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<?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 WPML\Core\Twig; use WPML\Core\Twig\Error\SyntaxError; /** * Represents a token stream. * * @final * * @author Fabien Potencier <fabien@symfony.com> */ class TokenStream { protected $tokens; protected $current = 0; protected $filename; private $source; /** * @param array $tokens An array of tokens * @param string|null $name The name of the template which tokens are associated with * @param string|null $source The source code associated with the tokens */ public function __construct(array $tokens, $name = null, $source = null) { if (!$name instanceof \WPML\Core\Twig\Source) { if (null !== $name || null !== $source) { @\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); } $this->source = new \WPML\Core\Twig\Source($source, $name); } else { $this->source = $name; } $this->tokens = $tokens; // deprecated, not used anymore, to be removed in 2.0 $this->filename = $this->source->getName(); } public function __toString() { return \implode("\n", $this->tokens); } public function injectTokens(array $tokens) { $this->tokens = \array_merge(\array_slice($this->tokens, 0, $this->current), $tokens, \array_slice($this->tokens, $this->current)); } /** * Sets the pointer to the next token and returns the old one. * * @return Token */ public function next() { if (!isset($this->tokens[++$this->current])) { throw new \WPML\Core\Twig\Error\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, $secondary = null) { if ($this->tokens[$this->current]->test($primary, $secondary)) { return $this->next(); } } /** * Tests a token and returns it or throws a syntax error. * * @return Token */ public function expect($type, $value = null, $message = null) { $token = $this->tokens[$this->current]; if (!$token->test($type, $value)) { $line = $token->getLine(); 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); } $this->next(); return $token; } /** * Looks at the next token. * * @param int $number * * @return Token */ public function look($number = 1) { if (!isset($this->tokens[$this->current + $number])) { throw new \WPML\Core\Twig\Error\SyntaxError('Unexpected end of template.', $this->tokens[$this->current + $number - 1]->getLine(), $this->source); } return $this->tokens[$this->current + $number]; } /** * Tests the current token. * * @return bool */ public function test($primary, $secondary = null) { return $this->tokens[$this->current]->test($primary, $secondary); } /** * Checks if end of stream was reached. * * @return bool */ public function isEOF() { return \WPML\Core\Twig\Token::EOF_TYPE === $this->tokens[$this->current]->getType(); } /** * @return Token */ public function getCurrent() { return $this->tokens[$this->current]; } /** * Gets the name associated with this stream (null if not defined). * * @return string|null * * @deprecated since 1.27 (to be removed in 2.0) */ public function getFilename() { @\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); return $this->source->getName(); } /** * Gets the source code associated with this stream. * * @return string * * @internal Don't use this as it might be empty depending on the environment configuration * * @deprecated since 1.27 (to be removed in 2.0) */ public function getSource() { @\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); return $this->source->getCode(); } /** * Gets the source associated with this stream. * * @return Source * * @internal */ public function getSourceContext() { return $this->source; } } \class_alias('WPML\\Core\\Twig\\TokenStream', 'WPML\\Core\\Twig_TokenStream');
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