<?php

namespace WikiPEG;

class SyntaxError extends \Exception implements \JsonSerializable {
  public $expected, $found, $location;

  /**
   * @param string $message
   * @param Expectation[] $expected
   * @param string|null $found
   * @param LocationRange $location
   */
  public function __construct(string $message, array $expected, $found, LocationRange $location) {
    parent::__construct( $message );
    $this->expected = $expected;
    $this->found    = $found;
    $this->location = $location;
  }

  /**
   * JSON serialization similar to the JavaScript SyntaxError, for testing
   * @return array
   */
  public function jsonSerialize() {
    return [
      'name' => 'SyntaxError',
      'message' => $this->message,
      'expected' => $this->expected,
      'found' => $this->found,
      'location' => $this->location
    ];
  }
}