dart-sdk/tests/language/instance/inline_test.dart
Robert Nystrom d3ef98ea3b Migrate language_2/instance to NNBD.
Change-Id: I058f81e4af6e962b2620810dbfe75c7ac86b9d11
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148948
Auto-Submit: Bob Nystrom <rnystrom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
Commit-Queue: Bob Nystrom <rnystrom@google.com>
2020-05-26 18:35:20 +00:00

28 lines
909 B
Dart

// Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
import "package:expect/expect.dart";
// Test inlining of assignments in parameter passing. If [StringScanner.charAt]
// is inlined, the argument expression `++byteOffset` should not be duplicated.
class StringScanner {
final String string;
int byteOffset = -1;
StringScanner(this.string);
int nextByte() => charAt(++byteOffset);
int charAt(index) => (string.length > index) ? string.codeUnitAt(index) : -1;
}
void main() {
var scanner = new StringScanner('az9');
Expect.equals(0x61, scanner.nextByte()); // Expect a.
Expect.equals(0x7A, scanner.nextByte()); // Expect z.
Expect.equals(0x39, scanner.nextByte()); // Expect 9.
Expect.equals(-1, scanner.nextByte());
}