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>
64 lines
2.1 KiB
Dart
64 lines
2.1 KiB
Dart
// Copyright (c) 2017, 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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/*member: main:[null]*/
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main() {
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assumeDynamic();
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notAssumeDynamic();
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trustReturnTypeString();
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trustParameterTypeString();
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}
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////////////////////////////////////////////////////////////////////////////////
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// Use annotation to assume parameter of [_assumeDynamic] is 'dynamic', i.e.
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// could be any object, regardless of actuall call sites.
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//
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// [_assumeDynamic] is used in several tests below to force inference to create
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// the 'dynamic' type.
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////////////////////////////////////////////////////////////////////////////////
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/*member: _assumeDynamic:[null|subclass=Object]*/
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@pragma('dart2js:assumeDynamic')
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_assumeDynamic(/*[null|subclass=Object]*/ o) => o;
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/*member: assumeDynamic:[null]*/
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assumeDynamic() {
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_assumeDynamic(0);
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}
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////////////////////////////////////////////////////////////////////////////////
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// As above but without the annotation.
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////////////////////////////////////////////////////////////////////////////////
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/*member: _notAssumeDynamic:[exact=JSUInt31]*/
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_notAssumeDynamic(/*[exact=JSUInt31]*/ o) => o;
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/*member: notAssumeDynamic:[null]*/
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notAssumeDynamic() {
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_notAssumeDynamic(0);
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}
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////////////////////////////////////////////////////////////////////////////////
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// No annotation is needed to trust return type annotation.
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////////////////////////////////////////////////////////////////////////////////
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/*member: trustReturnTypeString:[null|exact=JSString]*/
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String trustReturnTypeString() {
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return _assumeDynamic(0);
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}
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////////////////////////////////////////////////////////////////////////////////
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// No annotation is needed to trust parameter type annotation.
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////////////////////////////////////////////////////////////////////////////////
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/*member: _trustParameterTypeString:[null]*/
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_trustParameterTypeString(String /*[null|exact=JSString]*/ o) {}
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/*member: trustParameterTypeString:[null]*/
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trustParameterTypeString() {
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_trustParameterTypeString(_assumeDynamic(0));
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}
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