class Tilt::LiquidTemplate

def evaluate(scope, locals, &block)
  locals = locals.inject({}){ |h,(k,v)| h[k.to_s] = v ; h }
  if scope.respond_to?(:to_h)
    scope  = scope.to_h.inject({}){ |h,(k,v)| h[k.to_s] = v ; h }
    locals = scope.merge(locals)
  end
  locals['yield'] = block.nil? ? '' : yield
  locals['content'] = locals['yield']
  @engine.render(locals)
end