Implement constant maps.

tests/language/src/CompileTimeConstantATest.dart

+// Copyright (c) 2012, 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.
+
+final m1 = const { 'a': 400 + 99 };
+final m2 = const { 'a': 499, 'b': 42 };
+final m3 = const { 'm1': m1, 'm2': m2 };
+final m4 = const { 'z': 9, 'a': 8, 'm': 7 };
+final m5 = const { '': 499 };
+final m6 = const { 'a': 499 };
+final m7 = const {};
+
+bool isIllegalAccessException(o) => o is IllegalAccessException;
+
+main() {
+  Expect.equals(499, m1['a']);
+  Expect.equals(null, m1['b']);
+  Expect.listEquals(['a'], m1.getKeys());
+  Expect.listEquals([499], m1.getValues());
+  Expect.isTrue(m1.containsKey('a'));
+  Expect.isFalse(m1.containsKey('toString'));
+  Expect.isTrue(m1.containsValue(499));
+  Expect.isFalse(m1.containsValue(42));
+  Expect.isFalse(m1.containsValue(null));
+  var seenKeys = [];
+  var seenValues = [];
+  m1.forEach((key, value) {
+    seenKeys.add(key);
+    seenValues.add(value);
+  });
+  Expect.listEquals(['a'], seenKeys);
+  Expect.listEquals([499], seenValues);
+  Expect.isFalse(m1.isEmpty());
+  Expect.equals(1, m1.length);
+  Expect.throws(() => m1.remove('a'), isIllegalAccessException);
+  Expect.throws(() => m1.remove('b'), isIllegalAccessException);
+  Expect.throws(() => m1.clear(), isIllegalAccessException);
+  Expect.throws(() => m1['b'] = 42, isIllegalAccessException);
+  Expect.throws(() => m1['a'] = 499, isIllegalAccessException);
+  Expect.throws(() => m1.putIfAbsent('a', () => 499),
+                isIllegalAccessException);
+  Expect.throws(() => m1.putIfAbsent('z', () => 499),
+                isIllegalAccessException);
+
+  Expect.equals(499, m2['a']);
+  Expect.equals(42, m2['b']);
+  Expect.equals(null, m2['c']);
+  Expect.listEquals(['a', 'b'], m2.getKeys());
+  Expect.listEquals([499, 42], m2.getValues());
+  Expect.isTrue(m2.containsKey('a'));
+  Expect.isTrue(m2.containsKey('b'));
+  Expect.isFalse(m2.containsKey('toString'));
+  Expect.isTrue(m2.containsValue(499));
+  Expect.isTrue(m2.containsValue(42));
+  Expect.isFalse(m2.containsValue(99));
+  Expect.isFalse(m2.containsValue(null));
+  seenKeys = [];
+  seenValues = [];
+  m2.forEach((key, value) {
+    seenKeys.add(key);
+    seenValues.add(value);
+  });
+  Expect.listEquals(['a', 'b'], seenKeys);
+  Expect.listEquals([499, 42], seenValues);
+  Expect.isFalse(m2.isEmpty());
+  Expect.equals(2, m2.length);
+  Expect.throws(() => m2.remove('a'), isIllegalAccessException);
+  Expect.throws(() => m2.remove('b'), isIllegalAccessException);
+  Expect.throws(() => m2.remove('c'), isIllegalAccessException);
+  Expect.throws(() => m2.clear(), isIllegalAccessException);
+  Expect.throws(() => m2['a'] = 499, isIllegalAccessException);
+  Expect.throws(() => m2['b'] = 42, isIllegalAccessException);
+  Expect.throws(() => m2['c'] = 499, isIllegalAccessException);
+  Expect.throws(() => m2.putIfAbsent('a', () => 499),
+                isIllegalAccessException);
+  Expect.throws(() => m2.putIfAbsent('z', () => 499),
+                isIllegalAccessException);
+  Expect.throws(() => m2['a'] = 499, isIllegalAccessException);
+
+  Expect.isTrue(m3['m1'] === m1);
+  Expect.isTrue(m3['m2'] === m2);
+
+  Expect.listEquals(['z', 'a', 'm'], m4.getKeys());
+  Expect.listEquals([9, 8, 7], m4.getValues());
+  seenKeys = [];
+  seenValues = [];
+  m4.forEach((key, value) {
+    seenKeys.add(key);
+    seenValues.add(value);
+  });
+  Expect.listEquals(['z', 'a', 'm'], seenKeys);
+  Expect.listEquals([9, 8, 7], seenValues);
+
+  Expect.equals(499, m5['']);
+  Expect.isTrue(m5.containsKey(''));
+  Expect.equals(1, m5.length);
+
+  Expect.isTrue(m1 === m6);
+
+  Expect.isTrue(m7.isEmpty());
+  Expect.equals(0, m7.length);
+  Expect.equals(null, m7['b']);
+  Expect.listEquals([], m7.getKeys());
+  Expect.listEquals([], m7.getValues());
+  Expect.isFalse(m7.containsKey('a'));
+  Expect.isFalse(m7.containsKey('toString'));
+  Expect.isFalse(m7.containsValue(499));
+  Expect.isFalse(m7.containsValue(null));
+  seenKeys = [];
+  seenValues = [];
+  m7.forEach((key, value) {
+    seenKeys.add(key);
+    seenValues.add(value);
+  });
+  Expect.listEquals([], seenKeys);
+  Expect.listEquals([], seenValues);
+  Expect.throws(() => m7.remove('a'), isIllegalAccessException);
+  Expect.throws(() => m7.remove('b'), isIllegalAccessException);
+  Expect.throws(() => m7.clear(), isIllegalAccessException);
+  Expect.throws(() => m7['b'] = 42, isIllegalAccessException);
+  Expect.throws(() => m7['a'] = 499, isIllegalAccessException);
+  Expect.throws(() => m7.putIfAbsent('a', () => 499),
+                isIllegalAccessException);
+  Expect.throws(() => m7.putIfAbsent('z', () => 499),
+                isIllegalAccessException);
+}