Файл: upload/core/vendor/twig/twig/src/TokenStream.php
Строк: 182
<?php
/*
* This file is part of Twig.
*
* (c) Fabien Potencier
* (c) Armin Ronacher
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Twig;
use TwigErrorSyntaxError;
/**
* Represents a token stream.
*
* @author Fabien Potencier <fabien@symfony.com>
*/
final class TokenStream
{
private $current = 0;
public function __construct(
private array $tokens,
private ?Source $source = null,
) {
if (null === $this->source) {
trigger_deprecation('twig/twig', '3.16', sprintf('Not passing a "%s" object to "%s" constructor is deprecated.', Source::class, __CLASS__));
$this->source = new Source('', '');
}
}
public function __toString(): string
{
return implode("n", $this->tokens);
}
/**
* @return void
*/
public function injectTokens(array $tokens)
{
$this->tokens = array_merge(array_slice($this->tokens, 0, $this->current), $tokens, array_slice($this->tokens, $this->current));
}
/**
* Sets the pointer to the next token and returns the old one.
*/
public function next(): Token
{
if (!isset($this->tokens[++$this->current])) {
throw new SyntaxError('Unexpected end of template.', $this->tokens[$this->current - 1]->getLine(), $this->source);
}
return $this->tokens[$this->current - 1];
}
/**
* Tests a token, sets the pointer to the next one and returns it or throws a syntax error.
*
* @return Token|null The next token if the condition is true, null otherwise
*/
public function nextIf($primary, $secondary = null)
{
return $this->tokens[$this->current]->test($primary, $secondary) ? $this->next() : null;
}
/**
* Tests a token and returns it or throws a syntax error.
*/
public function expect($type, $value = null, ?string $message = null): Token
{
$token = $this->tokens[$this->current];
if (!$token->test($type, $value)) {
$line = $token->getLine();
throw new SyntaxError(sprintf('%sUnexpected token "%s"%s ("%s" expected%s).',
$message ? $message.'. ' : '',
$token->toEnglish(),
$token->getValue() ? sprintf(' of value "%s"', $token->getValue()) : '',
Token::typeToEnglish($type), $value ? sprintf(' with value "%s"', $value) : ''),
$line,
$this->source
);
}
$this->next();
return $token;
}
/**
* Looks at the next token.
*/
public function look(int $number = 1): Token
{
if (!isset($this->tokens[$this->current + $number])) {
throw new SyntaxError('Unexpected end of template.', $this->tokens[$this->current + $number - 1]->getLine(), $this->source);
}
return $this->tokens[$this->current + $number];
}
/**
* Tests the current token.
*/
public function test($primary, $secondary = null): bool
{
return $this->tokens[$this->current]->test($primary, $secondary);
}
/**
* Checks if end of stream was reached.
*/
public function isEOF(): bool
{
return $this->tokens[$this->current]->test(Token::EOF_TYPE);
}
public function getCurrent(): Token
{
return $this->tokens[$this->current];
}
public function getSourceContext(): Source
{
return $this->source;
}
}