mirror of
https://github.com/kidfromjupiter/nearby.git
synced 2026-09-15 15:16:12 -04:00
Alexey Polyudov
de31c27947
Signed-off-by: Alexey Polyudov <apolyudov@google.com> Change-Id: I85d490e448375aa4eb7b09680757c02fff1420b4
101 lines
2.7 KiB
C++
101 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_PAYLOAD_H_
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#define CORE_PAYLOAD_H_
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#include <cstdint>
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#include "platform/api/input_file.h"
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#include "platform/api/input_stream.h"
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#include "platform/byte_array.h"
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#include "platform/ptr.h"
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namespace location {
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namespace nearby {
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namespace connections {
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class Payload {
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public:
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struct Type {
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enum Value { UNKNOWN = 0, BYTES = 1, FILE = 2, STREAM = 3 };
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};
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class Stream {
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public:
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Ptr<InputStream> asInputStream() const;
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private:
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template <typename>
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friend class InternalPayloadFactory;
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friend class Payload;
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explicit Stream(Ptr<InputStream> input_stream);
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ScopedPtr<Ptr<InputStream> > input_stream_;
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};
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class File {
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public:
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Ptr<InputFile> asInputFile() const;
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private:
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template <typename>
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friend class InternalPayloadFactory;
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friend class Payload;
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explicit File(const Ptr<InputFile>& input_file);
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ScopedPtr<Ptr<InputFile> > input_file_;
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};
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static Ptr<Payload> fromBytes(ConstPtr<ByteArray> bytes);
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static Ptr<Payload> fromStream(Ptr<InputStream> input_stream);
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static Ptr<Payload> fromFile(const Ptr<InputFile>& input_file);
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ConstPtr<ByteArray> asBytes() const;
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ConstPtr<Stream> asStream() const;
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ConstPtr<File> asFile() const;
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// For when clients of this class want to assume ownership of the
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// ConstPtr<ByteArray> that represents a BYTES Payload.
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ConstPtr<ByteArray> releaseBytes() const;
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std::int64_t getId() const;
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Type::Value getType() const;
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private:
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template <typename>
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friend class InternalPayloadFactory;
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static std::int64_t generateId();
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Payload(std::int64_t id, ConstPtr<ByteArray> bytes);
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Payload(std::int64_t id, ConstPtr<Stream> stream);
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Payload(std::int64_t id, ConstPtr<File> file);
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std::int64_t id_;
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Type::Value type_;
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// This field is mutable because of releaseBytes(), which is just a physically
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// non-const operation that doesn't alter the conceptual const-ness of the
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// Payload object.
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mutable ScopedPtr<ConstPtr<ByteArray> > bytes_;
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ScopedPtr<ConstPtr<File> > file_;
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ScopedPtr<ConstPtr<Stream> > stream_;
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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_PAYLOAD_H_
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