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 IterateObject(BindingContext context, ObjectDescriptor descriptor, BlockParamsValueProvider blockParamsValueProvider, object target, IEnumerable <object> properties, Type targetType, Action <BindingContext, TextWriter, object> template, Action <BindingContext, TextWriter, object> ifEmpty) { using (var iterator = ObjectEnumeratorValueProvider.Create(context.Configuration)) { blockParamsValueProvider?.Configure(BlockParamsObjectEnumeratorConfiguration, iterator); iterator.Index = 0; var accessor = descriptor.MemberAccessor; var enumerable = new ExtendedEnumerable <object>(properties); bool enumerated = false; foreach (var enumerableValue in enumerable) { enumerated = true; iterator.Key = enumerableValue.Value.ToString(); var key = iterator.Key.Intern(); iterator.Value = accessor.TryGetValue(target, targetType, key, out var value) ? value : null; iterator.First = enumerableValue.IsFirst; iterator.Last = enumerableValue.IsLast; iterator.Index = enumerableValue.Index; 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); } } }