Function isOperator

kdevplatform/language/duchain/stringhelpers.cpp:62–101

}

bool isOperator(QStringView str, int pos)
{
    Q_ASSERT(pos >= 0 && pos < str.size());

    if (isOperatorSurroundedWithSpaces(str, pos)) {
        return true;
    }

    const auto op = QLatin1String("operator");
    if (pos < op.size()) {
        return false;
    }

    const auto c = str[pos];
    Q_ASSERT(c == QLatin1Char('<') || c == QLatin1Char('>'));

    --pos;

    // note: due to the `pos < op.size()` check above, the below conditionals don't need to check boundaries
    if (str[pos] == c) {
        // handle `operator<<` and `operator>>`
        --pos;
    } else if (c == QLatin1Char('>') && str[pos] == QLatin1Char('=') && str[pos - 1] == QLatin1Char('<')) {
        // handle `operator<=>`
        pos -= 2;
    }

    // skip spaces, e.g. `operator <`
    while (pos > 0 && str[pos].isSpace()) {
        --pos;
    }

    auto prefix = str.first(pos + 1);
    if (!prefix.endsWith(op)) {
        return false;
    }

    prefix.chop(op.size());
    return endsWithWordBoundary(prefix);
}

// check for operator-> but don't get confused by operator-->
bool isArrowOperator(QStringView str, int pos)