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Encode signed Integers

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This commit is contained in:
Damiaan Dufaux 2017-07-31 18:50:39 +02:00
parent 5eddff1fdc
commit afae5bb0bc
6 changed files with 110 additions and 25 deletions
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2
MsgPack.xcodeproj/project.pbxproj
View file

@ -353,7 +353,7 @@
DYLIB_CURRENT_VERSION = 1;
DYLIB_INSTALL_NAME_BASE = "@rpath";
FRAMEWORK_VERSION = A;
GCC_OPTIMIZATION_LEVEL = 0;
GCC_OPTIMIZATION_LEVEL = fast;
INFOPLIST_FILE = MsgPack/Info.plist;
INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/../Frameworks @loader_path/Frameworks";

22
MsgPack.xcodeproj/xcshareddata/xcbaselines/74FA3B4E1F2C9060005CE521.xcbaseline/7E3EBF3D-EFD5-47DC-AE25-0C416BB7DA25.plist
View file

@ -16,6 +16,28 @@
<string>Local Baseline</string>
</dict>
</dict>
<key>testPerformanceOf1MilionUInt32Encodings()</key>
<dict>
<key>com.apple.XCTPerformanceMetric_WallClockTime</key>
<dict>
<key>baselineAverage</key>
<real>3.075</real>
<key>baselineIntegrationDisplayName</key>
<string>Local Baseline</string>
</dict>
</dict>
<key>testPerformanceOf1MilionUInt32EncodingsUsingClass()</key>
<dict>
<key>com.apple.XCTPerformanceMetric_WallClockTime</key>
<dict>
<key>baselineAverage</key>
<real>4.2</real>
<key>baselineIntegrationDisplayName</key>
<string>Local Baseline</string>
<key>maxPercentRelativeStandardDeviation</key>
<real>100</real>
</dict>
</dict>
</dict>
</dict>
</dict>

12
MsgPack/Encoder.swift
View file

@ -54,27 +54,27 @@ extension MsgPack.Serialiser: SingleValueEncodingContainer {
}
func encode(_ value: Int) throws {
throw Error.notImplemented
storage = .int(value)
}
func encode(_ value: Int8) throws {
throw Error.notImplemented
storage = .int8(value)
}
func encode(_ value: Int16) throws {
throw Error.notImplemented
storage = .int16(value)
}
func encode(_ value: Int32) throws {
throw Error.notImplemented
storage = .int32(value)
}
func encode(_ value: Int64) throws {
throw Error.notImplemented
storage = .int64(value)
}
func encode(_ value: UInt) throws {
throw Error.notImplemented
storage = .uInt(value)
}
func encode(_ value: UInt8) throws {

64
MsgPack/Format.swift
View file

@ -12,26 +12,42 @@ import Foundation
enum Format {
case `nil`
case boolean(Bool)
case positiveInt7(UInt8)
case negativeInt5(UInt8)
case uInt(UInt)
case uInt8(UInt8)
case uInt (UInt)
case uInt8 (UInt8)
case uInt16(UInt16)
case uInt32(UInt32)
case uInt64(UInt64)
case int (Int)
case int8 (Int8)
case int16(Int16)
case int32(Int32)
case int64(Int64)
func appendTo(data: inout Data) {
switch self {
// MARK: Optional
case .nil:
data.append(0xC0)
// MARK: Boolean
case .boolean(let boolean):
data.append(boolean ? 0xC3 : 0xC2)
// MARK: Small integers (< 8 bit)
case .positiveInt7(let value):
data.append(value | 0b10000000)
case .negativeInt5(let value):
data.append(value | 0b11100000)
// MARK: Unsigned integers
case .uInt8(let value):
data.append(0xCC)
data.append(value)
@ -68,6 +84,50 @@ enum Format {
#else
Format.uInt64(UInt64(value)).appendTo(data: &data)
#endif
// MARK: Signed integers
case .int8(let value):
var newData = Data(count: 2)
newData.withUnsafeMutableBytes({ (byteContainer: UnsafeMutablePointer<UInt8>) -> Void in
byteContainer.pointee = 0xD1
byteContainer.advanced(by: 1).withMemoryRebound(to: Int8.self, capacity: 1) {
$0.pointee = value.bigEndian
}
})
data.append(newData)
case .int16(let value):
var newData = Data(count: 3)
newData.withUnsafeMutableBytes({ (byteContainer: UnsafeMutablePointer<UInt8>) -> Void in
byteContainer.pointee = 0xD2
byteContainer.advanced(by: 1).withMemoryRebound(to: Int16.self, capacity: 1) {
$0.pointee = value.bigEndian
}
})
data.append(newData)
case .int32(let value):
var newData = Data(count: 5)
newData.withUnsafeMutableBytes({ (byteContainer: UnsafeMutablePointer<UInt8>) -> Void in
byteContainer.pointee = 0xD2
byteContainer.advanced(by: 1).withMemoryRebound(to: Int32.self, capacity: 1) {
$0.pointee = value.bigEndian
}
})
data.append(newData)
case .int64(let value):
var newData = Data(count: 9)
newData.withUnsafeMutableBytes({ (byteContainer: UnsafeMutablePointer<UInt8>) -> Void in
byteContainer.pointee = 0xD3
byteContainer.advanced(by: 1).withMemoryRebound(to: Int64.self, capacity: 1) {
$0.pointee = value.bigEndian
}
})
data.append(newData)
case .int(let value):
#if arch(arm) || arch(i386)
Format.int32(Int32(value)).appendTo(data: &data)
#else
Format.int64(Int64(value)).appendTo(data: &data)
#endif
}
}
}

7
MsgPackTests/MsgPackTests.swift
View file

@ -100,11 +100,10 @@ class MsgPackTests: XCTestCase {
}
}
func testPerformanceOf1MilionUInt32Encodings() {
var d = Data()
func testPerformanceOf2MilionUInt32Encodings() {
self.measure {
for _ in 0 ..< 1000000 {
Format.uInt32(136315908).appendTo(data: &d)
for _ in 0 ..< 2000000 {
try! encoder.encode(UInt32(136315908))
}
}
}

18
Playground.playground/Contents.swift
View file

@ -3,15 +3,19 @@
import MsgPack
import Foundation
var number: UInt16? = 0x0906
let encoder = Encoder()
let data = try encoder.encode(number)
let data = try encoder.encode(0x0102030405060708)
String(data[0], radix: 16)
data[1]
data[2]
data[3]
data[4]
data[5]
data[6]
data[7]
data[8]
number = nil
let data2 = try encoder.encode(number)
data2[0]
try encoder.encode(Int8(6))[1]