Introduce ParserBase for common code between parser and pre-parser.

src/parser.h

 // Copyright 2012 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 407 matching lines @@
   bool is_scanned_for_captures_;
   bool failed_;
 };
 
 // ----------------------------------------------------------------------------
 // JAVASCRIPT PARSING
 
 // Forward declaration.
 class SingletonLogger;
 
-class Parser BASE_EMBEDDED {
+class Parser : public ParserBase {
  public:
   explicit Parser(CompilationInfo* info);
   ~Parser() {
     delete reusable_preparser_;
     reusable_preparser_ = NULL;
   }
 
-  bool allow_natives_syntax() const { return allow_natives_syntax_; }
-  bool allow_lazy() const { return allow_lazy_; }
-  bool allow_modules() { return scanner().HarmonyModules(); }
-  bool allow_harmony_scoping() { return scanner().HarmonyScoping(); }
-  bool allow_generators() const { return allow_generators_; }
-  bool allow_for_of() const { return allow_for_of_; }
-  bool allow_harmony_numeric_literals() {
-    return scanner().HarmonyNumericLiterals();
-  }
-
-  void set_allow_natives_syntax(bool allow) { allow_natives_syntax_ = allow; }
-  void set_allow_lazy(bool allow) { allow_lazy_ = allow; }
-  void set_allow_modules(bool allow) { scanner().SetHarmonyModules(allow); }
-  void set_allow_harmony_scoping(bool allow) {
-    scanner().SetHarmonyScoping(allow);
-  }
-  void set_allow_generators(bool allow) { allow_generators_ = allow; }
-  void set_allow_for_of(bool allow) { allow_for_of_ = allow; }
-  void set_allow_harmony_numeric_literals(bool allow) {
-    scanner().SetHarmonyNumericLiterals(allow);
-  }
-
   // Parses the source code represented by the compilation info and sets its
   // function literal.  Returns false (and deallocates any allocated AST
   // nodes) if parsing failed.
   static bool Parse(CompilationInfo* info) { return Parser(info).Parse(); }
   bool Parse();
 
   void ReportMessageAt(Scanner::Location loc,
                        const char* message,
                        Vector<const char*> args = Vector<const char*>::empty());
   void ReportMessageAt(Scanner::Location loc,
@@ skipping 237 matching lines @@
                                         bool name_is_reserved,
                                         bool is_generator,
                                         int function_token_position,
                                         FunctionLiteral::FunctionType type,
                                         bool* ok);
 
 
   // Magical syntax support.
   Expression* ParseV8Intrinsic(bool* ok);
 
-  INLINE(Token::Value peek()) {
-    if (stack_overflow_) return Token::ILLEGAL;
-    return scanner().peek();
-  }
-
-  INLINE(Token::Value Next()) {
-    // BUG 1215673: Find a thread safe way to set a stack limit in
-    // pre-parse mode. Otherwise, we cannot safely pre-parse from other
-    // threads.
-    if (stack_overflow_) {
-      return Token::ILLEGAL;
-    }
-    if (StackLimitCheck(isolate()).HasOverflowed()) {
-      // Any further calls to Next or peek will return the illegal token.
-      // The current call must return the next token, which might already
-      // have been peek'ed.
-      stack_overflow_ = true;
-    }
-    return scanner().Next();
-  }
-
   bool is_generator() const { return current_function_state_->is_generator(); }
 
   bool CheckInOrOf(bool accept_OF, ForEachStatement::VisitMode* visit_mode);
 
-  bool peek_any_identifier();
-
-  INLINE(void Consume(Token::Value token));
-  void Expect(Token::Value token, bool* ok);
-  bool Check(Token::Value token);
-  void ExpectSemicolon(bool* ok);
   bool CheckContextualKeyword(Vector<const char> keyword);
   void ExpectContextualKeyword(Vector<const char> keyword, bool* ok);
 
   Handle<String> LiteralString(PretenureFlag tenured) {
     if (scanner().is_literal_ascii()) {
       return isolate_->factory()->NewStringFromAscii(
           scanner().literal_ascii_string(), tenured);
     } else {
       return isolate_->factory()->NewStringFromTwoByte(
             scanner().literal_utf16_string(), tenured);
@@ skipping 102 matching lines @@
   PreParser* reusable_preparser_;
   Scope* top_scope_;
   Scope* original_scope_;  // for ES5 function declarations in sloppy eval
   FunctionState* current_function_state_;
   Target* target_stack_;  // for break, continue statements
   v8::Extension* extension_;
   ScriptDataImpl* pre_parse_data_;
   FuncNameInferrer* fni_;
 
   Mode mode_;
-  bool allow_natives_syntax_;
-  bool allow_lazy_;
-  bool allow_generators_;
-  bool allow_for_of_;
-  bool stack_overflow_;
   // If true, the next (and immediately following) function literal is
   // preceded by a parenthesis.
   // Heuristically that means that the function will be called immediately,
   // so never lazily compile it.
   bool parenthesized_function_;
 
   Zone* zone_;
   CompilationInfo* info_;
   friend class BlockState;
   friend class FunctionState;
@@ skipping 25 matching lines @@
  private:
   static const int kLiteralTypeSlot = 0;
   static const int kElementsSlot = 1;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_