/usr/share/php/Nette/DI/Helpers.php is in php-nette 2.3.8-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* This file is part of the Nette Framework (https://nette.org)
* Copyright (c) 2004 David Grudl (https://davidgrudl.com)
*/
namespace Nette\DI;
use Nette;
/**
* The DI helpers.
* @internal
*/
class Helpers
{
/**
* Expands %placeholders%.
* @param mixed
* @param array
* @param bool|array
* @return mixed
* @throws Nette\InvalidArgumentException
*/
public static function expand($var, array $params, $recursive = FALSE)
{
if (is_array($var)) {
$res = array();
foreach ($var as $key => $val) {
$res[$key] = self::expand($val, $params, $recursive);
}
return $res;
} elseif ($var instanceof Statement) {
return new Statement(self::expand($var->getEntity(), $params, $recursive), self::expand($var->arguments, $params, $recursive));
} elseif (!is_string($var)) {
return $var;
}
$parts = preg_split('#%([\w.-]*)%#i', $var, -1, PREG_SPLIT_DELIM_CAPTURE);
$res = '';
foreach ($parts as $n => $part) {
if ($n % 2 === 0) {
$res .= $part;
} elseif ($part === '') {
$res .= '%';
} elseif (isset($recursive[$part])) {
throw new Nette\InvalidArgumentException(sprintf('Circular reference detected for variables: %s.', implode(', ', array_keys($recursive))));
} else {
try {
$val = Nette\Utils\Arrays::get($params, explode('.', $part));
} catch (Nette\InvalidArgumentException $e) {
throw new Nette\InvalidArgumentException("Missing parameter '$part'.", 0, $e);
}
if ($recursive) {
$val = self::expand($val, $params, (is_array($recursive) ? $recursive : array()) + array($part => 1));
}
if (strlen($part) + 2 === strlen($var)) {
return $val;
}
if (!is_scalar($val)) {
throw new Nette\InvalidArgumentException("Unable to concatenate non-scalar parameter '$part' into '$var'.");
}
$res .= $val;
}
}
return $res;
}
/**
* Generates list of arguments using autowiring.
* @return array
*/
public static function autowireArguments(\ReflectionFunctionAbstract $method, array $arguments, $container)
{
$optCount = 0;
$num = -1;
$res = array();
$methodName = ($method instanceof \ReflectionMethod ? $method->getDeclaringClass()->getName() . '::' : '')
. $method->getName() . '()';
foreach ($method->getParameters() as $num => $parameter) {
if (array_key_exists($num, $arguments)) {
$res[$num] = $arguments[$num];
unset($arguments[$num]);
$optCount = 0;
} elseif (array_key_exists($parameter->getName(), $arguments)) {
$res[$num] = $arguments[$parameter->getName()];
unset($arguments[$parameter->getName()]);
$optCount = 0;
} elseif (($class = PhpReflection::getParameterType($parameter)) && !PhpReflection::isBuiltinType($class)) {
$res[$num] = $container->getByType($class, FALSE);
if ($res[$num] === NULL) {
if ($parameter->allowsNull()) {
$optCount++;
} elseif (class_exists($class) || interface_exists($class)) {
throw new ServiceCreationException("Service of type {$class} needed by $methodName not found. Did you register it in configuration file?");
} else {
throw new ServiceCreationException("Class {$class} needed by $methodName not found. Check type hint and 'use' statements.");
}
} else {
if ($container instanceof ContainerBuilder) {
$res[$num] = '@' . $res[$num];
}
$optCount = 0;
}
} elseif ($parameter->isOptional() || $parameter->isDefaultValueAvailable()) {
// !optional + defaultAvailable = func($a = NULL, $b) since 5.3.17 & 5.4.7
// optional + !defaultAvailable = i.e. Exception::__construct, mysqli::mysqli, ...
$res[$num] = $parameter->isDefaultValueAvailable() ? $parameter->getDefaultValue() : NULL;
$optCount++;
} else {
throw new ServiceCreationException("Parameter \${$parameter->getName()} in $methodName has no class type hint or default value, so its value must be specified.");
}
}
// extra parameters
while (array_key_exists(++$num, $arguments)) {
$res[$num] = $arguments[$num];
unset($arguments[$num]);
$optCount = 0;
}
if ($arguments) {
throw new ServiceCreationException("Unable to pass specified arguments to $methodName.");
}
return $optCount ? array_slice($res, 0, -$optCount) : $res;
}
}
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