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WebAssembly is a web DSL for Elixir. You create html structure straight using do blocks. Means, you can intermix html-building blocks with full Elixir syntax. DSL output is an iolist, which you can flatten to string, but better use is to just feed it to the socket (via Plug & Cowboy). WebAssem...
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lib/html.ex
defmodule WebAssembly.HTML do
@moduledoc """
HTML5 wrapper macros to be used inside `WebAssembly.Builder`.
"""
defmacro __using__(_opts) do
quote do
import Kernel, except: [div: 2]
import WebAssembly.HTML
end
end
import WebAssembly.DSL
@nonvoid_elements ~w[
head title style script
noscript template
body section nav article aside h1 h2 h3 h4 h5 h6
header footer address main
p pre blockquote ol ul li dl dt dd figure figcaption div
a em strong small s cite q dfn abbr data time code var samp kbd
sub sup i b u mark ruby rt rp bdi bdo span
ins del
iframe object video audio canvas
map svg math
table caption colgroup tbody thead tfoot tr td th
form fieldset legend label button select datalist optgroup
option textarea output progress meter
details summary menuitem menu
]a
# http://www.w3.org/TR/html5/syntax.html#void-elements
@void_elements ~w[
meta link base
area br col embed hr img input keygen param source track wbr
]a
# macros generation
@nonvoid_elements |> Enum.each fn name ->
defmacro unquote(name)(attrs\\[], content) do
e = unquote(name)
quote do: element(unquote(e), unquote(attrs), unquote(content))
end
end
@void_elements |> Enum.each fn name ->
defmacro unquote(name)(attrs\\[]) do
e = unquote(name)
quote do: void_element(unquote(e), unquote(attrs))
end
end
# special cases
defmacro html(attrs\\[], content) do
quote do
value "<!DOCTYPE html>"
element(:html, unquote(attrs), unquote(content))
end
end
defmacro text(content) do
quote do: value("#{unquote(content)}")
end
defmacro p(), do:
quote do: element(:p, [])
# meta helpers
def nonvoid_elements, do: @nonvoid_elements
def void_elements, do: @void_elements
end