protected function Twig_Lexer::getOperatorRegex in Translation template extractor 7.2

Same name and namespace in other branches

1. 6.3 vendor/Twig/Lexer.php \Twig_Lexer::getOperatorRegex()
2. 7.3 vendor/Twig/Lexer.php \Twig_Lexer::getOperatorRegex()

1 call to Twig_Lexer::getOperatorRegex()

Twig_Lexer::__construct in vendor/Twig/Lexer.php

File

vendor/Twig/Lexer.php, line 360

Class

Twig_Lexer

Lexes a template string.

Code

protected function getOperatorRegex() {
  $operators = array_merge(array(
    '=',
  ), array(
    'not',
    '-',
    '+',
  ), array(
    'or',
    'and',
    'b-or',
    'b-xor',
    'b-and',
    '==',
    '!=',
    '<',
    '>',
    '>=',
    '<=',
    'not in',
    'in',
    'matches',
    'starts with',
    'ends with',
    '..',
    '+',
    '-',
    '~',
    '*',
    '/',
    '//',
    '%',
    'is',
    'is not',
    '**',
  ));
  $operators = array_combine($operators, array_map('strlen', $operators));
  arsort($operators);
  $regex = array();
  foreach ($operators as $operator => $length) {

    // an operator that ends with a character must be followed by
    // a whitespace or a parenthesis
    if (ctype_alpha($operator[$length - 1])) {
      $r = preg_quote($operator, '/') . '(?=[\\s()])';
    }
    else {
      $r = preg_quote($operator, '/');
    }

    // an operator with a space can be any amount of whitespaces
    $r = preg_replace('/\\s+/', '\\s+', $r);
    $regex[] = $r;
  }
  return '/' . implode('|', $regex) . '/A';
}