| // Copyright 2014 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/accessors.h" |
| #include "src/arguments.h" |
| #include "src/compiler.h" |
| #include "src/deoptimizer.h" |
| #include "src/frames-inl.h" |
| #include "src/isolate-inl.h" |
| #include "src/messages.h" |
| #include "src/profiler/cpu-profiler.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetName) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| return f->shared()->name(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionSetName) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 2); |
| |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, f, 0); |
| CONVERT_ARG_HANDLE_CHECKED(String, name, 1); |
| |
| name = String::Flatten(name); |
| f->shared()->set_name(*name); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionNameShouldPrintAsAnonymous) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| return isolate->heap()->ToBoolean( |
| f->shared()->name_should_print_as_anonymous()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_CompleteFunctionConstruction) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 3); |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, func, 0); |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, constructor, 1); |
| CONVERT_ARG_HANDLE_CHECKED(Object, unchecked_new_target, 2); |
| func->shared()->set_name_should_print_as_anonymous(true); |
| |
| if (unchecked_new_target->IsUndefined()) return *func; |
| |
| Handle<JSReceiver> new_target = |
| Handle<JSReceiver>::cast(unchecked_new_target); |
| // If new.target is equal to |constructor| then the function |func| created |
| // is already correctly setup and nothing else should be done here. |
| // But if new.target is not equal to |constructor| then we are have a |
| // Function builtin subclassing case and therefore the function |func| |
| // has wrong initial map. To fix that we create a new function object with |
| // correct initial map. |
| if (*constructor == *new_target) return *func; |
| |
| // Create a new JSFunction object with correct initial map. |
| HandleScope handle_scope(isolate); |
| |
| DCHECK(constructor->has_initial_map()); |
| Handle<Map> initial_map; |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| isolate, initial_map, |
| JSFunction::GetDerivedMap(isolate, constructor, new_target)); |
| |
| Handle<SharedFunctionInfo> shared_info(func->shared(), isolate); |
| Handle<Map> map = Map::AsLanguageMode( |
| initial_map, shared_info->language_mode(), shared_info->kind()); |
| |
| Handle<Context> context(func->context(), isolate); |
| Handle<JSFunction> result = |
| isolate->factory()->NewFunctionFromSharedFunctionInfo( |
| map, shared_info, context, NOT_TENURED); |
| DCHECK_EQ(func->IsConstructor(), result->IsConstructor()); |
| return *result; |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionIsArrow) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| return isolate->heap()->ToBoolean(f->shared()->is_arrow()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionIsConciseMethod) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| return isolate->heap()->ToBoolean(f->shared()->is_concise_method()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionRemovePrototype) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| RUNTIME_ASSERT(f->RemovePrototype()); |
| f->shared()->set_construct_stub( |
| *isolate->builtins()->ConstructedNonConstructable()); |
| |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetScript) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| |
| CONVERT_ARG_CHECKED(JSFunction, fun, 0); |
| Handle<Object> script = Handle<Object>(fun->shared()->script(), isolate); |
| if (!script->IsScript()) return isolate->heap()->undefined_value(); |
| |
| return *Script::GetWrapper(Handle<Script>::cast(script)); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetSourceCode) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, f, 0); |
| Handle<SharedFunctionInfo> shared(f->shared()); |
| return *shared->GetSourceCode(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetScriptSourcePosition) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| |
| CONVERT_ARG_CHECKED(JSFunction, fun, 0); |
| int pos = fun->shared()->start_position(); |
| return Smi::FromInt(pos); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionGetPositionForOffset) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 2); |
| |
| CONVERT_ARG_CHECKED(Code, code, 0); |
| CONVERT_NUMBER_CHECKED(int, offset, Int32, args[1]); |
| |
| RUNTIME_ASSERT(0 <= offset && offset < code->Size()); |
| |
| Address pc = code->address() + offset; |
| return Smi::FromInt(code->SourcePosition(pc)); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionSetInstanceClassName) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 2); |
| |
| CONVERT_ARG_CHECKED(JSFunction, fun, 0); |
| CONVERT_ARG_CHECKED(String, name, 1); |
| fun->shared()->set_instance_class_name(name); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionSetLength) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 2); |
| |
| CONVERT_ARG_CHECKED(JSFunction, fun, 0); |
| CONVERT_SMI_ARG_CHECKED(length, 1); |
| RUNTIME_ASSERT((length & 0xC0000000) == 0xC0000000 || |
| (length & 0xC0000000) == 0x0); |
| fun->shared()->set_length(length); |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionSetPrototype) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 2); |
| |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, fun, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, value, 1); |
| RUNTIME_ASSERT(fun->IsConstructor()); |
| RETURN_FAILURE_ON_EXCEPTION(isolate, |
| Accessors::FunctionSetPrototype(fun, value)); |
| return args[0]; // return TOS |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionIsAPIFunction) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| return isolate->heap()->ToBoolean(f->shared()->IsApiFunction()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionHidesSource) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_CHECKED(JSFunction, f, 0); |
| |
| SharedFunctionInfo* shared = f->shared(); |
| bool hide_source = !shared->script()->IsScript() || |
| Script::cast(shared->script())->hide_source(); |
| return isolate->heap()->ToBoolean(hide_source); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_SetCode) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 2); |
| |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, target, 0); |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, source, 1); |
| |
| Handle<SharedFunctionInfo> target_shared(target->shared()); |
| Handle<SharedFunctionInfo> source_shared(source->shared()); |
| RUNTIME_ASSERT(!source_shared->bound()); |
| |
| if (!Compiler::Compile(source, KEEP_EXCEPTION)) { |
| return isolate->heap()->exception(); |
| } |
| |
| // Mark both, the source and the target, as un-flushable because the |
| // shared unoptimized code makes them impossible to enqueue in a list. |
| DCHECK(target_shared->code()->gc_metadata() == NULL); |
| DCHECK(source_shared->code()->gc_metadata() == NULL); |
| target_shared->set_dont_flush(true); |
| source_shared->set_dont_flush(true); |
| |
| // Set the code, scope info, formal parameter count, and the length |
| // of the target shared function info. |
| target_shared->ReplaceCode(source_shared->code()); |
| target_shared->set_scope_info(source_shared->scope_info()); |
| target_shared->set_length(source_shared->length()); |
| target_shared->set_feedback_vector(source_shared->feedback_vector()); |
| target_shared->set_internal_formal_parameter_count( |
| source_shared->internal_formal_parameter_count()); |
| target_shared->set_start_position_and_type( |
| source_shared->start_position_and_type()); |
| target_shared->set_end_position(source_shared->end_position()); |
| bool was_native = target_shared->native(); |
| target_shared->set_compiler_hints(source_shared->compiler_hints()); |
| target_shared->set_opt_count_and_bailout_reason( |
| source_shared->opt_count_and_bailout_reason()); |
| target_shared->set_native(was_native); |
| target_shared->set_profiler_ticks(source_shared->profiler_ticks()); |
| SharedFunctionInfo::SetScript( |
| target_shared, Handle<Object>(source_shared->script(), isolate)); |
| |
| // Set the code of the target function. |
| target->ReplaceCode(source_shared->code()); |
| DCHECK(target->next_function_link()->IsUndefined()); |
| |
| // Make sure we get a fresh copy of the literal vector to avoid cross |
| // context contamination. |
| Handle<Context> context(source->context()); |
| target->set_context(*context); |
| |
| int number_of_literals = source->NumberOfLiterals(); |
| Handle<LiteralsArray> literals = |
| LiteralsArray::New(isolate, handle(target_shared->feedback_vector()), |
| number_of_literals, TENURED); |
| target->set_literals(*literals); |
| |
| if (isolate->logger()->is_logging_code_events() || |
| isolate->cpu_profiler()->is_profiling()) { |
| isolate->logger()->LogExistingFunction(source_shared, |
| Handle<Code>(source_shared->code())); |
| } |
| |
| return *target; |
| } |
| |
| |
| // Set the native flag on the function. |
| // This is used to decide if we should transform null and undefined |
| // into the global object when doing call and apply. |
| RUNTIME_FUNCTION(Runtime_SetNativeFlag) { |
| SealHandleScope shs(isolate); |
| RUNTIME_ASSERT(args.length() == 1); |
| |
| CONVERT_ARG_CHECKED(Object, object, 0); |
| |
| if (object->IsJSFunction()) { |
| JSFunction* func = JSFunction::cast(object); |
| func->shared()->set_native(true); |
| } |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_IsConstructor) { |
| SealHandleScope shs(isolate); |
| DCHECK_EQ(1, args.length()); |
| CONVERT_ARG_CHECKED(Object, object, 0); |
| return isolate->heap()->ToBoolean(object->IsConstructor()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_SetForceInlineFlag) { |
| SealHandleScope shs(isolate); |
| RUNTIME_ASSERT(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(Object, object, 0); |
| |
| if (object->IsJSFunction()) { |
| JSFunction* func = JSFunction::cast(*object); |
| func->shared()->set_force_inline(true); |
| } |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| // Find the arguments of the JavaScript function invocation that called |
| // into C++ code. Collect these in a newly allocated array of handles (possibly |
| // prefixed by a number of empty handles). |
| base::SmartArrayPointer<Handle<Object>> Runtime::GetCallerArguments( |
| Isolate* isolate, int prefix_argc, int* total_argc) { |
| // Find frame containing arguments passed to the caller. |
| JavaScriptFrameIterator it(isolate); |
| JavaScriptFrame* frame = it.frame(); |
| List<JSFunction*> functions(2); |
| frame->GetFunctions(&functions); |
| if (functions.length() > 1) { |
| int inlined_jsframe_index = functions.length() - 1; |
| TranslatedState translated_values(frame); |
| translated_values.Prepare(false, frame->fp()); |
| |
| int argument_count = 0; |
| TranslatedFrame* translated_frame = |
| translated_values.GetArgumentsInfoFromJSFrameIndex( |
| inlined_jsframe_index, &argument_count); |
| TranslatedFrame::iterator iter = translated_frame->begin(); |
| |
| // Skip the function. |
| iter++; |
| |
| // Skip the receiver. |
| iter++; |
| argument_count--; |
| |
| *total_argc = prefix_argc + argument_count; |
| base::SmartArrayPointer<Handle<Object> > param_data( |
| NewArray<Handle<Object> >(*total_argc)); |
| bool should_deoptimize = false; |
| for (int i = 0; i < argument_count; i++) { |
| should_deoptimize = should_deoptimize || iter->IsMaterializedObject(); |
| Handle<Object> value = iter->GetValue(); |
| param_data[prefix_argc + i] = value; |
| iter++; |
| } |
| |
| if (should_deoptimize) { |
| translated_values.StoreMaterializedValuesAndDeopt(); |
| } |
| |
| return param_data; |
| } else { |
| it.AdvanceToArgumentsFrame(); |
| frame = it.frame(); |
| int args_count = frame->ComputeParametersCount(); |
| |
| *total_argc = prefix_argc + args_count; |
| base::SmartArrayPointer<Handle<Object> > param_data( |
| NewArray<Handle<Object> >(*total_argc)); |
| for (int i = 0; i < args_count; i++) { |
| Handle<Object> val = Handle<Object>(frame->GetParameter(i), isolate); |
| param_data[prefix_argc + i] = val; |
| } |
| return param_data; |
| } |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_FunctionBindArguments) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 4); |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, bound_function, 0); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, bindee, 1); |
| CONVERT_ARG_HANDLE_CHECKED(Object, this_object, 2); |
| CONVERT_NUMBER_ARG_HANDLE_CHECKED(new_length, 3); |
| |
| // TODO(lrn): Create bound function in C++ code from premade shared info. |
| bound_function->shared()->set_bound(true); |
| bound_function->shared()->set_optimized_code_map( |
| isolate->heap()->cleared_optimized_code_map()); |
| bound_function->shared()->set_inferred_name(isolate->heap()->empty_string()); |
| bound_function->shared()->set_construct_stub( |
| *isolate->builtins()->JSBuiltinsConstructStub()); |
| // Get all arguments of calling function (Function.prototype.bind). |
| int argc = 0; |
| base::SmartArrayPointer<Handle<Object>> arguments = |
| Runtime::GetCallerArguments(isolate, 0, &argc); |
| // Don't count the this-arg. |
| if (argc > 0) { |
| RUNTIME_ASSERT(arguments[0].is_identical_to(this_object)); |
| argc--; |
| } else { |
| RUNTIME_ASSERT(this_object->IsUndefined()); |
| } |
| // Initialize array of bindings (function, this, and any existing arguments |
| // if the function was already bound). |
| Handle<BindingsArray> new_bindings; |
| int out_index = 0; |
| Handle<TypeFeedbackVector> vector( |
| bound_function->shared()->feedback_vector()); |
| if (bindee->IsJSFunction() && JSFunction::cast(*bindee)->shared()->bound()) { |
| Handle<BindingsArray> old_bindings( |
| JSFunction::cast(*bindee)->function_bindings()); |
| RUNTIME_ASSERT(old_bindings->bindings_count() >= 0); |
| bindee = handle(old_bindings->bound_function(), isolate); |
| Handle<Object> old_bound_this(old_bindings->bound_this(), isolate); |
| new_bindings = BindingsArray::New(isolate, vector, bindee, old_bound_this, |
| old_bindings->bindings_count() + argc); |
| for (int n = old_bindings->bindings_count(); out_index < n; out_index++) { |
| new_bindings->set_binding(out_index, old_bindings->binding(out_index)); |
| } |
| } else { |
| new_bindings = |
| BindingsArray::New(isolate, vector, bindee, this_object, argc); |
| } |
| // Copy arguments, skipping the first which is "this_arg". |
| for (int j = 0; j < argc; j++, out_index++) { |
| new_bindings->set_binding(out_index, *arguments[j + 1]); |
| } |
| new_bindings->set_map_no_write_barrier(isolate->heap()->fixed_array_map()); |
| bound_function->set_function_bindings(*new_bindings); |
| |
| // Update length. Have to remove the prototype first so that map migration |
| // is happy about the number of fields. |
| RUNTIME_ASSERT(bound_function->RemovePrototype()); |
| |
| // The new function should have the same [[Prototype]] as the bindee. |
| Handle<Map> bound_function_map = |
| bindee->IsConstructor() |
| ? isolate->bound_function_with_constructor_map() |
| : isolate->bound_function_without_constructor_map(); |
| PrototypeIterator iter(isolate, bindee); |
| Handle<Object> proto = PrototypeIterator::GetCurrent(iter); |
| if (bound_function_map->prototype() != *proto) { |
| bound_function_map = Map::TransitionToPrototype(bound_function_map, proto, |
| REGULAR_PROTOTYPE); |
| } |
| JSObject::MigrateToMap(bound_function, bound_function_map); |
| DCHECK_EQ(bindee->IsConstructor(), bound_function->IsConstructor()); |
| |
| Handle<String> length_string = isolate->factory()->length_string(); |
| // These attributes must be kept in sync with how the bootstrapper |
| // configures the bound_function_map retrieved above. |
| // We use ...IgnoreAttributes() here because of length's read-onliness. |
| PropertyAttributes attr = |
| static_cast<PropertyAttributes>(DONT_ENUM | READ_ONLY); |
| RETURN_FAILURE_ON_EXCEPTION( |
| isolate, JSObject::SetOwnPropertyIgnoreAttributes( |
| bound_function, length_string, new_length, attr)); |
| return *bound_function; |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_BoundFunctionGetBindings) { |
| HandleScope handles(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, callable, 0); |
| if (callable->IsJSFunction()) { |
| Handle<JSFunction> function = Handle<JSFunction>::cast(callable); |
| if (function->shared()->bound()) { |
| RUNTIME_ASSERT(function->function_bindings()->IsBindingsArray()); |
| Handle<BindingsArray> bindings(function->function_bindings()); |
| return *BindingsArray::CreateRuntimeBindings(bindings); |
| } |
| } |
| return isolate->heap()->undefined_value(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_NewObjectFromBound) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| // First argument is a function to use as a constructor. |
| CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 0); |
| RUNTIME_ASSERT(function->shared()->bound()); |
| |
| // The argument is a bound function. Extract its bound arguments |
| // and callable. |
| Handle<BindingsArray> bound_args = |
| handle(BindingsArray::cast(function->function_bindings())); |
| int bound_argc = bound_args->bindings_count(); |
| Handle<Object> bound_function(bound_args->bound_function(), isolate); |
| DCHECK(!bound_function->IsJSFunction() || |
| !Handle<JSFunction>::cast(bound_function)->shared()->bound()); |
| |
| int total_argc = 0; |
| base::SmartArrayPointer<Handle<Object>> param_data = |
| Runtime::GetCallerArguments(isolate, bound_argc, &total_argc); |
| for (int i = 0; i < bound_argc; i++) { |
| param_data[i] = handle(bound_args->binding(i), isolate); |
| } |
| |
| Handle<Object> result; |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| isolate, result, Execution::New(isolate, bound_function, bound_function, |
| total_argc, param_data.get())); |
| return *result; |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_Call) { |
| HandleScope scope(isolate); |
| DCHECK_LE(2, args.length()); |
| int const argc = args.length() - 2; |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, target, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 1); |
| ScopedVector<Handle<Object>> argv(argc); |
| for (int i = 0; i < argc; ++i) { |
| argv[i] = args.at<Object>(2 + i); |
| } |
| Handle<Object> result; |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| isolate, result, |
| Execution::Call(isolate, target, receiver, argc, argv.start())); |
| return *result; |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_TailCall) { |
| HandleScope scope(isolate); |
| DCHECK_LE(2, args.length()); |
| int const argc = args.length() - 2; |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, target, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 1); |
| ScopedVector<Handle<Object>> argv(argc); |
| for (int i = 0; i < argc; ++i) { |
| argv[i] = args.at<Object>(2 + i); |
| } |
| Handle<Object> result; |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| isolate, result, |
| Execution::Call(isolate, target, receiver, argc, argv.start())); |
| return *result; |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_Apply) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 5); |
| CONVERT_ARG_HANDLE_CHECKED(JSReceiver, fun, 0); |
| CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 1); |
| CONVERT_ARG_HANDLE_CHECKED(JSObject, arguments, 2); |
| CONVERT_INT32_ARG_CHECKED(offset, 3); |
| CONVERT_INT32_ARG_CHECKED(argc, 4); |
| RUNTIME_ASSERT(offset >= 0); |
| // Loose upper bound to allow fuzzing. We'll most likely run out of |
| // stack space before hitting this limit. |
| static int kMaxArgc = 1000000; |
| RUNTIME_ASSERT(argc >= 0 && argc <= kMaxArgc); |
| |
| // If there are too many arguments, allocate argv via malloc. |
| const int argv_small_size = 10; |
| Handle<Object> argv_small_buffer[argv_small_size]; |
| base::SmartArrayPointer<Handle<Object> > argv_large_buffer; |
| Handle<Object>* argv = argv_small_buffer; |
| if (argc > argv_small_size) { |
| argv = new Handle<Object>[argc]; |
| if (argv == NULL) return isolate->StackOverflow(); |
| argv_large_buffer = base::SmartArrayPointer<Handle<Object> >(argv); |
| } |
| |
| for (int i = 0; i < argc; ++i) { |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| isolate, argv[i], Object::GetElement(isolate, arguments, offset + i)); |
| } |
| |
| Handle<Object> result; |
| ASSIGN_RETURN_FAILURE_ON_EXCEPTION( |
| isolate, result, Execution::Call(isolate, fun, receiver, argc, argv)); |
| return *result; |
| } |
| |
| |
| // ES6 section 9.2.1.2, OrdinaryCallBindThis for sloppy callee. |
| RUNTIME_FUNCTION(Runtime_ConvertReceiver) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_HANDLE_CHECKED(Object, receiver, 0); |
| if (receiver->IsNull() || receiver->IsUndefined()) { |
| return isolate->global_proxy(); |
| } |
| return *Object::ToObject(isolate, receiver).ToHandleChecked(); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_IsFunction) { |
| SealHandleScope shs(isolate); |
| DCHECK(args.length() == 1); |
| CONVERT_ARG_CHECKED(Object, obj, 0); |
| return isolate->heap()->ToBoolean(obj->IsJSFunction()); |
| } |
| |
| |
| RUNTIME_FUNCTION(Runtime_ThrowStrongModeTooFewArguments) { |
| HandleScope scope(isolate); |
| DCHECK(args.length() == 0); |
| THROW_NEW_ERROR_RETURN_FAILURE(isolate, |
| NewTypeError(MessageTemplate::kStrongArity)); |
| } |
| |
| } // namespace internal |
| } // namespace v8 |