capnp

prepare for v0.27.0 release

prepare for capnp-v0.26.2 release

prepare for capnp-v0.26.1 release

• Use GeneratedCodeArena in construction of RawEnumSchema, avoiding need for an unsafe{}.
• Update Allocator methods to use NonNull.

• Prevent some instances of possible undefined behavior relating to pointer::add().

• Add impl<T: FromClientHook> FromTypelessPipeline for T, to support pipelining on generic capabilities.

• Fix clippy::cast_possible_truncation warnings.

• Fix iterator size_hint() so that it returns the remaining size, not the initial size.

• Prevent undefined behavior on zero-sized alloc in HeapAllocator.

• Prevent multiple potential integer overflows in message construction logic.

• Add GeneratedCodeArena, allowing constant::Reader::new() and RawStructSchema::new() to no longer need an unsafe marker.

• Make primitive_list<bool> return None from as_slice(), to prevent undefined behavior.

• Add unsafe const constructor of constant::Reader and prevent direction construction.
• Add unsafe const constructor of RawStructSchema and prevent direction construction.

• Add #![allow(clippy::all)] in capnp::generated_code().

• Fix ReaderArenaImpl::size_in_words(), which had been returning the size in bytes.

• Update capability::FromServer trait for new async fn method signatures.

• Update capability::Server trait for new async fn support.
• Update optional embedded-io dependency from 0.6.1 to 0.7.1.

• Resolve type on construction of Field. This is expected to improve performance of certain usage patterns of the dynamic API.

• Fix buffer sizing in flatten_segments(). A bug was causing unnecessary allocations in write_message_to_words() and write_message_segments_to_words().

• Implement Clone for capnp::capability::Client.

• Add generated_code!() macro to make it easier to import generated code.

• Add capability::DynClientHook to avoid warnings in generated code.

• Add introspect::panic_invalid_field_index() and introspect::panic_invalid_annotation_indices() so that generated code can pass Clippy while still working on Rust 2015.
• Add impl<T, E> From<Result<T, E>> for Promise<T, E>.

• Mark wire_pointers::set_capability_pointer() and PointerBuilder::get_root() as unsafe. These functions live under the private module, so no downstreams users should be directly using them.
• Add Into impls for converting EnumSchema and StructSchema into their raw counterparts.

• Bump minimum required rustc version to 1.81.0.
• Use core::Error trait, allowing no_std mode to include Error impls.
• Generalize ReaderSegments implementations.
• Remove equality impls for introspect::Type in favor of new loose_equals() method.

• Restore the "unpredictable function pointer comparison" in impl PartialEq for RawBrandedStructSchema and suppress the rustc warning. Downstream users are advised to avoid using depending on type equality. A future capnp release may remove this impl.

• Avoid function pointer comparison in impl PartialEq for RawBrandedStructSchema, as advised by a rustc warning. The new implementation is more expensive.
• Weaken some assertions in DynamicStruct and DynamicList accessors, to avoid the now-more-expensive equality method.

• Fix compilation on 16-bit architectures by setting smaller traveral limit.
• Add a ?Sized bound to a ReaderSegments blanket impl.

• Add message::Reader::get_segments() method.

• Fix bug where ptr::copy_nonoverlapping() was potentially being called on invalid pointers (with length = 0).

• Add support for downcasting dynamic values to fully concrete list and struct types.

• Add trait hook support for streaming RPC methods.
• Add unsafe impl Sync to BuilderArenaImpl.
• Move unsafe impl Send from message::Builder to BuilderArenaImpl.
• Fix misspelled error variant: UnexepectedFarPointer -> UnexpectedFarPointer.

• Add Results::set_pipeline() and ResultsHook::set_pipeline().

• Fix ExactSizeIterator implementations so that they return the number of remaining elements instead of the total length of the underlying list.

• Fix bug in dynamic reflection where get_named() and has_named() could panic on a field that is not present in the schema.

• Fix possible undefined behavior in primitive_list::as_slice() on empty lists.
• Disable primitive_list::as_slice() when T is larger than one byte and the unaligned feature is enabled.
• Enable primitive_list::as_slice() for big-endian targets when T is at most one byte.

• Rename ReadSegmentTableResult to NoAllocSegmentTableInfo and make it public.
• Rename NoAllocBufferSegments::from_segment_table() to NoAllocBufferSegments::from_segment_table_info() and make it public.

• Revert SingleSegmentAllocator generalization because it was unsound.

• Implement SetterInputtext::Owned for all T : AsRef<str>.

• Use binary search instead of linear scan in DynamicStruct::get_named().
• Rename SetPointerBuilder to SetterInput.
• Add Receiver type parameter to SetterInput.
• Support setting text fields by text::Reader or &str, via the SetterInput tactic. This will break code that uses the into() to convert from str to text::Reader in the arguments of such methods.
• Also support setting primitive list fields by native Rust slices, and text list fields by slices of AsRef<str>.
• Update embedded-io dependency to version 0.6.1.
• Use AsRef<[u8]> instead of Deref<Target=[u8]> in NoAllocBufferSegments.
• Generalize SingleSegmentAllocator to take any type that implements AsMut<[u8]>.

• Add PartialEq impls for text::Reader <-> String.

• Regenerate schema_capnp.rs after fixing overly-restrictive lifetimes for struct lists.

• Add PartialOrd impls for text::Reader.

• Add Debug impl for primitive_list::Reader, struct_list::Reader, and others.

• Add support for List(Void) in primitive_list::as_slice().

• Deprecate StructBuilder::get_pointer_field_mut().
• Improve docstring on dynamic_struct::Reader::has().

• Update try_push_segment() to avoid possible overflow panic in 32-bit mode.

• Add overflow checking during segment table reading, to prevent some potential denial of service attacks on 32-bit targets.
• Deprecate SegmentLengthsBuilder::push_segment() in favor of try_push_segment().

• Add read_message_no_alloc() and try_read_message_no_alloc() in serialize and serialize_packed.
• Enable write_message() in no-alloc mode.

• Map std::io::ErrorKind::UnexpectedEof to capnp::ErrorKind::PrematureEndOfFile.

• Make BuilderArena usable in no-alloc contexts. Only single-segment messages are supported.

• Add SingleSegmentAllocator, for use in no-alloc contexts.

• Add #[inline] attribute to many text::Reader and text::Builder methods.

• Add optional (default-enabled) alloc feature to allow no-alloc mode.
• Lazier UTF-8 validation.
• Add missing #[inline] attributes for f32 and f64.
• Add optional embedded-io feature.
• Make SliceSegments a special case of BufferSegments.

• Fix indexing bug in schema::FieldSubset.

• Fix type mismatch copy/paste bug in dynamic_list::Builder::set().

• Add support for reflection. See dynamic_value.rs and schema.rs.