Code Coverage for I:\www\pvcParser\src\php\ParserClassNode.php

1	<?php
2	/**
3	* @author: Doug Wilbourne (dougwilbourne@gmail.com)
4	*/
5
6	declare(strict_types=1);
7
8	namespace pvc\parser\php;
9
10	use PhpParser\Node\Stmt\Class_;
11	use PhpParser\NodeTraverser;
12	use PhpParser\NodeVisitor\NameResolver;
13	use PhpParser\ParserFactory;
14	use pvc\parser\err\NonExistentFilePathException;
15	use pvc\parser\php\node_visitors\NodeVisitorFirstClass;
16
17	/**
18	* Parses a file and returns the Class node from the abstract syntax tree generated by the PHP Parser package.
19	*
20	* Class ParserClassNode
21	*/
22	class ParserClassNode
23	{
24
25	public function parse(string $fileName) : ?Class_
26	{
27	if (false === ($code = file_get_contents($fileName))) {
28	throw new NonExistentFilePathException($fileName);
29	}
30	$parser = (new ParserFactory())->create(ParserFactory::PREFER_PHP7);
31	$nodes = $parser->parse($code);
32	if (empty($nodes)) {
33	return null;
34	}
35
36	$traverser = new NodeTraverser();
37	$nameResolver = new NameResolver();
38	$classVisitor = new NodeVisitorFirstClass();
39	$traverser->addVisitor($nameResolver);
40	$traverser->addVisitor($classVisitor);
41	$traverser->traverse($nodes);
42	return $classVisitor->getClassNode();
43	}
44	}