Add support for initialization block assignments in the toplevel code...

src/parser.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 1321 matching lines @@
   static Assignment* AsAssignment(Statement* stat) {
     if (stat == NULL) return NULL;
     ExpressionStatement* exp_stat = stat->AsExpressionStatement();
     if (exp_stat == NULL) return NULL;
     return exp_stat->expression()->AsAssignment();
   }
 };
 
 
 // An InitializationBlockFinder finds and marks sequences of statements of the
-// form x.y.z.a = ...; x.y.z.b = ...; etc.
+// form expr.a = ...; expr.b = ...; etc.
 class InitializationBlockFinder : public ParserFinder {
  public:
   InitializationBlockFinder()
     : first_in_block_(NULL), last_in_block_(NULL), block_size_(0) {}
 
   ~InitializationBlockFinder() {
     if (InBlock()) EndBlock();
   }
 
   void Update(Statement* stat) {
     Assignment* assignment = AsAssignment(stat);
     if (InBlock()) {
       if (BlockContinues(assignment)) {
         UpdateBlock(assignment);
       } else {
         EndBlock();
       }
     }
     if (!InBlock() && (assignment != NULL) &&
         (assignment->op() == Token::ASSIGN)) {
       StartBlock(assignment);
     }
   }
 
  private:
   // Returns true if the expressions appear to denote the same object.
   // In the context of initialization blocks, we only consider expressions
-  // of the form 'x.y.z'.
+  // of the form 'expr.x' or expr["x"].
   static bool SameObject(Expression* e1, Expression* e2) {
     VariableProxy* v1 = e1->AsVariableProxy();
     VariableProxy* v2 = e2->AsVariableProxy();
     if (v1 != NULL && v2 != NULL) {
       return v1->name()->Equals(*v2->name());
     }
     Property* p1 = e1->AsProperty();
     Property* p2 = e2->AsProperty();
     if ((p1 == NULL) || (p2 == NULL)) return false;
     Literal* key1 = p1->key()->AsLiteral();
@@ skipping 3430 matching lines @@
                        start_position,
                        is_expression);
   return result;
 }
 
 
 #undef NEW
 
 
 } }  // namespace v8::internal