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42 lines
1.3 KiB
Swift
42 lines
1.3 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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/// FlatBuffersUtils hosts some utility functions that might be useful
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public enum FlatBuffersUtils {
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/// Gets the size of the prefix
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/// - Parameter bb: Flatbuffer object
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public static func getSizePrefix(bb: ByteBuffer) -> Int32 {
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bb.read(def: Int32.self, position: bb.reader)
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}
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/// Removes the prefix by duplicating the Flatbuffer this call is expensive since its
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/// creates a new buffer use `readPrefixedSizeCheckedRoot` instead
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/// unless a completely new buffer is required
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/// - Parameter bb: Flatbuffer object
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///
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///
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public static func removeSizePrefix(bb: ByteBuffer) -> ByteBuffer {
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bb.duplicate(removing: MemoryLayout<Int32>.size)
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}
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}
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