Struct JsStr

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pub struct JsStr<'a> { /* private fields */ }
Expand description

This is equivalent to Rust’s &str.

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impl<'a> JsStr<'a>

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pub const EMPTY: Self

This represents an empty string.

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pub const fn latin1(value: &'a [u8]) -> Self

Creates a JsStr from codepoints that can fit in a u8.

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pub const fn utf16(value: &'a [u16]) -> Self

Creates a JsStr from utf16 encoded string.

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pub const fn len(&self) -> usize

Get the length of the JsStr.

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pub const fn variant(self) -> JsStrVariant<'a>

Return the inner JsStrVariant varient of the JsStr.

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pub const fn is_latin1(&self) -> bool

Check if the JsStr is latin1 encoded.

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pub const fn as_latin1(&self) -> Option<&[u8]>

Returns u8 slice if the JsStr is latin1 encoded, otherwise None.

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pub fn iter(self) -> Iter<'a>

Iterate over the codepoints of the string.

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

Iterate over the codepoints of the string.

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pub fn is_empty(&self) -> bool

Check if the JsStr is empty.

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pub fn trim(self) -> JsStr<'a>

Trims both leading and trailing space.

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pub fn trim_start(self) -> Self

Trims all leading space.

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pub fn trim_end(self) -> Self

Trims all trailing space.

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

Returns an element or subslice depending on the type of index, otherwise None.

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

Returns an element or subslice depending on the type of index, without doing bounds check.

§Safety

Caller must ensure the index is not out of bounds

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

Convert the JsStr into a Vec<U16>.

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pub fn starts_with(&self, needle: JsStr<'_>) -> bool

Returns true if needle is a prefix of the JsStr.

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pub fn ends_with(&self, needle: JsStr<'_>) -> bool

Returns true if needle is a suffix of the JsStr.

Trait Implementations§

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impl<'a> Clone for JsStr<'a>

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fn clone(&self) -> JsStr<'a>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<'a> Debug for JsStr<'a>

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

Formats the value using the given formatter. Read more
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impl<'a> From<&'a JsString> for JsStr<'a>

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

Converts to this type from the input type.
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impl From<JsStr<'_>> for JsString

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

Converts to this type from the input type.
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impl Hash for JsStr<'_>

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

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for JsStr<'_>

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fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq<&str> for JsStr<'_>

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fn eq(&self, other: &&str) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<JsStr<'_>> for JsString

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fn eq(&self, other: &JsStr<'_>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> PartialEq<JsStr<'a>> for [u16]

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fn eq(&self, other: &JsStr<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<JsString> for JsStr<'_>

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fn eq(&self, other: &JsString) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq<str> for JsStr<'_>

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fn eq(&self, other: &str) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialEq for JsStr<'_>

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fn eq(&self, other: &Self) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl PartialOrd for JsStr<'_>

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fn partial_cmp(&self, other: &Self) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl<'a> Copy for JsStr<'a>

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impl Eq for JsStr<'_>

Auto Trait Implementations§

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impl<'a> Freeze for JsStr<'a>

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impl<'a> RefUnwindSafe for JsStr<'a>

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impl<'a> Send for JsStr<'a>

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impl<'a> Sync for JsStr<'a>

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impl<'a> Unpin for JsStr<'a>

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impl<'a> UnwindSafe for JsStr<'a>

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.