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Dev: add Data encoding/decoding

This commit is contained in:
Andrew Druk 2017-12-29 17:52:03 +02:00
parent fc83412915
commit 9a361dbac5
3 changed files with 28 additions and 0 deletions
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4
Sources/JNIArgumentProtocol.swift
View File

@ -16,6 +16,10 @@ public protocol JNIArgumentProtocol {
public struct jnull: JNIArgumentProtocol {
let className: String
public init() {
className = ""
}
public func value(locals: UnsafeMutablePointer<[jobject]>) -> jvalue {
return jvalue()

4
Sources/JNICore+JavaCoder.swift
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@ -24,6 +24,7 @@ let SetClassname = "java/util/Set"
let UriClassname = "android/net/Uri"
let DateClassname = "java/util/Date"
let HashSetClassname = "java/util/HashSet"
let ByteBufferClassname = "java/nio/ByteBuffer"
// MARK: Java Classes
var IntegerClass = try! JNI.getJavaClass("java/lang/Integer")
@ -38,6 +39,7 @@ let UriClass = try! JNI.getJavaClass("android/net/Uri")
let DateClass = try! JNI.getJavaClass("java/util/Date")
let VMDebugClass = try! JNI.getJavaClass("dalvik/system/VMDebug")
let HashSetClass = try! JNI.getJavaClass("java/util/HashSet")
let ByteBufferClass = try! JNI.getJavaClass("java/nio/ByteBuffer")
// MARK: Java methods
let UriConstructor = JNI.api.GetStaticMethodID(JNI.env, UriClass, "parse", "(Ljava/lang/String;)Landroid/net/Uri;")
@ -71,6 +73,8 @@ let CollectionSizeMethod = try! JNI.getJavaMethod(forClass: "java/util/Collectio
let IteratorNextMethod = try! JNI.getJavaMethod(forClass: "java/util/Iterator", method: "next", sig: "()Ljava/lang/Object;")
let DateGetTimeMethod = try! JNI.getJavaMethod(forClass: "java/util/Date", method: "getTime", sig:"()J")
let VMDebugDumpReferenceTablesMethod = JNI.api.GetStaticMethodID(JNI.env, VMDebugClass, "dumpReferenceTables", "()V")
let ByteBufferArray = try! JNI.getJavaMethod(forClass: "java/nio/ByteBuffer", method: "array", sig: "()[B")
let ByteBufferWrap = JNI.api.GetStaticMethodID(JNI.env, ByteBufferClass, "wrap", "([B)Ljava/nio/ByteBuffer;")!
fileprivate extension NSLock {

20
Sources/JavaCoderConfig.swift
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@ -4,6 +4,7 @@
import Foundation
import java_swift
import CJavaVM
public typealias JavaEncodableClosure = (Encodable) throws -> jobject
public typealias JavaDecodableClosure = (jobject) throws -> Decodable
@ -154,6 +155,25 @@ public struct JavaCoderConfig {
let pathString = JNI.api.CallObjectMethodA(JNI.env, $0, ObjectToStringMethod, nil)
return URL(string: String(javaObject: pathString))
})
RegisterType(type: Data.self, javaClassname: ByteBufferClassname, encodableClosure: {
let valueData = $0 as! Data
let byteArray = JNI.api.NewByteArray(JNI.env, valueData.count)!
valueData.withUnsafeBytes({ (pointer: UnsafePointer<Int8>) -> Void in
JNI.api.SetByteArrayRegion(JNI.env, byteArray, 0, valueData.count, pointer)
})
return JNI.CallStaticObjectMethod(ByteBufferClass, methodID: ByteBufferWrap, args: [jvalue(l: byteArray)])!
}, decodableClosure: {
let byteArray = JNI.CallObjectMethod($0, methodID: ByteBufferArray)
guard let pointer = JNI.api.GetByteArrayElements(JNI.env, byteArray, nil) else {
throw JavaCodingError.cantFindObject("ByteBuffer")
}
let length = JNI.api.GetArrayLength(JNI.env, byteArray)
defer {
JNI.api.ReleaseByteArrayElements(JNI.env, byteArray, pointer, 0)
}
return Data.init(bytes: pointer, count: length)
})
}
}