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 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);
}
void WriteDynamicColumns(ParameterExpression itemEx, List <Expression> block, ParameterExpression extraColumnsEx, ParameterExpression columnIndexEx)
{
var get_Item = itemEx.Type.GetMethod("get_Item", BindingFlags.Public | BindingFlags.Instance, null, new[] { _ColumnType }, null);
if (get_Item == null)
{
throw new ArgumentException(_Type.Name + " does not have an indexer of type " + _ColumnType.Name);
}
var member = new LocalMemberInfo(get_Item);
var loop = new List <Expression>();
var tmp = GetTemporary(member);
var value = Expression.Assign(
tmp,
Expression.Call(
itemEx,
get_Item,
Expression.Property(
Expression.ArrayAccess(extraColumnsEx, columnIndexEx),
"Value")));
loop.Add(value);
MemberToTextWriter(loop, member, _Members.Count, value, Expression.NotEqual(columnIndexEx, Expression.Constant(0)));
loop.Add(Expression.PreIncrementAssign(columnIndexEx));
block.Add(
Expression.Assign(
columnIndexEx,
Expression.Constant(0)));
var breakLabel = Expression.Label();
block.Add(
Expression.Loop(
Expression.IfThenElse(
Expression.LessThan(columnIndexEx, Expression.ArrayLength(extraColumnsEx)),
Expression.Block(loop),
Expression.Break(breakLabel)),
breakLabel));
}
public static IFlattener CreateFlattener(Type type)
{
var members = LocalMemberInfo.FindAll(type).ToList();
return(new Flattener(type, members));
}
public static IEnumerable <IMemberInfo> FindAllMembers(Type type)
{
return(LocalMemberInfo.FindAll(type));
}
