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/*
* SlotDefinition.java
*
* Copyright (C) 2005 Peter Graves
* $Id$
*
* 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.*;
public final class SlotDefinition extends StandardObject
{
private SlotDefinition()
{
super(StandardClass.STANDARD_SLOT_DEFINITION,
StandardClass.STANDARD_SLOT_DEFINITION.getClassLayout().getLength());
setInstanceSlotValue(Symbol.LOCATION, NIL);
setInstanceSlotValue(Symbol._TYPE, T);
setInstanceSlotValue(Symbol._DOCUMENTATION, NIL);
}
private SlotDefinition(StandardClass clazz) {
// clazz layout needs to have SlotDefinitionClass layout as prefix
// or indexed slot access won't work
super(clazz, clazz.getClassLayout().getLength());
setInstanceSlotValue(Symbol.LOCATION, NIL);
}
public SlotDefinition(StandardClass clazz, LispObject name) {
// clazz layout needs to have SlotDefinitionClass layout as prefix
// or indexed slot access won't work
super(clazz, clazz.getClassLayout().getLength());
Debug.assertTrue(name instanceof Symbol);
setInstanceSlotValue(Symbol.NAME, name);
setInstanceSlotValue(Symbol.INITFUNCTION, NIL);
setInstanceSlotValue(Symbol.INITARGS,
new Cons(PACKAGE_KEYWORD.intern(((Symbol)name).getName())));
setInstanceSlotValue(Symbol.READERS, NIL);
setInstanceSlotValue(Symbol.ALLOCATION, Keyword.INSTANCE);
setInstanceSlotValue(Symbol.LOCATION, NIL);
setInstanceSlotValue(Symbol._TYPE, T);
setInstanceSlotValue(Symbol._DOCUMENTATION, NIL);
}
public SlotDefinition(LispObject name, LispObject readers)
{
this();
Debug.assertTrue(name instanceof Symbol);
setInstanceSlotValue(Symbol.NAME, name);
setInstanceSlotValue(Symbol.INITFUNCTION, NIL);
setInstanceSlotValue(Symbol.INITARGS,
new Cons(PACKAGE_KEYWORD.intern(((Symbol)name).getName())));
setInstanceSlotValue(Symbol.READERS, readers);
setInstanceSlotValue(Symbol.ALLOCATION, Keyword.INSTANCE);
}
public SlotDefinition(LispObject name, LispObject readers,
LispObject initForm)
{
this();
Debug.assertTrue(name instanceof Symbol);
setInstanceSlotValue(Symbol.NAME, name);
setInstanceSlotValue(Symbol.INITFUNCTION, NIL);
setInstanceSlotValue(Symbol.INITFORM, initForm);
setInstanceSlotValue(Symbol.INITARGS,
new Cons(PACKAGE_KEYWORD.intern(((Symbol)name).getName())));
setInstanceSlotValue(Symbol.READERS, readers);
setInstanceSlotValue(Symbol.ALLOCATION, Keyword.INSTANCE);
}
public SlotDefinition(LispObject name, LispObject readers,
Function initFunction)
{
this();
Debug.assertTrue(name instanceof Symbol);
setInstanceSlotValue(Symbol.NAME, name);
setInstanceSlotValue(Symbol.INITFUNCTION, initFunction);
setInstanceSlotValue(Symbol.INITFORM, NIL);
setInstanceSlotValue(Symbol.INITARGS,
new Cons(PACKAGE_KEYWORD.intern(((Symbol)name).getName())));
setInstanceSlotValue(Symbol.READERS, readers);
setInstanceSlotValue(Symbol.ALLOCATION, Keyword.INSTANCE);
}
public SlotDefinition(LispObject name, LispObject readers,
Function initFunction, LispObject initargs)
{
this();
Debug.assertTrue(name instanceof Symbol);
setInstanceSlotValue(Symbol.NAME, name);
setInstanceSlotValue(Symbol.INITFUNCTION, initFunction);
setInstanceSlotValue(Symbol.INITFORM, NIL);
setInstanceSlotValue(Symbol.INITARGS, initargs);
setInstanceSlotValue(Symbol.READERS, readers);
setInstanceSlotValue(Symbol.ALLOCATION, Keyword.INSTANCE);
}
@Override
public String printObject()
{
StringBuilder sb =
new StringBuilder(Symbol.SLOT_DEFINITION.printObject());
LispObject name = getInstanceSlotValue(Symbol.NAME);
if (name != null && name != NIL) {
sb.append(' ');
sb.append(name.printObject());
}
return unreadableString(sb.toString());
}
private static final Primitive MAKE_SLOT_DEFINITION
= new pf_make_slot_definition();
@DocString(name="%make-slot-definition",
args="slot-class",
doc="Argument must be a subclass of standard-slot-definition")
private static final class pf_make_slot_definition extends Primitive
{
pf_make_slot_definition()
{
super("%make-slot-definition", PACKAGE_SYS, true, "slot-class");
}
@Override
public LispObject execute(LispObject slotDefinitionClass)
{
if (!(slotDefinitionClass instanceof StandardClass))
return type_error(slotDefinitionClass,
StandardClass.STANDARD_SLOT_DEFINITION);
// we could check whether slotClass is a subtype of
// standard-slot-definition here, but subtypep doesn't work early
// in the build process
return new SlotDefinition((StandardClass)slotDefinitionClass);
}
};
}
