forked from BigfootDev/flatbuffers
4d6a7aa8b7
Formats the swift project Update Sample files Update docc documentation Updates swift docs in the website Updates code for Wasm
60 lines
1.9 KiB
Swift
60 lines
1.9 KiB
Swift
/*
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* Copyright 2023 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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#if !os(WASI)
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import Foundation
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#else
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import SwiftOverlayShims
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#endif
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/// Enum is a protocol that all flatbuffers enums should conform to
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/// Since it allows us to get the actual `ByteSize` and `Value` from
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/// a swift enum.
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public protocol Enum {
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/// associatedtype that the type of the enum should conform to
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associatedtype T: Scalar & Verifiable
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/// Size of the current associatedtype in the enum
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static var byteSize: Int { get }
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/// The current value the enum hosts
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var value: T { get }
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}
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extension Enum where Self: Verifiable {
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/// Verifies that the current value is which the bounds of the buffer, and if
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/// the current `Value` is aligned properly
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/// - Parameters:
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/// - verifier: Verifier that hosts the buffer
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/// - position: Current position within the buffer
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/// - type: The type of the object to be verified
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/// - Throws: Errors coming from `inBuffer` function
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public static func verify<T>(
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_ verifier: inout Verifier,
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at position: Int,
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of type: T.Type) throws where T: Verifiable
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{
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try verifier.inBuffer(position: position, of: type.self)
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}
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}
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/// UnionEnum is a Protocol that allows us to create Union type of enums
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/// and their value initializers. Since an `init` was required by
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/// the verifier
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public protocol UnionEnum: Enum {
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init?(value: T) throws
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}
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