Refactor code for determining line position in a source file....

src/bootstrapper.cc

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 996 matching lines @@
             Factory::LookupAsciiSymbol("column_offset"),
             proxy_column_offset,
             common_attributes);
     Handle<Proxy> proxy_type = Factory::NewProxy(&Accessors::ScriptType);
     script_descriptors =
         Factory::CopyAppendProxyDescriptor(
             script_descriptors,
             Factory::LookupAsciiSymbol("type"),
             proxy_type,
             common_attributes);
+    Handle<Proxy> proxy_line_ends =
+        Factory::NewProxy(&Accessors::ScriptLineEnds);
+    script_descriptors =
+        Factory::CopyAppendProxyDescriptor(
+            script_descriptors,
+            Factory::LookupAsciiSymbol("line_ends"),
+            proxy_line_ends,
+            common_attributes);
 
     Handle<Map> script_map = Handle<Map>(script_fun->initial_map());
     script_map->set_instance_descriptors(*script_descriptors);
 
     // Allocate the empty script.
     Handle<Script> script = Factory::NewScript(Factory::empty_string());
     global_context()->set_empty_script(*script);
   }
 
   if (FLAG_natives_file == NULL) {
@@ skipping 475 matching lines @@
 }
 
 
 // Restore statics that are thread local.
 char* Genesis::RestoreState(char* from) {
   current_ = *reinterpret_cast<Genesis**>(from);
   return from + sizeof(current_);
 }
 
 } }  // namespace v8::internal