module Preact::Elements
  # https://www.w3.org/TR/html52/fullindex.html#index-elements
  # https://www.w3.org/TR/SVG11/eltindex.html
  SUPPORTED_HTML_AND_SVG_ELEMENTS = %w[
    a abbr address area article aside audio
    b base bdi bdo blockquote body br button
    canvas caption cite code col colgroup
    data datalist dd del details dfn dialog div dl dt
    em embed
    fieldset figcaption figure footer form
    h1 h2 h3 h4 h5 h6 head header hr html
    i iframe img input ins
    kbd
    label legend li link
    main map mark meta meter
    nav noscript
    object ol optgroup option output
    p param picture pre progress
    q
    rp rt rtc ruby
    s samp script section select small source span strong style sub summary sup
    table tbody td template textarea tfoot th thead time title tr track
    u ul
    var video
    wbr
    altGlyph altGlyphDef altGlyphItem animate animateColor animateMotion animateTransform
    circle clipPath color-profile cursor
    defs desc
    ellipse
    feBlend feColorMatrix feComponentTransfer feComposite feConvolveMatrix feDiffuseLighting
    feDisplacementMap feDistantLight feFlood feFuncA feFuncB feFuncG feFuncR feGaussianBlur
    feImage feMerge feMergeNode feMorphology feOffset fePointLight feSpecularLighting
    feSpotLight feTile feTurbulence
    filter font font-face font-face-format font-face-name font-face-src font-face-uri foreignObject
    g glyph glyphRef
    hkern
    image
    line linearGradient
    marker mask metadata missing-glyph mpath
    path pattern polygon polyline
    radialGradient rect
    script set stop style svg switch symbol
    text textPath tref tspan
    use
    view vkern
  ]

  SUPPORTED_HTML_AND_SVG_ELEMENTS.each do |element|
    define_method(element.to_s.underscore.upcase.to_sym) do |props = nil, &block|
      Preact._render_element(element, props, &block)
    end
  end

  def GPE(arg, &block)
    if block_given?
      el = block.call
      return el if el
    end
    Preact.render_buffer.last.pop
  end

  def RPE(el)
    Preact.render_buffer.last.push(el)
    nil
  end
end