/// <inheritdoc />
public override async Task <IEnumerable <DocumentItemExecution> > Render(IByteCounterStream outputStream, ContextObject context, ScopeData scopeData)
{
var index = 0;
while (ContinueBuilding(outputStream, context))
{
var collectionContext = new ContextCollection(index++, false, context.Options, context.Key, context.Parent)
{
Value = context.Value
};
//TODO get a way how to execute this on the caller
await MorestachioDocument.ProcessItemsAndChildren(Children, outputStream, collectionContext, scopeData);
if (!await(await MorestachioExpression.GetValue(collectionContext, scopeData)).Exists())
{
break;
}
}
return(new DocumentItemExecution[0]);
}
/// <summary>
/// Compiles all <see cref="IDocumentItem"/> and their children. If the <see cref="IDocumentItem"/> supports the <see cref="ISupportCustomAsyncCompilation"/> it is used otherwise
/// the items <see cref="IDocumentItem.Render"/> method is wrapped
/// </summary>
/// <param name="documentItems"></param>
/// <returns></returns>
public CompilationAsync CompileItemsAndChildren(IEnumerable <IDocumentItem> documentItems)
{
var docs = documentItems.ToArray();
var actions = new Delegate[docs.Length];
for (var index = 0; index < docs.Length; index++)
{
var documentItem = docs[index];
var document = documentItem;
if (document is ISupportCustomAsyncCompilation customAsyncCompilation)
{
actions[index] = (customAsyncCompilation.Compile(this));
}
else if (document is ISupportCustomCompilation customCompilation)
{
actions[index] = (customCompilation.Compile(this));
}
else
{
actions[index] = new CompilationAsync((async(outputStream,
context,
scopeData) =>
{
var children = await document.Render(outputStream, context, scopeData);
foreach (var documentItemExecution in children)
{
await MorestachioDocument.ProcessItemsAndChildren(new[]
{
documentItemExecution.DocumentItem
}, outputStream, documentItemExecution.ContextObject, scopeData);
}
}));
}
}
return(async(stream, context, data) =>
{
if (!data.IsOutputLimited)
{
for (int i = 0; i < docs.Length; i++)
{
var action = actions[i];
if (action is CompilationAsync ca)
{
await ca(stream, context, data);
}
else if (action is Compilation c)
{
c(stream, context, data);
}
}
}
else
{
for (int i = 0; i < docs.Length; i++)
{
if (!DocumentItemBase.ContinueBuilding(stream, data))
{
return;
}
var action = actions[i];
if (action is CompilationAsync ca)
{
await ca(stream, context, data);
}
else if (action is Compilation c)
{
c(stream, context, data);
}
}
}
});
}
