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<?php |
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namespace BFW\Core; |
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use \Exception; |
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/** |
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* Class to manage all modules in the application |
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*/ |
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class ModuleList |
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{ |
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/** |
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* @const ERR_NOT_FOUND Exception code if a module is not found |
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*/ |
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const ERR_NOT_FOUND = 1204001; |
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/** |
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* @const ERR_NEEDED_NOT_FOUND Exception code if a needed dependency is |
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* not found. |
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*/ |
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const ERR_NEEDED_NOT_FOUND = 1204002; |
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/** |
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* @var \BFW\Module[] All module instance |
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*/ |
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protected $modules = []; |
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/** |
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* @var array $loadTree The dependency tree for all modules |
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*/ |
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protected $loadTree = []; |
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/** |
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* Get the module's list |
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* |
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* @return \BFW\Module[] |
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*/ |
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public function getModules(): array |
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{ |
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return $this->modules; |
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} |
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/** |
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* Get the dependency tree |
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* |
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* @return array |
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*/ |
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public function getLoadTree(): array |
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{ |
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return $this->loadTree; |
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} |
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/** |
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* Add a module to the modules's list |
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* And instantiate \BFW\Module for this module |
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* |
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* @param string $moduleName The module's name |
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* |
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* @return void |
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*/ |
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public function addModule(string $moduleName) |
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{ |
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$this->modules[$moduleName] = new \BFW\Module($moduleName); |
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$this->modules[$moduleName]->loadModule(); |
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} |
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/** |
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* Get the \BFW\Module instance for a module |
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* |
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* @param string $moduleName The module's name |
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* |
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* @return \BFW\Module |
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* |
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* @throws \Exception If the module is not found |
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*/ |
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public function getModuleByName(string $moduleName): \BFW\Module |
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{ |
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if (!isset($this->modules[$moduleName])) { |
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throw new Exception( |
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'The Module '.$moduleName.' has not been found.', |
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$this::ERR_NOT_FOUND |
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); |
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} |
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return $this->modules[$moduleName]; |
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} |
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/** |
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* Read the "needMe" property for each module and add the dependency |
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* |
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* @throws \Exception If the dependency is not found |
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* |
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* @return void |
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*/ |
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public function readNeedMeDependencies() |
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{ |
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foreach ($this->modules as $readModuleName => $module) { |
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$loadInfos = $module->getLoadInfos(); |
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if (!property_exists($loadInfos, 'needMe')) { |
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continue; |
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} |
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$needMe = (array) $loadInfos->needMe; |
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foreach ($needMe as $needModuleName) { |
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if (!isset($this->modules[$needModuleName])) { |
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throw new Exception( |
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'Module error: '.$readModuleName |
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.' need '.$needModuleName |
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.' but the module has not been found.', |
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$this::ERR_NEEDED_NOT_FOUND |
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); |
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} |
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$this->modules[$needModuleName]->addDependency( |
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$readModuleName |
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); |
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} |
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} |
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} |
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/** |
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* Generate the dependency tree for all declared module |
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* |
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* @return void |
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*/ |
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public function generateTree() |
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{ |
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$tree = new \bultonFr\DependencyTree\DependencyTree; |
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foreach ($this->modules as $moduleName => $module) { |
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$priority = 0; |
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$depends = []; |
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$loadInfos = $module->getLoadInfos(); |
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if (property_exists($loadInfos, 'priority')) { |
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$priority = (int) $loadInfos->priority; |
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} |
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if (property_exists($loadInfos, 'require')) { |
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$depends = (array) $loadInfos->require; |
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} |
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$tree->addDependency($moduleName, $priority, $depends); |
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} |
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$this->loadTree = $tree->generateTree(); |
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} |
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} |
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bfw-systems /
bfw
