581f20e6f2
This makes the implicit run-time assertion in PropertyName::to_string() into an explicit compile-time requirement, removes a wasteful FlyString -> PropertyName -> FlyString construction from NativeFunction::create() and allows setting the function name to a null string for anonymous native functions.
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
/*
|
|
* Copyright (c) 2020, Linus Groh <linusg@serenityos.org>
|
|
*
|
|
* SPDX-License-Identifier: BSD-2-Clause
|
|
*/
|
|
|
|
#include <LibJS/Runtime/ArrayBuffer.h>
|
|
#include <LibJS/Runtime/ArrayBufferConstructor.h>
|
|
#include <LibJS/Runtime/Error.h>
|
|
#include <LibJS/Runtime/GlobalObject.h>
|
|
#include <LibJS/Runtime/TypedArray.h>
|
|
|
|
namespace JS {
|
|
|
|
ArrayBufferConstructor::ArrayBufferConstructor(GlobalObject& global_object)
|
|
: NativeFunction(vm().names.ArrayBuffer.as_string(), *global_object.function_prototype())
|
|
{
|
|
}
|
|
|
|
void ArrayBufferConstructor::initialize(GlobalObject& global_object)
|
|
{
|
|
auto& vm = this->vm();
|
|
NativeFunction::initialize(global_object);
|
|
|
|
// 25.1.4.2 ArrayBuffer.prototype, https://tc39.es/ecma262/#sec-arraybuffer.prototype
|
|
define_property(vm.names.prototype, global_object.array_buffer_prototype(), 0);
|
|
|
|
define_property(vm.names.length, Value(1), Attribute::Configurable);
|
|
|
|
u8 attr = Attribute::Writable | Attribute::Configurable;
|
|
define_native_function(vm.names.isView, is_view, 1, attr);
|
|
|
|
// 25.1.5.4 ArrayBuffer.prototype [ @@toStringTag ], https://tc39.es/ecma262/#sec-arraybuffer.prototype-@@tostringtag
|
|
define_native_accessor(*vm.well_known_symbol_species(), symbol_species_getter, {}, Attribute::Configurable);
|
|
}
|
|
|
|
ArrayBufferConstructor::~ArrayBufferConstructor()
|
|
{
|
|
}
|
|
|
|
// 25.1.3.1 ArrayBuffer ( length ), https://tc39.es/ecma262/#sec-arraybuffer-length
|
|
Value ArrayBufferConstructor::call()
|
|
{
|
|
auto& vm = this->vm();
|
|
vm.throw_exception<TypeError>(global_object(), ErrorType::ConstructorWithoutNew, vm.names.ArrayBuffer);
|
|
return {};
|
|
}
|
|
|
|
// 25.1.3.1 ArrayBuffer ( length ), https://tc39.es/ecma262/#sec-arraybuffer-length
|
|
Value ArrayBufferConstructor::construct(FunctionObject&)
|
|
{
|
|
auto& vm = this->vm();
|
|
auto byte_length = vm.argument(0).to_index(global_object());
|
|
if (vm.exception()) {
|
|
if (vm.exception()->value().is_object() && is<RangeError>(vm.exception()->value().as_object())) {
|
|
// Re-throw more specific RangeError
|
|
vm.clear_exception();
|
|
vm.throw_exception<RangeError>(global_object(), ErrorType::InvalidLength, "array buffer");
|
|
}
|
|
return {};
|
|
}
|
|
return ArrayBuffer::create(global_object(), byte_length);
|
|
}
|
|
|
|
// 25.1.4.1 ArrayBuffer.isView ( arg ), https://tc39.es/ecma262/#sec-arraybuffer.isview
|
|
JS_DEFINE_NATIVE_FUNCTION(ArrayBufferConstructor::is_view)
|
|
{
|
|
auto arg = vm.argument(0);
|
|
if (!arg.is_object())
|
|
return Value(false);
|
|
if (arg.as_object().is_typed_array())
|
|
return Value(true);
|
|
// FIXME: Check for DataView as well
|
|
return Value(false);
|
|
}
|
|
|
|
// 25.1.4.3 get ArrayBuffer [ @@species ], https://tc39.es/ecma262/#sec-get-arraybuffer-@@species
|
|
JS_DEFINE_NATIVE_GETTER(ArrayBufferConstructor::symbol_species_getter)
|
|
{
|
|
return vm.this_value(global_object);
|
|
}
|
|
|
|
}
|