1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
/*
* 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(WASI)
#if os(Linux)
import CoreFoundation
#else
import Foundation
#endif
#else
import SwiftOverlayShims
#endif
/// A boolean to see if the system is littleEndian
let isLitteEndian: Bool = {
let number: UInt32 = 0x12345678
return number == number.littleEndian
}()
/// 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_8() {}
|
