// 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.

// This file is copied from

// https://github.com/ClickHouse/ClickHouse/blob/master/src/Functions/bitAnd.cpp

// and modified by Doris

#include <utility>

#include "common/status.h"

#include "core/column/column.h"

#include "core/column/column_string.h"

#include "core/column/column_vector.h"

#include "core/data_type/data_type_number.h"

#include "core/data_type/define_primitive_type.h"

#include "core/data_type/number_traits.h"

#include "core/pod_array_fwd.h"

#include "core/types.h"

#include "exprs/function/function_totype.h"

#include "exprs/function/function_unary_arithmetic.h"

#include "exprs/function/simple_function_factory.h"

namespace doris {

template <typename Impl>

class FunctionBit : public IFunction {

public:

static constexpr auto name = Impl::name;

String get_name() const override { return name; }

static FunctionPtr create() { return std::make_shared<FunctionBit<Impl>>(); }

DataTypes get_variadic_argument_types_impl() const override {

return {std::make_shared<typename Impl::DataType>(),

std::make_shared<typename Impl::DataType>()};

}

DataTypePtr get_return_type_impl(const DataTypes& arguments) const override {

return std::make_shared<typename Impl::DataType>();

}

size_t get_number_of_arguments() const override { return 2; }

bool use_default_implementation_for_constants() const final { return false; }

Status execute_impl(FunctionContext* context, Block& block, const ColumnNumbers& arguments,

uint32_t result, size_t input_rows_count) const override {

auto& column_left = block.get_by_position(arguments[0]).column;

auto& column_right = block.get_by_position(arguments[1]).column;

bool is_const_left = is_column_const(*column_left);

bool is_const_right = is_column_const(*column_right);

ColumnPtr column_result = nullptr;

if (is_const_left && is_const_right) {

column_result = constant_constant(column_left, column_right);

} else if (is_const_left) {

column_result = constant_vector(column_left, column_right);

} else if (is_const_right) {

column_result = vector_constant(column_left, column_right);

} else {

column_result = vector_vector(column_left, column_right);

}

block.replace_by_position(result, std::move(column_result));

return Status::OK();

}

private:

ColumnPtr constant_constant(ColumnPtr column_left, ColumnPtr column_right) const {

const auto* column_left_ptr = assert_cast<const ColumnConst*>(column_left.get());

const auto* column_right_ptr = assert_cast<const ColumnConst*>(column_right.get());

ColumnPtr column_result = nullptr;

auto res = Impl::ColumnType::create(1);

res->get_element(0) = Impl::apply(column_left_ptr->template get_value<Impl::ArgPType>(),

column_right_ptr->template get_value<Impl::ArgPType>());

column_result = std::move(res);

return ColumnConst::create(std::move(column_result), column_left->size());

}

ColumnPtr vector_constant(ColumnPtr column_left, ColumnPtr column_right) const {

const auto* column_right_ptr = assert_cast<const ColumnConst*>(column_right.get());

const auto* column_left_ptr =

assert_cast<const typename Impl::ColumnType*>(column_left.get());

auto column_result = Impl::ColumnType::create(column_left->size());

auto& a = column_left_ptr->get_data();

auto& c = column_result->get_data();

size_t size = a.size();

for (size_t i = 0; i < size; ++i) {

c[i] = Impl::apply(a[i], column_right_ptr->template get_value<Impl::ArgPType>());

}

return column_result;

}

ColumnPtr constant_vector(ColumnPtr column_left, ColumnPtr column_right) const {

const auto* column_left_ptr = assert_cast<const ColumnConst*>(column_left.get());

const auto* column_right_ptr =

assert_cast<const typename Impl::ColumnType*>(column_right.get());

auto column_result = Impl::ColumnType::create(column_right->size());

auto& b = column_right_ptr->get_data();

auto& c = column_result->get_data();

size_t size = b.size();

for (size_t i = 0; i < size; ++i) {

c[i] = Impl::apply(column_left_ptr->template get_value<Impl::ArgPType>(), b[i]);

}

return column_result;

}

ColumnPtr vector_vector(ColumnPtr column_left, ColumnPtr column_right) const {

const auto* column_left_ptr =

assert_cast<const typename Impl::ColumnType*>(column_left->get_ptr().get());

const auto* column_right_ptr =

assert_cast<const typename Impl::ColumnType*>(column_right->get_ptr().get());

auto column_result = Impl::ColumnType::create(column_left->size());

auto& a = column_left_ptr->get_data();

auto& b = column_right_ptr->get_data();

auto& c = column_result->get_data();

size_t size = a.size();

for (size_t i = 0; i < size; ++i) {

c[i] = Impl::apply(a[i], b[i]);

}

return column_result;

}

};

template <PrimitiveType PType>

struct BitAndImpl {

static_assert(is_int(PType));

using Arg = typename PrimitiveTypeTraits<PType>::CppType;

using DataType = typename PrimitiveTypeTraits<PType>::DataType;

using ColumnType = typename PrimitiveTypeTraits<PType>::ColumnType;

static constexpr auto name = "bitand";

static constexpr bool is_nullable = false;

static constexpr PrimitiveType ArgPType = PType;

static inline Arg apply(Arg a, Arg b) { return a & b; }

};

template <PrimitiveType PType>

struct BitOrImpl {

static_assert(is_int(PType));

using Arg = typename PrimitiveTypeTraits<PType>::CppType;

using DataType = typename PrimitiveTypeTraits<PType>::DataType;

using ColumnType = typename PrimitiveTypeTraits<PType>::ColumnType;

static constexpr auto name = "bitor";

static constexpr bool is_nullable = false;

static constexpr PrimitiveType ArgPType = PType;

static inline Arg apply(Arg a, Arg b) { return a | b; }

};

template <PrimitiveType PType>

struct BitXorImpl {

static_assert(is_int(PType));

using Arg = typename PrimitiveTypeTraits<PType>::CppType;

using DataType = typename PrimitiveTypeTraits<PType>::DataType;

using ColumnType = typename PrimitiveTypeTraits<PType>::ColumnType;

static constexpr auto name = "bitxor";

static constexpr bool is_nullable = false;

static constexpr PrimitiveType ArgPType = PType;

static inline Arg apply(Arg a, Arg b) { return a ^ b; }

};

struct NameBitNot {

static constexpr auto name = "bitnot";

};

template <typename A>

struct BitNotImpl {

static constexpr PrimitiveType ResultType = NumberTraits::ResultOfBitNot<A>::Type;

static inline typename PrimitiveTypeTraits<ResultType>::CppType apply(A a) {

return ~static_cast<typename PrimitiveTypeTraits<ResultType>::CppType>(a);

}

};

struct NameBitLength {

static constexpr auto name = "bit_length";

};

struct BitLengthImpl {

using ReturnType = DataTypeInt32;

static constexpr auto PrimitiveTypeImpl = PrimitiveType::TYPE_STRING;

using Type = String;

using ReturnColumnType = ColumnInt32;

static Status vector(const ColumnString::Chars& data, const ColumnString::Offsets& offsets,

PaddedPODArray<Int32>& res) {

auto size = offsets.size();

res.resize(size);

for (int i = 0; i < size; ++i) {

int str_size = offsets[i] - offsets[i - 1];

res[i] = (str_size * 8);

}

return Status::OK();

}

};

using FunctionBitNotTinyInt = FunctionUnaryArithmetic<BitNotImpl<Int8>, NameBitNot, TYPE_TINYINT>;

using FunctionBitNotSmallInt =

FunctionUnaryArithmetic<BitNotImpl<Int16>, NameBitNot, TYPE_SMALLINT>;

using FunctionBitNotInt = FunctionUnaryArithmetic<BitNotImpl<Int32>, NameBitNot, TYPE_INT>;

using FunctionBitNotBigInt = FunctionUnaryArithmetic<BitNotImpl<Int64>, NameBitNot, TYPE_BIGINT>;

using FunctionBitNotLargeInt =

FunctionUnaryArithmetic<BitNotImpl<Int128>, NameBitNot, TYPE_LARGEINT>;

using FunctionBitLength = FunctionUnaryToType<BitLengthImpl, NameBitLength>;

void register_function_bit(SimpleFunctionFactory& factory) {

factory.register_function<FunctionBit<BitAndImpl<TYPE_TINYINT>>>();

factory.register_function<FunctionBit<BitAndImpl<TYPE_SMALLINT>>>();

factory.register_function<FunctionBit<BitAndImpl<TYPE_INT>>>();

factory.register_function<FunctionBit<BitAndImpl<TYPE_BIGINT>>>();

factory.register_function<FunctionBit<BitAndImpl<TYPE_LARGEINT>>>();

factory.register_function<FunctionBit<BitOrImpl<TYPE_TINYINT>>>();

factory.register_function<FunctionBit<BitOrImpl<TYPE_SMALLINT>>>();

factory.register_function<FunctionBit<BitOrImpl<TYPE_INT>>>();

factory.register_function<FunctionBit<BitOrImpl<TYPE_BIGINT>>>();

factory.register_function<FunctionBit<BitOrImpl<TYPE_LARGEINT>>>();

factory.register_function<FunctionBit<BitXorImpl<TYPE_TINYINT>>>();

factory.register_function<FunctionBit<BitXorImpl<TYPE_SMALLINT>>>();

factory.register_function<FunctionBit<BitXorImpl<TYPE_INT>>>();

factory.register_function<FunctionBit<BitXorImpl<TYPE_BIGINT>>>();

factory.register_function<FunctionBit<BitXorImpl<TYPE_LARGEINT>>>();

factory.register_function<FunctionBitNotTinyInt>();

factory.register_function<FunctionBitNotSmallInt>();

factory.register_function<FunctionBitNotInt>();

factory.register_function<FunctionBitNotBigInt>();

factory.register_function<FunctionBitNotLargeInt>();

factory.register_function<FunctionBitLength>();

}

} // namespace doris