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);
}
}
}
private static void IterateObject(BindingContext context,
ObjectDescriptor descriptor,
ChainSegment[] blockParamsVariables,
object target,
IEnumerable properties,
Type targetType,
Action <BindingContext, TextWriter, object> template,
Action <BindingContext, TextWriter, object> ifEmpty)
{
using var innerContext = context.CreateChildContext();
var iterator = new ObjectIteratorValues(innerContext);
var blockParams = new BlockParamsValues(innerContext, blockParamsVariables);
blockParams.CreateProperty(0, out var _0);
blockParams.CreateProperty(1, out var _1);
var accessor = new MemberAccessor(target, descriptor);
var enumerable = new ExtendedEnumerator <object>(properties.GetEnumerator());
var enumerated = false;
object iteratorValue;
ChainSegment iteratorKey;
while (enumerable.MoveNext())
{
enumerated = true;
var enumerableValue = enumerable.Current;
iteratorKey = ChainSegment.Create(enumerableValue.Value);
iterator.Key = iteratorKey;
iterator.Index = enumerableValue.Index;
if (enumerableValue.Index == 1)
{
iterator.First = BoxedValues.False;
}
if (enumerableValue.IsLast)
{
iterator.Last = BoxedValues.True;
}
iteratorValue = accessor[iteratorKey];
iterator.Value = iteratorValue;
innerContext.Value = iteratorValue;
blockParams[_0] = iteratorValue;
blockParams[_1] = iteratorKey;
template(context, context.TextWriter, innerContext);
}
if (!enumerated)
{
ifEmpty(context, context.TextWriter, context.Value);
}
}
private static void IterateEnumerable(BindingContext context,
ChainSegment[] blockParamsVariables,
IEnumerable target,
Action <BindingContext, TextWriter, object> template,
Action <BindingContext, TextWriter, object> ifEmpty)
{
using var innerContext = context.CreateChildContext();
var iterator = new IteratorValues(innerContext);
var blockParams = new BlockParamsValues(innerContext, blockParamsVariables);
blockParams.CreateProperty(0, out var _0);
blockParams.CreateProperty(1, out var _1);
var enumerator = new ExtendedEnumerator <object>(target.GetEnumerator());
var enumerated = false;
object boxedIndex;
object iteratorValue;
while (enumerator.MoveNext())
{
enumerated = true;
var enumerableValue = enumerator.Current;
if (enumerableValue.Index == 1)
{
iterator.First = BoxedValues.False;
}
if (enumerableValue.IsLast)
{
iterator.Last = BoxedValues.True;
}
boxedIndex = enumerableValue.Index;
iteratorValue = enumerableValue.Value;
iterator.Value = iteratorValue;
iterator.Index = boxedIndex;
blockParams[_0] = iteratorValue;
blockParams[_1] = boxedIndex;
innerContext.Value = iteratorValue;
template(context, context.TextWriter, innerContext);
}
if (!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);
}
}
}
private static void IterateObjectWithStaticProperties(BindingContext context,
ObjectDescriptor descriptor,
BlockParamsValueProvider blockParamsValueProvider,
object target,
IList properties,
Type targetType,
Action <BindingContext, TextWriter, object> template,
Action <BindingContext, TextWriter, object> ifEmpty)
{
using (var iterator = ObjectEnumeratorValueProvider.Create(context.Configuration))
{
blockParamsValueProvider?.Configure(BlockParamsObjectEnumeratorConfiguration, iterator);
var accessor = descriptor.MemberAccessor;
var count = properties.Count;
for (iterator.Index = 0; iterator.Index < count; iterator.Index++)
{
iterator.Key = properties[iterator.Index].ToString();
iterator.Value = accessor.TryGetValue(target, targetType, iterator.Key, out var value) ? value : null;
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);
}
}
}