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<?php |
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namespace Cadre\Module; |
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use ArrayIterator; |
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use Aura\Di\Container; |
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use Aura\Di\ContainerConfigInterface; |
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class ModuleLoader implements ModuleLoaderInterface |
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{ |
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protected $modules = []; |
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protected $environment; |
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protected $isResolved = false; |
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protected $containerConfigs = []; |
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protected $conflictsWith = []; |
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protected $replacedWith = []; |
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public function __construct(array $modules, $environment = '') |
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{ |
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$this->modules = $modules; |
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$this->environment = $environment; |
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} |
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public function define(Container $di) |
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{ |
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$this->resolveDependencies(); |
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foreach ($this->containerConfigs as $containerConfig) { |
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if ($containerConfig instanceof ContainerConfigInterface) { |
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$containerConfig->define($di); |
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} |
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} |
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} |
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public function modify(Container $di) |
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{ |
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$this->resolveDependencies(); |
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foreach ($this->containerConfigs as $containerConfig) { |
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if ($containerConfig instanceof ContainerConfigInterface) { |
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$containerConfig->modify($di); |
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} |
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} |
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} |
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public function loaded($name) |
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{ |
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$this->resolveDependencies(); |
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return isset($this->containerConfigs[$name]); |
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} |
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public function isEnv($environment) |
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{ |
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return 0 === strcmp($environment, $this->environment); |
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} |
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protected function resolveDependencies() |
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{ |
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if ($this->isResolved) { |
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return; |
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} |
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$modules = new ArrayIterator($this->modules); |
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foreach ($modules as $module) { |
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$module = $this->getModule($module); |
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$name = get_class($module); |
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if (isset($this->containerConfigs[$name])) { |
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continue; |
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} |
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if (isset($this->replacedWith[$name])) { |
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continue; |
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} |
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if (isset($this->conflictsWith[$name])) { |
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throw new ConflictingModuleException($name, $this->conflictsWith[$name]); |
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} |
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$this->containerConfigs[$name] = $module; |
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$this->resolveRequire($modules, $module); |
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$this->resolveRequireEnv($modules, $module); |
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$this->resolveConflict($module, $name); |
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$this->resolveReplace($module, $name); |
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} |
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$this->isResolved = true; |
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} |
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protected function resolveRequire($modules, $module) |
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{ |
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$requiredModules = $module->require(); |
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foreach ($requiredModules as $requiredModule) { |
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$modules->append($requiredModule); |
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} |
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} |
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protected function resolveRequireEnv($modules, $module) |
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{ |
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$envMethod = 'require' . str_replace(' ', '', ucwords( |
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strtolower(str_replace('_', ' ', trim($this->environment))) |
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)); |
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if ('require' !== $envMethod && method_exists($module, $envMethod)) { |
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$requiredModules = $module->$envMethod(); |
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foreach ($requiredModules as $requiredModule) { |
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$modules->append($requiredModule); |
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} |
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} |
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} |
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protected function resolveConflict($module, $name) |
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{ |
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$conflictingModules = $module->conflict(); |
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foreach ($conflictingModules as $conflictingModule) { |
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$this->conflictsWith[$conflictingModule] = $name; |
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if (isset($this->containerConfigs[$conflictingModule])) { |
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throw new ConflictingModuleException($conflictingModule, $name); |
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} |
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} |
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} |
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protected function resolveReplace($module, $name) |
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{ |
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$replacesModules = $module->replace(); |
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foreach ($replacesModules as $replacesModule) { |
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if (isset($this->replacedWith[$replacesModule])) { |
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throw new AlreadyReplacedException( |
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$name, |
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$replacesModule, |
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$this->replacedWith[$replacesModule] |
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); |
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} |
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if (isset($this->containerConfigs[$replacesModule])) { |
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throw new AlreadyLoadedException( |
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$name, |
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'replace', |
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$replacesModule |
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); |
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} |
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$this->replacedWith[$replacesModule] = $name; |
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} |
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} |
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protected function getModule($module) |
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{ |
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if (is_string($module)) { |
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$module = new $module($this); |
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} |
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if (! $module instanceof ModuleInterface) { |
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throw new \InvalidArgumentException( |
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'Modules must implement ModuleInterface' |
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); |
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} |
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return $module; |
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} |
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} |
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cadrephp /
Cadre.Module
