jnr.ffi.provider.jffi.PointerParameterStrategy Maven / Gradle / Ivy
/*
* Copyright (C) 2012 Wayne Meissner
*
* This file is part of the JNR project.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package jnr.ffi.provider.jffi;
import com.kenai.jffi.ObjectParameterType;
import jnr.ffi.Pointer;
/**
*
*/
public final class PointerParameterStrategy extends ParameterStrategy {
public static final PointerParameterStrategy DIRECT = new PointerParameterStrategy(StrategyType.DIRECT);
public static final PointerParameterStrategy HEAP = new PointerParameterStrategy(StrategyType.HEAP);
PointerParameterStrategy(StrategyType type) {
super(type, ObjectParameterType.create(ObjectParameterType.ARRAY, ObjectParameterType.BYTE));
}
@Override
public long address(Object o) {
return address((Pointer) o);
}
public long address(Pointer pointer) {
return pointer != null ? pointer.address() : 0L;
}
@Override
public Object object(Object o) {
return ((Pointer) o).array();
}
@Override
public int offset(Object o) {
return ((Pointer) o).arrayOffset();
}
@Override
public int length(Object o) {
return ((Pointer) o).arrayLength();
}
}