WIP: Parser: delay string internalization.

src/preparser.h

Index: src/preparser.h
diff --git a/src/preparser.h b/src/preparser.h
index 9dee863d591191a40de0a78d7d191347f9bc3966..6ccaca23589d11114ec053a3b2f5dcde269c5c64 100644
--- a/src/preparser.h
+++ b/src/preparser.h
@@ -149,7 +149,8 @@ class ParserBase : public Traits {
         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* extra_param = NULL,
+        AstStringTable* string_table = NULL);
     ~FunctionState();
 
     int NextMaterializedLiteralIndex() {
@@ -356,7 +357,9 @@ class ParserBase : public Traits {
 
   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);
@@ -743,7 +746,7 @@ class PreParserScope {
 
 class PreParserFactory {
  public:
-  explicit PreParserFactory(void* extra_param) {}
+  explicit PreParserFactory(void* extra_param1, void* extra_param2) {}
   PreParserExpression NewLiteral(PreParserIdentifier identifier,
                                  int pos) {
     return PreParserExpression::Default();
@@ -997,8 +1000,8 @@ class PreParserTraits {
 
   // 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();
   }
 
@@ -1184,7 +1187,8 @@ 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,
+    AstStringTable* string_table)
     : next_materialized_literal_index_(JSFunction::kLiteralsPrefixSize),
       next_handler_index_(0),
       expected_property_count_(0),
@@ -1196,7 +1200,7 @@ ParserBase<Traits>::FunctionState::FunctionState(
       outer_scope_(*scope_stack),
       saved_ast_node_id_(0),
       extra_param_(extra_param),
-      factory_(extra_param) {
+      factory_(extra_param, string_table) {
   *scope_stack_ = scope;
   *function_state_stack = this;
   Traits::SetUpFunctionState(this, extra_param);
@@ -1323,14 +1327,14 @@ typename ParserBase<Traits>::ExpressionT ParserBase<Traits>::ParseRegExpLiteral(
 
   int literal_index = function_state_->NextMaterializedLiteralIndex();
 
-  IdentifierT js_pattern = this->NextLiteralString(scanner(), TENURED);
+  IdentifierT js_pattern = this->GetNextSymbol(scanner());
   if (!scanner()->ScanRegExpFlags()) {
     Next();
     ReportMessageAt(scanner()->location(), "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);
 }