2d(7): From JSON (unit) • Language • docs.urbit.org

`++dejs-soft:format`

Container arm for unitized JSON decoding reparsers

The core inside this arm contains a large collection of functions for converting json data to units of various kinds. The json type is defined in lull.hoon as:

+$  json                    ::  normal json value
  $@  ~                     ::  null
  $%  [%a p=(list json)]    ::  array
      [%b p=?]              ::  boolean
      [%o p=(map @t json)]  ::  object
      [%n p=@ta]            ::  number
      [%s p=@t]             ::  string
  ==                        ::

This container arm doesn't do anything by itself. It just contains the core with the rest of the +dejs-soft functions which are documented below, plus it defines a couple of things for those functions:

=>  |%  ++  grub  (unit *)
        ++  fist  $-(json grub)
    --

A fist is a gate which takes json and produces a grub. Apart from a handful of exceptions, all of the functions below are fists. If the functions below aren't adequate for a particular use case, custom fists can easily be written, as long as they conform to the $-(json grub) type definition.

A grub is just defined as (unit *), and is the type of the product of a fist. In the case of +dejs-soft, it can be any noun in a unit.

Keep in mind that +grub:dejs-soft:format and +fist:dejs-soft:format defined here (and subsequently referred to as simply fist and grub) are different to +grub:dejs:format and +fist:dejs:format for the +dejs functions, which simply return nouns rather than units.

`++ar:dejs-soft:format`

Array as list (in unit)

Convert array jon to a list, decoding each item in jon with wit. The result is wrapped in a unit which is null if the decoding failed.

The +ar function is a wet gate that takes wit and produces a new gate which takes jon.

Accepts

wit is a fist and is the sample of the wet gate.

jon is a json array containing the kind of json that wit handles. jon is the sample of the gate produced by the wet gate.

Produces

A (unit (list [type])) where [type] is the type produced by wit. The unit is null if decoding fails.

Source

++  ar
  |*  wit=fist
  |=  jon=json
  ?.  ?=([%a *] jon)  ~
  %-  zl
  |-
  ?~  p.jon  ~
  [i=(wit i.p.jon) t=$(p.jon t.p.jon)]

Examples

> ((ar so):dejs-soft:format a+~[s+'foo' s+'bar' s+'baz'])
[~ [i='foo' t=<|bar baz|>]]

> ((ar so):dejs-soft:format a+~[n+'123' s+'bar' s+'baz'])
~

`++at:dejs-soft:format`

Array as tuple (in unit)

Convert array jon to a tuple, decoding each item in the array with the corresponding fist in list wil. The result is wrapped in a unit which is null if the decoding failed.

The +at function is a wet gate that takes wil and produces a new gate which takes jon.

Accepts

wil is a (pole fist), and is the sample of the wet gate. A pole is a faceless list.

jon is a json array whose elements are the same kinds of json accepted by the fists in wil and in the same order. jon is the sample of the gate produced by the wet gate.

Produces

A (unit [n]) where [n] is a tuple containing items of the same type and in the same order as those produced by the fists in wil. The unit is null if decoding failed.

Source

++  at
  |*  wil=(pole fist)
  |=  jon=json
  ?.  ?=([%a *] jon)  ~
  ?.  =((lent wil) (lent p.jon))  ~
  =+  raw=((at-raw wil) p.jon)
  ?.((za raw) ~ (some (zp raw)))

Examples

> ((at ~[so ni bo]):dejs-soft:format a+~[s+'foo' n+'123' b+&])
[~ ['foo' 123 %.y]]

> ((at ~[so ni bo]):dejs-soft:format a+~[n+'123' s+'foo' b+&])
~

`++at-raw:dejs-soft:format`

Array as tuple, raw (unitized)

This function is used internally by +at and would not typically be used directly.

+at-raw converts list jol to a new list, decoding each item in the list with the corresponding function in list wil. Each item in the list gets wrapped in a unit, and any item whose decoding fails is null.

The +at-raw function is a wet gate that takes wil and produces a new gate which takes jol.

Accepts

wil is a (pole fist), and the sample of the wet gate. A pole is a faceless list.

jol is a (list json) whose items are the same kinds of json accepted by the fists in wil and in the same order. jol is the sample of the gate produced by the wet gate.

Produces

A list of the types and in the same order as those produced by the fists in wil. Each item is wrapped in a unit and any item whose decoding fails is null.

Source

++  at-raw
  |*  wil=(pole fist)
  |=  jol=(list json)
  ?~  wil  ~
  :-  ?~(jol ~ (-.wil i.jol))
  ((at-raw +.wil) ?~(jol ~ t.jol))

Examples

> ((at-raw ~[so ni bo]):dejs-soft:format ~[s+'foo' n+'123' b+&])
[[~ 'foo'] [~ 123] [~ %.y] ~]

> ((at-raw ~[so ni bo]):dejs-soft:format ~[s+'foo' b+| b+&])
[[~ 'foo'] ~ [~ %.y] ~]

`++bo:dejs-soft:format`

Boolean (in unit)

Convert boolean jon to a ? and wrap the result in a unit. If decoding fails the unit is null.

Accepts

jon is a json boolean.

Produces

A ? wrapped in a unit. The unit is null if the decoding failed.

Source

++  bo
  |=(jon=json ?.(?=([%b *] jon) ~ [~ u=p.jon]))

Examples

> (bo:dejs-soft:format b+|)
[~ %.n]

> (bo:dejs-soft:format n+'123')
~

`++bu:dejs-soft:format`

Boolean NOT (in unit)

Convert the logical NOT of boolean jon to a ?. The result is wrapped in a unit, if the decoding fails the unit is null.

Accepts

jon is a json boolean.

Produces

A (unit ?). The unit is ~ if the decoding failed.

Source

++  bu
  |=(jon=json ?.(?=([%b *] jon) ~ [~ u=!p.jon]))

Examples

> (bu:dejs-soft:format b+&)
[~ %.n]

> (bu:dejs-soft:format n+'123')
~

`++ci:dejs-soft:format`

Maybe transform (in unit)

Decode jon with wit, then transform it with gate poq which produces a unit. If the unit is null or the decoding fails it produces ~, otherwise it produces the unit.

The +ci function is a wet gate that takes a poq and wit and produces a new gate that takes jon.

Accepts

The wet gate takes [poq wit], where poq is a gate that produces a unit and wit is a fist.

jon is json of the kind accepted by wit. jon is the sample of the gate produced by the wet gate.

Produces

Produces (unit [type]), where [type] is the type of the data in the unit produced by poq. The unit is ~ if the decoding failed or if the unit produced by poq is ~.

Source

++  ci
  |*  [poq=gate wit=fist]
  |=  jon=json
  (biff (wit jon) poq)

Examples

> ((ci |=(a=? ?:(=(a &) `'foo' ~)) bo):dejs-soft:format b+&)
[~ 'foo']

> ((ci |=(a=? ?:(=(a &) `'foo' ~)) bo):dejs-soft:format b+|)
~

> ((ci |=(a=? ?:(=(a &) `'foo' ~)) bo):dejs-soft:format n+'123')
~

`++cu:dejs-soft:format`

Transform (in unit)

Decode jon with wit, then transform it with gate poq. The result is wrapped in a unit, which is null if the decoding failed.

The +cu function is a wet gate that takes poq and wit and produces a new gate that takes jon.

Accepts

The wet gate takes [poq wit], where poq is a gate and wit is a fist.

jon is json of the kind handled by wit. jon is the sample of the gate produced by the wet gate.

Produces

(unit [type]), where [type] is the type produced by the gate given in poq. The unit is ~ if the decoding failed.

Source

++  cu
  |*  [poq=gate wit=fist]
  |=  jon=json
  (bind (wit jon) poq)

Examples

> ((cu |=(a=? ?:(=(a &) 'foo' ~)) bo):dejs-soft:format b+&)
[~ 'foo']

> ((cu |=(a=? ?:(=(a &) 'foo' ~)) bo):dejs-soft:format b+|)
[~ ~]

> ((cu |=(a=? ?:(=(a &) 'foo' ~)) bo):dejs-soft:format n+'123')
~

`++da:dejs-soft:format`

UTC date (in unit)

Convert string jon to a @da, parsing it as a UTC date & time string, e.g.'Thu, 09 Sep 2021 05:58:52'. Note the inclusion of a timezone offset like +1200 will pass the parser but will be ignored. The result is wrapped in a unit, which is null if decoding or parsing failed.

Accepts

jon is a json string encoding a UTC date & time string.

Produces

A @da.

Examples

> (da:dejs-soft:format s+'Thu, 09 Sep 2021 05:58:52')
[~ ~2021.9.9..05.58.52]

> (da:dejs-soft:format s+'09 Sep 2021 05:58:52')
[~ ~2021.9.9..05.58.52]

> (da:dejs-soft:format s+'Thu, 09 Sep 2021 05:58:52 +1200')
[~ ~2021.9.9..05.58.52]

> (da:dejs-soft:format s+'gkjeagkja')
~

> (da:dejs-soft:format b+&)
~

`++dank:dejs-soft:format`

Tank (in unit)

Convert jon, a json-encoded tank, to a tank. The result is wrapped in a unit and is null if decoding failed.

Accepts

jon is json.

Produces

A (unit tank). The unit is ~ if decoding failed.

Source

++  dank
  ^-  $-(json (unit tank))
  %+  re  *tank  |.  ~+
  %-  of  :~
    leaf+sa
    palm+(ot style+(ot mid+sa cap+sa open+sa close+sa ~) lines+(ar dank) ~)
    rose+(ot style+(ot mid+sa open+sa close+sa ~) lines+(ar dank) ~)
  ==

Examples

> =js-txt '{"rose":{"lines":[{"leaf":"foo"},{"leaf":"bar"},{"leaf":"baz"}],"style":{"mid":" ","close":"]","open":"["}}}'
> (dank:dejs-soft:format (need (de:json:html js-txt)))
[~ [%rose p=[p=" " q="[" r="]"] q=~[[%leaf p="foo"] [%leaf p="bar"] [%leaf p="baz"]]]]
> ~(ram re (need (dank:dejs-soft:format (need (de:json:html js-txt)))))
"[foo bar baz]"

> (dank:dejs-soft:format (need (de:json:html '{"leaf":"foo"}')))
[~ [%leaf p="foo"]]
> ~(ram re (need (dank:dejs-soft:format (need (de:json:html '{"leaf":"foo"}')))))
"foo"

> (dank:dejs-soft:format n+'123')
~

`++di:dejs-soft:format`

Millisecond date (in unit)

Convert number jon containing milliseconds to a date. The result is wrapped in a unit which is null if decoding failed.

Accepts

jon is a json number.

Produces

A (unit @da). The unit is ~ if decoding failed.

Source

++  di
  (cu from-unix-ms:chrono:userlib ni)

Examples

> =time (time:enjs:format now)
> time
[%n p=~.1631177855330]
> (di:dejs-soft:format time)
[~ ~2021.9.9..08.57.35..547a.e147.ae14.7ae1]

> (di:dejs-soft:format b+&)
~

`++mu:dejs-soft:format`

True unit (in unit)

Decode jon with wit, then wrap it in two units. The inner unit is null if jon was null, the outer unit is null if decoding failed.

The +mu function is a wet gate that takes wit and produces a gate which takes jon.

Accepts

wit is a fist, and is the sample of the wet gate.

jon is json of the kind wit handles. jon is the sample of the gate produced by the wet gate.

Produces

A (unit (unit [type])), where [type] is the type produced by wit. The inner unit is ~ if jon was null, the outer unit is ~ if decoding failed.

Source

++  mu
  |*  wit=fist
  |=  jon=json
  ?~(jon (some ~) (bind (wit jon) some))

Examples

> ((mu so):dejs-soft:format s+'foo')
[~ [~ u='foo']]

> ((mu so):dejs-soft:format ~)
[~ u=~]

> ((mu so):dejs-soft:format b+&)
~

`++ne:dejs-soft:format`

Number as real (in unit)

Convert number jon to a @rd and wrap the result in a unit. The unit is null if decoding failed.

Accepts

jon is a json number.

Produces

A (unit @rd). The unit is ~ if decoding failed.

Source

++  ne
  |=  jon=json
  ^-  (unit @rd)
  ?.  ?=([%n *] jon)  ~
  (rush p.jon (cook ryld (cook royl-cell:^so json-rn)))

Examples

> (ne:dejs-soft:format n+'123')
[~ .~123]

> (ne:dejs-soft:format n+'2.47')
[~ .~2.47]

> (ne:dejs-soft:format b+&)
~

`++ni:dejs-soft:format`

Number as integer (in unit)

Convert number jon to a @ud and wrap it in a unit. If jon is not an integer or if decoding otherwise failed, the unit is null.

Accepts

jon is a json number.

Produces

A (unit @ud). The unit is ~ if jon was not an integer or if decoding otherwise failed.

Source

++  ni
  |=  jon=json
  ?.  ?=([%n *] jon)  ~
  (rush p.jon dem)

Examples

> (ni:dejs-soft:format n+'123')
[~ 123]

> (ni:dejs-soft:format n+'2.47')
~

> (ni:dejs-soft:format b+&)
~

`++no:dejs-soft:format`

Number as knot (in unit)

Convert number jon to a @ta and wrap it in a unit. The result is null if decoding failed.

Accepts

jon is a json number.

Produces

A (unit @ta). The unit is ~ if decoding failed.

Source

++  no
  |=  jon=json
  ?.  ?=([%n *] jon)  ~
  (some p.jon)

Examples

> (no:dejs-soft:format n+'2.47')
[~ ~.2.47]

> (no:dejs-soft:format n+'123')
[~ ~.123]

> (no:dejs-soft:format b+&)
~

`++of:dejs-soft:format`

Object as frond (in unit)

Convert object jon, which contains a single key-value pair, to a key-value tuple using the fist in wer which matches the key. The result is wrapped in a unit which is null if the key couldn't be found in wer or if the decoding failed.

The +of function is a wet gate that takes a list of pairs of keys and fists and produces a new gate that takes json.

Note: While technically the type of an item in the list wer is specified as [cord fist], actually using a cord may result in incorrect type inferrence. Instead, you'll want to format it as a @tas like %foo, so the type system correctly interprets it as a tagged union. If the key contains characters that would be invalid in an ordinary @tas, you can format it like %'foo_bar' - a % then single quotes.

Accepts

wer is a (pole [cord fist]), and is the sample of the wet gate. A pole is a faceless list.

jon is a json object containing a single key. jon is the sample of the gate produced by the wet gate.

Produces

A (unit [@t [type]]) where [type] is the type produced by the matching fist. The unit is ~ if decoding failed or the key could not be found.

Source

++  of
  |*  wer=(pole [cord fist])
  |=  jon=json
  ?.  ?=([%o [@ *] ~ ~] jon)  ~
  |-
  ?~  wer  ~
  ?:  =(-.-.wer p.n.p.jon)
    ((pe -.-.wer +.-.wer) q.n.p.jon)
  ((of +.wer) jon)

Examples

First, let's store some objects containing key-value pairs:

> =obj-1 o+(malt ['foo' s+'hello']~)
> (en:json:html obj-1)
'{"foo":"hello"}'

> =obj-2 o+(malt ~[['bar' a+~[n+'123' n+'456']]])
> (en:json:html obj-2)
'{"bar":[123,456]}'

> =obj-3 o+(malt ['baz' b+&]~)
> (en:json:html obj-3)
'{"baz":true}'

Next, let's construct a +of function and try it on our objects:

> ((of ~[foo+so bar+(ar ni)]):dejs-soft:format obj-1)
[~ [%foo 'hello']]

> ((of ~[foo+so bar+(ar ni)]):dejs-soft:format obj-2)
[~ [%bar [i=123 t=~[456]]]]

> ((of ~[foo+so bar+(ar ni)]):dejs-soft:format obj-3)
~

> ((of ~[foo+so bar+(ar ni)]):dejs-soft:format b+&)
~

`++ot:dejs-soft:format`

Object as tuple (in unit)

Convert object jon to a tuple by decoding each value with the matching fist in wer. Each key in wer must be matched to a key in jon. On the other hand, if there are keys in jon with no corresponding key in wer, they'll simply be ignored. The result is wrapped in a unit which is null if decoding failed.

The +ot function is a wet gate that takes a list of key-fist pairs, and produces a gate which takes json.

Accepts

wer is a (pole [cord fist]), and is the sample of the wet gate. A pole is a faceless list.

jon is a json object, and is the sample of the gate produced by the wet gate.

Produces

A (unit [tuple]) where the type of each item in [tuple] is the product of the corresponding fist in wer. The order of items in the tuple will match the order of items in wer. The unit is ~ if decoding failed.

Source

++  ot
  |*  wer=(pole [cord fist])
  |=  jon=json
  ?.  ?=([%o *] jon)  ~
  =+  raw=((ot-raw wer) p.jon)
  ?.((za raw) ~ (some (zp raw)))

Examples

> %-  (ot ~[foo+so bar+ni]):dejs-soft:format
  o+(malt (limo ~[['bar' n+'123'] ['foo' s+'hello'] ['baz' b+&]]))
[~ ['hello' 123]]

> %-  (ot ~[foo+so bar+ni]):dejs-soft:format
  o+(malt (limo ~[['bar' n+'123'] ['baz' b+&]]))
~

`++ot-raw:dejs-soft:format`

Object as list of units, raw

This function is used internally by +ot and would not typically be used directly.

+ot-raw converts map jom to a list of units by decoding each value with the matching fist in wer, then wrapping them in a unit. Any key in wer which cannot be matched to a key in jon is null in the resulting list. If there are keys in jom with no corresponding key in wer, they'll simply be ignored.

The +ot-raw function is a wet gate that takes a list of key-fist pairs, and produces a gate which takes a map of keys to json.

Accepts

wer is a (pole [cord fist]), and is the sample of the wet gate. A pole is a faceless list.

jom is a (map @t json), and is the sample of the gate produced by the wet gate.

Produces

A (list (unit)), where the type of the data in each unit is the product of the corresponding fist in wer. The order of items in the list will match the order of items in wer. Any keys in wer which couldn't be matched will be ~ in the resulting list.

Source

++  ot-raw
  |*  wer=(pole [cord fist])
  |=  jom=(map @t json)
  ?~  wer  ~
  =+  ten=(~(get by jom) -.-.wer)
  [?~(ten ~ (+.-.wer u.ten)) ((ot-raw +.wer) jom)]

Examples

> %-  (ot-raw ~[foo+so bar+ni]):dejs-soft:format
  (malt (limo ~[['bar' n+'123'] ['foo' s+'hello'] ['baz' b+&]]))
[[~ 'hello'] [~ 123] ~]

> %-  (ot-raw ~[foo+so bar+ni]):dejs-soft:format
  (malt (limo ~[['bar' n+'123'] ['baz' b+&]]))
[~ [~ 123] ~]

`++om:dejs-soft:format`

Object as map (in unit)

Convert object jon to a map, decoding each value with wit. The result is wrapped in a unit which is null if decoding failed.

The +om function is a wet gate that takes wit and produces a gate that takes jon.

Accepts

wit is a fist, and is the sample of the wet gate.

jon is a json object whose values are the kind of json that wit takes. jon is the sample of the gate produced by the wet gate.

Produces

A (unit (map @t [type])), where [type] is the type produced by wit. The unit is ~ if decoding failed.

Source

++  om
  |*  wit=fist
  |=  jon=json
  ?.  ?=([%o *] jon)  ~
  (zm (~(run by p.jon) wit))

Examples

> =jon (need (de:json:html '{"foo":"aaa","bar":"bbb"}'))
> ((om so):dejs-soft:format jon)
[~ {[p='bar' q='bbb'] [p='foo' q='aaa']}]

> ((om so):dejs-soft:format b+&)
~

`++op:dejs-soft:format`

Parse keys of map (in unit)

Convert object jon to a map, parsing each key with fel and decoding each value with wit. The result is wrapped in a unit which is null if decoding or parsing failed.

The +op function is a wet gate that takes fel and wit, and produces a gate that takes jon.

Accepts

The wet gate takes a cell of [fel wil], where fel is a parsing rule and wil is a fist.

jon is a json object, whose keys are parsable by fel and whose values are json of the kind wit takes. jon is the sample of the gate produced by the wet gate.

Produces

A (unit (map [a] [b])) where [a] is the type produced by fel and [b] is the type produced by wit. The unit is ~ if decoding or parsing failed.

Source

++  op
  |*  [fel=rule wit=fist]
  |=  jon=json  ^-  (map _(wonk *fel) _*wit)
  =/  jom  ((om wit) jon)
  %-  malt
  %+  turn  ~(tap by jom)
  |*  [a=cord b=*]
  =>  .(+< [a b]=+<)
  [(rash a fel) b]

Examples

> =jon (need (de:json:html '{"123":"aaa","456":"bbb"}'))
> ((op dem so):dejs-soft:format jon)
[~ u={[p=456 q='bbb'] [p=123 q='aaa']}]

`++pe:dejs-soft:format`

Prefix (in unit)

Decode jon with wit, prefix it with pre, then wrap the result in a unit which is null if decoding failed.

The +pe function is a wet gate that takes pre and wit, and produces a gate that takes jon.

Accepts

The wet gate takes a cell of [pre wit], where pre is any noun and wit is a fist.

jon is json of the kind accepted by wit. jon is the sample of the gate produced by the wet gate.

Produces

A (unit [[a] [b]]), where [a] is the noun given in pre and [b] is the type produced by wit. The unit is ~ if decoding failed.

Source

++  pe
  |*  [pre=* wit=fist]
  (cu |*(* [pre +<]) wit)

Examples

> ((pe %foo so):dejs-soft:format s+'abc')
[~ [%foo 'abc']]

> ((pe %foo so):dejs-soft:format b+&)
~

`++re:dejs-soft:format`

Recursive reparser

This function facilitates recursion in other fists. It is used internally by some functions and would not typically be used directly. jon is decoded by the fist in the trap sef and cast to the type of the noun given in gar. The result is wrapped in a unit which is null if decoding failed.

+re is a wet gate that takes a cell of gar and sef, and produces a gate which takes jon.

Accepts

gar is any noun, its type determines the return type.

sef is a |.(fist).

The wet gate takes [gar sef].

jon is json of the kind handled by the fist in sef, and is the sample of the gate produced by the wet gate.

Produces

A (unit [type]) where [type] is the type of gar.

Source

++  re
  |*  [gar=* sef=_|.(fist)]
  |=  jon=json
  ^-  (unit _gar)
  ((sef) jon)

Examples

The basic format looks like so:

> ((re *@t |.(so)):dejs-soft:format s+'abc')
[~ 'abc']

> ((re *@t |.(so)):dejs-soft:format b+&)
~

For a recursive example, see its usage in the source of +dank.

`++sa:dejs-soft:format`

String as tape (in unit)

Convert jon to a tape and wrap the result in a unit, which is null if the decoding failed.

Accepts

jon is a json string.

Produces

A (unit tape). The unit is ~ if decoding failed.

Source

++  sa
  |=  jon=json
  ?.(?=([%s *] jon) ~ (some (trip p.jon)))

Examples

> (sa:dejs-soft:format s+'foo')
[~ "foo"]

> (sa:dejs-soft:format b+&)
~

`++so:dejs-soft:format`

String as cord (in unit)

Convert jon to a cord and wrap it in a unit. The unit is null if decoding failed.

Accepts

jon is a json string.

Produces

A (unit @t). The unit is ~ if decoding failed.

Source

++  so
  |=  jon=json
  ?.(?=([%s *] jon) ~ (some p.jon))

Examples

> (so:dejs-soft:format s+'foo')
[~ 'foo']

> (so:dejs-soft:format b+&)
~

`++su:dejs-soft:format`

Parse string (in unit)

Convert and parse jon with sab, then wrap the result in a unit. The unit is null if parsing or decoding failed.

The +su function is a wet gate that takes sab, and produces a gate that takes jon.

Accepts

sab is a parsing rule, and is the sample of the wet gate.

jon is a json string, and is the sample of the gate produced by the wet gate.

Produces

A (unit [type]), where [type] is the type produced by sab.

Source

++  su
  |*  sab=rule
  |=  jon=json
  ?.  ?=([%s *] jon)  ~
  (rush p.jon sab)

Examples

> ((su dem):dejs-soft:format s+'123456')
[~ 123.456]

> `(unit @ub)`((su bin):dejs-soft:format s+'00001011101110001101')
[~ 0b1011.1011.1000.1101]

> ((su dem):dejs-soft:format s+'abc')
~

> ((su dem):dejs-soft:format b+&)
~

`++ul:dejs-soft:format`

Null (in unit)

Return [~ ~] if jon is null or else return ~.

Accepts

jon is null json.

Produces

A (unit ~). The unit is ~ if jon is not ~.

Source

++  ul  |=(jon=json ?~(jon (some ~) ~))

Examples

> (ul:dejs-soft:format ~)
[~ ~]

> (ul:dejs-soft:format b+&)
~

`++za:dejs-soft:format`

Full unit pole

Check whether all units in list pod are non-null. This is used internally by some functions and would not typically be used directly.

Accepts

pod is a (pole (unit)). A pole is a faceless list.

Produces

A ?, which is %.n if any of the units in pod are ~, and %.y otherwise.

Source

++  za
  |*  pod=(pole (unit))
  ?~  pod  &
  ?~  -.pod  |
  (za +.pod)

Examples

> (za:dejs-soft:format ~[`1 `2 `3 `4])
%.y

> (za:dejs-soft:format ~)
%.y

> (za:dejs-soft:format ~[`1 `2 ~ `4])
%.n

`++zl:dejs-soft:format`

Collapse unit list

Convert lut, a list of units, to a (unit (list)) by stripping the unit from each item. The resulting unit is null if any of the units in the list are null. This is used internally by some functions, you would not typically use it directly.

Accepts

A (list (unit)).

Produces

A (unit (list)) which is null if any of the units in lut were null.

Source

++  zl
  |*  lut=(list (unit))
  ?.  |-  ^-  ?
      ?~(lut & ?~(i.lut | $(lut t.lut)))
    ~
  %-  some
  |-
  ?~  lut  ~
  [i=u:+.i.lut t=$(lut t.lut)]

Examples

> (zl:dejs-soft:format (limo ~[`1 `2 `3 `4 `5 `6]))
[~ [i=1 t=~[2 3 4 5 6]]]

> (zl:dejs-soft:format (limo ~[`1 `2 ~ `4 `5 `6]))
~

`++zp:dejs-soft:format`

Unit tuple

Convert but, a list of units, to a tuple by stripping the unit from each item. Crashes if any of the units are null. This is used internally by some functions, you would not typically use it directly.

Accepts

but is a (pole (unit)). A pole is a faceless list.

Produces

A tuple containing each unwrapped element from the original list, or crashes if any of the units were null.

Source

++  zp
  |*  but=(pole (unit))
  ?~  but  !!
  ?~  +.but
    u:->.but
  [u:->.but (zp +.but)]

Examples

> (zp:dejs-soft:format ~[`1 `2 `3 `4 `5 `6])
[1 2 3 4 5 6]

> (zp:dejs-soft:format ~[`1 `2 ~ `4 `5 `6])
mull-none
dojo: hoon expression failed

`++zm:dejs-soft:format`

Collapse unit map

Strip units from values in lum, a map of units. Returns null if any of the units are null. This is used internally by some functions, you would not typically use it directly.

Accepts

lum is a (map term (unit))

Produces

A (unit (map term [type])), where [type] is the type the units in lum contained. Produces ~ if any of the units were null.

Source

++  zm
  |*  lum=(map term (unit))
  ?:  (~(rep by lum) |=([[@ a=(unit)] b=_|] |(b ?=(~ a))))
    ~
  (some (~(run by lum) need))

Examples

> (zm:dejs-soft:format (malt ~[['foo' `1] ['bar' `2]]))
[~ {[p='bar' q=2] [p='foo' q=1]}]

> (zm:dejs-soft:format (malt (limo ~[['foo' `1] ['bar' ~]])))
~