Sets the native name of static native methods by using the @JSName with the @Native tag of the encl…

tests/compiler/dart2js_native/static_methods_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.
+
+// Accessing static native methods names:
+//   plain declaration ->  use @Native tag as 'scope' for declared name.
+//   identifier @JSName -> use @Native tag as 'scope' for @JSName.
+//   other @JSName -> use @JSName as an expression.
+
+import "package:expect/expect.dart";
+import 'dart:_js_helper' show Native, JSName, convertDartClosureToJS;
+
+
+typedef int Callback(String s);
+
+@Native("CC")  // Tag can be different to class name.
+class AA {
+  // This name is not an identifier, so completely defines how to access method.
+  @JSName('CC.foo')
+  static int foo(String s) native;
+
+  // This name is not an identifier, so completely defines how to access method.
+  @JSName('CC.bar')
+  static int bar(Callback c) native;
+  static int baz(Callback c) { return bar(c); }
+
+  // Compiler should automatically use the tag and the declared name, i.e. call
+  // `CC.lepton`.
+  static int lepton(Callback c) native;
+  static int electron(c) => lepton(c);
+
+  // Compiler should automatically use the tag and JSName, i.e. call
+  // `CC.baryon`.
+  @JSName('baryon')
+  static int _baryon(Callback c) native;
+  static int proton(c) => _baryon(c);
+}
+
+void setup() native r"""
+// This code is all inside 'setup' and so not accessible from the global scope.
+
+function CC(){}
+
+CC.foo = function(s) { return s.length; }
+CC.bar = function(f) { return f("Bye"); }
+CC.lepton = function(f) { return f("Lepton"); }
+CC.baryon = function(f) { return f("three quarks"); }
+
+self.CC = CC;
+""";
+
+main() {
+  setup();
+
+  // TODO(sra): Investigate why this line is necessary to get a correctly
+  // compiled convertDartClosureToJS.  Without this line, the compiler crashes.
+  convertDartClosureToJS(main, 1);
+
+  Expect.equals(5, AA.foo("Hello"));
+
+  Expect.equals(3, AA.bar((s) => s.length));
+  Expect.equals(3, AA.baz((s) => s.length));
+
+  Expect.equals(6, AA.lepton((s) => s.length));
+  Expect.equals(6, AA.electron((s) => s.length));
+
+  Expect.equals(12, AA._baryon((s) => s.length));
+  Expect.equals(12, AA.proton((s) => s.length));
+  Expect.throws(() => AA.baryon((s) => s.length));  // Not defined on AA.
+}