Revert "[Arguments] Merge (7442,7496] from bleeding_edge."

src/execution.cc

-// Copyright 2011 the V8 project authors. All rights reserved.
+// Copyright 2006-2008 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
 //       with the distribution.
@@ skipping 180 matching lines @@
   }
 
   ASSERT(!Isolate::Current()->has_pending_exception());
   ASSERT(!Isolate::Current()->external_caught_exception());
   return result;
 }
 
 
 Handle<Object> Execution::GetFunctionDelegate(Handle<Object> object) {
   ASSERT(!object->IsJSFunction());
-  Isolate* isolate = Isolate::Current();
-  Factory* factory = isolate->factory();
 
   // If you return a function from here, it will be called when an
   // attempt is made to call the given object as a function.
 
   // Regular expressions can be called as functions in both Firefox
   // and Safari so we allow it too.
   if (object->IsJSRegExp()) {
-    Handle<String> exec = factory->exec_symbol();
+    Handle<String> exec = FACTORY->exec_symbol();
     // TODO(lrn): Bug 617.  We should use the default function here, not the
     // one on the RegExp object.
     Object* exec_function;
     { MaybeObject* maybe_exec_function = object->GetProperty(*exec);
       // This can lose an exception, but the alternative is to put a failure
       // object in a handle, which is not GC safe.
       if (!maybe_exec_function->ToObject(&exec_function)) {
-        return factory->undefined_value();
+        return FACTORY->undefined_value();
       }
     }
     return Handle<Object>(exec_function);
   }
 
   // Objects created through the API can have an instance-call handler
   // that should be used when calling the object as a function.
   if (object->IsHeapObject() &&
       HeapObject::cast(*object)->map()->has_instance_call_handler()) {
     return Handle<JSFunction>(
-        isolate->global_context()->call_as_function_delegate());
+        Isolate::Current()->global_context()->call_as_function_delegate());
   }
 
-  return factory->undefined_value();
+  return FACTORY->undefined_value();
 }
 
 
 Handle<Object> Execution::GetConstructorDelegate(Handle<Object> object) {
   ASSERT(!object->IsJSFunction());
-  Isolate* isolate = Isolate::Current();
 
   // If you return a function from here, it will be called when an
   // attempt is made to call the given object as a constructor.
 
   // Objects created through the API can have an instance-call handler
   // that should be used when calling the object as a function.
   if (object->IsHeapObject() &&
       HeapObject::cast(*object)->map()->has_instance_call_handler()) {
     return Handle<JSFunction>(
-        isolate->global_context()->call_as_constructor_delegate());
+        Isolate::Current()->global_context()->call_as_constructor_delegate());
   }
 
-  return isolate->factory()->undefined_value();
+  return FACTORY->undefined_value();
 }
 
 
 bool StackGuard::IsStackOverflow() {
   ExecutionAccess access(isolate_);
   return (thread_local_.jslimit_ != kInterruptLimit &&
           thread_local_.climit_ != kInterruptLimit);
 }
 
 
@@ skipping 200 matching lines @@
   if (stored_limit != 0) {
     StackGuard::SetStackLimit(stored_limit);
   }
 }
 
 
 // --- C a l l s   t o   n a t i v e s ---
 
 #define RETURN_NATIVE_CALL(name, argc, argv, has_pending_exception)            \
   do {                                                                         \
-    Isolate* isolate = Isolate::Current();                                     \
     Object** args[argc] = argv;                                                \
     ASSERT(has_pending_exception != NULL);                                     \
-    return Call(isolate->name##_fun(),                                         \
-                isolate->js_builtins_object(), argc, args,                     \
+    return Call(Isolate::Current()->name##_fun(),                              \
+                Isolate::Current()->js_builtins_object(), argc, args,          \
                 has_pending_exception);                                        \
   } while (false)
 
 
 Handle<Object> Execution::ToBoolean(Handle<Object> obj) {
   // See the similar code in runtime.js:ToBoolean.
   if (obj->IsBoolean()) return obj;
   bool result = true;
   if (obj->IsString()) {
     result = Handle<String>::cast(obj)->length() != 0;
@@ skipping 58 matching lines @@
   Handle<JSFunction> function = Handle<JSFunction>(
       pattern->GetIsolate()->global_context()->regexp_function());
   Handle<Object> re_obj = RegExpImpl::CreateRegExpLiteral(
       function, pattern, flags, exc);
   if (*exc) return Handle<JSRegExp>();
   return Handle<JSRegExp>::cast(re_obj);
 }
 
 
 Handle<Object> Execution::CharAt(Handle<String> string, uint32_t index) {
-  Isolate* isolate = string->GetIsolate();
-  Factory* factory = isolate->factory();
-
   int int_index = static_cast<int>(index);
   if (int_index < 0 || int_index >= string->length()) {
-    return factory->undefined_value();
+    return FACTORY->undefined_value();
   }
 
   Handle<Object> char_at =
-      GetProperty(isolate->js_builtins_object(),
-                  factory->char_at_symbol());
+      GetProperty(Isolate::Current()->js_builtins_object(),
+                  FACTORY->char_at_symbol());
   if (!char_at->IsJSFunction()) {
-    return factory->undefined_value();
+    return FACTORY->undefined_value();
   }
 
   bool caught_exception;
-  Handle<Object> index_object = factory->NewNumberFromInt(int_index);
+  Handle<Object> index_object = FACTORY->NewNumberFromInt(int_index);
   Object** index_arg[] = { index_object.location() };
   Handle<Object> result = TryCall(Handle<JSFunction>::cast(char_at),
                                   string,
                                   ARRAY_SIZE(index_arg),
                                   index_arg,
                                   &caught_exception);
   if (caught_exception) {
-    return factory->undefined_value();
+    return FACTORY->undefined_value();
   }
   return result;
 }
 
 
 Handle<JSFunction> Execution::InstantiateFunction(
     Handle<FunctionTemplateInfo> data, bool* exc) {
-  Isolate* isolate = data->GetIsolate();
   // Fast case: see if the function has already been instantiated
   int serial_number = Smi::cast(data->serial_number())->value();
   Object* elm =
-      isolate->global_context()->function_cache()->
+      Isolate::Current()->global_context()->function_cache()->
           GetElementNoExceptionThrown(serial_number);
   if (elm->IsJSFunction()) return Handle<JSFunction>(JSFunction::cast(elm));
   // The function has not yet been instantiated in this context; do it.
   Object** args[1] = { Handle<Object>::cast(data).location() };
   Handle<Object> result =
-      Call(isolate->instantiate_fun(),
-           isolate->js_builtins_object(), 1, args, exc);
+      Call(Isolate::Current()->instantiate_fun(),
+           Isolate::Current()->js_builtins_object(), 1, args, exc);
   if (*exc) return Handle<JSFunction>::null();
   return Handle<JSFunction>::cast(result);
 }
 
 
 Handle<JSObject> Execution::InstantiateObject(Handle<ObjectTemplateInfo> data,
                                               bool* exc) {
-  Isolate* isolate = data->GetIsolate();
   if (data->property_list()->IsUndefined() &&
       !data->constructor()->IsUndefined()) {
     // Initialization to make gcc happy.
     Object* result = NULL;
     {
-      HandleScope scope(isolate);
+      HandleScope scope;
       Handle<FunctionTemplateInfo> cons_template =
           Handle<FunctionTemplateInfo>(
               FunctionTemplateInfo::cast(data->constructor()));
       Handle<JSFunction> cons = InstantiateFunction(cons_template, exc);
       if (*exc) return Handle<JSObject>::null();
       Handle<Object> value = New(cons, 0, NULL, exc);
       if (*exc) return Handle<JSObject>::null();
       result = *value;
     }
     ASSERT(!*exc);
     return Handle<JSObject>(JSObject::cast(result));
   } else {
     Object** args[1] = { Handle<Object>::cast(data).location() };
     Handle<Object> result =
-        Call(isolate->instantiate_fun(),
-             isolate->js_builtins_object(), 1, args, exc);
+        Call(Isolate::Current()->instantiate_fun(),
+             Isolate::Current()->js_builtins_object(), 1, args, exc);
     if (*exc) return Handle<JSObject>::null();
     return Handle<JSObject>::cast(result);
   }
 }
 
 
 void Execution::ConfigureInstance(Handle<Object> instance,
                                   Handle<Object> instance_template,
                                   bool* exc) {
-  Isolate* isolate = Isolate::Current();
   Object** args[2] = { instance.location(), instance_template.location() };
-  Execution::Call(isolate->configure_instance_fun(),
-                  isolate->js_builtins_object(), 2, args, exc);
+  Execution::Call(Isolate::Current()->configure_instance_fun(),
+                  Isolate::Current()->js_builtins_object(), 2, args, exc);
 }
 
 
 Handle<String> Execution::GetStackTraceLine(Handle<Object> recv,
                                             Handle<JSFunction> fun,
                                             Handle<Object> pos,
                                             Handle<Object> is_global) {
-  Isolate* isolate = fun->GetIsolate();
   const int argc = 4;
   Object** args[argc] = { recv.location(),
                           Handle<Object>::cast(fun).location(),
                           pos.location(),
                           is_global.location() };
   bool caught_exception = false;
   Handle<Object> result =
-      TryCall(isolate->get_stack_trace_line_fun(),
-              isolate->js_builtins_object(), argc, args,
+      TryCall(Isolate::Current()->get_stack_trace_line_fun(),
+              Isolate::Current()->js_builtins_object(), argc, args,
               &caught_exception);
-  if (caught_exception || !result->IsString()) {
-      return isolate->factory()->empty_symbol();
-  }
-
+  if (caught_exception || !result->IsString()) return FACTORY->empty_symbol();
   return Handle<String>::cast(result);
 }
 
 
 static Object* RuntimePreempt() {
   Isolate* isolate = Isolate::Current();
 
   // Clear the preempt request flag.
   isolate->stack_guard()->Continue(PREEMPT);
 
@@ skipping 60 matching lines @@
   // Clear the debug break request flag.
   isolate->stack_guard()->Continue(DEBUGBREAK);
 
   ProcessDebugMesssages(debug_command_only);
 
   // Return to continue execution.
   return isolate->heap()->undefined_value();
 }
 
 void Execution::ProcessDebugMesssages(bool debug_command_only) {
-  Isolate* isolate = Isolate::Current();
   // Clear the debug command request flag.
-  isolate->stack_guard()->Continue(DEBUGCOMMAND);
+  Isolate::Current()->stack_guard()->Continue(DEBUGCOMMAND);
 
-  HandleScope scope(isolate);
+  HandleScope scope;
   // Enter the debugger. Just continue if we fail to enter the debugger.
   EnterDebugger debugger;
   if (debugger.FailedToEnter()) {
     return;
   }
 
   // Notify the debug event listeners. Indicate auto continue if the break was
   // a debug command break.
-  isolate->debugger()->OnDebugBreak(isolate->factory()->undefined_value(),
-                                    debug_command_only);
+  Isolate::Current()->debugger()->OnDebugBreak(FACTORY->undefined_value(),
+                                               debug_command_only);
 }
 
 
 #endif
 
 MaybeObject* Execution::HandleStackGuardInterrupt() {
   Isolate* isolate = Isolate::Current();
   StackGuard* stack_guard = isolate->stack_guard();
   isolate->counters()->stack_interrupts()->Increment();
   if (stack_guard->IsRuntimeProfilerTick()) {
@@ skipping 12 matching lines @@
     return isolate->TerminateExecution();
   }
   if (stack_guard->IsInterrupted()) {
     stack_guard->Continue(INTERRUPT);
     return isolate->StackOverflow();
   }
   return isolate->heap()->undefined_value();
 }
 
 } }  // namespace v8::internal