter.To(value, _function.Arguments[i].Type));
}
}
}
try
{
return(_function.Evaluate(parameters.ToArray()));
}
catch (ExceptionWithContext EWC)
{
if (EWC.Context == null)
{
throw ExceptionWithContext.MakePartial(EWC).Decorate(Token);
}
else
{
throw EWC;
}
}
catch (Exception e)
{
throw FunctionEvaluationException.EvaluationError(e).Decorate(Token);
}
}
public override object Evaluate(IModel model)
{
var nestedValue = (bool)TypeConverter.To(Nested.Evaluate(model), typeof(bool));
return(!nestedValue);
}
public bool RhsTyped(IModel model)
{
return((bool)TypeConverter.To(Rhs.Evaluate(model), ParameterType));
}
public bool ConditionTyped(IModel model)
{
return((bool)TypeConverter.To(Condition.Evaluate(model), ParameterType));
}
private void Evaluate(CultureInfo culture)
{
_evaluated = TypeConverter.TryTo(_name, typeof(bool), culture) ??
TypeConverter.TryTo(_name, typeof(decimal), culture);
_constant = _evaluated != null;
}