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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
49 lines
1.3 KiB
Swift
49 lines
1.3 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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@usableFromInline
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enum BitWidth: UInt64, CaseIterable {
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case w8 = 0, w16 = 1, w32 = 2, w64 = 3
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}
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extension BitWidth: Comparable {
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@usableFromInline
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static func < (lhs: BitWidth, rhs: BitWidth) -> Bool {
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lhs.rawValue < rhs.rawValue
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}
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@inline(__always)
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static func widthB(_ v: Int) -> BitWidth {
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switch v {
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case 1: return .w8
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case 2: return .w16
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case 4: return .w32
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case 8: return .w64
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default:
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assert(false, "We shouldn't reach here")
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return .w64
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}
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}
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@inline(__always)
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static func max(_ lhs: BitWidth, rhs: BitWidth) -> BitWidth {
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if lhs.rawValue > rhs.rawValue { return lhs }
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return rhs
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}
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}
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