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<?php |
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namespace MewesK\TwigSpreadsheetBundle\Twig\TokenParser; |
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/** |
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* Class BaseTokenParser. |
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*/ |
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abstract class BaseTokenParser extends \Twig_TokenParser |
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{ |
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/** |
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* @var int |
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*/ |
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const PARAMETER_TYPE_ARRAY = 0; |
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/** |
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* @var int |
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*/ |
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const PARAMETER_TYPE_VALUE = 1; |
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/** |
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* @var array |
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*/ |
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private $attributes; |
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/** |
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* BaseTokenParser constructor. |
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* |
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* @param array $attributes optional attributes for the corresponding node |
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*/ |
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public function __construct(array $attributes = []) |
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{ |
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$this->attributes = $attributes; |
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} |
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/** |
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* @param \Twig_Token $token |
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* |
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* @return array |
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*/ |
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public function configureParameters(\Twig_Token $token): array |
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{ |
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return []; |
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} |
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/** |
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* @return array |
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*/ |
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public function getAttributes(): array |
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{ |
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return $this->attributes; |
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} |
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/** |
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* The class name of the corresponding node. |
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* |
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* @return string |
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*/ |
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abstract public function getNode(): string; |
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/** |
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* @return bool |
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*/ |
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public function hasBody(): bool |
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{ |
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return true; |
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} |
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/** |
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* @param \Twig_Token $token |
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* |
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* @throws \Twig_Error_Syntax |
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* @throws \InvalidArgumentException |
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* |
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* @return \Twig_node |
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*/ |
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public function parse(\Twig_Token $token) |
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{ |
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// parse attributes |
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$nodes = $this->parseParameters($this->configureParameters($token)); |
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// parse body |
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if ($this->hasBody()) { |
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$nodes['body'] = $this->parseBody(); |
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} |
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// return node |
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$nodeClass = $this->getNode(); |
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return new $nodeClass($nodes, $this->getAttributes(), $token->getLine(), $this->getTag()); |
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} |
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/** |
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* @param array $parameterConfiguration |
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* |
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* @throws \InvalidArgumentException |
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* @throws \Twig_Error_Syntax |
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* |
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* @return \Twig_Node_Expression[] |
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*/ |
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private function parseParameters(array $parameterConfiguration = []): array |
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{ |
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// parse expressions |
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$expressions = []; |
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while (!$this->parser->getStream()->test(\Twig_Token::BLOCK_END_TYPE)) { |
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$expressions[] = $this->parser->getExpressionParser()->parseExpression(); |
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} |
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// end of expressions |
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$this->parser->getStream()->expect(\Twig_Token::BLOCK_END_TYPE); |
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// map expressions to parameters |
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$parameters = []; |
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foreach ($parameterConfiguration as $parameterName => $parameterOptions) { |
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// try mapping expression |
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$expression = reset($expressions); |
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if ($expression !== false) { |
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switch ($parameterOptions['type']) { |
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case self::PARAMETER_TYPE_ARRAY: |
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// check if expression is valid array |
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$valid = $expression instanceof \Twig_Node_Expression_Array; |
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break; |
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case self::PARAMETER_TYPE_VALUE: |
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// check if expression is valid value |
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$valid = !($expression instanceof \Twig_Node_Expression_Array); |
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break; |
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default: |
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throw new \InvalidArgumentException('Invalid parameter type'); |
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} |
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if ($valid) { |
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// set expression as parameter and remove it from expressions list |
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$parameters[$parameterName] = array_shift($expressions); |
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continue; |
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} |
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} |
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// set default as parameter otherwise or throw exception if default is false |
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if ($parameterOptions['default'] === false) { |
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throw new \Twig_Error_Syntax('A required parameter is missing'); |
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} |
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$parameters[$parameterName] = $parameterOptions['default']; |
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} |
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if (count($expressions) > 0) { |
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throw new \Twig_Error_Syntax('Too many parameters'); |
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} |
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return $parameters; |
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} |
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/** |
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* @return \Twig_Node |
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*/ |
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private function parseBody(): \Twig_Node |
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{ |
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// parse body |
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$body = $this->parser->subparse(function (\Twig_Token $token) { |
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return $token->test('end'.$this->getTag()); |
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}, |
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true |
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); |
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// end of body |
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$this->parser->getStream()->expect(\Twig_Token::BLOCK_END_TYPE); |
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return $body; |
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} |
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} |
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