Parser: Delay internalizing strings and values.

src/preparser.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_PREPARSER_H
 #define V8_PREPARSER_H
 
 #include "src/func-name-inferrer.h"
 #include "src/hashmap.h"
 #include "src/scopes.h"
@@ skipping 131 matching lines @@
     typename Traits::Type::Scope* outer_scope_;
     typename Traits::Type::Scope* scope_;
   };
 
   class FunctionState BASE_EMBEDDED {
    public:
     FunctionState(
         FunctionState** function_state_stack,
         typename Traits::Type::Scope** scope_stack,
         typename Traits::Type::Scope* scope,
-        typename Traits::Type::Zone* zone = NULL);
+        typename Traits::Type::Zone* zone = NULL,
+        AstValueFactory* ast_value_factory = NULL);
     ~FunctionState();
 
     int NextMaterializedLiteralIndex() {
       return next_materialized_literal_index_++;
     }
     int materialized_literal_count() {
       return next_materialized_literal_index_ - JSFunction::kLiteralsPrefixSize;
     }
 
     int NextHandlerIndex() { return next_handler_index_++; }
@@ skipping 186 matching lines @@
 
   // Report syntax errors.
   void ReportMessage(const char* message, const char* arg = NULL,
                      bool is_reference_error = false) {
     Scanner::Location source_location = scanner()->location();
     Traits::ReportMessageAt(source_location, message, arg, is_reference_error);
   }
 
   void ReportMessageAt(Scanner::Location location, const char* message,
                        bool is_reference_error = false) {
-    Traits::ReportMessageAt(location, message, NULL, is_reference_error);
+    Traits::ReportMessageAt(location, message,
+                            reinterpret_cast<const char*>(NULL),
+                            is_reference_error);
   }
 
   void ReportUnexpectedToken(Token::Value token);
 
   // Recursive descent functions:
 
   // Parses an identifier that is valid for the current scope, in particular it
   // fails on strict mode future reserved keywords in a strict scope. If
   // allow_eval_or_arguments is kAllowEvalOrArguments, we allow "eval" or
   // "arguments" as identifier even in strict mode (this is needed in cases like
@@ skipping 366 matching lines @@
   void SetStrictMode(StrictMode strict_mode) { strict_mode_ = strict_mode; }
 
  private:
   ScopeType scope_type_;
   StrictMode strict_mode_;
 };
 
 
 class PreParserFactory {
  public:
-  explicit PreParserFactory(void* extra_param) {}
-  PreParserExpression NewLiteral(PreParserIdentifier identifier,
-                                 int pos) {
+  explicit PreParserFactory(void* extra_param1, void* extra_param2) {}
+  PreParserExpression NewStringLiteral(PreParserIdentifier identifier,
+                                       int pos) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewNumberLiteral(double number,
                                        int pos) {
     return PreParserExpression::Default();
   }
   PreParserExpression NewRegExpLiteral(PreParserIdentifier js_pattern,
                                        PreParserIdentifier js_flags,
                                        int literal_index,
                                        int pos) {
@@ skipping 231 matching lines @@
   }
 
   // Odd-ball literal creators.
   static PreParserExpression GetLiteralTheHole(int position,
                                                PreParserFactory* factory) {
     return PreParserExpression::Default();
   }
 
   // Producing data during the recursive descent.
   PreParserIdentifier GetSymbol(Scanner* scanner);
-  static PreParserIdentifier NextLiteralString(Scanner* scanner,
-                                               PretenureFlag tenured) {
+
+  static PreParserIdentifier GetNextSymbol(Scanner* scanner) {
     return PreParserIdentifier::Default();
   }
 
   static PreParserExpression ThisExpression(PreParserScope* scope,
                                             PreParserFactory* factory) {
     return PreParserExpression::This();
   }
 
   static PreParserExpression ExpressionFromLiteral(
       Token::Value token, int pos, Scanner* scanner,
@@ skipping 165 matching lines @@
   void ParseLazyFunctionLiteralBody(bool* ok);
 
   bool CheckInOrOf(bool accept_OF);
 };
 
 template<class Traits>
 ParserBase<Traits>::FunctionState::FunctionState(
     FunctionState** function_state_stack,
     typename Traits::Type::Scope** scope_stack,
     typename Traits::Type::Scope* scope,
-    typename Traits::Type::Zone* extra_param)
+    typename Traits::Type::Zone* extra_param,
+    AstValueFactory* ast_value_factory)
     : next_materialized_literal_index_(JSFunction::kLiteralsPrefixSize),
       next_handler_index_(0),
       expected_property_count_(0),
       is_generator_(false),
       generator_object_variable_(NULL),
       function_state_stack_(function_state_stack),
       outer_function_state_(*function_state_stack),
       scope_stack_(scope_stack),
       outer_scope_(*scope_stack),
       saved_ast_node_id_(0),
       extra_param_(extra_param),
-      factory_(extra_param) {
+      factory_(extra_param, ast_value_factory) {
   *scope_stack_ = scope;
   *function_state_stack = this;
   Traits::SetUpFunctionState(this, extra_param);
 }
 
 
 template<class Traits>
 ParserBase<Traits>::FunctionState::~FunctionState() {
   *scope_stack_ = outer_scope_;
   *function_state_stack_ = outer_function_state_;
@@ skipping 105 matching lines @@
   int pos = peek_position();
   if (!scanner()->ScanRegExpPattern(seen_equal)) {
     Next();
     ReportMessage("unterminated_regexp");
     *ok = false;
     return Traits::EmptyExpression();
   }
 
   int literal_index = function_state_->NextMaterializedLiteralIndex();
 
-  IdentifierT js_pattern = this->NextLiteralString(scanner(), TENURED);
+  IdentifierT js_pattern = this->GetNextSymbol(scanner());
   if (!scanner()->ScanRegExpFlags()) {
     Next();
     ReportMessage("invalid_regexp_flags");
     *ok = false;
     return Traits::EmptyExpression();
   }
-  IdentifierT js_flags = this->NextLiteralString(scanner(), TENURED);
+  IdentifierT js_flags = this->GetNextSymbol(scanner());
   Next();
   return factory()->NewRegExpLiteral(js_pattern, js_flags, literal_index, pos);
 }
 
 
 #define CHECK_OK  ok); \
   if (!*ok) return this->EmptyExpression(); \
   ((void)0
 #define DUMMY )  // to make indentation work
 #undef DUMMY
@@ skipping 224 matching lines @@
           }
 
           if (fni_ != NULL) {
             fni_->Infer();
             fni_->Leave();
           }
           continue;  // restart the while
         }
         // Failed to parse as get/set property, so it's just a normal property
         // (which might be called "get" or "set" or something else).
-        key = factory()->NewLiteral(id, next_pos);
+        key = factory()->NewStringLiteral(id, next_pos);
         break;
       }
       case Token::STRING: {
         Consume(Token::STRING);
         IdentifierT string = this->GetSymbol(scanner_);
         if (fni_ != NULL) this->PushLiteralName(fni_, string);
         uint32_t index;
         if (this->IsArrayIndex(string, &index)) {
           key = factory()->NewNumberLiteral(index, next_pos);
           break;
         }
-        key = factory()->NewLiteral(string, next_pos);
+        key = factory()->NewStringLiteral(string, next_pos);
         break;
       }
       case Token::NUMBER: {
         Consume(Token::NUMBER);
         key = this->ExpressionFromLiteral(Token::NUMBER, next_pos, scanner_,
                                           factory());
         break;
       }
       default:
         if (Token::IsKeyword(next)) {
           Consume(next);
           IdentifierT string = this->GetSymbol(scanner_);
-          key = factory()->NewLiteral(string, next_pos);
+          key = factory()->NewStringLiteral(string, next_pos);
         } else {
           Token::Value next = Next();
           ReportUnexpectedToken(next);
           *ok = false;
           return this->EmptyLiteral();
         }
     }
 
     // Validate the property
     checker.CheckProperty(next, kValueProperty, CHECK_OK);
@@ skipping 348 matching lines @@
         result = factory()->NewCall(result, args, pos);
         if (fni_ != NULL) fni_->RemoveLastFunction();
         break;
       }
 
       case Token::PERIOD: {
         Consume(Token::PERIOD);
         int pos = position();
         IdentifierT name = ParseIdentifierName(CHECK_OK);
         result = factory()->NewProperty(
-            result, factory()->NewLiteral(name, pos), pos);
+            result, factory()->NewStringLiteral(name, pos), pos);
         if (fni_ != NULL) this->PushLiteralName(fni_, name);
         break;
       }
 
       default:
         return result;
     }
   }
 }
 
@@ skipping 101 matching lines @@
           this->PushPropertyName(fni_, index);
         }
         Expect(Token::RBRACK, CHECK_OK);
         break;
       }
       case Token::PERIOD: {
         Consume(Token::PERIOD);
         int pos = position();
         IdentifierT name = ParseIdentifierName(CHECK_OK);
         expression = factory()->NewProperty(
-            expression, factory()->NewLiteral(name, pos), pos);
+            expression, factory()->NewStringLiteral(name, pos), pos);
         if (fni_ != NULL) {
           this->PushLiteralName(fni_, name);
         }
         break;
       }
       default:
         return expression;
     }
   }
   ASSERT(false);
@@ skipping 57 matching lines @@
       parser()->ReportMessage("accessor_get_set");
     }
     *ok = false;
   }
 }
 
 
 } }  // v8::internal
 
 #endif  // V8_PREPARSER_H