Support placement new syntax for zone objects and start using it in the parser.

src/parser.h

 // Copyright 2010 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 262 matching lines @@
   void AddAtom(RegExpTree* tree);
   void AddAssertion(RegExpTree* tree);
   void NewAlternative();  // '|'
   void AddQuantifierToAtom(int min, int max, RegExpQuantifier::Type type);
   RegExpTree* ToRegExp();
 
  private:
   void FlushCharacters();
   void FlushText();
   void FlushTerms();
+  Zone* zone() { return zone_; }
+
+  Zone* zone_;
   bool pending_empty_;
   ZoneList<uc16>* characters_;
   BufferedZoneList<RegExpTree, 2> terms_;
   BufferedZoneList<RegExpTree, 2> text_;
   BufferedZoneList<RegExpTree, 2> alternatives_;
 #ifdef DEBUG
   enum {ADD_NONE, ADD_CHAR, ADD_TERM, ADD_ASSERT, ADD_ATOM} last_added_;
 #define LAST(x) last_added_ = x;
 #else
 #define LAST(x)
@@ skipping 89 matching lines @@
     RegExpParserState* previous_state_;
     // Builder for the stored disjunction.
     RegExpBuilder* builder_;
     // Stored disjunction type (capture, look-ahead or grouping), if any.
     SubexpressionType group_type_;
     // Stored disjunction's capture index (if any).
     int disjunction_capture_index_;
   };
 
   Isolate* isolate() { return isolate_; }
+  Zone* zone() { return isolate_->zone(); }
 
   uc32 current() { return current_; }
   bool has_more() { return has_more_; }
   bool has_next() { return next_pos_ < in()->length(); }
   uc32 Next();
   FlatStringReader* in() { return in_; }
   void ScanForCaptures();
 
   Isolate* isolate_;
   Handle<String>* error_;
@@ skipping 44 matching lines @@
   static const int kMaxNumFunctionParameters = 32766;
   FunctionLiteral* ParseLazy(CompilationInfo* info,
                              UC16CharacterStream* source,
                              ZoneScope* zone_scope);
   enum Mode {
     PARSE_LAZILY,
     PARSE_EAGERLY
   };
 
   Isolate* isolate() { return isolate_; }
+  Zone* zone() { return isolate_->zone(); }
 
   // Called by ParseProgram after setting up the scanner.
   FunctionLiteral* DoParseProgram(Handle<String> source,
                                   bool in_global_context,
                                   StrictModeFlag strict_mode,
                                   ZoneScope* zone_scope);
 
   // Report syntax error
   void ReportUnexpectedToken(Token::Value token);
   void ReportInvalidPreparseData(Handle<String> name, bool* ok);
@@ skipping 343 matching lines @@
   // Converts the currently parsed literal to a JavaScript String.
   Handle<String> GetString();
 
   Isolate* isolate_;
   JsonScanner scanner_;
   bool stack_overflow_;
 };
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_