Robert Fancsik
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
51 lines
1.1 KiB
JavaScript
51 lines
1.1 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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order = 0;
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var Mixin1 = (superclass) => class extends superclass {
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foo () {
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assert (order++ == 1)
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if (super.foo) {
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super.foo ();
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}
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}
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};
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var Mixin2 = (superclass) => class extends superclass {
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foo () {
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assert (order++ == 2)
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if (super.foo) {
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assert (super.foo () === 5);
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}
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}
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};
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class S {
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foo () {
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assert (order++ == 3)
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return 5;
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}
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}
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class C extends Mixin1 (Mixin2 (S)) {
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foo () {
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assert (order++ == 0)
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super.foo ();
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}
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}
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new C ().foo ()
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