|
|
|
|
@ -239,6 +239,56 @@ on the closest pairs found and selections are not required; use counts to act in
|
|
|
|
|
<li><code>mr([</code> to replace the parens with square brackets</li>
|
|
|
|
|
</ul>
|
|
|
|
|
<p>Multiple characters are currently not supported, but planned.</p>
|
|
|
|
|
<h2 id="syntax-tree-motions"><a class="header" href="#syntax-tree-motions">Syntax-tree Motions</a></h2>
|
|
|
|
|
<p><code>A-p</code>, <code>A-o</code>, <code>A-i</code>, and <code>A-n</code> (or <code>Alt</code> and arrow keys) move the primary
|
|
|
|
|
selection according to the selection's place in the syntax tree. Let's walk
|
|
|
|
|
through an example to get familiar with them. Many languages have a syntax like
|
|
|
|
|
so for function calls:</p>
|
|
|
|
|
<pre><code>func(arg1, arg2, arg3)
|
|
|
|
|
</code></pre>
|
|
|
|
|
<p>A function call might be parsed by tree-sitter into a tree like the following.</p>
|
|
|
|
|
<pre><code class="language-tsq">(call
|
|
|
|
|
function: (identifier) ; func
|
|
|
|
|
arguments:
|
|
|
|
|
(arguments ; (arg1, arg2, arg3)
|
|
|
|
|
(identifier) ; arg1
|
|
|
|
|
(identifier) ; arg2
|
|
|
|
|
(identifier))) ; arg3
|
|
|
|
|
</code></pre>
|
|
|
|
|
<p>Use <code>:tree-sitter-subtree</code> to view the syntax tree of the primary selection. In
|
|
|
|
|
a more intuitive tree format:</p>
|
|
|
|
|
<pre><code> ┌────┐
|
|
|
|
|
│call│
|
|
|
|
|
┌─────┴────┴─────┐
|
|
|
|
|
│ │
|
|
|
|
|
┌─────▼────┐ ┌────▼────┐
|
|
|
|
|
│identifier│ │arguments│
|
|
|
|
|
│ "func" │ ┌────┴───┬─────┴───┐
|
|
|
|
|
└──────────┘ │ │ │
|
|
|
|
|
│ │ │
|
|
|
|
|
┌─────────▼┐ ┌────▼─────┐ ┌▼─────────┐
|
|
|
|
|
│identifier│ │identifier│ │identifier│
|
|
|
|
|
│ "arg1" │ │ "arg2" │ │ "arg3" │
|
|
|
|
|
└──────────┘ └──────────┘ └──────────┘
|
|
|
|
|
</code></pre>
|
|
|
|
|
<p>Say we have a selection that wraps <code>arg1</code>. The selection is on the <code>arg1</code> leaf
|
|
|
|
|
in the tree above.</p>
|
|
|
|
|
<pre><code>func([arg1], arg2, arg3)
|
|
|
|
|
</code></pre>
|
|
|
|
|
<p>Using <code>A-n</code> would select the next sibling in the syntax tree: <code>arg2</code>.</p>
|
|
|
|
|
<pre><code>func(arg1, [arg2], arg3)
|
|
|
|
|
</code></pre>
|
|
|
|
|
<p>While <code>A-o</code> would expand the selection to the parent node. In the tree above we
|
|
|
|
|
can see that we would select the <code>arguments</code> node.</p>
|
|
|
|
|
<pre><code>func[(arg1, arg2, arg3)]
|
|
|
|
|
</code></pre>
|
|
|
|
|
<p>There is also some nuanced behavior that prevents you from getting stuck on a
|
|
|
|
|
node with no sibling. If we have a selection on <code>arg1</code>, <code>A-p</code> would bring us
|
|
|
|
|
to the previous child node. Since <code>arg1</code> doesn't have a sibling to its left,
|
|
|
|
|
though, we climb the syntax tree and then take the previous selection. So <code>A-p</code>
|
|
|
|
|
will move the selection over to the "func" <code>identifier</code>.</p>
|
|
|
|
|
<pre><code>[func](arg1, arg2, arg3)
|
|
|
|
|
</code></pre>
|
|
|
|
|
<h2 id="textobjects"><a class="header" href="#textobjects">Textobjects</a></h2>
|
|
|
|
|
<p>Currently supported: <code>word</code>, <code>surround</code>, <code>function</code>, <code>class</code>, <code>parameter</code>.</p>
|
|
|
|
|
<p><img src="https://user-images.githubusercontent.com/23398472/124231131-81a4bb00-db2d-11eb-9d10-8e577ca7b177.gif" alt="textobject-demo" />
|
|
|
|
|
|
archseer
3 years ago