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JavaKit: Enable imported Java classes as Swift classes by default
Flip the switch to have Java2Swift generate Swift classes to represent each imported Java class, and make the (relatively few) adjustments needed to the JavaKit library to make that work. Implements issue #132.
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lines changed

‎Sources/Java2Swift/JavaToSwift.swift‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -184,7 +184,7 @@ struct JavaToSwift: ParsableCommand {
184184
let translator = JavaTranslator(
185185
swiftModuleName: moduleName,
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environment: environment,
187-
translateAsClass: false
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translateAsClass: true
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)
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// Keep track of all of the Java classes that will have

‎Sources/JavaKit/AnyJavaObject.swift‎

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Original file line numberDiff line numberDiff line change
@@ -42,9 +42,6 @@ public protocol AnyJavaObject {
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/// Retrieve the full Java class name (e.g., java.util.Vector)
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static var fullJavaClassName: String { get }
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45-
/// The Java superclass type
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associatedtype JavaSuperclass: AnyJavaObject
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/// Initialize a Java object from the Swift instance that keeps it alive.
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init(javaHolder: JavaObjectHolder)
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‎Sources/JavaKit/Exceptions/Exception+Error.swift‎

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Original file line numberDiff line numberDiff line change
@@ -12,13 +12,6 @@
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//
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//===----------------------------------------------------------------------===//
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15-
// Translate all Java Exception instances in a Swift error.
16-
extension Exception: Error, CustomStringConvertible {
17-
public var description: String {
18-
return getMessage()
19-
}
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}
21-
2215
extension JavaClass<Exception> {
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/// Determine whether this instance is a checked exception (which must be
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/// handled) vs. an unchecked exception (which is not handled).

‎Sources/JavaKit/JavaClass+Initialization.swift‎

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Original file line numberDiff line numberDiff line change
@@ -18,7 +18,8 @@ extension JavaClass {
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public typealias ObjectType = T
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/// Lookup this Java class within the given environment.
21-
public init(environment: JNIEnvironment? = nil) throws {
21+
@_nonoverride
22+
public convenience init(environment: JNIEnvironment? = nil) throws {
2223
let environment = try environment ?? JavaVirtualMachine.shared().environment()
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self.init(
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javaThis: try ObjectType.getJNIClass(in: environment),

‎Sources/JavaKit/JavaObject+Inheritance.swift‎

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Original file line numberDiff line numberDiff line change
@@ -15,11 +15,6 @@
1515
import JavaRuntime
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1717
extension AnyJavaObject {
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/// Retrieve the same object instance but with the superclass type.
19-
public var `super`: JavaSuperclass {
20-
JavaSuperclass(javaHolder: javaHolder)
21-
}
22-
2318
/// Look up the other class type
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///
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/// - Returns: `nil` when either `OtherClass` isn't known to the

‎Sources/JavaKit/JavaObject+MethodCalls.swift‎

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Original file line numberDiff line numberDiff line change
@@ -387,7 +387,7 @@ extension JavaClass {
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return FieldType(fromJNI: jniMethod(javaEnvironment, javaThis, fieldID), in: javaEnvironment)
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}
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390-
nonmutating set {
390+
set {
391391
let fieldID = getJNIStaticFieldID(fieldName, fieldType: fieldType)!
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let jniMethod = FieldType.jniStaticFieldSet(in: javaEnvironment)
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jniMethod(javaEnvironment, javaThis, fieldID, newValue.getJNIValue(in: javaEnvironment))

‎Sources/JavaKit/generated/Exception.swift‎

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Original file line numberDiff line numberDiff line change
@@ -1,68 +1,17 @@
11
// Auto-generated by Java-to-Swift wrapper generator.
22
import JavaRuntime
33

4-
@JavaClass("java.lang.Exception", extends: Throwable.self)
5-
public struct Exception {
4+
@JavaClass("java.lang.Exception")
5+
open class Exception: Throwable {
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@JavaMethod
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public init(_ arg0: Throwable?, environment: JNIEnvironment? = nil)
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@_nonoverride public convenience init(_ arg0: Throwable?, environment: JNIEnvironment? = nil)
88

99
@JavaMethod
10-
public init(_ arg0: String, _ arg1: Throwable?, environment: JNIEnvironment? = nil)
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@_nonoverride public convenience init(_ arg0: String, _ arg1: Throwable?, environment: JNIEnvironment? = nil)
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@JavaMethod
13-
public init(_ arg0: String, environment: JNIEnvironment? = nil)
13+
@_nonoverride public convenience init(_ arg0: String, environment: JNIEnvironment? = nil)
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1515
@JavaMethod
16-
public init(environment: JNIEnvironment? = nil)
17-
18-
@JavaMethod
19-
public func printStackTrace()
20-
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@JavaMethod
22-
public func fillInStackTrace() -> Throwable!
23-
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@JavaMethod
25-
public func getCause() -> Throwable!
26-
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@JavaMethod
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public func initCause(_ arg0: Throwable?) -> Throwable!
29-
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@JavaMethod
31-
public func toString() -> String
32-
33-
@JavaMethod
34-
public func getMessage() -> String
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@JavaMethod
37-
public func getSuppressed() -> [Throwable?]
38-
39-
@JavaMethod
40-
public func getLocalizedMessage() -> String
41-
42-
@JavaMethod
43-
public func addSuppressed(_ arg0: Throwable?)
44-
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@JavaMethod
46-
public func equals(_ arg0: JavaObject?) -> Bool
47-
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@JavaMethod
49-
public func hashCode() -> Int32
50-
51-
@JavaMethod
52-
public func getClass() -> JavaClass<JavaObject>!
53-
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@JavaMethod
55-
public func notify()
56-
57-
@JavaMethod
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public func notifyAll()
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@JavaMethod
61-
public func wait(_ arg0: Int64) throws
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63-
@JavaMethod
64-
public func wait(_ arg0: Int64, _ arg1: Int32) throws
65-
66-
@JavaMethod
67-
public func wait() throws
16+
@_nonoverride public convenience init(environment: JNIEnvironment? = nil)
6817
}

‎Sources/JavaKit/generated/JavaArray.swift‎

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Original file line numberDiff line numberDiff line change
@@ -1,34 +1,9 @@
11
// Auto-generated by Java-to-Swift wrapper generator.
22
import JavaRuntime
33

4-
@JavaClass("java.lang.reflect.Array", extends: JavaObject.self)
5-
public struct JavaArray {
6-
@JavaMethod
7-
public func equals(_ arg0: JavaObject?) -> Bool
4+
@JavaClass("java.lang.reflect.Array")
5+
open class JavaArray: JavaObject {
86

9-
@JavaMethod
10-
public func toString() -> String
11-
12-
@JavaMethod
13-
public func hashCode() -> Int32
14-
15-
@JavaMethod
16-
public func getClass() -> JavaClass<JavaObject>!
17-
18-
@JavaMethod
19-
public func notify()
20-
21-
@JavaMethod
22-
public func notifyAll()
23-
24-
@JavaMethod
25-
public func wait(_ arg0: Int64) throws
26-
27-
@JavaMethod
28-
public func wait(_ arg0: Int64, _ arg1: Int32) throws
29-
30-
@JavaMethod
31-
public func wait() throws
327
}
338
extension JavaClass<JavaArray> {
349
@JavaStaticMethod

‎Sources/JavaKit/generated/JavaBoolean.swift‎

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Original file line numberDiff line numberDiff line change
@@ -1,49 +1,31 @@
11
// Auto-generated by Java-to-Swift wrapper generator.
22
import JavaRuntime
33

4-
@JavaClass("java.lang.Boolean", extends: JavaObject.self)
5-
public struct JavaBoolean {
4+
@JavaClass("java.lang.Boolean")
5+
open class JavaBoolean: JavaObject {
66
@JavaMethod
7-
public init(_ arg0: Bool, environment: JNIEnvironment? = nil)
7+
@_nonoverride public convenience init(_ arg0: Bool, environment: JNIEnvironment? = nil)
88

99
@JavaMethod
10-
public init(_ arg0: String, environment: JNIEnvironment? = nil)
10+
@_nonoverride public convenience init(_ arg0: String, environment: JNIEnvironment? = nil)
1111

1212
@JavaMethod
13-
public func equals(_ arg0: JavaObject?) -> Bool
13+
open override func equals(_ arg0: JavaObject?) -> Bool
1414

1515
@JavaMethod
16-
public func toString() -> String
16+
open override func toString() -> String
1717

1818
@JavaMethod
19-
public func hashCode() -> Int32
19+
open override func hashCode() -> Int32
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2121
@JavaMethod
22-
public func compareTo(_ arg0: JavaBoolean?) -> Int32
22+
open func compareTo(_ arg0: JavaBoolean?) -> Int32
2323

2424
@JavaMethod
25-
public func compareTo(_ arg0: JavaObject?) -> Int32
25+
open func compareTo(_ arg0: JavaObject?) -> Int32
2626

2727
@JavaMethod
28-
public func booleanValue() -> Bool
29-
30-
@JavaMethod
31-
public func getClass() -> JavaClass<JavaObject>!
32-
33-
@JavaMethod
34-
public func notify()
35-
36-
@JavaMethod
37-
public func notifyAll()
38-
39-
@JavaMethod
40-
public func wait(_ arg0: Int64) throws
41-
42-
@JavaMethod
43-
public func wait(_ arg0: Int64, _ arg1: Int32) throws
44-
45-
@JavaMethod
46-
public func wait() throws
28+
open func booleanValue() -> Bool
4729
}
4830
extension JavaClass<JavaBoolean> {
4931
@JavaStaticField(isFinal: true)

‎Sources/JavaKit/generated/JavaByte.swift‎

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Original file line numberDiff line numberDiff line change
@@ -1,64 +1,46 @@
11
// Auto-generated by Java-to-Swift wrapper generator.
22
import JavaRuntime
33

4-
@JavaClass("java.lang.Byte", extends: JavaNumber.self)
5-
public struct JavaByte {
4+
@JavaClass("java.lang.Byte")
5+
open class JavaByte: JavaNumber {
66
@JavaMethod
7-
public init(_ arg0: Int8, environment: JNIEnvironment? = nil)
7+
@_nonoverride public convenience init(_ arg0: Int8, environment: JNIEnvironment? = nil)
88

99
@JavaMethod
10-
public init(_ arg0: String, environment: JNIEnvironment? = nil) throws
10+
@_nonoverride public convenience init(_ arg0: String, environment: JNIEnvironment? = nil) throws
1111

1212
@JavaMethod
13-
public func equals(_ arg0: JavaObject?) -> Bool
13+
open override func equals(_ arg0: JavaObject?) -> Bool
1414

1515
@JavaMethod
16-
public func toString() -> String
16+
open override func toString() -> String
1717

1818
@JavaMethod
19-
public func hashCode() -> Int32
19+
open override func hashCode() -> Int32
2020

2121
@JavaMethod
22-
public func compareTo(_ arg0: JavaByte?) -> Int32
22+
open func compareTo(_ arg0: JavaByte?) -> Int32
2323

2424
@JavaMethod
25-
public func compareTo(_ arg0: JavaObject?) -> Int32
25+
open func compareTo(_ arg0: JavaObject?) -> Int32
2626

2727
@JavaMethod
28-
public func byteValue() -> Int8
28+
open override func byteValue() -> Int8
2929

3030
@JavaMethod
31-
public func shortValue() -> Int16
31+
open override func shortValue() -> Int16
3232

3333
@JavaMethod
34-
public func intValue() -> Int32
34+
open override func intValue() -> Int32
3535

3636
@JavaMethod
37-
public func longValue() -> Int64
37+
open override func longValue() -> Int64
3838

3939
@JavaMethod
40-
public func floatValue() -> Float
40+
open override func floatValue() -> Float
4141

4242
@JavaMethod
43-
public func doubleValue() -> Double
44-
45-
@JavaMethod
46-
public func getClass() -> JavaClass<JavaObject>!
47-
48-
@JavaMethod
49-
public func notify()
50-
51-
@JavaMethod
52-
public func notifyAll()
53-
54-
@JavaMethod
55-
public func wait(_ arg0: Int64) throws
56-
57-
@JavaMethod
58-
public func wait(_ arg0: Int64, _ arg1: Int32) throws
59-
60-
@JavaMethod
61-
public func wait() throws
43+
open override func doubleValue() -> Double
6244
}
6345
extension JavaClass<JavaByte> {
6446
@JavaStaticField(isFinal: true)

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