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<?php |
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/** |
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* ExportTrait |
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* |
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* @package php-deferred-callchain |
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* @author Jean Claveau |
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*/ |
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namespace JClaveau\Async; |
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/** |
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* Trait gathering support of export functions like toString() or |
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* jsonSerialize() |
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*/ |
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trait ExportTrait |
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{ |
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/** |
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* For implementing JsonSerializable interface. |
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* |
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* @see https://secure.php.net/manual/en/jsonserializable.jsonserialize.php |
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*/ |
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public function jsonSerialize() |
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{ |
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return $this->stack; |
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} |
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/** |
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* Outputs the PHP code producing the current call chain while it's casted |
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* as a string. |
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* |
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* @return string The PHP code corresponding to this call chain |
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*/ |
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public function __toString() |
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{ |
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return $this->toString(); |
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} |
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/** |
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* Outputs the PHP code producing the current call chain while it's casted |
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* as a string. |
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* |
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* @return string The PHP code corresponding to this call chain |
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*/ |
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protected function toString(array $options=[]) |
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{ |
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$target = isset($options['target']) ? $options['target'] : $this->expectedTarget; |
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$string = '(new ' . get_called_class(); |
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$target && $string .= '(' . static::varExport($target, ['short_objects']) . ')'; |
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$string .= ')'; |
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foreach ($this->stack as $i => $call) { |
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if (isset($call['method'])) { |
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$string .= '->'; |
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$string .= $call['method'].'('; |
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$string .= implode(', ', array_map(function($argument) { |
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return static::varExport($argument, ['short_objects']); |
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}, $call['arguments'])); |
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$string .= ')'; |
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} |
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else { |
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$string .= '[' . static::varExport($call['entry'], ['short_objects']) . ']'; |
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} |
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if (! empty($options['limit']) && $options['limit'] == $i) { |
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break; |
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} |
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} |
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return $string; |
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} |
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/** |
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* Enhanced var_export() required for dumps. |
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* |
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* @param mixed $variable |
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* @param array $options max_length | alias_instances |
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* @return string The PHP code of the variable |
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*/ |
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protected static function varExport($variable, array $options=[]) |
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{ |
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$options['max_length'] = isset($options['max_length']) ? $options['max_length'] : 512; |
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$options['short_objects'] = ! empty($options['short_objects']) || in_array('short_objects', $options); |
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$export = var_export($variable, true); |
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if ($options['short_objects']) { |
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if (is_object($variable)) { |
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$export = ' ' . get_class($variable) . ' #' . spl_object_id($variable) . ' '; |
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} |
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} |
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if (strlen($export) > $options['max_length']) { |
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if (is_object($variable)) { |
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$export = get_class($variable) . ' #' . spl_object_id($variable); |
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} |
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elseif (is_string($variable)) { |
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$keep_length = floor(($options['max_length'] - 5) / 2); |
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$export = substr($variable, 0, (int) $keep_length) |
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. ' ... ' |
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. substr($variable, -$keep_length) |
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; |
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} |
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} |
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return $export; |
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} |
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/**/ |
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} |
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jclaveau /
php-deferred-callchain
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