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

    public function fix(\SplFileInfo $file, Tokens $tokens)
    {
        $tokensAnalyzer = new TokensAnalyzer($tokens);
        // last and first tokens cannot be an operator
        for ($index = $tokens->count() - 2; $index >= 0; --$index) {
            if (!$tokensAnalyzer->isBinaryOperator($index)) {
                continue;
            }
            $isDeclare = $this->isDeclareStatement($tokens, $index);
            if (false !== $isDeclare) {
                $index = $isDeclare;
                // skip `declare(foo ==bar)`, see `declare_equal_normalize`
            } else {
                $this->fixWhiteSpaceAroundOperator($tokens, $index);
            }
            // previous of binary operator is now never an operator / previous of declare statement cannot be an operator
            --$index;
        }
        $this->runHelperFixers($file, $tokens);
    }