zhangstar333 commented on a change in pull request #8307: URL: https://github.com/apache/incubator-doris/pull/8307#discussion_r818410511
########## File path: be/src/vec/functions/function_hex.cpp ########## @@ -0,0 +1,181 @@ +// Licensed to the Apache Software Foundation (ASF) under one +// or more contributor license agreements. See the NOTICE file +// distributed with this work for additional information +// regarding copyright ownership. The ASF licenses this file +// to you under the Apache License, Version 2.0 (the +// "License"); you may not use this file except in compliance +// with the License. You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, +// software distributed under the License is distributed on an +// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +// KIND, either express or implied. See the License for the +// specific language governing permissions and limitations +// under the License. + + +#include "vec/columns/column_complex.h" +#include "vec/data_types/data_type.h" +#include "vec/data_types/data_type_hll.h" +#include "vec/functions/function_const.h" +#include "vec/functions/function_string.h" +#include "vec/functions/function_totype.h" +#include "vec/functions/simple_function_factory.h" +#include "util/simd/vstring_function.h" //place this header file at last to compile + +namespace doris::vectorized { +template <typename Impl> +class FunctionHexVariadic : public IFunction { +public: + static constexpr auto name = "hex"; + + static FunctionPtr create() { return std::make_shared<FunctionHexVariadic>(); } + + String get_name() const override { return name; } + + size_t get_number_of_arguments() const override { return 1; } + + DataTypePtr get_return_type_impl(const DataTypes& arguments) const override { + return std::make_shared<DataTypeString>(); + } + + bool use_default_implementation_for_constants() const override { return true; } + + Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments, + size_t result, size_t input_rows_count) override { + ColumnPtr argument_column = + block.get_by_position(arguments[0]).column->convert_to_full_column_if_const(); + + auto result_data_column = ColumnString::create(); + auto& result_data = result_data_column->get_chars(); + auto& result_offset = result_data_column->get_offsets(); + + Impl::vector(argument_column, input_rows_count, result_data, result_offset); + block.replace_by_position(result, std::move(result_data_column)); + return Status::OK(); + } +}; + +static void hex_encode(const unsigned char* source, size_t srclen, unsigned char*& dst_data_ptr, + size_t& offset) { + if (srclen == 0) { + DCHECK(*source == '\0'); + *dst_data_ptr = '\0'; + dst_data_ptr++; + offset++; + } else { + doris::simd::VStringFunctions::hex_encode(source, srclen, + reinterpret_cast<char*>(dst_data_ptr)); + dst_data_ptr[srclen * 2] = '\0'; + dst_data_ptr += (srclen * 2 + 1); + offset += (srclen * 2 + 1); + } +} + +struct HexStringImpl { + static DataTypes get_variadic_argument_types() { return {std::make_shared<DataTypeString>()}; } + + static Status vector(ColumnPtr argument_column, size_t input_rows_count, + ColumnString::Chars& dst_data, ColumnString::Offsets& dst_offsets) { + const auto* str_col = check_and_get_column<ColumnString>(argument_column.get()); + auto& data = str_col->get_chars(); + auto& offsets = str_col->get_offsets(); + dst_offsets.resize(input_rows_count); + dst_data.resize(data.size() * 2); + + size_t offset = 0; + auto dst_data_ptr = dst_data.data(); + for (int i = 0; i < input_rows_count; ++i) { + auto source = reinterpret_cast<const unsigned char*>(&data[offsets[i - 1]]); + size_t srclen = offsets[i] - offsets[i - 1] - 1; + hex_encode(source, srclen, dst_data_ptr, offset); + dst_offsets[i] = offset; + } + return Status::OK(); + } +}; + +struct HexIntImpl { + static DataTypes get_variadic_argument_types() { + return {std::make_shared<vectorized::DataTypeInt64>()}; + } + + static std::string_view hex(uint64_t num, char* ans) { + static constexpr auto hex_table = "0123456789ABCDEF"; + // uint64_t max value 0xFFFFFFFFFFFFFFFF , 16 'F' + if (num == 0) { + return {hex_table, 1}; + } + + int i = 0; + while (num) { + ans[i++] = hex_table[num & 15]; + num = num >> 4; + } + ans[i] = '\0'; + + // reverse + for (int k = 0, j = i - 1; k <= j && k <= 16; k++, j--) { + char tmp = ans[j]; + ans[j] = ans[k]; + ans[k] = tmp; + } + + return {ans, static_cast<size_t>(i)}; + } + + static Status vector(ColumnPtr argument_column, size_t input_rows_count, + ColumnString::Chars& res_data, ColumnString::Offsets& res_offsets) { + const auto* str_col = check_and_get_column<ColumnVector<Int64>>(argument_column.get()); + auto& data = str_col->get_data(); + + res_offsets.resize(input_rows_count); + char ans[17]; + for (size_t i = 0; i < input_rows_count; ++i) { + StringOP::push_value_string(hex(data[i], ans), i, res_data, res_offsets); + } + return Status::OK(); + } +}; + +struct HexHLLImpl { + static DataTypes get_variadic_argument_types() { + return {std::make_shared<vectorized::DataTypeHLL>()}; + } + + static Status vector(ColumnPtr argument_column, size_t input_rows_count, + ColumnString::Chars& res_data, ColumnString::Offsets& res_offsets) { + const auto* str_col = check_and_get_column<ColumnHLL>(argument_column.get()); + const auto& hll_data = str_col->get_data(); + size_t total_length = 0; + std::vector<std::string> hll_str(input_rows_count); Review comment: done. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
