1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
/* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Rhino code, released
* May 6, 1999.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1997-1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Norris Boyd
* Igor Bukanov
* Frank Mitchell
* Mike Shaver
* Kemal Bayram
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU General Public License Version 2 or later (the "GPL"), in which
* case the provisions of the GPL are applicable instead of those above. If
* you wish to allow use of your version of this file only under the terms of
* the GPL and not to allow others to use your version of this file under the
* MPL, indicate your decision by deleting the provisions above and replacing
* them with the notice and other provisions required by the GPL. If you do
* not delete the provisions above, a recipient may use your version of this
* file under either the MPL or the GPL.
*
* ***** END LICENSE BLOCK ***** */
package org.mozilla.javascript;
import java.lang.reflect.Array;
/**
* This class reflects Java arrays into the JavaScript environment.
*
* @author Mike Shaver
* @see NativeJavaClass
* @see NativeJavaObject
* @see NativeJavaPackage
*/
public class NativeJavaArray extends NativeJavaObject
{
static final long serialVersionUID = -924022554283675333L;
public String getClassName() {
return "JavaArray";
}
public static NativeJavaArray wrap(Scriptable scope, Object array) {
return new NativeJavaArray(scope, array);
}
public Object unwrap() {
return array;
}
public NativeJavaArray(Scriptable scope, Object array) {
super(scope, null, ScriptRuntime.ObjectClass);
Class cl = array.getClass();
if (!cl.isArray()) {
throw new RuntimeException("Array expected");
}
this.array = array;
this.length = Array.getLength(array);
this.cls = cl.getComponentType();
}
public boolean has(String id, Scriptable start) {
return id.equals("length") || super.has(id, start);
}
public boolean has(int index, Scriptable start) {
return 0 <= index && index < length;
}
public Object get(String id, Scriptable start) {
if (id.equals("length"))
return new Integer(length);
Object result = super.get(id, start);
if (result == NOT_FOUND &&
!ScriptableObject.hasProperty(getPrototype(), id))
{
throw Context.reportRuntimeError2(
"msg.java.member.not.found", array.getClass().getName(), id);
}
return result;
}
public Object get(int index, Scriptable start) {
if (0 <= index && index < length) {
Context cx = Context.getContext();
Object obj = Array.get(array, index);
return cx.getWrapFactory().wrap(cx, this, obj, cls);
}
return Undefined.instance;
}
public void put(String id, Scriptable start, Object value) {
// Ignore assignments to "length"--it's readonly.
if (!id.equals("length"))
throw Context.reportRuntimeError1(
"msg.java.array.member.not.found", id);
}
public void put(int index, Scriptable start, Object value) {
if (0 <= index && index < length) {
Array.set(array, index, Context.jsToJava(value, cls));
}
else {
throw Context.reportRuntimeError2(
"msg.java.array.index.out.of.bounds", String.valueOf(index),
String.valueOf(length - 1));
}
}
public Object getDefaultValue(Class hint) {
if (hint == null || hint == ScriptRuntime.StringClass)
return array.toString();
if (hint == ScriptRuntime.BooleanClass)
return Boolean.TRUE;
if (hint == ScriptRuntime.NumberClass)
return ScriptRuntime.NaNobj;
return this;
}
public Object[] getIds() {
Object[] result = new Object[length];
int i = length;
while (--i >= 0)
result[i] = new Integer(i);
return result;
}
public boolean hasInstance(Scriptable value) {
if (!(value instanceof Wrapper))
return false;
Object instance = ((Wrapper)value).unwrap();
return cls.isInstance(instance);
}
public Scriptable getPrototype() {
if (prototype == null) {
prototype =
ScriptableObject.getClassPrototype(this.getParentScope(),
"Array");
}
return prototype;
}
Object array;
int length;
Class cls;
}
|
