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// Copyright (c) 2011, 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.
// Tests that lhs of a compound assignment is executed only once.
// VMOptions=--optimization-counter-threshold=10 --no-background-compilation
// @dart = 2.9
import "package:expect/expect.dart";
class Indexed {
Indexed()
: _f = new List(10),
count = 0 {
_f[0] = 100;
_f[1] = 200;
}
operator [](i) {
count++;
return _f;
}
var count;
var _f;
}
var result;
class A {
get field {
result.add(1);
return 1;
}
set field(value) {}
static get static_field {
result.add(0);
return 1;
}
static set static_field(value) {
result.add(1);
}
}
class CompoundAssignmentOperatorTest {
static void testIndexed() {
Indexed indexed = new Indexed();
Expect.equals(0, indexed.count);
var tmp = indexed[0];
Expect.equals(1, indexed.count);
Expect.equals(100, indexed[4][0]);
Expect.equals(2, indexed.count);
Expect.equals(100, indexed[4][0]++);
Expect.equals(3, indexed.count);
Expect.equals(101, indexed[4][0]);
Expect.equals(4, indexed.count);
indexed[4][0] += 10;
Expect.equals(5, indexed.count);
Expect.equals(111, indexed[4][0]);
var i = 0;
indexed[3][i++] += 1;
Expect.equals(1, i);
}
static testIndexedMore() {
result = [];
array() {
result.add(0);
return [0];
}
index() {
result.add(1);
return 0;
}
middle() {
result.add(2);
}
sequence(a, b, c) {
result.add(3);
}
sequence(array()[index()] += 1, middle(), array()[index()] += 1);
Expect.listEquals([0, 1, 2, 0, 1, 3], result);
}
static testIndexedMoreMore() {
result = [];
middle() {
result.add(2);
}
obj() {
result.add(0);
return new A();
}
sequence(a, b, c) {
result.add(3);
}
sequence(obj().field += 1, middle(), obj().field += 1);
Expect.listEquals([0, 1, 2, 0, 1, 3], result);
result = [];
sequence(A.static_field++, middle(), A.static_field++);
Expect.listEquals([0, 1, 2, 0, 1, 3], result);
}
static void testMain() {
for (int i = 0; i < 20; i++) {
testIndexed();
testIndexedMore();
testIndexedMoreMore();
}
}
}
main() {
CompoundAssignmentOperatorTest.testMain();
}