protected override Expression VisitBoolishExpression(BoolishExpression bex)
{
var condition = Visit(bex.Condition);
condition = FunctionBuilder.Reduce(condition, _compilationContext);
var @object = ExpressionShortcuts.Arg <object>(condition);
return(ExpressionShortcuts.Call(() => HandlebarsUtils.IsTruthyOrNonEmpty(@object)));
}
public void Execute(IHandlebarsEngine engine, TextWriter output, HandlebarsBlockHelperOptions options,
dynamic context, params object[] arguments)
{
if (arguments.Length != 1)
{
throw new HandlebarsException("{{with}} helper must have exactly one argument");
}
if (HandlebarsUtils.IsTruthyOrNonEmpty(arguments[0]))
{
options.Template(output, arguments[0]);
}
else
{
options.Inverse(output, context);
}
}
private static void With(TextWriter output, HelperOptions options, dynamic context, params object[] arguments)
{
if (arguments.Length != 1)
{
throw new HandlebarsException("{{with}} helper must have exactly one argument");
}
options.BlockParams(WithBlockParamsConfiguration, arguments[0]);
if (HandlebarsUtils.IsTruthyOrNonEmpty(arguments[0]))
{
options.Template(output, arguments[0]);
}
else
{
options.Inverse(output, context);
}
}
private void RegisterIfAndHelper(IHandlebars hbs)
{
hbs.RegisterHelper("ifand", (writer, options, context, arguments) =>
{
bool res = true;
foreach (var arg in arguments)
{
res = res && HandlebarsUtils.IsTruthyOrNonEmpty(arg);
}
if (res)
{
options.Template(writer, (object)context);
}
else
{
options.Inverse(writer, (object)context);
}
});
}
public override void Invoke(TextWriter output, HelperOptions options, object context, params object[] arguments)
{
if (arguments.Length != 1)
{
throw new HandlebarsException("{{with}} helper must have exactly one argument");
}
if (HandlebarsUtils.IsTruthyOrNonEmpty(arguments[0]))
{
using var frame = options.CreateFrame(arguments[0]);
var blockParamsValues = new BlockParamsValues(frame, options.BlockParams);
blockParamsValues.CreateProperty(0, out var _0);
blockParamsValues[_0] = arguments[0];
options.Template(output, frame);
}
else
{
options.Inverse(output, context);
}
}