/**
* Exists the service?
* @param string service name
* @param bool must be created yet?
* @return bool
*/
public function hasService($name, $created = FALSE)
{
if (!is_string($name) || $name === '') {
throw new InvalidArgumentException("Service name must be a non-empty string, " . gettype($name) . " given.");
}
$lower = strtolower($name);
return isset($this->registry[$lower]) || !$created && isset($this->factories[$lower]) || $this->parent !== NULL && $this->parent->hasService($name, $created);
}
/**
* Gets the service object of the specified type.
* @param string service name
* @param bool throw exception if service doesn't exist?
* @return mixed
*/
public function getService($name, $need = TRUE)
{
if (!is_string($name) || $name === '') {
throw new InvalidArgumentException("Service name must be a non-empty string, " . gettype($name) . " given.");
}
$lower = strtolower($name);
if (isset($this->registry[$lower])) {
return $this->registry[$lower];
} elseif (isset($this->factories[$lower])) {
$service = $this->factories[$lower];
if (is_string($service)) {
if (substr($service, -2) === '()') {
// trick to pass callback as string
$service = substr($service, 0, -2);
} else {
fixNamespace($service);
if (!class_exists($service)) {
throw new AmbiguousServiceException("Cannot instantiate service '{$name}', class '{$service}' not found.");
}
return $this->registry[$lower] = new $service();
}
}
fixCallback($service);
if (!is_callable($service)) {
$able = is_callable($service, TRUE, $textual);
throw new AmbiguousServiceException("Cannot instantiate service '{$name}', handler '{$textual}' is not " . ($able ? 'callable.' : 'valid PHP callback.'));
}
return $this->registry[$lower] = call_user_func($service);
}
if ($this->parent !== NULL) {
return $this->parent->getService($name, $need);
} elseif ($need) {
throw new InvalidStateException("Service '{$name}' not found.");
} else {
return NULL;
}
}
/**
* Gets the service object of the specified type.
* @param string service name
* @param bool throw exception if service doesn't exist?
* @return mixed
*/
public function getService($name, $need = TRUE)
{
if (!is_string($name) || $name === '') {
throw new InvalidArgumentException('Service name must be a non-empty string.');
}
$lower = strtolower($name);
if (isset($this->registry[$lower])) {
return $this->registry[$lower];
} elseif (isset($this->factories[$lower])) {
$service = $this->factories[$lower];
if (is_string($service)) {
if (substr($service, -2) === '()') {
// trick to pass callback as string
$service = substr($service, 0, -2);
} else {
/**/
// fix for namespaced classes/interfaces in PHP < 5.3
if ($a = strrpos($service, '\\')) {
$service = substr($service, $a + 1);
}
/**/
if (!class_exists($service)) {
throw new AmbiguousServiceException("Cannot instantiate service, class '{$service}' not found.");
}
return $this->registry[$lower] = new $service();
}
}
return $this->registry[$lower] = call_user_func($service);
}
if ($this->parent !== NULL) {
return $this->parent->getService($name);
} elseif ($need) {
throw new InvalidStateException("Service '{$name}' not found.");
} else {
return NULL;
}
}
