class ParseException

class ParseException extends RuntimeException {
    
    /**
     * @param string      $rawMessage The error message
     * @param int         $parsedLine The line where the error occurred
     * @param string|null $snippet    The snippet of code near the problem
     * @param string|null $parsedFile The file name where the error occurred
     */
    public function __construct(string $rawMessage, int $parsedLine = -1, ?string $snippet = null, ?string $parsedFile = null, ?\Throwable $previous = null) {
        $this->updateRepr();
        parent::__construct($this->message, 0, $previous);
    }
    
    /**
     * Gets the snippet of code near the error.
     */
    public function getSnippet() : string {
        return $this->snippet;
    }
    
    /**
     * Sets the snippet of code near the error.
     */
    public function setSnippet(string $snippet) : void {
        $this->snippet = $snippet;
        $this->updateRepr();
    }
    
    /**
     * Gets the filename where the error occurred.
     *
     * This method returns null if a string is parsed.
     */
    public function getParsedFile() : string {
        return $this->parsedFile;
    }
    
    /**
     * Sets the filename where the error occurred.
     */
    public function setParsedFile(string $parsedFile) : void {
        $this->parsedFile = $parsedFile;
        $this->updateRepr();
    }
    
    /**
     * Gets the line where the error occurred.
     */
    public function getParsedLine() : int {
        return $this->parsedLine;
    }
    
    /**
     * Sets the line where the error occurred.
     */
    public function setParsedLine(int $parsedLine) : void {
        $this->parsedLine = $parsedLine;
        $this->updateRepr();
    }
    private function updateRepr() : void {
        $this->message = $this->rawMessage;
        $dot = false;
        if (str_ends_with($this->message, '.')) {
            $this->message = substr($this->message, 0, -1);
            $dot = true;
        }
        if (null !== $this->parsedFile) {
            $this->message .= \sprintf(' in %s', json_encode($this->parsedFile, \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE));
        }
        if ($this->parsedLine >= 0) {
            $this->message .= \sprintf(' at line %d', $this->parsedLine);
        }
        if ($this->snippet) {
            $this->message .= \sprintf(' (near "%s")', $this->snippet);
        }
        if ($dot) {
            $this->message .= '.';
        }
    }

}