source: trunk/abcl/src/org/armedbear/lisp/JHandler.java @ 12642

Last change on this file since 12642 was 12513, checked in by ehuelsmann, 15 years ago

Remove 'private' keyword to eliminate the Java requirement

for the compiler to generate synthetic accessors: functions that
don't appear in the source but do appear in the class file.

Patch by: Douglas Miles <dmiles _at_ users.sf.net>

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 5.4 KB
Line 
1/*
2 * JHandler.java
3 *
4 * Copyright (C) 2003-2005 Andras Simon, Peter Graves
5 * $Id: JHandler.java 12513 2010-03-02 22:35:36Z ehuelsmann $
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20 *
21 * As a special exception, the copyright holders of this library give you
22 * permission to link this library with independent modules to produce an
23 * executable, regardless of the license terms of these independent
24 * modules, and to copy and distribute the resulting executable under
25 * terms of your choice, provided that you also meet, for each linked
26 * independent module, the terms and conditions of the license of that
27 * module.  An independent module is a module which is not derived from
28 * or based on this library.  If you modify this library, you may extend
29 * this exception to your version of the library, but you are not
30 * obligated to do so.  If you do not wish to do so, delete this
31 * exception statement from your version.
32 */
33
34package org.armedbear.lisp;
35
36import static org.armedbear.lisp.Lisp.*;
37
38import java.util.HashMap;
39import java.util.Map;
40import java.util.WeakHashMap;
41
42public final class JHandler
43{
44    static final Map<Object,Map<String,Entry>> table =
45       new WeakHashMap<Object,Map<String,Entry>>();
46
47    public static void callLisp (String s, Object o)
48    {
49        callLisp(s, o, "");
50    }
51
52    public static void callLisp (String s, Object o, String s1)
53    {
54        callLisp(s, o, s1, new int[] {});
55    }
56
57    public static void callLisp (String s, Object o, String s1, int ai[]) {
58        callLisp(s, o, new String[] { s1 }, ai);
59    }
60
61    public static void callLisp (String s, Object o, String as[])
62    {
63        callLisp(s, o, as, new int[] {});
64    }
65
66    public static void callLisp (String s, Object o, String as[], int ai[])
67    {
68        if (table.containsKey(o)) {
69            Map<String,Entry> entryTable =  (Map<String,Entry>)table.get(o);
70            if (entryTable.containsKey(s)) {
71                Function f = ((Entry)entryTable.get(s)).getHandler();
72                LispObject data = ((Entry)entryTable.get(s)).getData();
73                Fixnum count = ((Entry)entryTable.get(s)).getCount();
74                Fixnum[] lispAi = new Fixnum[ai.length];
75                for (int i = 0; i < ai.length; i++) {
76                    lispAi[i] = Fixnum.getInstance(ai[i]);
77                }
78                LispObject lispAiVector = new SimpleVector(lispAi);
79                SimpleString[] lispAs = new SimpleString[as.length];
80                for (int i = 0; i < as.length; i++) {
81                    lispAs[i] = new SimpleString(as[i]);
82                }
83                LispObject lispAsVector = new SimpleVector(lispAs);
84                LispObject[] args = new LispObject[] //FIXME: count -> seq_num
85                { data, new JavaObject(o), lispAiVector, lispAsVector, internKeyword(s), count };
86                f.execute(args);
87            }
88        }
89    }
90
91    // jregister-handler1 object event handler data count
92    private static final Primitive _JREGISTER_HANDLER =
93        new Primitive("%jregister-handler", PACKAGE_JAVA)
94    {
95        @Override
96        public LispObject execute(LispObject[] args)
97        {
98            if (args.length != 5)
99                return error(new WrongNumberOfArgumentsException(this));
100            Map<String,Entry> entryTable = null;
101            Object object = args[0].javaInstance();
102            String event = ((Symbol)args[1]).getName();
103            if (!table.containsKey(object)) {
104                entryTable = new HashMap<String,Entry>();
105                table.put(object,entryTable);
106            } else {
107                entryTable = (Map<String,Entry>)table.get(object);
108            }
109            Entry entry = new Entry((Function) args[2], args[3], event, entryTable);
110            if (args[4] != NIL)
111                entry.addCount(((Fixnum)args[4]).value);
112            entryTable.put(event,entry);
113            return T;
114        }
115    };
116
117    private static class Entry
118    {
119        Function handler;
120        LispObject data;
121        int count = -1;
122        Map<String,Entry> entryTable;
123        String event;
124
125        public Entry (Function handler, LispObject data, String event,
126                      Map<String,Entry> entryTable)
127        {
128            this.entryTable = entryTable;
129            this.event = event;
130            this.handler = handler;
131            this.data = data;
132        }
133
134        public Function getHandler ()
135        {
136            return handler;
137        }
138
139        public void addData (LispObject data)
140        {
141            this.data = data;
142        }
143
144        public LispObject getData ()
145        {
146            return data;
147        }
148
149        public void addCount (int count)
150        {
151            this.count = count;
152        }
153
154        public Fixnum getCount ()
155        {
156            if (count == 0)
157                entryTable.remove(event);
158            return (Fixnum.getInstance (count--));
159        }
160    }
161}
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