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| 1 | <?php |
| 2 | /** |
| 3 | * @file |
| 4 | * @license https://opensource.org/licenses/Apache-2.0 Apache-2.0 |
| 5 | */ |
| 6 | |
| 7 | namespace Wikimedia\CSS\Objects; |
| 8 | |
| 9 | use InvalidArgumentException; |
| 10 | use Wikimedia\CSS\Util; |
| 11 | |
| 12 | /** |
| 13 | * Represent a CSS function, eg. `rgb(255, 0, 0)` |
| 14 | */ |
| 15 | class CSSFunction extends ComponentValue { |
| 16 | |
| 17 | /** @var string */ |
| 18 | protected $name; |
| 19 | |
| 20 | /** @var ComponentValueList */ |
| 21 | protected $value; |
| 22 | |
| 23 | /** |
| 24 | * @param Token $token Function token starting the rule |
| 25 | */ |
| 26 | public function __construct( Token $token ) { |
| 27 | if ( $token->type() !== Token::T_FUNCTION ) { |
| 28 | throw new InvalidArgumentException( |
| 29 | "CSS function must begin with a function token, got {$token->type()}" |
| 30 | ); |
| 31 | } |
| 32 | |
| 33 | [ $this->line, $this->pos ] = $token->getPosition(); |
| 34 | $this->name = $token->value(); |
| 35 | $this->value = new ComponentValueList(); |
| 36 | } |
| 37 | |
| 38 | public function __clone() { |
| 39 | $this->value = clone $this->value; |
| 40 | } |
| 41 | |
| 42 | /** |
| 43 | * Create a function by name |
| 44 | * @param string $name |
| 45 | * @return CSSFunction |
| 46 | */ |
| 47 | public static function newFromName( $name ) { |
| 48 | return new static( new Token( Token::T_FUNCTION, $name ) ); |
| 49 | } |
| 50 | |
| 51 | /** |
| 52 | * Return the function's name |
| 53 | * @return string |
| 54 | */ |
| 55 | public function getName() { |
| 56 | return $this->name; |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Return the function's value |
| 61 | * @return ComponentValueList |
| 62 | */ |
| 63 | public function getValue() { |
| 64 | return $this->value; |
| 65 | } |
| 66 | |
| 67 | /** |
| 68 | * Return an array of Tokens that correspond to this object. |
| 69 | * @return Token[] |
| 70 | */ |
| 71 | public function toTokenArray() { |
| 72 | $ret = []; |
| 73 | |
| 74 | $ret[] = new Token( |
| 75 | Token::T_FUNCTION, |
| 76 | [ 'value' => $this->name, 'position' => [ $this->line, $this->pos ] ] |
| 77 | ); |
| 78 | // Manually looping and appending turns out to be noticeably faster than array_merge. |
| 79 | foreach ( $this->value->toTokenArray() as $v ) { |
| 80 | $ret[] = $v; |
| 81 | } |
| 82 | $ret[] = new Token( Token::T_RIGHT_PAREN ); |
| 83 | |
| 84 | return $ret; |
| 85 | } |
| 86 | |
| 87 | public function __toString() { |
| 88 | return Util::stringify( $this ); |
| 89 | } |
| 90 | } |