クラス yii\di\Container

                protected function build($class, $params, $config)
{
    /* @var $reflection ReflectionClass */
    list($reflection, $dependencies) = $this->getDependencies($class);
    $addDependencies = [];
    if (isset($config['__construct()'])) {
        $addDependencies = $config['__construct()'];
        unset($config['__construct()']);
    }
    foreach ($params as $index => $param) {
        $addDependencies[$index] = $param;
    }
    $this->validateDependencies($addDependencies);
    if ($addDependencies && is_int(key($addDependencies))) {
        $dependencies = array_values($dependencies);
        $dependencies = $this->mergeDependencies($dependencies, $addDependencies);
    } else {
        $dependencies = $this->mergeDependencies($dependencies, $addDependencies);
        $dependencies = array_values($dependencies);
    }
    $dependencies = $this->resolveDependencies($dependencies, $reflection);
    if (!$reflection->isInstantiable()) {
        throw new NotInstantiableException($reflection->name);
    }
    if (empty($config)) {
        return $reflection->newInstanceArgs($dependencies);
    }
    $config = $this->resolveDependencies($config);
    if (!empty($dependencies) && $reflection->implementsInterface('yii\base\Configurable')) {
        // set $config as the last parameter (existing one will be overwritten)
        $dependencies[count($dependencies) - 1] = $config;
        return $reflection->newInstanceArgs($dependencies);
    }
    $object = $reflection->newInstanceArgs($dependencies);
    foreach ($config as $name => $value) {
        $object->$name = $value;
    }
    return $object;
}

            

                public function clear($class)
{
    unset($this->_definitions[$class], $this->_singletons[$class]);
}

            

                public function get($class, $params = [], $config = [])
{
    if ($class instanceof Instance) {
        $class = $class->id;
    }
    if (isset($this->_singletons[$class])) {
        // singleton
        return $this->_singletons[$class];
    } elseif (!isset($this->_definitions[$class])) {
        return $this->build($class, $params, $config);
    }
    $definition = $this->_definitions[$class];
    if (is_callable($definition, true)) {
        $params = $this->resolveDependencies($this->mergeParams($class, $params));
        $object = call_user_func($definition, $this, $params, $config);
    } elseif (is_array($definition)) {
        $concrete = $definition['class'];
        unset($definition['class']);
        $config = array_merge($definition, $config);
        $params = $this->mergeParams($class, $params);
        if ($concrete === $class) {
            $object = $this->build($class, $params, $config);
        } else {
            $object = $this->get($concrete, $params, $config);
        }
    } elseif (is_object($definition)) {
        return $this->_singletons[$class] = $definition;
    } else {
        throw new InvalidConfigException('Unexpected object definition type: ' . gettype($definition));
    }
    if (array_key_exists($class, $this->_singletons)) {
        // singleton
        $this->_singletons[$class] = $object;
    }
    return $object;
}

            

                public function getDefinitions()
{
    return $this->_definitions;
}

            

                protected function getDependencies($class)
{
    if (isset($this->_reflections[$class])) {
        return [$this->_reflections[$class], $this->_dependencies[$class]];
    }
    $dependencies = [];
    try {
        $reflection = new ReflectionClass($class);
    } catch (\ReflectionException $e) {
        throw new NotInstantiableException(
            $class,
            'Failed to instantiate component or class "' . $class . '".',
            0,
            $e
        );
    }
    $constructor = $reflection->getConstructor();
    if ($constructor !== null) {
        foreach ($constructor->getParameters() as $param) {
            if (PHP_VERSION_ID >= 50600 && $param->isVariadic()) {
                break;
            }
            if (PHP_VERSION_ID >= 80000) {
                $c = $param->getType();
                $isClass = false;
                if ($c instanceof ReflectionNamedType) {
                    $isClass = !$c->isBuiltin();
                }
            } else {
                try {
                    $c = $param->getClass();
                } catch (ReflectionException $e) {
                    if (!$this->isNulledParam($param)) {
                        $notInstantiableClass = null;
                        if (PHP_VERSION_ID >= 70000) {
                            $type = $param->getType();
                            if ($type instanceof ReflectionNamedType) {
                                $notInstantiableClass = $type->getName();
                            }
                        }
                        throw new NotInstantiableException(
                            $notInstantiableClass,
                            $notInstantiableClass === null ? 'Can not instantiate unknown class.' : null
                        );
                    } else {
                        $c = null;
                    }
                }
                $isClass = $c !== null;
            }
            $className = $isClass ? $c->getName() : null;
            if ($className !== null) {
                $dependencies[$param->getName()] = Instance::of($className, $this->isNulledParam($param));
            } else {
                $dependencies[$param->getName()] = $param->isDefaultValueAvailable()
                    ? $param->getDefaultValue()
                    : null;
            }
        }
    }
    $this->_reflections[$class] = $reflection;
    $this->_dependencies[$class] = $dependencies;
    return [$reflection, $dependencies];
}

            

                public function has($class)
{
    return isset($this->_definitions[$class]);
}

            

                public function hasSingleton($class, $checkInstance = false)
{
    return $checkInstance ? isset($this->_singletons[$class]) : array_key_exists($class, $this->_singletons);
}

            

                public function invoke(callable $callback, $params = [])
{
    return call_user_func_array($callback, $this->resolveCallableDependencies($callback, $params));
}

            

                protected function mergeParams($class, $params)
{
    if (empty($this->_params[$class])) {
        return $params;
    } elseif (empty($params)) {
        return $this->_params[$class];
    }
    $ps = $this->_params[$class];
    foreach ($params as $index => $value) {
        $ps[$index] = $value;
    }
    return $ps;
}

            

                protected function normalizeDefinition($class, $definition)
{
    if (empty($definition)) {
        return ['class' => $class];
    } elseif (is_string($definition)) {
        return ['class' => $definition];
    } elseif ($definition instanceof Instance) {
        return ['class' => $definition->id];
    } elseif (is_callable($definition, true) || is_object($definition)) {
        return $definition;
    } elseif (is_array($definition)) {
        if (!isset($definition['class']) && isset($definition['__class'])) {
            $definition['class'] = $definition['__class'];
            unset($definition['__class']);
        }
        if (!isset($definition['class'])) {
            if (strpos($class, '\\') !== false) {
                $definition['class'] = $class;
            } else {
                throw new InvalidConfigException('A class definition requires a "class" member.');
            }
        }
        return $definition;
    }
    throw new InvalidConfigException("Unsupported definition type for \"$class\": " . gettype($definition));
}

            

                public function resolveCallableDependencies(callable $callback, $params = [])
{
    if (is_array($callback)) {
        $reflection = new \ReflectionMethod($callback[0], $callback[1]);
    } elseif (is_object($callback) && !$callback instanceof \Closure) {
        $reflection = new \ReflectionMethod($callback, '__invoke');
    } else {
        $reflection = new \ReflectionFunction($callback);
    }
    $args = [];
    $associative = ArrayHelper::isAssociative($params);
    foreach ($reflection->getParameters() as $param) {
        $name = $param->getName();
        if (PHP_VERSION_ID >= 80000) {
            $class = $param->getType();
            if ($class instanceof \ReflectionUnionType || (PHP_VERSION_ID >= 80100 && $class instanceof \ReflectionIntersectionType)) {
                $isClass = false;
                foreach ($class->getTypes() as $type) {
                    if (!$type->isBuiltin()) {
                        $class = $type;
                        $isClass = true;
                        break;
                    }
                }
            } else {
                $isClass = $class !== null && !$class->isBuiltin();
            }
        } else {
            $class = $param->getClass();
            $isClass = $class !== null;
        }
        if ($isClass) {
            $className = $class->getName();
            if (PHP_VERSION_ID >= 50600 && $param->isVariadic()) {
                $args = array_merge($args, array_values($params));
                break;
            }
            if ($associative && isset($params[$name]) && $params[$name] instanceof $className) {
                $args[] = $params[$name];
                unset($params[$name]);
            } elseif (!$associative && isset($params[0]) && $params[0] instanceof $className) {
                $args[] = array_shift($params);
            } elseif (isset(Yii::$app) && Yii::$app->has($name) && ($obj = Yii::$app->get($name)) instanceof $className) {
                $args[] = $obj;
            } else {
                // If the argument is optional we catch not instantiable exceptions
                try {
                    $args[] = $this->get($className);
                } catch (NotInstantiableException $e) {
                    if ($param->isDefaultValueAvailable()) {
                        $args[] = $param->getDefaultValue();
                    } else {
                        throw $e;
                    }
                }
            }
        } elseif ($associative && isset($params[$name])) {
            $args[] = $params[$name];
            unset($params[$name]);
        } elseif (!$associative && count($params)) {
            $args[] = array_shift($params);
        } elseif ($param->isDefaultValueAvailable()) {
            $args[] = $param->getDefaultValue();
        } elseif (!$param->isOptional()) {
            $funcName = $reflection->getName();
            throw new InvalidConfigException("Missing required parameter \"$name\" when calling \"$funcName\".");
        }
    }
    foreach ($params as $value) {
        $args[] = $value;
    }
    return $args;
}

            

                protected function resolveDependencies($dependencies, $reflection = null)
{
    foreach ($dependencies as $index => $dependency) {
        if ($dependency instanceof Instance) {
            if ($dependency->id !== null) {
                $dependencies[$index] = $dependency->get($this);
            } elseif ($reflection !== null) {
                $name = $reflection->getConstructor()->getParameters()[$index]->getName();
                $class = $reflection->getName();
                throw new InvalidConfigException("Missing required parameter \"$name\" when instantiating \"$class\".");
            }
        } elseif ($this->_resolveArrays && is_array($dependency)) {
            $dependencies[$index] = $this->resolveDependencies($dependency, $reflection);
        }
    }
    return $dependencies;
}

            

                public function set($class, $definition = [], array $params = [])
{
    $this->_definitions[$class] = $this->normalizeDefinition($class, $definition);
    $this->_params[$class] = $params;
    unset($this->_singletons[$class]);
    return $this;
}

            

                public function setDefinitions(array $definitions)
{
    foreach ($definitions as $class => $definition) {
        if (is_array($definition) && count($definition) === 2 && array_values($definition) === $definition && is_array($definition[1])) {
            $this->set($class, $definition[0], $definition[1]);
            continue;
        }
        $this->set($class, $definition);
    }
}

            

                public function setResolveArrays($value)
{
    $this->_resolveArrays = (bool) $value;
}

            

                public function setSingleton($class, $definition = [], array $params = [])
{
    $this->_definitions[$class] = $this->normalizeDefinition($class, $definition);
    $this->_params[$class] = $params;
    $this->_singletons[$class] = null;
    return $this;
}

            

                public function setSingletons(array $singletons)
{
    foreach ($singletons as $class => $definition) {
        if (is_array($definition) && count($definition) === 2 && array_values($definition) === $definition) {
            $this->setSingleton($class, $definition[0], $definition[1]);
            continue;
        }
        $this->setSingleton($class, $definition);
    }
}