move extra/ to docs/gen/ and split up

1 files changed, 68 insertions, 0 deletions

diff --git a/docs/gen/dom.moon b/docs/gen/dom.moon
new file mode 100644
index 0000000..7541fbd
--- /dev/null
+++ b/docs/gen/dom.moon
@@ -0,0 +1,68 @@
+-- mmm.dom
+-- see https://mmm.s-ol.nu/meta/mmm.dom/
+
+export opairs
+
+-- ordered table iterator, for stable(r) renderers
+sort = (t, order_fn, only_strings) ->
+  with index = [k for k,v in pairs t when (not only_strings) or 'string' == type k]
+    table.sort index, order_fn
+
+-- ordered next(t)
+onext = (state, key) ->
+  state.i += state.step
+  { :t, :index, :i } = state
+
+  if key = index[i]
+    key, t[key]
+
+-- ordered pairs(t).
+-- order_fn is optional; see table.sort
+opairs = (t, order_fn, only_strings=false) ->
+  state = { :t, i: 0, step: 1, index: sort t, order_fn, only_strings }
+  onext, state, nil
+
+void_tags = { 'area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source', 'track', 'wbr' }
+void_tags = { t,t for t in *void_tags }
+
+element = (element) -> (...) ->
+  children = { ... }
+
+  -- attributes are last arguments but mustn't be a ReactiveVar
+  attributes = children[#children]
+  if 'table' == (type attributes) and not attributes.node
+    table.remove children
+  else
+    attributes = {}
+
+  b = "<#{element}"
+  for k,v in opairs attributes, nil, true
+    if k == 'style' and 'table' == type v
+      tmp = ''
+      for kk, vv in opairs v
+        tmp ..= "#{kk}: #{vv}; "
+      v = tmp
+    b ..= " #{k}=\"#{v}\""
+
+  -- if there is only one argument,
+  -- children can be in attributes table too
+  if #children == 0
+    children = attributes
+
+  for i,v in ipairs children
+    if 'string' != type v
+      print v
+      error "wrong type: #{type v}"
+    children[i] = '' unless v
+
+  if void_tags[element]
+    assert #children == 0, "void tag #{element} cannot have children!"
+    b .. ">"
+  else
+    b ..= ">" ..  table.concat children, ''
+    b ..= "</#{element}>"
+    b
+
+setmetatable {}, __index: (name) =>
+  with val = element name
+    @[name] = val