PhpCsFixer\Fixer\Whitespace\NoSpacesAroundOffsetFixer::fix PHP Method

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        foreach ($tokens as $index => $token) {
            if (!$token->equalsAny(array('[', array(CT::T_ARRAY_INDEX_CURLY_BRACE_OPEN)))) {
                continue;
            }
            if (in_array('inside', $this->configuration, true)) {
                if ($token->equals('[')) {
                    $endIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_INDEX_SQUARE_BRACE, $index);
                } else {
                    $endIndex = $tokens->findBlockEnd(Tokens::BLOCK_TYPE_ARRAY_INDEX_CURLY_BRACE, $index);
                }
                // remove space after opening `[` or `{`
                $this->removeWhitespaceToken($tokens[$index + 1]);
                // remove space before closing `]` or `}`
                $this->removeWhitespaceToken($tokens[$endIndex - 1]);
            }
            if (in_array('outside', $this->configuration, true)) {
                $prevNonWhitespaceIndex = $tokens->getPrevNonWhitespace($index);
                if ($tokens[$prevNonWhitespaceIndex]->isComment()) {
                    continue;
                }
                $tokens->removeLeadingWhitespace($index);
            }
        }
    }