require 'benchmark'
require 'examples/complex_view'

class Handlebar < ComplexView
  def render_sections(template)
    # fail fast
    return template unless template.include?('{{#')

    template.gsub(/\{\{\#([^\}]*)\}\}\s*(.+)\{\{\/\1\}\}\s*/m) do |s|
      ret = find($1)

      if ret.respond_to? :each
        ret.map do |ctx|
          render($2, ctx)
        end.join
      elsif ret
        render($2)
      else
        ''
      end
    end
  end
end

n = 10000
Benchmark.bm(9) do |x|
  x.report('complex') { n.times { ComplexView.to_html } }
  x.report('handlebar') { n.times { Handlebar.to_html } }
end

__END__
               user     system      total        real
complex   18.760000   0.710000  19.470000 ( 26.253526)
handlebar  6.320000   0.520000   6.840000 ( 12.494350)