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 
  31 var CharArray = Java.type("char[]")
  32 var jString = Java.type("java.lang.String")
  33 var Character = Java.type("java.lang.Character")
  34 
  35 function 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 
  45 var sw = new (Java.type("java.io.StringWriter"))
  46 
  47 var FilterWriterAdapter = Java.extend(Java.type("java.io.FilterWriter"))
  48 
  49 var 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 }
  60 var cw_super = Java.super(cw)
  61 
  62 cw.write("abcd")
  63 cw.write("e".charAt(0))
  64 cw.write("fgh".toCharArray())
  65 cw.write("**ijk**", 2, 3)
  66 cw.write("***lmno**".toCharArray(), 3, 4)
  67 cw.flush()
  68 print(sw)
  69 
  70 // Can invoke super for Object methods
  71 print("cw_super has hashCode(): " + (typeof cw_super.hashCode === "function"))
  72 print("cw_super has super equals(): " + (typeof cw_super.equals === "function"))
  73 // Can't invoke super for final methods
  74 print("cw_super has no getClass(): " + (typeof cw_super.getClass === "undefined"))
  75 print("cw_super has no wait(): " + (typeof cw_super.wait === "undefined"))
  76 
  77 var r = new (Java.type("java.lang.Runnable"))(function() {})
  78 var r_super = Java.super(r)
  79 
  80 // Can't invoke super for abstract methods
  81 print("r_super has no run(): " + (typeof r_super.run === "undefined"))
  82 // Interfaces can also invoke super Object methods
  83 print("r_super has hashCode(): " + (typeof r_super.hashCode === "function"))
  84 print("r_super has equals(): " + (typeof r_super.equals === "function"))
  85 // But still can't invoke final methods
  86 print("r_super has no getClass(): " + (typeof r_super.getClass === "undefined"))
  87 print("r_super has no wait(): " + (typeof r_super.wait === "undefined"))
  88 
  89 var name = "write"
  90 print("cw_super can access write through [] getter: " + (typeof cw_super[name] === "function"))
  91 var name = "hashCode"
  92 print("cw_super can access hashCode through [] getter: " + (typeof cw_super[name] === "function"))
  93 var name = "getClass"
  94 print("cw_super can not access getClass through [] getter: " + (typeof cw_super[name] === "undefined"))