add Bounds class

Author: patinthehat

src/Bounds.php

@@ -0,0 +1,50 @@
+<?php
+
+namespace Permafrost\CodeSnippets;
+
+class Bounds
+{
+    /** @var int */
+    public $start = 0;
+
+    /** @var int */
+    public $end = 0;
+
+    public function __construct(int $start, int $end)
+    {
+        $this->start = $start;
+        $this->end = $end;
+    }
+
+    public static function create(int $start, int $end): self
+    {
+        return new static(...func_get_args());
+    }
+
+    public static function createFromArray(array $lineNumbers): self
+    {
+        sort($lineNumbers, SORT_NUMERIC);
+
+        return static::create($lineNumbers[0], $lineNumbers[count($lineNumbers) - 1]);
+    }
+
+    public function toArray(): array
+    {
+        return [$this->start, $this->end];
+    }
+
+    public function mergeWith(self $bounds): self
+    {
+        $data = array_merge($this->toArray(), $bounds->toArray());
+
+        return static::createFromArray($data);
+    }
+
+    public function copy(self $bounds): self
+    {
+        $this->start = $bounds->start;
+        $this->end = $bounds->end;
+
+        return $this;
+    }
+}