class BlankSlate
  instance_methods.each { |m| undef_method m unless m =~ /^__/ or m =~ /send/ }
end

class Remold < BlankSlate
  REMOLD_CACHE = ''
  def method_missing meth, *args, &block
    __remold__handle meth, *args, &block
  end

  def p *args, &block
    __remold__handle :p, *args, &block
  end

  def __remold_handle meth, *args, &block
    Kernel.p [:method_missing, meth, args]
    __build_tag__(meth, *args, &block)
  end

  # build a tag for `name`, using `args` and an optional block that
  # will be yielded
  def __build_tag__(name, args=nil, &block)
    Kernel.p [:build_tag, name, args]
    out = "<#{name}"
    if block_given?
      out << ( args ? args.inject(''){ |s,v| s+%{ #{v[0]}="#{v[1]}"} } : '' )
      out << ">#{yield}</#{name}>"
    else
      out << args.inject(''){ |s,v| s+%{ #{v[0]}="#{v[1]}"} } if args
      out << ' />'
    end
    REMOLD_CACHE << out
  end
end

class Template < Remold
  def simple
    p
  end
end

template = Template.new
template.simple