Inline internal getters for typed arrays & friends.

src/runtime.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 1114 matching lines @@
       return *isolate->factory()->true_value();
     } else {
       return *isolate->factory()->false_value();
     }
   }
 
   return *isolate->factory()->false_value();
 }
 
 
-#define TYPED_ARRAY_GETTER(getter, accessor) \
-  RUNTIME_FUNCTION(MaybeObject*, Runtime_TypedArrayGet##getter) {             \
+#define BUFFER_VIEW_GETTER(Type, getter, accessor) \
+  RUNTIME_FUNCTION(MaybeObject*, Runtime_##Type##Get##getter) {               \
     HandleScope scope(isolate);                                               \
     ASSERT(args.length() == 1);                                               \
-    CONVERT_ARG_HANDLE_CHECKED(Object, holder, 0);                            \
-    if (!holder->IsJSTypedArray())                                            \
-      return isolate->Throw(*isolate->factory()->NewTypeError(                \
-          "not_typed_array", HandleVector<Object>(NULL, 0)));                 \
-    Handle<JSTypedArray> typed_array(JSTypedArray::cast(*holder));            \
-    return typed_array->accessor();                                           \
+    CONVERT_ARG_HANDLE_CHECKED(JS##Type, holder, 0);                          \
+    return holder->accessor();                                                \
   }
 
-TYPED_ARRAY_GETTER(ByteLength, byte_length)
-TYPED_ARRAY_GETTER(ByteOffset, byte_offset)
-TYPED_ARRAY_GETTER(Length, length)
+BUFFER_VIEW_GETTER(ArrayBufferView, ByteLength, byte_length)
+BUFFER_VIEW_GETTER(ArrayBufferView, ByteOffset, byte_offset)
+BUFFER_VIEW_GETTER(TypedArray, Length, length)
+BUFFER_VIEW_GETTER(DataView, Buffer, buffer)
 
-#undef TYPED_ARRAY_GETTER
+#undef BUFFER_VIEW_GETTER
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_TypedArrayGetBuffer) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(Object, holder, 0);
-  if (!holder->IsJSTypedArray())
-    return isolate->Throw(*isolate->factory()->NewTypeError(
-        "not_typed_array", HandleVector<Object>(NULL, 0)));
-  Handle<JSTypedArray> typed_array(JSTypedArray::cast(*holder));
-  return *typed_array->GetBuffer();
+  CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, holder, 0);
+  return *holder->GetBuffer();
 }
 
 
 // Return codes for Runtime_TypedArraySetFastCases.
 // Should be synchronized with typedarray.js natives.
 enum TypedArraySetResultCodes {
   // Set from typed array of the same type.
   // This is processed by TypedArraySetFastCases
   TYPED_ARRAY_SET_TYPED_ARRAY_SAME_TYPE = 0,
   // Set from typed array of the different type, overlapping in memory.
@@ skipping 94 matching lines @@
   ASSERT(byte_length->IsNumber());
   holder->set_byte_length(*byte_length);
 
   holder->set_weak_next(buffer->weak_first_view());
   buffer->set_weak_first_view(*holder);
 
   return isolate->heap()->undefined_value();
 }
 
 
-RUNTIME_FUNCTION(MaybeObject*, Runtime_DataViewGetBuffer) {
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSDataView, data_view, 0);
-  return data_view->buffer();
-}
-
-
-RUNTIME_FUNCTION(MaybeObject*, Runtime_DataViewGetByteOffset) {
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSDataView, data_view, 0);
-  return data_view->byte_offset();
-}
-
-
-RUNTIME_FUNCTION(MaybeObject*, Runtime_DataViewGetByteLength) {
-  HandleScope scope(isolate);
-  ASSERT(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(JSDataView, data_view, 0);
-  return data_view->byte_length();
-}
-
-
 inline static bool NeedToFlipBytes(bool is_little_endian) {
 #ifdef V8_TARGET_LITTLE_ENDIAN
   return !is_little_endian;
 #else
   return is_little_endian;
 #endif
 }
 
 
 template<int n>
@@ skipping 13856 matching lines @@
   }
 }
 
 
 void Runtime::OutOfMemory() {
   Heap::FatalProcessOutOfMemory("CALL_AND_RETRY_LAST", true);
   UNREACHABLE();
 }
 
 } }  // namespace v8::internal