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ArgumentDeclaration.php
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ArgumentDeclaration.php
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<?php
/**
* SCSSPHP
*
* @copyright 2012-2020 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://scssphp.github.io/scssphp
*/
namespace ScssPhp\ScssPhp\Ast\Sass;
use ScssPhp\ScssPhp\SourceSpan\FileSpan;
/**
* An argument declaration, as for a function or mixin definition.
*
* @internal
*/
final class ArgumentDeclaration implements SassNode
{
/**
* @var list<Argument>
* @readonly
*/
private $arguments;
/**
* @var string|null
* @readonly
*/
private $restArgument;
/**
* @var FileSpan
* @readonly
*/
private $span;
/**
* @param list<Argument> $arguments
* @param FileSpan $span
* @param string|null $restArgument
*/
public function __construct(array $arguments, FileSpan $span, ?string $restArgument = null)
{
$this->arguments = $arguments;
$this->restArgument = $restArgument;
$this->span = $span;
}
public static function createEmpty(FileSpan $span): ArgumentDeclaration
{
return new self([], $span);
}
public function isEmpty(): bool
{
return \count($this->arguments) === 0 && $this->restArgument === null;
}
/**
* @return list<Argument>
*/
public function getArguments(): array
{
return $this->arguments;
}
public function getRestArgument(): ?string
{
return $this->restArgument;
}
public function getSpan(): FileSpan
{
return $this->span;
}
public function __toString(): string
{
$parts = [];
foreach ($this->arguments as $arg) {
$parts[] = "\$$arg";
}
if ($this->restArgument !== null) {
$parts[] = "\$$this->restArgument...";
}
return implode(', ', $parts);
}
}