author | sundar |
Wed, 06 May 2015 20:04:42 +0530 | |
changeset 30394 | 72a59e4dffea |
parent 24778 | 2ff5d7041566 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/** |
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* JDK-8023630: Implement Java.super() as the preferred way to call super methods |
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* |
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* @test |
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* @run |
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*/ |
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var CharArray = Java.type("char[]") |
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var jString = Java.type("java.lang.String") |
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var Character = Java.type("java.lang.Character") |
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function capitalize(s) { |
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if(s instanceof CharArray) { |
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return new jString(s).toUpperCase() |
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} |
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if(s instanceof jString) { |
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return s.toUpperCase() |
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} |
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return Character.toUpperCase(s) // must be int |
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} |
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var sw = new (Java.type("java.io.StringWriter")) |
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var FilterWriterAdapter = Java.extend(Java.type("java.io.FilterWriter")) |
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var cw = new FilterWriterAdapter(sw) { |
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write: function(s, off, len) { |
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s = capitalize(s) |
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// Must handle overloads by arity |
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if(off === undefined) { |
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cw_super.write(s, 0, s.length()) |
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} else if (typeof s === "string") { |
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cw_super.write(s, off, len) |
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} |
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} |
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} |
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var cw_super = Java.super(cw) |
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cw.write("abcd") |
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cw.write("e".charAt(0)) |
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cw.write("fgh".toCharArray()) |
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cw.write("**ijk**", 2, 3) |
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cw.write("***lmno**".toCharArray(), 3, 4) |
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cw.flush() |
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print(sw) |
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// Can invoke super for Object methods |
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print("cw_super has hashCode(): " + (typeof cw_super.hashCode === "function")) |
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print("cw_super has super equals(): " + (typeof cw_super.equals === "function")) |
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// Can't invoke super for final methods |
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print("cw_super has no getClass(): " + (typeof cw_super.getClass === "undefined")) |
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print("cw_super has no wait(): " + (typeof cw_super.wait === "undefined")) |
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var r = new (Java.type("java.lang.Runnable"))(function() {}) |
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var r_super = Java.super(r) |
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// Can't invoke super for abstract methods |
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print("r_super has no run(): " + (typeof r_super.run === "undefined")) |
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// Interfaces can also invoke super Object methods |
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print("r_super has hashCode(): " + (typeof r_super.hashCode === "function")) |
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print("r_super has equals(): " + (typeof r_super.equals === "function")) |
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// But still can't invoke final methods |
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print("r_super has no getClass(): " + (typeof r_super.getClass === "undefined")) |
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print("r_super has no wait(): " + (typeof r_super.wait === "undefined")) |
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var name = "write" |
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print("cw_super can access write through [] getter: " + (typeof cw_super[name] === "function")) |
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var name = "hashCode" |
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print("cw_super can access hashCode through [] getter: " + (typeof cw_super[name] === "function")) |
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var name = "getClass" |
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print("cw_super can not access getClass through [] getter: " + (typeof cw_super[name] === "undefined")) |