Various token issues fixed in the compiler

lib/compiler/implementation/elements/elements.dart

Index: lib/compiler/implementation/elements/elements.dart
diff --git a/lib/compiler/implementation/elements/elements.dart b/lib/compiler/implementation/elements/elements.dart
index 1878a37c3221e27c4bf750c76444dd147556fd00..bece73675567c7f4f055284411da0fa1bdeaf823 100644
--- a/lib/compiler/implementation/elements/elements.dart
+++ b/lib/compiler/implementation/elements/elements.dart
@@ -205,6 +205,8 @@ class Element implements Hashable {
   }
 
   toString() {
+    // TODO(johnniwinther): Test for nullness of name, or make non-nullness an
+    // invariant for all element types.
     if (!isTopLevel()) {
       String holderName = enclosingElement.name.slowToString();
       return '$kind($holderName#${name.slowToString()})';
@@ -359,6 +361,16 @@ class LibraryElement extends CompilationUnitElement {
   }
 
   bool hasLibraryName() => libraryTag !== null;
+
+  String getLibraryOrScriptName() {

[ahe, 2012/06/27 10:48:27]

What is this method for?

+    if (libraryTag !== null) {
+      return libraryTag.argument.dartString.slowToString();
+    } else {
+      // Use the file name as script name.
+      var path = script.uri.path;
+      return path.substring(path.lastIndexOf('/')+1);

[Lasse Reichstein Nielsen, 2012/06/27 09:22:16]

Spaces around '+'.
What is the script name used for? Since file names don't need to be unique, the
script name won't be either.

+    }
+  }
 }
 
 class PrefixElement extends Element {