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Create StateStream protocol

This commit is contained in:
Aidan Woods 2018-04-23 23:45:37 +01:00
parent e612bb19ab
commit 1291f9de09
No known key found for this signature in database
GPG Key ID: 9A6A8EFAA512BBB9
2 changed files with 38 additions and 0 deletions
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6
Sodium.xcodeproj/project.pbxproj
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@ -57,6 +57,8 @@
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D85101041E22EF5B003DB2E8 /* ReadmeTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = D85101031E22EF5B003DB2E8 /* ReadmeTests.swift */; };
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@ -192,6 +194,7 @@
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@ -271,6 +274,7 @@
09A943E91A4EB70900C8A04F /* libsodium */,
09A943CC1A4EB5F500C8A04F /* Sodium.h */,
094F21E91A5017CA001C3141 /* Box.swift */,
DD1E4D05208E744100BE7A3F /* StateStream.swift */,
038365141A5A51D20081136D /* SecretBox.swift */,
0942982F1EDDAA3B001236B1 /* Stream.swift */,
095D80561A4ED0B4000B83F9 /* GenericHash.swift */,
@ -670,6 +674,7 @@
095D805D1A4F4F72000B83F9 /* Utils.swift in Sources */,
091C7CDC1A50839D002E5351 /* Sign.swift in Sources */,
A0918C781E92489100C1DC33 /* Auth.swift in Sources */,
DD1E4D06208E744100BE7A3F /* StateStream.swift in Sources */,
094298301EDDAA3B001236B1 /* Stream.swift in Sources */,
D2A274061F13AD9300958702 /* KeyDerivation.swift in Sources */,
09A5AC121F74466700D3200B /* SecretStream.swift in Sources */,
@ -721,6 +726,7 @@
90C75EE91AE3583E00F1E749 /* RandomBytes.swift in Sources */,
60C211E71EB73D3900882AD0 /* Auth.swift in Sources */,
094298311EDDAA3B001236B1 /* Stream.swift in Sources */,
DD1E4D07208E744100BE7A3F /* StateStream.swift in Sources */,
6096E7321F194FA800E6599F /* KeyDerivation.swift in Sources */,
098DAF041F76E35C00DFB1C3 /* SecretStream.swift in Sources */,
90C75EEA1AE3583E00F1E749 /* ShortHash.swift in Sources */,

32
Sodium/StateStream.swift Normal file
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@ -0,0 +1,32 @@
protocol StateStream {
associatedtype State
var capacity: Int { get }
var state: UnsafeMutablePointer<State> { get set }
}
extension StateStream {
var rawState: UnsafeMutablePointer<UInt8> {
return UnsafeMutableRawPointer(state).bindMemory(
to: UInt8.self,
capacity: capacity
)
}
func free() {
#if swift(>=4.1)
rawState.deallocate()
#else
rawState.deallocate(capacity: 1)
#endif
}
static func gen(capacity bytes: Int) -> UnsafeMutablePointer<State> {
let rawState = UnsafeMutablePointer<UInt8>.allocate(capacity: bytes)
return UnsafeMutableRawPointer(rawState).bindMemory(
to: State.self,
capacity: 1
)
}
}