Refactor Library/CompilationUnit and how we define local Scope.

lib/dartdoc/mirrors/dart2js_mirror.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.
 
 #library('mirrors.dart2js');
 
 #import('../../compiler/compiler.dart', prefix: 'diagnostics');
 #import('../../compiler/implementation/elements/elements.dart');
 #import('../../compiler/implementation/apiimpl.dart', prefix: 'api');
 #import('../../compiler/implementation/scanner/scannerlib.dart');
@@ skipping 468 matching lines @@
   /**
    * Returns the library name (for libraries with a #library tag) or the script
    * file name (for scripts without a #library tag). The latter case is used to
    * provide a 'library name' for scripts, to use for instance in dartdoc.
    */
   String simpleName() {
     if (_library.libraryTag !== null) {
       return _library.libraryTag.argument.dartString.slowToString();
     } else {
       // Use the file name as script name.
-      String path = _library.script.uri.path;
+      String path = _library.uri.path;
       return path.substring(path.lastIndexOf('/') + 1);
     }
   }
 
   String qualifiedName() => simpleName();
 
   void _ensureTypes() {
     if (_types == null) {
       _types = <InterfaceMirror>{};
       _library.forEachExport((Element e) {
@@ skipping 175 matching lines @@
         var span = system.compiler.spanFromNode(node, script.uri);
         return new Dart2JsLocation(script, span);
       }
     }
     return super.location();
   }
 
   void _ensureMembers() {
     if (_members == null) {
       _members = <Dart2JsMemberMirror>{};
-      _class.constructors.forEach((_, e) {
+      _class.localMembers.forEach((e) {
         for (var member in _convertElementMemberToMemberMirrors(this, e)) {
           _members[member.canonicalName] = member;
         }
-      });
-      _class.localMembers.forEach((_, e) {
-        for (var member in _convertElementMemberToMemberMirrors(this, e)) {
-          _members[member.canonicalName] = member;
-        }
       });
     }
   }
 
   Map<Object, MemberMirror> declaredMembers() {
     _ensureMembers();
     return new ImmutableMapWrapper<Object, MemberMirror>(_members);
   }
 
   LibraryMirror library() {
@@ skipping 658 matching lines @@
     if (node !== null) {
       var span = system.compiler.spanFromNode(node, script.uri);
       return new Dart2JsLocation(script, span);
     } else {
       var span = system.compiler.spanFromElement(_variable);
       return new Dart2JsLocation(script, span);
     }
   }
 }