public function validateJSON()

in src/Facebook/InstantArticles/Transformer/Transformer.php [388:445]
57 lines of code
7 McCabe index (conditional complexity)

    public function validateJSON($json_file)
    {
        $configuration = json_decode($json_file, true);

        switch (json_last_error()) {
            case JSON_ERROR_NONE:
                break;
            case JSON_ERROR_DEPTH:
                $this->addWarning('Invalid JSON Rules: Maximum stack depth exceeded');
                $this->addLog(
                    TransformerLog::ERROR,
                    "Invalid JSON Rules: Maximum stack depth exceeded"
                );
                $configuration = '';
                break;
            case JSON_ERROR_STATE_MISMATCH:
                $this->addWarning('Invalid JSON Rules: Underflow or the modes mismatch');
                $this->addLog(
                    TransformerLog::ERROR,
                    "Invalid JSON Rules: Underflow or the modes mismatch"
                );
                $configuration = '';
                break;
            case JSON_ERROR_CTRL_CHAR:
                $this->addWarning('Invalid JSON Rules: Unexpected control character found');
                $this->addLog(
                    TransformerLog::ERROR,
                    "Invalid JSON Rules: Unexpected control character found"
                );
                $configuration = '';
                break;
            case JSON_ERROR_SYNTAX:
                $this->addWarning('Invalid JSON Rules: Syntax error, malformed JSON');
                $this->addLog(
                    TransformerLog::ERROR,
                    "Invalid JSON Rules: Syntax error, malformed JSON"
                );
                $configuration = '';
                break;
            case JSON_ERROR_UTF8:
                $this->addWarning('Invalid JSON Rules: Malformed UTF-8 characters, possibly incorrectly encoded');
                $this->addLog(
                    TransformerLog::ERROR,
                    "Invalid JSON Rules: Malformed UTF-8 characters, possibly incorrectly encoded"
                );
                $configuration = '';
                break;
            default:
                $this->addWarning('Invalid JSON Rules');
                $this->addLog(
                    TransformerLog::ERROR,
                    "Invalid JSON Rules"
                );
                $configuration = '';
                break;
        }
        return $configuration;
    }