mirror of
https://github.com/google/flatbuffers.git
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5a95b7b6bc
* Offical Swift port for FlexBuffers This is the offical port for FlexBuffers within swift, and it introcudes a Common Module where code is shared between flatbuffers and flexbuffers. Writing most supported values like maps, vectors, nil and scalars into a flexbuffer buffer. And includes tests to verify that its similar to cpp * Reading a flexbuffer Implementing reading from a flexbuffer, enabling most of the buffers features, like most types, maps, vectors, typedvectors, and fixedtypedvectors. Currently, if an offset/object cant be read we default to a swift nil instead of the default flexbuffers 'null' with all values. * Fixes bazel breaking due to new project structure Address warnings within the library * Adds comment on why we added the code & properly enforce the amout of bytes needed
44 lines
1.2 KiB
Swift
44 lines
1.2 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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protocol Sized {
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var byteBuffer: ByteBuffer { get }
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var offset: Int { get }
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var byteWidth: UInt8 { get }
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var count: Int { get }
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}
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extension Sized {
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@inline(__always)
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func getReference(at index: Int) -> Reference? {
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if index >= count { return nil }
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let bWidth = Int(byteWidth)
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let packedType = byteBuffer.read(
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def: UInt8.self,
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position: (offset &+ (count &* bWidth)) &+ index)
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let offset = offset &+ (index &* bWidth)
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return Reference(
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byteBuffer: byteBuffer,
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offset: offset,
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parentWidth: byteWidth,
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packedType: packedType)
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}
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}
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