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<?php

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* This file is part of Twig.

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* (c) Fabien Potencier

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* (c) Armin Ronacher

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* For the full copyright and license information, please view the LICENSE

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* file that was distributed with this source code.

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namespace WPML\Core\Twig;

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use WPML\Core\Twig\Error\SyntaxError;

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/**

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* Represents a token stream.

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* @final

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* @author Fabien Potencier <fabien@symfony.com>

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class TokenStream

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{

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protected $tokens;

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protected $current = 0;

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protected $filename;

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private $source;

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/**

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* @param array $tokens An array of tokens

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* @param string|null $name The name of the template which tokens are associated with

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* @param string|null $source The source code associated with the tokens

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public function __construct(array $tokens, $name = null, $source = null)

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{

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if (!$name instanceof \WPML\Core\Twig\Source) {

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if (null !== $name || null !== $source) {

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@\trigger_error(\sprintf('Passing a string as the $name argument of %s() is deprecated since version 1.27. Pass a \\Twig\\Source instance instead.', __METHOD__), \E_USER_DEPRECATED);

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}

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$this->source = new \WPML\Core\Twig\Source($source, $name);

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} else {

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$this->source = $name;

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}

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$this->tokens = $tokens;

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// deprecated, not used anymore, to be removed in 2.0

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$this->filename = $this->source->getName();

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}

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public function __toString()

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{

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return \implode("\n", $this->tokens);

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}

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public function injectTokens(array $tokens)

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{

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$this->tokens = \array_merge(\array_slice($this->tokens, 0, $this->current), $tokens, \array_slice($this->tokens, $this->current));

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}

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/**

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* Sets the pointer to the next token and returns the old one.

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* @return Token

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public function next()

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{

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if (!isset($this->tokens[++$this->current])) {

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throw new \WPML\Core\Twig\Error\SyntaxError('Unexpected end of template.', $this->tokens[$this->current - 1]->getLine(), $this->source);

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}

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return $this->tokens[$this->current - 1];

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}

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/**

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* Tests a token, sets the pointer to the next one and returns it or throws a syntax error.

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* @return Token|null The next token if the condition is true, null otherwise

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public function nextIf($primary, $secondary = null)

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{

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if ($this->tokens[$this->current]->test($primary, $secondary)) {

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return $this->next();

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}

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}

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/**

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* Tests a token and returns it or throws a syntax error.

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* @return Token

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public function expect($type, $value = null, $message = null)

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{

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$token = $this->tokens[$this->current];

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if (!$token->test($type, $value)) {

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$line = $token->getLine();

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throw new \WPML\Core\Twig\Error\SyntaxError(\sprintf('%sUnexpected token "%s"%s ("%s" expected%s).', $message ? $message . '. ' : '', \WPML\Core\Twig\Token::typeToEnglish($token->getType()), $token->getValue() ? \sprintf(' of value "%s"', $token->getValue()) : '', \WPML\Core\Twig\Token::typeToEnglish($type), $value ? \sprintf(' with value "%s"', $value) : ''), $line, $this->source);

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}

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$this->next();

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return $token;

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}

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/**

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* Looks at the next token.

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* @param int $number

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* @return Token

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public function look($number = 1)

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{

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if (!isset($this->tokens[$this->current + $number])) {

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throw new \WPML\Core\Twig\Error\SyntaxError('Unexpected end of template.', $this->tokens[$this->current + $number - 1]->getLine(), $this->source);

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}

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return $this->tokens[$this->current + $number];

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}

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/**

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* Tests the current token.

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* @return bool

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public function test($primary, $secondary = null)

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{

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return $this->tokens[$this->current]->test($primary, $secondary);

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}

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/**

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* Checks if end of stream was reached.

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* @return bool

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public function isEOF()

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{

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return \WPML\Core\Twig\Token::EOF_TYPE === $this->tokens[$this->current]->getType();

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}

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/**

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* @return Token

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public function getCurrent()

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{

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return $this->tokens[$this->current];

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}

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/**

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* Gets the name associated with this stream (null if not defined).

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* @return string|null

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* @deprecated since 1.27 (to be removed in 2.0)

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public function getFilename()

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{

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@\trigger_error(\sprintf('The %s() method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), \E_USER_DEPRECATED);

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return $this->source->getName();

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}

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/**

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* Gets the source code associated with this stream.

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* @return string

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* @internal Don't use this as it might be empty depending on the environment configuration

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* @deprecated since 1.27 (to be removed in 2.0)

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public function getSource()

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{

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@\trigger_error(\sprintf('The %s() method is deprecated since version 1.27 and will be removed in 2.0. Use getSourceContext() instead.', __METHOD__), \E_USER_DEPRECATED);

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return $this->source->getCode();

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}

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/**

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* Gets the source associated with this stream.

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* @return Source

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* @internal

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public function getSourceContext()

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{

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return $this->source;

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}

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}

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\class_alias('WPML\\Core\\Twig\\TokenStream', 'WPML\\Core\\Twig_TokenStream');

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