betterdocs / includes / Dependencies / DI / Definition / Source / SourceChain.php

SourceChain.php in BetterDocs – AI Documentation, Knowledge Base, MCP Server, Docs, Wikis, FAQ & Chatbot 4.5.4, at includes/Dependencies/DI/Definition/Source/SourceChain.php

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1	<?php
2
3	declare(strict_types=1);
4
5	namespace WPDeveloper\BetterDocs\Dependencies\DI\Definition\Source;
6
7	use WPDeveloper\BetterDocs\Dependencies\DI\Definition\Definition;
8	use WPDeveloper\BetterDocs\Dependencies\DI\Definition\ExtendsPreviousDefinition;
9
10	/**
11	* Manages a chain of other definition sources.
12	*
13	* @author Matthieu Napoli <matthieu@mnapoli.fr>
14	*/
15	class SourceChain implements DefinitionSource, MutableDefinitionSource
16	{
17	/**
18	* @var DefinitionSource[]
19	*/
20	private $sources;
21
22	/**
23	* @var DefinitionSource
24	*/
25	private $rootSource;
26
27	/**
28	* @var MutableDefinitionSource\|null
29	*/
30	private $mutableSource;
31
32	/**
33	* @param DefinitionSource[] $sources
34	*/
35	public function __construct(array $sources)
36	{
37	// We want a numerically indexed array to ease the traversal later
38	$this->sources = array_values($sources);
39	$this->rootSource = $this;
40	}
41
42	/**
43	* {@inheritdoc}
44	*
45	* @param int $startIndex Use this parameter to start looking from a specific
46	* point in the source chain.
47	*/
48	public function getDefinition(string $name, int $startIndex = 0)
49	{
50	$count = count($this->sources);
51	for ($i = $startIndex; $i < $count; ++$i) {
52	$source = $this->sources[$i];
53
54	$definition = $source->getDefinition($name);
55
56	if ($definition) {
57	if ($definition instanceof ExtendsPreviousDefinition) {
58	$this->resolveExtendedDefinition($definition, $i);
59	}
60
61	return $definition;
62	}
63	}
64
65	return null;
66	}
67
68	public function getDefinitions() : array
69	{
70	$names = [];
71	foreach ($this->sources as $source) {
72	$names = array_merge($names, $source->getDefinitions());
73	}
74	$names = array_keys($names);
75
76	$definitions = array_combine($names, array_map(function (string $name) {
77	return $this->getDefinition($name);
78	}, $names));
79
80	return $definitions;
81	}
82
83	public function addDefinition(Definition $definition)
84	{
85	if (! $this->mutableSource) {
86	throw new \LogicException("The container's definition source has not been initialized correctly");
87	}
88
89	$this->mutableSource->addDefinition($definition);
90	}
91
92	private function resolveExtendedDefinition(ExtendsPreviousDefinition $definition, int $currentIndex)
93	{
94	// Look in the next sources only (else infinite recursion, and we can only extend
95	// entries defined in the previous definition files - a previous == next here because
96	// the array was reversed ;) )
97	$subDefinition = $this->getDefinition($definition->getName(), $currentIndex + 1);
98
99	if ($subDefinition) {
100	$definition->setExtendedDefinition($subDefinition);
101	}
102	}
103
104	public function setMutableDefinitionSource(MutableDefinitionSource $mutableSource)
105	{
106	$this->mutableSource = $mutableSource;
107
108	array_unshift($this->sources, $mutableSource);
109	}
110	}
111