1 /*
2 * The Apache Software License, Version 1.1
3 *
4 * Copyright (c) 2003 The Apache Software Foundation. All rights
5 * reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 *
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
17 * distribution.
18 *
19 * 3. The end-user documentation included with the redistribution,
20 * if any, must include the following acknowledgment:
21 * "This product includes software developed by the
22 * Apache Software Foundation (http://www.apache.org/)."
23 * Alternately, this acknowledgment may appear in the software itself,
24 * if and wherever such third-party acknowledgments normally appear.
25 *
26 * 4. The names "Apache" and "Apache Software Foundation" must
27 * not be used to endorse or promote products derived from this
28 * software without prior written permission. For written
29 * permission, please contact apache@apache.org.
30 *
31 * 5. Products derived from this software may not be called "Apache",
32 * nor may "Apache" appear in their name, without prior written
33 * permission of the Apache Software Foundation.
34 *
35 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
36 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
37 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
38 * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
39 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
40 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
41 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
42 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
43 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
44 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
45 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
46 * SUCH DAMAGE.
47 * ====================================================================
48 *
49 * This software consists of voluntary contributions made by many
50 * individuals on behalf of the Apache Software Foundation. For more
51 * information on the Apache Software Foundation, please see
52 * <http://www.apache.org/>;.
53 */
54 package net.sf.cglib.util;
55
56 import java.lang.reflect.Method;
57 import java.lang.reflect.Modifier;
58 import net.sf.cglib.core.*;
59 import org.objectweb.asm.ClassVisitor;
60 import org.objectweb.asm.Type;
61
62 class ParallelSorterEmitter extends ClassEmitter {
63 private static final Signature CSTRUCT_OBJECT_ARRAY =
64 TypeUtils.parseConstructor("Object[]");
65 private static final Signature NEW_INSTANCE =
66 TypeUtils.parseSignature("net.sf.cglib.util.ParallelSorter newInstance(Object[])");
67 private static final Signature SWAP =
68 TypeUtils.parseSignature("void swap(int, int)");
69 private static final Type PARALLEL_SORTER =
70 TypeUtils.parseType("net.sf.cglib.util.ParallelSorter");
71
72 public ParallelSorterEmitter(ClassVisitor v, String className, Object[] arrays) {
73 super(v);
74 begin_class(Constants.ACC_PUBLIC, className, PARALLEL_SORTER, null, Constants.SOURCE_FILE);
75 EmitUtils.null_constructor(this);
76 EmitUtils.factory_method(this, NEW_INSTANCE);
77 generateConstructor(arrays);
78 generateSwap(arrays);
79 end_class();
80 }
81
82 private String getFieldName(int index) {
83 return "FIELD_" + index;
84 }
85
86 private void generateConstructor(Object[] arrays) {
87 CodeEmitter e = begin_method(Constants.ACC_PUBLIC, CSTRUCT_OBJECT_ARRAY, null, null);
88 e.load_this();
89 e.super_invoke_constructor();
90 e.load_this();
91 e.load_arg(0);
92 e.super_putfield("a", Constants.TYPE_OBJECT_ARRAY);
93 for (int i = 0; i < arrays.length; i++) {
94 Type type = Type.getType(arrays[i].getClass());
95 declare_field(Constants.ACC_PRIVATE, getFieldName(i), type, null, null);
96 e.load_this();
97 e.load_arg(0);
98 e.push(i);
99 e.aaload();
100 e.checkcast(type);
101 e.putfield(getFieldName(i));
102 }
103 e.return_value();
104 e.end_method();
105 }
106
107 private void generateSwap(final Object[] arrays) {
108 CodeEmitter e = begin_method(Constants.ACC_PUBLIC, SWAP, null, null);
109 for (int i = 0; i < arrays.length; i++) {
110 Type type = Type.getType(arrays[i].getClass());
111 Type component = TypeUtils.getComponentType(type);
112 Local T = e.make_local(type);
113
114 e.load_this();
115 e.getfield(getFieldName(i));
116 e.store_local(T);
117
118 e.load_local(T);
119 e.load_arg(0);
120
121 e.load_local(T);
122 e.load_arg(1);
123 e.array_load(component);
124
125 e.load_local(T);
126 e.load_arg(1);
127
128 e.load_local(T);
129 e.load_arg(0);
130 e.array_load(component);
131
132 e.array_store(component);
133 e.array_store(component);
134 }
135 e.return_value();
136 e.end_method();
137 }
138 }
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