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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.
// Test various setter situations, testing special cases in optimizing compiler.
// VMOptions=--optimization-counter-threshold=10 --no-use-osr
import "package:expect/expect.dart";
class A {
int field = 0;
}
class B extends A {}
void sameImplicitSetter() {
oneTarget(var a, var v) {
a.field = v;
}
A a = new A();
B b = new B();
// Optimize 'oneTarget' for one class, one target.
for (int i = 0; i < 20; i++) {
oneTarget(a, 5);
Expect.equals(5, a.field);
}
// Deoptimize 'oneTarget', since class B is not expected.
oneTarget(b, 6);
Expect.equals(6, b.field);
// Optimize 'oneTarget' for A and B classes, one target.
for (int i = 0; i < 20; i++) {
oneTarget(a, 7);
Expect.equals(7, a.field);
}
oneTarget(b, 8);
Expect.equals(8, b.field);
}
// Deoptimize when no feedback exists.
void setterNoFeedback() {
maybeSet(var a, var v, bool set_it) {
if (set_it) {
return a.field = v;
}
return -1;
}
A a = new A();
for (int i = 0; i < 20; i++) {
var r = maybeSet(a, 5, false);
Expect.equals(0, a.field);
Expect.equals(-1, r);
}
var r = maybeSet(a, 5, true);
Expect.equals(5, a.field);
Expect.equals(5, r);
for (int i = 0; i < 20; i++) {
var r = maybeSet(a, 6, true);
Expect.equals(6, a.field);
Expect.equals(6, r);
}
}
// Check non-implicit setter
class X {
int pField = 0;
set field(v) {
pField = v;
}
get field => 10;
}
void sameNotImplicitSetter() {
oneTarget(var a, var v) {
return a.field = v;
}
incField(var a) {
a.field++;
}
X x = new X();
for (int i = 0; i < 20; i++) {
var r = oneTarget(x, 3);
Expect.equals(3, x.pField);
Expect.equals(3, r);
}
oneTarget(x, 0);
for (int i = 0; i < 20; i++) {
incField(x);
}
Expect.equals(11, x.pField);
}
class Y {
int field = 0;
}
multiImplicitSetter() {
oneTarget(var a, var v) {
return a.field = v;
}
// Both classes 'Y' and 'A' have a distinct field getter.
A a = new A();
Y y = new Y();
for (int i = 0; i < 20; i++) {
var r = oneTarget(a, 5);
Expect.equals(5, a.field);
Expect.equals(5, r);
r = oneTarget(y, 6);
Expect.equals(6, y.field);
Expect.equals(6, r);
}
}
class Z {
int pField = 0;
set field(v) {
pField = v;
}
get field => 10;
}
multiNotImplicitSetter() {
oneTarget(var a, var v) {
return a.field = v;
}
Y y = new Y();
Z z = new Z();
for (int i = 0; i < 20; i++) {
var r = oneTarget(y, 8);
Expect.equals(8, y.field);
Expect.equals(8, r);
r = oneTarget(z, 12);
Expect.equals(12, z.pField);
Expect.equals(12, r);
}
A a = new A();
var r = oneTarget(a, 11);
Expect.equals(11, a.field);
Expect.equals(11, r);
}
void main() {
sameImplicitSetter();
setterNoFeedback();
sameNotImplicitSetter();
multiImplicitSetter();
multiNotImplicitSetter();
}