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<h1 class="text-4xl text-center">kdl - Kat's Document Language</h1>
</header>
<section class="kdl-section" id="description">
<p>
kdl is a document language, mostly based on
<a href="https://sdlang.org/">SDLang</a>, with xml-like semantics that looks
like you're invoking a bunch of CLI commands!
</p>
<p>
It's meant to be used both as a serialization format and a configuration
language, and is relatively light on syntax compared to XML.
</p>
<p>kdl is a document language, mostly based on
<a href="https://sdlang.org">SDLang</a>, with xml-like semantics that looks
like you're invoking a bunch of CLI commands!</p>
<p>It's meant to be used both as a serialization format and a configuration
language, and is relatively light on syntax compared to XML.</p>
</section>
<section class="kdl-section" id="design-and-discussion">
<h2>Design and Discussion</h2>
<p>
kdl is still extremely new, and discussion about the format should happen
over on the
<a href="https://github.com/kdoclang/kdl/discussions">discussions</a> page
in the Github repo. Feel free to jump in and give us your 2 cents!
</p>
<h2>Design and Discussion</h2>
<p>kdl is still extremely new, and discussion about the format should happen
over on the
<a href="https://github.com/kdoclang/kdl/discussions">discussions</a> page
in the Github repo. Feel free to jump in and give us your 2 cents!</p>
</section>
<section class="kdl-section" id="design-principles">
<h2>Design Principles</h2>
<ol>
<li>Maintainability</li>
<li>Flexibility</li>
<li>Cognitive simplicity and Learnability</li>
<li>Ease of de/serialization</li>
<li>Ease of implementation</li>
</ol>
<p>
These are the guiding principles behind the design of KDL, in order of
importance. These principles will hopefully be useful in tie-breaking and
otherwise directing specific decisions when it comes down to it. They are
intentionally vague when it comes to specifics, but more concrete
definitions for each one will be settled on as the project matures.
</p>
<h2>Design Principles</h2>
<ol>
<li>Maintainability</li>
<li>Flexibility</li>
<li>Cognitive simplicity and Learnability</li>
<li>Ease of de/serialization</li>
<li>Ease of implementation</li>
</ol>
<p>These are the guiding principles behind the design of KDL, in order of
importance. These principles will hopefully be useful in tie-breaking and
otherwise directing specific decisions when it comes down to it. They are
intentionally vague when it comes to specifics, but more concrete
definitions for each one will be settled on as the project matures.</p>
</section>
<section class="kdl-section" id="overview">
<h2>Overview</h2>
<p>The basic syntax is similar to SDLang:</p>
<pre>
<code>
// This is a node with a single string value
title "Hello, World"
<h2>Overview</h2>
<p>The basic syntax is similar to SDLang:</p>
<pre><code class="language-kdl">// This is a node with a single string value
title &quot;Hello, World&quot;
// Multiple values are supported, too
bookmarks 12 15 188 1234
// Nodes can have properties
author "Alex Monad" email="alex@example.com" active=true
author &quot;Alex Monad&quot; email=&quot;alex@example.com&quot; active=true
// Nodes can be arbitrarily nested
contents {
section "First section" {
paragraph "This is the first paragraph"
paragraph "This is the second paragraph"
section &quot;First section&quot; {
paragraph &quot;This is the first paragraph&quot;
paragraph &quot;This is the second paragraph&quot;
}
}
// Nodes can be separated into multiple lines
title \
"Some title"
&quot;Some title&quot;
// Comment formats:
@ -96,39 +76,34 @@ C style multiline
*/
tag /*foo=true*/ bar=false
</code>
</pre>
<p>But kdl changes a few details:</p>
<pre>
<code>
// Files must be utf8 encoded!
smile "😁"
</code></pre>
<p>But kdl changes a few details:</p>
<pre><code class="language-kdl">// Files must be utf8 encoded!
smile &quot;😁&quot;
// Instead of anonymous nodes, nodes and properties can be wrapped
// in "" for arbitrary node names.
"!@#$@$%Q#$%~@!40" "1.2.3" "!!!!!"=true
// in &quot;&quot; for arbitrary node names.
&quot;!@#$@$%Q#$%~@!40&quot; &quot;1.2.3&quot; &quot;!!!!!&quot;=true
// The following is a legal bare identifier:
foo123~!@#$%^&*.:'|<>/?+ "weeee"
foo123~!@#$%^&amp;*.:'|&lt;&gt;/?+ &quot;weeee&quot;
// kdl specifically allows properties and values to be
// interspersed with each other, much like CLI commands.
foo bar=true "baz" quux=false 1 2 3
foo bar=true &quot;baz&quot; quux=false 1 2 3
// strings can be multiline as-is, without a different syntax.
string "my
string &quot;my
multiline
value"
value&quot;
// raw/unescaped strings use the "r" prefix on string literals and
// raw/unescaped strings use the &quot;r&quot; prefix on string literals and
// otherwise behave the same, including multiline support.
raw r"C:\Users\kdl"
raw r&quot;C:\Users\kdl&quot;
// You can add any number of # after the r and the last " to
// disambiguate literal " characters.
other-raw r#"hello"world"#
// You can add any number of # after the r and the last &quot; to
// disambiguate literal &quot; characters.
other-raw r#&quot;hello&quot;world&quot;#
// There is a single decimal number type, much like JSON's.
num 1.234e-42
@ -143,36 +118,32 @@ my-binary 0b1010_1101
// You can comment out individual nodes with /-. In the case below, everything
// up until the closing `}` becomes commented.
/-mynode "foo" key=1 {
/-mynode &quot;foo&quot; key=1 {
a
b
c
}
// You can apply /- ("slashdash") comments to individual values, properties,
// You can apply /- (&quot;slashdash&quot;) comments to individual values, properties,
// or child blocks, too:
mynode /-"commented" "not commented" /-key="value" /-{
mynode /-&quot;commented&quot; &quot;not commented&quot; /-key=&quot;value&quot; /-{
a
b
}
</code>
</pre>
<p>The following SDLang features are removed altogether:</p>
<ul>
<li>"Anonymous" nodes</li>
<li>Binary data literals</li>
<li>Date/time formats</li>
<li><code>on</code> and <code>off</code> booleans</li>
<li>Backtick strings</li>
<li>Semicolons</li>
<li>Namespaces with <code>:</code></li>
<li>Shell style (<code>#</code>) and Lua style (<code>--</code>) comments</li>
<li>Distinction between 32/64/128-bit numbers. There's just numbers.</li>
</ul>
</code></pre>
<p>The following SDLang features are removed altogether:</p>
<ul>
<li>&quot;Anonymous&quot; nodes</li>
<li>Binary data literals</li>
<li>Date/time formats</li>
<li><code>on</code> and <code>off</code> booleans</li>
<li>Backtick strings</li>
<li>Semicolons</li>
<li>Namespaces with <code>:</code></li>
<li>Shell style (<code>#</code>) and Lua style (<code>--</code>) comments</li>
<li>Distinction between 32/64/128-bit numbers. There's just numbers.</li>
</ul>
</section>
</main>
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.bg-gray-300 {
--tw-bg-opacity: 1;
background-color: rgba(209, 213, 219, var(--tw-bg-opacity));
}
.table {
display: table;
}
.contents {
display: contents;
}
.text-4xl {
font-size: 2.25rem;
line-height: 2.5rem;
}
.py-10 {
padding-top: 2.5rem;
padding-bottom: 2.5rem;
}
* {
--tw-shadow: 0 0 #0000;
}
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--tw-ring-shadow: 0 0 #0000;
}
.text-center {
text-align: center;
}
@-webkit-keyframes spin {
to {
transform: rotate(360deg);