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293 lines
12 KiB
C++
293 lines
12 KiB
C++
#pragma once
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#include <base/map.h>
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#include <Common/TargetSpecific.h>
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#include <Functions/FunctionHelpers.h>
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#include <Functions/GatherUtils/GatherUtils.h>
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#include <Functions/GatherUtils/Sources.h>
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#include <Functions/IFunction.h>
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#include <Functions/PerformanceAdaptors.h>
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#include <DataTypes/DataTypeString.h>
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#include <DataTypes/DataTypesNumber.h>
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#include <DataTypes/getLeastSupertype.h>
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#include <Columns/ColumnString.h>
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#include <Interpreters/castColumn.h>
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namespace DB
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{
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using namespace GatherUtils;
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namespace ErrorCodes
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{
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extern const int ILLEGAL_COLUMN;
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extern const int LOGICAL_ERROR;
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extern const int ILLEGAL_TYPE_OF_ARGUMENT;
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}
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struct NameStartsWith
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{
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static constexpr auto name = "startsWith";
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static constexpr auto is_utf8 = false;
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};
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struct NameEndsWith
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{
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static constexpr auto name = "endsWith";
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static constexpr auto is_utf8 = false;
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};
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struct NameStartsWithUTF8
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{
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static constexpr auto name = "startsWithUTF8";
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static constexpr auto is_utf8 = true;
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};
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struct NameEndsWithUTF8
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{
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static constexpr auto name = "endsWithUTF8";
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static constexpr auto is_utf8 = true;
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};
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DECLARE_MULTITARGET_CODE(
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template <typename Name>
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class FunctionStartsEndsWith : public IFunction
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{
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public:
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static constexpr auto name = Name::name;
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static constexpr auto is_utf8 = Name::is_utf8;
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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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bool isSuitableForShortCircuitArgumentsExecution(const DataTypesWithConstInfo & /*arguments*/) const override
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{
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return true;
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}
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size_t getNumberOfArguments() const override
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{
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return 2;
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}
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bool useDefaultImplementationForConstants() const override
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{
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return true;
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}
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DataTypePtr getReturnTypeImpl(const DataTypes & arguments) const override
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{
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if (!is_utf8 && isStringOrFixedString(arguments[0]) && isStringOrFixedString(arguments[1])
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|| isString(arguments[0]) && isString(arguments[1]))
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return std::make_shared<DataTypeUInt8>();
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if (isArray(arguments[0]) && isArray(arguments[1]))
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return std::make_shared<DataTypeUInt8>();
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throw Exception(ErrorCodes::ILLEGAL_TYPE_OF_ARGUMENT,
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"Illegal types {} {} of arguments of function {}. Both must be String or Array",
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arguments[0]->getName(), arguments[1]->getName(), getName());
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const override
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{
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auto data_type = arguments[0].type;
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if (!is_utf8 && isStringOrFixedString(*data_type))
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return executeImplString(arguments, {}, input_rows_count);
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if (is_utf8 && isString(*data_type))
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return executeImplStringUTF8(arguments, {}, input_rows_count);
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if (isArray(data_type))
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return executeImplArray(arguments, {}, input_rows_count);
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return {};
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}
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private:
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ColumnPtr executeImplArray(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const
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{
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DataTypePtr common_type = getLeastSupertype(collections::map(arguments, [](auto & arg) { return arg.type; }));
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Columns preprocessed_columns(2);
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for (size_t i = 0; i < 2; ++i)
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preprocessed_columns[i] = castColumn(arguments[i], common_type);
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std::vector<std::unique_ptr<GatherUtils::IArraySource>> sources;
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for (auto & argument_column : preprocessed_columns)
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{
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bool is_const = false;
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if (const auto * argument_column_const = typeid_cast<const ColumnConst *>(argument_column.get()))
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{
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is_const = true;
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argument_column = argument_column_const->getDataColumnPtr();
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}
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if (const auto * argument_column_array = typeid_cast<const ColumnArray *>(argument_column.get()))
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sources.emplace_back(GatherUtils::createArraySource(*argument_column_array, is_const, input_rows_count));
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else
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throw Exception(ErrorCodes::LOGICAL_ERROR, "Arguments for function {} must be arrays.", getName());
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}
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auto result_column = ColumnUInt8::create(input_rows_count);
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auto * result_column_ptr = typeid_cast<ColumnUInt8 *>(result_column.get());
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if constexpr (std::is_same_v<Name, NameStartsWith>)
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GatherUtils::sliceHas(*sources[0], *sources[1], GatherUtils::ArraySearchType::StartsWith, *result_column_ptr);
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else
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GatherUtils::sliceHas(*sources[0], *sources[1], GatherUtils::ArraySearchType::EndsWith, *result_column_ptr);
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return result_column;
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}
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ColumnPtr executeImplString(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const
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{
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const IColumn * haystack_column = arguments[0].column.get();
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const IColumn * needle_column = arguments[1].column.get();
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auto col_res = ColumnVector<UInt8>::create();
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typename ColumnVector<UInt8>::Container & vec_res = col_res->getData();
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vec_res.resize(input_rows_count);
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if (const ColumnString * haystack = checkAndGetColumn<ColumnString>(haystack_column))
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dispatch<StringSource>(StringSource(*haystack), needle_column, vec_res);
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else if (const ColumnFixedString * haystack_fixed = checkAndGetColumn<ColumnFixedString>(haystack_column))
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dispatch<FixedStringSource>(FixedStringSource(*haystack_fixed), needle_column, vec_res);
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else if (const ColumnConst * haystack_const = checkAndGetColumnConst<ColumnString>(haystack_column))
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dispatch<ConstSource<StringSource>>(ConstSource<StringSource>(*haystack_const), needle_column, vec_res);
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else if (const ColumnConst * haystack_const_fixed = checkAndGetColumnConst<ColumnFixedString>(haystack_column))
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dispatch<ConstSource<FixedStringSource>>(ConstSource<FixedStringSource>(*haystack_const_fixed), needle_column, vec_res);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal combination of columns as arguments of function {}", getName());
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return col_res;
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}
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ColumnPtr executeImplStringUTF8(const ColumnsWithTypeAndName & arguments, const DataTypePtr &, size_t input_rows_count) const
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{
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const IColumn * haystack_column = arguments[0].column.get();
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const IColumn * needle_column = arguments[1].column.get();
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auto col_res = ColumnVector<UInt8>::create();
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typename ColumnVector<UInt8>::Container & vec_res = col_res->getData();
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vec_res.resize(input_rows_count);
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if (const ColumnString * haystack = checkAndGetColumn<ColumnString>(haystack_column))
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dispatchUTF8<UTF8StringSource>(UTF8StringSource(*haystack), needle_column, vec_res);
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else if (const ColumnConst * haystack_const = checkAndGetColumnConst<ColumnString>(haystack_column))
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dispatchUTF8<ConstSource<UTF8StringSource>>(ConstSource<UTF8StringSource>(*haystack_const), needle_column, vec_res);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal combination of columns as arguments of function {}", getName());
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return col_res;
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}
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template <typename HaystackSource>
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void dispatch(HaystackSource haystack_source, const IColumn * needle_column, PaddedPODArray<UInt8> & res_data) const
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{
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if (const ColumnString * needle = checkAndGetColumn<ColumnString>(needle_column))
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execute<HaystackSource, StringSource>(haystack_source, StringSource(*needle), res_data);
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else if (const ColumnFixedString * needle_fixed = checkAndGetColumn<ColumnFixedString>(needle_column))
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execute<HaystackSource, FixedStringSource>(haystack_source, FixedStringSource(*needle_fixed), res_data);
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else if (const ColumnConst * needle_const = checkAndGetColumnConst<ColumnString>(needle_column))
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execute<HaystackSource, ConstSource<StringSource>>(haystack_source, ConstSource<StringSource>(*needle_const), res_data);
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else if (const ColumnConst * needle_const_fixed = checkAndGetColumnConst<ColumnFixedString>(needle_column))
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execute<HaystackSource, ConstSource<FixedStringSource>>(haystack_source, ConstSource<FixedStringSource>(*needle_const_fixed), res_data);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal combination of columns as arguments of function {}", getName());
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}
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template <typename HaystackSource>
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void dispatchUTF8(HaystackSource haystack_source, const IColumn * needle_column, PaddedPODArray<UInt8> & res_data) const
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{
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if (const ColumnString * needle = checkAndGetColumn<ColumnString>(needle_column))
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execute<HaystackSource, UTF8StringSource>(haystack_source, UTF8StringSource(*needle), res_data);
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else if (const ColumnConst * needle_const = checkAndGetColumnConst<ColumnString>(needle_column))
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execute<HaystackSource, ConstSource<UTF8StringSource>>(haystack_source, ConstSource<UTF8StringSource>(*needle_const), res_data);
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else
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throw Exception(ErrorCodes::ILLEGAL_COLUMN, "Illegal combination of columns as arguments of function {}", getName());
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}
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template <typename HaystackSource, typename NeedleSource>
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static void execute(HaystackSource haystack_source, NeedleSource needle_source, PaddedPODArray<UInt8> & res_data)
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{
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size_t row_num = 0;
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while (!haystack_source.isEnd())
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{
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auto haystack = haystack_source.getWhole();
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auto needle = needle_source.getWhole();
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if (needle.size > haystack.size)
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res_data[row_num] = false;
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else
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{
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if constexpr (std::is_same_v<Name, NameStartsWith>) /// startsWith
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res_data[row_num] = StringRef(haystack.data, needle.size) == StringRef(needle.data, needle.size);
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else if constexpr (std::is_same_v<Name, NameEndsWith>) /// endsWith
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res_data[row_num] = StringRef(haystack.data + haystack.size - needle.size, needle.size) == StringRef(needle.data, needle.size);
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else /// startsWithUTF8 or endsWithUTF8
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{
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auto length = UTF8::countCodePoints(needle.data, needle.size);
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if constexpr (std::is_same_v<Name, NameStartsWithUTF8>)
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{
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auto slice = haystack_source.getSliceFromLeft(0, length);
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res_data[row_num] = StringRef(slice.data, slice.size) == StringRef(needle.data, needle.size);
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}
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else
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{
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auto slice = haystack_source.getSliceFromRight(length);
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res_data[row_num] = StringRef(slice.data, slice.size) == StringRef(needle.data, needle.size);
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}
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}
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}
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haystack_source.next();
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needle_source.next();
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++row_num;
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}
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}
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};
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) // DECLARE_MULTITARGET_CODE
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template <typename Name>
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class FunctionStartsEndsWith : public TargetSpecific::Default::FunctionStartsEndsWith<Name>
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{
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public:
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explicit FunctionStartsEndsWith(ContextPtr context) : selector(context)
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{
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selector.registerImplementation<TargetArch::Default,
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TargetSpecific::Default::FunctionStartsEndsWith<Name>>();
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#if USE_MULTITARGET_CODE
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selector.registerImplementation<TargetArch::SSE42,
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TargetSpecific::SSE42::FunctionStartsEndsWith<Name>>();
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selector.registerImplementation<TargetArch::AVX,
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TargetSpecific::AVX::FunctionStartsEndsWith<Name>>();
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selector.registerImplementation<TargetArch::AVX2,
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TargetSpecific::AVX2::FunctionStartsEndsWith<Name>>();
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selector.registerImplementation<TargetArch::AVX512F,
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TargetSpecific::AVX512F::FunctionStartsEndsWith<Name>>();
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#endif
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}
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ColumnPtr executeImpl(const ColumnsWithTypeAndName & arguments, const DataTypePtr & result_type, size_t input_rows_count) const override
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{
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return selector.selectAndExecute(arguments, result_type, input_rows_count);
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}
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static FunctionPtr create(ContextPtr context)
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{
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return std::make_shared<FunctionStartsEndsWith<Name>>(context);
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}
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private:
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ImplementationSelector<IFunction> selector;
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};
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}
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