private static void IterateEnumerable(BindingContext context,
BlockParamsValueProvider blockParamsValueProvider,
IEnumerable target,
Action <BindingContext, TextWriter, object> template,
Action <BindingContext, TextWriter, object> ifEmpty)
{
using (var iterator = IteratorValueProvider.Create())
{
blockParamsValueProvider?.Configure(BlockParamsEnumerableConfiguration, iterator);
iterator.Index = 0;
var enumerable = new ExtendedEnumerable <object>(target);
bool enumerated = false;
foreach (var enumerableValue in enumerable)
{
enumerated = true;
iterator.Value = enumerableValue.Value;
iterator.First = enumerableValue.IsFirst;
iterator.Last = enumerableValue.IsLast;
using (var innerContext = context.CreateChildContext(iterator.Value))
{
innerContext.RegisterValueProvider(iterator);
template(context, context.TextWriter, innerContext);
innerContext.UnregisterValueProvider(iterator);
}
}
if (iterator.Index == 0 && !enumerated)
{
ifEmpty(context, context.TextWriter, context.Value);
}
}
}
private static void IterateList(BindingContext context,
BlockParamsValueProvider blockParamsValueProvider,
IList target,
Action <BindingContext, TextWriter, object> template,
Action <BindingContext, TextWriter, object> ifEmpty)
{
using (var iterator = IteratorValueProvider.Create())
{
blockParamsValueProvider?.Configure(BlockParamsEnumerableConfiguration, iterator);
var count = target.Count;
for (iterator.Index = 0; iterator.Index < count; iterator.Index++)
{
iterator.Value = target[iterator.Index];
iterator.First = iterator.Index == 0;
iterator.Last = iterator.Index == count - 1;
using (var innerContext = context.CreateChildContext(iterator.Value))
{
innerContext.RegisterValueProvider(iterator);
template(context, context.TextWriter, innerContext);
innerContext.UnregisterValueProvider(iterator);
}
}
if (iterator.Index == 0)
{
ifEmpty(context, context.TextWriter, context.Value);
}
}
}