/// <summary>
/// Returns the value or if a lambda the result of the lambda (or interpolated value result)
/// </summary>
/// <param name="value">the value to be checked and possibly interpolated</param>
/// <param name="writer">The writer to write the token to</param>
/// <param name="context">The context to discover values from</param>
/// <param name="partials">The partial templates available to the token</param>
/// <returns>The rendered result of the token</returns>
public object InterpolateLambdaValueIfPossible(object value, Writer writer, Context context, IDictionary<string, string> partials)
{
var functionValueDynamic = value as Func<dynamic, object>;
var functionValue = value as Func<object>;
if (functionValueDynamic == null && functionValue == null)
{
return value;
}
object functionResult = functionValueDynamic != null ? functionValueDynamic.Invoke(context.View) : functionValue.Invoke();
var resultString = functionResult.ToString();
return resultString.Contains("{{") ? writer.Render(resultString, context, partials) : resultString;
}
/// <summary>
/// Returns the rendered result of all the child tokens of the section
/// if the token value is truthy
/// </summary>
/// <param name="writer">The writer to write the token to</param>
/// <param name="context">The context to discover values from</param>
/// <param name="partials">The partial templates available to the token</param>
/// <param name="originalTemplate">The original template</param>
/// <returns>The rendered result of all the sections children</returns>
public string Render(Writer writer, Context context, IDictionary<string, string> partials, string originalTemplate)
{
var buffer = new StringBuilder();
var value = context.Lookup(Value);
if (!context.IsTruthyValue(value))
{
return null;
}
if (value is IEnumerable && !EnumerableBlacklist.Any(x => x.IsInstanceOfType(value)))
{
var arrayValue = value as IEnumerable;
foreach (var v in arrayValue)
{
buffer.Append(writer.RenderTokens(ChildTokens, context.Push(v), partials, originalTemplate));
}
}
else if (value is IEnumerator)
{
var enumeratorValue = value as IEnumerator;
while (enumeratorValue.MoveNext())
{
buffer.Append(writer.RenderTokens(ChildTokens, context.Push(enumeratorValue.Current), partials, originalTemplate));
}
}
else if (value is Func<dynamic, string, object> || value is Func<string, object>)
{
var functionDynamicValue = value as Func<dynamic, string, object>;
var functionStringValue = value as Func<string, object>;
var sectionContent = originalTemplate.Slice(End, ParentSectionEnd);
value = functionDynamicValue != null ? functionDynamicValue.Invoke(context.View, sectionContent) : functionStringValue.Invoke(sectionContent);
value = writer.Render(value.ToString(), context, partials, Tags);
if (value != null)
{
buffer.Append(value);
}
}
else if (value is IDictionary || value != null)
{
buffer.Append(writer.RenderTokens(ChildTokens, context.Push(value), partials, originalTemplate));
}
return buffer.ToString();
}
