Method formatVector

src/Functions/formatQuery.cpp:98–162

private:
    void formatVector(
        const ColumnString::Chars & data,
        const ColumnString::Offsets & offsets,
        ColumnString::Chars & res_data,
        ColumnString::Offsets & res_offsets,
        ColumnUInt8::MutablePtr & res_null_map,
        size_t input_rows_count) const
    {
        res_offsets.resize(input_rows_count);
        res_data.resize(data.size());

        size_t prev_offset = 0;
        size_t res_data_size = 0;

        for (size_t i = 0; i < input_rows_count; ++i)
        {
            const char * begin = reinterpret_cast<const char *>(&data[prev_offset]);
            const char * end = begin + offsets[i] - prev_offset;

            ParserQuery parser(end, false, implicit_select);
            ASTPtr ast;
            WriteBufferFromOwnString buf;

            try
            {
                ast = parseQuery(parser, begin, end, /*query_description*/ {}, max_query_size, max_parser_depth, max_parser_backtracks);
            }
            catch (...)
            {
                if (error_handling == ErrorHandling::Null)
                {
                    const size_t res_data_new_size = res_data_size + 1;
                    if (res_data_new_size > res_data.size())
                        res_data.resize(2 * res_data_new_size);

                    res_offsets[i] = res_data_size;
                    prev_offset = offsets[i];

                    res_null_map->getData()[i] = 1;

                    continue;
                }

                throw;
            }

            IAST::FormatSettings settings(output_formatting == OutputFormatting::SingleLine);
            settings.show_secrets = true;
            settings.print_pretty_type_names = print_pretty_type_names;
            ast->format(buf, settings);

            auto formatted = buf.stringView();

            const size_t res_data_new_size = res_data_size + formatted.size();
            if (res_data_new_size > res_data.size())
                res_data.resize(2 * res_data_new_size);

            memcpy(&res_data[res_data_size], formatted.data(), formatted.size());