Internal libraries supported.

sdk/lib/_internal/compiler/implementation/elements/modelx.dart

 // Copyright (c) 2013, 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 elements.modelx;
 
 import 'dart:uri';
 
 import 'elements.dart';
 import '../../compiler.dart' as api;
@@ skipping 504 matching lines @@
             MessageKind.LIBRARY_NAME_MISMATCH.error([expectedName]),
             api.Diagnostic.WARNING);
       }
     }
   }
 
   bool get hasMembers => !localMembers.isEmpty;
 }
 
 class LibraryElementX extends ElementX implements LibraryElement {
-  final Uri uri;
+  final Uri canonicalUri;
   CompilationUnitElement entryCompilationUnit;
   Link<CompilationUnitElement> compilationUnits =
       const Link<CompilationUnitElement>();
   Link<LibraryTag> tags = const Link<LibraryTag>();
   LibraryName libraryTag;
   bool canUseNative = false;
   Link<Element> localMembers = const Link<Element>();
   final ScopeX localScope = new ScopeX();
 
   /**
@@ skipping 21 matching lines @@
   /**
    * Link for elements exported either through export declarations or through
    * declaration. This field should not be accessed directly but instead through
    * the [exports] getter.
    *
    * [LibraryDependencyHandler] sets this field through [setExports] when the
    * library is loaded.
    */
   Link<Element> slotForExports;
 
-  LibraryElementX(Script script, [Uri uri, LibraryElement this.origin])
-    : this.uri = ((uri == null) ? script.uri : uri),
+  LibraryElementX(Script script, [Uri canonicalUri, LibraryElement this.origin])
+    : this.canonicalUri = ((canonicalUri == null) ? script.uri : canonicalUri),
       importScope = new Map<SourceString, Element>(),
       super(new SourceString(script.name), ElementKind.LIBRARY, null) {
     entryCompilationUnit = new CompilationUnitElementX(script, this);
     if (isPatch) {
       origin.patch = this;
     }
   }
 
   bool get isPatched => patch != null;
   bool get isPatch => origin != null;
@@ skipping 142 matching lines @@
   /**
    * 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.
    */
   String getLibraryOrScriptName() {
     if (libraryTag != null) {
       return libraryTag.name.toString();
     } else {
       // Use the file name as script name.
-      String path = uri.path;
+      String path = canonicalUri.path;
       return path.substring(path.lastIndexOf('/') + 1);
     }
   }
 
   Scope buildScope() => new LibraryScope(this);
 
-  bool get isPlatformLibrary => uri.scheme == "dart";
+  bool get isPlatformLibrary => canonicalUri.scheme == "dart";
+
+  bool get isInternalLibrary =>
+      isPlatformLibrary && canonicalUri.path.startsWith('_');
 
   String toString() {
     if (origin != null) {
       return 'patch library(${getLibraryOrScriptName()})';
     } else if (patch != null) {
       return 'origin library(${getLibraryOrScriptName()})';
     } else {
       return 'library(${getLibraryOrScriptName()})';
     }
   }
@@ skipping 1201 matching lines @@
 
   MetadataAnnotation ensureResolved(Compiler compiler) {
     if (resolutionState == STATE_NOT_STARTED) {
       compiler.resolver.resolveMetadataAnnotation(this);
     }
     return this;
   }
 
   String toString() => 'MetadataAnnotation($value, $resolutionState)';
 }