JDK-8023630.js revision 520:f18f2ce1b2dc 
1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * JDK-8023630: Implement Java.super() as the preferred way to call super methods
26 *
27 * @test
28 * @run
29 */
30
31var CharArray = Java.type("char[]")
32var jString = Java.type("java.lang.String")
33var Character = Java.type("java.lang.Character")
34
35function capitalize(s) {
36    if(s instanceof CharArray) {
37        return new jString(s).toUpperCase()
38    }
39    if(s instanceof jString) {
40        return s.toUpperCase()
41    }
42    return Character.toUpperCase(s) // must be int
43}
44
45var sw = new (Java.type("java.io.StringWriter"))
46
47var FilterWriterAdapter = Java.extend(Java.type("java.io.FilterWriter"))
48
49var cw = new FilterWriterAdapter(sw) {
50    write: function(s, off, len) {
51        s = capitalize(s)
52        // Must handle overloads by arity
53        if(off === undefined) {
54            cw_super.write(s, 0, s.length())
55        } else if (typeof s === "string") {
56            cw_super.write(s, off, len)
57        }
58    }
59}
60var cw_super = Java.super(cw)
61
62cw.write("abcd")
63cw.write("e".charAt(0))
64cw.write("fgh".toCharArray())
65cw.write("**ijk**", 2, 3)
66cw.write("***lmno**".toCharArray(), 3, 4)
67cw.flush()
68print(sw)
69
70// Can invoke super for Object methods
71print("cw_super has hashCode(): " + (typeof cw_super.hashCode === "function"))
72print("cw_super has super equals(): " + (typeof cw_super.equals === "function"))
73// Can't invoke super for final methods
74print("cw_super has no getClass(): " + (typeof cw_super.getClass === "undefined"))
75print("cw_super has no wait(): " + (typeof cw_super.wait === "undefined"))
76
77var r = new (Java.type("java.lang.Runnable"))(function() {})
78var r_super = Java.super(r)
79
80// Can't invoke super for abstract methods
81print("r_super has no run(): " + (typeof r_super.run === "undefined"))
82// Interfaces can also invoke super Object methods
83print("r_super has hashCode(): " + (typeof r_super.hashCode === "function"))
84print("r_super has equals(): " + (typeof r_super.equals === "function"))
85// But still can't invoke final methods
86print("r_super has no getClass(): " + (typeof r_super.getClass === "undefined"))
87print("r_super has no wait(): " + (typeof r_super.wait === "undefined"))
88
89var name = "write"
90print("cw_super can access write through [] getter: " + (typeof cw_super[name] === "function"))
91var name = "hashCode"
92print("cw_super can access hashCode through [] getter: " + (typeof cw_super[name] === "function"))
93var name = "getClass"
94print("cw_super can not access getClass through [] getter: " + (typeof cw_super[name] === "undefined"))
95