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<?php |
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/* @description Transformation Style Sheets - Revolutionising PHP templating * |
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* @author Tom Butler [email protected] * |
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* @copyright 2017 Tom Butler <[email protected]> | https://r.je/ * |
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* @license http://www.opensource.org/licenses/bsd-license.php BSD License * |
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* @version 1.2 */ |
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namespace Transphporm\SheetLoader; |
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//Separates out TSS file loading/caching from parsing |
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class SheetLoader { |
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private $tss; |
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private $filePath; |
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private $time; |
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private $import = []; |
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public function __construct(\Transphporm\Cache $cache, \Transphporm\FilePath $filePath, TSSRules $tss, $time) { |
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$this->cache = $cache; |
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$this->filePath = $filePath; |
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$this->tss = $tss; |
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$this->time = $time ?? time(); |
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} |
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//Allows controlling whether any updates are required to the template |
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//e.g. return false |
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// 1. If all update-frequencies haven't expired |
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// 2. If the data hasn't changed since the last run |
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//If this function returns false, the rendered template is sent straight from the cache skipping 99% of transphporm's code |
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public function updateRequired($data) { |
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return $this->tss->updateRequired($data); |
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} |
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public function addImport($import) { |
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$this->filePath->addPath(dirname(realpath($this->filePath->getFilePath($import)))); |
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$this->import[] = $import; |
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} |
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public function setCacheKey($tokens) { |
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$newTokens = []; |
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foreach ($tokens as $token) { |
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if ($token['type'] == \Transphporm\Parser\Tokenizer::NAME && $token['value'] == 'data') { |
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$tokens->next(); |
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$newTokens = array_merge($newTokens, iterator_to_array($tokens->current()['value'])); |
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} |
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else $newTokens[] = $token; |
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} |
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$this->tss->setCacheKey(new \Transphporm\Parser\Tokens($newTokens)); |
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} |
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public function getCacheKey($data) { |
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return $this->tss->getCacheKey($data); |
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} |
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public function processRules($template, \Transphporm\Config $config) { |
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$rules = $this->getRules($config->getCssToXpath(), $config->getValueParser()); |
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usort($rules, [$this, 'sortRules']); |
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foreach ($rules as $rule) { |
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if ($rule->shouldRun($this->time)) $this->executeTssRule($rule, $template, $config); |
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} |
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//if (is_file($this->tss)) $this->write($this->tss, $rules, $this->import); |
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$this->tss->write($rules, $this->import); |
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} |
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//Load the TSS |
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public function getRules($cssToXpath, $valueParser, $indexStart = 0) { |
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return $this->tss->getRules($cssToXpath, $valueParser, $this, $indexStart); |
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} |
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//Process a TSS rule e.g. `ul li {content: "foo"; format: bar} |
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private function executeTssRule($rule, $template, $config) { |
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$rule->touch(); |
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$pseudoMatcher = $config->createPseudoMatcher($rule->pseudo); |
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$hook = new \Transphporm\Hook\PropertyHook($rule->properties, $config->getLine(), $rule->file, $rule->line, $pseudoMatcher, $config->getValueParser(), $config->getFunctionSet(), $config->getFilePath()); |
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$config->loadProperties($hook); |
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$template->addHook($rule->query, $hook); |
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} |
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private function sortRules($a, $b) { |
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//If they have the same depth, compare on index |
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if ($a->query === $b->query) return $this->sortPseudo($a, $b); |
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if ($a->depth === $b->depth) $property = 'index'; |
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else $property = 'depth'; |
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return ($a->$property < $b->$property) ? -1 : 1; |
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} |
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private function sortPseudo($a, $b) { |
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return count($a->pseudo) > count($b->pseudo) ? 1 : -1; |
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} |
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} |
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Level-2 /
Transphporm
Loading history...
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: