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Everywhere: Convert ByteBuffer factory methods from Optional -> ErrorOr

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Apologies for the enormous commit, but I don't see a way to split this
up nicely. In the vast majority of cases it's a simple change. A few
extra places can use TRY instead of manual error checking though. :^)
This commit is contained in:
Sam Atkins 2022-01-20 17:47:39 +00:00 • committed by Andreas Kling
parent 140f1d9e55
commit 45cf40653a
79 changed files with 202 additions and 274 deletions
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15
Kernel/Graphics/VirtIOGPU/GraphicsAdapter.cpp
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@ -214,12 +214,8 @@ ErrorOr<ByteBuffer> GraphicsAdapter::get_edid(size_t output_port_index) const
if (output_port_index >= VIRTIO_GPU_MAX_SCANOUTS)
return Error::from_errno(ENODEV);
auto& edid = m_scanouts[output_port_index].edid;
if (edid.has_value()) {
auto bytes = ByteBuffer::copy(edid.value().bytes());
if (!bytes.has_value())
return Error::from_errno(ENOMEM);
return bytes.release_value();
}
if (edid.has_value())
return ByteBuffer::copy(edid.value().bytes());
return ByteBuffer {};
}
@ -243,11 +239,8 @@ auto GraphicsAdapter::query_edid(u32 scanout_id) -> ErrorOr<Optional<EDID::Parse
if (response.size == 0)
return Error::from_string_literal("VirtIO::GraphicsAdapter: Failed to get EDID, empty buffer");
auto edid_buffer = ByteBuffer::copy(response.edid, response.size);
if (!edid_buffer.has_value())
return Error::from_errno(ENOMEM);
auto edid = TRY(EDID::Parser::from_bytes(edid_buffer.release_value()));
auto edid_buffer = TRY(ByteBuffer::copy(response.edid, response.size));
auto edid = TRY(EDID::Parser::from_bytes(move(edid_buffer)));
return edid;
}