Add a draft of traversing visitor which will analyse function.

lib/compiler/implementation/leg.dart

Index: lib/compiler/implementation/leg.dart
diff --git a/lib/compiler/implementation/leg.dart b/lib/compiler/implementation/leg.dart
index 1a1a978939b53c1650a8010275a246edc43b4418..e456e25e4f0574257d32aeda7a3b7a7dd38d3a96 100644
--- a/lib/compiler/implementation/leg.dart
+++ b/lib/compiler/implementation/leg.dart
@@ -20,6 +20,7 @@
 
 #source('compile_time_constants.dart');
 #source('compiler.dart');
+#source('dart/backend.dart');

[ahe, 2012/06/04 08:05:49]

Sorry, I guess I should have been much clearer.

I think the dart backend should be in its own library. Also, I think we
shouldn't use the name "dart" for this backend. This word is too ambiguous in
this context.

I would go with dart_backend and also use that as a library prefix.

[Anton Muhin, 2012/06/04 09:34:23]

Done.  For now I don't import dart_backend w/ a prefix to follow ssa lead.

On 2012/06/04 08:05:49, ahe wrote:

 #source('diagnostic_listener.dart');
 #source('emitter.dart');
 #source('enqueue.dart');