mirror of
https://github.com/google/flatbuffers.git
synced 2026-06-03 12:21:23 +00:00
f63c130c28
Finished documenting flatbuffersbuilder Replaces swift 5.5 with 5.2 packages Starts building the tutorial for xcode 13 Finishes building the tutorial for xcode 13 Removes docc files from old swift versions Updates swift style guide
117 lines
2.9 KiB
Swift
117 lines
2.9 KiB
Swift
/*
|
|
* Copyright 2021 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(Linux)
|
|
import CoreFoundation
|
|
#else
|
|
import Foundation
|
|
#endif
|
|
|
|
/// A boolean to see if the system is littleEndian
|
|
let isLitteEndian = CFByteOrderGetCurrent() ==
|
|
Int(CFByteOrderLittleEndian.rawValue)
|
|
/// Constant for the file id length
|
|
let FileIdLength = 4
|
|
/// Type aliases
|
|
public typealias Byte = UInt8
|
|
public typealias UOffset = UInt32
|
|
public typealias SOffset = Int32
|
|
public typealias VOffset = UInt16
|
|
/// Maximum size for a buffer
|
|
public let FlatBufferMaxSize = UInt32
|
|
.max << ((MemoryLayout<SOffset>.size * 8 - 1) - 1)
|
|
|
|
/// Protocol that All Scalars should conform to
|
|
///
|
|
/// Scalar is used to conform all the numbers that can be represented in a FlatBuffer. It's used to write/read from the buffer.
|
|
public protocol Scalar: Equatable {
|
|
associatedtype NumericValue
|
|
var convertedEndian: NumericValue { get }
|
|
}
|
|
|
|
extension Scalar where Self: Verifiable {}
|
|
|
|
extension Scalar where Self: FixedWidthInteger {
|
|
/// Converts the value from BigEndian to LittleEndian
|
|
///
|
|
/// Converts values to little endian on machines that work with BigEndian, however this is NOT TESTED yet.
|
|
public var convertedEndian: NumericValue {
|
|
self as! Self.NumericValue
|
|
}
|
|
}
|
|
|
|
extension Double: Scalar, Verifiable {
|
|
public typealias NumericValue = UInt64
|
|
|
|
public var convertedEndian: UInt64 {
|
|
bitPattern.littleEndian
|
|
}
|
|
}
|
|
|
|
extension Float32: Scalar, Verifiable {
|
|
public typealias NumericValue = UInt32
|
|
|
|
public var convertedEndian: UInt32 {
|
|
bitPattern.littleEndian
|
|
}
|
|
}
|
|
|
|
extension Bool: Scalar, Verifiable {
|
|
public var convertedEndian: UInt8 {
|
|
self == true ? 1 : 0
|
|
}
|
|
|
|
public typealias NumericValue = UInt8
|
|
}
|
|
|
|
extension Int: Scalar, Verifiable {
|
|
public typealias NumericValue = Int
|
|
}
|
|
|
|
extension Int8: Scalar, Verifiable {
|
|
public typealias NumericValue = Int8
|
|
}
|
|
|
|
extension Int16: Scalar, Verifiable {
|
|
public typealias NumericValue = Int16
|
|
}
|
|
|
|
extension Int32: Scalar, Verifiable {
|
|
public typealias NumericValue = Int32
|
|
}
|
|
|
|
extension Int64: Scalar, Verifiable {
|
|
public typealias NumericValue = Int64
|
|
}
|
|
|
|
extension UInt8: Scalar, Verifiable {
|
|
public typealias NumericValue = UInt8
|
|
}
|
|
|
|
extension UInt16: Scalar, Verifiable {
|
|
public typealias NumericValue = UInt16
|
|
}
|
|
|
|
extension UInt32: Scalar, Verifiable {
|
|
public typealias NumericValue = UInt32
|
|
}
|
|
|
|
extension UInt64: Scalar, Verifiable {
|
|
public typealias NumericValue = UInt64
|
|
}
|
|
|
|
public func FlatBuffersVersion_2_0_0() {}
|