std::string Qt6QLatin1StringCharToU::buildReplacement()

in src/checks/manuallevel/qt6-qlatin1stringchar-to-u.cpp [299:371]
60 lines of code
24 McCabe index (conditional complexity)

std::string Qt6QLatin1StringCharToU::buildReplacement(clang::Stmt *stmt, bool &noFix, bool extra, bool ancestorIsCondition, int ancestorConditionChildNumber)
{
    std::string replacement;
    Stmt *current_stmt = stmt;

    int i = 0;

    for (auto it = current_stmt->child_begin(); it != current_stmt->child_end(); it++) {
        Stmt *child = *it;
        auto *parent_condOp = dyn_cast<ConditionalOperator>(current_stmt);
        auto *child_condOp = dyn_cast<ConditionalOperator>(child);

        if (parent_condOp) {
            ancestorIsCondition = true;
            ancestorConditionChildNumber = i;
            if (ancestorConditionChildNumber == 2) {
                replacement += " : ";
            }
        }

        // to handle nested condition
        if (child_condOp && ancestorIsCondition) {
            replacement += "(";
        }

        // to handle catching left over nested QLatin1String call
        if (extra && child_condOp && !ancestorIsCondition) {
            replacement += "(";
        }

        replacement += buildReplacement(child, noFix, extra, ancestorIsCondition, ancestorConditionChildNumber);

        auto *child_declRefExp = dyn_cast<DeclRefExpr>(child);
        auto *child_boolLitExp = dyn_cast<CXXBoolLiteralExpr>(child);
        auto *child_charliteral = dyn_cast<CharacterLiteral>(child);
        auto *child_stringliteral = dyn_cast<StringLiteral>(child);

        if (child_stringliteral) {
            replacement += "u\"";
            replacement += child_stringliteral->getString();
            replacement += "\"";
            replacement += "_qs";
        } else if (child_charliteral) {
            replacement += "u\'";
            if (child_charliteral->getValue() == 92 || child_charliteral->getValue() == 39) {
                replacement += "\\";
            }
            replacement += child_charliteral->getValue();
            replacement += "\'";
        } else if (child_boolLitExp) {
            replacement = child_boolLitExp->getValue() ? "true" : "false";
            replacement += " ? ";
        } else if (child_declRefExp) {
            if (ancestorIsCondition && ancestorConditionChildNumber == 0 && child_declRefExp->getType().getAsString() == "_Bool") {
                replacement += child_declRefExp->getNameInfo().getAsString();
                replacement += " ? ";
            } else {
                // not supporting those cases
                noFix = true;
                return {};
            }
        } else if (child_condOp && ancestorIsCondition) {
            replacement += ")";
        }

        if (extra && child_condOp && !ancestorIsCondition) {
            replacement += ")";
        }

        i++;
    }
    return replacement;
}