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/* 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;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* Test native calls where the parameters and return types are bound as wrappers.
*
* <p>This variant of {@link ArgumentsWrappersMarshalTest} modified to use
* direct mapping.</p>
*
* <p>The {@code PrimitiveConverter} was not made part of the core codebase,
* as the usage would mean multiple trips through the C<->Java barrier.
* The converter is run on the java side, the invocation happens from the C side.
* As the primary reason for direct mapping is performance, it is strongly
* recommed not to go down this route, but map via java primitives.</p>
*/
public class DirectArgumentsWrappersMarshalTest extends ArgumentsWrappersMarshalTest {
public static class DirectTestLibrary implements TestLibrary {
@Override
public native Boolean returnBooleanArgument(Boolean arg);
@Override
public native Byte returnInt8Argument(Byte arg);
@Override
public native Character returnWideCharArgument(Character arg);
@Override
public native Short returnInt16Argument(Short arg);
@Override
public native Integer returnInt32Argument(Integer i);
@Override
public native Long returnInt64Argument(Long l);
@Override
public native Float returnFloatArgument(Float f);
@Override
public native Double returnDoubleArgument(Double d);
@Override
public native Long checkInt64ArgumentAlignment(Integer i, Long j, Integer i2, Long j2);
@Override
public native Double checkDoubleArgumentAlignment(Float i, Double j, Float i2, Double j2);
static {
class PrimitiveConverter implements FromNativeConverter, ToNativeConverter {
private final Class nativeType;
public PrimitiveConverter(Class nativeType) {
this.nativeType = nativeType;
}
public Object fromNative(Object nativeValue, FromNativeContext context) {
if(nativeValue == null) {
return 0;
} else {
return nativeValue;
}
}
public Class<?> nativeType() {
return nativeType;
}
public Object toNative(Object value, ToNativeContext context) {
if(value == null) {
return 0;
} else {
return value;
}
}
}
final Map<Class,PrimitiveConverter> converters = new HashMap<>();
converters.put(Boolean.class, new PrimitiveConverter(boolean.class));
converters.put(Byte.class, new PrimitiveConverter(byte.class));
converters.put(Short.class, new PrimitiveConverter(short.class));
converters.put(Character.class, new PrimitiveConverter(char.class));
converters.put(Integer.class, new PrimitiveConverter(int.class));
converters.put(Long.class, new PrimitiveConverter(long.class));
converters.put(Float.class, new PrimitiveConverter(float.class));
converters.put(Double.class, new PrimitiveConverter(double.class));
TypeMapper tm = new TypeMapper() {
public FromNativeConverter getFromNativeConverter(Class<?> javaType) {
return converters.get(javaType);
}
public ToNativeConverter getToNativeConverter(Class<?> javaType) {
return converters.get(javaType);
}
};
NativeLibrary testlib = NativeLibrary.getInstance("testlib",
Collections.singletonMap(Library.OPTION_TYPE_MAPPER, tm));
Native.register(testlib);
}
}
/* Override original. */
@Override
protected void setUp() {
lib = new DirectTestLibrary();
}
public static void main(java.lang.String[] argList) {
junit.textui.TestRunner.run(DirectArgumentsWrappersMarshalTest.class);
}
}
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