How does Magento\Setup\Module\Di\Compiler\Config\ModificationChain::modify() work?

dmitry_fedyuk · October 13, 2017, 11:49pm

Context: How are the generated/medatata files generated in Magento 2.2?

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Module/Di/Compiler/Config/ModificationChain.php#L32-L45


/**
 * Modifies input config
 *
 * @param array $config
 * @return array
 */
public function modify(array $config)
{
    $outputConfig = $config;
    foreach ($this->modificationsList as $modification) {
        $outputConfig = $modification->modify($outputConfig);
    }
    return $outputConfig;
}

github.com

magento/magento2/blob/2.2.0/setup/src/Magento/Setup/Console/Command/DiCompileCommand.php#L306-L325


], \Magento\Setup\Module\Di\Compiler\Config\ModificationChain::class => [
    'arguments' => [
        'modificationsList' => [
            'BackslashTrim' => [
                'instance' =>
                    \Magento\Setup\Module\Di\Compiler\Config\Chain\BackslashTrim::class
            ],
            'PreferencesResolving' => [
                'instance' =>
                    \Magento\Setup\Module\Di\Compiler\Config\Chain\PreferencesResolving::class
            ],
            'InterceptorSubstitution' => [
                'instance' =>
                    \Magento\Setup\Module\Di\Compiler\Config\Chain\InterceptorSubstitution::class
            ],
            'InterceptionPreferencesResolving' => [
                'instance' => \Magento\Setup\Module\Di\Compiler\Config\Chain\PreferencesResolving::class
            ],
        ]
    ]

Details: