| 1 |
<?php |
| 2 |
|
| 3 |
declare(strict_types=1); |
| 4 |
|
| 5 |
namespace DI\Definition; |
| 6 |
|
| 7 |
use DI\DependencyException; |
| 8 |
use Psr\Container\ContainerInterface; |
| 9 |
use Psr\Container\NotFoundExceptionInterface; |
| 10 |
|
| 11 |
/** |
| 12 |
* Definition of a string composed of other strings. |
| 13 |
* |
| 14 |
* @since 5.0 |
| 15 |
* @author Matthieu Napoli <[email protected]> |
| 16 |
*/ |
| 17 |
class StringDefinition implements Definition, SelfResolvingDefinition |
| 18 |
{ |
| 19 |
/** |
| 20 |
* Entry name. |
| 21 |
* @var string |
| 22 |
*/ |
| 23 |
private $name = ''; |
| 24 |
|
| 25 |
/** |
| 26 |
* @var string |
| 27 |
*/ |
| 28 |
private $expression; |
| 29 |
|
| 30 |
public function __construct(string $expression) |
| 31 |
{ |
| 32 |
$this->expression = $expression; |
| 33 |
} |
| 34 |
|
| 35 |
public function getName() : string |
| 36 |
{ |
| 37 |
return $this->name; |
| 38 |
} |
| 39 |
|
| 40 |
public function setName(string $name) |
| 41 |
{ |
| 42 |
$this->name = $name; |
| 43 |
} |
| 44 |
|
| 45 |
public function getExpression() : string |
| 46 |
{ |
| 47 |
return $this->expression; |
| 48 |
} |
| 49 |
|
| 50 |
public function resolve(ContainerInterface $container) : string |
| 51 |
{ |
| 52 |
return self::resolveExpression($this->name, $this->expression, $container); |
| 53 |
} |
| 54 |
|
| 55 |
public function isResolvable(ContainerInterface $container) : bool |
| 56 |
{ |
| 57 |
return true; |
| 58 |
} |
| 59 |
|
| 60 |
public function replaceNestedDefinitions(callable $replacer) |
| 61 |
{ |
| 62 |
// no nested definitions |
| 63 |
} |
| 64 |
|
| 65 |
public function __toString() |
| 66 |
{ |
| 67 |
return $this->expression; |
| 68 |
} |
| 69 |
|
| 70 |
/** |
| 71 |
* Resolve a string expression. |
| 72 |
*/ |
| 73 |
public static function resolveExpression( |
| 74 |
string $entryName, |
| 75 |
string $expression, |
| 76 |
ContainerInterface $container |
| 77 |
) : string { |
| 78 |
$callback = function (array $matches) use ($entryName, $container) { |
| 79 |
try { |
| 80 |
return $container->get($matches[1]); |
| 81 |
} catch (NotFoundExceptionInterface $e) { |
| 82 |
throw new DependencyException(sprintf( |
| 83 |
"Error while parsing string expression for entry '%s': %s", |
| 84 |
$entryName, |
| 85 |
$e->getMessage() |
| 86 |
), 0, $e); |
| 87 |
} |
| 88 |
}; |
| 89 |
|
| 90 |
$result = preg_replace_callback('#\{([^\{\}]+)\}#', $callback, $expression); |
| 91 |
if ($result === null) { |
| 92 |
throw new \RuntimeException(sprintf('An unknown error occurred while parsing the string definition: \'%s\'', $expression)); |
| 93 |
} |
| 94 |
|
| 95 |
return $result; |
| 96 |
} |
| 97 |
} |
| 98 |
|
