PhpCsFixer\Fixer\Basic\BracesFixer::fixMissingControlBraces PHP Method

    private function fixMissingControlBraces(Tokens $tokens)
    {
        $controlTokens = $this->getControlTokens();
        for ($index = $tokens->count() - 1; 0 <= $index; --$index) {
            $token = $tokens[$index];
            if (!$token->isGivenKind($controlTokens)) {
                continue;
            }
            $parenthesisEndIndex = $this->findParenthesisEnd($tokens, $index);
            $tokenAfterParenthesis = $tokens[$tokens->getNextMeaningfulToken($parenthesisEndIndex)];
            // if Token after parenthesis is { then we do not need to insert brace, but to fix whitespace before it
            if ($tokenAfterParenthesis->equals('{')) {
                $tokens->ensureWhitespaceAtIndex($parenthesisEndIndex + 1, 0, ' ');
                continue;
            }
            // do not add braces for cases:
            // - structure without block, e.g. while ($iter->next());
            // - structure with block, e.g. while ($i) {...}, while ($i) : {...} endwhile;
            if ($tokenAfterParenthesis->equalsAny(array(';', '{', ':'))) {
                continue;
            }
            $statementEndIndex = $this->findStatementEnd($tokens, $parenthesisEndIndex);
            // insert closing brace
            $tokens->insertAt($statementEndIndex + 1, array(new Token(array(T_WHITESPACE, ' ')), new Token('}')));
            // insert missing `;` if needed
            if (!$tokens[$statementEndIndex]->equalsAny(array(';', '}'))) {
                $tokens->insertAt($statementEndIndex + 1, new Token(';'));
            }
            // insert opening brace
            $tokens->insertAt($parenthesisEndIndex + 1, new Token('{'));
            $tokens->ensureWhitespaceAtIndex($parenthesisEndIndex + 1, 0, ' ');
        }
    }