public override IEnumerable <object> ConvertTokens(IEnumerable <object> sequence)
{
var enumerator = sequence.GetEnumerator();
while (enumerator.MoveNext())
{
var item = (Expression)enumerator.Current;
var context = BlockAccumulatorContext.Create(item, _configuration);
if (context != null)
{
item = UnwrapStatement(item);
yield return(AccumulateBlock(enumerator, context));
}
else
{
yield return(item);
}
}
}
private Expression AccumulateBlock(
IEnumerator <object> enumerator,
BlockAccumulatorContext context)
{
while (enumerator.MoveNext())
{
var item = (Expression)enumerator.Current;
var innerContext = BlockAccumulatorContext.Create(item, _configuration);
if (innerContext != null)
{
context.HandleElement(AccumulateBlock(enumerator, innerContext));
}
else if (context.IsClosingElement(item))
{
return(context.GetAccumulatedBlock());
}
else
{
context.HandleElement(item);
}
}
throw new HandlebarsCompilerException("Reached end of template before block expression was closed");
}