blob: 0920aabab9d0a32b78b1464e340f104639febc0b [file] [log] [blame]
// 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.
// @dart = 2.9
import "package:expect/expect.dart";
// Tests for closures sharing mutable bindings.
var f;
var g;
setupPlain() {
int j = 1000;
// Two closures sharing variable 'j'; j initially is 1000.
f = (int x) {
var q = j;
j = x;
return q;
};
g = (int x) {
var q = j;
j = x;
return q;
};
}
setupLoop() {
for (int i = 0; i < 2; i++) {
int j = i * 1000; // The last stored closure has j initially 1000.
// Two closures sharing variable 'j'.
f = (int x) {
var q = j;
j = x;
return q;
};
g = (int x) {
var q = j;
j = x;
return q;
};
}
}
setupNestedLoop() {
for (int outer = 0; outer < 2; outer++) {
int j = outer * 1000;
for (int i = 0; i < 2; i++) {
// Two closures sharing variable 'j' in a loop at different nesting.
f = (int x) {
var q = j;
j = x;
return q;
};
g = (int x) {
var q = j;
j = x;
return q;
};
}
}
}
test(setup) {
setup();
Expect.equals(1000, f(100));
Expect.equals(100, f(200));
Expect.equals(200, f(300));
Expect.equals(300, g(400));
Expect.equals(400, g(500));
}
main() {
test(setupPlain);
test(setupLoop);
test(setupNestedLoop);
}