Joshua Litt
20faaa5d94
Change-Id: Ib18f554c1076f27a3f7c0df5a36410da41a1f467 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148784 Reviewed-by: Paul Berry <paulberry@google.com> Reviewed-by: Sigmund Cherem <sigmund@google.com>
68 lines
1.8 KiB
Dart
68 lines
1.8 KiB
Dart
// Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// @dart = 2.7
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// Check that calls through fields elide the call-through stub. This
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// optimization is done by the simplifier, so inlining does not need to be
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// enabled.
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import 'package:async_helper/async_helper.dart';
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import 'package:expect/expect.dart';
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import '../helpers/compiler_helper.dart';
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const String TEST1 = r'''
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class W {
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final Function _fun;
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W(this._fun);
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foo(zzz) => _fun(zzz); // this._fun$1(zzz) --> this._fun.call$1(zzz)
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}
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add1(x) => x + 1;
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main() {
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var w = new W(add1);
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var x = w.foo(42);
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}
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''';
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const String TEST2 = r'''
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class W {
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final Function __fun;
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Function get _fun => __fun;
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W(this.__fun);
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foo(zzz) => _fun(zzz); // this._fun$1(zzz) stays same.
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}
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add1(x) => x + 1;
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main() {
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var w = new W(add1);
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var x = w.foo(42);
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}
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''';
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main() {
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runTests() async {
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String generated1 = await compileAll(TEST1);
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// Direct call through field.
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Expect.isTrue(generated1.contains(r'this._fun.call$1(zzz)'));
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// No stub.
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Expect.isFalse(generated1.contains(r'_fun$1:'));
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// No call to stub.
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Expect.isFalse(generated1.contains(r'_fun$1('));
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String generated2 = await compileAll(TEST2);
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// No call through field.
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Expect.isFalse(generated2.contains(r'this._fun.call$1(zzz)'));
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// Call through stub.
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Expect.isTrue(generated2.contains(r'this._fun$1(zzz)'));
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// Stub is generated.
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Expect.isTrue(generated2.contains(r'_fun$1:'));
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// Call through getter (inside stub).
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Expect.isTrue(generated2.contains(r'get$_fun().call$1'));
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}
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asyncTest(() async {
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print('--test from kernel------------------------------------------------');
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await runTests();
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});
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}
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