Enum pomsky_syntax::diagnose::CharClassError

#[non_exhaustive]
pub enum CharClassError {
    Empty,
    CaretInGroup,
    DescendingRange(char, char),
    Invalid,
    Unallowed,
    UnknownNamedClass {
        found: Box<str>,
    },
    Negative,
}

An error that relates to a character class

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Empty

Empty character class, i.e. []

CaretInGroup

This error is created when [^ is encountered. This is a negated character class in a regex, but pomsky instead uses the ![ syntax.

DescendingRange(char, char)

Descending code point range, e.g. ['z'-'a']

Invalid

Invalid token within a character class

Unallowed

Character class contains incompatible shorthands, e.g. [. codepoint]

UnknownNamedClass

Fields

found: Box<str>

Unknown shorthand character class or Unicode property

Negative

A character class that can’t be negated, e.g. [!ascii]

Trait Implementations

impl Clone for CharClassError

fn clone(&self) -> CharClassError

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CharClassError

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

Formats the value using the given formatter.

impl Display for CharClassError

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

Formats the value using the given formatter.

impl Error for CharClassError

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, demand: &mut Demand<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type based access to context intended for error reports.

impl From<CharClassError> for ParseErrorKind

fn from(e: CharClassError) -> Self

Converts to this type from the input type.

impl PartialEq<CharClassError> for CharClassError

fn eq(&self, other: &CharClassError) -> 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 Eq for CharClassError

impl StructuralEq for CharClassError

impl StructuralPartialEq for CharClassError