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/*
* Copyright (C) 2012 RoboVM AB
*
* 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 com.bugvm.rt.bro;
import java.lang.reflect.Array;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import com.bugvm.rt.VM;
import com.bugvm.rt.bro.annotation.Marshaler;
import com.bugvm.rt.bro.annotation.MarshalsArray;
import com.bugvm.rt.bro.annotation.MarshalsPointer;
/**
*
* @version $Id$
*/
@Marshaler(Struct.Marshaler.class)
public abstract class Struct> extends NativeObject implements Iterable {
protected Struct() {
setHandle(VM.allocateMemory(_sizeOf()));
}
protected Struct(long handle) {
setHandle(handle);
}
public T copy() {
return copy(1);
}
@SuppressWarnings("unchecked")
public T copy(int n) {
T o = (T) allocate(getClass(), n);
VM.memcpy(o.getHandle(), getHandle(), _sizeOf() * n);
return o;
}
public T copyWithMalloc() {
return copyWithMalloc(1);
}
@SuppressWarnings("unchecked")
public T copyWithMalloc(int n) {
T o = (T) malloc(getClass(), n);
VM.memcpy(o.getHandle(), getHandle(), _sizeOf() * n);
return o;
}
@SuppressWarnings("unchecked")
public U as(Class type) {
if (Struct.class.isAssignableFrom(type)) {
@SuppressWarnings("rawtypes")
Class c = type;
return (U) Struct.toStruct(c, getHandle());
}
return super.as(type);
}
protected int _sizeOf() {
return 0;
}
public void clear() {
clear(1);
}
public void clear(int n) {
if (n < 1) {
throw new IllegalArgumentException("n < 1");
}
VM.memset(getHandle(), (byte) 0, _sizeOf() * n);
}
public void free() {
VM.free(getHandle());
}
@SuppressWarnings("unchecked")
public Iterator iterator() {
return new StructIterator((T) this);
}
@SuppressWarnings("unchecked")
public Iterator iterator(final int n) {
if (n < 1) {
throw new IllegalArgumentException("n < 1");
}
return new StructIterator((T) this, n);
}
@SuppressWarnings("unchecked")
protected T wrap(long address) {
return (T) toStruct(getClass(), address);
}
public T next() {
return next(1);
}
@SuppressWarnings("unchecked")
public T next(long delta) {
if (delta == 0) {
return (T) this;
}
return wrap(getHandle() + _sizeOf() * delta);
}
public T previous() {
return previous(1);
}
public T previous(long delta) {
return next(-delta);
}
@SuppressWarnings("unchecked")
public T[] toArray(int n) {
T[] array = (T[]) Array.newInstance(getClass(), n);
for (int i = 0; i < n; i++) {
array[i] = next(i);
}
return array;
}
/**
* Updates the memory starting at this {@link Struct} with the
* {@link Struct} starting at the specified instance.
*
* @param o the {@link Struct} to write to the address of this
* {@link Struct}.
* @throws NullPointerException if {@code o} is {@code null}.
* @throws IllegalArgumentException if the class of {@code o} is not the
* same as this {@link Struct}'s class.
*/
public void update(T o) {
update(o, 1);
}
/**
* Updates the memory starting at this {@link Struct} with the
* {@link Struct}s starting at the specified instance.
*
* @param o the first {@link Struct} to write to the address of this
* {@link Struct}.
* @param n the number of {@link Struct}s to write.
* @throws NullPointerException if {@code o} is {@code null}.
* @throws IllegalArgumentException if the class of {@code o} is not the
* same as this {@link Struct}'s class.
*/
public void update(T o, int n) {
if (o == null) {
throw new NullPointerException("o");
}
if (o.getClass() != this.getClass()) {
throw new IllegalArgumentException("Expected an instance of "
+ this.getClass().getName() + ". Actual type: "
+ o.getClass().getName());
}
if (n < 1) {
throw new IllegalArgumentException("n < 1");
}
VM.memcpy(getHandle(), o.getHandle(), _sizeOf() * n);
}
/**
* Updates the memory starting at this {@link Struct} with the
* {@link Struct}s in the specified array.
*
* @param array the array of {@link Struct}s to write.
* @throws NullPointerException if {@code array} or any of the objects in
* {@code array} are {@code null}.
* @throws IllegalArgumentException if the class of any of the objects in
* the array is not the same as this {@link Struct}'s class.
*/
public void update(T[] array) {
if (array == null) {
throw new NullPointerException("array");
}
Class cls = this.getClass();
int len = array.length;
for (int i = 0; i < len; i++) {
T o = array[i];
if (o == null) {
throw new NullPointerException("null at index " + i);
}
if (o.getClass() != cls) {
throw new IllegalArgumentException("Expected an instance of "
+ cls.getName() + " at index " + i + ". Actual type: "
+ o.getClass().getName());
}
}
long dst = getHandle();
int size = _sizeOf();
for (int i = 0; i < len; i++) {
VM.memcpy(dst, array[i].getHandle(), size);
dst += size;
}
}
public List toList(int n) {
List l = new ArrayList(n);
for (int i = 0; i < n; i++) {
l.add(next(i));
}
return l;
}
public static int sizeOf() {
return 0;
}
public static int sizeOf(Struct struct) {
return struct._sizeOf();
}
public static int offsetOf(int index) {
return 0;
}
public static > T allocate(Class cls) {
return allocate(cls, 1);
}
public static > T allocate(Class cls, int n) {
if (n < 1) {
throw new IllegalArgumentException("n < 1");
}
T o = VM.allocateObject(cls);
long handle = VM.allocateMemory(o._sizeOf() * n);
o.setHandle(handle);
return o;
}
public static > T malloc(Class cls) {
return malloc(cls, 1);
}
public static > T malloc(Class cls, int n) {
if (n < 1) {
throw new IllegalArgumentException("n < 1");
}
T o = VM.allocateObject(cls);
long handle = VM.malloc(o._sizeOf() * n);
o.setHandle(handle);
return o;
}
public static > T toStruct(Class cls, long handle) {
if (handle == 0L) {
return null;
}
T o = VM.allocateObject(cls);
o.setHandle(handle);
return o;
}
public static class Marshaler {
@MarshalsPointer
public static > T toObject(Class cls, long handle, long flags) {
return Struct.toStruct(cls, handle);
}
@MarshalsPointer
public static long toNative(Struct o, long flags) {
if (o == null) {
return 0L;
}
return o.getHandle();
}
@MarshalsArray
public static > T toObject(Class cls, long handle, long flags, int d1) {
T s = Struct.toStruct(cls, handle);
return s;
}
@MarshalsArray
public static > void toNative(T o, long handle, long flags, int d1) {
if (o.getHandle() == handle) {
return;
}
VM.memcpy(handle, o.getHandle(), d1 * o._sizeOf());
}
@MarshalsArray
public static > T toObject(Class cls, long handle, long flags, int d1, int d2) {
T s = Struct.toStruct(cls, handle);
return s;
}
@MarshalsArray
public static > void toNative(T o, long handle, long flags, int d1, int d2) {
toNative(o, handle, flags, d1 * d2);
}
@MarshalsArray
public static > T toObject(Class cls, long handle, long flags, int d1, int d2, int d3) {
T s = Struct.toStruct(cls, handle);
return s;
}
@MarshalsArray
public static > void toNative(T o, long handle, long flags, int d1, int d2, int d3) {
toNative(o, handle, flags, d1 * d2 * d3);
}
private static void checkDimensions(Class baseType, String format, int actual, int expected) {
if (actual != expected) {
String suffixActual = String.format(format, actual);
String suffixExpected = String.format(format, expected);
throw new IllegalArgumentException(
"Expected " + baseType.getName() + suffixExpected
+ ". Got " + baseType.getName() + suffixActual);
}
}
@MarshalsArray
@SuppressWarnings("unchecked")
public static > T[] array1DToObject(Class arrayClass, long handle, long flags, int d1) {
T s = Struct.toStruct((Class) arrayClass.getComponentType(), handle);
return s.toArray(d1);
}
@MarshalsArray
@SuppressWarnings("unchecked")
public static > void array1DToNative(T[] o, long handle, long flags, int d1) {
Class structClass = (Class) o.getClass().getComponentType();
checkDimensions(structClass, "[%d]", o.length, d1);
Struct s = Struct.toStruct((Class) structClass, handle);
s.update(o);
}
@MarshalsArray
@SuppressWarnings("unchecked")
public static > T[][] array2DToObject(Class arrayClass, long handle, long flags, int d1, int d2) {
Class structClass = (Class) arrayClass.getComponentType().getComponentType();
T[][] o = (T[][]) Array.newInstance(structClass, d1, d2);
T s = Struct.toStruct((Class) structClass, handle);
int len1 = o.length;
for (int i = 0; i < len1; i++) {
o[i] = s.toArray(d2);
s = s.next(d2);
}
return o;
}
@MarshalsArray
@SuppressWarnings("unchecked")
public static > void array2DToNative(T[][] o, long handle, long flags, int d1, int d2) {
Class structClass = (Class) o.getClass().getComponentType().getComponentType();
checkDimensions(structClass, "[%d][]", o.length, d1);
int len1 = o.length;
for (int i = 0; i < len1; i++) {
checkDimensions(structClass, "[][%d]", o[i].length, d2);
}
Struct s = Struct.toStruct((Class) structClass, handle);
for (int i = 0; i < len1; i++) {
s.update(o[i]);
s = s.next(d2);
}
}
@MarshalsArray
@SuppressWarnings("unchecked")
public static > T[][][] array3DToObject(Class arrayClass, long handle, long flags, int d1, int d2, int d3) {
Class structClass = (Class) arrayClass.getComponentType().getComponentType().getComponentType();
T[][][] o = (T[][][]) Array.newInstance(structClass, d1, d2, d3);
T s = Struct.toStruct((Class) structClass, handle);
int len1 = o.length;
for (int i = 0; i < len1; i++) {
int len2 = o[i].length;
for (int j = 0; j < len2; j++) {
o[i][j] = s.toArray(d3);
s = s.next(d3);
}
}
return o;
}
@MarshalsArray
@SuppressWarnings("unchecked")
public static > void array3DToNative(T[][][] o, long handle, long flags, int d1, int d2, int d3) {
Class structClass = (Class) o.getClass().getComponentType().getComponentType().getComponentType();
checkDimensions(structClass, "[%d][][]", o.length, d1);
int len1 = o.length;
for (int i = 0; i < len1; i++) {
T[][] p = o[i];
checkDimensions(structClass, "[][%d][]", p.length, d2);
int len2 = p.length;
for (int j = 0; j < len2; j++) {
checkDimensions(structClass, "[][][%d]", p[j].length, d3);
}
}
Struct s = Struct.toStruct((Class) structClass, handle);
for (int i = 0; i < len1; i++) {
T[][] p = o[i];
int len2 = p.length;
for (int j = 0; j < len2; j++) {
s.update(o[i][j]);
s = s.next(d3);
}
}
}
}
static class StructIterator> implements Iterator {
private T next;
private int n;
private int i = 0;
StructIterator(T first) {
this(first, -1);
}
StructIterator(T first, int n) {
this.next = first;
this.n = n;
}
@Override
public boolean hasNext() {
return n == -1 || i < n;
}
@Override
public T next() {
T o = next;
next = next.next();
i++;
return o;
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
}
}
