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<?php |
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/** |
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* @copyright Copyright (c) Flipbox Digital Limited |
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* @license https://github.com/flipboxfactory/twig-trigger/blob/master/LICENSE.md |
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* @link https://github.com/flipboxfactory/twig-trigger |
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*/ |
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namespace flipbox\twig\tokenparsers; |
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use flipbox\twig\nodes\TriggerNode; |
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use Twig_Error_Syntax; |
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use Twig_Node_Text; |
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use Twig_Token; |
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/** |
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* @author Flipbox Factory <[email protected]> |
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* @since 1.0.0 |
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*/ |
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class TriggerTokenParser extends \Twig_TokenParser |
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{ |
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/** |
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* @inheritdoc |
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*/ |
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public function getTag() |
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{ |
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return 'trigger'; |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function parse(Twig_Token $token) |
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{ |
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$line = $token->getLine(); |
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$parser = $this->parser; |
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$nodes = [ |
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'event' => $this->parser->getExpressionParser()->parseExpression() |
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]; |
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$variables = [ |
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'capture' => true |
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]; |
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// Look for value as an attribute |
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$variables['capture'] = $this->parseValueAttribute($nodes); |
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// Params 'with' |
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$variables['params'] = $this->parseWith(); |
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// Close out opening tag |
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$parser->getStream()->expect(Twig_Token::BLOCK_END_TYPE); |
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// Is there a closing tag? |
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if ($variables['capture']) { |
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$this->parseValueBetweenTags($nodes); |
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} |
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return new TriggerNode($nodes, $variables, $line, $this->getTag()); |
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} |
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/** |
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* @param array $nodes |
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* @return bool |
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* @throws Twig_Error_Syntax |
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*/ |
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protected function parseValueAttribute(array &$nodes): bool |
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{ |
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$parser = $this->parser; |
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$stream = $parser->getStream(); |
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$expressionParser = $this->parser->getExpressionParser(); |
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// Look for value as a param |
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if ($stream->nextIf(Twig_Token::NAME_TYPE, 'value')) { |
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$stream->expect(Twig_Token::OPERATOR_TYPE, '='); |
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$nodes['value'] = $expressionParser->parseExpression(); |
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return false; |
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} |
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return true; |
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} |
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/** |
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* @param array $nodes |
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* @throws Twig_Error_Syntax |
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*/ |
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protected function parseValueBetweenTags(array &$nodes) |
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{ |
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$parser = $this->parser; |
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$stream = $parser->getStream(); |
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$nodes['value'] = $parser->subparse(array($this, 'decideBlockEnd'), true); |
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$stream->expect(Twig_Token::BLOCK_END_TYPE); |
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} |
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/** |
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* @return null|Twig_Node_Text |
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* @throws Twig_Error_Syntax |
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*/ |
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protected function parseWith() |
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{ |
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$stream = $this->parser->getStream(); |
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$expressionParser = $this->parser->getExpressionParser(); |
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// Is there an options param? |
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if ($stream->test(Twig_Token::NAME_TYPE, 'with')) { |
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$stream->next(); |
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return $expressionParser->parseExpression(); |
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} |
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return null; |
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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 bool |
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*/ |
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public function decideBlockEnd(Twig_Token $token): bool |
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{ |
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return $token->test('end' . strtolower($this->getTag())); |
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} |
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} |
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flipboxfactory /
twig-trigger
