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LibJS: Convert FunctionPrototype functions to ThrowCompletionOr

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This commit is contained in:
Idan Horowitz 2021-10-29 00:40:06 +03:00
parent c0bb456fd2
commit 2a0c51149d
2 changed files with 32 additions and 40 deletions
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62
Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
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@ -29,11 +29,11 @@ void FunctionPrototype::initialize(GlobalObject& global_object)
auto& vm = this->vm();
Object::initialize(global_object);
u8 attr = Attribute::Writable | Attribute::Configurable;
define_old_native_function(vm.names.apply, apply, 2, attr);
define_old_native_function(vm.names.bind, bind, 1, attr);
define_old_native_function(vm.names.call, call, 1, attr);
define_old_native_function(vm.names.toString, to_string, 0, attr);
define_old_native_function(*vm.well_known_symbol_has_instance(), symbol_has_instance, 1, 0);
define_native_function(vm.names.apply, apply, 2, attr);
define_native_function(vm.names.bind, bind, 1, attr);
define_native_function(vm.names.call, call, 1, attr);
define_native_function(vm.names.toString, to_string, 0, attr);
define_native_function(*vm.well_known_symbol_has_instance(), symbol_has_instance, 1, 0);
define_direct_property(vm.names.length, Value(0), Attribute::Configurable);
define_direct_property(vm.names.name, js_string(heap(), ""), Attribute::Configurable);
}
@ -43,30 +43,26 @@ FunctionPrototype::~FunctionPrototype()
}
// 20.2.3.1 Function.prototype.apply ( thisArg, argArray ), https://tc39.es/ecma262/#sec-function.prototype.apply
JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::apply)
JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::apply)
{
auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
return {};
}
auto* this_object = TRY(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function())
return vm.throw_completion<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
auto& function = static_cast<FunctionObject&>(*this_object);
auto this_arg = vm.argument(0);
auto arg_array = vm.argument(1);
if (arg_array.is_nullish())
return TRY_OR_DISCARD(vm.call(function, this_arg));
auto arguments = TRY_OR_DISCARD(create_list_from_array_like(global_object, arg_array));
return TRY_OR_DISCARD(vm.call(function, this_arg, move(arguments)));
return TRY(vm.call(function, this_arg));
auto arguments = TRY(create_list_from_array_like(global_object, arg_array));
return TRY(vm.call(function, this_arg, move(arguments)));
}
// 20.2.3.2 Function.prototype.bind ( thisArg, ...args ), https://tc39.es/ecma262/#sec-function.prototype.bind
JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::bind)
JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::bind)
{
auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
return {};
}
auto* this_object = TRY(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function())
return vm.throw_completion<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
auto& this_function = static_cast<FunctionObject&>(*this_object);
auto bound_this_arg = vm.argument(0);
@ -80,13 +76,11 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::bind)
}
// 20.2.3.3 Function.prototype.call ( thisArg, ...args ), https://tc39.es/ecma262/#sec-function.prototype.call
JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::call)
JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::call)
{
auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
return {};
}
auto* this_object = TRY(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function())
return vm.throw_completion<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
auto& function = static_cast<FunctionObject&>(*this_object);
auto this_arg = vm.argument(0);
MarkedValueList arguments(vm.heap());
@ -94,17 +88,15 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::call)
for (size_t i = 1; i < vm.argument_count(); ++i)
arguments.append(vm.argument(i));
}
return TRY_OR_DISCARD(vm.call(function, this_arg, move(arguments)));
return TRY(vm.call(function, this_arg, move(arguments)));
}
// 20.2.3.5 Function.prototype.toString ( ), https://tc39.es/ecma262/#sec-function.prototype.tostring
JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::to_string)
JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::to_string)
{
auto* this_object = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function()) {
vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
return {};
}
auto* this_object = TRY(vm.this_value(global_object).to_object(global_object));
if (!this_object->is_function())
return vm.throw_completion<TypeError>(global_object, ErrorType::NotAnObjectOfType, "Function");
String function_name;
String function_parameters;
String function_body;
@ -149,9 +141,9 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::to_string)
}
// 20.2.3.6 Function.prototype [ @@hasInstance ] ( V ), https://tc39.es/ecma262/#sec-function.prototype-@@hasinstance
JS_DEFINE_OLD_NATIVE_FUNCTION(FunctionPrototype::symbol_has_instance)
JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::symbol_has_instance)
{
return TRY_OR_DISCARD(ordinary_has_instance(global_object, vm.argument(0), vm.this_value(global_object)));
return TRY(ordinary_has_instance(global_object, vm.argument(0), vm.this_value(global_object)));
}
}

10
Userland/Libraries/LibJS/Runtime/FunctionPrototype.h
View file

@ -19,11 +19,11 @@ public:
virtual ~FunctionPrototype() override;
private:
JS_DECLARE_OLD_NATIVE_FUNCTION(apply);
JS_DECLARE_OLD_NATIVE_FUNCTION(bind);
JS_DECLARE_OLD_NATIVE_FUNCTION(call);
JS_DECLARE_OLD_NATIVE_FUNCTION(to_string);
JS_DECLARE_OLD_NATIVE_FUNCTION(symbol_has_instance);
JS_DECLARE_NATIVE_FUNCTION(apply);
JS_DECLARE_NATIVE_FUNCTION(bind);
JS_DECLARE_NATIVE_FUNCTION(call);
JS_DECLARE_NATIVE_FUNCTION(to_string);
JS_DECLARE_NATIVE_FUNCTION(symbol_has_instance);
};
}