Dart2js option to dump info about compilation

tests/compiler/dart2js/dump_info_test.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.
+// Test that parameters keep their names in the output.
+
+import 'dart:async';
+import "package:expect/expect.dart";
+import "package:async_helper/async_helper.dart";
+import 'memory_compiler.dart';
+
+const String TEST_ONE = r"""
+library main;
+
+int a = 2;
+
+class c {
+  final int m;
+  c(this.m);
+}
+
+void f() {
+  () {} (); // TODO (sigurdm) empty closure, hack to avoid inlining
+  a = 2;
+}
+
+main() {
+  f();
+  new c(2);
+}
+""";
+
+main() {
+  MemoryCompiler compiler = compilerFor({'main.dart': TEST_ONE});
+  asyncTest(() => compiler.runCompiler(Uri.parse('memory:main.dart')).then((_) {
+    Map info = compiler.backend.collectDumpInfo();
+    print(info);
+    var mainlib = info["libraries"][0];
+    Expect.stringEquals(mainlib["name"], "main");
+    var contents = mainlib["contents"];
+    Expect.stringEquals(mainlib["name"], "main");
+    Expect.stringEquals(contents[0]["name"], "a");
+    Expect.stringEquals(contents[1]["name"], "c");
+    Expect.stringEquals(contents[2]["name"], "f");
+    Expect.stringEquals(contents[3]["name"], "main");
+    Expect.stringEquals(mainlib["kind"], "library");
+    Expect.stringEquals(contents[0]["kind"], "field");
+    Expect.stringEquals(contents[1]["kind"], "class");
+    Expect.stringEquals(contents[2]["kind"], "function");
+    Expect.stringEquals(contents[3]["kind"], "function");
+  }));
+;

[ahe, 2013/11/27 19:28:53]

?

[sigurdm, 2013/11/29 10:39:37]

Done.

+}