StructJsString

Source

pub struct JsString {/* private fields */ }

Expand description

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

This is pretty similar to aRc<[u16]>, but without thelength metadata associated with theRc fat pointer. Instead, the length of every string isstored 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 allocatememory on the heap to reduce the overhead of memory allocation and reference counting.

Movatterモバイル変換

JsString

StructJsString Copy item path

Implementations§

implJsString

pub fniter(&self) ->Iter<'_>ⓘ

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

pub fnto_std_string_escaped(&self) ->String

pub fnto_std_string_lossy(&self) ->String

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

§Errors

pub fnto_std_string_with_surrogates( &self,) -> implIterator<Item =Result<String,u16>>

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

pub fncode_points(&self) -> implIterator<Item =CodePoint> +Clone

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

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

§Panics

pub fnto_number(&self) ->f64

pub fnlen(&self) ->usize

pub fnis_empty(&self) ->bool

pub fnto_vec(&self) ->Vec<u16>

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

pub fntrim(&self) ->JsStr<'_>

pub fntrim_start(&self) ->JsStr<'_>

pub fntrim_end(&self) ->JsStr<'_>

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

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

§Safety

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

§Panics

pub fndisplay_escaped(&self) -> JsStrDisplayEscaped<'_>

pub fndisplay_lossy(&self) -> JsStrDisplayLossy<'_>

pub fninto_raw(self) ->NonNull<RawJsString>

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

§Safety

implJsString

pub const fnfrom_static_js_str(src: &'staticJsStr<'static>) ->JsString

pub fnis_static(&self) ->bool

pub fnas_str(&self) ->JsStr<'_>

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

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

pub fnrefcount(&self) ->Option<usize>

Trait Implementations§

implClone forJsString

fnclone(&self) ->JsString

fnclone_from(&mut self, source: &Self)

implDebug forJsString

fnfmt(&self, f: &mutFormatter<'_>) ->Result<(),Error>

implDefault forJsString

fndefault() ->JsString

implDrop forJsString

fndrop(&mut self)

implFinalize forJsString

fnfinalize(&self)

implFrom<&[JsString]> forJsString

fnfrom(value: &[JsString]) ->JsString

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

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

implFrom<&[u16]> forJsString

fnfrom(s: &[u16]) ->JsString

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

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

impl<'a>From<&'aJsString> forJsStr<'a>

fnfrom(value: &'aJsString) ->JsStr<'a>

implFrom<&str> forJsString

fnfrom(s: &str) ->JsString

impl<'a>From<Cow<'a,str>> forJsString

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

implFrom<JsStr<'_>> forJsString

fnfrom(value:JsStr<'_>) ->JsString

implFrom<JsString> forFunctionBinding

fnfrom(name:JsString) -> Self

implFrom<JsString> forJsValue

fnfrom(value:JsString) -> Self

implFrom<JsString> forPropertyKey

fnfrom(string:JsString) -> Self

implFrom<String> forJsString

fnfrom(s:String) ->JsString

implFrom<f32> forJsString

fnfrom(value:f32) ->JsString

StructJsString

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

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

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

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

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

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

fnmax(self, other: Self) -> Self
where Self:Sized,

fnmin(self, other: Self) -> Self
where Self:Sized,

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