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LibJS+LibWeb: Implement resizable ArrayBuffer support for TypedArray

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This is (part of) a normative change in the ECMA-262 spec. See:
a9ae96e
This commit is contained in:
Timothy Flynn 2023-12-24 14:55:10 -05:00 • committed by Andreas Kling
parent c7fec9424c
commit 9258d7b98a
47 changed files with 2059 additions and 884 deletions
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11
Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
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@ -526,9 +526,7 @@ private:
if constexpr (IsSame<ViewType, JS::DataView>) {
return JS::make_data_view_with_buffer_witness_record(view, JS::ArrayBuffer::Order::SeqCst);
} else {
// FIXME: Create a TypedArray record when TypedArray supports resizable ArrayBuffer objects.
TODO();
return 0;
return JS::make_typed_array_with_buffer_witness_record(view, JS::ArrayBuffer::Order::SeqCst);
}
}();
@ -537,7 +535,8 @@ private:
if (JS::is_view_out_of_bounds(view_record))
return WebIDL::DataCloneError::create(*m_vm.current_realm(), MUST(String::formatted(JS::ErrorType::BufferOutOfBounds.message(), "DataView"sv)));
} else {
// FIXME: Check TypedArray bounds when TypedArray supports resizable ArrayBuffer objects.
if (JS::is_typed_array_out_of_bounds(view_record))
return WebIDL::DataCloneError::create(*m_vm.current_realm(), MUST(String::formatted(JS::ErrorType::BufferOutOfBounds.message(), "TypedArray"sv)));
}
// 2. Let buffer be the value of value's [[ViewedArrayBuffer]] internal slot.
@ -570,9 +569,9 @@ private:
vector.append(ValueTag::ArrayBufferView);
vector.extend(move(buffer_serialized)); // [[ArrayBufferSerialized]]
TRY(serialize_string(vector, view.element_name())); // [[Constructor]]
vector.append(view.byte_length());
vector.append(JS::typed_array_byte_length(view_record));
vector.append(view.byte_offset());
vector.append(view.array_length());
vector.append(JS::typed_array_length(view_record));
}
return {};
}