mirror of
https://github.com/google/flatbuffers.git
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cbf0850828
Implements InlineArrays which allow us to use Flatbuffers arrays within Structs natively, and also implements FlatbufferVectors as a secondary API when using mutable Structs Fixes mutations within fixed sizes arrays Adds tests and remove inout and mutating from generated objects in favor of borrowing --------- Co-authored-by: Wouter van Oortmerssen <aardappel@gmail.com>
64 lines
1.8 KiB
Swift
64 lines
1.8 KiB
Swift
/*
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* Copyright 2024 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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#if canImport(Common)
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import Common
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#endif
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/// Struct is a representation of a mutable `Flatbuffers` struct
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/// since native structs are value types and cant be mutated
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@frozen
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public struct Struct {
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/// Hosting Bytebuffer
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public private(set) var bb: ByteBuffer
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/// Current position of the struct
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public private(set) var position: Int32
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/// Initializer for a mutable flatbuffers struct
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/// - Parameters:
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/// - bb: Current hosting Bytebuffer
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/// - position: Current position for the struct in the ByteBuffer
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public init(bb: ByteBuffer, position: Int32 = 0) {
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self.bb = bb
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self.position = position
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}
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/// Reads data from the buffer directly at offset O
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/// - Parameters:
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/// - type: Type of data to be read
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/// - o: Current offset of the data
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/// - Returns: Data of Type T that conforms to type Scalar
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public func readBuffer<T: Scalar>(of type: T.Type, at o: Int32) -> T {
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let r = bb.read(def: T.self, position: Int(o &+ position))
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return r
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}
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public func vector<T>(
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at off: Int32,
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count: Int,
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size: Int) -> FlatbufferVector<T>
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{
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FlatbufferVector(
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bb: bb,
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startPosition: position &+ off,
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count: count,
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byteSize: size)
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}
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}
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