Canonical output ordering for constants.

tests/compiler/dart2js_extra/many_constants_test.dart

+// Copyright (c) 2015, 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.
+
+// This program has many similar constants that should all have distinct
+// identities. They are sufficiently similar to have name collisions and need
+// ordering by constant value.
+
+import "package:expect/expect.dart";
+
+enum E { A, B, C, D }
+
+class Z {
+  final a, b, c, d, e, f;
+  const Z({this.a: 1, this.b: 1, this.c: 1, this.d: 1, this.e: 1, this.f: 1});
+}
+
+const c1 = const {};
+const c2 = const <int, int>{};
+const c3 = const <dynamic, int>{};
+const c4 = const <int, dynamic>{};
+const l1 = const [];
+const l2 = const <int>[];
+const l3 = const <String>[];
+const l4 = const <num>[];
+
+const ll1 = const [1, 2, 3, 4, 5, 6, 7];
+const ll2 = const [1, 8, 3, 4, 5, 6, 7];
+const ll3 = const [1, 2, 8, 4, 5, 6, 7];
+const ll4 = const [1, 2, 3, 4, 8, 6, 7];
+
+const m1 = const {1: 1, 2: 2};
+const m2 = const {1: 2, 2: 1};
+const m3 = const {1: 1, 2: 1};
+const m4 = const {1: 2, 2: 2};
+const m5 = const {2: 1, 1: 2};
+const m6 = const {2: 2, 1: 1};
+const m7 = const {2: 1, 1: 1};
+const m8 = const {2: 2, 1: 2};
+const m9 = const <int,int>{1: 1, 2: 2};
+const mA = const <int,int>{1: 2, 2: 1};
+const mB = const <int,int>{1: 1, 2: 1};
+const mC = const <int,int>{1: 2, 2: 2};
+
+const mE1 = const {E.A: E.B};
+const mE2 = const {E.A: E.C};
+const mE3 = const {E.A: 0, E.B: 0};
+const mE4 = const {E.A: 0, E.C: 0};
+const mE5 = const {E.A: 0, E.B: 0, E.C: 4};
+const mE6 = const {E.A: 0, E.B: 0, E.C: 2};
+const mE7 = const {E.A: 0, E.B: 0, E.C: 3};
+const mE8 = const {E.A: 0, E.B: 0, E.C: 1};
+
+const z1 = const Z(f: 3);
+const z2 = const Z(f: 2);
+const z3 = const Z(f: 1);
+const z4 = const Z(e: 2);
+const z5 = const Z(d: 3);
+const z6 = const Z(d: 2);
+
+makeAll() => {
+  'E.A': E.A, 'E.B': E.B, 'E.C': E.C, 'E.D': E.D,
+  'c1': c1, 'c2': c2, 'c3': c3, 'c4': c4,
+  'l1': l1, 'l2': l2, 'l3': l3, 'l4': l4,
+  'll1': ll1, 'll2': ll2, 'll3': ll3, 'l4': ll4,
+  'm1': m1, 'm2': m2, 'm3': m3, 'm4': m4,
+  'm5': m5, 'm6': m6, 'm7': m7, 'm8': m8,
+  'm9': m9, 'mA': mA, 'mB': mB, 'mC': mC,
+  'mE1': mE1, 'mE2': mE2, 'mE3': mE3, 'mE4': mE4,
+  'mE5': mE5, 'mE6': mE6, 'mE7': mE7, 'mE8': mE8,
+  'z1': z1, 'z2': z2, 'z3': z3, 'z4': z4, 'z5': z5, 'z6': z6,
+};
+
+main() {
+  var all1 = makeAll();
+  var all2 = makeAll();
+
+  for (var name1 in all1.keys) {
+    var e1 = all1[name1];
+    for (var name2 in all2.keys) {
+      if (name1 == name2) continue;
+      var e2 = all2[name2];
+      Expect.isFalse(identical(e1, e2),
+                     'Different instances  $name1: $e1  $name2: $e2');
+    }
+  }
+}