/// <summary>
/// Renders a tokens representation if the value (or interpolated value result)
/// 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 the token if the resolved value is not truthy</returns>
public string Render(Writer writer, Context context, IDictionary<string, string> partials, string originalTemplate)
{
var value = context.Lookup(Value);
value = InterpolateLambdaValueIfPossible(value, writer, context, partials);
return !context.IsTruthyValue(value) ? writer.RenderTokens(ChildTokens, context, partials, originalTemplate) : null;
}
/// <summary>
/// Renders a named partial template if one exists with the given context
/// </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 partial template</returns>
public string Render(Writer writer, Context context, IDictionary<string, string> partials, string originalTemplate)
{
var value = partials != null && partials.ContainsKey(Value) ? partials[Value] : null;
if (value == null && context.Registry.PartialTemplateLoader != null)
{
value = context.Registry.PartialTemplateLoader.Load(Value);
}
return value != null ? writer.RenderTokens(writer.Parse(value), context, partials, value) : null;
}
/// <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();
}
