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5fe90a9160
* Implements FlatbuffersVector in swift Implements FlatbuffersVector which confirms to RandomAccessCollection, this would give us semi-native sugary syntax to all the arrays in swift port. This work will also be the foundation of using arrays in swift * Fix failing tests for Swift
70 lines
2.2 KiB
Swift
70 lines
2.2 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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import Foundation
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#if canImport(Common)
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import Common
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#endif
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public protocol FlatbuffersVectorInitializable {
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static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self
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}
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extension Scalar where Self: FlatbuffersVectorInitializable {
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public static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self {
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byteBuffer.read(def: Self.self, position: index)
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}
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}
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extension NativeStruct where Self: FlatbuffersVectorInitializable {
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public static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self {
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byteBuffer.read(def: Self.self, position: index)
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}
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}
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extension FlatBufferStruct {
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public static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self {
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Self.init(byteBuffer, o: Int32(index))
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}
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}
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extension FlatBufferTable {
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public static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self {
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return Self.init(
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byteBuffer,
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o: Int32(index) &+ byteBuffer.read(def: Int32.self, position: index))
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}
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}
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extension Optional: FlatbuffersVectorInitializable where Wrapped == String {
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public static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self {
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var index = Int32(index)
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index &+= byteBuffer.read(def: Int32.self, position: Int(index))
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let count = byteBuffer.read(def: Int32.self, position: Int(index))
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let position = Int(index) &+ MemoryLayout<Int32>.size
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return byteBuffer.readString(at: position, count: Int(count))
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}
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}
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extension Enum where Self: FlatbuffersVectorInitializable {
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public static func readFrom(byteBuffer: ByteBuffer, index: Int) -> Self {
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Self
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.init(rawValue: byteBuffer.read(def: Self.T.self, position: index)) ??
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Self.min
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}
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}
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