Code Coverage for /src/src/TreeBuilder/TemplateModeStack.php

1	<?php
2
3	namespace Wikimedia\RemexHtml\TreeBuilder;
4
5	/**
6	* The stack of template insertion modes. We use a storage model optimised for
7	* access to the element at the top of the stack, which is stored separately
8	* from the rest of the stack.
9	*/
10	class TemplateModeStack {
11	/**
12	* The insertion mode at the top of the stack. This is public for
13	* performance reasons but should be treated as read-only.
14	* @var int\|null
15	*/
16	public $current;
17
18	/**
19	* The remainder of the stack
20	*
21	* @var array
22	*/
23	private $nonCurrentModes = [];
24
25	/**
26	* Push a mode on to the stack
27	* @param int $mode
28	*/
29	public function push( $mode ) {
30	$this->nonCurrentModes[] = $this->current;
31	$this->current = $mode;
32	}
33
34	/**
35	* Pop a mode from the stack
36	*/
37	public function pop() {
38	$this->current = array_pop( $this->nonCurrentModes );
39	}
40
41	/**
42	* Return true if the stack is empty, false otherwise
43	* @return bool
44	*/
45	public function isEmpty() {
46	return $this->current === null;
47	}
48	}