Move common identifiers, names and selectors to a separate library.

pkg/compiler/lib/src/common/names.dart

Index: pkg/compiler/lib/src/common/names.dart
diff --git a/pkg/compiler/lib/src/common/names.dart b/pkg/compiler/lib/src/common/names.dart
new file mode 100644
index 0000000000000000000000000000000000000000..b2e99a738816224c1ac0d8faa9b7ba7f1aaf740a
--- /dev/null
+++ b/pkg/compiler/lib/src/common/names.dart
@@ -0,0 +1,81 @@
+// 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.
+
+/// Library containing identifier, names, and selectors commonly used through
+/// the compiler.
+library dart2js.common.names;
+
+import '../elements/elements.dart' show
+    Name,
+    PublicName;
+import '../universe/universe.dart' show
+    Selector;
+
+/// [String]s commonly used.
+class Identifiers {
+  /// The name of the call operator.
+  static const String call = 'call';
+
+  /// The name of the from environment constructors on 'int', 'bool' and
+  /// 'String'.
+  static const String fromEnvironment = 'fromEnvironment';
+
+  /// The name of the main method.
+  static const String main = 'main';
+
+  /// The name of the no such method handler on 'Object'.
+  static const String noSuchMethod_ = 'noSuchMethod';
+
+  /// The name of the runtime type property on 'Object'.
+  static const String runtimeType_ = 'runtimeType';
+}
+
+/// [Name]s commonly used.
+class Names {
+  /// The name of the call operator.
+  static const Name call = const PublicName(Identifiers.call);
+
+  /// The name of the current element property used on iterators in for-each
+  /// loops.
+  static const Name current = const PublicName('current');
+
+  /// The name of the dynamic type.
+  static const Name dynamic_ = const PublicName('dynamic');
+
+  /// The name of the iterator property used in for-each loops.
+  static const Name iterator = const PublicName('iterator');
+
+  /// The name of the move next method used on iterators in for-each loops.
+  static const Name moveNext = const PublicName('moveNext');
+
+  /// The name of the no such method handler on 'Object'.
+  static const Name noSuchMethod_ = const PublicName(Identifiers.noSuchMethod_);
+
+  /// The name of the to-string method on 'Object'.
+  static const Name toString_ = const PublicName('toString');
+}
+
+/// [Selector]s commonly used.
+class Selectors {
+  /// The selector for calling the cancel method on 'StreamIterator'.
+  static final Selector cancel =
+      new Selector.call(const PublicName('cancel'), 0);
+
+  /// The selector for getting the current element property used in for-each
+  /// loops.
+  static final Selector current = new Selector.getter(Names.current);
+
+  /// The selector for getting the iterator property used in for-each loops.
+  static final Selector iterator = new Selector.getter(Names.iterator);
+
+  /// The selector for calling the move next method used in for-each loops.
+  static final Selector moveNext = new Selector.call(Names.moveNext, 0);
+
+  /// The selector for calling the no such method handler on 'Object'.
+  static final Selector noSuchMethod_ =
+      new Selector.call(Names.noSuchMethod_, 1);
+
+  /// The selector for calling the to-string method on 'Object'.
+  static final Selector toString_ = new Selector.call(Names.toString_, 0);
+}