Trait GetCharacterSet 

pub trait GetCharacterSet {
    // Required method
    fn get_set(&self) -> &[char];

    // Provided methods
    fn size(&self) -> usize { ... }
    fn get_character(&self, index: u32) -> Option<&char> { ... }
    fn character_to_bits(&self, chr: &char) -> u32 { ... }
}

This trait is used for reading unicode set data.

New sets should implement get_set which provides the array with unicode characters used by the method.

Required Methods

fn get_set(&self) -> &[char]

Returns the array of characters representing the Unicode characters that should be used by the method. The size of the array should be a power od 2. This is a requirement to be able to encode integer amount of bits.

Provided Methods

fn size(&self) -> usize

fn get_character(&self, index: u32) -> Option<&char>

Maps index (in other words, the value) to the character in the set.

Arguments

• index - the value which will be mapped (i.e. index of the character in the set)

Examples

Gets character which is in the set

use ptero::method::trailing_unicode::character_sets::{CharacterSetType, GetCharacterSet};

let set = CharacterSetType::FullUnicodeSet;

assert_eq!(set.get_character(1), Some(&'\u{0020}'));
assert_eq!(set.get_character(2), Some(&'\u{2000}'));
assert_eq!(set.get_character(31), Some(&'\u{FEFF}'));

Returns None if value cannot be mapped

use ptero::method::trailing_unicode::character_sets::{CharacterSetType, GetCharacterSet};

let set = CharacterSetType::FullUnicodeSet;

assert_eq!(set.get_character(0), None);

Panics

The method panics if the provided value is larger than the set size.

Panics if index exceeds the size of the set

use ptero::method::trailing_unicode::character_sets::{CharacterSetType, GetCharacterSet};

let set = CharacterSetType::FullUnicodeSet;

set.get_character(100);

fn character_to_bits(&self, chr: &char) -> u32

Returns the number represented by the character. The number is the bit representation of the character - or in other words the index. If the character is not recognized it returns 0 by default.

Arguments

• chr - character which will be converted

Examples

Converts recognized character

use ptero::method::trailing_unicode::character_sets::{CharacterSetType, GetCharacterSet};

let set = CharacterSetType::FullUnicodeSet;
let value = set.character_to_bits(&'\u{200A}');

assert_eq!(value, 11);

Converts unrecognized character to 0

use ptero::method::trailing_unicode::character_sets::{CharacterSetType, GetCharacterSet};

let set = CharacterSetType::FullUnicodeSet;
let value = set.character_to_bits(&'A');

assert_eq!(value, 0);

Implementors

impl GetCharacterSet for CharacterSetType