public PredicateBuilder <T> And(Expression <Func <T, bool> > predicate)
{
if (predicate == null)
{
throw new ArgumentNullException(nameof(predicate));
}
predicate = _paramReplacer.VisitAndConvert(predicate, null);
return(And(predicate.Body));
}
public static Expression <Func <T, bool> > And <T>(this Expression <Func <T, bool> > left, Expression <Func <T, bool> > right)
{
var p1 = left.Parameters.First();
var p2 = right.Parameters.First();
if (p1.Name != p2.Name)
{
var replacer = new ParameterReplacerVisitor <Func <T, bool> >(p1);
right = replacer.VisitAndConvert(right);
}
var newBody = Expression.AndAlso(left.Body, right.Body);
return(Expression.Lambda <Func <T, bool> >(newBody, left.Parameters));
}