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/*
* FuncallableStandardObject.java
*
* Copyright (C) 2003-2006 Peter Graves, 2012 Rudolf Schlatte
* $Id$
*
* 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.
*/
// TODO: swap-slots is currently handled by StandardObject, so doesn't
// exchange the functions.
package org.armedbear.lisp;
import static org.armedbear.lisp.Lisp.*;
public class FuncallableStandardObject extends StandardObject
{
LispObject function;
// KLUDGE: this is only needed for generic functions, but doesn't hurt
// to have it here.
EMFCache cache = new EMFCache();
protected FuncallableStandardObject()
{
super();
}
protected FuncallableStandardObject(Layout layout)
{
this(layout, layout.getLength());
}
protected FuncallableStandardObject(Layout layout, int length)
{
super(layout, length);
}
protected FuncallableStandardObject(LispClass cls, int length)
{
super(cls, length);
}
protected FuncallableStandardObject(LispClass cls)
{
super(cls);
}
@Override
public LispObject typep(LispObject type)
{
if (type == Symbol.COMPILED_FUNCTION)
{
if (function != null)
return function.typep(type);
else
return NIL;
}
if (type == Symbol.FUNCALLABLE_STANDARD_OBJECT)
return T;
if (type == StandardClass.FUNCALLABLE_STANDARD_OBJECT)
return T;
return super.typep(type);
}
@Override
public LispObject execute()
{
return function.execute();
}
@Override
public LispObject execute(LispObject arg)
{
return function.execute(arg);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
return function.execute(first, second);
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third)
{
return function.execute(first, second, third);
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth)
{
return function.execute(first, second, third, fourth);
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth)
{
return function.execute(first, second, third, fourth,
fifth);
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth, LispObject sixth)
{
return function.execute(first, second, third, fourth,
fifth, sixth);
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth, LispObject sixth,
LispObject seventh)
{
return function.execute(first, second, third, fourth,
fifth, sixth, seventh);
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth, LispObject sixth,
LispObject seventh, LispObject eighth)
{
return function.execute(first, second, third, fourth,
fifth, sixth, seventh, eighth);
}
@Override
public LispObject execute(LispObject[] args)
{
return function.execute(args);
}
private static final Primitive _ALLOCATE_FUNCALLABLE_INSTANCE
= new pf__allocate_funcallable_instance();
@DocString(name="%allocate-funcallable-instance",
args="class",
returns="instance")
private static final class pf__allocate_funcallable_instance extends Primitive
{
pf__allocate_funcallable_instance()
{
super("%allocate-funcallable-instance", PACKAGE_SYS, true, "class");
}
@Override
public LispObject execute(LispObject arg)
{
if (arg.typep(StandardClass.FUNCALLABLE_STANDARD_CLASS) != NIL) {
LispObject l = Symbol.CLASS_LAYOUT.execute(arg);
if (! (l instanceof Layout)) {
return program_error("Invalid standard class layout for: "
+ arg.princToString() + ".");
}
return new FuncallableStandardObject((Layout)l);
}
return type_error(arg, Symbol.FUNCALLABLE_STANDARD_CLASS);
}
};
// AMOP p. 230
private static final Primitive SET_FUNCALLABLE_INSTANCE_FUNCTION
= new pf_set_funcallable_instance_function();
@DocString(name="set-funcallable-instance-function",
args="funcallable-instance function",
returns="unspecified")
private static final class pf_set_funcallable_instance_function extends Primitive
{
pf_set_funcallable_instance_function()
{
super("set-funcallable-instance-function", PACKAGE_MOP, true,
"funcallable-instance function");
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
checkFuncallableStandardObject(first).function = second;
return second;
}
};
private static final Primitive FUNCALLABLE_INSTANCE_FUNCTION
= new pf_funcallable_instance_function();
@DocString(name="funcallable-instance-function",
args="funcallable-instance",
returns="function")
private static final class pf_funcallable_instance_function extends Primitive
{
pf_funcallable_instance_function()
{
super("funcallable-instance-function", PACKAGE_MOP, false,
"funcallable-instance");
}
@Override
public LispObject execute(LispObject arg)
{
return checkFuncallableStandardObject(arg).function;
}
};
// Profiling.
private int callCount;
private int hotCount;
@Override
public final int getCallCount()
{
return callCount;
}
@Override
public void setCallCount(int n)
{
callCount = n;
}
@Override
public final void incrementCallCount()
{
++callCount;
}
@Override
public final int getHotCount()
{
return hotCount;
}
@Override
public void setHotCount(int n)
{
hotCount = n;
}
@Override
public final void incrementHotCount()
{
++hotCount;
}
public static final FuncallableStandardObject checkFuncallableStandardObject(LispObject obj)
{
if (obj instanceof FuncallableStandardObject)
return (FuncallableStandardObject) obj;
return (FuncallableStandardObject) // Not reached.
type_error(obj, Symbol.FUNCALLABLE_STANDARD_OBJECT);
}
}
