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<?php
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declare(strict_types=1);
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namespace DI\Definition\Source;
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use DI\Definition\Definition;
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/**
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* Reads DI definitions from a PHP array.
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*
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* @author Matthieu Napoli <matthieu@mnapoli.fr>
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*/
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class DefinitionArray implements DefinitionSource, MutableDefinitionSource
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{
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public const WILDCARD = '*';
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/**
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* Matches anything except "\".
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*/
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private const WILDCARD_PATTERN = '([^\\\\]+)';
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/** DI definitions in a PHP array. */
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private array $definitions;
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/** Cache of wildcard definitions. */
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private ?array $wildcardDefinitions = null;
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private DefinitionNormalizer $normalizer;
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public function __construct(array $definitions = [], Autowiring $autowiring = null)
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{
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if (isset($definitions[0])) {
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throw new \Exception('The PHP-DI definition is not indexed by an entry name in the definition array');
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}
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$this->definitions = $definitions;
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$this->normalizer = new DefinitionNormalizer($autowiring ?: new NoAutowiring);
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}
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/**
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* @param array $definitions DI definitions in a PHP array indexed by the definition name.
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*/
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public function addDefinitions(array $definitions) : void
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{
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if (isset($definitions[0])) {
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throw new \Exception('The PHP-DI definition is not indexed by an entry name in the definition array');
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}
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// The newly added data prevails
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// "for keys that exist in both arrays, the elements from the left-hand array will be used"
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$this->definitions = $definitions + $this->definitions;
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// Clear cache
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$this->wildcardDefinitions = null;
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}
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public function addDefinition(Definition $definition) : void
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{
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$this->definitions[$definition->getName()] = $definition;
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// Clear cache
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$this->wildcardDefinitions = null;
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}
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public function getDefinition(string $name) : Definition|null
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{
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// Look for the definition by name
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if (array_key_exists($name, $this->definitions)) {
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$definition = $this->definitions[$name];
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return $this->normalizer->normalizeRootDefinition($definition, $name);
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}
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// Build the cache of wildcard definitions
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if ($this->wildcardDefinitions === null) {
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$this->wildcardDefinitions = [];
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foreach ($this->definitions as $key => $definition) {
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if (str_contains($key, self::WILDCARD)) {
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$this->wildcardDefinitions[$key] = $definition;
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}
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}
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}
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// Look in wildcards definitions
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foreach ($this->wildcardDefinitions as $key => $definition) {
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// Turn the pattern into a regex
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$key = preg_quote($key, '#');
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$key = '#^' . str_replace('\\' . self::WILDCARD, self::WILDCARD_PATTERN, $key) . '#';
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if (preg_match($key, $name, $matches) === 1) {
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array_shift($matches);
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return $this->normalizer->normalizeRootDefinition($definition, $name, $matches);
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}
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}
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return null;
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}
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public function getDefinitions() : array
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{
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// Return all definitions except wildcard definitions
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$definitions = [];
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foreach ($this->definitions as $key => $definition) {
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if (! str_contains($key, self::WILDCARD)) {
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$definitions[$key] = $definition;
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}
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}
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return $definitions;
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}
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}
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