Version 3.7.9.

src/objects-inl.h

 // Copyright 2011 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 2279 matching lines @@
   return READ_FIELD(this, kSecondOffset);
 }
 
 
 void ConsString::set_second(String* value, WriteBarrierMode mode) {
   WRITE_FIELD(this, kSecondOffset, value);
   CONDITIONAL_WRITE_BARRIER(GetHeap(), this, kSecondOffset, value, mode);
 }
 
 
+void ExternalString::clear_data_cache() {
+  WRITE_INTPTR_FIELD(this, kResourceDataOffset, 0);
+}
+
+
 const ExternalAsciiString::Resource* ExternalAsciiString::resource() {
   return *reinterpret_cast<Resource**>(FIELD_ADDR(this, kResourceOffset));
 }
 
 
 void ExternalAsciiString::set_resource(
     const ExternalAsciiString::Resource* resource) {
   *reinterpret_cast<const Resource**>(
       FIELD_ADDR(this, kResourceOffset)) = resource;
+  clear_data_cache();
+}
+
+
+const char* ExternalAsciiString::GetChars() {
+  const char** data_field =
+      reinterpret_cast<const char**>(FIELD_ADDR(this, kResourceDataOffset));
+  if (*data_field == NULL) *data_field = resource()->data();
+  return *data_field;
+}
+
+
+uint16_t ExternalAsciiString::ExternalAsciiStringGet(int index) {
+  ASSERT(index >= 0 && index < length());
+  return GetChars()[index];
 }
 
 
 const ExternalTwoByteString::Resource* ExternalTwoByteString::resource() {
   return *reinterpret_cast<Resource**>(FIELD_ADDR(this, kResourceOffset));
 }
 
 
 void ExternalTwoByteString::set_resource(
     const ExternalTwoByteString::Resource* resource) {
   *reinterpret_cast<const Resource**>(
       FIELD_ADDR(this, kResourceOffset)) = resource;
+  clear_data_cache();
+}
+
+
+const uint16_t* ExternalTwoByteString::GetChars() {
+  const uint16_t** data_field =
+      reinterpret_cast<const uint16_t**>(FIELD_ADDR(this, kResourceDataOffset));
+  if (*data_field == NULL) *data_field = resource()->data();
+  return *data_field;
+}
+
+
+uint16_t ExternalTwoByteString::ExternalTwoByteStringGet(int index) {
+  ASSERT(index >= 0 && index < length());
+  return GetChars()[index];
+}
+
+
+const uint16_t* ExternalTwoByteString::ExternalTwoByteStringGetData(
+      unsigned start) {
+  return GetChars() + start;
 }
 
 
 void JSFunctionResultCache::MakeZeroSize() {
   set_finger_index(kEntriesIndex);
   set_size(kEntriesIndex);
 }
 
 
 void JSFunctionResultCache::Clear() {
@@ skipping 2297 matching lines @@
 #undef WRITE_INT_FIELD
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_