[builtins] move remaining builtins into separate files.

src/builtins/builtins-api.cc

+// Copyright 2016 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/builtins/builtins.h"
+
+#include "src/api-arguments.h"
+#include "src/api-natives.h"
+#include "src/builtins/builtins-utils.h"
+
+namespace v8 {
+namespace internal {
+
+namespace {
+
+// Returns the holder JSObject if the function can legally be called with this
+// receiver.  Returns nullptr if the call is illegal.
+// TODO(dcarney): CallOptimization duplicates this logic, merge.
+JSObject* GetCompatibleReceiver(Isolate* isolate, FunctionTemplateInfo* info,
+                                JSObject* receiver) {
+  Object* recv_type = info->signature();
+  // No signature, return holder.
+  if (!recv_type->IsFunctionTemplateInfo()) return receiver;
+  FunctionTemplateInfo* signature = FunctionTemplateInfo::cast(recv_type);
+
+  // Check the receiver. Fast path for receivers with no hidden prototypes.
+  if (signature->IsTemplateFor(receiver)) return receiver;
+  if (!receiver->map()->has_hidden_prototype()) return nullptr;
+  for (PrototypeIterator iter(isolate, receiver, kStartAtPrototype,
+                              PrototypeIterator::END_AT_NON_HIDDEN);
+       !iter.IsAtEnd(); iter.Advance()) {
+    JSObject* current = iter.GetCurrent<JSObject>();
+    if (signature->IsTemplateFor(current)) return current;
+  }
+  return nullptr;
+}
+
+template <bool is_construct>
+MUST_USE_RESULT MaybeHandle<Object> HandleApiCallHelper(
+    Isolate* isolate, Handle<HeapObject> function,
+    Handle<HeapObject> new_target, Handle<FunctionTemplateInfo> fun_data,
+    Handle<Object> receiver, BuiltinArguments args) {
+  Handle<JSObject> js_receiver;
+  JSObject* raw_holder;
+  if (is_construct) {
+    DCHECK(args.receiver()->IsTheHole(isolate));
+    if (fun_data->instance_template()->IsUndefined(isolate)) {
+      v8::Local<ObjectTemplate> templ =
+          ObjectTemplate::New(reinterpret_cast<v8::Isolate*>(isolate),
+                              ToApiHandle<v8::FunctionTemplate>(fun_data));
+      fun_data->set_instance_template(*Utils::OpenHandle(*templ));
+    }
+    Handle<ObjectTemplateInfo> instance_template(
+        ObjectTemplateInfo::cast(fun_data->instance_template()), isolate);
+    ASSIGN_RETURN_ON_EXCEPTION(
+        isolate, js_receiver,
+        ApiNatives::InstantiateObject(instance_template,
+                                      Handle<JSReceiver>::cast(new_target)),
+        Object);
+    args[0] = *js_receiver;
+    DCHECK_EQ(*js_receiver, *args.receiver());
+
+    raw_holder = *js_receiver;
+  } else {
+    DCHECK(receiver->IsJSReceiver());
+
+    if (!receiver->IsJSObject()) {
+      // This function cannot be called with the given receiver.  Abort!
+      THROW_NEW_ERROR(
+          isolate, NewTypeError(MessageTemplate::kIllegalInvocation), Object);
+    }
+
+    js_receiver = Handle<JSObject>::cast(receiver);
+
+    if (!fun_data->accept_any_receiver() &&
+        js_receiver->IsAccessCheckNeeded() &&
+        !isolate->MayAccess(handle(isolate->context()), js_receiver)) {
+      isolate->ReportFailedAccessCheck(js_receiver);
+      RETURN_EXCEPTION_IF_SCHEDULED_EXCEPTION(isolate, Object);
+    }
+
+    raw_holder = GetCompatibleReceiver(isolate, *fun_data, *js_receiver);
+
+    if (raw_holder == nullptr) {
+      // This function cannot be called with the given receiver.  Abort!
+      THROW_NEW_ERROR(
+          isolate, NewTypeError(MessageTemplate::kIllegalInvocation), Object);
+    }
+  }
+
+  Object* raw_call_data = fun_data->call_code();
+  if (!raw_call_data->IsUndefined(isolate)) {
+    DCHECK(raw_call_data->IsCallHandlerInfo());
+    CallHandlerInfo* call_data = CallHandlerInfo::cast(raw_call_data);
+    Object* callback_obj = call_data->callback();
+    v8::FunctionCallback callback =
+        v8::ToCData<v8::FunctionCallback>(callback_obj);
+    Object* data_obj = call_data->data();
+
+    LOG(isolate, ApiObjectAccess("call", JSObject::cast(*js_receiver)));
+
+    FunctionCallbackArguments custom(isolate, data_obj, *function, raw_holder,
+                                     *new_target, &args[0] - 1,
+                                     args.length() - 1);
+
+    Handle<Object> result = custom.Call(callback);
+
+    RETURN_EXCEPTION_IF_SCHEDULED_EXCEPTION(isolate, Object);
+    if (result.is_null()) {
+      if (is_construct) return js_receiver;
+      return isolate->factory()->undefined_value();
+    }
+    // Rebox the result.
+    result->VerifyApiCallResultType();
+    if (!is_construct || result->IsJSObject()) return handle(*result, isolate);
+  }
+
+  return js_receiver;
+}
+
+}  // anonymous namespace
+
+BUILTIN(HandleApiCall) {
+  HandleScope scope(isolate);
+  Handle<JSFunction> function = args.target<JSFunction>();
+  Handle<Object> receiver = args.receiver();
+  Handle<HeapObject> new_target = args.new_target();
+  Handle<FunctionTemplateInfo> fun_data(function->shared()->get_api_func_data(),
+                                        isolate);
+  if (new_target->IsJSReceiver()) {
+    RETURN_RESULT_OR_FAILURE(
+        isolate, HandleApiCallHelper<true>(isolate, function, new_target,
+                                           fun_data, receiver, args));
+  } else {
+    RETURN_RESULT_OR_FAILURE(
+        isolate, HandleApiCallHelper<false>(isolate, function, new_target,
+                                            fun_data, receiver, args));
+  }
+}
+
+namespace {
+
+class RelocatableArguments : public BuiltinArguments, public Relocatable {
+ public:
+  RelocatableArguments(Isolate* isolate, int length, Object** arguments)
+      : BuiltinArguments(length, arguments), Relocatable(isolate) {}
+
+  virtual inline void IterateInstance(ObjectVisitor* v) {
+    if (length() == 0) return;
+    v->VisitPointers(lowest_address(), highest_address() + 1);
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(RelocatableArguments);
+};
+
+}  // namespace
+
+MaybeHandle<Object> Builtins::InvokeApiFunction(Isolate* isolate,
+                                                Handle<HeapObject> function,
+                                                Handle<Object> receiver,
+                                                int argc,
+                                                Handle<Object> args[]) {
+  DCHECK(function->IsFunctionTemplateInfo() ||
+         (function->IsJSFunction() &&
+          JSFunction::cast(*function)->shared()->IsApiFunction()));
+
+  // Do proper receiver conversion for non-strict mode api functions.
+  if (!receiver->IsJSReceiver()) {
+    if (function->IsFunctionTemplateInfo() ||
+        is_sloppy(JSFunction::cast(*function)->shared()->language_mode())) {
+      ASSIGN_RETURN_ON_EXCEPTION(isolate, receiver,
+                                 Object::ConvertReceiver(isolate, receiver),
+                                 Object);
+    }
+  }
+
+  Handle<FunctionTemplateInfo> fun_data =
+      function->IsFunctionTemplateInfo()
+          ? Handle<FunctionTemplateInfo>::cast(function)
+          : handle(JSFunction::cast(*function)->shared()->get_api_func_data(),
+                   isolate);
+  Handle<HeapObject> new_target = isolate->factory()->undefined_value();
+  // Construct BuiltinArguments object:
+  // new target, function, arguments reversed, receiver.
+  const int kBufferSize = 32;
+  Object* small_argv[kBufferSize];
+  Object** argv;
+  const int frame_argc = argc + BuiltinArguments::kNumExtraArgsWithReceiver;
+  if (frame_argc <= kBufferSize) {
+    argv = small_argv;
+  } else {
+    argv = new Object*[frame_argc];
+  }
+  int cursor = frame_argc - 1;
+  argv[cursor--] = *receiver;
+  for (int i = 0; i < argc; ++i) {
+    argv[cursor--] = *args[i];
+  }
+  DCHECK(cursor == BuiltinArguments::kArgcOffset);
+  argv[BuiltinArguments::kArgcOffset] = Smi::FromInt(frame_argc);
+  argv[BuiltinArguments::kTargetOffset] = *function;
+  argv[BuiltinArguments::kNewTargetOffset] = *new_target;
+  MaybeHandle<Object> result;
+  {
+    RelocatableArguments arguments(isolate, frame_argc, &argv[frame_argc - 1]);
+    result = HandleApiCallHelper<false>(isolate, function, new_target, fun_data,
+                                        receiver, arguments);
+  }
+  if (argv != small_argv) delete[] argv;
+  return result;
+}
+
+// Helper function to handle calls to non-function objects created through the
+// API. The object can be called as either a constructor (using new) or just as
+// a function (without new).
+MUST_USE_RESULT static Object* HandleApiCallAsFunctionOrConstructor(
+    Isolate* isolate, bool is_construct_call, BuiltinArguments args) {
+  Handle<Object> receiver = args.receiver();
+
+  // Get the object called.
+  JSObject* obj = JSObject::cast(*receiver);
+
+  // Set the new target.
+  HeapObject* new_target;
+  if (is_construct_call) {
+    // TODO(adamk): This should be passed through in args instead of
+    // being patched in here. We need to set a non-undefined value
+    // for v8::FunctionCallbackInfo::IsConstructCall() to get the
+    // right answer.
+    new_target = obj;
+  } else {
+    new_target = isolate->heap()->undefined_value();
+  }
+
+  // Get the invocation callback from the function descriptor that was
+  // used to create the called object.
+  DCHECK(obj->map()->is_callable());
+  JSFunction* constructor = JSFunction::cast(obj->map()->GetConstructor());
+  // TODO(ishell): turn this back to a DCHECK.
+  CHECK(constructor->shared()->IsApiFunction());
+  Object* handler =
+      constructor->shared()->get_api_func_data()->instance_call_handler();
+  DCHECK(!handler->IsUndefined(isolate));
+  // TODO(ishell): remove this debugging code.
+  CHECK(handler->IsCallHandlerInfo());
+  CallHandlerInfo* call_data = CallHandlerInfo::cast(handler);
+  Object* callback_obj = call_data->callback();
+  v8::FunctionCallback callback =
+      v8::ToCData<v8::FunctionCallback>(callback_obj);
+
+  // Get the data for the call and perform the callback.
+  Object* result;
+  {
+    HandleScope scope(isolate);
+    LOG(isolate, ApiObjectAccess("call non-function", obj));
+
+    FunctionCallbackArguments custom(isolate, call_data->data(), constructor,
+                                     obj, new_target, &args[0] - 1,
+                                     args.length() - 1);
+    Handle<Object> result_handle = custom.Call(callback);
+    if (result_handle.is_null()) {
+      result = isolate->heap()->undefined_value();
+    } else {
+      result = *result_handle;
+    }
+  }
+  // Check for exceptions and return result.
+  RETURN_FAILURE_IF_SCHEDULED_EXCEPTION(isolate);
+  return result;
+}
+
+// Handle calls to non-function objects created through the API. This delegate
+// function is used when the call is a normal function call.
+BUILTIN(HandleApiCallAsFunction) {
+  return HandleApiCallAsFunctionOrConstructor(isolate, false, args);
+}
+
+// Handle calls to non-function objects created through the API. This delegate
+// function is used when the call is a construct call.
+BUILTIN(HandleApiCallAsConstructor) {
+  return HandleApiCallAsFunctionOrConstructor(isolate, true, args);
+}
+
+}  // namespace internal
+}  // namespace v8