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1 efrain 1 
<?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 file returning 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 DefinitionFile extends DefinitionArray
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{
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    private bool $initialized = false;
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    /**
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     * @param string $file File in which the definitions are returned as an array.
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     */
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    public function __construct(
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        private string $file,
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        Autowiring $autowiring = null,
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    ) {
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        // Lazy-loading to improve performances
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        parent::__construct([], $autowiring);
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    }
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    public function getDefinition(string $name) : Definition|null
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    {
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        $this->initialize();
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        return parent::getDefinition($name);
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    }
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    public function getDefinitions() : array
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    {
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        $this->initialize();
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        return parent::getDefinitions();
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    }
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    /**
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     * Lazy-loading of the definitions.
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     */
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    private function initialize() : void
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    {
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        if ($this->initialized === true) {
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            return;
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        }
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        $definitions = require $this->file;
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        if (! is_array($definitions)) {
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            throw new \Exception("File $this->file should return an array of definitions");
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        }
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        $this->addDefinitions($definitions);
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        $this->initialized = true;
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    }
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}