[][src]Enum regex_syntax::utf8::Utf8Sequence

pub enum Utf8Sequence {
    One(Utf8Range),
    Two([Utf8Range; 2]),
    Three([Utf8Range; 3]),
    Four([Utf8Range; 4]),
}

Utf8Sequence represents a sequence of byte ranges.

To match a Utf8Sequence, a candidate byte sequence must match each successive range.

For example, if there are two ranges, [C2-DF][80-BF], then the byte sequence \xDD\x61 would not match because 0x61 < 0x80.

Variants

One(Utf8Range)

One byte range.

Two([Utf8Range; 2])

Two successive byte ranges.

Three([Utf8Range; 3])

Three successive byte ranges.

Four([Utf8Range; 4])

Four successive byte ranges.

Implementations

impl Utf8Sequence[src]

pub fn as_slice(&self) -> &[Utf8Range][src]

Returns the underlying sequence of byte ranges as a slice.

pub fn len(&self) -> usize[src]

Returns the number of byte ranges in this sequence.

The length is guaranteed to be in the closed interval [1, 4].

pub fn reverse(&mut self)[src]

Reverses the ranges in this sequence.

For example, if this corresponds to the following sequence:

This example is not tested
[D0-D3][80-BF]

Then after reversal, it will be

This example is not tested
[80-BF][D0-D3]

This is useful when one is constructing a UTF-8 automaton to match character classes in reverse.

pub fn matches(&self, bytes: &[u8]) -> bool[src]

Returns true if and only if a prefix of bytes matches this sequence of byte ranges.

Trait Implementations

impl Clone for Utf8Sequence[src]

impl Copy for Utf8Sequence[src]

impl Debug for Utf8Sequence[src]

impl Eq for Utf8Sequence[src]

impl<'a> IntoIterator for &'a Utf8Sequence[src]

type IntoIter = Iter<'a, Utf8Range>

Which kind of iterator are we turning this into?

type Item = &'a Utf8Range

The type of the elements being iterated over.

impl Ord for Utf8Sequence[src]

impl PartialEq<Utf8Sequence> for Utf8Sequence[src]

impl PartialOrd<Utf8Sequence> for Utf8Sequence[src]

impl StructuralEq for Utf8Sequence[src]

impl StructuralPartialEq for Utf8Sequence[src]

Auto Trait Implementations

impl RefUnwindSafe for Utf8Sequence

impl Send for Utf8Sequence

impl Sync for Utf8Sequence

impl Unpin for Utf8Sequence

impl UnwindSafe for Utf8Sequence

Blanket Implementations

impl<T> Any for T where
    T: 'static + ?Sized
[src]

impl<T> Borrow<T> for T where
    T: ?Sized
[src]

impl<T> BorrowMut<T> for T where
    T: ?Sized
[src]

impl<T> From<T> for T[src]

impl<T, U> Into<U> for T where
    U: From<T>, 
[src]

impl<T> ToOwned for T where
    T: Clone
[src]

type Owned = T

The resulting type after obtaining ownership.

impl<T, U> TryFrom<U> for T where
    U: Into<T>, 
[src]

type Error = Infallible

The type returned in the event of a conversion error.

impl<T, U> TryInto<U> for T where
    U: TryFrom<T>, 
[src]

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

The type returned in the event of a conversion error.