jasder
/
antlr
1
0
Fork 1
Code Issues Pull Requests Releases 1 Wiki Activity

Merge pull request #2101 from ewanmellor/swift-fix-uuid-extension 

Implement UUID.init(mostSigBits, leastSigBits) in the Swift runtime.
This commit is contained in:
Terence Parr 2017-11-29 09:46:29 -08:00 committed by GitHub
parent afa2574862 f36a1558ca
commit a7af99b17f
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 23 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
runtime/Swift/Sources/Antlr4/misc/extension/NSUUIDExtension.swift
View File

@ -1,41 +0,0 @@
///
/// Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
/// Use of this file is governed by the BSD 3-clause license that
/// can be found in the LICENSE.txt file in the project root.
///
//
// NSUUIDExtension.swift
// objc2swiftwithswith
//
// Created by janyou on 15/9/8.
//
import Foundation
extension UUID {
public init(mostSigBits: Int64, leastSigBits: Int64) {
let uuid: String = ""
self.init(uuidString: uuid)!
}
private func toUUID(_ mostSigBits: Int64, _ leastSigBits: Int64) -> String {
return (digits(mostSigBits >> 32, 8) + "-" +
digits(mostSigBits >> 16, 4) + "-" +
digits(mostSigBits, 4) + "-" +
digits(leastSigBits >> 48, 4) + "-" +
digits(leastSigBits, 12))
}
private func digits(_ val: Int64, _ digits: Int) -> String {
let hi = Int64(1) << Int64(digits * 4)
let intLiteral = hi | (val & (hi - 1))
let s: String = String(Character(UnicodeScalar(UInt32(intLiteral))!))
return s[1 ..< s.length]
}
}

23
runtime/Swift/Sources/Antlr4/misc/extension/UUIDExtension.swift Normal file
View File

@ -0,0 +1,23 @@
///
/// Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
/// Use of this file is governed by the BSD 3-clause license that
/// can be found in the LICENSE.txt file in the project root.
///
import Foundation
extension UUID {
public init(mostSigBits: Int64, leastSigBits: Int64) {
let bytes = UnsafeMutablePointer<UInt8>.allocate(capacity: 16)
defer {
bytes.deallocate(capacity: 16)
}
bytes.withMemoryRebound(to: Int64.self, capacity: 2) {
$0.pointee = leastSigBits
$0.advanced(by: 1).pointee = mostSigBits
}
let u = NSUUID(uuidBytes: bytes)
self.init(uuidString: u.uuidString)!
}
}