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https://github.com/kidfromjupiter/nearby.git
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84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
// Copyright 2020 Google LLC
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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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// https://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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#ifndef CORE_STRATEGY_H_
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#define CORE_STRATEGY_H_
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#include <string>
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#ifdef _WIN32 // These storage class specifiers only matter to win32 dll
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// builds.
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#ifdef CORE_ADAPTER_DLL
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#define DLL_API \
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__declspec(dllexport) // If we're building the core, we're exporting.
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#else // !CORE_ADAPTER_DLL
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#define DLL_API \
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__declspec(dllimport) // If we're not building the core, we're importing.
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#endif // CORE_ADAPTER_DLL
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#else // !_WIN32
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#define DLL_API // We're not building a win32 dll, leave the source unchanged.
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#endif // _WIN32
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namespace location {
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namespace nearby {
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namespace connections {
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// Defines a copyable, comparable connection strategy type.
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// It is one of: kP2pCluster, kP2pStar, kP2pPointToPoint.
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class DLL_API Strategy {
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public:
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static const Strategy kNone;
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static const Strategy kP2pCluster;
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static const Strategy kP2pStar;
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static const Strategy kP2pPointToPoint;
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constexpr Strategy() : Strategy(kNone) {}
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constexpr Strategy(const Strategy&) = default;
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constexpr Strategy& operator=(const Strategy&) = default;
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// Returns true, if strategy is kNone, false otherwise.
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bool IsNone() const;
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// Returns true, if a strategy is one of the supported strategies,
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// false otherwise.
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bool IsValid() const;
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// Returns a string representing given strategy, for every valid strategy.
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std::string GetName() const;
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// Undefine strategy.
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void Clear() { *this = kNone; }
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friend bool operator==(const Strategy& lhs, const Strategy& rhs);
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friend bool operator!=(const Strategy& lhs, const Strategy& rhs);
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private:
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enum class ConnectionType {
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kNone = 0,
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kPointToPoint = 1,
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};
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enum class TopologyType {
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kUnknown = 0,
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kOneToOne = 1,
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kOneToMany = 2,
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kManyToMany = 3,
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};
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constexpr Strategy(ConnectionType connection_type, TopologyType topology_type)
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: connection_type_(connection_type), topology_type_(topology_type) {}
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ConnectionType connection_type_;
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TopologyType topology_type_;
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};
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} // namespace connections
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} // namespace nearby
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} // namespace location
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#endif // CORE_STRATEGY_H_
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