/// <summary>
/// Gets the arguments and mapped parameters from the given node.
/// </summary>
/// <param name="block">The target block.</param>
/// <param name="context">The render context.</param>
/// <returns>The set of arguments and mapped parameters.</returns>
protected virtual Tuple <object[], Dictionary <string, object> > GetArgumentsAndMappedParameters(Block block, RenderContext context)
{
var arguments = new List <object>();
var maps = new Dictionary <string, object>();
var items = block.Children.OfType <Span>().Where(c => c.Kind == SpanKind.Parameter || c.Kind == SpanKind.Map);
foreach (var span in items)
{
if (span.Kind == SpanKind.Parameter)
{
arguments.Add(context.ResolveValue(span));
}
else
{
var symbols = span.Symbols.Cast <HandlebarsSymbol>().ToList();
string key = symbols[0].Content;
object value = context.ResolveValue(span);
if (maps.ContainsKey(key))
{
maps[key] = value;
}
else
{
maps.Add(key, value);
}
}
}
return(Tuple.Create(arguments.ToArray(), maps));
}
/// <inheritdoc />
protected override void Render(Block block, object[] arguments, Dictionary <string, object> maps, RenderContext context, TextWriter writer)
{
string name = block.Name;
var children = block.Children.ToList();
// Get the TagElement block.
var tagElement = (Block)children[0];
// Determine if the block prefix symbol (either # or ^) is a caret.
bool isNegatedSection = tagElement.Children.Cast <Span>().Where(s => s.Kind == SpanKind.MetaCode).ToArray()[1].Content == "^";
children.RemoveAt(0);
children.RemoveAt(children.Count - 1);
if (string.IsNullOrEmpty(name))
{
// Nothing we can do.
return;
}
object value = context.ResolveValue(name, false);
if (value == null && !isNegatedSection)
{
// No value, nothing we can do :-(
return;
}
if ((value is IEnumerable) && !(value is string) && !isNegatedSection)
{
RenderEnumerable((IEnumerable)value, context, children, null);
}
else
{
bool isTruthy = IsTruthy(value);
// Treat this as a conditional block.
if (isTruthy != isNegatedSection)
{
if (isTruthy)
{
// Create a scope around the value.
using (var scope = context.BeginScope(value))
{
RenderChildren(children, context);
}
}
else
{
RenderChildren(children, context);
}
}
}
}
/// <inheritdoc />
protected override void Render(Block block, object[] arguments, Dictionary<string, object> maps, RenderContext context, TextWriter writer)
{
string name = block.Name;
var children = block.Children.ToList();
// Get the TagElement block.
var tagElement = (Block)children[0];
// Determine if the block prefix symbol (either # or ^) is a caret.
bool isNegatedSection = tagElement.Children.Cast<Span>().Where(s => s.Kind == SpanKind.MetaCode).ToArray()[1].Content == "^";
children.RemoveAt(0);
children.RemoveAt(children.Count - 1);
if (string.IsNullOrEmpty(name))
{
// Nothing we can do.
return;
}
object value = context.ResolveValue(name, false);
if (value == null && !isNegatedSection)
{
// No value, nothing we can do :-(
return;
}
if ((value is IEnumerable) && !(value is string) && !isNegatedSection)
{
RenderEnumerable((IEnumerable)value, context, children, null);
}
else
{
bool isTruthy = IsTruthy(value);
// Treat this as a conditional block.
if (isTruthy != isNegatedSection)
{
if (isTruthy)
{
// Create a scope around the value.
using (var scope = context.BeginScope(value))
{
RenderChildren(children, context);
}
}
else
{
RenderChildren(children, context);
}
}
}
}
/// <inheritdoc />
public override void Render(Span target, RenderContext context, TextWriter writer)
{
object value = context.ResolveValue(target);
Write(context, writer, value);
}
/// <inheritdoc />
public override void Render(Span target, RenderContext context, TextWriter writer)
{
object value = context.ResolveValue(target);
Write(context, writer, value);
}
