Scanner for UTF-8 byte arrays

sdk/lib/_internal/compiler/implementation/patch_parser.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.
 
 /**
  * This library contains the infrastructure to parse and integrate patch files.
  *
  * Three types of elements can be patched: [LibraryElement], [ClassElement],
  * [FunctionElement]. Patches are introduced in patch libraries which are loaded
  * together with the corresponding origin library. Which libraries that are
@@ skipping 144 matching lines @@
       });
     });
   }
 
   void scanLibraryElements(
         CompilationUnitElement compilationUnit,
         LinkBuilder<tree.LibraryTag> imports) {
     measure(() {
       // TODO(lrn): Possibly recursively handle 'part' directives in patch.
       leg.Script script = compilationUnit.script;
-      Token tokens = new StringScanner(script.text).tokenize();
+      Token tokens = new Scanner(script.file).tokenize();
       Function idGenerator = compiler.getNextFreeClassId;
       PatchListener patchListener =
           new PatchElementListener(compiler,
                                    compilationUnit,
                                    idGenerator,
                                    imports);
       new PatchParser(patchListener).parseUnit(tokens);
     });
   }
 
@@ skipping 373 matching lines @@
 
 // TODO(johnniwinther): Add unittest when patch is (real) metadata.
 bool isPatchElement(Element element) {
   // TODO(lrn): More checks needed if we introduce metadata for real.
   // In that case, it must have the identifier "native" as metadata.
   for (Link link = element.metadata; !link.isEmpty; link = link.tail) {
     if (link.head is PatchMetadataAnnotation) return true;
   }
   return false;
 }