Enum Unicode 

pub enum Unicode {}

A Unicode Standard Annex #31 profile (with LOW LINE removed).

Character Set

This profile uses the unicode-ident crate.

• Start => any character that passes is_xid_start(c).
• Continue => any character that passes is_xid_continue(c) (except LOW LINE).

About Low Line Omission

It’s confusing if the character profile contains a delimiter.

Instead, if you want an identifier that includes the low-line character, you should select such an identifier (from the presets, or by including it as a delimiter in a custom identifier).

We still “include” the character, we just want it to be treated specially.

Trait Implementations

impl CharProfile for Unicode

impl Profile for Unicode

const APPEND_CLOSED: AppendClosed = AppendClosed::Fragment

Whether or not a fragment containing characters in this profile are append-closed.

type CharProfile = Unicode

The underlying character profile that this profile is based on.

type Segmentation = Grapheme

The segmentation strategy that this profile uses.

fn is_chunk_char(c: char) -> bool

Whether or not the provided character can appear at any point in a chunk.

fn is_chunk_continue(c: char) -> bool

Whether or not the provided character is valid at any position after the first character of a chunk (a run of non-delimiter characters).

fn is_chunk_start(c: char) -> bool

Whether or not the provided character can appear at the start of a new chunk (e.g. right after a delimiter).

fn is_ident_start_char(c: char) -> bool

Whether or not the provided character can appear at the absolute start of an identifier.

impl SubsetOf<Unicode> for Strict

Proof: Strict is a subset of the Unicode profile (strict has more restrictions).

impl SubsetOf<Unicode> for Ascii

Proof: ASCII is an obvious subset of Unicode.

impl SubsetOf<Unicode> for Unicode

Proof: It’s always safe to implement this against yourself.