Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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TreeBuilder.php
01 <?php
02
03 /*
04 * This file is part of the Symfony package.
05 *
06 * (c) Fabien Potencier <fabien@symfony.com>
07 *
08 * For the full copyright and license information, please view the LICENSE
09 * file that was distributed with this source code.
10 */
11
12 namespace Symfony\Component\Config\Definition\Builder;
13
14 use Symfony\Component\Config\Definition\NodeInterface;
15
16 /**
17 * This is the entry class for building a config tree.
18 *
19 * @author Johannes M. Schmitt <schmittjoh@gmail.com>
20 */
21 class TreeBuilder implements NodeParentInterface
22 {
23 protected $tree;
24 protected $root;
25 protected $builder;
26
27 /**
28 * Creates the root node.
29 *
30 * @param string $name The name of the root node
31 * @param string $type The type of the root node
32 * @param NodeBuilder $builder A custom node builder instance
33 *
34 * @return ArrayNodeDefinition|NodeDefinition The root node (as an ArrayNodeDefinition when the type is 'array')
35 *
36 * @throws \RuntimeException When the node type is not supported
37 */
38 public function root($name, $type = 'array', NodeBuilder $builder = null)
39 {
40 $builder = $builder ?: new NodeBuilder();
41
42 return $this->root = $builder->node($name, $type)->setParent($this);
43 }
44
45 /**
46 * Builds the tree.
47 *
48 * @return NodeInterface
49 *
50 * @throws \RuntimeException
51 */
52 public function buildTree()
53 {
54 if (null === $this->root) {
55 throw new \RuntimeException('The configuration tree has no root node.');
56 }
57 if (null !== $this->tree) {
58 return $this->tree;
59 }
60
61 return $this->tree = $this->root->getNode(true);
62 }
63 }
64