Optimizing nested, constant object literals (like JSON objects) by building o...

src/ast.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 117 matching lines @@
   return scope()->AllowsLazyCompilation();
 }
 
 
 ObjectLiteral::Property::Property(Literal* key, Expression* value) {
   key_ = key;
   value_ = value;
   Object* k = *key->handle();
   if (k->IsSymbol() && Heap::Proto_symbol()->Equals(String::cast(k))) {
     kind_ = PROTOTYPE;
+  } else if (value_->AsObjectLiteral() != NULL) {
+    kind_ = OBJECT_LITERAL;
   } else {
     kind_ = value_->AsLiteral() == NULL ? COMPUTED : CONSTANT;
   }
 }
 
 
 ObjectLiteral::Property::Property(bool is_getter, FunctionLiteral* value) {
   key_ = new Literal(value->name());
   value_ = value;
   kind_ = is_getter ? GETTER : SETTER;
@@ skipping 329 matching lines @@
     if (kInfinity - max_match_ < node_max_match) {
       max_match_ = kInfinity;
     } else {
       max_match_ += node->max_match();
     }
   }
 }
 
 
 } }  // namespace v8::internal