From 720a0e0af294e3611b464caf301f69e0b48dbf41 Mon Sep 17 00:00:00 2001
From: Sebastian Staudt <koraktor@gmail.com>
Date: Tue, 14 Aug 2018 18:06:16 +0200
Subject: [PATCH 1/3] Allow enums to implement NativeMapped

This will allow enums to be used inside structures.
---
 src/com/sun/jna/NativeMappedConverter.java | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/com/sun/jna/NativeMappedConverter.java b/src/com/sun/jna/NativeMappedConverter.java
index c2cd5e5789..d91baa6973 100644
--- a/src/com/sun/jna/NativeMappedConverter.java
+++ b/src/com/sun/jna/NativeMappedConverter.java
@@ -57,6 +57,10 @@ public NativeMappedConverter(Class<?> type) {
     }
 
     public NativeMapped defaultValue() {
+        if (type.isEnum()) {
+            return (NativeMapped) type.getEnumConstants()[0];
+        }
+
         try {
             return (NativeMapped)type.newInstance();
         } catch (InstantiationException e) {

From 21f2b3175493b58edd42f9e2cab6d3bcddea672c Mon Sep 17 00:00:00 2001
From: Sebastian Staudt <koraktor@gmail.com>
Date: Thu, 30 Aug 2018 06:45:22 +0200
Subject: [PATCH 2/3] Add tests for NativeMappedConverter#defaultValue

---
 test/com/sun/jna/NativeMappedTestClass.java   | 26 +++++++++++++
 .../sun/jna/NativedMappedConverterTest.java   | 37 +++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 test/com/sun/jna/NativeMappedTestClass.java
 create mode 100644 test/com/sun/jna/NativedMappedConverterTest.java

diff --git a/test/com/sun/jna/NativeMappedTestClass.java b/test/com/sun/jna/NativeMappedTestClass.java
new file mode 100644
index 0000000000..74e12f9016
--- /dev/null
+++ b/test/com/sun/jna/NativeMappedTestClass.java
@@ -0,0 +1,26 @@
+package com.sun.jna;
+
+class NativeMappedTestClass implements NativeMapped {
+
+    private String name;
+
+    public NativeMappedTestClass() {}
+
+    @Override
+    public Object fromNative(Object nativeValue, FromNativeContext context) {
+        NativeMappedTestClass object = new NativeMappedTestClass();
+        object.name = (String) nativeValue;
+
+        return object;
+    }
+
+    @Override
+    public Object toNative() {
+        return name;
+    }
+
+    @Override
+    public Class<?> nativeType() {
+        return String.class;
+    }
+}
diff --git a/test/com/sun/jna/NativedMappedConverterTest.java b/test/com/sun/jna/NativedMappedConverterTest.java
new file mode 100644
index 0000000000..0f72b2fd13
--- /dev/null
+++ b/test/com/sun/jna/NativedMappedConverterTest.java
@@ -0,0 +1,37 @@
+package com.sun.jna;
+
+import junit.framework.TestCase;
+
+public class NativedMappedConverterTest extends TestCase {
+
+    public void testDefaultValueForClass() {
+        NativeMappedConverter converter = new NativeMappedConverter(NativeMappedTestClass.class);
+
+        assertTrue(converter.defaultValue() instanceof NativeMappedTestClass);
+    }
+
+    public void testDefaultValueForEnum() {
+        NativeMappedConverter converter = new NativeMappedConverter(TestEnum.class);
+
+        assertSame(converter.defaultValue(), TestEnum.VALUE1);
+    }
+
+    private enum TestEnum implements NativeMapped { VALUE1, VALUE2;
+
+        @Override
+        public Object fromNative(Object nativeValue, FromNativeContext context) {
+            return values()[(Integer) nativeValue];
+        }
+
+        @Override
+        public Object toNative() {
+            return ordinal();
+        }
+
+        @Override
+        public Class<?> nativeType() {
+            return Integer.class;
+        }
+    }
+
+}

From 3986a3b7922b9e13655f319d4fc1bcef16d66219 Mon Sep 17 00:00:00 2001
From: Sebastian Staudt <koraktor@gmail.com>
Date: Fri, 31 Aug 2018 06:13:37 +0200
Subject: [PATCH 3/3] Update CHANGES.md

---
 CHANGES.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/CHANGES.md b/CHANGES.md
index 5af6d5f5ae..47de6dc1c0 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -33,6 +33,7 @@ Features
 
 Bug Fixes
 ---------
+* [#1003](https://github.com/java-native-access/jna/pull/1003): Allow `NativeMapped` to be used with enums - [@koraktor](https://github.com/koraktor)
 * [#652](https://github.com/java-native-access/jna/issues/652): Dead Lock in class initialization - [@matthiasblaesing](https://github.com/matthiasblaesing).
 * [#843](https://github.com/java-native-access/jna/pull/843): Correctly bind `com.sun.jna.platform.win32.SecBufferDesc` and add convenience binding as `com.sun.jna.platform.win32.SspiUtil.ManagedSecBufferDesc`. Bind SSPI functions `InitializeSecurityContext`, `AcceptSecurityContext`, `QueryCredentialsAttributes`, `QuerySecurityPackageInfo`, `EncryptMessage`, `DecryptMessage`, `MakeSignature`, `VerifySignature` in `com.sun.jna.platform.win32.Secur32` - [@matthiasblaesing](https://github.com/matthiasblaesing).
 * [#863](https://github.com/java-native-access/jna/pull/863): Fix ARM softfloat/hardfloat detection by modifying armSoftFloat condition in ELFAnalyser. Before this fix a softfloat binary could be misdetected as hardfloat. - [@kunkun26](https://github.com/kunkun26).