::
::::  /hook/json/tree
  ::
/?    314
/+    tree
/=    gas    /$    fuel
/=    dat    /^    tree-include
             /:    /===/tree-gen    /%
             /tree-include/
::
/=    kid    /^    (map span tree-include)
             /:    /===/tree-gen    /%  2    /_
             /tree-include/
!:
::::
  ::
|%
++  schema  (dict ,[term $|(mark schema)])
++  dict    |*(a=_,* $&([a (dict a)] a))
++  query
  $%  [%kids p=(list query)]
      [%name %t]
      [%path %t]
      [%sect %j]
      [%snip %r]
      [%head %r]
      [%body %r]
      [%meta %j]
  ==
++  to-queries
  |=  a=schema  ^-  (list query)
  ?@(-.a [(to-query a) ~] [(to-query -.a) $(a +.a)])
::
++  to-query
  |=  a=[term $|(mark schema)]
  ~|  invalid-query/a
  ?+  -.a  ;;(query a)
    %kids  [%kids (to-queries ?@(+.a !! +.a))]
  ==
++  from-type                         ::  XX holding out for noun odors
  |=  a=$%([%t p=cord] [%r p=json] [%j p=json])
  ?-  -.a
    %t  [%s p.a]
    %r  p.a
    %j  p.a
  ==
++  from-queries
  |=  [bem=beam quy=(list query)]
  =<  (jobe (turn quy .))
  |=  a=query
  :-  -.a
  ?-  -.a
    %name  (from-type +.a ?^(s.bem i.s.bem q.bem))
    %path  (from-type +.a (crip (spud (flop s.bem))))
    %head  (from-type +.a head.dat)
    %snip  (from-type +.a snip.dat)
    %sect  (from-type +.a sect.dat)
    %meta  (from-type +.a meta.dat)
    %body  (from-type +.a body.dat)
    %kids  ?<  (~(has by (mo p.a)) %kids)  ::  XX recursion? 
           =<  o/(~(urn by kid) .)
           |=  [dir=span dak=tree-include]
           ^^$(quy p.a, s.bem [dir s.bem], dat dak, kid ~)
  ==
--
!:
::::
  ::
[tree .]
^-  json
=+  ^=  schem
    =+  seh=(fall (~(get by qix.gas) 'q') 'body.r')
    ~|(bad-noun/seh ;;(schema (rash seh read-schem)))
(from-queries bem.gas(s but.gas) (to-queries schem))