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>
114 lines
3.1 KiB
Dart
114 lines
3.1 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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simpleDo();
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doNull();
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doNotNull();
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doNullFalse();
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doNotNullTrue();
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doUnion();
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Simple int based do-while loop.
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////////////////////////////////////////////////////////////////////////////////
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/*member: simpleDo:[null]*/
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simpleDo() {
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var i = 0;
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do {
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i = i /*invoke: [subclass=JSPositiveInt]*/ + 1;
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} while (i /*invoke: [subclass=JSPositiveInt]*/ < 10);
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i. /*invoke: [subclass=JSPositiveInt]*/ abs();
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Do-while loop with null test.
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////////////////////////////////////////////////////////////////////////////////
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/*member: doNull:[exact=JSString]*/
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doNull() {
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var o;
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do {
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o = o. /*invoke: [null|exact=JSString]*/ toString();
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} while (o == null);
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return o;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Do-while loop with not-null test.
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////////////////////////////////////////////////////////////////////////////////
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/*member: doNotNull:[exact=JSString]*/
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doNotNull() {
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var o = '';
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do {
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o = o. /*invoke: [exact=JSString]*/ toString();
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} while (o /*invoke: [null|exact=JSString]*/ != null);
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return o;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Do-while loop with null test known to be false.
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////////////////////////////////////////////////////////////////////////////////
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/*member: doNullFalse:[exact=JSString]*/
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doNullFalse() {
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var o = '';
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do {
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o = o. /*invoke: [exact=JSString]*/ toString();
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} while (o /*invoke: [null|exact=JSString]*/ == null);
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return o;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Do-while loop with not-null test known to be true.
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////////////////////////////////////////////////////////////////////////////////
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/*member: doNotNullTrue:[exact=JSString]*/
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doNotNullTrue() {
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var o = null;
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do {
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o = o. /*invoke: [null|exact=JSString]*/ toString();
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} while (o != null);
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return o;
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}
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////////////////////////////////////////////////////////////////////////////////
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/// Do-while loop with not-null test that mixes field accesses.
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////////////////////////////////////////////////////////////////////////////////
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/*member: Class1.:[exact=Class1]*/
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class Class1 {
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/*member: Class1.field:[null|exact=Class2]*/
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var field;
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}
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/*member: Class2.:[exact=Class2]*/
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class Class2 {
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/*member: Class2.field:[null|exact=Class1]*/
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var field;
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}
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/*member: _doUnion:Union(null, [exact=Class1], [exact=Class2])*/
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_doUnion(/*[exact=Class1]*/ o) {
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do {
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o = o. /*Union(null, [exact=Class1], [exact=Class2])*/ field;
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} while (o != null);
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return o;
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}
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/*member: doUnion:[null]*/
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doUnion() {
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var c1 = new Class1();
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var c2 = new Class2();
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c1. /*update: [exact=Class1]*/ field = c2;
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c2. /*update: [exact=Class2]*/ field = c1;
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_doUnion(c1);
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}
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