Save the native name on the function instead of finding it in the token stream for lazily-linked na…

runtime/vm/raw_object_snapshot.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 "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/snapshot.h"
 #include "vm/stub_code.h"
 #include "vm/symbols.h"
@@ skipping 966 matching lines @@
   Script& script = Script::ZoneHandle(reader->zone(), NEW_OBJECT(Script));
   reader->AddBackRef(object_id, &script, kIsDeserialized);
 
   script.StoreNonPointer(&script.raw_ptr()->line_offset_,
                          reader->Read<int32_t>());
   script.StoreNonPointer(&script.raw_ptr()->col_offset_,
                          reader->Read<int32_t>());
   script.StoreNonPointer(&script.raw_ptr()->kind_,
                          reader->Read<int8_t>());
 
+  *reader->StringHandle() ^= String::null();
+  script.set_source(*reader->StringHandle());
+  *reader->StreamHandle() ^= TokenStream::null();
+  script.set_tokens(*reader->StreamHandle());
+
   // Set all the object fields.
   // TODO(5411462): Need to assert No GC can happen here, even though
   // allocations may happen.
-  intptr_t num_flds = (script.raw()->to_snapshot() - script.raw()->from());
+  RawObject** toobj = reader->snapshot_code()
+      ? script.raw()->to_precompiled_snapshot()
+      : script.raw()->to_snapshot();
+  intptr_t num_flds = (toobj - script.raw()->from());
   for (intptr_t i = 0; i <= num_flds; i++) {
     (*reader->PassiveObjectHandle()) = reader->ReadObjectImpl(kAsReference);
     script.StorePointer((script.raw()->from() + i),
                         reader->PassiveObjectHandle()->raw());
   }
-  // Script wasn't allocated with nulls?
-  *reader->StringHandle() ^= String::null();
-  script.set_source(*reader->StringHandle());
 
   return script.raw();
 }
 
 
 void RawScript::WriteTo(SnapshotWriter* writer,
                         intptr_t object_id,
                         Snapshot::Kind kind,
                         bool as_reference) {
   ASSERT(writer != NULL);
   ASSERT(tokens_ != TokenStream::null());
   ASSERT((kind == Snapshot::kScript) || (kind == Snapshot::kFull));
 
   // Write out the serialization header value for this object.
   writer->WriteInlinedObjectHeader(object_id);
 
   // Write out the class and tags information.
   writer->WriteVMIsolateObject(kScriptCid);
   writer->WriteTags(writer->GetObjectTags(this));
 
   // Write out all the non object fields.
   writer->Write<int32_t>(ptr()->line_offset_);
   writer->Write<int32_t>(ptr()->col_offset_);
   writer->Write<int8_t>(ptr()->kind_);
 
   // Write out all the object pointer fields.
   SnapshotWriterVisitor visitor(writer, kAsReference);
-  visitor.VisitPointers(from(), to_snapshot());
+  RawObject** toobj = writer->snapshot_code() ? to_precompiled_snapshot()
+                                              : to_snapshot();
+  visitor.VisitPointers(from(), toobj);
 }
 
 
 RawLibrary* Library::ReadFrom(SnapshotReader* reader,
                               intptr_t object_id,
                               intptr_t tags,
                               Snapshot::Kind kind,
                               bool as_reference) {
   ASSERT(reader != NULL);
   ASSERT(kind != Snapshot::kMessage);
@@ skipping 2437 matching lines @@
     // We do not allow objects with native fields in an isolate message.
     writer->SetWriteException(Exceptions::kArgument,
                               "Illegal argument in isolate message"
                               " : (object is a UserTag)");
   } else {
     UNREACHABLE();
   }
 }
 
 }  // namespace dart