Struct Utf16CodeUnits 

pub struct Utf16CodeUnits(pub u32);

A length or offset counted in 16-bit code units in an UTF-16 string. This type is used to more reliable work with lengths or offsets in different encodings.

Tuple Fields

0: u32

Implementations

impl Utf16CodeUnits

const ZERO: Self

pub fn saturating_sub(self, value: Self) -> Self

pub fn to_usize_range(range: &Range<Self>) -> Range<usize>

impl Utf16CodeUnits

pub fn length_of(_: AssumeUnder4GB, string: &str) -> Self

Returns the length of string in UTF-16 code units

pub fn length_of_char(char: char) -> Self

pub fn to_utf8_code_units_in( self, _: AssumeUnder4GB, string: &str, ) -> Utf8CodeUnits

Convert this UTF-16 offset in string to an UTF-8 (byte) offset

pub fn to_utf8_code_units_in_iter<S>( self, _: AssumeUnder4GB, iter: impl IntoIterator<Item = S>, ) -> Utf8CodeUnits

where S: AsRef<str>,

Convert this UTF-16 offset in an iterator of strings, to an UTF-8 (byte) offset

pub fn to_utf32_code_units_in(self, string: &str) -> Utf32CodeUnits

Convert this UTF-16 offset in string to an UTF-32 offset

Note: this never overflows since the return value is always less than or equal to self as one UTF-32 code unit corresponds to one or two UTF-16 code units.

Trait Implementations

impl Add for Utf16CodeUnits

type Output = Utf16CodeUnits

The resulting type after applying the + operator.

fn add(self, other: Self) -> Self

Performs the + operation.

impl AddAssign for Utf16CodeUnits

fn add_assign(&mut self, other: Self)

Performs the += operation.

impl Clone for Utf16CodeUnits

fn clone(&self) -> Utf16CodeUnits

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Utf16CodeUnits

Use compact formatting regardless of Formatter::alternate

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

Formats the value using the given formatter.

impl Default for Utf16CodeUnits

fn default() -> Utf16CodeUnits

Returns the “default value” for a type.

impl From<Utf16CodeUnits> for usize

fn from(value: Utf16CodeUnits) -> usize

Converts to this type from the input type.

impl From<u32> for Utf16CodeUnits

fn from(value: u32) -> Self

Converts to this type from the input type.

impl MallocSizeOf for Utf16CodeUnits

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl Ord for Utf16CodeUnits

fn cmp(&self, other: &Utf16CodeUnits) -> Ordering

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

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

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Utf16CodeUnits

fn eq(&self, other: &Utf16CodeUnits) -> 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 PartialOrd for Utf16CodeUnits

fn partial_cmp(&self, other: &Utf16CodeUnits) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Sub for Utf16CodeUnits

type Output = Utf16CodeUnits

The resulting type after applying the - operator.

fn sub(self, value: Self) -> Self

Performs the - operation.

impl SubAssign for Utf16CodeUnits

fn sub_assign(&mut self, other: Self)

Performs the -= operation.

impl Sum for Utf16CodeUnits

fn sum<I: Iterator<Item = Self>>(iter: I) -> Self

Takes an iterator and generates Self from the elements by “summing up” the items.

impl Copy for Utf16CodeUnits

impl Eq for Utf16CodeUnits

impl StructuralPartialEq for Utf16CodeUnits