Struct JsString

Source

pub struct JsString { /* private fields */ }

Expand description

A Latin1 or UTF-16–encoded, reference counted, immutable string.

This is pretty similar to a Rc<[u16]>, but without the length metadata associated with the Rc fat pointer. Instead, the length of every string is stored on the heap, along with its reference counter and its data.

The string can be latin1 (stored as a byte for space efficiency) or U16 encoding.

We define some commonly used string constants in an interner. For these strings, we don’t allocate memory on the heap to reduce the overhead of memory allocation and reference counting.

JsString

Struct JsString Copy item path

Implementations§

impl JsString

pub fn iter(&self) -> Iter<'_> ⓘ

pub fn windows(&self, size: usize) -> Windows<'_>

pub fn to_std_string_escaped(&self) -> String

pub fn to_std_string_lossy(&self) -> String

pub fn to_std_string(&self) -> Result<String, FromUtf16Error>

§Errors

pub fn to_std_string_with_surrogates( &self, ) -> impl Iterator<Item = Result<String, u16>>

pub fn map_valid_segments<F>(&self, f: F) -> JsStringwhere F: FnMut(String) -> String,

pub fn code_points(&self) -> impl Iterator<Item = CodePoint> + Clone

pub fn index_of( &self, search_value: JsStr<'_>, from_index: usize, ) -> Option<usize>

pub fn code_point_at(&self, position: usize) -> CodePoint

§Panics

pub fn to_number(&self) -> f64

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn to_vec(&self) -> Vec<u16>

pub fn contains(&self, element: u8) -> bool

pub fn trim(&self) -> JsStr<'_>

pub fn trim_start(&self) -> JsStr<'_>

pub fn trim_end(&self) -> JsStr<'_>

pub fn get<'a, I>(&'a self, index: I) -> Option<<I as JsSliceIndex<'a>>::Value>where I: JsSliceIndex<'a>,

pub unsafe fn get_unchecked<'a, I>( &'a self, index: I, ) -> <I as JsSliceIndex<'a>>::Valuewhere I: JsSliceIndex<'a>,

§Safety

pub fn get_expect<'a, I>(&'a self, index: I) -> <I as JsSliceIndex<'a>>::Valuewhere I: JsSliceIndex<'a>,

§Panics

pub fn display_escaped(&self) -> JsStrDisplayEscaped<'_>

pub fn display_lossy(&self) -> JsStrDisplayLossy<'_>

pub fn into_raw(self) -> NonNull<RawJsString>

pub unsafe fn from_raw(ptr: NonNull<RawJsString>) -> JsString

§Safety

impl JsString

pub const fn from_static_js_str(src: &'static JsStr<'static>) -> JsString

pub fn is_static(&self) -> bool

pub fn as_str(&self) -> JsStr<'_>

pub fn concat(x: JsStr<'_>, y: JsStr<'_>) -> JsString

pub fn concat_array(strings: &[JsStr<'_>]) -> JsString

pub fn refcount(&self) -> Option<usize>

Trait Implementations§

impl Clone for JsString

fn clone(&self) -> JsString

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

impl Debug for JsString

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

impl Default for JsString

fn default() -> JsString

impl Drop for JsString

fn drop(&mut self)

impl Finalize for JsString

fn finalize(&self)

impl From<&[JsString]> for JsString

fn from(value: &[JsString]) -> JsString

impl<const N: usize> From<&[JsString; N]> for JsString

fn from(value: &[JsString; N]) -> JsString

impl From<&[u16]> for JsString

fn from(s: &[u16]) -> JsString

impl<const N: usize> From<&[u16; N]> for JsString

fn from(s: &[u16; N]) -> JsString

impl<'a> From<&'a JsString> for JsStr<'a>

fn from(value: &'a JsString) -> JsStr<'a>

impl From<&str> for JsString

fn from(s: &str) -> JsString

impl<'a> From<Cow<'a, str>> for JsString

fn from(s: Cow<'a, str>) -> JsString

impl From<JsStr<'_>> for JsString

fn from(value: JsStr<'_>) -> JsString

impl From<JsString> for FunctionBinding

fn from(name: JsString) -> Self

impl From<JsString> for JsValue

fn from(value: JsString) -> Self

impl From<JsString> for PropertyKey

fn from(string: JsString) -> Self

impl From<String> for JsString

fn from(s: String) -> JsString

impl From<f32> for JsString

fn from(value: f32) -> JsString

impl From<f64> for JsString

Struct JsString

pub fn map_valid_segments<F>(&self, f: F) -> JsString
where F: FnMut(String) -> String,

pub fn get<'a, I>(&'a self, index: I) -> Option<<I as JsSliceIndex<'a>>::Value>
where I: JsSliceIndex<'a>,

pub unsafe fn get_unchecked<'a, I>( &'a self, index: I, ) -> <I as JsSliceIndex<'a>>::Value
where I: JsSliceIndex<'a>,

pub fn get_expect<'a, I>(&'a self, index: I) -> <I as JsSliceIndex<'a>>::Value
where I: JsSliceIndex<'a>,

fn hash<H>(&self, state: &mut H)
where H: Hasher,

fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

fn max(self, other: Self) -> Self
where Self: Sized,

fn min(self, other: Self) -> Self
where Self: Sized,

fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,