*/ private const ABSOLUTE_SIZE_UNITS = [ 'px', 'pt', 'pc', 'cm', 'mm', 'mozmm', 'in', 'vh', 'dvh', 'svh', 'lvh', 'vw', 'vmin', 'vmax', 'rem', ]; /** * @var list */ private const RELATIVE_SIZE_UNITS = ['%', 'em', 'ex', 'ch', 'fr']; /** * @var list */ private const NON_SIZE_UNITS = ['deg', 'grad', 'rad', 's', 'ms', 'turn', 'Hz', 'kHz']; /** * @var array, array>|null */ private static $SIZE_UNITS = null; /** * @var float */ private $size; /** * @var string|null */ private $unit; /** * @var bool */ private $isColorComponent; /** * @param float|int|string $size * @param int<1, max>|null $lineNumber */ public function __construct($size, ?string $unit = null, bool $isColorComponent = false, ?int $lineNumber = null) { parent::__construct($lineNumber); $this->size = (float) $size; $this->unit = $unit; $this->isColorComponent = $isColorComponent; } /** * @throws UnexpectedEOFException * @throws UnexpectedTokenException * * @internal since V8.8.0 */ public static function parse(ParserState $parserState, bool $isColorComponent = false): Size { $size = ''; if ($parserState->comes('-')) { $size .= $parserState->consume('-'); } while (\is_numeric($parserState->peek()) || $parserState->comes('.') || $parserState->comes('e', true)) { if ($parserState->comes('.')) { $size .= $parserState->consume('.'); } elseif ($parserState->comes('e', true)) { $lookahead = $parserState->peek(1, 1); if (\is_numeric($lookahead) || $lookahead === '+' || $lookahead === '-') { $size .= $parserState->consume(2); } else { break; // Reached the unit part of the number like "em" or "ex" } } else { $size .= $parserState->consume(1); } } $unit = null; $sizeUnits = self::getSizeUnits(); foreach ($sizeUnits as $length => &$values) { $key = \strtolower($parserState->peek($length)); if (\array_key_exists($key, $values)) { if (($unit = $values[$key]) !== null) { $parserState->consume($length); break; } } } return new Size((float) $size, $unit, $isColorComponent, $parserState->currentLine()); } /** * @return array, array> */ private static function getSizeUnits(): array { if (!\is_array(self::$SIZE_UNITS)) { self::$SIZE_UNITS = []; $sizeUnits = \array_merge(self::ABSOLUTE_SIZE_UNITS, self::RELATIVE_SIZE_UNITS, self::NON_SIZE_UNITS); foreach ($sizeUnits as $sizeUnit) { $tokenLength = \strlen($sizeUnit); if (!isset(self::$SIZE_UNITS[$tokenLength])) { self::$SIZE_UNITS[$tokenLength] = []; } self::$SIZE_UNITS[$tokenLength][\strtolower($sizeUnit)] = $sizeUnit; } \krsort(self::$SIZE_UNITS, SORT_NUMERIC); } return self::$SIZE_UNITS; } public function setUnit(string $unit): void { $this->unit = $unit; } public function getUnit(): ?string { return $this->unit; } /** * @param float|int|string $size */ public function setSize($size): void { $this->size = (float) $size; } public function getSize(): float { return $this->size; } public function isColorComponent(): bool { return $this->isColorComponent; } /** * Returns whether the number stored in this Size really represents a size (as in a length of something on screen). * * Returns `false` if the unit is an angle, a duration, a frequency, or the number is a component in a `Color` * object. */ public function isSize(): bool { if (\in_array($this->unit, self::NON_SIZE_UNITS, true)) { return false; } return !$this->isColorComponent(); } public function isRelative(): bool { if (\in_array($this->unit, self::RELATIVE_SIZE_UNITS, true)) { return true; } if ($this->unit === null && $this->size !== 0.0) { return true; } return false; } /** * @return non-empty-string */ public function render(OutputFormat $outputFormat): string { $locale = \localeconv(); $decimalPoint = \preg_quote($locale['decimal_point'], '/'); $size = \preg_match('/[\\d\\.]+e[+-]?\\d+/i', (string) $this->size) ? \preg_replace("/$decimalPoint?0+$/", '', \sprintf('%f', $this->size)) : (string) $this->size; return \preg_replace(["/$decimalPoint/", '/^(-?)0\\./'], ['.', '$1.'], $size) . ($this->unit ?? ''); } }