public async override Task RenderAsync(Context context, TextWriter result)
{
// Get the template or template content and then either copy it (since it will be modified) or parse it
IFileSystem fileSystem = context.Registers["file_system"] as IFileSystem ?? Template.FileSystem;
ITemplateFileSystem templateFileSystem = fileSystem as ITemplateFileSystem;
Template template = null;
if (templateFileSystem != null)
{
template = await templateFileSystem.GetTemplateAsync(context, _templateName).ConfigureAwait(false);
}
if (template == null)
{
string source = await fileSystem.ReadTemplateFileAsync(context, _templateName).ConfigureAwait(false);
template = Template.Parse(source);
}
List <Block> parentBlocks = FindBlocks(template.Root, null);
List <Block> orphanedBlocks = ((List <Block>)context.Scopes[0]["extends"]) ?? new List <Block>();
BlockRenderState blockState = BlockRenderState.Find(context) ?? new BlockRenderState();
await context.Stack(() =>
{
context["blockstate"] = blockState; // Set or copy the block state down to this scope
context["extends"] = new List <Block>(); // Holds Blocks that were not found in the parent
foreach (Block block in NodeList.OfType <Block>().Concat(orphanedBlocks))
{
Block pb = parentBlocks.Find(b => b.BlockName == block.BlockName);
if (pb != null)
{
if (blockState.Parents.TryGetValue(block, out Block parent))
{
blockState.Parents[pb] = parent;
}
pb.AddParent(blockState.Parents, pb.GetNodeList(blockState));
blockState.NodeLists[pb] = block.GetNodeList(blockState);
}
else if (IsExtending(template))
{
((List <Block>)context.Scopes[0]["extends"]).Add(block);
}
}
return(template.RenderAsync(result, RenderParameters.FromContext(context, result.FormatProvider)));
}).ConfigureAwait(false);
}
public async override Task RenderAsync(Context context, TextWriter result)
{
IFileSystem fileSystem = context.Registers["file_system"] as IFileSystem ?? Template.FileSystem;
ITemplateFileSystem templateFileSystem = fileSystem as ITemplateFileSystem;
Template partial = null;
if (templateFileSystem != null)
{
partial = await templateFileSystem.GetTemplateAsync(context, _templateName).ConfigureAwait(false);
}
if (partial == null)
{
string source = await fileSystem.ReadTemplateFileAsync(context, _templateName).ConfigureAwait(false);
partial = Template.Parse(source);
}
string shortenedTemplateName = _templateName.Substring(1, _templateName.Length - 2);
object variable = context[_variableName ?? shortenedTemplateName, _variableName != null];
await context.Stack(async() =>
{
foreach (var keyValue in _attributes)
{
context[keyValue.Key] = context[keyValue.Value];
}
if (variable is IEnumerable)
{
foreach (var v in ((IEnumerable)variable).Cast <object>().ToList())
{
context[shortenedTemplateName] = v;
await partial.RenderAsync(result, RenderParameters.FromContext(context, result.FormatProvider)).ConfigureAwait(false);
}
return;
}
context[shortenedTemplateName] = variable;
await partial.RenderAsync(result, RenderParameters.FromContext(context, result.FormatProvider)).ConfigureAwait(false);
}).ConfigureAwait(false);
}