package jnr.ffi.provider.jffi;
import com.kenai.jffi.ObjectParameterType;
import java.nio.Buffer;
import java.util.EnumSet;
/**
*
*/
final class HeapBufferParameterStrategy extends PointerParameterStrategy {
public HeapBufferParameterStrategy(ObjectParameterType.ComponentType componentType) {
super(HEAP, ObjectParameterType.create(ObjectParameterType.ARRAY, componentType));
}
@Override
public long address(Object o) {
return 0;
}
@Override
public Object object(Object o) {
return ((Buffer) o).array();
}
@Override
public int offset(Object o) {
Buffer buffer = (Buffer) o;
return buffer.arrayOffset() + buffer.position();
}
@Override
public int length(Object o) {
return ((Buffer) o).remaining();
}
private static final HeapBufferParameterStrategy[] heapBufferStrategies;
static {
EnumSet<ObjectParameterType.ComponentType> componentTypes = EnumSet.allOf(ObjectParameterType.ComponentType.class);
heapBufferStrategies = new HeapBufferParameterStrategy[componentTypes.size()];
for (ObjectParameterType.ComponentType componentType : componentTypes) {
heapBufferStrategies[componentType.ordinal()] = new HeapBufferParameterStrategy(componentType);
}
}
static PointerParameterStrategy get(ObjectParameterType.ComponentType componentType) {
return heapBufferStrategies[componentType.ordinal()];
}
}