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General: Make use of std::nullopt where applicable

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Allows some implementations to avoid completely zeroing out the internal
buffer of the optional, and instead only set the validity byte within
the structure.

This also makes it consistent how we return empty optionals.
This commit is contained in:
Lioncash
2020-09-22 17:31:53 -04:00
parent c07fd2898b
commit ff45c39578
17 changed files with 60 additions and 59 deletions
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7
src/core/file_sys/vfs_offset.cpp
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@ -58,10 +58,11 @@ std::size_t OffsetVfsFile::Write(const u8* data, std::size_t length, std::size_t
}
std::optional<u8> OffsetVfsFile::ReadByte(std::size_t r_offset) const {
if (r_offset < size)
return file->ReadByte(offset + r_offset);
if (r_offset >= size) {
return std::nullopt;
}
return {};
return file->ReadByte(offset + r_offset);
}
std::vector<u8> OffsetVfsFile::ReadBytes(std::size_t r_size, std::size_t r_offset) const {