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LibCore: Add helper functions to read/write trivial values from streams

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Co-Authored-By: Andrew Kaster <akaster@serenityos.org>
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Tim Schumacher 2023-01-09 18:39:44 +01:00 committed by Andrew Kaster
parent 19bae983e4
commit 202175cf4c
Notes: sideshowbarker 2024-07-17 01:44:21 +09:00 
Author: https://github.com/timschumi
Commit: https://github.com/SerenityOS/serenity/commit/202175cf4c
Pull-request: https://github.com/SerenityOS/serenity/pull/16992
Reviewed-by: https://github.com/ADKaster ✅
1 changed files with 16 additions and 0 deletions
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16
Userland/Libraries/LibCore/Stream.h
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@ -108,6 +108,22 @@ public:
return !write_entire_buffer(buffer).is_error();
}
template<typename T>
requires(IsTriviallyDestructible<T>)
ErrorOr<T> read_trivial_value()
{
alignas(T) u8 buffer[sizeof(T)] = {};
TRY(read_entire_buffer(buffer));
return *bit_cast<T>(buffer);
}
template<typename T>
requires(IsTriviallyDestructible<T>)
ErrorOr<void> write_trivial_value(T const& value)
{
return write_entire_buffer({ &value, sizeof(value) });
}
/// Returns whether the stream has reached the end of file. For sockets,
/// this most likely means that the protocol has disconnected (in the case
/// of TCP). For seekable streams, this means the end of the file. Note that