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https://github.com/jerryscript-project/jerryscript.git
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d1860d0e34
This patch is the second milestone of the implementation of this new language element. Supported: - Single class inheritance - Functionality of 'super' keyword - Implicit constructor in class heritage - Specific behaviour while extending with the built-in 'Array' or '%TypedArray%' object - Abstract subclasses (Mix-ins) JerryScript-DCO-1.0-Signed-off-by: Robert Fancsik frobert@inf.u-szeged.hu
86 lines
2.0 KiB
JavaScript
86 lines
2.0 KiB
JavaScript
/* Copyright JS Foundation and other contributors, http://js.foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var A = Array;
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var order = 0;
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function f () {
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order++;
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return function () {
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return A;
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}
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}
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var B = class extends f ()() {
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constructor () {
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assert (++order === 2);
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eval ("eval ('super (1, 2, 3, 4)')");
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try {
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super (1, 2, 3, 4, 5)
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assert (false);
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} catch (e) {
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assert (e instanceof ReferenceError)
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}
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assert (this.g ()()()() === 10);
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assert (eval ("eval ('this.g ()')()")()() === 10);
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assert (eval ("eval ('this.g ()')")()()() === 10);
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assert (eval ("eval ('this.g ()()()')")() === 10);
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assert (eval ("eval ('this.g')")()()()() === 10);
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this.push (5);
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assert (this.length === 5)
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eval ('this.push (6)');
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assert (this.length === 6);
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eval ("eval ('this.push (7)')");
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this.j = 6;
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return;
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}
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}
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var C = class extends B {
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g () {
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return function () {
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return () => {
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return 10;
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}
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}
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}
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}
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var D = class D extends C {
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constructor () {
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super ();
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this.k = 5;
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return
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}
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g () {
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return eval ('super["g"]');
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}
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}
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assert (order === 1);
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var d = new D;
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assert (d.length === 7);
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assert (d.k === 5);
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assert (d.j === 6);
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assert (d instanceof D);
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assert (d instanceof C);
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assert (d instanceof B);
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assert (d instanceof f ()());
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assert (JSON.stringify (d) === "[1,2,3,4,5,6,7]");
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