| /* |
| * Copyright 2023 Google Inc. All rights reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #if !os(WASI) |
| import Foundation |
| #else |
| import SwiftOverlayShims |
| #endif |
| |
| /// FlatBuffersUtils hosts some utility functions that might be useful |
| public enum FlatBuffersUtils { |
| |
| /// Gets the size of the prefix |
| /// - Parameter bb: Flatbuffer object |
| public static func getSizePrefix(bb: ByteBuffer) -> Int32 { |
| bb.read(def: Int32.self, position: bb.reader) |
| } |
| |
| /// Removes the prefix by duplicating the Flatbuffer this call is expensive since its |
| /// creates a new buffer use `readPrefixedSizeCheckedRoot` instead |
| /// unless a completely new buffer is required |
| /// - Parameter bb: Flatbuffer object |
| /// |
| /// |
| public static func removeSizePrefix(bb: ByteBuffer) -> ByteBuffer { |
| bb.duplicate(removing: MemoryLayout<Int32>.size) |
| } |
| } |
