First cut at impementing ES6 TypedArrays in V8.

src/objects-printer.cc

 // 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 168 matching lines @@
       SharedFunctionInfo::cast(this)->SharedFunctionInfoPrint(out);
       break;
     case JS_MESSAGE_OBJECT_TYPE:
       JSMessageObject::cast(this)->JSMessageObjectPrint(out);
       break;
     case JS_GLOBAL_PROPERTY_CELL_TYPE:
       JSGlobalPropertyCell::cast(this)->JSGlobalPropertyCellPrint(out);
       break;
     case JS_ARRAY_BUFFER_TYPE:
       JSArrayBuffer::cast(this)->JSArrayBufferPrint(out);
+    case JS_TYPED_ARRAY_TYPE:
+      JSTypedArray::cast(this)->JSTypedArrayPrint(out);
 #define MAKE_STRUCT_CASE(NAME, Name, name) \
   case NAME##_TYPE:                        \
     Name::cast(this)->Name##Print(out);    \
     break;
   STRUCT_LIST(MAKE_STRUCT_CASE)
 #undef MAKE_STRUCT_CASE
 
     default:
       PrintF(out, "UNKNOWN TYPE %d", map()->instance_type());
       UNREACHABLE();
@@ skipping 601 matching lines @@
 void JSArrayBuffer::JSArrayBufferPrint(FILE* out) {
   HeapObject::PrintHeader(out, "JSArrayBuffer");
   PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - backing_store = -0x%p\n", backing_store());
   PrintF(out, " - byte_length = ");
   byte_length()->ShortPrint(out);
   PrintF(out, "\n");
 }
 
 
+void JSTypedArray::JSTypedArrayPrint(FILE* out) {
+  HeapObject::PrintHeader(out, "JSTypedArray");
+  PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
+  PrintF(out, " - buffer =");
+  buffer()->ShortPrint(out);
+  PrintF(out, "\n - byte_offset = ");
+  byte_offset()->ShortPrint(out);
+  PrintF(out, "\n - byte_length = ");
+  byte_length()->ShortPrint(out);
+  PrintF(out, " - length = ");
+  length()->ShortPrint(out);
+  PrintF("\n");
+  PrintElements(out);
+}
+
+
 void JSFunction::JSFunctionPrint(FILE* out) {
   HeapObject::PrintHeader(out, "Function");
   PrintF(out, " - map = 0x%p\n", reinterpret_cast<void*>(map()));
   PrintF(out, " - initial_map = ");
   if (has_initial_map()) {
     initial_map()->ShortPrint(out);
   }
   PrintF(out, "\n - shared_info = ");
   shared()->ShortPrint(out);
   PrintF(out, "\n   - name = ");
@@ skipping 365 matching lines @@
     }
   }
   PrintF(out, "\n");
 }
 
 
 #endif  // OBJECT_PRINT
 
 
 } }  // namespace v8::internal