org.armedbear.lisp.BasicVector_UnsignedByte32 Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of abcl Show documentation
Show all versions of abcl Show documentation
Common Lisp implementation running on the JVM
/*
* BasicVector_UnsignedByte32.java
*
* Copyright (C) 2002-2006 Peter Graves
* $Id: BasicVector_UnsignedByte32.java 12588 2010-04-10 17:17:08Z vvoutilainen $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package org.armedbear.lisp;
import static org.armedbear.lisp.Lisp.*;
// A basic vector is a specialized vector that is not displaced to another
// array, has no fill pointer, and is not expressly adjustable.
public final class BasicVector_UnsignedByte32 extends AbstractVector
{
private int capacity;
private long[] elements;
public BasicVector_UnsignedByte32(int capacity)
{
elements = new long[capacity];
this.capacity = capacity;
}
public BasicVector_UnsignedByte32(LispObject[] array)
{
capacity = array.length;
elements = new long[capacity];
for (int i = array.length; i-- > 0;)
elements[i] = array[i].longValue();
}
@Override
public LispObject typeOf()
{
return list(Symbol.SIMPLE_ARRAY, UNSIGNED_BYTE_32,
new Cons(Fixnum.getInstance(capacity)));
}
@Override
public LispObject classOf()
{
return BuiltInClass.VECTOR;
}
@Override
public LispObject typep(LispObject type)
{
if (type == Symbol.SIMPLE_ARRAY)
return T;
if (type == BuiltInClass.SIMPLE_ARRAY)
return T;
return super.typep(type);
}
@Override
public LispObject getElementType()
{
return UNSIGNED_BYTE_32;
}
@Override
public boolean isSimpleVector()
{
return false;
}
@Override
public boolean hasFillPointer()
{
return false;
}
@Override
public boolean isAdjustable()
{
return false;
}
@Override
public int capacity()
{
return capacity;
}
@Override
public int length()
{
return capacity;
}
@Override
public LispObject elt(int index)
{
try
{
return number(elements[index]);
}
catch (ArrayIndexOutOfBoundsException e)
{
badIndex(index, capacity);
return NIL; // Not reached.
}
}
@Override
public int aref(int index)
{
try
{
return (int) elements[index];
}
catch (ArrayIndexOutOfBoundsException e)
{
badIndex(index, elements.length);
return -1; // Not reached.
}
}
@Override
public long aref_long(int index)
{
try
{
return elements[index];
}
catch (ArrayIndexOutOfBoundsException e)
{
badIndex(index, elements.length);
return -1; // Not reached.
}
}
@Override
public LispObject AREF(int index)
{
try
{
return number(elements[index]);
}
catch (ArrayIndexOutOfBoundsException e)
{
badIndex(index, elements.length);
return NIL; // Not reached.
}
}
@Override
public void aset(int index, LispObject newValue)
{
try
{
elements[index] = newValue.longValue();
}
catch (ArrayIndexOutOfBoundsException e)
{
badIndex(index, capacity);
}
}
@Override
public LispObject subseq(int start, int end)
{
BasicVector_UnsignedByte32 v = new BasicVector_UnsignedByte32(end - start);
int i = start, j = 0;
try
{
while (i < end)
v.elements[j++] = elements[i++];
return v;
}
catch (ArrayIndexOutOfBoundsException e)
{
// FIXME
return error(new TypeError("Array index out of bounds: " + i + "."));
}
}
@Override
public void fill(LispObject obj)
{
for (int i = capacity; i-- > 0;)
elements[i] = obj.longValue();
}
@Override
public void shrink(int n)
{
if (n < capacity)
{
long[] newArray = new long[n];
System.arraycopy(elements, 0, newArray, 0, n);
elements = newArray;
capacity = n;
return;
}
if (n == capacity)
return;
error(new LispError());
}
@Override
public LispObject reverse()
{
BasicVector_UnsignedByte32 result = new BasicVector_UnsignedByte32(capacity);
int i, j;
for (i = 0, j = capacity - 1; i < capacity; i++, j--)
result.elements[i] = elements[j];
return result;
}
@Override
public LispObject nreverse()
{
int i = 0;
int j = capacity - 1;
while (i < j)
{
long temp = elements[i];
elements[i] = elements[j];
elements[j] = temp;
++i;
--j;
}
return this;
}
@Override
public AbstractVector adjustArray(int newCapacity,
LispObject initialElement,
LispObject initialContents)
{
if (initialContents != null)
{
LispObject[] newElements = new LispObject[newCapacity];
if (initialContents.listp())
{
LispObject list = initialContents;
for (int i = 0; i < newCapacity; i++)
{
newElements[i] = list.car();
list = list.cdr();
}
}
else if (initialContents.vectorp())
{
for (int i = 0; i < newCapacity; i++)
newElements[i] = initialContents.elt(i);
}
else
type_error(initialContents, Symbol.SEQUENCE);
return new BasicVector_UnsignedByte32(newElements);
}
if (capacity != newCapacity)
{
LispObject[] newElements = new LispObject[newCapacity];
System.arraycopy(elements, 0, newElements, 0,
Math.min(capacity, newCapacity));
if (initialElement != null)
for (int i = capacity; i < newCapacity; i++)
newElements[i] = initialElement;
return new BasicVector_UnsignedByte32(newElements);
}
// No change.
return this;
}
@Override
public AbstractVector adjustArray(int newCapacity,
AbstractArray displacedTo,
int displacement)
{
return new ComplexVector(newCapacity, displacedTo, displacement);
}
}