64 lines
1.6 KiB
PHP
64 lines
1.6 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Symfony package.
|
|
*
|
|
* (c) Fabien Potencier <fabien@symfony.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Symfony\Component\ExpressionLanguage;
|
|
|
|
/**
|
|
* Represents a Token.
|
|
*
|
|
* @author Fabien Potencier <fabien@symfony.com>
|
|
*/
|
|
class Token
|
|
{
|
|
public $value;
|
|
public $type;
|
|
public $cursor;
|
|
|
|
public const EOF_TYPE = 'end of expression';
|
|
public const NAME_TYPE = 'name';
|
|
public const NUMBER_TYPE = 'number';
|
|
public const STRING_TYPE = 'string';
|
|
public const OPERATOR_TYPE = 'operator';
|
|
public const PUNCTUATION_TYPE = 'punctuation';
|
|
|
|
/**
|
|
* @param string $type The type of the token (self::*_TYPE)
|
|
* @param string|int|float|null $value The token value
|
|
* @param int $cursor The cursor position in the source
|
|
*/
|
|
public function __construct(string $type, $value, ?int $cursor)
|
|
{
|
|
$this->type = $type;
|
|
$this->value = $value;
|
|
$this->cursor = $cursor;
|
|
}
|
|
|
|
/**
|
|
* Returns a string representation of the token.
|
|
*
|
|
* @return string A string representation of the token
|
|
*/
|
|
public function __toString()
|
|
{
|
|
return sprintf('%3d %-11s %s', $this->cursor, strtoupper($this->type), $this->value);
|
|
}
|
|
|
|
/**
|
|
* Tests the current token for a type and/or a value.
|
|
*
|
|
* @return bool
|
|
*/
|
|
public function test(string $type, string $value = null)
|
|
{
|
|
return $this->type === $type && (null === $value || $this->value == $value);
|
|
}
|
|
}
|