Hide the URIs in minified mode.

tests/compiler/dart2js/uri_retention_test.dart

+// Copyright (c) 2013, 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 dart2js.test.uri_retention_test;
+
+import 'dart:async';
+
+import 'package:expect/expect.dart';
+import "package:async_helper/async_helper.dart";
+
+import 'memory_compiler.dart' show
+    compilerFor;
+
+Future<String> compileSources(sources, {bool minify}) {
+  var compiler = compilerFor(sources, options: minify ? ['--minify'] : []);
+  return compiler.runCompiler(Uri.parse('memory:main.dart')).then((_) {
+    return compiler.assembledCode;
+  });
+}
+
+Future test(sources, { bool libName, bool fileName }) {
+  return compileSources(sources, minify: false).then((output) {
+    // Unminified the sources should always contain the library name and the
+    // file name.
+    Expect.isTrue(output.contains("main_lib"));
+    Expect.isTrue(output.contains("main.dart"));
+  }).then((_) {
+    compileSources(sources, minify: true).then((output) {
+      Expect.equals(libName, output.contains("main_lib"));
+      Expect.equals(fileName, output.contains("main.dart"));
+    });
+  });
+}
+
+void main() {
+  asyncTest(() {
+    return new Future.value()
+      .then((_) => test(MEMORY_SOURCE_FILES1, libName: false, fileName: false))
+      .then((_) => test(MEMORY_SOURCE_FILES2, libName: true, fileName: false))
+      .then((_) => test(MEMORY_SOURCE_FILES3, libName: true, fileName: true));
+  });
+}
+
+const MEMORY_SOURCE_FILES1 = const <String, String> {
+  'main.dart': """
+library main_lib;
+
+class A {
+  final uri = "foo";
+}
+
+main() {
+  print(Uri.base);
+  print(new A().uri);
+}
+""",
+};
+
+
+// Requires the library name, but not the URIs.
+const MEMORY_SOURCE_FILES2 = const <String, String> {
+  'main.dart': """
+library main_lib;
+
+@MirrorsUsed(targets: 'main_lib')
+import 'dart:mirrors';
+import 'file2.dart';
+
+class A {
+}
+
+main() {
+  print(Uri.base);
+  // Unfortunately we can't use new B().uri yet, because that would require
+  // some type-feedback to know that the '.uri' is not the one from the library.
+  print(new B());
+  print(reflectClass(A).declarations.length);
+}
+""",
+    'file2.dart': """
+library other_lib;
+
+class B {
+  final uri = "xyz";
+}
+""",
+};
+
+// Requires the uri (and will contain the library-name, too).
+const MEMORY_SOURCE_FILES3 = const <String, String> {
+  'main.dart': """
+library main_lib;
+
+@MirrorsUsed(targets: 'main_lib')
+import 'dart:mirrors';
+
+main() {
+  print(currentMirrorSystem().findLibrary(#main_lib).uri);
+}
+""",
+};