Method fuzzVector

src/Functions/fuzzQuery.cpp:113–139

private:
    void fuzzVector(
        const ColumnString::Chars & data,
        const ColumnString::Offsets & offsets,
        ColumnString & col_res,
        size_t input_rows_count) const
    {
        size_t prev_offset = 0;
        for (size_t i = 0; i < input_rows_count; ++i)
        {
            const char * begin = reinterpret_cast<const char *>(&data[prev_offset]);
            const char * end = reinterpret_cast<const char *>(&data[offsets[i]]);

            ParserQuery parser(end, false, implicit_select);
            ASTPtr ast = parseQuery(parser, begin, end, "fuzzQuery", max_query_size, max_parser_depth, max_parser_backtracks);

            ASTPtr fuzzed_ast;
            {
                auto [fuzzer, lock] = getGlobalASTFuzzer();
                fuzzer->fuzzMain(ast);
            }

            WriteBufferFromOwnString buf;
            ast->format(buf, IAST::FormatSettings(/*one_line=*/true));
            col_res.insertData(buf.str().data(), buf.str().size());
            prev_offset = offsets[i];
        }
    }

    size_t max_query_size;
    size_t max_parser_depth;