This will enable us to get the correct crate names for Rust gencode. The actual
reading of the mapping file in protoc happens in the followup.
PiperOrigin-RevId: 597509582
If this took a &self there were holes in thread and memory safety, because it's allowed to get multiple &MsgMuts (but only &mut MsgMuts).
PiperOrigin-RevId: 596991263
This change is a pure refactoring and simplification of the code. We replace all MapsWith<TYPE>KeyOps traits through a single generic ProxiedInMapValue<K> trait. Through connecting the runtime maps implementation with Proxied the code gets a lot simpler e.g. we can use View<T> instead of hardcoding the concrete type behind it.
I also expect this change to be beneficial for the gencode. In a subsequent CL we'll implement message values for maps. After this change we'll only have to implement a single trait, while before we had to implement num(key types) many traits.
PiperOrigin-RevId: 596562909
For the cpp runtime, call the `Message::CopyFrom` method.
For the upb runtime, expose the message `MiniTable` and call `upb_Message_DeepCopy`.
PiperOrigin-RevId: 595166276
To satisfy the layering check, we need to depend on :gtest for the headers, in
addition to :gtest_main which provides the main() function.
There are a bunch of formatting changes as a side effect of this, but they
should be harmless.
PiperOrigin-RevId: 594318263
We augment the TYPE_STRING block inside message.cc:GetterForViewOrMut so that we properly return a Mut for strings when it comes to submessages.
PiperOrigin-RevId: 589944498
This significantly simplifies the internals of PrimitiveMut,
and removes the need to refactor BytesMut and ProtoStrMut
to have the same runtime branching.
PiperOrigin-RevId: 589292565
This change implements maps with keys and values of type string e.g. Map<ProtoStr, i32> and Map<ProtoStr, ProtoStr>.
Implementing the Map type for ProtoStr has been different from scalar types because ProtoStr is an unsized type i.e. its size is not known at compile time. The existing Map implementation assumed sized types in many places. To make unsized types fit into the existing code architecture I have added an associated type 'Value' to the MapWith*KeyOps traits. The associated type needs to be sized and is the type returned by the Map::get(self, key) method e.g. for aProtoStr, the `type Value = &ProtoStr`.
PiperOrigin-RevId: 588783751
accessors_test.rs is getting a bit unwieldy, approaching 1K LOC. This CL breaks out the repeated tests into their own file (accessors_repeated_test.rs), as we expect the tests here to grow. This follows the precedent of `accessors_map_test.rs`.
PiperOrigin-RevId: 588554476
Before this CL, we weren't generating view accessors for messages with depth > 1.
We weren't getting to message::GetterForViewOrMut because we were detecting FieldDescriptor::TYPE_MESSAGE and bailing out.
That check has now been expunged, and we now properly emit the right view, even for messages embedded within messages.
Added tests for:
- another level of submsg access depth
- accessing a message declared outside of the current message (that is, not a direct nested message within the same message)
- accessing the accessor of the accessor of the accessor of a recursively defined message
PiperOrigin-RevId: 588460599
This CL implements Maps for scalar types for the C++ runtime. It's orthogonal to cl/580453646. This CL is constrained by having to force template instantiation of proto2::Map<K, V>. Put differently, a Rust protobuf::Map<K, V> implementation needs to call 'extern "C"' functions with both key and value type in the function name (e.g. __pb_rust_Map_i32_f64_get()). We use macros to generate a Map implementation for every (K,V)-pair. An alternative would have been to use vtables.
Luckily a key in a protobuf map can only be integer types, bool and string. So the number of key types is bounded by the specification, while the number of value types is not i.e. any protobuf message can be a value in a map. Given these constraints we introduce one 'MapKeyOps' trait per key type e.g. MapKeyBOOLOps or MapKeyI32Ops. These traits need to be implemented for every value type e.g. 'impl MapKeyBOOLOps for i32' will implement 'Map::<bool, i32>'. In particular the MapKeyOps traits can also be implemented for generated messages without violating the orphan rule.
This CL also contains significant changes to the UPB runtime so that both upb.rs and cpp.rs export a similar interface to simplify the implementation in map.rs and the generated code.
This CL does not yet implement the Proxied trait.
PiperOrigin-RevId: 582951914
msg.submsg().x() and msg.submsg().x_mut() should now be callable for strings and bytes. Main idea here was to return &[u8] for bytes (vs [u8]) and &ProtoStr instead of &str or &[u8] for strings.
This CL also expunges IsSimpleScalar.
PiperOrigin-RevId: 582809307
We've had access to views for submessages for a while:
If you hit some_message.submsg().some_int(), you'll get a view for that int.
Until now, there hasn't been a way to get some_message.submsg_mut(), so we introduce the mutational pathway here.
We haven't added fully-functioning mutation, but this is a step towards that goal.
subview was inaccurate, so I've refactored and renamed: { accessor_fns_for_views, accessor_fns_for_muts }.
PiperOrigin-RevId: 581984371
We continue our foray into googletest-rust [1], this time with homegrown matchers.
Our unit tests will now be able to check is_unset() and is_set() for all types that implement ProxiedWithPresence. In practice, this boils down to [u8] and ProtoStr.
Note that we've broken out matchers_upb and matchers_cpp, similar to what was done with aliasing here [2].
[1] https://github.com/google/googletest-rust
[2] 9a0bc392b3 (diff-08e5182ff36ad340a3bfb628995524a2a36a89b59a514ba027b0f25e048dd5c3R90)
PiperOrigin-RevId: 573895179
We had previously commented out the upb portion of simple_nested_test.
This is because nonmutable getters have submessages being NULL by default.
This means that trying to fetch anything, like a simple scalar from that nested message would segfault.
This CL makes the externC return an Option<RawMessage> since we've discovered that upb can return NULL. This way, we can check for `None` and handle the NULL case appropriately.
We know that the NULL pathway can only come from terra upb, since
cpp automagically constructs submsgs if they don't exist.
We've augmented upb.rs to contain a scratch space that allocates a zeroed-out contiguous chunk of memory @64KB. Since a block of zeroed-out memory is a legit message from upb's point of view, we can provide $pbr$::ScratchSpace::zeroed_block() to upb in order to get the default submessage behavior we want from upb.
This block is lazily allocated upon first request. This means that a consumer of the cpp kernel will not incur an additional cost.
PiperOrigin-RevId: 573840755
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