PhpCsFixer\Fixer\Operator\TernaryOperatorSpacesFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        $ternaryLevel = 0;
        foreach ($tokens as $index => $token) {
            if ($token->isArray()) {
                continue;
            }
            if ($token->equals('?')) {
                ++$ternaryLevel;
                $nextNonWhitespaceIndex = $tokens->getNextNonWhitespace($index);
                $nextNonWhitespaceToken = $tokens[$nextNonWhitespaceIndex];
                if ($nextNonWhitespaceToken->equals(':')) {
                    // for `$a ?: $b` remove spaces between `?` and `:`
                    if ($tokens[$index + 1]->isWhitespace()) {
                        $tokens[$index + 1]->clear();
                    }
                } else {
                    // for `$a ? $b : $c` ensure space after `?`
                    $this->ensureWhitespaceExistence($tokens, $index + 1, true);
                }
                // for `$a ? $b : $c` ensure space before `?`
                $this->ensureWhitespaceExistence($tokens, $index - 1, false);
                continue;
            }
            if ($ternaryLevel && $token->equals(':')) {
                // for `$a ? $b : $c` ensure space after `:`
                $this->ensureWhitespaceExistence($tokens, $index + 1, true);
                $prevNonWhitespaceToken = $tokens[$tokens->getPrevNonWhitespace($index)];
                if (!$prevNonWhitespaceToken->equals('?')) {
                    // for `$a ? $b : $c` ensure space before `:`
                    $this->ensureWhitespaceExistence($tokens, $index - 1, false);
                }
                --$ternaryLevel;
            }
        }
    }