119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/*
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* Tuple.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef FDB_FLOW_TUPLE_H
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#define FDB_FLOW_TUPLE_H
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#pragma once
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#include "bindings/flow/fdb_flow.h"
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namespace FDB {
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struct Uuid {
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const static size_t SIZE;
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Uuid(StringRef const& data);
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StringRef getData() const;
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// Comparisons
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bool operator==(Uuid const& other) const;
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bool operator!=(Uuid const& other) const;
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bool operator<(Uuid const& other) const;
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bool operator<=(Uuid const& other) const;
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bool operator>(Uuid const& other) const;
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bool operator>=(Uuid const& other) const;
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private:
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Standalone<StringRef> data;
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};
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struct Tuple {
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Tuple() {}
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static Tuple unpack(StringRef const& str);
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Tuple& append(Tuple const& tuple);
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Tuple& append(StringRef const& str, bool utf8 = false);
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Tuple& append(int32_t);
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Tuple& append(int64_t);
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Tuple& append(bool);
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Tuple& append(float);
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Tuple& append(double);
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Tuple& append(Uuid);
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Tuple& appendNested(Tuple const&);
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Tuple& appendNull();
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StringRef pack() const { return StringRef(data.begin(), data.size()); }
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template <typename T>
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Tuple& operator<<(T const& t) {
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return append(t);
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}
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enum ElementType { NULL_TYPE, INT, BYTES, UTF8, BOOL, FLOAT, DOUBLE, UUID, NESTED };
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// this is number of elements, not length of data
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size_t size() const { return offsets.size(); }
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ElementType getType(size_t index) const;
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Standalone<StringRef> getString(size_t index) const;
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int64_t getInt(size_t index) const;
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bool getBool(size_t index) const;
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float getFloat(size_t index) const;
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double getDouble(size_t index) const;
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Uuid getUuid(size_t index) const;
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Tuple getNested(size_t index) const;
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KeyRange range(Tuple const& tuple = Tuple()) const;
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Tuple subTuple(size_t beginIndex, size_t endIndex = std::numeric_limits<size_t>::max()) const;
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// Comparisons
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bool operator==(Tuple const& other) const;
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bool operator!=(Tuple const& other) const;
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bool operator<(Tuple const& other) const;
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bool operator<=(Tuple const& other) const;
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bool operator>(Tuple const& other) const;
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bool operator>=(Tuple const& other) const;
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private:
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static const uint8_t NULL_CODE;
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static const uint8_t BYTES_CODE;
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static const uint8_t STRING_CODE;
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static const uint8_t NESTED_CODE;
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static const uint8_t INT_ZERO_CODE;
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static const uint8_t POS_INT_END;
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static const uint8_t NEG_INT_START;
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static const uint8_t FLOAT_CODE;
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static const uint8_t DOUBLE_CODE;
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static const uint8_t FALSE_CODE;
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static const uint8_t TRUE_CODE;
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static const uint8_t UUID_CODE;
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Tuple(const StringRef& data);
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Tuple(Standalone<VectorRef<uint8_t>> data, std::vector<size_t> offsets);
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Standalone<VectorRef<uint8_t>> data;
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std::vector<size_t> offsets;
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};
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} // namespace FDB
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#endif /* _FDB_TUPLE_H_ */
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