Struct StrBuffer 

pub struct StrBuffer<const N: usize> { /* private fields */ }

Fixed-size stack-allocated string buffer.

StrBuffer<N> stores up to N bytes of valid UTF-8 on the stack without heap allocation. Used internally by streaming formatters (e.g., HTML unescape) to buffer partial output across format_with chunk boundaries.

Design note

This exists because streaming Display wrappers receive output in arbitrary-sized chunks via fmt::Write::write_str. When a multi-byte entity (like &) is split across two chunks, the buffer accumulates bytes until the entity is complete. The const-generic size N is chosen per use site to match the longest possible entity.

Implementations

impl<const N: usize> StrBuffer<N>

pub fn new() -> Self

pub fn push_str<'s>(&mut self, s: &'s str) -> Result<(), &'s str>

pub fn as_str(&self) -> &str

pub fn clear(&mut self)

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn first(&self) -> Option<&str>

pub fn strip_first(&mut self) -> Option<()>

Trait Implementations

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

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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

fn default() -> Self

Returns the “default value” for a type.

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

fn eq(&self, other: &StrBuffer<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> Eq for StrBuffer<N>

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