Struct LiteStr 

pub struct LiteStr<const N: usize> {
    pub bytes: [u8; N],
}

A fixed-capacity, stack-allocated buffer that can hold a UTF-8 string.

LiteStr<N> stores its content in a [u8; N] array using C-style nul termination. The logical length is determined by the position of the first b'\0' byte (or N if the buffer is completely filled without a nul).

This type performs no validation during construction. UTF-8 validity is only checked when the content is accessed via [as_str], Debug, or serialization.

Both [new] and [from_bytes] silently truncate input that exceeds the capacity N. This type is intentionally minimal because each LiteStr<N> is monomorphized independently.

.len()

• Byte length: Use as_bytes().len()
• Unicode character count: Use as_str().unwrap().len()

Fields

bytes: [u8; N]

Implementations

impl<const N: usize> LiteStr<N>

pub const SIZE: usize = N

pub fn new(s: &str) -> Self

Creates a new LiteStr from a &str.

If the input is longer than N bytes, it is truncated at the nearest valid UTF-8 boundary.

pub fn as_str(&self) -> Result<&str, LiteStrErr>

Returns the content as a &str, validating that it is well-formed UTF-8.

Finds the first nul byte and uses that as the end of the str, or if there isn’t a nul byte then uses the whole len N.

pub fn from_bytes(bytes: &[u8]) -> Self

Creates a LiteStr<N> from a byte slice.

Copies up to N bytes from the input and zero-fills the remainder. If bytes.len() > N, the input is silently truncated.

No UTF-8 validation is performed.

pub fn as_bytes(&self) -> &[u8]

Returns the content as a byte slice (up to the first nul byte).

Trait Implementations

impl<const N: usize> Clone for LiteStr<N>

fn clone(&self) -> LiteStr<N>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<const N: usize> Copy for LiteStr<N>

impl<const N: usize> Debug for LiteStr<N>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<const N: usize> Default for LiteStr<N>

fn default() -> Self

Returns the “default value” for a type.

impl<'de, const N: usize> Deserialize<'de> for LiteStr<N>

Available on crate feature serde only.

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<const N: usize> Eq for LiteStr<N>

impl<const N: usize> PartialEq for LiteStr<N>

fn eq(&self, other: &LiteStr<N>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<const N: usize> Serialize for LiteStr<N>

Available on crate feature serde only.

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl<const N: usize> StructuralPartialEq for LiteStr<N>

impl<const N: usize> Write for LiteStr<N>

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a char into this writer, returning whether the write succeeded.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Glue for usage of the write! macro with implementors of this trait.