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https://github.com/RGBCube/serenity
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LibJS: Use OrdinaryCreateFromConstructor() in a bunch of constructors
Resolves various FIXMEs :^)
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16 changed files with 173 additions and 102 deletions
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@ -4,6 +4,7 @@
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/AbstractOperations.h>
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#include <LibJS/Runtime/DataView.h>
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#include <LibJS/Runtime/DataViewConstructor.h>
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#include <LibJS/Runtime/Error.h>
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@ -40,28 +41,30 @@ Value DataViewConstructor::call()
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}
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// 25.3.2.1 DataView ( buffer [ , byteOffset [ , byteLength ] ] ), https://tc39.es/ecma262/#sec-dataview-buffer-byteoffset-bytelength
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Value DataViewConstructor::construct(Function&)
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Value DataViewConstructor::construct(Function& new_target)
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{
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auto& vm = this->vm();
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auto& global_object = this->global_object();
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auto buffer = vm.argument(0);
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if (!buffer.is_object() || !is<ArrayBuffer>(buffer.as_object())) {
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vm.throw_exception<TypeError>(global_object(), ErrorType::IsNotAn, buffer.to_string_without_side_effects(), vm.names.ArrayBuffer);
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vm.throw_exception<TypeError>(global_object, ErrorType::IsNotAn, buffer.to_string_without_side_effects(), vm.names.ArrayBuffer);
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return {};
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}
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auto& array_buffer = static_cast<ArrayBuffer&>(buffer.as_object());
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auto offset = vm.argument(1).to_index(global_object());
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auto offset = vm.argument(1).to_index(global_object);
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if (vm.exception())
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return {};
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if (array_buffer.is_detached()) {
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vm.throw_exception<TypeError>(global_object(), ErrorType::DetachedArrayBuffer);
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vm.throw_exception<TypeError>(global_object, ErrorType::DetachedArrayBuffer);
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return {};
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}
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auto buffer_byte_length = array_buffer.byte_length();
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if (offset > buffer_byte_length) {
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vm.throw_exception<RangeError>(global_object(), ErrorType::DataViewOutOfRangeByteOffset, offset, buffer_byte_length);
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vm.throw_exception<RangeError>(global_object, ErrorType::DataViewOutOfRangeByteOffset, offset, buffer_byte_length);
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return {};
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}
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@ -69,22 +72,25 @@ Value DataViewConstructor::construct(Function&)
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if (vm.argument(2).is_undefined()) {
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view_byte_length = buffer_byte_length - offset;
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} else {
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view_byte_length = vm.argument(2).to_index(global_object());
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view_byte_length = vm.argument(2).to_index(global_object);
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if (vm.exception())
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return {};
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if (offset + view_byte_length > buffer_byte_length) {
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vm.throw_exception<RangeError>(global_object(), ErrorType::InvalidLength, vm.names.DataView);
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vm.throw_exception<RangeError>(global_object, ErrorType::InvalidLength, vm.names.DataView);
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return {};
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}
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}
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// FIXME: Use OrdinaryCreateFromConstructor(newTarget, "%DataView.prototype%")
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auto* data_view = ordinary_create_from_constructor<DataView>(global_object, new_target, &GlobalObject::data_view_prototype, &array_buffer, view_byte_length, offset);
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if (vm.exception())
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return {};
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if (array_buffer.is_detached()) {
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vm.throw_exception<TypeError>(global_object(), ErrorType::DetachedArrayBuffer);
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vm.throw_exception<TypeError>(global_object, ErrorType::DetachedArrayBuffer);
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return {};
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}
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return DataView::create(global_object(), &array_buffer, view_byte_length, offset);
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return data_view;
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}
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}
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