Preliminary code for block scopes and block contexts.

src/factory.h

 // Copyright 2011 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 149 matching lines @@
   Handle<Context> NewCatchContext(Handle<JSFunction> function,
                                   Handle<Context> previous,
                                   Handle<String> name,
                                   Handle<Object> thrown_object);
 
   // Create a 'with' context.
   Handle<Context> NewWithContext(Handle<JSFunction> function,
                                  Handle<Context> previous,
                                  Handle<JSObject> extension);
 
+  // Create a 'block' context.
+  Handle<Context> NewBlockContext(Handle<JSFunction> function,
+                                  Handle<Context> previous,
+                                  Handle<SerializedScopeInfo> scope_info);
+
   // Return the Symbol matching the passed in string.
   Handle<String> SymbolFromString(Handle<String> value);
 
   // Allocate a new struct.  The struct is pretenured (allocated directly in
   // the old generation).
   Handle<Struct> NewStruct(InstanceType type);
 
   Handle<AccessorInfo> NewAccessorInfo();
 
   Handle<Script> NewScript(Handle<String> source);
@@ skipping 90 matching lines @@
   Handle<JSFunction> BaseNewFunctionFromSharedFunctionInfo(
       Handle<SharedFunctionInfo> function_info,
       Handle<Map> function_map,
       PretenureFlag pretenure);
 
   Handle<JSFunction> NewFunctionFromSharedFunctionInfo(
       Handle<SharedFunctionInfo> function_info,
       Handle<Context> context,
       PretenureFlag pretenure = TENURED);
 
+  Handle<SerializedScopeInfo> NewSerializedScopeInfo(int length);
+
   Handle<Code> NewCode(const CodeDesc& desc,
                        Code::Flags flags,
                        Handle<Object> self_reference,
                        bool immovable = false);
 
   Handle<Code> CopyCode(Handle<Code> code);
 
   Handle<Code> CopyCode(Handle<Code> code, Vector<byte> reloc_info);
 
   Handle<Object> ToObject(Handle<Object> object);
@@ skipping 164 matching lines @@
   // Update the map cache in the global context with (keys, map)
   Handle<MapCache> AddToMapCache(Handle<Context> context,
                                  Handle<FixedArray> keys,
                                  Handle<Map> map);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FACTORY_H_