Evaluation of expression in context of library top-level

runtime/vm/debugger_api_impl.cc

Index: runtime/vm/debugger_api_impl.cc
===================================================================
--- runtime/vm/debugger_api_impl.cc	(revision 26897)
+++ runtime/vm/debugger_api_impl.cc	(working copy)
@@ -514,6 +514,8 @@
     return Api::NewHandle(isolate, Instance::Cast(target).Evaluate(expr));
   } else if (target.IsClass()) {
     return Api::NewHandle(isolate, Class::Cast(target).Evaluate(expr));
+  } else if (target.IsLibrary()) {
+    return Api::NewHandle(isolate, Library::Cast(target).Evaluate(expr));
   }
   return Api::NewError("%s: unsupported target type", CURRENT_FUNC);
 }
@@ -782,6 +784,19 @@
 }
 
 
+DART_EXPORT Dart_Handle Dart_GetLibraryFromId(intptr_t library_id) {
+  Isolate* isolate = Isolate::Current();
+  ASSERT(isolate != NULL);
+  DARTSCOPE(isolate);
+  const Library& lib = Library::Handle(Library::GetLibrary(library_id));
+  if (lib.IsNull()) {
+    return Api::NewError("%s: %" Pd " is not a valid library id",
+                         CURRENT_FUNC, library_id);
+  }
+  return Api::NewHandle(isolate, lib.raw());
+}
+
+
 DART_EXPORT Dart_Handle Dart_GetLibraryImports(intptr_t library_id) {
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);