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<article> <h2>XQuery mode</h2>

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<textarea id="code" name="code">

xquery version &quot;1.0-ml&quot;; (: this is

: a 
  "comment" :)

let $let := &lt;x attr=&quot;value&quot;&gt;&quot;test&quot;&lt;func&gt;function() $var {function()} {$var}&lt;/func&gt;&lt;/x&gt; let $joe:=1 return element element {

attribute attribute { 1 },
element test { &#39;a&#39; }, 
attribute foo { &quot;bar&quot; },
fn:doc()[ foo/@bar eq $let ],
//x }

(: a more 'evil' test :) (: Modified Blakeley example (: with nested comment :) … :) declare private function local:declare() {()}; declare private function local:private() {()}; declare private function local:function() {()}; declare private function local:local() {()}; let $let := &lt;let&gt;let $let := &quot;let&quot;&lt;/let&gt; return element element {

attribute attribute { try { xdmp:version() } catch($e) { xdmp:log($e) } },
attribute fn:doc { &quot;bar&quot; castable as xs:string },
element text { text { &quot;text&quot; } },
fn:doc()[ child::eq/(@bar | attribute::attribute) eq $let ],
//fn:doc

}

xquery version &quot;1.0-ml&quot;;

(: Copyright 2006-2010 Mark Logic Corporation. :)

(:

: Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
: you may not use this file except in compliance with the License.
: You may obtain a copy of the License at
:
:     http://www.apache.org/licenses/LICENSE-2.0
:
: Unless required by applicable law or agreed to in writing, software
: distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
: See the License for the specific language governing permissions and
: limitations under the License.
:)

module namespace json = &quot;marklogic.com/json";; declare default function namespace &quot;www.w3.org/2005/xpath-functions";;

(: Need to backslash escape any double quotes, backslashes, and newlines :) declare function json:escape($s as xs:string) as xs:string {

let $s := replace($s, &quot;\\&quot;, &quot;\\\\&quot;)
let $s := replace($s, &quot;&quot;&quot;&quot;, &quot;\\&quot;&quot;&quot;)
let $s := replace($s, codepoints-to-string((13, 10)), &quot;\\n&quot;)
let $s := replace($s, codepoints-to-string(13), &quot;\\n&quot;)
let $s := replace($s, codepoints-to-string(10), &quot;\\n&quot;)
return $s

};

declare function json:atomize($x as element()) as xs:string {

if (count($x/node()) = 0) then 'null'
else if ($x/@type = &quot;number&quot;) then
  let $castable := $x castable as xs:float or
                   $x castable as xs:double or
                   $x castable as xs:decimal
  return
  if ($castable) then xs:string($x)
  else error(concat(&quot;Not a number: &quot;, xdmp:describe($x)))
else if ($x/@type = &quot;boolean&quot;) then
  let $castable := $x castable as xs:boolean
  return
  if ($castable) then xs:string(xs:boolean($x))
  else error(concat(&quot;Not a boolean: &quot;, xdmp:describe($x)))
else concat('&quot;', json:escape($x), '&quot;')

};

(: Print the thing that comes after the colon :) declare function json:print-value($x as element()) as xs:string {

if (count($x/*) = 0) then
  json:atomize($x)
else if ($x/@quote = &quot;true&quot;) then
  concat('&quot;', json:escape(xdmp:quote($x/node())), '&quot;')
else
  string-join(('{',
    string-join(for $i in $x/* return json:print-name-value($i), &quot;,&quot;),
  '}'), &quot;&quot;)

};

(: Print the name and value both :) declare function json:print-name-value($x as element()) as xs:string? {

let $name := name($x)
let $first-in-array :=
  count($x/preceding-sibling::*[name(.) = $name]) = 0 and
  (count($x/following-sibling::*[name(.) = $name]) &gt; 0 or $x/@array = &quot;true&quot;)
let $later-in-array := count($x/preceding-sibling::*[name(.) = $name]) &gt; 0
return

if ($later-in-array) then
  ()  (: I was handled previously :)
else if ($first-in-array) then
  string-join(('&quot;', json:escape($name), '&quot;:[',
    string-join((for $i in ($x, $x/following-sibling::*[name(.) = $name]) return json:print-value($i)), &quot;,&quot;),
  ']'), &quot;&quot;)
 else
   string-join(('&quot;', json:escape($name), '&quot;:', json:print-value($x)), &quot;&quot;)

};

(:~

Transforms an XML element into a JSON string representation.  See http://json.org.
&lt;p/&gt;
Sample usage:
&lt;pre&gt;
  xquery version &quot;1.0-ml&quot;;
  import module namespace json=&quot;http://marklogic.com/json&quot; at &quot;json.xqy&quot;;
  json:serialize(&amp;lt;foo&amp;gt;&amp;lt;bar&amp;gt;kid&amp;lt;/bar&amp;gt;&amp;lt;/foo&amp;gt;)
&lt;/pre&gt;
Sample transformations:
&lt;pre&gt;
&amp;lt;e/&amp;gt; becomes {&quot;e&quot;:null}
&amp;lt;e&amp;gt;text&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;text&quot;}
&amp;lt;e&amp;gt;quote &quot; escaping&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;quote \&quot; escaping&quot;}
&amp;lt;e&amp;gt;backslash \ escaping&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;backslash \\ escaping&quot;}
&amp;lt;e&amp;gt;&amp;lt;a&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;b&amp;gt;text2&amp;lt;/b&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:&quot;text1&quot;,&quot;b&quot;:&quot;text2&quot;}}
&amp;lt;e&amp;gt;&amp;lt;a&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;a&amp;gt;text2&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:[&quot;text1&quot;,&quot;text2&quot;]}}
&amp;lt;e&amp;gt;&amp;lt;a array=&quot;true&quot;&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:[&quot;text1&quot;]}}
&amp;lt;e&amp;gt;&amp;lt;a type=&quot;boolean&quot;&amp;gt;false&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:false}}
&amp;lt;e&amp;gt;&amp;lt;a type=&quot;number&quot;&amp;gt;123.5&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:123.5}}
&amp;lt;e quote=&quot;true&quot;&amp;gt;&amp;lt;div attrib=&quot;value&quot;/&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;&amp;lt;div attrib=\&quot;value\&quot;/&amp;gt;&quot;}
&lt;/pre&gt;
&lt;p/&gt;
Namespace URIs are ignored.  Namespace prefixes are included in the JSON name.
&lt;p/&gt;
Attributes are ignored, except for the special attribute @array=&quot;true&quot; that
indicates the JSON serialization should write the node, even if single, as an
array, and the attribute @type that can be set to &quot;boolean&quot; or &quot;number&quot; to
dictate the value should be written as that type (unquoted).  There's also
an @quote attribute that when set to true writes the inner content as text
rather than as structured JSON, useful for sending some XHTML over the
wire.
&lt;p/&gt;
Text nodes within mixed content are ignored.

@param $x Element node to convert
@return String holding JSON serialized representation of $x

@author Jason Hunter
@version 1.0.1

Ported to xquery 1.0-ml; double escaped backslashes in json:escape

:) declare function json:serialize($x as element()) as xs:string {

string-join(('{', json:print-name-value($x), '}'), &quot;&quot;)

};

</textarea>

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    var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
      lineNumbers: true,
      matchBrackets: true,
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    });
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  <p><strong>MIME types defined:</strong> <code>application/xquery</code>.</p> 

  <p>Development of the CodeMirror XQuery mode was sponsored by 
    <a href="http://marklogic.com">MarkLogic</a> and developed by 
    <a href="https://twitter.com/mbrevoort">Mike Brevoort</a>.
  </p>

</article>