[Interpreter] Unary operators - typeof, void, and logical not.

src/runtime/runtime-interpreter.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/runtime/runtime-utils.h"
 
 #include "src/arguments.h"
 #include "src/isolate-inl.h"
 
 namespace v8 {
@@ skipping 103 matching lines @@
 
 
 RUNTIME_FUNCTION(Runtime_InterpreterToBoolean) {
   SealHandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_CHECKED(Object, x, 0);
   return isolate->heap()->ToBoolean(x->BooleanValue());
 }
 
 
+RUNTIME_FUNCTION(Runtime_InterpreterLogicalNot) {
+  HandleScope scope(isolate);
+  DCHECK_EQ(1, args.length());
+  CONVERT_ARG_CHECKED(Object, x, 0);
+  return isolate->heap()->ToBoolean(!x->BooleanValue());
+}
+
+
+RUNTIME_FUNCTION(Runtime_InterpreterTypeOf) {
+  HandleScope scope(isolate);
+  DCHECK_EQ(1, args.length());
+  CONVERT_ARG_CHECKED(Object, x, 0);
+  return Object::cast(*Object::TypeOf(isolate, handle(x, isolate)));
+}
+
+
 }  // namespace internal
 }  // namespace v8