Flow\JSONPath\JSONPathLexer::parseExpression PHP Метод

    public function parseExpression()
    {
        $tokens = $this->parseExpressionTokens();
        return $tokens;
    }

 /**
  * @param $expression
  * @return array
  * @throws \Exception
  */
 public function parseTokens($expression)
 {
     $cacheKey = md5($expression);
     if (isset(static::$tokenCache[$cacheKey])) {
         return static::$tokenCache[$cacheKey];
     }
     $lexer = new JSONPathLexer($expression);
     $tokens = $lexer->parseExpression();
     static::$tokenCache[$cacheKey] = $tokens;
     return $tokens;
 }