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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\Hook; |
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/** Handles format: foo bar properties in the stylesheet */ |
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class Formatter { |
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private $formatters = []; |
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public function register($formatter) { |
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$this->formatters[] = $formatter; |
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} |
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public function format($value, $rules) { |
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if (!isset($rules['format'])) return $value; |
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$tokens = $rules['format']; |
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$functionName = $tokens->from(\Transphporm\Parser\Tokenizer::NAME, true)->read(); |
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$options = []; |
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foreach (new \Transphporm\Parser\TokenFilterIterator($tokens->from(\Transphporm\Parser\Tokenizer::NAME), |
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[\Transphporm\Parser\Tokenizer::WHITESPACE]) as $token) { |
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$options[] = $token['value']; |
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} |
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try { |
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return $this->processFormat($options, $functionName, $value); |
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} |
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catch (\Exception $e) { |
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throw new \Transphporm\RunException(\Transphporm\Exception::FORMATTER, $functionName, $e); |
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} |
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} |
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public function runOnImmutableElements(): bool { |
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return false; |
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} |
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//TODO: Abstract all error reporting externally with a method for turning it on/off |
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private function assert($condition, $error) { |
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if (!$condition) throw new \Exception($error); |
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} |
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private function processFormat($format, $functionName, $value) { |
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$functionExists = false; |
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foreach ($value as &$val) { |
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foreach ($this->formatters as $formatter) { |
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if (is_callable([$formatter, $functionName])) { |
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$val = call_user_func_array([$formatter, $functionName], array_merge([$val], $format)); |
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$functionExists = true; |
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} |
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} |
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} |
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$this->assert($functionExists, "Formatter '$functionName' does not exist"); |
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return $value; |
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} |
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} |
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Level-2 /
Transphporm
