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#pragma once
#include <DataTypes/DataTypesNumber.h>
#include <Columns/ColumnVector.h>
#include <Functions/IFunction.h>
#include <Functions/FunctionHelpers.h>
#include <IO/WriteHelpers.h>
#include <Interpreters/Context_fwd.h>
#include <base/range.h>
namespace DB
{
namespace ErrorCodes
{
extern const int ILLEGAL_COLUMN;
extern const int ILLEGAL_TYPE_OF_ARGUMENT;
extern const int TOO_FEW_ARGUMENTS_FOR_FUNCTION;
}
template <typename Impl, typename Name>
struct FunctionBitTestMany : public IFunction
{
public:
static constexpr auto name = Name::name;
static FunctionPtr create(ContextPtr) { return std::make_shared<FunctionBitTestMany>(); }
String getName() const override { return name; }
bool isVariadic() const override { return true; }
bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override { return false; }
size_t getNumberOfArguments() const override { return 0; }
DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
{
if (arguments.size() < 2)
throw Exception(ErrorCodes::TOO_FEW_ARGUMENTS_FOR_FUNCTION, "Number of arguments for function {} doesn't match: "
"passed {}, should be at least 2.", getName(), arguments.size());
const auto & first_arg = arguments.front();
if (!isInteger(first_arg))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Illegal type {} of first argument of function {}", first_arg->getName(), getName());
for (const auto i : collections::range(1, arguments.size()))
{
const auto & pos_arg = arguments[i];
if (!isUnsignedInteger(pos_arg))
throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT, "Illegal type {} of {} argument of function {}", pos_arg->getName(), i, getName());
}
return std::make_shared<DataTypeUInt8>();
}
ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t /*input_rows_count*/) const override
{
const auto * value_col = arguments.front().column.get();
ColumnPtr res;
if (!((res = execute<UInt8>(arguments, result_type, value_col))
|| (res = execute<UInt16>(arguments, result_type, value_col))
|| (res = execute<UInt32>(arguments, result_type, value_col))
|| (res = execute<UInt64>(arguments, result_type, value_col))
|| (res = execute<Int8>(arguments, result_type, value_col))
|| (res = execute<Int16>(arguments, result_type, value_col))
|| (res = execute<Int32>(arguments, result_type, value_col))
|| (res = execute<Int64>(arguments, result_type, value_col))))
throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal column {} of argument of function {}", value_col->getName(), getName());
return res;
}
private:
template <typename T>
ColumnPtr execute(
const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type,
const IColumn * const value_col_untyped) const
{
if (const auto value_col = checkAndGetColumn<ColumnVector<T>>(value_col_untyped))
{
const auto size = value_col->size();
bool is_const;
const auto const_mask = createConstMaskIfConst<T>(arguments, is_const);
const auto & val = value_col->getData();
auto out_col = ColumnVector<UInt8>::create(size);
auto & out = out_col->getData();
if (is_const)
{
for (const auto i : collections::range(0, size))
out[i] = Impl::apply(val[i], const_mask);
}
else
{
const auto mask = createMask<T>(size, arguments);
for (const auto i : collections::range(0, size))
out[i] = Impl::apply(val[i], mask[i]);
}
return out_col;
}
else if (const auto value_col_const = checkAndGetColumnConst<ColumnVector<T>>(value_col_untyped))
{
const auto size = value_col_const->size();
bool is_const;
const auto const_mask = createConstMaskIfConst<T>(arguments, is_const);
const auto val = value_col_const->template getValue<T>();
if (is_const)
{
return result_type->createColumnConst(size, toField(Impl::apply(val, const_mask)));
}
else
{
const auto mask = createMask<T>(size, arguments);
auto out_col = ColumnVector<UInt8>::create(size);
auto & out = out_col->getData();
for (const auto i : collections::range(0, size))
out[i] = Impl::apply(val, mask[i]);
return out_col;
}
}
return nullptr;
}
template <typename ValueType>
ValueType createConstMaskIfConst(const ColumnsWithTypeAndName & arguments, bool & out_is_const) const
{
out_is_const = true;
ValueType mask = 0;
for (const auto i : collections::range(1, arguments.size()))
{
if (auto pos_col_const = checkAndGetColumnConst<ColumnVector<ValueType>>(arguments[i].column.get()))
{
const auto pos = pos_col_const->getUInt(0);
if (pos < 8 * sizeof(ValueType))
mask = mask | (ValueType(1) << pos);
}
else
{
out_is_const = false;
return {};
}
}
return mask;
}
template <typename ValueType>
PaddedPODArray<ValueType> createMask(const size_t size, const ColumnsWithTypeAndName & arguments) const
{
PaddedPODArray<ValueType> mask(size, ValueType{});
for (const auto i : collections::range(1, arguments.size()))
{
const auto * pos_col = arguments[i].column.get();
if (!addToMaskImpl<UInt8>(mask, pos_col)
&& !addToMaskImpl<UInt16>(mask, pos_col)
&& !addToMaskImpl<UInt32>(mask, pos_col)
&& !addToMaskImpl<UInt64>(mask, pos_col))
throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal column {} of argument of function {}", pos_col->getName(), getName());
}
return mask;
}
template <typename PosType, typename ValueType>
bool NO_SANITIZE_UNDEFINED addToMaskImpl(PaddedPODArray<ValueType> & mask, const IColumn * const pos_col_untyped) const
{
if (const auto pos_col = checkAndGetColumn<ColumnVector<PosType>>(pos_col_untyped))
{
const auto & pos = pos_col->getData();
for (const auto i : collections::range(0, mask.size()))
if (pos[i] < 8 * sizeof(ValueType))
mask[i] = mask[i] | (ValueType(1) << pos[i]);
return true;
}
else if (const auto pos_col_const = checkAndGetColumnConst<ColumnVector<PosType>>(pos_col_untyped))
{
const auto & pos = pos_col_const->template getValue<PosType>();
const auto new_mask = pos < 8 * sizeof(ValueType) ? ValueType(1) << pos : 0;
for (const auto i : collections::range(0, mask.size()))
mask[i] = mask[i] | new_mask;
return true;
}
return false;
}
};
}
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