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87 lines
1.3 KiB
87 lines
1.3 KiB
<?php
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declare(strict_types=1);
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namespace App\Cfnpp\Expression\Token;
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use App\Cfnpp\Expression\Token;
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use App\Cfnpp\Expression\TokenLiteral;
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/**
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* A number literal.
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*
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* @author Adam Pippin <hello@adampippin.ca>
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*/
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class NumericLiteral extends TokenLiteral
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{
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/**
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* Value of this literal.
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* @var int|float
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*/
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protected $value;
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/**
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* New number literal.
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*
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* @param int|float $value
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*/
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public function __construct($value)
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{
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$this->value = $value;
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}
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/**
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* Get the value of this literal.
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*
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* @return int|float
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*/
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public function getValue()
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{
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return $this->value;
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}
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public static function isToken(string $stream): bool
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{
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return is_numeric($stream[0]);
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}
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public static function getToken(string &$stream): Token
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{
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$buffer = '';
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for ($i = 0; $i < strlen($stream); $i++)
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{
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if (preg_match('/^[0-9]$/', $stream[$i]))
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{
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$buffer .= $stream[$i];
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}
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else
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{
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break;
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}
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}
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$stream = substr($stream, strlen($buffer));
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if (stristr($buffer, '.'))
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{
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$buffer = (float)$buffer;
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}
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else
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{
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$buffer = (int)$buffer;
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}
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return new NumericLiteral($buffer);
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}
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/**
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* Get the value of this token.
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*
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* @param ?\App\Util\GraphNode[] $arguments
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* @return \App\Util\GraphNode|Token|scalar|null
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*/
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public function execute(?array $arguments = null)
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{
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return $this->getValue();
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}
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}
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