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<?php |
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/** |
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* Created by Vitaly Iegorov <[email protected]>. |
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* on 26.01.16 at 15:11 |
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*/ |
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namespace samsonframework\di; |
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use samsonframework\di\exception\ContainerException; |
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class Container extends AbstractContainer |
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{ |
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/** Variable name for storing services */ |
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const STATIC_COLLECTION_VARIABLE = '$services'; |
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/** @var array[string] Collection of loaded services */ |
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protected $services = array(); |
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/** |
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* Set service dependency. Upon first creation of this class instance |
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* it would be used everywhere where this dependency is needed. |
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* |
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* @param string $className Fully qualified class name |
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* @param array $parameters Collection of parameters needed for dependency creation |
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* @param string $alias Dependency name |
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* |
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* @return $this Chaining |
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*/ |
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public function service($className, array $parameters, $alias = null) |
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{ |
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$this->services[$className] = $className; |
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return $this->set($className, $parameters, $alias); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function set($className, array $parameters, $alias = null) |
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{ |
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// Merge other class constructor parameters |
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$this->dependencies[$className] = $parameters; |
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// Store alias for this class name |
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$this->aliases[$className] = $alias ?: $className; |
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} |
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/** |
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* Generate initial class instance declaration |
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* @param string $className Entity class name |
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*/ |
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protected function generateInitialDeclaration($className) |
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{ |
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if (array_key_exists($className, $this->services)) { |
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// Start service search or creation |
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$this->generator |
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->text('isset('.self::STATIC_COLLECTION_VARIABLE.'[\''.$this->aliases[$className].'\'])') |
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->newLine('? '.self::STATIC_COLLECTION_VARIABLE.'[\''.$this->aliases[$className].'\']') |
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->newLine(': '.self::STATIC_COLLECTION_VARIABLE.'[\''.$this->aliases[$className].'\'] = new '.$className.'(')->tabs++; |
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} else { |
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// Start object instance creation |
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$this->generator->text('new ' . $className . '(')->tabs++; |
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} |
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} |
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/** |
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* Parse class dependencies generated by dependency tree. |
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* |
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* @param mixed $dependency Dependency value |
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* @param string $variable Dependency name |
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* @param string $className |
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* |
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* @throws ContainerException |
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*/ |
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protected function parseClassDependencies($dependency, $variable, $className) |
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{ |
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// If dependency value is a string |
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if (is_string($dependency)) { |
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// Define if we have this dependency described in dependency tree |
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if (array_key_exists($dependency, $this->dependencies)) { |
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// Call container logic for this dependency |
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$this->generator->newLine($this->logicCallable.'(\''.$dependency.'\')'); |
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} else { // String variable |
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$this->generator->newLine()->stringValue($dependency); |
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} |
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} elseif (is_array($dependency)) { // Dependency value is array |
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$this->generator->newLine()->arrayValue($dependency); |
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} else { |
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throw new ContainerException('Cannot set dependency for '.$className . '::' . $variable); |
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} |
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} |
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/** |
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* Generate container dependency condition code. |
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* |
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* @param string $className |
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* @param mixed $dependencies |
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* @param int $level |
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* |
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* @throws ContainerException |
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* |
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*/ |
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protected function generateCondition($className, &$dependencies, $level = 0) |
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{ |
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$this->generator->newLine(($level === 0) ? 'return ' : ''); |
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$this->generateInitialDeclaration($className); |
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// Get last dependency variable name |
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end($dependencies); |
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$last = key($dependencies); |
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// Iterate all dependencies for this class |
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foreach ($dependencies as $variable => $dependency) { |
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$this->parseClassDependencies($dependency, $variable, $className); |
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// Add comma if this is not last dependency |
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if ($variable !== $last) { |
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$this->generator->text(','); |
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} |
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} |
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$this->generator->tabs--; |
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if (count($dependencies)) { |
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$this->generator->newLine(')' . ($level === 0 ? ';' : '')); |
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} else { |
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$this->generator->text(')' . ($level === 0 ? ';' : '')); |
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} |
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} |
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} |
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samsonframework /
di
