Utilities for safe zero-copy parsing and serialization.
This crate provides utilities which make it easy to perform zero-copy parsing and serialization by allowing zero-copy conversion to/from byte slices.
This is enabled by three core marker traits, each of which can be derived
FromBytesindicates that a type may safely be converted from an arbitrary byte sequence
AsBytesindicates that a type may safely be converted to a byte sequence
Unalignedindicates that a type’s alignment requirement is 1
Types which implement a subset of these traits can then be converted to/from byte sequences with little to no runtime overhead.
Note that these traits are ignorant of byte order. For byte order-aware
types, see the
alloc: By default,
no_std. When the
alloc feature is
alloc crate is added as a dependency, and some
allocation-related functionality is added.
simd: When the
simd feature is enabled,
are emitted for all stable SIMD types which exist on the target platform.
Note that the layout of SIMD types is not yet stabilized, so these impls may
be removed in the future if layout changes make them invalid. For more
information, see the Unsafe Code Guidelines Reference page on the Layout of
packed SIMD vectors.
simd-nightly: Enables the
simd feature and adds support for SIMD types
which are only available on nightly. Since these types are unstable, support
for any type may be removed at any point in the future.
Byte order-aware numeric primitives.
Safely transmutes a value of one type to a value of another type of the same size.
A length- and alignment-checked reference to a byte slice which can safely be reinterpreted as another type.
A type with no alignment requirement.
Types which are safe to treat as an immutable byte slice.
A mutable or immutable reference to a byte slice.
A mutable reference to a byte slice.
Types for which any byte pattern is valid.
Types with no alignment requirement.
Vec<T> by pushing
additional new items onto the end of the
vector. The new items are initialized with zeroes.
additional new items into
The new items are initialized with zeroes.