org.armedbear.lisp.Function 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
/*
* Function.java
*
* Copyright (C) 2002-2005 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 abstract class Function extends Operator
{
private LispObject propertyList = NIL;
private int callCount;
private int hotCount;
/**
* The value of *load-truename* which was current when this function
* was loaded, used for fetching the class bytes in case of disassembly.
*/
private final LispObject loadedFrom;
protected Function() {
LispObject loadTruename = Symbol.LOAD_TRUENAME.symbolValueNoThrow();
loadedFrom = loadTruename != null ? loadTruename : NIL;
}
public Function(String name)
{
this(name, (String)null);
}
public Function(String name, String arglist)
{
this();
if(arglist != null)
setLambdaList(new SimpleString(arglist));
if (name != null) {
Symbol symbol = Symbol.addFunction(name.toUpperCase(), this);
if (cold)
symbol.setBuiltInFunction(true);
setLambdaName(symbol);
}
}
public Function(Symbol symbol)
{
this(symbol, null, null);
}
public Function(Symbol symbol, String arglist)
{
this(symbol, arglist, null);
}
public Function(Symbol symbol, String arglist, String docstring)
{
this();
symbol.setSymbolFunction(this);
if (cold)
symbol.setBuiltInFunction(true);
setLambdaName(symbol);
if(arglist != null)
setLambdaList(new SimpleString(arglist));
if (docstring != null)
symbol.setDocumentation(Symbol.FUNCTION,
new SimpleString(docstring));
}
public Function(String name, Package pkg)
{
this(name, pkg, false);
}
public Function(String name, Package pkg, boolean exported)
{
this(name, pkg, exported, null, null);
}
public Function(String name, Package pkg, boolean exported,
String arglist)
{
this(name, pkg, exported, arglist, null);
}
public Function(String name, Package pkg, boolean exported,
String arglist, String docstring)
{
this();
if (arglist instanceof String)
setLambdaList(new SimpleString(arglist));
if (name != null) {
Symbol symbol;
if (exported)
symbol = pkg.internAndExport(name.toUpperCase());
else
symbol = pkg.intern(name.toUpperCase());
symbol.setSymbolFunction(this);
if (cold)
symbol.setBuiltInFunction(true);
setLambdaName(symbol);
if (docstring != null)
symbol.setDocumentation(Symbol.FUNCTION,
new SimpleString(docstring));
}
}
public Function(LispObject name)
{
this();
setLambdaName(name);
}
public Function(LispObject name, LispObject lambdaList)
{
this();
setLambdaName(name);
setLambdaList(lambdaList);
}
@Override
public LispObject typeOf()
{
return Symbol.FUNCTION;
}
@Override
public LispObject classOf()
{
return BuiltInClass.FUNCTION;
}
@Override
public LispObject typep(LispObject typeSpecifier)
{
if (typeSpecifier == Symbol.FUNCTION)
return T;
if (typeSpecifier == Symbol.COMPILED_FUNCTION)
return T;
if (typeSpecifier == BuiltInClass.FUNCTION)
return T;
return super.typep(typeSpecifier);
}
@Override
public final LispObject getPropertyList()
{
if (propertyList == null)
propertyList = NIL;
return propertyList;
}
@Override
public final void setPropertyList(LispObject obj)
{
if (obj == null)
throw new NullPointerException();
propertyList = obj;
}
public final void setClassBytes(byte[] bytes)
{
propertyList = putf(propertyList, Symbol.CLASS_BYTES,
new JavaObject(bytes));
}
public final LispObject getClassBytes() {
LispObject o = getf(propertyList, Symbol.CLASS_BYTES, NIL);
if(o != NIL) {
return o;
} else {
ClassLoader c = getClass().getClassLoader();
if(c instanceof FaslClassLoader) {
final LispThread thread = LispThread.currentThread();
SpecialBindingsMark mark = thread.markSpecialBindings();
try {
thread.bindSpecial(Symbol.LOAD_TRUENAME, loadedFrom);
return new JavaObject(((FaslClassLoader) c).getFunctionClassBytes(this));
} catch(Throwable t) {
//This is because unfortunately getFunctionClassBytes uses
//Debug.assertTrue(false) to signal errors
if(t instanceof ControlTransfer) {
throw (ControlTransfer) t;
} else {
return NIL;
}
} finally {
thread.resetSpecialBindings(mark);
}
} else {
return NIL;
}
}
}
public static final Primitive FUNCTION_CLASS_BYTES = new pf_function_class_bytes();
public static final class pf_function_class_bytes extends Primitive {
public pf_function_class_bytes() {
super("function-class-bytes", PACKAGE_SYS, false, "function");
}
@Override
public LispObject execute(LispObject arg) {
if (arg instanceof Function) {
return ((Function) arg).getClassBytes();
}
return type_error(arg, Symbol.FUNCTION);
}
}
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 0));
}
@Override
public LispObject execute(LispObject arg)
{
return error(new WrongNumberOfArgumentsException(this, 1));
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
return error(new WrongNumberOfArgumentsException(this, 2));
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third)
{
return error(new WrongNumberOfArgumentsException(this, 3));
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth)
{
return error(new WrongNumberOfArgumentsException(this, 4));
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth)
{
return error(new WrongNumberOfArgumentsException(this, 5));
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth, LispObject sixth)
{
return error(new WrongNumberOfArgumentsException(this, 6));
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth, LispObject sixth,
LispObject seventh)
{
return error(new WrongNumberOfArgumentsException(this, 7));
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third, LispObject fourth,
LispObject fifth, LispObject sixth,
LispObject seventh, LispObject eighth)
{
return error(new WrongNumberOfArgumentsException(this, 8));
}
@Override
public LispObject execute(LispObject[] args)
{
return error(new WrongNumberOfArgumentsException(this));
}
@Override
public String printObject()
{
LispObject name = getLambdaName();
if (name != null && name != NIL) {
return unreadableString(name.princToString());
}
// No name.
LispObject lambdaList = getLambdaList();
if (lambdaList != null) {
StringBuilder sb = new StringBuilder("FUNCTION ");
sb.append("(LAMBDA ");
if (lambdaList == NIL) {
sb.append("()");
} else {
final LispThread thread = LispThread.currentThread();
final SpecialBindingsMark mark = thread.markSpecialBindings();
thread.bindSpecial(Symbol.PRINT_LENGTH, Fixnum.THREE);
try {
sb.append(lambdaList.printObject());
}
finally {
thread.resetSpecialBindings(mark);
}
}
sb.append(")");
return unreadableString(sb.toString());
}
return unreadableString("FUNCTION");
}
// Used by the JVM compiler.
public final void argCountError()
{
error(new WrongNumberOfArgumentsException(this));
}
// Profiling.
@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;
}
}