82 lines
2.1 KiB
PHP
82 lines
2.1 KiB
PHP
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<?php declare(strict_types=1);
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namespace PhpParser\Node\Scalar;
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use PhpParser\Node\Scalar;
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class DNumber extends Scalar
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{
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/** @var float Number value */
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public $value;
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/**
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* Constructs a float number scalar node.
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*
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* @param float $value Value of the number
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* @param array $attributes Additional attributes
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*/
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public function __construct(float $value, array $attributes = []) {
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$this->attributes = $attributes;
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$this->value = $value;
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}
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public function getSubNodeNames() : array {
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return ['value'];
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}
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/**
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* @param mixed[] $attributes
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*/
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public static function fromString(string $str, array $attributes = []): DNumber
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{
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$attributes['rawValue'] = $str;
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$float = self::parse($str);
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return new DNumber($float, $attributes);
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}
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/**
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* @internal
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*
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* Parses a DNUMBER token like PHP would.
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*
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* @param string $str A string number
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*
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* @return float The parsed number
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*/
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public static function parse(string $str) : float {
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$str = str_replace('_', '', $str);
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// if string contains any of .eE just cast it to float
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if (false !== strpbrk($str, '.eE')) {
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return (float) $str;
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}
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// otherwise it's an integer notation that overflowed into a float
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// if it starts with 0 it's one of the special integer notations
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if ('0' === $str[0]) {
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// hex
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if ('x' === $str[1] || 'X' === $str[1]) {
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return hexdec($str);
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}
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// bin
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if ('b' === $str[1] || 'B' === $str[1]) {
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return bindec($str);
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}
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// oct
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// substr($str, 0, strcspn($str, '89')) cuts the string at the first invalid digit (8 or 9)
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// so that only the digits before that are used
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return octdec(substr($str, 0, strcspn($str, '89')));
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}
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// dec
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return (float) $str;
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}
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public function getType() : string {
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return 'Scalar_DNumber';
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}
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}
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