Kallen Tu
c86af3c39b
Change-Id: I9ae6c17967c98770ed06dead200c8bd87ae7f2a9 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/309829 Reviewed-by: Konstantin Shcheglov <scheglov@google.com> Commit-Queue: Kallen Tu <kallentu@google.com> Reviewed-by: Brian Wilkerson <brianwilkerson@google.com>
106 lines
2.0 KiB
Dart
106 lines
2.0 KiB
Dart
// Copyright (c) 2021, 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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// Tests closures with const functions.
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// SharedOptions=--enable-experiment=const-functions
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import "package:expect/expect.dart";
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const var1 = foo();
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// ^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_METHOD_INVOCATION
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int foo() {
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var f = () {
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int count = 0;
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int baz() {
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++count;
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return count;
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}
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return baz;
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};
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var c1 = f();
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var c2 = f();
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var c1_val1 = c1();
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assert(c1_val1 == 1);
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var c1_val2 = c1();
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assert(c1_val2 == 2);
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var c1_val3 = c1();
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assert(c1_val3 == 3);
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var c2_val1 = c2();
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assert(c1_val1 == 1);
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var c2_val2 = c2();
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assert(c1_val2 == 2);
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var c2_val3 = c2();
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assert(c1_val3 == 3);
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return 0;
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}
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const var2 = fn();
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// ^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_METHOD_INVOCATION
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int fn() {
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return (() => 0)();
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}
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const y = 1;
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const var3 = fn3();
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// ^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_METHOD_INVOCATION
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int fn3() {
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int y = 2;
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return y;
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}
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const var4 = fn4();
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// ^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_METHOD_INVOCATION
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int fn4() {
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var x = 0;
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int innerFn() {
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return x;
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}
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return innerFn();
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}
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const var5 = fn5(3);
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// ^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_METHOD_INVOCATION
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int fn5(int a) {
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int recurse(int b) {
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if (b == 1) return 1;
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int result = recurse(b - 1);
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return b * result;
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}
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return recurse(a);
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}
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const var6 = fn6(4);
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// ^^^^^^
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// [analyzer] COMPILE_TIME_ERROR.CONST_EVAL_METHOD_INVOCATION
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int fn6(int a) {
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int recurse() {
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a--;
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if (a == 1) return 1;
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return a * recurse();
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}
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return recurse();
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}
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void main() {
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Expect.equals(var1, 0);
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Expect.equals(var2, 0);
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Expect.equals(var3, 2);
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Expect.equals(var4, 0);
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Expect.equals(var5, 6);
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Expect.equals(var6, 6);
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}
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