src/Tokenizer/Transformer/TypeAlternationTransformer.php
public function process(Tokens $tokens, Token $token, $index)
    {
        if (!$token->equals('|')) {
            return;
        }

        $prevIndex = $tokens->getPrevMeaningfulToken($index);
        $prevToken = $tokens[$prevIndex];

        if (!$prevToken->isGivenKind(T_STRING)) {
            return;
        }

        do {
            $prevIndex = $tokens->getPrevMeaningfulToken($prevIndex);
            if (null === $prevIndex) {
                break;
            }

            $prevToken = $tokens[$prevIndex];

            if ($prevToken->isGivenKind([T_NS_SEPARATOR, T_STRING])) {
                continue;
            }

            if (
                $prevToken->isGivenKind(CT::T_TYPE_ALTERNATION)
                || (
                    $prevToken->equals('(')
                    && $tokens[$tokens->getPrevMeaningfulToken($prevIndex)]->isGivenKind(T_CATCH)
                )
            ) {
                $tokens[$index] = new Token([CT::T_TYPE_ALTERNATION, '|']);
            }

            break;
        } while (true);
    }
public function process(Tokens $tokens, Token $token, $index)
    {
        if (!$token->equals('|')) {
            return;
        }

        $prevIndex = $tokens->getPrevMeaningfulToken($index);
        $prevToken = $tokens[$prevIndex];

        if (!$prevToken->isGivenKind(T_STRING)) {
            return;
        }

        do {
            $prevIndex = $tokens->getPrevMeaningfulToken($prevIndex);
            if (null === $prevIndex) {
                break;
            }

            $prevToken = $tokens[$prevIndex];

            if ($prevToken->isGivenKind([T_NS_SEPARATOR, T_STRING])) {
                continue;
            }

            if (
                $prevToken->isGivenKind(CT::T_TYPE_ALTERNATION)
                || (
                    $prevToken->equals('(')
                    && $tokens[$tokens->getPrevMeaningfulToken($prevIndex)]->isGivenKind(T_CATCH)
                )
            ) {
                $tokens[$index] = new Token([CT::T_TYPE_ALTERNATION, '|']);
            }

            break;
        } while (true);
    }
{@inheritdoc}