Parser: Delay internalizing strings and values.

src/scanner.cc

Index: src/scanner.cc
diff --git a/src/scanner.cc b/src/scanner.cc
index 2e039ca40353ee695e28b465ebdf3e7006aee5a8..467244fd6ea0635e547dd2c900809c25097cb54a 100644
--- a/src/scanner.cc
+++ b/src/scanner.cc
@@ -9,6 +9,7 @@
 #include "scanner.h"
 
 #include "../include/v8stdint.h"
+#include "ast-string-table.h"
 #include "char-predicates-inl.h"
 #include "conversions-inl.h"
 #include "list-inl.h"
@@ -1093,26 +1094,19 @@ bool Scanner::ScanRegExpFlags() {
 }
 
 
-Handle<String> Scanner::AllocateNextLiteralString(Isolate* isolate,
-                                                  PretenureFlag tenured) {
-  if (is_next_literal_one_byte()) {
-    return isolate->factory()->NewStringFromOneByte(
-        next_literal_one_byte_string(), tenured).ToHandleChecked();
-  } else {
-    return isolate->factory()->NewStringFromTwoByte(
-        next_literal_two_byte_string(), tenured).ToHandleChecked();
+const AstString* Scanner::CurrentSymbol(AstStringTable* string_table) {
+  if (is_literal_one_byte()) {
+    return string_table->GetOneByteString(literal_one_byte_string());
   }
+  return string_table->GetTwoByteString(literal_two_byte_string());
 }
 
 
-Handle<String> Scanner::AllocateInternalizedString(Isolate* isolate) {
-  if (is_literal_one_byte()) {
-    return isolate->factory()->InternalizeOneByteString(
-        literal_one_byte_string());
-  } else {
-    return isolate->factory()->InternalizeTwoByteString(
-        literal_two_byte_string());
+const AstString* Scanner::NextSymbol(AstStringTable* string_table) {
+  if (is_next_literal_one_byte()) {
+    return string_table->GetOneByteString(next_literal_one_byte_string());
   }
+  return string_table->GetTwoByteString(next_literal_two_byte_string());
 }