Support serialization of the compiler backbone.

pkg/compiler/lib/src/elements/elements.dart

Index: pkg/compiler/lib/src/elements/elements.dart
diff --git a/pkg/compiler/lib/src/elements/elements.dart b/pkg/compiler/lib/src/elements/elements.dart
index 22a0933d834218ba2a65a81db8f4e6ec875a5219..aafc5121f3051566f53194ac4f7a22b31368a9c6 100644
--- a/pkg/compiler/lib/src/elements/elements.dart
+++ b/pkg/compiler/lib/src/elements/elements.dart
@@ -395,6 +395,7 @@ abstract class Element implements Entity {
   Element get origin;
 
   bool get isSynthesized;
+  //bool get isResolved;

[floitsch, 2015/06/26 20:54:04]

remove.

[Johnni Winther, 2015/07/03 12:13:44]

Done.

   bool get isMixinApplication;
 
   bool get hasFixedBackendName;
@@ -836,10 +837,8 @@ abstract class CompilationUnitElement extends Element {
   get enclosingElement;
 
   Script get script;
-  PartOf get partTag;
 
   void forEachLocalMember(f(Element element));
-  bool get hasMembers;
 
   int compareTo(CompilationUnitElement other);
 }
@@ -902,6 +901,15 @@ abstract class LibraryElement extends Element
 
   bool hasLibraryName();
   String getLibraryName();
+
+  /**
+   * Returns the library name (as defined by the library tag) or for script
+   * (which have no library tag) the script file name. The latter case is used
+   * to private 'library name' for scripts to use for instance in dartdoc.

[floitsch, 2015/06/26 20:54:04]

sentence isn't English.

[Johnni Winther, 2015/07/03 12:13:44]

Done.

+   *
+   * Note: the returned filename will still be escaped ("a%20b.dart" instead of

[floitsch, 2015/06/26 20:54:04]

is still escaped.

[Johnni Winther, 2015/07/03 12:13:44]

Done.

+   * "a b.dart").
+   */
   String getLibraryOrScriptName();
 
   int compareTo(LibraryElement other);
@@ -1490,6 +1498,9 @@ abstract class TypeVariableElement extends Element
   /// The class or typedef on which this type variable is defined.
   TypeDeclarationElement get typeDeclaration;
 
+  /// The index of this type variable within its type declaraiton.
+  int get index;
+
   /// The [type] defined by the type variable.
   TypeVariableType get type;