PointerType.swift
1.07 KB
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
/*
* Copyright 1999-2101 Alibaba Group.
*
* 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.
*/
//
// Created by zhouzhuo on 07/01/2017.
//
protocol PointerType : Equatable {
associatedtype Pointee
var pointer: UnsafePointer<Pointee> { get set }
}
extension PointerType {
init<T>(pointer: UnsafePointer<T>) {
func cast<T, U>(_ value: T) -> U {
return unsafeBitCast(value, to: U.self)
}
self = cast(UnsafePointer<Pointee>(pointer))
}
}
func == <T: PointerType>(lhs: T, rhs: T) -> Bool {
return lhs.pointer == rhs.pointer
}