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f63c130c28
Finished documenting flatbuffersbuilder Replaces swift 5.5 with 5.2 packages Starts building the tutorial for xcode 13 Finishes building the tutorial for xcode 13 Removes docc files from old swift versions Updates swift style guide
66 lines
2.2 KiB
Swift
66 lines
2.2 KiB
Swift
/*
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* Copyright 2021 Google Inc. All rights reserved.
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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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import Foundation
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/// FlatBufferGRPCMessage protocol that should allow us to invoke
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/// initializers directly from the GRPC generated code
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public protocol FlatBufferGRPCMessage {
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/// Raw pointer which would be pointing to the beginning of the readable bytes
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var rawPointer: UnsafeMutableRawPointer { get }
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/// Size of readable bytes in the buffer
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var size: Int { get }
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init(byteBuffer: ByteBuffer)
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}
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/// Message is a wrapper around Buffers to to able to send Flatbuffers `Buffers` through the
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/// GRPC library
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public struct Message<T: FlatBufferObject>: FlatBufferGRPCMessage {
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internal var buffer: ByteBuffer
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/// Returns the an object of type T that would be read from the buffer
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public var object: T {
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T.init(
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buffer,
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o: Int32(buffer.read(def: UOffset.self, position: buffer.reader)) +
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Int32(buffer.reader))
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}
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public var rawPointer: UnsafeMutableRawPointer {
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buffer.memory.advanced(by: buffer.reader) }
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public var size: Int { Int(buffer.size) }
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/// Initializes the message with the type Flatbuffer.Bytebuffer that is transmitted over
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/// GRPC
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/// - Parameter byteBuffer: Flatbuffer ByteBuffer object
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public init(byteBuffer: ByteBuffer) {
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buffer = byteBuffer
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}
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/// Initializes the message by copying the buffer to the message to be sent.
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/// from the builder
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/// - Parameter builder: FlatbufferBuilder that has the bytes created in
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/// - Note: Use `builder.finish(offset)` before passing the builder without prefixing anything to it
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public init(builder: inout FlatBufferBuilder) {
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buffer = builder.sizedBuffer
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builder.clear()
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}
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}
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