Struct markup5ever::util::smallcharset::SmallCharSet

pub struct SmallCharSet {
    pub bits: u64,
}

Represents a set of “small characters”, those with Unicode scalar values less than 64.

This is stored as a bitmap, with 1 bit for each value.

Fields

bits: u64

Implementations

impl SmallCharSet

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

Checks whether a character (u8 value below 64) is stored in the SmallCharSet.

Examples

let set = SmallCharSet {
    bits: 0b00000000_01000000_00000100_00000000_00000000_00000000_00010000_00000000
};
assert!(set.contains(64));
assert!(set.contains(b'6')); // `b'6'` is the same as 64u8

pub fn nonmember_prefix_len(&self, buf: &str) -> u32

Count the number of bytes of characters at the beginning of buf which are not in the set.

This functionality is used in BufferQueue::pop_except_from.

Examples

let set = small_char_set!(48 49 50); // '0' '1' '2'
// `test` is 4 chars, 😁 is 4 chars, then we meet a character in the set
let test_str = "test😁01232afd";
assert_eq!(set.nonmember_prefix_len(test_str), 8);

Trait Implementations

impl Clone for SmallCharSet

fn clone(&self) -> SmallCharSet

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SmallCharSet

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

Formats the value using the given formatter.

impl Hash for SmallCharSet

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

Feeds this value into the given Hasher.

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

Feeds a slice of this type into the given Hasher.

impl PartialEq<SmallCharSet> for SmallCharSet

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for SmallCharSet

impl Eq for SmallCharSet

impl StructuralEq for SmallCharSet

impl StructuralPartialEq for SmallCharSet