Implement support for specifying string interopolation style variable substitution in the import ...

bin/builtin.cc

 // 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.
 
 #include <stdio.h>
 
 #include "include/dart_api.h"
 
 #include "bin/builtin.h"
 #include "bin/dartutils.h"
@@ skipping 37 matching lines @@
 Dart_Handle Builtin::LoadLibrary(BuiltinLibraryId id) {
   Dart_Handle url;
   if (id == kBuiltinLibrary) {
     url = Dart_NewString(DartUtils::kBuiltinLibURL);
   } else {
     ASSERT(id == kIOLibrary);
     url = Dart_NewString(DartUtils::kIOLibURL);
   }
   Dart_Handle library = Dart_LookupLibrary(url);
   if (Dart_IsError(library)) {
-    library = Dart_LoadLibrary(url, Source(id));
+    Dart_Handle import_map = Dart_NewList(0);
+    library = Dart_LoadLibrary(url, Source(id), import_map);
     if (!Dart_IsError(library)) {
       SetupLibrary(library, id);
     }
   }
   DART_CHECK_VALID(library);
   return library;
 }
 
 
 void Builtin::ImportLibrary(Dart_Handle library, BuiltinLibraryId id) {
   Dart_Handle imported_library = LoadLibrary(id);
   // Import the library into current library.
   DART_CHECK_VALID(Dart_LibraryImportLibrary(library, imported_library));
 }