author | hannesw |
Mon, 23 Apr 2018 17:45:05 +0200 | |
changeset 49855 | 3739e9a5b6b5 |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
/* * 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"))