public static Expression <Action <IEnumerable, TextWriter> > CreateExpression(Type type, string separator = ",")
{
var members = LocalMemberInfo.FindAll(type).ToList();
var expression = BuildFlattener.CreateWriterExpression(type, members, ',');
return(expression);
}
public static Expression <Action <IEnumerable, TextWriter> > CreateWriterExpression(Type type, IList <IMemberInfo> members, char separator)
{
var builder = new BuildFlattener
{
_Type = type,
_Members = members,
_Separator = separator,
};
return((Expression <Action <IEnumerable, TextWriter> >)builder.CreateWriterDelegate());
}
public Flattener(Type type, IList <IMemberInfo> members)
{
_Type = type;
_Flatten = BuildFlattener.Create(type, members); // BuildFlattener has its own special handling for empty member lists
if (members == null || members.Count == 0)
{
members = new List <IMemberInfo> {
new FakeMemberInfo(type)
};
}
_Members = members;
}
public static Expression <Func <object, IList <object> > > CreateExpression(Type type, IList <IMemberInfo> members)
{
if (IsNullOrEmpty(members))
{
throw new NotSupportedException("Will not build expression for type with no members.");
}
var builder = new BuildFlattener
{
_Type = type,
_Members = members,
};
return(builder.CreateDelegate());
}
public static void Serialize(Type type, TextWriter destination, IEnumerable items)
{
Action <IEnumerable, TextWriter> writer;
lock (_Delegates)
{
if (!_Delegates.TryGetValue(type, out writer))
{
var members = LocalMemberInfo.FindAll(type).ToList();
var expression = BuildFlattener.CreateWriterExpression(type, members, ',');
writer = expression.Compile();
_Delegates.Add(type, writer);
}
}
writer.Invoke(items, destination);
}
public static void Serialize <TItem, TColumn>(TextWriter destination, IEnumerable <TItem> items, KeyValuePair <string, TColumn>[] columns)
{
Action <IEnumerable, Array, TextWriter> writer;
var pair = new TypePair(typeof(TItem), typeof(TColumn));
lock (_Delegates)
{
if (!_DelegatesDynamic.TryGetValue(pair, out writer))
{
var members = LocalMemberInfo.FindAll(typeof(TItem)).ToList();
var expression = BuildFlattener.CreateWriterExpression(typeof(TItem), typeof(TColumn), members, ',');
writer = expression.Compile();
_DelegatesDynamic.Add(pair, writer);
}
}
writer.Invoke(items, columns, destination);
}
