public override DynamicMetaObject FallbackBinaryOperation(DynamicMetaObject target, DynamicMetaObject arg, DynamicMetaObject errorSuggestion)
{
if (target.Value == null || arg.Value == null)
{
return(BinderHelper.NullErrorOnOperation(_name, this.ReturnType, target, arg));
}
try {
if (target.LimitType == arg.LimitType)
{
var type = target.LimitType;
var leftExpr = BinderHelper.Wrap(target.Expression, type);
var rightExpr = BinderHelper.Wrap(arg.Expression, type);
var checkedExpr = OverflowCheckingCalc(leftExpr, rightExpr);
if (checkedExpr != null)
{
var bindings = BinderHelper.GetTypeRestriction(target, arg);
return(new DynamicMetaObject(checkedExpr, bindings));
}
}
Expression expr = Expression.MakeBinary(
this.Operation,
BinderHelper.Wrap(target.Expression, target.LimitType),
BinderHelper.Wrap(arg.Expression, arg.LimitType));
return(new DynamicMetaObject(
BinderHelper.Wrap(expr, this.ReturnType),
BinderHelper.GetTypeRestriction(target, arg)));
}
catch (InvalidOperationException) {
return(DefferentType(target, arg));
}
}