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<?php |
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/* |
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* |
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* (c) Yaroslav Honcharuk <[email protected]> |
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* |
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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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*/ |
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namespace Yarhon\RouteGuardBundle\Twig\TokenParser; |
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use Twig\Token; |
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use Twig\Parser; |
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use Twig\TokenStream; |
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use Twig\Node\Node; |
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use Twig_Error_Syntax as SyntaxError; // Workaround for PhpStorm to recognise type hints. Namespaced name: Twig\Error\SyntaxError |
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use Yarhon\RouteGuardBundle\Twig\Node\RouteExpression; |
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/** |
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* @author Yaroslav Honcharuk <[email protected]> |
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*/ |
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class RouteExpressionParser |
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{ |
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/** |
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* @var Parser; |
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*/ |
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private $parser; |
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/** |
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* @param Parser $parser |
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*/ |
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public function setParser(Parser $parser) |
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{ |
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$this->parser = $parser; |
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} |
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/** |
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* @param Token $token |
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* |
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* @return RouteExpression |
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* |
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* @throws SyntaxError |
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*/ |
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public function parse(Token $token) |
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{ |
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$routeContextArguments = $this->parseRouteContextArguments(); |
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$expression = new RouteExpression($routeContextArguments, $token->getLine()); |
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if ($generateAs = $this->parseGenerateAs()) { |
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$expression->setGenerateAs(...$generateAs); |
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} |
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return $expression; |
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} |
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private function parseRouteContextArguments() |
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{ |
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$stream = $this->parser->getStream(); |
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$line = $stream->getCurrent()->getLine(); |
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$arguments = []; |
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while (!$stream->test(Token::BLOCK_END_TYPE) && !$stream->test('as')) { |
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if (count($arguments)) { |
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$stream->expect(Token::PUNCTUATION_TYPE, ',', 'Arguments must be separated by a comma'); |
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} |
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$arguments[] = $this->parser->getExpressionParser()->parseExpression(); |
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} |
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return new Node($arguments, [], $line); |
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} |
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private function parseGenerateAs() |
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{ |
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$stream = $this->parser->getStream(); |
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$generateAs = []; |
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if ($stream->nextIf('as')) { |
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// $functionName = $stream->expect(Token::NAME_TYPE, ['url', 'path'])->getValue(); |
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// Workaround for bug in Twig_TokenStream::expect() method. See self::streamExpect(). |
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$message = '"name" expected with value "url" or "path"'; |
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$referenceType = $this->streamExpect($stream, Token::NAME_TYPE, ['url', 'path'], $message)->getValue(); |
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$generateAs[] = $referenceType; |
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if ($stream->test(['absolute', 'relative'])) { |
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$relative = 'absolute' !== $stream->getCurrent()->getValue(); |
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$generateAs[] = $relative; |
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$stream->next(); |
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} |
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} |
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return $generateAs; |
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} |
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/** |
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* Workaround for bug inside \Twig_TokenStream::expect. |
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* In case of invalid template syntax, when exception is thrown, if type and/or value argument is an array, |
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* an "Array to string conversion" error happens: |
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* - for type because of: Twig_Token::typeToEnglish($type) |
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* - for value because of: sprintf(' with value "%s"', $value). |
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* |
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* @param TokenStream $stream |
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* @param array|int $type |
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* @param array|string|null $values |
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* @param string|null $message |
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* |
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* @return Token |
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* |
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* @throws SyntaxError |
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*/ |
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private function streamExpect(TokenStream $stream, $type, $values = null, $message = null) |
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{ |
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$token = $stream->getCurrent(); |
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if (!$token->test($type, $values)) { |
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if ($message) { |
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$message = ' ('.$message.')'; |
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} |
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throw new SyntaxError(sprintf('Unexpected token "%s" of value "%s"%s.', |
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Token::typeToEnglish($token->getType()), $token->getValue(), $message), |
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$token->getLine(), |
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$stream->getSourceContext() |
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); |
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} |
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$stream->next(); |
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return $token; |
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} |
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} |
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yarhon /
RouteGuardBundle
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