class Temple::HTML::Pretty

def indent
  "\n" + (options[:indent] || '') * @indent
end

def initialize(opts = {})
  super
  @last = nil
  @indent = 0
end

def on_dynamic(content)
  @last = nil
  [:dynamic, options[:pretty] && !@preformatted ? %{(#{content}).to_s.gsub("\n", #{indent.inspect})} : content]
end

def on_html_comment(content)
  return super if !options[:pretty]
  [:multi, [:static, indent], super]
end

def on_html_doctype(type)
  @last = 'doctype'
  super
end

def on_html_tag(name, attrs, closed, content)
  return super if !options[:pretty] || @preformatted
  closed ||= options[:autoclose].include?(name)
  raise "Closed tag #{name} has content" if closed && !empty_exp?(content)
  result = [:multi, [:static, "#{tag_indent(name)}<#{name}"], compile!(attrs)]
  result << [:static, ' /'] if closed && xhtml?
  result << [:static, '>']
  @last = name
  @preformatted = options[:pre_tags].include?(name)
  @indent += 1
  result << compile!(content)
  @indent -= 1
  result << [:static, "#{tag_indent(name)}</#{name}>"] if !closed
  @last = name
  @preformatted = false
  result
end

def on_static(content)
  @last = nil
  [:static, options[:pretty] && !@preformatted ? content.gsub("\n", indent) : content]
end

def tag_indent(name)
  @last && (options[:indent_tags].include?(@last) || options[:indent_tags].include?(name)) ? indent : ''
end