Mercurial > jdk8-mips64-public > nashorn / file revision

 /*

  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  * 

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  * 

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  * 

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  * 

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  */

 /**

  * JDK-8023630: Implement Java.super() as the preferred way to call super methods

  *

  * @test

  * @run

  */

 var CharArray = Java.type("char[]")

 var jString = Java.type("java.lang.String")

 var Character = Java.type("java.lang.Character")

 function capitalize(s) {

     if(s instanceof CharArray) {

         return new jString(s).toUpperCase()

     }

     if(s instanceof jString) {

         return s.toUpperCase()

     }

     return Character.toUpperCase(s) // must be int

 }

 var sw = new (Java.type("java.io.StringWriter"))

 var FilterWriterAdapter = Java.extend(Java.type("java.io.FilterWriter"))

 var cw = new FilterWriterAdapter(sw) {

     write: function(s, off, len) {

         s = capitalize(s)

         // Must handle overloads by arity

         if(off === undefined) {	

             cw_super.write(s, 0, s.length())

         } else if (typeof s === "string") {

             cw_super.write(s, off, len)

         }

     }

 }

 var cw_super = Java.super(cw)

 cw.write("abcd")

 cw.write("e".charAt(0))

 cw.write("fgh".toCharArray())

 cw.write("**ijk**", 2, 3)

 cw.write("***lmno**".toCharArray(), 3, 4)

 cw.flush()

 print(sw)

 // Can invoke super for Object methods

 print("cw_super has hashCode(): " + (typeof cw_super.hashCode === "function"))

 print("cw_super has super equals(): " + (typeof cw_super.equals === "function"))

 // Can't invoke super for final methods

 print("cw_super has no getClass(): " + (typeof cw_super.getClass === "undefined"))

 print("cw_super has no wait(): " + (typeof cw_super.wait === "undefined"))

 var r = new (Java.type("java.lang.Runnable"))(function() {})

 var r_super = Java.super(r)

 // Can't invoke super for abstract methods

 print("r_super has no run(): " + (typeof r_super.run === "undefined"))

 // Interfaces can also invoke super Object methods

 print("r_super has hashCode(): " + (typeof r_super.hashCode === "function"))

 print("r_super has equals(): " + (typeof r_super.equals === "function"))

 // But still can't invoke final methods

 print("r_super has no getClass(): " + (typeof r_super.getClass === "undefined"))

 print("r_super has no wait(): " + (typeof r_super.wait === "undefined"))

 var name = "write"

 print("cw_super can access write through [] getter: " + (typeof cw_super[name] === "function"))

 var name = "hashCode"

 print("cw_super can access hashCode through [] getter: " + (typeof cw_super[name] === "function"))

 var name = "getClass"

 print("cw_super can not access getClass through [] getter: " + (typeof cw_super[name] === "undefined"))