`Vec<u8>` is a more idiomatic Rust type to return for serialization.
For the C++ kernel, we are able to return this type with no extra copying. We
still use `SerializedData` type for FFI, but convert the result into a
`Vec<u8>` using a new `into_vec` method.
The upb kernel serializes onto an arena, so for upb we do need to copy the data
to get it into a `Vec<u8>`.
PiperOrigin-RevId: 644444571
New serialization test will verify the amount of bytes it takes to serialize a message with a field of type INT32 set to different values.
PiperOrigin-RevId: 641044189
This change adds a cfg attribute 'cpp_lite' to the C++ kernel of Protobuf Rust. If C++ lite is selected on the command line, the cfg attribute 'cpp_lite' is set. The root cause of the test failure was that the Debug implementation for full C++ protos uses text proto which is not available in C++ lite. The fix uses the 'cpp_lite' cfg attribute to select a different Debug implementation that doesn't rely on text proto
PiperOrigin-RevId: 640552701
This doesn't _actually_ make the C++ Kernel path ever fail yet, but now that the API is a Result<SerializedData, SerializeError> it can be fixed as an implementation detail.
PiperOrigin-RevId: 638329136
This is equivalent to C++'s `_IsValid` functions. Since proto3 enums are open,
`is_known` seems to be a better name than the misleading `is_valid`.
C++-specific Protocol Buffers documentation already uses "known fields" and
"unknown enum values" expressions.
PiperOrigin-RevId: 630344180
The intent is to avoid codegen issues for simple cases where a message of the shape:
message M {
int32 x = 3
string set_x = 8;
}
Which would otherwise break due to the first field having a setter whose name collides with the second field's getter.
By seeing that 'set_x' matches another field with a common accessor prefixed, it will generate all accessors for that field as though it was named `set_x_8`.
This does not avoid all possible collisions, but should mitigate the vast majority of situations of an accidental collision.
PiperOrigin-RevId: 627776907
The shared tests which access `protobuf_upb` or `protobuf_cpp`
have access to more items than the `protobuf` library itself.
This is because the former don't go through the same re-exporting based
on kernel.
I fix this by creating two test-only libraries that perform the same re-exporting
as the `protobuf` library, but with the kernel explicitly set, and changing the shared
tests to reference that instead of the inner runtime library.
This is needed to reliably test macros, where item paths are relative to the invocation,
not eagerly checked at the macro source.
PiperOrigin-RevId: 624328817
The intent of this directory would be for a layer of Rust bindings that directly map to upb semantics; Rust Protobuf runtime would be layer on top of that Rust, instead of directly on the upb C api.
PiperOrigin-RevId: 624282429
They are not needed after the rules are move into protobuf repo.
Except for the reference to toolchain type, which is currently in rules_proto and can be moved after the implementation is moved into protobuf repo.
PiperOrigin-RevId: 622176865
Rename .deserialize(&mut self) method to .clear_and_parse() (by marking the .deserialized deprecated pointing at the new name, will clean up usages separately)
END_PUBLIC
Per discussion in the team chat, parse/serialize is the most typical terminology for protobuf impls, we don't have much local reason to diverge.
I'm proposing giving the 'better' name to the named ctor since I think that is the one that we expect people to reach for by default; it is generally cleaner than "new then deserialize" pattern since after a parse failure there's not any message still hanging around with implementation-defined contents, along with some other smaller ergonomics benefits.
In C++ (when exceptions aren't enabled) all constructors must be infallible, so it can't have it. In Rust there's no language idiom reason why we shouldn't have an associated fn that returns Result<Msg, ParseErr>.
PiperOrigin-RevId: 618823998
This change implements a custom Debug for messages, views and muts in the C++ kernel. Debug defers to proto2::Utf8Format.
It implements this only for the C++ kernel. We will need to pull in additional dependencies beyond minitables to implement it for UPB as well. This will be done at a later point.
PiperOrigin-RevId: 613191236
The non-string field setters can bypass the vtables already, the string setters still go through the vtable path here because its more important to let them take an `impl SettableValue` to be able to set either a &str or a &ProtoStr already.
PiperOrigin-RevId: 609705233
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