119 lines
3.3 KiB
C++
119 lines
3.3 KiB
C++
/*
|
|
* Tuple.h
|
|
*
|
|
* This source file is part of the FoundationDB open source project
|
|
*
|
|
* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
|
|
*
|
|
* Licensed 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.
|
|
*/
|
|
|
|
#ifndef FDB_FLOW_TUPLE_H
|
|
#define FDB_FLOW_TUPLE_H
|
|
|
|
#pragma once
|
|
|
|
#include "bindings/flow/fdb_flow.h"
|
|
|
|
namespace FDB {
|
|
struct Uuid {
|
|
const static size_t SIZE;
|
|
|
|
Uuid(StringRef const& data);
|
|
|
|
StringRef getData() const;
|
|
|
|
// Comparisons
|
|
bool operator==(Uuid const& other) const;
|
|
bool operator!=(Uuid const& other) const;
|
|
bool operator<(Uuid const& other) const;
|
|
bool operator<=(Uuid const& other) const;
|
|
bool operator>(Uuid const& other) const;
|
|
bool operator>=(Uuid const& other) const;
|
|
|
|
private:
|
|
Standalone<StringRef> data;
|
|
};
|
|
|
|
struct Tuple {
|
|
Tuple() {}
|
|
|
|
static Tuple unpack(StringRef const& str);
|
|
|
|
Tuple& append(Tuple const& tuple);
|
|
Tuple& append(StringRef const& str, bool utf8 = false);
|
|
Tuple& append(int32_t);
|
|
Tuple& append(int64_t);
|
|
Tuple& append(bool);
|
|
Tuple& append(float);
|
|
Tuple& append(double);
|
|
Tuple& append(Uuid);
|
|
Tuple& appendNested(Tuple const&);
|
|
Tuple& appendNull();
|
|
|
|
StringRef pack() const { return StringRef(data.begin(), data.size()); }
|
|
|
|
template <typename T>
|
|
Tuple& operator<<(T const& t) {
|
|
return append(t);
|
|
}
|
|
|
|
enum ElementType { NULL_TYPE, INT, BYTES, UTF8, BOOL, FLOAT, DOUBLE, UUID, NESTED };
|
|
|
|
// this is number of elements, not length of data
|
|
size_t size() const { return offsets.size(); }
|
|
|
|
ElementType getType(size_t index) const;
|
|
Standalone<StringRef> getString(size_t index) const;
|
|
int64_t getInt(size_t index) const;
|
|
bool getBool(size_t index) const;
|
|
float getFloat(size_t index) const;
|
|
double getDouble(size_t index) const;
|
|
Uuid getUuid(size_t index) const;
|
|
Tuple getNested(size_t index) const;
|
|
|
|
KeyRange range(Tuple const& tuple = Tuple()) const;
|
|
|
|
Tuple subTuple(size_t beginIndex, size_t endIndex = std::numeric_limits<size_t>::max()) const;
|
|
|
|
// Comparisons
|
|
bool operator==(Tuple const& other) const;
|
|
bool operator!=(Tuple const& other) const;
|
|
bool operator<(Tuple const& other) const;
|
|
bool operator<=(Tuple const& other) const;
|
|
bool operator>(Tuple const& other) const;
|
|
bool operator>=(Tuple const& other) const;
|
|
|
|
private:
|
|
static const uint8_t NULL_CODE;
|
|
static const uint8_t BYTES_CODE;
|
|
static const uint8_t STRING_CODE;
|
|
static const uint8_t NESTED_CODE;
|
|
static const uint8_t INT_ZERO_CODE;
|
|
static const uint8_t POS_INT_END;
|
|
static const uint8_t NEG_INT_START;
|
|
static const uint8_t FLOAT_CODE;
|
|
static const uint8_t DOUBLE_CODE;
|
|
static const uint8_t FALSE_CODE;
|
|
static const uint8_t TRUE_CODE;
|
|
static const uint8_t UUID_CODE;
|
|
|
|
Tuple(const StringRef& data);
|
|
Tuple(Standalone<VectorRef<uint8_t>> data, std::vector<size_t> offsets);
|
|
Standalone<VectorRef<uint8_t>> data;
|
|
std::vector<size_t> offsets;
|
|
};
|
|
} // namespace FDB
|
|
|
|
#endif /* _FDB_TUPLE_H_ */
|