| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| |
| /** |
| * @file |
| * Declares ignite::Guid class. |
| */ |
| |
| #ifndef _IGNITE_GUID |
| #define _IGNITE_GUID |
| |
| #include <stdint.h> |
| #include <iomanip> |
| |
| #include <ignite/common/common.h> |
| |
| namespace ignite |
| { |
| /** |
| * Global universally unique identifier (GUID). |
| */ |
| class IGNITE_IMPORT_EXPORT Guid |
| { |
| public: |
| /** |
| * Default constructor. |
| */ |
| Guid(); |
| |
| /** |
| * Constructor. |
| * |
| * @param most Most significant bits. |
| * @param least Least significant bits. |
| */ |
| Guid(int64_t most, int64_t least); |
| |
| /** |
| * Returns the most significant 64 bits of this instance. |
| * |
| * @return The most significant 64 bits of this instance. |
| */ |
| int64_t GetMostSignificantBits() const; |
| |
| /** |
| * Returns the least significant 64 bits of this instance. |
| * |
| * @return The least significant 64 bits of this instance. |
| */ |
| int64_t GetLeastSignificantBits() const; |
| |
| /** |
| * The version number associated with this instance. The version |
| * number describes how this Guid was generated. |
| * |
| * The version number has the following meaning: |
| * 1 Time-based UUID; |
| * 2 DCE security UUID; |
| * 3 Name-based UUID; |
| * 4 Randomly generated UUID. |
| * |
| * @return The version number of this instance. |
| */ |
| int32_t GetVersion() const; |
| |
| /** |
| * The variant number associated with this instance. The variant |
| * number describes the layout of the Guid. |
| * |
| * The variant number has the following meaning: |
| * 0 Reserved for NCS backward compatibility; |
| * 2 IETF RFC 4122 (Leach-Salz), used by this class; |
| * 6 Reserved, Microsoft Corporation backward compatibility; |
| * 7 Reserved for future definition. |
| * |
| * @return The variant number of this instance. |
| */ |
| int32_t GetVariant() const; |
| |
| /** |
| * Get hash code of this instance (used in serialization). |
| * |
| * @return Hash code. |
| */ |
| int32_t GetHashCode() const; |
| |
| /** |
| * Comparison operator override. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if equal. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator== (const Guid& val1, const Guid& val2); |
| |
| /** |
| * Compare to another value. |
| * |
| * @param other Instance to compare to. |
| * @return Zero if equals, negative number if less and positive if more. |
| */ |
| int64_t Compare(const Guid& other) const; |
| |
| /** |
| * Comparison operator. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if equal. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator==(const Guid& val1, const Guid& val2); |
| |
| /** |
| * Comparison operator. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if not equal. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator!=(const Guid& val1, const Guid& val2); |
| |
| /** |
| * Comparison operator. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if less. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator<(const Guid& val1, const Guid& val2); |
| |
| /** |
| * Comparison operator. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if less or equal. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator<=(const Guid& val1, const Guid& val2); |
| |
| /** |
| * Comparison operator. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if greater. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator>(const Guid& val1, const Guid& val2); |
| |
| /** |
| * Comparison operator. |
| * |
| * @param val1 First value. |
| * @param val2 Second value. |
| * @return True if greater or equal. |
| */ |
| friend bool IGNITE_IMPORT_EXPORT operator>=(const Guid& val1, const Guid& val2); |
| |
| private: |
| /** Most significant bits. */ |
| int64_t most; |
| |
| /** Least significant bits. */ |
| int64_t least; |
| }; |
| |
| /** |
| * Output operator. |
| * |
| * @param os Output stream. |
| * @param guid Guid to output. |
| * @return Reference to the first param. |
| */ |
| template<typename C> |
| ::std::basic_ostream<C>& operator<<(std::basic_ostream<C>& os, const Guid& guid) |
| { |
| uint32_t part1 = static_cast<uint32_t>(guid.GetMostSignificantBits() >> 32); |
| uint16_t part2 = static_cast<uint16_t>(guid.GetMostSignificantBits() >> 16); |
| uint16_t part3 = static_cast<uint16_t>(guid.GetMostSignificantBits()); |
| uint16_t part4 = static_cast<uint16_t>(guid.GetLeastSignificantBits() >> 48); |
| uint64_t part5 = guid.GetLeastSignificantBits() & 0x0000FFFFFFFFFFFFU; |
| |
| os << std::hex |
| << std::setfill<C>('0') << std::setw(8) << part1 << '-' |
| << std::setfill<C>('0') << std::setw(4) << part2 << '-' |
| << std::setfill<C>('0') << std::setw(4) << part3 << '-' |
| << std::setfill<C>('0') << std::setw(4) << part4 << '-' |
| << std::setfill<C>('0') << std::setw(12) << part5 << std::dec; |
| |
| return os; |
| } |
| |
| /** |
| * Input operator. |
| * |
| * @param is Input stream. |
| * @param guid Guid to input. |
| * @return Reference to the first param. |
| */ |
| template<typename C> |
| ::std::basic_istream<C>& operator>>(std::basic_istream<C>& is, Guid& guid) |
| { |
| uint64_t parts[5]; |
| |
| C delim; |
| |
| for (int i = 0; i < 4; ++i) |
| { |
| is >> std::hex >> parts[i] >> delim; |
| |
| if (delim != static_cast<C>('-')) |
| return is; |
| } |
| |
| is >> std::hex >> parts[4]; |
| |
| guid = Guid((parts[0] << 32) | (parts[1] << 16) | parts[2], (parts[3] << 48) | parts[4]); |
| |
| return is; |
| } |
| } |
| |
| #endif |