mirror of
https://github.com/ClickHouse/ClickHouse.git
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273 lines
9.2 KiB
C++
273 lines
9.2 KiB
C++
#pragma once
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#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/DataTypesDecimal.h>
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#include <DataTypes/DataTypeFixedString.h>
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#include <DataTypes/Native.h>
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#include <Columns/ColumnVector.h>
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#include <Columns/ColumnDecimal.h>
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#include <Columns/ColumnFixedString.h>
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#include <Functions/IFunctionImpl.h>
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#include <Functions/FunctionHelpers.h>
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#include <Functions/castTypeToEither.h>
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#if !defined(ARCADIA_BUILD)
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# include <Common/config.h>
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#endif
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#if USE_EMBEDDED_COMPILER
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# pragma GCC diagnostic push
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# pragma GCC diagnostic ignored "-Wunused-parameter"
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# include <llvm/IR/IRBuilder.h>
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# pragma GCC diagnostic pop
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#endif
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namespace DB
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{
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namespace ErrorCodes
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{
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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extern const int LOGICAL_ERROR;
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}
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template <typename A, typename Op>
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struct UnaryOperationImpl
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{
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using ResultType = typename Op::ResultType;
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using ColVecA = std::conditional_t<IsDecimalNumber<A>, ColumnDecimal<A>, ColumnVector<A>>;
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using ColVecC = std::conditional_t<IsDecimalNumber<ResultType>, ColumnDecimal<ResultType>, ColumnVector<ResultType>>;
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using ArrayA = typename ColVecA::Container;
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using ArrayC = typename ColVecC::Container;
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static void NO_INLINE vector(const ArrayA & a, ArrayC & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = Op::apply(a[i]);
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}
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static void constant(A a, ResultType & c)
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{
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c = Op::apply(a);
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}
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};
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template <typename Op>
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struct FixedStringUnaryOperationImpl
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{
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static void NO_INLINE vector(const ColumnFixedString::Chars & a, ColumnFixedString::Chars & c)
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{
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size_t size = a.size();
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for (size_t i = 0; i < size; ++i)
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c[i] = Op::apply(a[i]);
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}
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};
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template <typename FunctionName>
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struct FunctionUnaryArithmeticMonotonicity;
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template <typename> struct AbsImpl;
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template <typename> struct NegateImpl;
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/// Used to indicate undefined operation
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struct InvalidType;
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template <template <typename> class Op, typename Name, bool is_injective>
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class FunctionUnaryArithmetic : public IFunction
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{
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static constexpr bool allow_decimal = std::is_same_v<Op<Int8>, NegateImpl<Int8>> || std::is_same_v<Op<Int8>, AbsImpl<Int8>>;
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static constexpr bool allow_fixed_string = Op<UInt8>::allow_fixed_string;
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template <typename F>
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static bool castType(const IDataType * type, F && f)
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{
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return castTypeToEither<
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DataTypeUInt8,
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DataTypeUInt16,
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DataTypeUInt32,
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DataTypeUInt64,
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DataTypeInt8,
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DataTypeInt16,
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DataTypeInt32,
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DataTypeInt64,
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DataTypeFloat32,
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DataTypeFloat64,
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DataTypeDecimal<Decimal32>,
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DataTypeDecimal<Decimal64>,
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DataTypeDecimal<Decimal128>,
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DataTypeFixedString
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>(type, std::forward<F>(f));
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}
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public:
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static constexpr auto name = Name::name;
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static FunctionPtr create(const Context &) { return std::make_shared<FunctionUnaryArithmetic>(); }
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String getName() const override
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{
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return name;
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}
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size_t getNumberOfArguments() const override { return 1; }
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bool isInjective(const Block &) const override { return is_injective; }
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bool useDefaultImplementationForConstants() const override { return true; }
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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DataTypePtr result;
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bool valid = castType(arguments[0].get(), [&](const auto & type)
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{
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using DataType = std::decay_t<decltype(type)>;
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if constexpr (std::is_same_v<DataTypeFixedString, DataType>)
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{
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if constexpr (!Op<DataTypeFixedString>::allow_fixed_string)
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return false;
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result = std::make_shared<DataType>(type.getN());
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}
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else
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{
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using T0 = typename DataType::FieldType;
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if constexpr (IsDataTypeDecimal<DataType>)
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{
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if constexpr (!allow_decimal)
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return false;
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result = std::make_shared<DataType>(type.getPrecision(), type.getScale());
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}
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else
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result = std::make_shared<DataTypeNumber<typename Op<T0>::ResultType>>();
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}
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return true;
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});
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if (!valid)
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throw Exception("Illegal type " + arguments[0]->getName() + " of argument of function " + getName(),
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ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT);
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return result;
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}
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void executeImpl(Block & block, const ColumnNumbers & arguments, size_t result, size_t /*input_rows_count*/) override
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{
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bool valid = castType(block.getByPosition(arguments[0]).type.get(), [&](const auto & type)
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{
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using DataType = std::decay_t<decltype(type)>;
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if constexpr (std::is_same_v<DataTypeFixedString, DataType>)
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{
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if constexpr (allow_fixed_string)
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{
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if (auto col = checkAndGetColumn<ColumnFixedString>(block.getByPosition(arguments[0]).column.get()))
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{
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auto col_res = ColumnFixedString::create(col->getN());
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auto & vec_res = col_res->getChars();
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vec_res.resize(col->size() * col->getN());
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FixedStringUnaryOperationImpl<Op<UInt8>>::vector(col->getChars(), vec_res);
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block.getByPosition(result).column = std::move(col_res);
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return true;
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}
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}
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}
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else if constexpr (IsDataTypeDecimal<DataType>)
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{
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using T0 = typename DataType::FieldType;
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if constexpr (allow_decimal)
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{
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if (auto col = checkAndGetColumn<ColumnDecimal<T0>>(block.getByPosition(arguments[0]).column.get()))
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{
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auto col_res = ColumnDecimal<typename Op<T0>::ResultType>::create(0, type.getScale());
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auto & vec_res = col_res->getData();
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vec_res.resize(col->getData().size());
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UnaryOperationImpl<T0, Op<T0>>::vector(col->getData(), vec_res);
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block.getByPosition(result).column = std::move(col_res);
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return true;
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}
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}
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}
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else
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{
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using T0 = typename DataType::FieldType;
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if (auto col = checkAndGetColumn<ColumnVector<T0>>(block.getByPosition(arguments[0]).column.get()))
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{
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auto col_res = ColumnVector<typename Op<T0>::ResultType>::create();
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auto & vec_res = col_res->getData();
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vec_res.resize(col->getData().size());
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UnaryOperationImpl<T0, Op<T0>>::vector(col->getData(), vec_res);
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block.getByPosition(result).column = std::move(col_res);
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return true;
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}
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}
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return false;
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});
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if (!valid)
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throw Exception(getName() + "'s argument does not match the expected data type", ErrorCodes::LOGICAL_ERROR);
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}
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#if USE_EMBEDDED_COMPILER
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bool isCompilableImpl(const DataTypes & arguments) const override
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{
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return castType(arguments[0].get(), [&](const auto & type)
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{
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using DataType = std::decay_t<decltype(type)>;
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if constexpr (std::is_same_v<DataTypeFixedString, DataType>)
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return false;
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else
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return !IsDataTypeDecimal<DataType> && Op<typename DataType::FieldType>::compilable;
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});
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}
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llvm::Value * compileImpl(llvm::IRBuilderBase & builder, const DataTypes & types, ValuePlaceholders values) const override
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{
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llvm::Value * result = nullptr;
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castType(types[0].get(), [&](const auto & type)
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{
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using DataType = std::decay_t<decltype(type)>;
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if constexpr (std::is_same_v<DataTypeFixedString, DataType>)
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return false;
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else
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{
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using T0 = typename DataType::FieldType;
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using T1 = typename Op<T0>::ResultType;
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if constexpr (!std::is_same_v<T1, InvalidType> && !IsDataTypeDecimal<DataType> && Op<T0>::compilable)
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{
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auto & b = static_cast<llvm::IRBuilder<> &>(builder);
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auto * v = nativeCast(b, types[0], values[0](), std::make_shared<DataTypeNumber<T1>>());
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result = Op<T0>::compile(b, v, is_signed_v<T1>);
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return true;
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}
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}
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return false;
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});
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return result;
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}
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#endif
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bool hasInformationAboutMonotonicity() const override
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{
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return FunctionUnaryArithmeticMonotonicity<Name>::has();
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}
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Monotonicity getMonotonicityForRange(const IDataType &, const Field & left, const Field & right) const override
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{
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return FunctionUnaryArithmeticMonotonicity<Name>::get(left, right);
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}
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};
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struct PositiveMonotonicity
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{
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static bool has() { return true; }
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static IFunction::Monotonicity get(const Field &, const Field &)
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{
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return { true };
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}
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};
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}
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