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Encode floats

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This commit is contained in:
Damiaan Dufaux 2017-07-31 19:17:26 +02:00
parent afae5bb0bc
commit 112d35f359
3 changed files with 45 additions and 13 deletions
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4
MsgPack/Encoder.swift
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@ -94,11 +94,11 @@ extension MsgPack.Serialiser: SingleValueEncodingContainer {
}
func encode(_ value: Float) throws {
throw Error.notImplemented
storage = .float32(value)
}
func encode(_ value: Double) throws {
throw Error.notImplemented
storage = .float64(value)
}
func encode(_ value: String) throws {

23
MsgPack/Format.swift
View file

@ -29,6 +29,9 @@ enum Format {
case int16(Int16)
case int32(Int32)
case int64(Int64)
case float32(Float)
case float64(Double)
func appendTo(data: inout Data) {
switch self {
@ -128,6 +131,26 @@ enum Format {
#else
Format.int64(Int64(value)).appendTo(data: &data)
#endif
// MARK: Floats
case .float32(let value):
var newData = Data(count: 5)
newData.withUnsafeMutableBytes({ (byteContainer: UnsafeMutablePointer<UInt8>) -> Void in
byteContainer.pointee = 0xCA
byteContainer.advanced(by: 1).withMemoryRebound(to: UInt32.self, capacity: 1) {
$0.pointee = value.bitPattern.bigEndian
}
})
data.append(newData)
case .float64(let value):
var newData = Data(count: 9)
newData.withUnsafeMutableBytes({ (byteContainer: UnsafeMutablePointer<UInt8>) -> Void in
byteContainer.pointee = 0xCB
byteContainer.advanced(by: 1).withMemoryRebound(to: UInt64.self, capacity: 1) {
$0.pointee = value.bitPattern.bigEndian
}
})
data.append(newData)
}
}
}

31
Playground.playground/Contents.swift
View file

@ -5,17 +5,26 @@ import Foundation
let encoder = Encoder()
let data = try encoder.encode(0x0102030405060708)
let integerData = try encoder.encode(0x0102030405060708)
String(data[0], radix: 16)
String(integerData[0], radix: 16)
data[1]
data[2]
data[3]
data[4]
data[5]
data[6]
data[7]
data[8]
integerData[1]
integerData[2]
integerData[3]
integerData[4]
integerData[5]
integerData[6]
integerData[7]
integerData[8]
try encoder.encode(Int8(6))[1]
let doubleData = try encoder.encode(2.5)
String(doubleData[0], radix: 16)
doubleData[1]
doubleData[2]
doubleData[3]
doubleData[4]
doubleData[5]
doubleData[6]
doubleData[7]
doubleData[8]