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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;
use ScssPhp\ScssPhp\Util;
use ScssPhp\ScssPhp\Util\SpanUtil;
/**
* An argument declared as part of an {@see ArgumentDeclaration}.
*
* @internal
*/
final class Argument implements SassNode, SassDeclaration
{
/**
* @var string
* @readonly
*/
private $name;
/**
* @var Expression|null
* @readonly
*/
private $defaultValue;
/**
* @var FileSpan
* @readonly
*/
private $span;
public function __construct(string $name, FileSpan $span, ?Expression $defaultValue = null)
{
$this->name = $name;
$this->defaultValue = $defaultValue;
$this->span = $span;
}
public function getName(): string
{
return $this->name;
}
/**
* The variable name as written in the document, without underscores
* converted to hyphens and including the leading `$`.
*
* This isn't particularly efficient, and should only be used for error
* messages.
*/
public function getOriginalName(): string
{
if ($this->defaultValue === null) {
return $this->span->getText();
}
return Util::declarationName($this->span);
}
public function getNameSpan(): FileSpan
{
if ($this->defaultValue === null) {
return $this->span;
}
return SpanUtil::initialIdentifier($this->span, 1);
}
public function getDefaultValue(): ?Expression
{
return $this->defaultValue;
}
public function getSpan(): FileSpan
{
return $this->span;
}
public function __toString(): string
{
if ($this->defaultValue === null) {
return $this->name;
}
return $this->name . ': ' . $this->defaultValue;
}
}
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