Implement Rule

src/Components/Blocks/Rule.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Erusev\Parsedown\Components\Blocks;
+
+use Erusev\Parsedown\AST\StateRenderable;
+use Erusev\Parsedown\Components\Block;
+use Erusev\Parsedown\Html\Renderables\Element;
+use Erusev\Parsedown\Parsedown;
+use Erusev\Parsedown\Parsing\Context;
+use Erusev\Parsedown\State;
+
+final class Rule implements Block
+{
+    use BlockAcquisition;
+
+    /**
+     * @param Context $Context
+     * @param Block|null $Block
+     * @param State|null $State
+     * @return static|null
+     */
+    public static function build(
+        Context $Context,
+        Block $Block = null,
+        State $State = null
+    ) {
+        $marker = $Context->line()->text()[0];
+
+        if (\substr_count($Context->line()->text(), $marker) >= 3 and \chop($Context->line()->text(), " $marker") === '') {
+            return new self;
+        }
+
+        return null;
+    }
+
+    /**
+     * @return Element
+     */
+    public function stateRenderable(Parsedown $_)
+    {
+        return Element::selfClosing('hr', []);
+    }
+}