class Sass::Script::Funcall

def _perform(environment)

Raises:
  • (Sass::SyntaxError) - if the function call raises an ArgumentError

Returns:
  • (Literal) - The SassScript object that is the value of the function call

Parameters:
  • environment (Sass::Environment) -- The environment in which to evaluate the SassScript 
def _perform(environment)
  args = @args.map {|a| a.perform(environment)}
  if fn = environment.function(@name)
    keywords = Sass::Util.map_hash(@keywords) {|k, v| [k, v.perform(environment)]}
    return perform_sass_fn(fn, args, keywords)
  end
  ruby_name = @name.tr('-', '_')
  args = construct_ruby_args(ruby_name, args, environment)
  unless Functions.callable?(ruby_name)
    opts(to_literal(args))
  else
    opts(Functions::EvaluationContext.new(environment.options).send(ruby_name, *args))
  end
rescue ArgumentError => e
  raise e unless e.backtrace.any? {|t| t =~ /:in `(block in )?(#{name}|perform)'$/}
  raise Sass::SyntaxError.new("#{e.message} for `#{name}'")
end