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Merge pull request java-native-access#919 from matthiasblaesing/direc…
…tmapping Improve/Fix direct mapping support
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,227 @@ | ||
| /* Copyright (c) 2018 Matthias Bläsing, All Rights Reserved | ||
| * | ||
| * The contents of this file is dual-licensed under 2 | ||
| * alternative Open Source/Free licenses: LGPL 2.1 or later and | ||
| * Apache License 2.0. (starting with JNA version 4.0.0). | ||
| * | ||
| * You can freely decide which license you want to apply to | ||
| * the project. | ||
| * | ||
| * You may obtain a copy of the LGPL License at: | ||
| * | ||
| * http://www.gnu.org/licenses/licenses.html | ||
| * | ||
| * A copy is also included in the downloadable source code package | ||
| * containing JNA, in file "LGPL2.1". | ||
| * | ||
| * You may obtain a copy of the Apache License at: | ||
| * | ||
| * http://www.apache.org/licenses/ | ||
| * | ||
| * A copy is also included in the downloadable source code package | ||
| * containing JNA, in file "AL2.0". | ||
| */ | ||
| package com.sun.jna; | ||
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| import java.util.Collections; | ||
| import junit.framework.TestCase; | ||
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| /** | ||
| * Test that all method call options for native calls work with NULL values | ||
| * and result in deterministic behaviour and not in a JVM crash. | ||
| */ | ||
| public class ArgumentsMarshalNullableTest extends TestCase { | ||
| public static class Int32Integer extends IntegerType { | ||
|
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| public Int32Integer() { | ||
| super(4); | ||
| } | ||
|
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| public Int32Integer(long value) { | ||
| super(4, value); | ||
| } | ||
|
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| } | ||
|
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|
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| public static class Int32NativeMapped implements NativeMapped { | ||
| private int value; | ||
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| public Int32NativeMapped() {}; | ||
|
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| public Int32NativeMapped(int value) { | ||
| this.value = value; | ||
| } | ||
|
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| public Object fromNative(Object nativeValue, FromNativeContext context) { | ||
| if(nativeValue instanceof Integer) { | ||
| return new Int32NativeMapped((Integer) nativeValue); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
|
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| public Object toNative() { | ||
| return value; | ||
| } | ||
|
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| public Class<?> nativeType() { | ||
| return int.class; | ||
| } | ||
|
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| @Override | ||
| public String toString() { | ||
| return "Int32NativeMapped{" + "value=" + value + '}'; | ||
| } | ||
|
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| @Override | ||
| public int hashCode() { | ||
| int hash = 7; | ||
| hash = 59 * hash + this.value; | ||
| return hash; | ||
| } | ||
|
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| @Override | ||
| public boolean equals(Object obj) { | ||
| if (this == obj) { | ||
| return true; | ||
| } | ||
| if (obj == null) { | ||
| return false; | ||
| } | ||
| if (getClass() != obj.getClass()) { | ||
| return false; | ||
| } | ||
| final Int32NativeMapped other = (Int32NativeMapped) obj; | ||
| if (this.value != other.value) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
| } | ||
|
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| public static class Int32 { | ||
| public static final FromNativeConverter fromNative = new FromNativeConverter() { | ||
| public Object fromNative(Object nativeValue, FromNativeContext context) { | ||
| if (nativeValue instanceof Integer) { | ||
| return new Int32((Integer) nativeValue); | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
|
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| public Class<?> nativeType() { | ||
| return int.class; | ||
| } | ||
| }; | ||
|
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| public static final ToNativeConverter toNative = new ToNativeConverter() { | ||
| public Object toNative(Object value, ToNativeContext context) { | ||
| if(value == null) { | ||
| return 0; | ||
| } else { | ||
| return ((Int32) value).value; | ||
| } | ||
| } | ||
|
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| public Class<?> nativeType() { | ||
| return int.class; | ||
| } | ||
| }; | ||
|
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| private int value; | ||
|
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| public Int32() { | ||
| } | ||
|
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| public Int32(int value) { | ||
| this.value = value; | ||
| } | ||
|
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| @Override | ||
| public int hashCode() { | ||
| int hash = 7; | ||
| hash = 53 * hash + this.value; | ||
| return hash; | ||
| } | ||
|
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| @Override | ||
| public boolean equals(Object obj) { | ||
| if (this == obj) { | ||
| return true; | ||
| } | ||
| if (obj == null) { | ||
| return false; | ||
| } | ||
| if (getClass() != obj.getClass()) { | ||
| return false; | ||
| } | ||
| final Int32 other = (Int32) obj; | ||
| if (this.value != other.value) { | ||
| return false; | ||
| } | ||
| return true; | ||
| } | ||
|
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| @Override | ||
| public String toString() { | ||
| return "Int32{" + "value=" + value + '}'; | ||
| } | ||
| } | ||
|
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| public static interface TestLibrary extends Library { | ||
| Int32NativeMapped returnInt32Argument(Int32NativeMapped i); | ||
| Int32Integer returnInt32Argument(Int32Integer i); | ||
| Int32 returnInt32Argument(Int32 i); | ||
| } | ||
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| TestLibrary lib; | ||
| @Override | ||
| protected void setUp() { | ||
| lib = Native.loadLibrary("testlib", TestLibrary.class, | ||
| Collections.singletonMap(Library.OPTION_TYPE_MAPPER, new TypeMapper() { | ||
| public FromNativeConverter getFromNativeConverter(Class<?> javaType) { | ||
| if(javaType == Int32.class) { | ||
| return Int32.fromNative; | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
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| public ToNativeConverter getToNativeConverter(Class<?> javaType) { | ||
| if(javaType == Int32.class) { | ||
| return Int32.toNative; | ||
| } else { | ||
| return null; | ||
| } | ||
| } | ||
| })); | ||
| } | ||
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| @Override | ||
| protected void tearDown() { | ||
| lib = null; | ||
| } | ||
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| public void testNativeMapped() { | ||
| assertEquals("Basic non-null call", new Int32NativeMapped(42), lib.returnInt32Argument(new Int32NativeMapped(42))); | ||
| assertEquals("null call", new Int32NativeMapped(0), lib.returnInt32Argument((Int32NativeMapped) null)); | ||
| } | ||
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| public void testIntegerType() { | ||
| assertEquals("Basic non-null call", new Int32Integer(42), lib.returnInt32Argument(new Int32Integer(42))); | ||
| assertEquals("null call", new Int32Integer(0), lib.returnInt32Argument((Int32Integer) null)); | ||
| } | ||
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| public void testTypeMapper() { | ||
| assertEquals("Basic non-null call", new Int32(42), lib.returnInt32Argument(new Int32(42))); | ||
| assertEquals("null call", new Int32(0), lib.returnInt32Argument((Int32) null)); | ||
| } | ||
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| public static void main(java.lang.String[] argList) { | ||
| junit.textui.TestRunner.run(ArgumentsMarshalNullableTest.class); | ||
| } | ||
|
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| } |
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